In summary, the vehicle is running at a higher speed, and the driver starts to depress the brake pedal with a lighter force. After that, the automatic emergency braking function is activated and has a function, which improves the braking force and reduces the impact of the collision. The driving system is normally involved in the work and reduces the speed of the car. According to data released by Tesla, Tencent Technology is authorized to sort out the opinions of users.

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Opinion 1: Tesla has a situation where it selectively releases data that is beneficial to its own side The data disclosed by Tesla through the media is incomplete and cannot give a clear conclusion on the cause of the accident. Tesla has more detailed and richer data, but it has not announced it. There is a suspicion that selective publication of the published data is beneficial to oneself. Zhihu user Shi Gaoba believes that data such as the data of the brake pedal depth sensor is selectively not released by Tesla. The braking process requires the participation of multiple systems, including at least the brake pedal switch sensor, pedal depth sensor, motor, vehicle controller, ESP system (including ABS), the activation of AEB emergency braking, and the participation of forward radar. As a result, only a few seemingly professional data such as vehicle speed, pedal switch signal, and brake cylinder pressure were given. The pedal depth data, motor speed signal, and forward radar data are all given to completely restore the process of the car owner’s braking, motor speed and vehicle speed verification, and forward radar to see the distance of the vehicle ahead. The data of the brake pedal depth sensor can truly reflect whether the owner has stepped on the pedal violently, and whether the pedal cannot be stepped on due to the increased resistance of the pedal. Tesla said that the driver stepped on the brake pedal, but did not release the data. Zhihu user Mr. He said that Tesla has more abundant data, but Tesla has not disclosed it publicly. Currently, only Tesla is equipped with an EDR (Event Data Recorder) data recorder, which can be understood as a black box. The measurement frequency of the data recorded by the black box EDR is currently unknown, only Tesla employees. But the amount of data measured is definitely detailed, borrow a picture: As can be seen from this figure, the key information recorded by Tesla’s EDR is: Vehicle speed; odometer; camera data, braking and acceleration data, short video clips of accidents, safety system data, etc. If you want to analyze what happened when the accident happened, I think some key information is needed: Collision sensor signal: can know the time of the collision Brake signal: It is not only necessary to know whether the brake is pressed, but also to know the stroke of the brake pedal (how much the brake is pressed). Brake cylinder pressure signal: can know whether the brake cylinder provides boost Accelerator pedal signal: Including the degree of opening, you can know if the accelerator was stepped on before and after the accident Speed ​​signal: can know the current speed ABS/esp signal: can know whether ABS is activated and whether esp is activated or not Motor status: including motor speed, quadrant, motor torque, etc., to see if the motor is still providing driving force when the brake is stepped on. ibooster status: able to know the distribution of braking torque. Vehicle failure information: whether there is a failure Note that the above data requires raw sensor data. Taking the brake pedal as an example, in addition to knowing the final opening signal, you also need to know the most original voltage signal. The voltage signal is the true sensor value. Viewpoint 2: Sufficient braking measures have been given According to Tesla, the vehicle is traveling at a higher speed, and the driver starts to depress the brake pedal lightly. After that, the automatic emergency braking function is activated and works, increasing the braking force and reducing the impact of the collision. , The braking system is normally involved in the work and reduces the speed of the car. Zhihu users questioned this statement, believing that the driver depresses the brake pedal in 23.17 seconds and triggers abs in 25.74 seconds, and sufficient braking measures have been taken. The following are the views of Zhihu user Kang Jianmao: It can be seen from the data that the driver depresses the brake pedal from 23.17 seconds, the pressure of the master cylinder gradually increases, and then triggers abs at 25.74 seconds (at this time aeb does not start, indicating that the driver has already done so without the help of aeb The maximum deceleration capacity of the vehicle was reached by stepping on the brakes), and then the pressure of the master cylinder continued to rise, until it reached the peak value in 27.63 seconds (maybe aeb, or it may be a miracle of the owner’s life and death). However, Tesla’s own text stated that within 2.7 seconds of stepping on the brake, the pressure of the master brake cylinder was only 45.9 bar. Please, did you step on the abs at that time? What does it mean? How many people can step on abs when driving? Then Tesla himself said that the brake pressure gradually increased to more than 90 afterwards. Anyone who knows a car knows that once the ABS is started, it has basically reached the maximum braking capacity of the vehicle, and then it will not work if it is stepped on. Tesla also said that aeb played a role and successfully helped slow down, excuse me? This wave of data actually proved that the driver stepped on the brake hard enough. After all, it was the abs that was stepped on by others. Then even if the aeb system intervened, it did not help to decelerate. If you can’t stop it, you can’t stop it. Viewpoint 3: Deceleration is 0.6g, the braking ability given by Tesla cars is not enough Under normal circumstances, the braking of a family car is 1g, but Tesla’s ABS trigger condition is only 0.6g, which is lower than that of a normal family car. The following are the views of Zhihu user Kang Jianmao: According to the data given by Tesla itself, from a speed of 94 in 25.41 seconds to a speed of 48.5 in 27.45 seconds, the vehicle speed dropped by 45.5 kilometers per hour when the ABS was triggered in 2 seconds (that is, full braking). The total is 12.63 meters per second, and the average acceleration is 6.3 meters per second. This braking ability really proves that Tesla can’t stop. The ABS is only about 0.63g, and the normal family car is close to 1g. The following are the views of Zhihu user cao sir: Dare the driver lightly step on the brake to trigger ABS, but hardly stepping on the brake is not enough to trigger ABS. Is this logical?

The under eye patch is advertised as a product to help get rid of the swelling on the skin. Some manufacturers even promise the patches can remove wrinkles. But there are some rules you should never forget to use eye patches effectively and without harming the skin. – Do not use your hands to remove the under-eye patch from the box. The women in the advertisements often use their fingers to apply the patch under their eyes. But if you put your finger in the container, there’s a good chance bacteria can get in. So it’s best to use a special tool to remove the patches. Some manufacturers put the tool in an under eye patch holder. – Don’t leave the patches on your face for too long. The manufacturer recommends spending only 15-20 minutes to apply the patches. And there is a reason for this. When the patches provide all the moisture they have, they begin to draw moisture out of the skin, leading to more wrinkles. Therefore, you should not leave the patch on your face for too long. – Do not store the stickers in the refrigerator. Some experts think it’s better to put the patch in the refrigerator before using it. And some people put them in the refrigerator all the time. Cold patches will reduce figs quickly but patches may be less effective if they are kept cold for a long time. Ideally, you should simply place the pack of patch in the refrigerator 20 minutes before using it. 2. Ice cream In the advertisements, women put a variety of creams on their faces. But even the best cream out there can turn your face into a greasy pancake if you take too much. Interestingly, in the advertisements, they spread the cream evenly over their face so that all skin areas have the same amount of cream. But this is not always the case. You need to find the driest areas of your face. Maybe some spots have more wrinkles and need more cream. On average, any skin type only needs a pea-sized maximum of cream for the entire face. Applying a little cream over the T-zone is the easiest part. 3. Clay mask Ads and even some manuals say that clay masks should be left on until they are completely dry and even begin to crack. But this is wrong – it will only harm the skin. Clay absorbs excess oil and removes dirt, but if you leave it on for too long, it absorbs moisture in the skin and makes it excessively dry. In addition, the dry clay will pull on the skin, which can cause new wrinkles. So, you should apply clay mask for 10 minutes and remove them before they dry again. 4. Paper Masks The reason why paper masks are so effective is because they adhere so tightly to the skin. It is better to spend more time removing all wrinkles and letting the mask touch all areas of the face than it is to apply and remove. Applying these masks will not cleanse the skin. If you do not wash your face with the gel, the active ingredients in the mask will not be able to penetrate the skin. Remember to carefully read the instructions for use! Some masks should not be used every day. Other masks can stay on skin longer than 15-20 minutes, and some need to be rinsed off after you remove the mask. 5. Exfoliate your skin Exfoliants have strong particles that damage the skin more than exfoliate the skin. To get rid of dead skin, it’s better to use products that contain acids. If you still like mechanical exfoliation, wear gloves and cleanse your skin. Another common misconception is that oily skin requires regular use of exfoliants. In fact, the more often it exfoliates, the greasy the skin is. So, do not exfoliate more than 2-3 times a week. If you use acidic products, apply sunscreen before going outside. Most sunscreens are advertised to be used on sunny days and when it’s cloudy. Remember to apply sunscreen right away, even if you are not using acidic beauty products to avoid chloasma and premature aging. 6. Other mistakes – Consuming too many beauty products in a row can be harmful to your health. Today, there are so many beauty products out there that we buy and use them all at the same time. But be aware that some ingredients should not be used together. In addition, when you use too many products at once, you can clog pores and decrease the protective function of your skin, even if all products are of high quality. – Scrubbing your face too hard can damage your skin. Cotton swabs and towels can stretch the skin if you rub it too much on your face. If you use a cotton swab to apply skin care products, make sure the cotton swab is wet. It just slides on the skin without stretching the skin. If you regularly use one motion to wash your face, chances are you haven’t washed the upper forehead, chin area, and ears. So, pay attention to those areas when washing your face.

Recently, Tesla owners’ rights protection at the Shanghai Auto Show continued to ferment.

On the 22nd, Tesla went on a hot search again. This time, the data was finally released.

30 minutes, over 40 brakes The final braking speed was 118.5 kilometers per hour!

On the afternoon of April 22, Tesla China released data for the 30 minutes before the accident. The data showed that in the 30 minutes before the accident, the vehicle had more than 40 records of depressing the brake pedal.

Tesla also made a text statement saying, When the driver stepped on the brake pedal for the last time, the data showed that The vehicle speed is 118.5 kilometers per hour . Within 2.7 seconds after the driver stepped on the brake pedal, the maximum brake master cylinder pressure was only 45.9 bar. After that, the driver increased the stepping on the brake pedal and the brake master cylinder pressure reached 92.7 bar. Immediately after the forward collision warning and automatic emergency braking function was activated (the maximum brake master cylinder pressure reached 140.7bar) and played a role , Which reduces the magnitude of the collision. 1.8 seconds after the ABS is applied, the system records the occurrence of the collision. After the driver stepped on the brake pedal, the vehicle speed continued to decrease, and before the collision, the vehicle speed was reduced to 48.5 kilometers per hour.

To sum up, the vehicle is running at a higher speed, and the driver starts to depress the brake pedal lightly. After that, the automatic emergency braking function is activated and played a role, increasing the braking force and reducing the impact of the collision. The braking system is normally involved in the work and reduces the speed of the car.

for The condition of the vehicle 30 minutes before the accident, Tesla described the following:In the 30 minutes before the vehicle accident, the driver drove the vehicle normally, with more than 40 records of depressing the brake pedal. At the same time, the vehicle exceeded 100 kilometers per hour many times and stopped repeatedly.

The relevant person in charge of Tesla said that he will unreservedly cooperate with the regulatory authorities to carry out in-depth investigations and openly accept social supervision.

Tesla said again late at night:

Will cooperate unreservedly in the investigation

On the evening of April 22, Tesla posted a post on Weibo stating that it once again promised that it would cooperate with the regulatory authorities to carry out in-depth investigations without reservation, and openly accept social supervision. With the consent of the customer, government designation or supervision, the three parties will jointly witness and conduct testing at any qualified and authoritative testing organization across the country.

The following is the full text:

Dear customers, netizens and media friends:

Thank you for your continued attention.

We fully accept the decisions of the State Administration of Market Supervision and Zhengzhou Municipal Market Supervision Administration, and do our best to actively cooperate with all relevant investigations, effectively fulfill the main responsibility of quality and safety, and provide consumers with high-quality and safe products and services.

As of April 21, we have provided complete driving data (hereinafter referred to as the data) half an hour before the accident, and have proactively contacted and communicated with related parties and reported the relevant situation many times. The specific progress is as follows:

1. Communicating progress with the family of the client Ms. Zhang

2. In order to negotiate with customers as soon as possible on the time and form of data provision, on the afternoon of April 22, 2021, our staff contacted Ms. Zhang’s husband several times by phone and text messages, but no reply was received.

3. In order to provide customers with the required data as soon as possible, on the afternoon of April 22, 2021, our company will send the sealed paper version of the data to Ms. Zhang’s registered contact address in our company by express mail, a total of 48 pages , 6697 articles.

4. On the afternoon of April 22, 2021, our customer support department sent the electronic version of the data to Ms. Zhang’s personal mailbox registered in our company via company email.

5. Communicating progress with Zhengzhou Municipal Market Supervision Administration

6. On the afternoon of April 21, 2021, our company took the initiative to communicate with the Zhengdong New District Market Supervision Administration of Zhengzhou City (hereinafter referred to as Zhengdong New District Municipal Supervision Bureau); at 18:00, our company went to Zhengdong New District Municipal Supervision Bureau to receive orders as required Rectification notice.

7. At about 11 am on April 22, 2021, our company went to Zhengdong New District Municipal Supervision Bureau to communicate and provide written materials. Zhengdong New District Municipal Supervision Bureau requires our company to provide data directly to customers.

8. During April 21 and 22, 2021, our company communicated with the relevant work comrades of the Zhengdong New District Municipal Supervision Bureau responsible for handling this case many times and submitted application letters, urging third-party appraisal agencies to intervene in the matter and express our willingness to undertake All costs incurred in the appraisal.

   At present, we have not received any opinions on whether the client concerned agrees to conduct a third-party appraisal, or any suggestions on choosing a specific appraisal and testing agency. In the next step, we will continue to contact customers sincerely and actively, respect the wishes of consumers, and promote the safe resolution of incidents.

   We have implemented the requirements of the State Administration of Market Supervision and Administration and the Zhengzhou Municipal Market Supervision Administration in the first time strictly and item by item, safeguarded the vital rights and interests of consumers with practical actions, and sincerely won the understanding and support of consumers.

   We promise once again that we will unreservedly cooperate with the regulatory authorities to carry out in-depth investigations and openly accept social supervision. We are willing to jointly witness with the consent of the customer, government designation or supervision, and conduct testing at any qualified and authoritative testing organization across the country.

   Thank you again for your understanding.

   Zhengzhou City Market Supervision Administration:

   Receive data when both parties are present

   According to JiMu News, at 5:46 pm on April 22nd, related Tesla staff told reporters that they had already taken the official seal data to the Zhengzhou Municipal Market Supervision Administration on the morning of the 22nd, but the staff of the bureau suggested that, It is up to the owner of the car involved to dock and receive.

   

   According to Elephant News, on the afternoon of the 22nd, the husband of Ms. Anyang Tesla Chezhang told reporters that the staff of the Zhengzhou East District Municipal Supervision Bureau had notified the progress of the matter over the phone. Under the supervision of the Zhengzhou East District Supervision Bureau, go to the 4S shop to take the driving data away.

   

   Tesla’s person responsible for handling the accident said: “We have sent the data email to the customer. The customer has not answered the phone, and (we are) sent it to the email address the customer filled in when they bought the car through the company email.”

   New voice from Tesla rights defenders:

   Detection cannot keep up with technological development

   Soon after Tesla announced the situation one minute before the data restoration accident, another car owner, An Baojia, who participated in the rights protection, uttered a voice on Weibo, responding to why he did not perform a third-party identification. He said that “testing cannot keep up with technology” and it is difficult for authoritative appraisal agencies to be the dilemma faced by car owners after the current smart car controversy.

   

   On Weibo, Anbaojia first expressed joy that Tesla started to provide data. He expressed his gratitude to the motherland and human rights defenders. “There was no clear relevant legal basis before. (Background data) Tesla did not give it, and consumers had nothing to do. Consumers found the Consumers Association, and the Consumers Association had nothing to do. In the past few days, they have just received approval from their superiors for pure electric vehicles. Consumers have the right to know the traffic data generated during use and driving, and companies need to provide them unconditionally. With this provision, there will be disputes in the future, and it will be much easier for everyone to get the data.”

   It’s not easy to get the data, but Anbaojia raised a second question: “I don’t understand, and I can’t analyze the specific causes of the accident.”

   Anbaojia said: “There is a car friend who does related work, but he can’t analyze it. I don’t know which organization can interpret this data.”

   

   According to a report from the Beijing Daily, most of the vehicle appraisal agencies recognized by the relevant judicial departments were established earlier. Previously, they had basically conducted accident appraisal for fuel vehicles. Through consultation with several automobile testing agencies, the other party stated that they can perform hardware testing for vehicles, but if there are problems with software or systems, the existing technology of the agency cannot guarantee the detection.

   An industry insider who did not want to be named said that the agencies that conducted accident identification on fuel vehicles in the past may not be able to adapt to the needs of smart cars. The reason is that smart cars are built on the basis of computer technology, so the effect of car owners stepping on the brakes in the event of an accident is likely to be affected by system calculations. Therefore, traditional appraisal agencies can only appraise whether the brakes in the current situation are normal, and cannot appraise the brakes of the vehicle when an accident occurs. To completely restore the truth of the accident, car companies also need to provide background data.

   But even if car companies provide back-end data, whether the back-end data is complete and whether it has been modified has become a point of contention. In addition, a service staff member of a testing agency also said that, like many of Tesla’s emerging technologies, testing agencies now do not have equipment testing software. The most “authoritative” may be the manufacturer’s own analysis.

   This has caused the smart car accident to return to the embarrassing situation of the manufacturer’s “speaking of one family” without a third-party authoritative corroboration.

   Vice President Tao Lin resigned?Tesla: rumors

   After the Shanghai Auto Show’s rights protection incident was fermented, Tao Lin’s “no compromise” attitude on behalf of Tesla was criticized by the central media. On April 21, Tao Lin was absent from the Boao Forum for Asia, and the voice of her resignation began to circulate on social media.

   China Business News reported that Tesla responded: This is a rumor, and Mr. Tao is working normally.