标签： 南京夜生活

One of the people’s new observations： how to control the ＂packaging pollution＂ of online shopping

Editor’s Note: In recent years, every traditional festival, western festival, or man-made festival such as "double 11, Double 12" has become a selling point of Internet merchants’ hype and a "carnival" for young netizens who never leave home. According to the statistics of China E-commerce Research Center, the online shopping transaction volume during the "double 11" in 2017 was about 253.97 billion yuan. Some overseas media said that e-commerce in China will have a far-reaching impact on the business world and the global society. In the praise at home and abroad, behind the "new normal" of online shopping, some problems are gradually exposed. The increase in the volume of transactions has brought about the prosperity and development of the express delivery industry. However, the number of express delivery has surged, and the pollution and harm caused by excessive packaging and illegal packaging have attracted more and more attention. There are also fakes, counterfeit goods and defective products on the online shopping platform, which is followed by difficulties for some consumers to protect their rights; The chaos of e-commerce brushing, speculating and deleting bad reviews has also triggered thinking about the regulatory responsibility of online shopping platforms. The Internet is not a place of extra-legality, and online shopping cannot lose its supervision. Recently, People’s Daily reporters concentrated on interviewing and investigating many problems brought by online shopping.

Small workshops for processing "recycled materials" are full of rubbish of unknown origin. (Photo by People’s Daily reporter Xia Xiaolun)

Recently, the data released by the State Post Bureau showed that in 2017, the national express delivery business volume reached 40.1 billion pieces, a year-on-year increase of 28%; Business income reached 495 billion yuan, up 24.5% year-on-year. The total amount of express delivery in the whole country exceeded 40 billion, which means that the domestic express parcel distribution has entered the era of 100 million daily average.

How are plastic packaging bags used in major express delivery companies produced? Does the production process meet the relevant standards? What harm will such a bag bring to people and the environment? In this regard, the reporter of People’s Daily Online Interview Center conducted an in-depth investigation and interview on the industrial chain of express bags.

During the interview, the reporter from People’s Daily witnessed the important links in the production of plastic bag raw materials: the doors are closed, the lights are dim, and the 300-square-meter factory is full of all kinds of garbage, which will be processed into a kind of raw material called "recycled material", commonly known as blowing material; And these "recycled materials" will be used to produce express packaging bags that we can reach every day, commonly known as blown film. In order to avoid the inspection of government supervision departments at all levels, the production line of this factory started irregularly.

The processing threshold of "recycled materials" is low, the cost is low and the environment is polluted.

At present, all links in the industrial chain of express plastic bags in China are "fighting in their own way", and there is no resource cycle of "raw material production-use-recycling", and "raw material production" is both the source and the most easily overlooked key link. In the industry, the raw materials for making express plastic packaging bags are generally divided into three types: recycled materials, brand-new materials and environmentally friendly materials. Obviously, the cost of environmental protection materials is the most expensive, and the cost of recycled materials is the lowest, which is why many manufacturers choose recycled materials to produce bags.

On Alibaba’s 1688 purchasing and wholesale platform, the reporter has also been confirmed. Through the search for the keyword "express bag", dozens of manufacturers are arranged, and the selection is sorted by sales volume. The highest one has a cumulative turnover of more than 3 million bags, and the obvious source of its express bag is "returned materials", that is, recycled materials.

The purchasing platform shows that most of the materials of the courier bags sold are "recycled materials".

In this regard, the reporter asked a number of companies that manufacture and sell plastic packaging bags for express delivery. Many companies said that there are few environmentally-friendly materials at present, and the plastic bags used for express delivery are basically the cheapest recycled materials. The market demand is large and the supply is sufficient. The recycled materials can be delivered on the same day. If you buy new materials, you need to order them in advance.

The process of using recycled materials to produce express bags is not illegal in itself, but the garbage raw materials used to produce recycled materials are confusing and difficult to trace back to their sources. "Non-compliant recycled materials are the fundamental source of these’ toxic’ courier bags." An industry insider who asked not to be named told the People’s Daily reporter.

"Medical waste and chemical waste are the main sources of these recycled materials. Many medical wastes have not been cleaned, and there are a lot of potential virus and bacterial infections in them. Chemical waste is only useful in making plastic bags. Therefore, the production lines of recycled materials are mostly hidden in remote villages and are not easy to be discovered by the regulatory authorities. " The industry insider said.

A hidden workshop of several hundred square meters, a simple machine worth tens of thousands of pieces, can produce about 2 tons of recycled materials in one day, so the low processing cost also makes many lawless elements rush for it. The pollution caused by the plastic recycling process is often seen in newspapers: illegal sewage discharge will cause serious pollution to local groundwater, soil and agriculture; A large number of toxic gases emitted during processing will also pollute the air and affect people’s health …

Exclusive unannounced visit: returning materials, processing, hiding, hiding garbage, and unknown sources of raw materials.

The reporter from People’s Daily Online Interview Center went to East China for an interview, where there are a large number of express packaging manufacturers. Among them, there are many enterprises producing express plastic bags in filial piety town at the junction of Jinhua and Yiwu.

In a medium-sized packaging processing factory, the reporter saw the production process of express bags. Five machines, working at the same time, can produce more than ten tons a day. Next to the machine, a large number of raw materials are piled up, and the words "Don’t use" are written on some raw materials. When the reporter asked about the source of these raw materials, the staff was slightly mysterious: "These raw materials come from all over the world and are all old friends of the boss. We don’t know the specific situation."

Enterprises use recycled materials to produce express plastic packaging bags. (Photo by People’s Daily reporter Jia Xingpeng)

The reporter found that it is easy to find a company that produces express bags in the industrial zone of filial piety town, and did not see the factory building that produces raw materials upstream. But the reporter got a positive answer from this packaging factory: near the Donghuang line in jindong district, there are hidden small workshops producing so-called recycled materials.

After the visit, the reporter learned from a staff member of a garbage collection station that there were few recycled materials processing plants, and obtained the telephone number of Ren, the owner of a processing plant. What the reporter saw next just confirmed the statement of the above-mentioned insiders.

Ren told reporters by phone that the raw materials they produced have been in great demand in the market recently. Due to the local inspection teams of safety supervision, environmental protection, industry and commerce, many processing plants for recycled materials have closed down, and only his company is hiding in the village, which is relatively remote and can still supply.

"Our raw materials (recycled materials) are in short supply, and the price is 7,500 yuan a ton. If you want the goods, you have to book them in advance." Ren said on the phone.

Subsequently, the reporter learned the specific location of the factory building on the grounds of checking the specific finished products. Starting from the center of Jinhua, drive more than 20 kilometers along the Donghuang line, turn north into a rugged dirt road at the intersection of a bus stop sign marked "Jingyanggang", and turn around for about 2 kilometers. The reporter saw several rows of factories standing in the fields.

Hidden recycled materials workshop and the recycled materials produced. (Photo by People’s Daily reporter Xia Xiaolun)

The reporter asked at the scene that one of them was Ren’s processing factory, but the door was closed. It was an old man who opened the door for the reporter. "We were still producing two days ago, and the wind was tight these two days, so we stopped working. Let’s have a look first," the old man said.

The 300-square-meter factory building is dimly lit, and most of the space is occupied by all kinds of garbage. In the middle of the factory building is a machine that looks very old, and next to it is the dark blue recycled material produced. The reporter visually observed that the recycled materials stored in the factory are about 5 tons.

"Now the government is strict in checking and closing many factories. Now there is a great demand for our raw materials in the market. Our machines can produce about 2 tons a day. If you have enough 20-30 tons of a car, you will ship it out. " The old man told reporters.

The reporter immediately asked the old man whether the garbage used in the production line to make recycled materials was obtained through formal channels. In this regard, the old man is secretive: "We have been working in this village for four or five years. These garbage raw materials are sent by relatives for many years, and the price is cheap. It is simply not available in the market."

The unknown source of garbage raw materials is the key to the emergence of express "toxic" packaging. In this regard, Lei Zhu, vice president of Qingdao Research Institute of Beijing Institute of Printing, believes that there are many sources of toxic and harmful substances in express plastic bags, such as heavy metals, COD (chemical oxygen demand) emissions generated during printing, plasticizer carcinogens such as sticky powder or dioxins, and microbial populations brought from biological and medical wastes and chemical plants, which will bring certain harm to the environment and human body.

The industry calls on the express delivery industry to promote green packaging

The reporter found that the vast majority of plastic packaging bags for express delivery are also harmful to the environment and human body when they are recycled. It is understood that the degradation cycle of harmful waste produced by express plastic packaging is more than 200 years, and it will pollute soil and groundwater; However, when express garbage is burned, it will produce dioxins, which will seriously endanger human health and pollute the atmosphere.

In addition, many recycled materials are made of unwashed medical waste and useless chemical waste, which will also endanger hundreds of thousands of couriers who have been exposed to express packaging bags for a long time.

In this regard, the above-mentioned insiders suggest that at present, recycled materials are banned in supermarket shopping bags in China, and it is also hoped that recycled materials will be banned in the entire express delivery field. With the rapid development of e-commerce network, couriers and consumers have more and more contact with plastic packaging bags for express delivery, and their health will also be endangered.

Lei Zhu also said that the use of recycled materials is in line with the concept of circular economy, because it recycles the used plastic waste. "However, it is necessary to classify the waste to prevent toxic and harmful carcinogens from entering the recycled recycled recycled materials." He said.

In this regard, Lei Zhu suggested that it is necessary to clarify the definition and standards for the use of green packaging bags in the express delivery industry, speed up third-party inspection and testing institutions, and make the government’s supervision and testing more reasonable; In addition, a green packaging evaluation system should be established and the pilot experience should be popularized.

Huang Zhigang, dean of the School of Materials and Mechanical Engineering, Beijing Technology and Business University, believes that the economic and environmental significance of degradable materials is gradually emerging, and the use of biodegradable materials is an inevitable trend from the general trend.

The report of the 19th National Congress of the Communist Party of China emphasized that "the spatial pattern, industrial structure, mode of production and way of life should be formed to save resources and protect the environment".

Practice tells us that to get out of this dilemma, we need consensus and more implementation. In addition to enhancing consumers’ concept of green life, we also need to rely on environmental protection technology innovation in the industry and regulatory policies of relevant departments. Many government departments have also made beneficial explorations on the large amount of plastic waste produced by the express delivery industry.

On November 2, 2017, He Lifeng, director of the National Development and Reform Commission, said that the National Development and Reform Commission will work with relevant departments to study and adjust the "Plastic Restriction Order" and formulate relevant implementation plans to take the lead in restricting the use of a series of non-degradable plastic packaging in take-away industries.

Also on the same day, the State Post Bureau, the National Development and Reform Commission and other 10 departments jointly issued the Guiding Opinions on Promoting Green Packaging in Express Industry (hereinafter referred to as the Opinions), which pointed out that the top-level design will be further optimized, the source management will be promoted, the supply of green express service products will be increased, and the express delivery will be improved in accordance with the principles of "government guidance, social participation, innovation-driven, source management, classified guidance and local conditions".

In addition, the Opinions also pointed out that in 2020, the application ratio of degradable green packaging materials will reach 50%, and packaging materials with excessive special substances such as heavy metals will be basically eliminated. The utilization rate of electronic waybills will reach more than 90%, and the average consumption of each express packaging material will be reduced by more than 10%.

Unannounced visit to the source of the courier bag: returning materials, processing, hiding garbage, and the source of raw materials is unknown.　

Is the 50,000+unfinished degree room an opportunity or a trap？

Guangzhou degree room quotation list, want to know more, click here!

Education has always been a top priority for Chinese. In recent years, Chinese-style education has spawned Chinese-style housing, and sky-high degree rooms have become a common occurrence. In order not to lose at the starting line, many parents have successively embarked on the road of "choosing a school and living". Buying a degree room means better educational resources, and the degree room has thus become a "luxury". In Guangzhou, the policy of realizing multi-school dicing is endless, but the market situation of Yuexiu’s degree rooms with famous schools has not changed, and 50,000+degree rooms are blooming everywhere. According to the data released by the Central Plains Research Department, as there are few new discs on sale in Yuexiu, the sales of second-hand buildings in Yuexiu increased by as much as 94% last year, which shows that the degree room has never been "out of favor". Recently, there is good news from Yuexiu, which has always been a rare place to live: in the first half of the year, two new markets, Jialanxuan and Yuetai Rongting House, will be ushered in. In the series of exploring the spring and stepping on the plate recently launched by Netease Real Estate, Xiaobian personally explored the above two plates and unveiled its mystery for everyone!

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The surrounding provincial famous schools are clustered together, and the educational resources are hard to compete.

Let’s start with education. It goes without saying that the educational resources in Yuexiu District are good, and Rongtingfu and Jialanxuan in Yuetai are no exception. Among them, Rongtingfu Primary School in Yuetai is classified as a first-class red torch primary school in the city, and there are five junior high schools corresponding to computer ranking: Shengshi, Peizheng, Huaqiao, 13 and 16, of which the first three are provincial-level, and it is said that there is a 60% chance to attend a provincial-level junior high school.

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In contrast, Jia Lanxuan is more mysterious. Xiaobian consulted and sold in the process of stepping on the plate and never got an accurate answer. However, from the comparison of nearby communities, the educational resources in the area where Jia Lanxuan is located are still good. The counterpart primary school is a city-level Manchu primary school, and there are four national demonstration high schools and a provincial-level middle school nearby. The above inference can also be confirmed in the information of the advertising display board of the project sales center.

Jialanxuan sales center advertisement exhibition board
Jialanxuan sales center advertisement exhibition board

Summary:Generally speaking, these two properties are comparable in the contest of educational resources. If we consider from this point, both properties are good choices.

The regional advantages of the rebirth of uncompleted residential flats in the old district still exist.

Since it is difficult to compete in educational resources, what about the conditions of the real estate itself? As we all know, Jialanxuan and Yuetai Rongtingfu are both located in Yuexiu District, so it is inevitable that the surrounding facilities are mature, and the subway station and commercial facilities are perfect. But why does Yuexiu, which has not sold land for a long time, have a new site? The truth is uncompleted residential flats.

First of all, the most "unlucky" one is Jialanxuan. It has been more than 20 years since the indigenous residents were forced to move out in 1995, and it has been shut down many times in the middle. Finally, in early 17, this long-delayed project was officially launched. According to sales, Jialanxuan consists of two houses, A and B, and B is a relocated house, which is not for sale; Building A is a commercial house with 29 floors above ground and 3 floors underground. The first to fifth floors are commercial podium buildings, the sixth floor is an overhead floor, the seventh floor is a transfer floor, the eighth to 29th floors are residential buildings, and the first to third floors are parking lots. Huxing main 50-125 square meters of one to three-bedroom units, with a total cargo volume of only 198 households.

Jialanxuan sand table
Jialanxuan sand table

On the other side, Rongting House in Yuetai took the land in 2003, which was also put on hold for a long time. However, there is no relocation house in Rongtingfu, Yuetai, and the cargo volume is slightly larger, totaling 235 sets. It is estimated that 97-169 square meters of three to four rooms will be launched in March, with 57 sets in Building B being the first. According to the plan, the following floor of Rongting House in Yuetai is commercial, the first floor is shops along the street, and there are three underground parking spaces, with a ratio of 1:1. In the specific location, the Rongting House in Yuetai is opposite to the Triangle City, and there is a serious injury that the Donghaoyong Elevated Road is nearby (about 20 meters by visual inspection), which will affect the living environment more or less.

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Summary:In contrast, although the two properties are perfect in living facilities, their disadvantages are also quite obvious. Because Yuetai Rongting House is close to Donghaoyong Elevated Road, Jialanxuan will be slightly better.

The wonderful apartment type attracts the spit. Jia Lanxuan wants to "take the sword to the front"?

Finally, pk is carried out from the apartment type. Jialanxuan is a rare small apartment in Yuexiu District, with a minimum of 50 square meters and a maximum of 125 square meters. However, almost everyone who has seen the model house of Jialanxuan will say that Jialanxuan is a wonderful apartment. Why do you say this? Xiaobian immediately announced. First of all, look at the 87-square-meter two-bedroom, two-bedroom and one-bathroom. The biggest drawback is that there is no window in the living room, so you have to turn on the lights all the year round to keep the light adequate.

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In addition, the 84-square-meter second room is also criticized by many people. There are two bedrooms, one at the door and one at the end of the living room. The kitchen and bathroom are opposite, which is also puzzling.

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In addition, there are also cases of no balcony and "pistol-shaped" apartment types in Jialanxuan’s apartment types. In short, many understandings of apartment types have been refreshed.

Compared with Jia Lanxuan, Rongting House in Yuetai is much more normal. Yuetai Rongting Mansion has an improved orientation, with 97, 118 flat three rooms and 169 flat four rooms respectively. Taking the largest 169-flat four-bedroom apartment as an example, the design of three balconies is adopted, and the main suite area is more than 20 square meters, which is quite comfortable. The disadvantage is that the vision is not good enough, looking south at elevated roads and residential buildings.

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Summary:In view of the fact that the design of Jialanxuan is really unacceptable, Yuetai Rongtingfu is a complete victory in terms of apartment layout. However, the apartment type of Rongting House in Yuetai is not without shortcomings, and the unit price of the project is high, so it will be more difficult to supply large apartment types. It is recommended that interested buyers consider it comprehensively before starting.

Step on the plate comments:On the whole, although the defects are obvious, the entry of Yuetai Rongtingfu and Jialanxuan into the market has added new blood to Yuexiu District, which has been in the property market for a long time. However, compared with similar products in Tianhe, Liwan and Haizhu, which are located in the same urban area, the biggest advantage of Yuexiu Property is the degree. For the degree, how many people will pay for this 50,000+price? Further, is this 50,000+worth it? I believe everyone has their own conclusion.

(Author: Chen Tingyun)

Chinese aunt shot again？ With the increase of 8 yuan money per gram, the scene of snapping up gold is still ＂good hi yo＂!

　　CCTV News:At the end of the year and the beginning of the year, many consumers will buy new year gifts for their families, and gold jewelry is one of the more popular choices. Recently, Beijing’s gold jewelry sales have entered a peak period. Next, we immediately connected with our reporter Tang Xiaotong who is in Beijing. What are the most popular styles of gold jewelry this year? What is the sales volume?

　　Reporter Tang Xiaotong: I’m at the Caibai Market in Beijing. Since the beginning of this year, the international gold price has been constantly touching high. Affected by this, the prices of gold and jewelry in major gold shops in Beijing have also increased accordingly. Now the price of pure gold 999 has risen from 345 yuan per gram to 353 yuan. Although the price has gone up, it has not affected consumers’ enthusiasm for buying gold jewelry years ago. It can be seen that there are many people behind me now. It is understood that since mid-January, the number of consumers who come to buy has gradually increased. So what products do you like this year? Let’s ask a consumer.

　　Consumer: it’s for my daughter-in-law. I want to make a good start. (What’s the budget for buying gold ornaments this year? ) Maybe five or six thousand. Now that the living standard has improved, life is getting better.

　　Reporter Tang Xiaotong: We can see the consumers who buy gold jewelry, the middle-aged and elderly people in the past, and now more and more young consumers are also very fond of it. In order to cater to their needs, many merchants now spend a lot of thoughts on the design of gold jewelry products, among which one "transit bead" is very popular and can be said to be the explosion here. So in terms of design, are there any tricks this year?

　　Li Gen, designer of Beijing Caishikou Department Store: This year, we adjusted the craft on the original basis, so that the color of the whole gold ornament will be richer. In addition, the shape has also been adjusted. Last year, the design of pig’s head gold ornaments was round on the back, but consumers are prone to reverse when wearing them. This year, the design is smoother. In addition, this year we added the element of "Fu", which has different meanings and is more auspicious. Even if it is reversed when worn, it will not affect the beauty of wearing.

　　Reporter Tang Xiaotong: In recent years, hard gold has been welcomed by consumers. What are the reasons?

　　Li Gen, designer of Beijing Caishikou Department Store: Hard gold can be visually bigger on the basis of the same weight.

　　Reporter Tang Xiaotong: How much will the price difference be?

　　Li Gen, designer of Beijing Caishikou Department Store: For example, generally speaking, gold ornaments like this little pig’s head are made of about 1 gram of hard gold, but it is about 3 grams made by traditional techniques.

How intelligent is the popular new energy vehicle？ Display ranking of ＂Intelligent Test List of Easy Cars＂

The intelligent trend of the automobile industry in the ascendant makes consumers not only pay attention to the mechanical quality of automobiles, but also influence consumers’ car purchase choices. Faced with the popular smart electric vehicles in the market, consumers hope to have authoritative evaluation to provide professional reference for their car purchase decisions.

In response to the changes in the automobile market and consumer demand, Easy Car recently launched the "Intelligent Test List of Easy Cars", selected popular new cars with intelligent related configurations at present, and made special evaluation and scoring through actual vehicle road test, and finally showed the comprehensive level of the car’s intelligence through video, data and text.

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At present, the first batch of measured new cars in the "Easy Car Intelligent Measurement List" has reached 27 models, including Tesla Model Y, Weilai ET7, Ideal L8 and other new head brands, Mercedes-Benz EQE, BMW iX, Audi Q5 e-tron and other international brands, Ford electric horse, FAW Toyota bZ4X and other transformation works, Hongqi E-HS9, Lectra 09 PHEV and other China smart creations, as well as "born for electricity".

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It is reported that the evaluation content of the "Easy Car Intelligent Measurement List" covers four evaluation dimensions: intelligent driving, intelligent safety, intelligent cockpit and intelligent vehicle control. Among them, intelligent driving mainly examines the comprehensive level of vehicle driving assistance related functions, which is divided into three parts: active cruising, lane keeping and high-order assisted driving; Intelligent safety mainly tests the active avoidance ability of vehicle front collision warning (FCW) and automatic emergency braking system (AEB) in the face of fake cars and dummy models; The intelligent cockpit mainly examines the comprehensive experience of the car’s software and hardware in the cabin, which consists of three parts: basic experience, cockpit functionality and human-computer interaction. Intelligent vehicle control mainly examines the actual performance of the automatic parking and remote vehicle control functions of the participating models.

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Intelligent driving test

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Intelligent security test

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Intelligent cockpit test

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Intelligent vehicle control test

It can be said that the "Easy Car Intelligent Measurement List" helps consumers understand the hot new car technology highlights in an intuitive and rich way through various evaluation methods such as objective measurement and subjective evaluation.

For Easy Car, "Intelligent Measurement of Easy Car" also enriches and completes the system of Easy Car Measurement. At present, Car Easy Test has covered the vehicle performance indicators that consumers are most concerned about, such as product strength, fuel consumption, lap speed, acceleration, elk test, intelligence, braking, battery life, charging, power consumption, etc., and together with Car Easy New Energy Limit Evaluation, Car Easy Intelligent Evaluation, Real 100,000-kilometer Long Test, Car Easy Cross Review, Car Easy Speed List and Motorcycle Guide, it forms the Car Easy Super.

Explain in detail the intelligent driver assistance system of Mercedes-Benz EQE, and how to realize each function.

It is obvious that Mercedes-Benz’s road to electrification is not smooth. In the process of "elephant turning around", although Mercedes-Benz launched a variety of new energy vehicles, it did not stir up any splash in the market, such as EQC, EQV and other models, which not only made the monthly sales volume bleak, but also accompanied by the huge suspicion of "changing oil to electricity".

Although it came late and got off to a bad start, the new energy market is the future direction of automobile development, and Mercedes-Benz certainly can’t let go of the "new energy track", so in order to get rid of the stereotype of "changing oil into electricity", increase the profit of pure electric vehicles and expand market share, Mercedes-Benz launched a new pure electric platform-EVA.

After that, Mercedes-Benz models were launched around the EVA platform, and EQS, EQS AMG, EQS SUV and Maybach EQS SUV were launched one after another.

However, the development of things did not succeed in Mercedes-Benz’s wish. Due to the high premium of new models and ungrounded conditions, EQS only achieved more than 200 vehicles in the domestic market in the first half of this year, accompanied by the dilemma of price diving, while other models were even more terrible.

Mercedes-benz EQS

Under the above background, Mercedes-Benz launched the domestic version of EQE, which is more affordable to the people, in an attempt to break this dilemma. However, competitors at this price are emerging one after another, such as BMW i4 and Audi A6 E-Tron, and new domestic forces have long been eyeing up. Therefore, it is not easy to regain a city in the new energy track if you want to rely on EQE. Among the three major parts of electric vehicles (driver assistance system related to three electric/intelligent/automatic driving), the performance of Mercedes-Benz EQE is very important.

At present, the automobile industry has entered the era of smart cars, and the most important embodiment of the intelligence of smart cars is the intelligent driving assistance system. At present, automatic driving cannot be realized, but they are all working in this direction. Mercedes-Benz EQE also regards its L2-level assisted driving as a big selling point in the module of "Perception of Technology".

(Information taken from official website)

So what is the strength of Mercedes-Benz EQE in today’s intelligent driving assistance among the three major electric vehicles? Is it worth looking forward to? In this paper, the intelligent driver assistance system of Mercedes-Benz EQE is analyzed in detail as far as possible through the exclusive arrangement of the intelligent driver assistance function, the configuration of major sensors, the topological structure of wiring harness and the realization paths of various functions.

First, the car profile and driver assistance functions are sorted out

At the beginning of this chapter, in order to make it easier for everyone to intuitively understand the current classification and progress of intelligent driving, and to understand the L2 intelligent driving assistance system of Mercedes-Benz EQE, the author combed out the following information on the basis of China’s Auto Driving Automation Classification (GB/T 40429-2021) which came into effect on March 1, 2022, combined with the actual car scenes used in the corresponding grades.

At present, autonomous driving technology is divided into six grades: L0-L5. Among them, L0 class can’t continuously perform the lateral or longitudinal motion control of vehicles in dynamic driving tasks, but it has the ability to detect and respond to some targets and events in dynamic driving tasks. In this stage, the automatic driving system can perceive the environment and provide information or temporarily intervene in vehicle control to assist the driver to drive the vehicle safely.

The L1-class driving automation system can continuously perform the lateral or longitudinal motion control of vehicles in dynamic driving tasks under its design and operation conditions, and has the ability to detect and respond to some targets and events that are suitable for the lateral or longitudinal motion control of vehicles. The driver and the automatic driving system can perform the driving tasks of vehicles at the same time. At this time, the driver is more like a security officer and mainly supervises the driving behavior of the automatic driving system.

L2 level has the functions of ACC, LCC and other level 1 autopilot systems, and it also has the ability to control lateral and vertical motions at the same time. In the autopilot function of L0-L2 level, the driver has the highest control authority and can intervene at any time to immediately release the control of the autopilot system, which is also the level that can be achieved at present.

L3 level means that the system continuously performs all dynamic driving tasks under its design operating conditions, L4 level means that the system continuously performs all dynamic driving tasks and automatically executes the minimum risk strategy under its design operating conditions, and L5 level means that the system continuously performs all dynamic driving tasks and automatically executes the minimum risk strategy under any driving conditions.

With the above basic information, it will be more convenient to understand the intelligent driver assistance system of Mercedes-Benz EQE.

At present, the domestic version of Mercedes-Benz EQE has a total of three vehicle configurations. The price of EQE 350 Pioneer Edition is 528,000 yuan, the price of EQE 350 Deluxe Edition is 546,000 yuan, and the price of EQE 350 Pre-model Special Edition is 585,000 yuan. It is positioned as a medium and large pure electric vehicle with a cruising range of 717km-752km. According to official data, it provides L2 intelligent driving assistance system.

Turning back to the driver’s assistance function of Mercedes-Benz EQE, the author translated and sorted out various intelligent driver’s assistance functions of Mercedes-Benz EQE by reading the information of Mercedes-Benz official website.

(Translated according to Mercedes-Benz official website data)

For car companies, all intelligent functions are usually divided into two categories: driving and parking. First, because the speed of vehicles is different when driving and parking, the research objects, the application of sensors and various algorithms including decision-making algorithms are also different at the technical level. Second, the functional configuration of intelligent driving is the research object, and the corresponding results are more convenient to be matched on different models in a menu manner.

Mercedes-Benz also divides the intelligent driving assistance system into the above two categories, one is the auxiliary function during parking and the other is the auxiliary function during driving.

As can be seen from the information of Mercedes-Benz official website, the version of the driver assistance operating system comes standard with the classic version of the driver assistance component, while the middle-high version comes standard with the enhanced version of the driver assistance component. Functionally, the low version of the active safety early warning system does not have DOW door opening warning, but the middle-high version is standard. In addition, the road traffic signs in the low version are identified as optional, and the middle-high version is standard. In addition, the number of sensors in the low version is one less than the other two, and the difference lies in the number of cameras.

(According to the information of Mercedes-Benz official website)

However, there must be beautification packaging in the wording of the manufacturer, which may lead to our misunderstanding. In order to avoid this situation, the author will show you the essence through the phenomenon through several functions of Mercedes-Benz EQE.

(According to the data of Mercedes-Benz official website)

Second, the sensor composition of EQE intelligent driver assistance system

1. Number of sensors

Mercedes-Benz EQE provides 23 sensors related to the intelligent driving assistance system, including 1 long-distance millimeter-wave radar, 4 corner radars, 12 parking ultrasonic radars, 1 front binocular stereo multi-function camera, 4 360 parking cameras and 1 in-car viewing angle camera, etc., and is equipped with the enhanced version (P20) of the driving assistance module. The intelligent driving assistance function based on the intelligent navigation distance limiting function (ACCA) can achieve L2 automatic driving level.

In terms of sensor configuration, Mercedes-Benz EQE is far less than the current domestic models of the same level. The new HI version of Extreme Fox Alpha S is equipped with 34 sensors, the whole car of Tucki P7 is equipped with 31 autopilot sensors, and the whole car of Weilai ET7 is equipped with 33 sensors. The prices of these models are far less than those of Mercedes-Benz EQE. Therefore, in the era of smart cars, the cost performance of domestic models is still high, while the Mercedes-Benz brand still has a high premium.

In addition, Mercedes-Benz S-Class /EQS/EQE are all a scheme. There is a laser radar in the topology diagram of foreign vehicle controllers, but the domestic version of EQE has been replaced by a millimeter-wave radar instead of a laser radar, which is different from the foreign version.

One of the most obvious advantages of Mercedes-Benz EQE without laser radar is that it will save costs, because the imported Mercedes-Benz EQS, which is also based on EVA pure electric platform, is equipped with a laser radar. It is reasonable to say that EQE can support laser radar, whether it is overseas or domestic. On the other hand, the policies and regulations of different countries and even cities are different. For example, in North America, different states have different requirements for vehicle headlights. Therefore, in order to save trouble, the geometric multi-beam headlights provided by Mercedes-Benz in North America are also castrated, and the domestic version is the full version. However, the next plan of Mercedes-Benz EQE is to drive automatically at L3 level. In the future, if domestic policies allow, the domestic EQE laser radar will also be on the meeting.

2. Sensor layout

The specific layout of the sensor is shown in the following figure:

(Translated according to Mercedes-Benz official website data)

From the layout, one long-distance millimeter-wave radar is located in front of the vehicle, four corner radars are located on the left and right sides of the front and rear of the vehicle respectively, the positions of 12 ultrasonic radars are shown in the yellow icon in the figure, the front binocular stereo multifunctional camera is located on the roof, and four 360 parking cameras are located on two rearview mirrors and the rear half of the vehicle respectively.

Although the car has reached L2 level of intelligent driver assistance system, it is not worth showing off. L2 level is not high enough, and many cars with more than 100,000 can achieve L2.5 level.

3. Sensor brand, technical highlights and corresponding functions

The sensors carried by Mercedes-Benz EQE have been clearly analyzed. Let’s take a look at the advantages and disadvantages of various sensors:

The hardware of Mercedes-Benz EQE intelligent driving sensor basically comes from big factory suppliers.

In terms of millimeter-wave radar, there is generally a "1+4" method for the millimeter-wave radar equipped with intelligent driving in the industry. It is obvious that Mercedes-Benz EQE has also adopted this number with one long-range millimeter-wave radar arranged in front and four medium-short-range radars arranged at the side and rear of the car.

According to the network information, the millimeter-wave radar of China Net comes from the mainland, and the part numbers are A0009000536/A0009009638/A0009006444 respectively. The intelligent driving assistance function involved is the Distinctive Plus, which mainly participates in the professional version of the Distinctive Pro, the collision alarm and so on.

However, according to the data of foreign versions, there is another scheme for this millimeter-wave radar. The supplier is Bosch, and the part number is A0009052017/A0009055518/A0009051019. There are two possibilities, one is to mix them, and the other is to form a difference between the two.

The four corner radars come from Veoneer, a simple understanding of Veoneer, an automobile technology provider located in Stockholm, Sweden. Its products include radar, laser radar, vision system, advanced intelligent driving assistance, automatic driving software, night driving assistance system, active safety sensors, monocular and stereoscopic vision cameras, and it is worth mentioning that Mercedes-Benz is the first to realize L3 in the world.

The parts number of two corner radars on the outside of the front bumper is A0009051516/A0009059517, which cooperates with millimeter-wave radar to participate in the enhanced version of the automatic distance and speed adjustment system and advanced remote parking; The parts numbers of the two corner radars on the outside of the rear bumper are A0009003335/A0009003138 and A0009051416/A0009059417, which have two main functions. One is similar to the two corner radars on the outside of the front bumper, and cooperates with millimeter-wave radar to participate in the enhanced version of the intelligent navigation distance-limiting function system and advanced remote parking, and the other is to participate in the active blind spot auxiliary system.

The supplier of 12 ultrasonic radars is unknown for the time being. In terms of functions, 6 ultrasonic radars on the front bumper and 6 ultrasonic radars on the rear bumper are all active.

Looking at the visual level again, a binocular stereo multi-function camera on the roof of the domestic EQE adopts Veoneer fourth-generation stereo vision camera system, and the part number is A2239006128/A2239006830/A2239006830, which is composed of fully integrated hardware and sensing software. The camera has been upgraded from the third generation to the fourth generation, and the visual field has been expanded from 52 to 100, with improved accuracy and pixels. This camera uses convolutional neural network technology (CNN) to obtain the available space and detect small obstacles, and at the same time, it can accurately classify and locate the objects in front of the vehicle in combination with 3D stereo, which can be applied to most weather conditions. At the same time, thanks to the core algorithm of Mercedes-Benz, the binocular camera can detect the information of the target without classification, and the situation that obstacles cannot be identified can be well solved. At the same time, the stereo binocular can weaken the demand for lidar and reduce the cost.

It mainly participates in intelligent driving assistance functions such as active lane keeping assistance system, automatic high beam switching (IHC), automatic high beam switching, enhanced version (IHC+), traffic sign recognition, speed sign recognition, advanced head-up display (HUD), distance and speed automatic adjustment system enhanced version (DISTRONIC PLUS) and distance and speed automatic adjustment system professional version (DISTRONIC PRO).

The camera in the car comes from LG’s monocular camera, which is mainly involved in the attention assistance system and will give an early warning when necessary.

The supplier of the other four panoramic cameras for the middle net and exterior rearview mirror is Magna, which acts as a 360 camera and plays a great role in automatic parking.

Third, the brain of EQE intelligent driving system: chip

From the analysis of the sensors in the previous article, it can be seen that the number of sensors carried by Mercedes-Benz EQE is not large, so the requirements for computing power are far less than those of domestic new forces.

At present, the autopilot chip used by Mercedes-Benz EQE has not been disclosed, but according to industry speculation, the Mobileye EyeQ4 chip is used in a high probability.

EyeQ Ultra, the latest version of SoC of Mobileye.

Mobileye mainly provides intelligent assisted driving algorithm+chip solutions to meet the demand of L2-level autopilot. As of last year, about 70% of the world’s production cars were equipped with autopilot chips from Mobileye.

The Xavier 8 core chip of Mercedes-Benz NVIDIA that we often hear is not an intelligent driver assistance chip, but its main function is to support intelligent cockpit experience such as MBUX intelligent human-computer interaction system. In addition, this chip is really carried on the overseas version of EQE, and the domestic version of the chip is not clear.

At present, the computing power of Mercedes-Benz EQE’s self-driving chip is unknown. If it is really a Mobileye EyeQ4 chip, then the computing power is likely to be similar to that of Weilai ES8′ s Mobileye EyeQ4 chip, which is about 2.5TOPS.

However, it is worth mentioning that EQE will realize L3-level automatic driving next, and overseas AMG models of EQE have already confirmed that they will have L3-level assisted driving, so the following models should not adopt Mobileye again. As early as 2017, NVIDIA signed a cooperation agreement with Mercedes-Benz, which will provide smart cockpit chips and autopilot chips for Mercedes-Benz. Therefore, Mercedes-Benz EQE will adopt NVIDIA with greater computing power in the future.

Iv. Topology layout analysis of wire harness

If you want to know how to realize the intelligent driving assistance function of a car, you must know the wiring harness layout.

(Topology diagram of Mercedes EQE harness)

Automotive wiring harness is the network subject of automobile circuit, and there is no automobile circuit without wiring harness. In modern cars, there are many automotive wiring harness, and the electronic control system is closely related to the wiring harness.

Generally speaking, if the functions of microcomputer, sensor and actuator are compared with human body, it can be said that microcomputer is equivalent to human brain, sensor is equivalent to sensory organ, and actuator is equivalent to motor organ, then wiring harness is equivalent to nerve and blood vessel.

Previously, the four buses of automobiles were CAN, LIN, FlexRay and MOST. Generally speaking, CAN bus is the backbone, LIN is the deputy of CAN, FlexRay is the hope of the future, and MOST is responsible for cultural undertakings. However, with the increasing demand for intelligent driving in automobiles, high-speed data transmission is required for applications such as navigation system and parking distance control, so LVDS wiring harness is gradually emerging.

1. CAN bus layout of EQE

CAN is the abbreviation of ControllerArea Network, CAN), which is a multi-master bus between nodes for distributed control system. There is no master-slave distinction in data communication, and any node can initiate data to any other node (one or more), with the highest communication rate of 1Mbps. Taking CAN network as the main network can realize the intelligent control of the automobile, such as automatically locking the door at high speed and automatically opening the door when the airbag pops up. CAN is a Bus communication mode, which means that all nodes are connected to the same transmission medium, which means that the electrical signals in the transmission medium will affect all nodes.

From the vehicle controller topology of Mercedes-Benz EQE, we CAN see that Mercedes-Benz EQE still uses CAN as a means of controller networking. There are 20 groups of CAN buses in Mercedes-Benz EQE, which control many functions of EQE body, including steering wheel assembly/system, etc. In addition, it also plays a vital role in EQE’s intelligent driver assistance system.

2. LIN layout of EQE

LIN(Local Interconnect Network) bus is a supplement to other automobile multi-channel networks such as CAN. In general, LIN does not exist independently in automobiles, but is usually connected with other networks such as upper CAN network, which is suitable for applications that do not have too high requirements on network bandwidth, performance or fault-tolerant functions. For example, in Mercedes EQE, it is mainly used for window control, automatic back door, electric rearview mirror adjustment, seat heating and ventilation, etc., and the use of CAN bus for these functions will cause performance waste.

In Mercedes-Benz EQE, there are 40 groups of LIN buses connected to Ethernet, 1 group of LIN buses connected to FlexRay and 28 groups of LIN buses connected to CAN, some of which have the following functions, and are less related to the intelligent driver assistance system.

It is worth mentioning that Mercedes-Benz EQE is equipped with a new generation of MBUX intelligent human-computer interaction system, with a memory bandwidth of 46.4GB/s per second, which is at the leading level in the industry, so the smoothness of the car operating system is guaranteed to some extent.

3. FlexRay layout of EQE

FlexRay is the research and development achievement after CAN and LIN, which can effectively manage multiple safety and comfort functions. The maximum performance limit of CAN network is 1Mbps, and the maximum performance limit of LIN is 125Kbps, while the maximum data rate of FlexRay on two channels CAN reach 10Mbps, and the total data rate can reach 20 Mbps. Therefore, the network bandwidth of FlexRay may be as much as 20 times that of CAN when applied to vehicle networks.

FlexRay CAN run not only as a single channel system like CAN and LIN networks, but also as a dual channel system. Dual-channel systems can transmit data through redundant networks, which is also an important performance of highly reliable systems.

There are a set of FlexRay buses in Mercedes-Benz EQE, which play a vital role in the intelligent driving assistance of Mercedes-Benz EQE. The related FlexRay bus controllers are as follows:

4. LVDS of EQE

LVDS wiring harness is a bridge between the display screen and the communication motherboard, which plays the role of power supply and signal transmission, and the motherboard transmits the picture to the display screen, that is, the screen wire harness. Any running machine with a screen will inevitably have LVDS wires to transmit data.

There are many electromagnetic radiation sources in the automobile, so anti-interference ability is the most basic requirement of automobile electronic design. In addition, considering the low radiation advantage of LVDS transmission line itself, it hardly causes additional interference to other facilities of the system. LVDS transmission only needs simple resistance connection, which simplifies the circuit layout and the line connection is very simple (using twisted copper cable). LVDS is compatible with various bus topologies: point-to-point topology (one transmitter and one receiver); Multi-branch topology (one transmitter, multiple receivers); Multipoint topology (multiple transmitters, multiple receivers).

Mainly for the 360-degree panoramic image system of Mercedes-Benz EQE. The data transmission technology of Mercedes-Benz 360 image system has experienced two technical changes. Early models used LVDS low-voltage differential signal, while the latest models used HSVL high-speed video link. For example, for E-class cars, LVDS technology was used before 2021, and HSVL technology was adopted in 2021.

At present, there is no sign of LVDS wiring harness in EQE’s vehicle controller topology, but it is certain that Mercedes-Benz EQE adopts LVDS wiring harness.

5. Ethernet main bus of EQE

At present, the mainstream view in the mainstream industry thinks that vehicle Ethernet will become the development trend of intelligent networked automobile bus in the future, so this is also the mainstream direction of many automobile enterprises in research.

There are terminal nodes in the network, which simply means that there is only one Ethernet port on a node; And it is simply understood that there are multiple Ethernet ports on a node, and its main function is to forward information. Switch communication means that all terminal nodes can be connected together through switches, and all transmitted information needs to be forwarded by switches. In switched communication, only two ends of a network line are connected to two ports, and there is no bifurcation. So generally we don’t talk about Ethernet bus, but about Ethernet Network.

In Mercedes-Benz EQE, the Ethernet main bus is connected with 40 groups of LINs, and there is also a controller related to the intelligent driver assistance system:

Actual scene analysis, how does EQE intelligent driver assistance system work?

A car’s intelligent driving assistance system involves many levels, besides the sensor level, there are controller, electronic and electrical architecture level, algorithm and so on, which are the three main modules we often say: perception, decision-making and control. Generally speaking, it is similar to people’s eyes, brain and limbs.

The following will analyze how Mercedes-Benz EQE intelligent driver assistance system works from the practical application scenarios of various intelligent driver assistance functions.

1. PARKING (automatic parking)

On the aspect of automatic parking, major car companies are speeding up the mass production of automatic parking. From the perspective of China’s market layout, the concentration of car companies equipped with APA is high, and the top ten car companies account for 84.1% of the market share. The sales volume of Beijing Benz equipped with APA models is far ahead of other car companies.

At present, there are four automatic parking systems, semi-automatic parking (S-APA), automatic parking (F-APA, RPA), memory parking (HPP) and autonomous parking service (AVP).

The automatic parking function of Mercedes EQE is as follows:

(Translated according to Mercedes-Benz official website data)

Mercedes-Benz also explained EQE’s automatic parking system in detail.

(Translated according to Mercedes-Benz official website data)

According to the data of Mercedes-Benz official website, it can be found that the "parking package with 360 camera and remote parking functions" of Mercedes-Benz EQE supports active parking assistance, memory parking and remote parking assistance. In addition, there is a high-precision self-learning map, so the automatic parking system should be located at the highest SAE L4 level in the automatic parking class: Autonomous parking service (AVP).

According to the analysis of Mercedes-Benz EQE sensor, the configuration of the sensor conforms to the definition of autonomous parking service (AVP).

The automatic parking system includes sensing system, central control system, execution system and human-computer interaction system, which are connected by wiring harness. The fourth chapter above involves wiring harness.

From the design point of view, Mercedes-Benz’s parking system also adopts the integrated parking scheme of looking around and ultrasonic, and the whole car does not use lidar. If lidar is used, the problem of sensor perception limitation will be solved on a large scale.

From the perspective of the whole industry, at present, there are many L2 and L2+ automatic parking integration schemes with car-end transformation as the main technical scheme, and the L4 AVP is involved in Mercedes EQE, so it will also involve the construction of high-precision maps, and the map data needs to be updated regularly and in real time.

It is worth mentioning that the supplier of Mercedes-Benz’s high-precision map construction in overseas models is HERE, whose main function is to serve L3 autopilot. At present, Mercedes-Benz DRIVE PILOT autopilot has landed, and the high-precision map carried by EQE is also paving the way for L3 autopilot on EQE.

Mercedes-Benz DRIVE PILOTL3 Class Autopilot Landing

At present, the domestic version of EQE is equipped with NavInfo. As one of the earliest map vendors in China, NavInfo once became an "oligarch", and NavInfo has close ties with national car companies such as Tesla, Daimler, Ford, BMW, Guangzhou Automobile, Great Wall and Weilai.

According to NavInfo’s new public information, it won the order for the autopilot data management service platform for mass-produced vehicles from Daimler Greater China Investment Co., Ltd. last year, and will build and integrate Daimler’s domestic autopilot platform, and be responsible for the data management service of the platform from November 2021 to November 2024, and at the same time provide data processing services for the passenger cars mass-produced by Daimler Group in China from November 2021 to November 2024 through the platform, so the domestic version of EQE.

After the sensors mentioned above collect the vehicle position information and body state information, the sensing system converts them into digital signals, which provides the basis for the next path planning and decision-making.

In the process of signal transmission, it will be transmitted to the central control system through various routes in the previous chapter (Chapter 4). The specific transmission paths are as follows:

CAN bus –CAN S1 front radar controller area network, CAN S2 rear radar controller area network-controller 4 corner radars (B29/11: left front short-range radar (left front NBR), B29/12: right front short-range radar (right front NBR), B29/13: left rear short-range radar (left rear NBR), B29/14:

Ethernet main bus-controller N41/7: self-learning high-precision map (SHPK), N41/8: position determination.

Chassis FlexRay Bus-A40/11: Multifunctional Camera (MFK).

The information collected by the sensing system is processed and analyzed, and the current position of the vehicle, the position of the target and the surrounding environment are obtained. The central controller judges whether there are parking conditions according to these parameters, calculates the optimal path planning, generates corresponding control instructions, and sends the information such as steering torque and angle information needed in the parking process to the relevant actuators in the form of electrical signals through the vehicle network.

The implementation of Mercedes-Benz EQE is

The signal passes through the chassis FlexRay bus –N68: Electric Power Steering (ES)N68/4: Rear Axle Steering System (HAL)N80: Steering Column Module (Steering Column Tube Module (MRM)) and is finally reflected on the wheels.

The LVDS line is unclear.

2. DRIVING (driving)

In this respect, the functions owned by Mercedes-Benz EQE have been elaborated in the first chapter, and several representative functions are selected for analysis.

2, 1 Active Brake Assist (active brake assist)

Active braking assistance reacts to the actual situation. When there is a collision risk, Mercedes-Benz EQE gives a visual and audible warning, and when the driver does not respond, the system will assist braking.

The sensors involved in the perception level mainly include 1 millimeter wave radar and 12 ultrasonic radars.

Similar to PARKING, the signal is formed by the sensing system, and the transmission path is Ethernet main bus -A89: long-range radar (FBR). The transmission harness of ultrasonic radar is not clear for the time being, but it is clear that the signal must have been transmitted to the central control system.

Finally, at the actuator level, the vehicle will be braked, and the signal transmission path is:

Signal-Chassis FlexRay Bus –N68: Electric Power Steering (ES)N68/4: Rear Axle Steering System (HAL)N80: Steering Column Module (Steering Column Tube Module (MRM))- Brake

At the same time, the signal passes through CAN T：CPC harness to N12/2: SOGE to give an audible warning to the owner.

2, 2 Active Lane Keeping Assist system (active lane keeping assist)

During driving, when EQE deviates from the lane pressing line, the steering wheel will vibrate, and when there is an obstacle beside it, the system will sound an alarm, and at the same time, unilateral braking will intervene to assist the vehicle to return to the right position.

Perception system involves binocular camera on the roof, 4 cameras on the car body, millimeter wave radar, 4 angle radars and 12 ultrasonic radars.

Similar to PARKING, four corner mines are also required to collect information, and the information is transmitted by two wire harnesses: CAN S1: front radar controller area network and CAN S2: rear radar controller area network. This path also participates in active blind spot auxiliary system and intelligent navigation distance limiting function.

In addition, there is the signal of the binocular camera on the roof, and the chassis FlexRay bus-A40/11: Multifunctional Camera (MFK). This signal transmission path is also used in the intelligent navigation distance limiting function, speed sign recognition and traffic signal recognition function.

The information transmission path of millimeter-wave radar is similar to that of active braking assistance, so I won’t go into details, and it is also used for intelligent navigation distance limiting function.

At the execution level, the signal is also transmitted through the chassis FlexRay bus, and finally the vehicle sends out an alarm sound, and the system assists the vehicle to return to the right position.

There are many similarities in the transmission paths of active parking assist system, active braking system, active lane keeping assist system and intelligent navigation distance limiting function. The sensors, actuators and transmission paths involved in each function can also be clearly seen in the harness distribution in Chapter 4 above, and the general idea is similar to that of active braking assist system, active lane keeping assist system and automatic parking analyzed above.

The remaining auxiliary functions can also be analyzed according to the above ideas.

In addition, the actual experience of Mercedes-Benz EQE’s intelligent driver assistance system has been evaluated by German ADAC test before, as follows:

Mercedes-Benz EQE has excellent driving stability and insufficient steering accuracy, but fortunately, with the help of intelligent assisted driving, the model can easily keep driving in a straight line; In terms of braking, the brake pedal feels stiff and there is no clear pressure point. German ADAC test thinks that this is a point that Mercedes-Benz needs to improve, otherwise it will permanently interfere with EQE’s driving experience. In terms of active safety assistance system, Mercedes-Benz is in the leading position in the industry, which is also reflected in EQE models. Under the functions of emergency braking system, including collision and distance warning, it can ensure safety to a great extent; Pedestrian protection is equipped with an active hood, which will automatically rise in the event of collision, thus increasing the distance from hard engine parts. In addition, a predictive emergency braking assistant is standard, which can respond to pedestrians and cyclists.

On the whole, Mercedes-Benz EQE’s intelligent driving assistance has a good help in the actual driving process, but it should be noted that the models tested by ADAC are overseas versions, which are of reference to our domestic consumers, but not much.

VI. Summary

In the research and development of intelligent driving technology, Mercedes-Benz should be regarded as an early brand. As early as 30 years ago, based on the European "Eureka" research plan, it launched an intelligent transportation project called "Prometheus". From the end of 1990s to 2005, Mercedes-Benz introduced a distance control system named DISTRONIC and an upgraded version-Distronic Plus.

After 2015, Mercedes-Benz began to explore intelligent driving through travel services, and in 2018, it cooperated with doctors to launch the Robotaxi service of L4/L5 unmanned taxi in California.

In the last five years, there have been frequent actions. In July 2017, Mercedes-Benz invested in Momenta, a self-driving startup in China, and acquired Torc Robotics in April 2019, which significantly accelerated the intelligent strategy.

However, there is still a significant gap between this speed increase and the research and development, popularization and cost control of smart cars in China. Judging from the cost performance and quantity of its intelligent driving system hardware, the new force of making cars in China is basically the existence of this intelligent driving assistance system that can kill EQE, so from the comparison of peers, this system can’t support the price as high as 500,000 yuan.

Judging from the sensors carried by Mercedes-Benz EQE, it is imperative for Mercedes-Benz EQE to use L3 intelligent driver assistance system. If it can get on the road, then the new domestic forces will only increase, so the high premium of Mercedes-Benz will continue to exist to some extent.

China Star ｜ Shenzhou 16 enhances the reliability of Beidou navigation signals

　　CCTV News:The Shenzhou-16 manned spacecraft is the first manned spacecraft in the new stage of application and development of China’s space station, and it is also the 11th manned mission carried out by China. What are the new changes of Shenzhou-16? What are the differences between it and previous spacecraft?

　　Shenzhou 16: Enhancing the Reliability of Beidou Navigation Signals

　　The Shenzhou 16 manned spaceship had fully inherited the technical status of the Shenzhou 15 spaceship, and its main functions and technical indicators remained unchanged. The difference was that the Shenzhou 16 was a new batch of spaceships, which was of great significance for verifying the technical status of this batch of spaceships.

　　Gao Xu, Chief Designer of the Manned Spaceship System of the Fifth Academy of Aerospace Science and Technology Group:Compared with the previous batch, we have done a lot of work on autonomous control. For example, we have enhanced the reliability of the Beidou navigation signal. We have done a lot of work on the localization of components to improve the level of autonomous control of the spacecraft itself.

　　Mass production multi-line parallel, Shen 17 completes final assembly test

　　Gao Xu introduced that the batch development of Shenzhou spacecraft is very stressful for the team. In the past, the development team only needed to develop one spacecraft at a time, but now the development team needs to complete the development, launch, flight control and return of several spacecraft in parallel, with multiple fronts highly overlapping.

　　It is understood that at present, Shenzhou 17 has completed the final assembly test at Jiuquan Satellite Launch Center and has the ability to stand by for emergency rescue. Shenzhou 18 and Shenzhou 19 are undergoing the final assembly and testing of the whole ship before leaving the factory, and other spacecraft in this batch have entered the stage of single-machine development.

Do we need so many live broadcasts of football matches？

Indeed, it is really convenient for modern people to watch the game nowadays. Even more and more people watch the live broadcast of the game in a year, which adds up to less than watching short videos or scoring GIFs. Then the question is, do we still need so many live football matches?

How many people will watch so many games? I think most people just watch their home team’s games, or those particularly important games. There are too many things in life that are more important than football! When talking about this issue, a British fan said so.

Besides, as a China fan, how much time do you spend watching live games every week? What’s your opinion about the overload of live broadcast of the game? Please tell us together in the comments!

Author |　Adam Hurrey and Amitai Winehouse, ECO kryptonite

Edit |　Gao Xiaochen

Source |　Sports Industry Ecosphere (the original text was published in The Athletic, and it was partially deleted and adjusted due to the need of editing and expression)

The text is 4295 words in total | Estimated reading time is 11 minutes.

Not long ago, the Premier League officially announced:Before all the British fans can return to the stadium to watch the game(as early as May 17th), all events will continue to be broadcast live online in the UK.

This rule may not feel anything to overseas fans. But for British fans, it is a big event that can change their lives. After all, they haven’t watched the football match on TV on Saturday afternoon for decades.

This is due to a long-standing magical rule in Britain-3PM Blackout, which was negotiated and passed by the FA and the league.From 2: 45 pm to 5: 15 pm on Saturday, it is forbidden to broadcast any football match on TV.

The origin of 3pm blackout can be traced back to Bob Lord, Chairman of Burnley Club in 1964.(Bob Lord）A broadcast ban at Tevermore Stadium.In the view of Chairman Bao, the live TV broadcast is harmful to the club besides lowering the attendance rate of the stadium.

△ Center is Bob Lord, then chairman of Burnley Club.

Despite a lot of controversy, President Bao succeeded in persuading more and more clubs to accept it with his golden tongue.Television broadcast of demon theory.After unanimous negotiation, 3pm blackoutKick-off at three o’clock on Saturday afternoon is a tradition in English football.Not only has it become the rules of English clubs, but it has even been incorporated into the British broadcasting law, which makes it a criminal offence to broadcast football matches on TV on any Saturday afternoon in Britain.

However, due to the impact of the epidemic, all the games had to be broadcast online, and the question of whether the broadcast ban should be completely abolished was once again put on the focus of public discussion. But for British fans, although there are more games broadcast, the troubles of happiness have also come:With limited energy, so many games are broadcast live, it seems that I really can’t watch it!

How many people will watch so many games? I think most people just watch their home team’s games, or those particularly important games. There are too many things in life that are more important than football!

When talking about this issue, a British fan said so. His views also represent the voices of many fans.

In this regard, two columnists of The Athletic discussed through a podcast: Do we still need so many live football matches?

Too much broadcast of the game has made people tired of watching the game.

The host of Adam Hurrey The Athletic podcast, Football Cliches.

It has been a whole year since the special situation of being forced to have an empty match due to the epidemic, and the discussion on whether 3pm blackout should be cancelled has been going on for a long time. Therefore, it seems a natural thing to broadcast all the games in the current situation.

However, with the resumption of broadcasting, we gradually found that in the face of so many football matches, watching the ball every day is no longer a pleasure, and it has even become a psychological burden.　

As early as before the epidemic isolation intensified the daily competition in domestic broadcast of football matches, the broadcast of three matches on Super Sunday in Premier League was already a marathon experience for football fans: from pre-match comments to players’ warm-up, from goal playback to VAR slow-motion analysis, from betting recommendation to various advertisements ….. The broadcast of several consecutive football matches in one day is quite challenging for fans to watch and broadcast.

Whether the game involves their favorite team or their annoying team, or involves two teams that they don’t care about.　

△ A busy Premier League weekend screenshot from Tencent Sports APP

A Premier League fan in the UK, watching the game every Saturday, is probably like this:

The first game, kick-off at 12: 30 noon British time:

Ok, at noon, the game will start. Today’s noon match is a match in leicester city (generally speaking, leicester city or Southampton kick off earlier, as evidenced by the data). You will notice the long shadows in the stadium, which is definitely the last light environment that people want to face when watching the match or even playing football games.

In the end, leicester city won 2-0, but the attention of this game was completely covered up by the VAR controversy.

The second game, EnglishKick-off at 3: 00 pm national time:

All right! You’ve watched a game and got into shape. Although the commentators are still discussing the question of whether Team X is excellent or Team Y is rubbish (the conclusion is usually: emmm…… … I think both teams are similar).

The confrontation between the two sides in this game is Crystal Palace vs West Brom, which makes you immediately start to wonder if you should do something else while watching the ball. But you can’t go out when you think about the epidemic; I also think that due to the broadcasting law, there is no advertisement in the live broadcast of the game at 3 pm on Saturday ….. Well, let’s watch another game.

Unfortunately, Wilfrid Zaha, the thigh of Crystal Palace, was injured, and there was one less attraction in the game … It is said that the commentary of this game is famous, but the fans never seem to care about this.

Game 3, kick-off at 5: 30 pm UK time:

Well, it’s prime time for the broadcast, and the strong teams are going to play again. It may be a game in which Manchester City beat a team 4-0, or it may be a showdown between Arsenal and Newcastle. Under the full light of the stadium, the shiny stadium is quite attractive. In addition, there is nothing to watch on TV at this time, which may be the perfect time to sit on the sofa and watch the football match.

At the moment, Jamie Carragher (a former Liverpool player and now a famous football commentator) slides his hand on the screen, showing you all the details of the game you should know, which is great. In the end, it was an excellent game to watch, but it doesn’t seem to be time to put an end to today’s full football marathon …　

Game 4, kick-off at 8: 00 pm UK time:

COVID-19 epidemic, the end of the world, all these things on TV. To tell the truth, Premier League football really doesn’t need to broadcast four whole games a day, especially after 7: 30 pm. Now, you have watched three football matches, and your mind is obviously not on TV. On the sofa, you have already started to brush your mobile phone and saw more than a dozen popular short videos about the coach’s rage or the commentator’s passion for wheat. Although these videos have been forwarded by you, you will forget all about the video content in a short time.

This is often the daily life of a Premier League fan watching the game on weekends.

If the football match is broadcast all day, will I watch it? Yes, obviously, I will, but this is probably just my consciousness as a practitioner, but other fans may not appreciate the broadcast of so many games.

△ Newcastle striker Callum Wilson celebrates the goal

Image: Newcastle United/Newcastle United via Getty Images

Indeed, as long as fans can’t watch the game offline, the Premier League has the responsibility to keep football in the spotlight through more broadcasts.However, don’t underestimate how tired fans will feel in such a marathon. Just for the sake of our poor and tired brains, I hope that the competitors and broadcasters will not regard the countermeasures in this special period as future decisions.　

The broadcast of the game is overloaded? I don’t think so at all!

Amitai Winehouse News Editor

It’s 11 o’clock on Saturday morning. You slept in, got up, had dinner, drank coffee and went out for a walk. Maybe you had a lesson with fitness coach Joe Wicks in front of the TV. So what’s next? I can’t eat any more food, and Zoom’s online test hasn’t started yet. For you, this day seems far away.　

However, you remember, there is a football match today! You looked at the live app on your mobile phone. At 12: 30, leicester city played against Liverpool; At 3: 00 pm, Crystal Palace played against Burnley; At 5: 30 pm, Manchester City played against Tottenham; At 8: 00 pm, Wolves play Chelsea!

As a fan, the distant Saturday was finally saved!

In this difficult period, there are not many interesting things happening. But we can watch all the matches in the Premier League. After watching the matches, you still have many things to do: chatting with friends on social software, playing Fan Texi in the Premier League, and brushing short sports videos … Is there anything more interesting for sports fans?

It can be said that playing football in the open field is meaningless, but online broadcasting can give the game real meaning.Indeed, not many people feel that it is necessary to watch a Southampton-Brighton game with dignity, but it is important that more games are broadcast, so that those Southampton fans and Brighton fans who want to watch this game have a proper way to watch this game.

The competition should belong to the public, not just the hundreds of people who are now allowed to enter the stadium.

In fact, the existence of streaming media just proves why the view that all sports events should not be broadcast is flawed. In any case, I am firmly opposed to the ban on Saturday afternoon games.There are always people who argue that this measure can protect the attendance rate of low-level leagues, but as early as 2018, EFL(English Football League)It has been announced that all Saturday 3: 00 pm games will be broadcast on its cooperative streaming media platform iFollow, and many international regions have also allowed to broadcast the games at this time.　

△ Amazon Prime’s Premier League live broadcast room　

Image: Adam Davy/pool/AFP via Getty Images

What’s more, for fans who want to watch the game offline, it doesn’t matter whether the game is broadcast or not. But if you don’t want to go to the scene, you can certainly find a way to watch the game at home.

In other words, even if the game is not broadcast on the mainstream platforms with copyright such as Sky Sports, BT Sport, Amazon Prime and BBC One, people will find various ways to watch the game, which is not a problem for modern fans at all.Besides, the football club has fallen into financial difficulties, and we can at least make the broadcasting company happy for a while, so that the team’s copyright income can be guaranteed, and the more the better.

So to be honest, although there may be a problem of watching the game on TV, football is now facing a critical moment, so please forget the idea that any match should not be broadcast on TV. Please broadcast all the football matches for us, without stopping for a moment … The broadcast of the games that helped you through the boring time during the epidemic is also an important part of your life.

The above is the discussion between two British sports experts. So, as a China fan, how much time do you spend watching the game broadcast every week? What do you think of the view that the broadcast of the game is overloaded? Please tell us together in the comments!

(End of full text)

Original link: https://the athletic. com/2394322/2021/02/17/Premier-League-Matches-Stay-on-UK-TV-Lockdown-Fans-Bring-It-on-Boring/? source=user_shared_article

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Hot spots？ A mobile phone ＂plays＂ Kunming Sports, and you can make an appointment online.

Kunming citizens can book stadiums online for fitness exercises ~

A few days ago, the digital platform of "Kunming Sports" WeChat WeChat official account was upgraded, and the functions of sports venue reservation, sports map and scientific sports guidance were launched. The citizens can check the sports venues in various counties (cities) of Kunming online and reserve suitable venues.

How to make a reservation? Click on the video to see the raiders ~

In recent years, Kunming Education and Sports Bureau has continuously optimized and improved the public sports service system. In October 2021, it began to build a Kunming smart sports platform and put it into trial operation in March 2023.

The WeChat official account is mainly divided into three plates.

The first plate

The first section is "comprehensive information", which realizes the function of window publicity, integrates and publishes the policy information related to sports development and the achievements of sports development in Kunming, and provides dynamic information on sports development for the masses.

The second plate

The second section is "Sports Together", which provides people with convenient channels such as sports map inquiry, venue reservation, event inquiry and registration, and scientific fitness guidance through online applet functions. A mobile phone "plays" Kunming Sports.

Among them, according to the requirements of "enriching public sports facilities" in 10 practical projects of benefiting the people in Kunming in 2024, no less than 30 primary and secondary schools will be selected to open sports venues to the public in the summer vacation, and citizens can make reservations through the "Kunming Sports" and "WeChat official account Sports Together" applet.

The third plate

The third section is "micro-interaction", which realizes the functions of collecting opinions and suggestions, providing government information services, inquiring about athletes’ registration, and inquiring about the contact information of sports-related departments, so as to collect opinions and suggestions from the public on the development of Kunming sports and jointly tell the story of Kunming sports.

In the next step, Kunming will continue to integrate the information of sports development in Kunming and the information of sports events, so as to provide the masses with more comprehensive sports development trends in Kunming and more convenient channels for participation.

Further strengthen the digital sports platform to upgrade and transform, input the data of sports venues and facilities of primary and secondary schools in Kunming into the digital sports platform, realize online registration, face recognition, identity authentication and other functions, and implement the opening of school sports venues to the society.

We also encourage social sports venues to carry out intelligent transformation, upload information such as people flow, personnel information and venue use to the intelligent platform in real time, realize real-time monitoring and sharing of national fitness data, realize big data analysis of mass sports regionality and sports needs of different groups, and timely adjust short-term sports work plans and project layouts in combination with medium and long-term development plans to meet the different fitness needs of the masses.

Reporter Yu Suyan

Photo: Kunming Sports

Editor Yu Suyan

Audit Zhang Liya

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In 2024, a model of examination papers and answers in Yunnan Province came to the attention. Since 2025, the college entrance examination in Yunnan Province has paid attention to the examination of English listening and speaking. In Tsinghua University, civil engineering majors have stopped recruiting, and they have paid attention to it. For more high school students’ must-see content, click here for the Kunming-Yunnan Education New Media Matrix.

Today’s headline, Weibo, Xinhua and Renmin.

Original title: "Hot spots, a mobile phone" playing "Kunming Sports, online can make an appointment"

Read the original text

Do aquatic dinosaurs exist or not？

　　The prehistoric creatures

　　Intern reporter Dai Xiaopei

　　In the evolutionary history of dinosaurs, one of the biggest mysteries is: Are there aquatic dinosaurs? Although we know that ichthyosaurs, plesiosaurs and canglong all live in water, according to their position on the evolutionary tree, they are not strictly dinosaurs, but only close relatives of dinosaurs. So why are aquatic dinosaurs so rare?

　　Spinosaurus is an atypical aquatic dinosaur?

　　In fact, among the dinosaur fossils found, there are not dinosaurs that did not live in water at all.

　　In 1912, people discovered a kind of theropod dinosaur in Egypt — — Fossils of Spinosaurus, which lived in the Cretaceous period from about 110 million to 93.5 million years ago.

　　According to the early data released by scientists, Spinosaurus was 12.6 to 18 meters long and weighed 7 to 20.9 tons. In recent years, more complete specimens support early research, and scientists found that Spinosaurus could grow to a length of 15 to 15.6 meters. However, the latest data estimate that its weight is 6.4 tons to 7.2 tons. Unlike most dinosaurs, Spinosaurus had some unique spines on its back, forming a sail-like structure. According to public information, the spines on the back of Spinosaurus were at least 1.65 meters long. The spine of Spinosaurus is an extension of its vertebrae, which researchers believe can help Spinosaurus regulate its body temperature or show its unique charm.

　　"After comparing Spinosaurus with crocodiles, people think that Spinosaurus may be aquatic." Xu Xing, a paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology of China Academy of Sciences, told the Science and Technology Daily reporter that according to the skull shape of Spinosaurus, it was found that the skull of Spinosaurus was long and narrow, similar to that of modern crocodiles. Specifically, the mouth is slender, and the direction and size of teeth help it catch fish and fix its prey in the mouth.

　　In addition, by analyzing the fossils of individual Spinosaurus, some scientists found that there were fish scale residues in the stomach contents of Spinosaurus. "This shows that Spinosaurus ate creatures in the water, and it can be speculated that Spinosaurus may live on the shore or in the water." Xu Xing said that another evidence that Spinosaurus lived in water is that studies have found that the isotopic composition of Spinosaurus bones is close to that of aquatic animals.

　　However, Xu Xing stressed that there is no very conclusive evidence that Spinosaurus must have lived in water. "Because Spinosaurus didn’t have a fin-like structure like aquatic animals such as sea lions or seals. This shows that Spinosaurus cannot live completely in water and is not a typical aquatic animal. " He said that according to the existing findings, it is not easy to judge whether Spinosaurus lived in the water or on the shore for a long time.

　　"According to the teeth and skull of Spinosaurus, people think that Spinosaurus mainly lived by eating fish, but Spinosaurus is just a kind of dinosaur with a special feeding habit, and generally speaking, Spinosaurus just goes into the water to prey and then returns to land life. Therefore, we cannot put forward ‘ Aquatic dinosaur ’ The concept. " Xing Lida, an associate professor at China Geo University, said.

　　Dinosaurs were aquatic animals?

　　Some scientists believe that dinosaurs were originally aquatic animals. This statement stems from a puzzle: how did the slender legs of dinosaurs support its huge body? Brian Ford, a cell biologist at Cambridge University in England, tried to explain that dinosaurs mainly lived in water and supported their bodies by buoyancy. He said that dinosaurs swam in the lake most of the time, and their tails provided assistance, and their footprints were printed into the mud.

　　According to Ford, it can explain why archaeologists often dig dinosaur footprints, but there are few traces of dinosaur tails. Compared with modern large animals such as elephants and rhinoceroses, dinosaurs had small legs but fat tails.

　　"It makes sense to think that dinosaurs lived in water." Ford said, "dinosaurs used water to support their weight, float their tails, regulate their body temperature and get food."

　　However, Paul Barrett, a paleontologist at the Natural History Museum in London, believes that this statement makes no sense. He said that with the help of the principle of load-bearing structural engineering, researchers have proved that the strength of dinosaur leg muscles is enough to support its body to walk easily on land. Moreover, dinosaurs had difficulty breathing and walked slowly in the water. "They may live near water, and sometimes they go into the water to cool off, but I don’t accept the theory that they live in water." Paul said.

　　In 2007, scientists found traces of dinosaurs’ claws at the bottom of the water in the Carmelos basin in northeastern Spain, which became conclusive evidence that "dinosaurs could swim". In 2011, Chinese and American paleontologists found a group of strange footprints with only toe marks and no heels in Chicheng County, Hebei Province. Experts believe that this is the hard evidence of dinosaurs playing in the water — — Tracers leave scratches on the bottom of the lake after entering the water. As the depth of the lake increases, their feet can touch less and less water bottom, and their footprints gradually weaken, and their three toes can not be completely preserved.

　　Completely aquatic dinosaurs don’t exist?

　　Although there is evidence that some dinosaurs lived in water, Xing Lida still opposed the concept of "aquatic dinosaurs". “‘ Aquatic dinosaur ’ It is only a hypothesis put forward in recent years, but it is extremely easy to include Syngnathus, Canglong, plesiosaur, etc., confusing concepts. "

　　Xu Xing also told reporters: "According to the existing research, there are no pure water dinosaurs. Let’s just say that there is some evidence that dinosaurs lived in water for some time. The limbs of plesiosaurs, ichthyosaurs or sea lions and seals will undergo height changes to adapt to life completely in water, but there is no evidence that such dinosaurs exist at present. "

　　Strictly speaking, no real aquatic dinosaurs have been found. Xu Xing believes that there are two possibilities. First, dinosaurs did not give priority to occupy the water niche in the era when they lived. At that time, the water environment might be occupied by crocodiles and other aquatic animals. Second, there may be aquatic dinosaurs, but they have not become mainstream species, and the fossils of such dinosaurs have not been preserved or discovered.

　　"In recent years, with the deepening of field trips, people have discovered more and more strange dinosaurs. The current fossil record has not fully revealed the diversity of dinosaurs. " Xu Xing said that the original fossil record is deficient, some deficiencies may be remedied, and some deficiencies may exist forever.

　　What’s the point of studying dinosaurs and even arguing about whether dinosaurs were aquatic or terrestrial?

　　"First of all, it can prove some evolutionary phenomena. Species are always changing, such as from big to small, from land to air. Scientists hope to reveal the law of change. " Xu Xing said that the current ecosystem is called the world of birds and flowers, characterized by beautiful birds and flowering plants, and this ecosystem evolved from the Mesozoic ecosystem dominated by dinosaurs. We need a lot of data and fossil records to reveal this evolution process.

　　At the same time, scientists should also reveal which factors affect the evolution of life, such as genes or environment. "It is also important for human beings to understand their own lives to understand the laws of the evolution of all things." Xu Xing said.

　　Related links

　　This dinosaur can also swim and hunt in the water.

　　At the end of 2017, research teams from Italy and other countries discovered a new dinosaur fossil in the late Cretaceous strata of Mongolia, which was roughly waterfowl-like. This new dinosaur species was named Eichzka, commonly known as "duck dinosaur". "Duck Dinosaur" has a long and curved neck, and its forelimbs are fin-shaped. It can walk on land like a duck and swim with its forelimbs. They also have many tiny teeth suitable for eating fish. Another feature of "Duck Dinosaur" is that its beak and upper jaw have many small holes, which were once filled with nerve endings. This kind of mouth has a similar structure to the beaks of some waterfowl. This shows that "duck dinosaurs" may have preyed in the water or at the bottom of rivers and lakes.