Henan Business Daily reporter Zeng Lingtong
April 25, the female owner of Tesla , who had previously "roof rights protection" at the Shanghai Auto Show expired. After the detention period was lifted, the owner of the car owner also immediately made his voice and questioned the data released by Tesla. The experts analyzed the data.
[The owner of the car who has expired his rights to defend his rights and responded to Tesla's previous statement that his family said he would protect his rights to the end]
On the evening of April 25, the owner of the car first issued a public apology for his excessive rights protection. "I'm sorry for taking up public resources because of my excessive rights protection behavior. I apologize to you here. Thank you very much for your criticism and education of the Shanghai government and the public security department, and thank you for your attention and understanding. Protecting rights itself is not illegal, but the methods you take must be legal, compliant, reasonable and reasonable. I am in good health at present, and thank you for your concern."
Tesla's roof rights protection female car owner screenshot on Weibo
Then, she expressed several doubts about Tesla's recent attitudes and practices.
mentioned in the statement of Tesla at 3 pm on the 19th that Tesla has always maintained active negotiations with the owners in the past two months and proposed a variety of solutions. The owners do not accept any form of third-party testing and strongly refuse all the proposals proposed. The car owner said, "In fact, from March 27 to today (25th) morning, Tesla has never actively communicated with us, nor has it actively resolved the matter. I have never expressed that I do not accept third-party testing, but that I do not accept the third-party testing agency they designated."
In response to Tesla's public release of data, she said: "Tesla has privately released the data publicly, and according to Article 8 of , the Consumer Rights Protection Law of , , . It is certain that the data belongs to our car owners and should be handed over to us directly. Tesla's private disclosure of the data to the public without my consent infringes on our personal privacy and violates the legitimate rights and interests of our consumers."
The female car owner said that regarding the data released by Tesla on the 22nd and the data sent to her email address by Tesla, she believes that this is not the original data of her vehicle. Tesla is asked to publish the data source, extraction method, production method and screening principles. As for the personal data that Tesla has provided to her, she also conducted a rough analysis, believing that there is a major concealment and serious unreasonableness.
and its family responded immediately: "The rights protection will be carried out to the end."
At the same time, Tesla also spoke out late at night on the 25th, saying that "has contacted the family of the car owner" and "struggle to start the next mediation as soon as possible under the guidance and supervision of the government, and promote third-party testing."
[The data exposed by Tesla has a theoretical possibility of forgery]
Is the data released by Tesla objective, or is it a major concealment as the car owner said? Can third-party testing restore the truth? On April 25, a reporter from Henan Business Daily interviewed Zhang Xiang, a member of the think tank of the Ministry of Industry and Information Technology’s new energy and intelligent connected car industry.
"After the data was sent out, there was a doubt that Tesla owners were driving on non-highways but were able to drive more than 100 kilometers per hour, so netizens questioned whether the data involved the issue of fraud." Zhang Xiang told a reporter from Henan Business Daily.
The data tables released by Tesla similar to "excel" give people a situation where data can be easily changed, which has attracted netizens to question Tesla's "blame".
"In fact, there is indeed a possibility of forgery on the data released by Tesla." Zhang Xiang said.
Zhang Xiang introduced that as a Tesla entity, the company is both a data manager and a data user, and it is difficult for people not to think a lot.
"This is equivalent to that he is both a referee and an athlete, so at present, the data he released cannot be guaranteed from credibility to authenticity," said Zhang Xiang.
So as such a mature automotive industry, is there no corresponding anti-counterfeiting technology in the industry?
"Although there is, it is not applied in the automotive industry, which is a pity." Zhang Xiang introduced.
It is understood that the relatively mature anti-counterfeiting technology in the industry is currently generally recognized as blockchain anti-counterfeiting technology, but this technology has not yet been applied in the automotive industry. "So if professionals participate in the forgery, it is indeed not easy to discover, but without evidence, we really cannot draw conclusions." Zhang Xiang said.
After Tesla announced the driving data of the vehicle involved in the incident one minute before the incident, due to the clear data such as "speed as high as 118.5 kilometers per hour", coupled with the emergence of many professional terms such as bar and brake master cylinder pressure, netizens then questioned that "Tesla deliberately transferred the brake problem to dangerous speeding."
So according to the data released by Tesla, can we prove our innocence?
[Tesla's brake system includes brake system, ABS system and AEB automatic emergency braking system]
"If you want to know whether there is a problem with Tesla's brake, you must first understand what the existence of Tesla's brake system is." Zhang Xiang told a reporter from Henan Business Daily.
According to Zhang Xiang, Tesla's current brake system is mainly divided into three parts.
"is the braking system, ABS system and AEB automatic emergency braking system," said Zhang Xiang.
The working principle of the entire brake system is that when the owner presses the brake, the vehicle's caliper is responsible for holding the entire wheel, and then the car will be braked to death. The ABS system prevents the wheel from being locked.
"Because after the vehicle wheel is locked, the locked wheel is likely to slip, causing an out of control." The AEB system is an automatic emergency braking system, which is either called A21 or A22 or above.
The working principle of AEB is to automatically detect the distance between the car in front. If the two cars are too close, even if the driver does not step on the pedal, it will start the brake system by itself, thereby achieving the purpose of slowing down.
[Zhang Xiang: This data from Tesla indirectly proves that the car actually has problems]
According to data released by Tesla, when the driver pressed the brake pedal for the last time, the data showed that the vehicle speed was 118.5 kilometers per hour. Within 2.7 seconds after the driver pressed the brake pedal, the maximum brake master cylinder pressure was only 45.9 bar. Then in a short time, the brake master cylinder pressure reached 92.7 bar. Immediately after the forward collision warning and automatic emergency braking function were activated and played a role, reducing the amplitude of the collision. 1.8 seconds after the effect of ABS, the system recorded the occurrence of the collision. Before the collision, the speed of the vehicle involved was 48.5 kilometers per hour.
"But it happened that this data from Tesla proves from the side that there are actually problems with the car." Zhang Xiang said.
Zhang Xiang introduced that the emergence of the argument was mainly due to Tesla's AEB automatic emergency braking system "falling the chain when it should take effect."
It is understood that the AEB automatic emergency braking system is not the "standard configuration" of this car series. After purchasing a new car, the car owner needs to spend an additional 70,000 to 80,000 yuan to enjoy the system. After the accident, the car owner repeatedly emphasized that he not only stepped on the brake pedal, but also stepped on it to death. Why did a rear-end collision accident occur?
Under normal circumstances, the AEB system should automatically start when it is 30 to 50 meters away from the car in front. According to data released by Tesla, from the brake to the occurrence of an accident, the AEB system does not work until the last 1 second before the accident.
"That is to say, after he (the owner) purchased the automatic emergency braking system, the system did not provide the owner with corresponding guarantees. The AEB system started too late, so it is precisely because it drove fast but the brakes did not stop, which proved that there were certain problems with the brakes of the car." Zhang Xiang said.
[Seeking third-party testing agencies to identify and restore the truth of the matter is an "impossible task"]
Can the third-party testing agencies that Tesla and the car owners have been struggling to find can restore the facts of the entire incident fairly and justly?
In Zhang Xiang's view, in fact, finding a third-party agency to test is actually an "impossible task".
It is understood that Tesla's autonomous driving hardware is actually an autonomous driving chip called "FFD" released by Tesla in 2019.
"This represents the latest and most advanced chip manufacturing process in the entire industry, so if you want to analyze its hardware design defects, you need to ask many chip experts and automotive experts to jointly analyze it. This is an impossible task." Zhang Xiang told a reporter from Henan Business Daily.
In addition, Zhang Xiang clearly pointed out that the testing standards and specifications for smart cars with autonomous driving functions have not been issued yet, so it is not easy to conduct a third-party appraisal for this accident.
Zhang Xiang also said that the names of the testing institutions currently provided by Tesla are very vague and there are no specific units. Now third-party agencies do not have the ability to detect liability for smart car traffic accidents, and cannot do testing without standards and regulations and testing tools and equipment.
[Electric vehicle technology is quite mature, citizens do not need to be "shocked birds"]
Previously, many netizens also proposed, "The operating principle of electric vehicle is different from that of fuel vehicles. After releasing the accelerator, more 'smart' electric vehicles will not slow down in a short period of time, but will tend to 'maintain' the normal speed. Therefore, it is not that Tesla is wrong, it is just that drivers are not familiar with it."
But Zhang Xiang said that in fact, netizens' ideas are not very correct. In fact, after the accelerator of a gasoline car is loose, the vehicle speed will definitely decrease as the vehicle injects decreases. Correspondingly, after the accelerator of an electric car is loose, the vehicle will produce an energy recovery function and will not maintain its previous speed.
"But it depends on the situation. When the driver loosens the accelerator, he must check whether other switches have been triggered, such as cruise control, or ACCh function. In this case, it may maintain the same speed, but generally speaking, after the accelerator of the electric vehicle is loose, the vehicle's speed will also drop." Zhang Xiang said.
After Tesla's "step on the car door" incident, many netizens also questioned that the electric vehicle technology is not yet perfect, and there are still many technical problems. They even worried about whether they can buy electric vehicles in the future.
"In fact, netizens' worries are redundant. Although there is still a long way to go for electric cars, the overall technology is actually very mature now, and the brake technology of electric cars is also very mature." Zhang Xiang told a reporter from Henan Business Daily.
According to Zhang Xiang, according to data statistics previously released by the industry, the number of electric vehicles is about 5 million. The current problem is that electric vehicles have "battery combustion".
"But in fact, according to data previously released in the industry, the chance of its spontaneous combustion is only 1/3 of that of fuel vehicles. This brake door incident is a problem with a Tesla brand. There is no need to be too nervous, and there is no need to kill it with one blow." Zhang Xiang said.
(Henan Business Daily editor Shi Shangjing)
