Tesla suspects that the brakes are out of order? Doubts abound. Whose side are you on?
16 At 2 o'clock in the afternoon of June, a Tesla model happened on Jiangnan Avenue in Nanchang. 3. Accidents that collide with roadside mounds at high speed and catch fire (incident reporting portal). In this accident, the vehicle was burned and the owner was injured but not life-threatening. This incident has aroused widespread concern because it happened for a strange reason. According to the owner, before the accident, this one? 3 out of control, first suddenly accelerated, and then stepped on the brake pedal unresponsively. After avoiding dozens of cars in a row, the vehicle finally hit the mound on the side of the road.
From this video, we know that the accident vehicle was indeed driving at high speed before the collision, and made an action to avoid the vehicles on the road. According to the owner, he has been driving for more than 20 years, and the vehicle suddenly accelerated to 127km/h without any reason before the accident. Feeling that the vehicle was abnormal, the owner quickly stepped on the brake pedal, but he said that "stepping on the brakes is the same as not stepping on the brakes, and the vehicle did not respond." The owner had to avoid the road vehicles by controlling the steering wheel, and finally hit the mound, causing the vehicle to catch fire.
The strangeness of this accident is that, according to the description of the owner, the vehicle accelerated itself without turning on the assisted driving, indicating that the accelerator pedal was abnormal. Then the brake pedal failed again, and there was no response when stepping on it. You know, in the design of a car, the accelerator pedal and the brake pedal are controlled by two independent systems, and the possibility of their failure at the same time is extremely low.
Tesla's official response briefly describes the safety design of the accelerator pedal and brake pedal, indicating that the accelerator pedal and brake pedal of its models have two independent position sensors. Once there is any error (for example, the accelerator pedal position in this paper does not match the actual vehicle acceleration state), the system will cut off the motor torque by default. In addition, if the sensor senses that the accelerator pedal and the brake pedal are pressed at the same time, the system will also think that the brake pedal has a higher priority, thus judging that the acceleration instruction is invalid and executing the brake instruction instead.
According to the Tesla survey results of Netexposure, the following four points were found:
1: A few minutes before the accident, there was a signal to step on the accelerator, but there was no signal to step on the brake;
2. After on-site investigation, no brake marks were found in the accident section;
3: The vehicle speed when the system detects the collision is112 km/h;
4. When the system detects a collision, there is a signal to press the accelerator pedal, but there is no signal to press the brake pedal.
According to Tesla's Investigation Report, official evidence shows that the owner did not seem to step on the brake pedal a few minutes before the accident (there was no signal to step on the brake pedal, and there was no brake trace on the road), but stepped on the accelerator pedal (there was a signal to step on the accelerator pedal, and the speed reached 1 12km/h during the collision). This report inevitably makes people think that the cause of the accident is that the owner mistook the accelerator pedal for the brake pedal.
Will an old driver with more than 20 years' driving experience mistake the accelerator pedal for the brake pedal and not find it for a few minutes? In view of this problem, there are two kinds of views on the Internet at present. One is that Tesla has quality problems or design defects, which leads to the loss of control of the vehicle. Although Tesla claimed that there was no brake pedal signal a few minutes before the accident, this does not mean that the owner did not step on the brake pedal; There is also a saying that the problem lies with the owner, because it is unlikely that the acceleration system and braking system of the vehicle will fail at the same time.
In response to this accident, we also specially consulted people in the field of vehicle engineering. The other party said: The Bosch iBooster brake-by-wire system adopted by Tesla has almost no complete brake failure. Even if the iBooster fails, it can still be braked by mechanical assistance, and there is HBC(Hydric) of ESP system. Brake? Compensation) can assist hydraulic power to achieve braking.
Hypercast comments:
After reading this accident, I believe many netizens will think of the "Xi 'an BYD Tang DM out of control" incident on 20 19. The accident finally determined that the vehicle control system was normal and pointed the finger at the driver's driving behavior. As for the results of this investigation on Tesla's out of control, we won't speculate now, but such accidents often happen and are often concerned by the public, which should also attract the attention of car companies. I think car companies can solve these problems through technical means, such as how to prevent drivers from stepping on the accelerator by mistake in a hurry, and how to prevent vehicles from suddenly accelerating on urban roads and hitting obstacles at high speed.
From the owner's point of view, we can see that when the accident happened, the owner was actually in a weak position. Because there is almost no evidence and lack of professional knowledge, we can only passively wait for the official investigation results. Therefore, we also suggest that when you encounter similar experiences, you should try to record the events and keep all the evidence to avoid being unknown afterwards.
This time "model? The "3 suspected out-of-control incident" is just a microcosm of Tesla's relatively tortuous development in China this year. It has also experienced storms such as "reducing distribution doors" and reducing prices to protect rights. In contrast, Weilai, another new car-making force that was once dubbed as unable to survive in 2020, has had a smooth life this year, experiencing a sharp rise in share price and higher sales volume, and has also received high investment from Hefei government and "preferential treatment" from the state on new energy subsidies. Recently, Weilai received another round of investment from domestic Internet giant Tencent.
In fact, Tencent's determination to enter the automotive field has long been well known, but CEO Ma has made it clear that the company does not intend to manufacture its own vehicles. Tencent may hope to pave the way for the layout of the automotive sector by investing in vehicle companies. In 20 14, Tencent co-founded Weilai Automobile with other investors, and participated in Weilai's financing many times in the following period. In 20 17, Tencent also acquired a 5% stake in Tesla and became the fifth largest shareholder.
Weilai has been using Tencent's music and video services in the in-vehicle system. It can be seen that Tencent hopes to expand its services in the automotive field and seize new "traffic portals" by investing in vehicle companies. But is Tencent's way of "getting on the bus" limited to this? Of course not, this is just a step for Tencent to enter the automobile industry, and it has greater ambitions.
A few days ago, Tencent Smart Travel held an online new product launch conference and released two car apps, Tencent Accompanying and Tencent Love Listening. Tencent hopes to replicate its software ecosystem in smartphones and personal computers in the automotive system. It is understood that up to now, Tencent has cooperated with 29 mainstream automobile brands, landing more than 1 10 production models, and is still expanding.
When the 2C business of automobiles started, Tencent did not lag behind in the 2B business. Its new generation of autonomous driving virtual simulation platform TAD? Sim？ 2.0 was officially unveiled at the 2020 Tencent Smart Travel New Product Launch Conference. The platform, together with Tencent's cloud platform and high-precision map products, can help car companies make their autonomous driving technology develop rapidly and iteratively.
Hypercast comments:
Among BAT, Baidu first launched the driverless car project on 20 13, and invested heavily in the field of driverless cars. In 20 15, Baidu CarLife car networking system and Baidu map were launched, dedicated to building the car ecology. Alibaba's entry into the automotive field is relatively conservative. 20 15 chose to cooperate with SAIC to develop zebra intelligent driving machine system, and then set foot in the automobile field to build an ecology. Later, the development did not go smoothly. Although Tencent's layout in the automotive field is not too early compared with the other two in BAT, it has clear play and clear thinking. Expand the entrance of software ecology by cultivating vehicle enterprises and cooperating with vehicle enterprises in 2C field, and then try to realize it after reaching a certain scale; In the field of 2B, car companies rely on their own technical advantages in software to support weak disciplines such as intelligent networking and autonomous driving.
Intelligence and networking are changing the automobile industry, which not only gives technology companies like Tencent the opportunity to enter the market, but also makes many traditional car companies tend to cooperate with technology companies and even jointly develop cars. Just this week, two traditional car companies reached strategic cooperation with technology companies, namely NVIDIA and Mercedes-Benz, and Volvo and Waymo.
It is worth mentioning that on June 19, Daimler, the parent company of Mercedes-Benz, announced that it would stop cooperation with BMW in the field of autonomous driving. This seems to prove to some extent that it is very difficult for the two car companies to develop autonomous driving technology because their demands for functions will be different. In contrast, the cooperation between Mercedes-Benz and NVIDIA is more like the cooperation between Party A and Party B. Party A puts forward functional requirements and Party B is responsible for meeting them, which is much more harmonious.
In fact, before Mercedes-Benz, Invista also had close cooperation with Xpeng Motors, Tesla and other car companies, which enabled NVIDIA to cultivate very rich experience in the field of autonomous driving. With this experience, NVIDIA can gain a good bargaining chip in the cooperation with Mercedes-Benz. The annual sales volume of Mercedes-Benz exceeds one million, which can not only help NVIDIA get rich profits, but also help NVIDIA collect vehicle driving data through a large-scale fleet, thus feeding back the growth of autonomous driving technology.
DRIVE released by the company recently? AGX？ Orin computing platform has a good performance in power consumption and computing performance. Officially, the computing platform with the function of "L2+ level assisted driving" will have the computing power of 200TOPS and the power consumption is only 45W. The computing platform with the function of "L5 autopilot" will have the computing power of 2000TOPS and the power consumption will be 800W W W. In contrast, the Tesla 3.0 hardware platform with 144TOPS computing power will consume nearly 200 W.
According to the official, Waymo will become the exclusive global partner of Volvo, Polaris and Lectra brand L4 autonomous driving technology. The core of this cooperation is Waymo's autopilot platform "Waymo? Driver. The core goal of cooperation is "Waymo?" Driver is installed on a brand-new pure electric vehicle platform, thus creating application scenarios and business models including online car service.
The company focuses on the research and development of L4-class self-driving cars, and also has a deep layout in terms of self-driving hardware. Previously, the company also had in-depth cooperation experience with many car companies, including Fiat Chrysler and Jaguar Land Rover. The cooperation with Volvo will help Waymo realize a new business model and help Waymo rapidly expand the scale of self-driving cars in the commercial and personal fields through Volvo's rich automobile product line.
Hypercast comments:
We found that the interaction between car companies and technology companies has become more active recently, which was not common in the past. The reason may be that since more than a decade ago, intelligence and networking have taken the lead in rapidly developing iterations in the products of science and technology enterprises. Nowadays, science and technology enterprises have accumulated profound technology in software and hardware related to intelligent network connection. However, in recent years, the automobile industry has clearly defined the development direction of intelligence and networking. Therefore, through technical cooperation with science and technology enterprises, automobile enterprises will be able to quickly apply the technical experience of science and technology enterprises and quickly respond to this change in the automobile industry.
The cooperation between Mercedes-Benz and Volvo and technology companies has one thing in common, that is, they will eventually achieve automatic driving above L4 level through cooperation. When powerful technology companies and powerful automobile giants are combined, it may stimulate a strong chemical reaction and catalyze the rapid development iteration of autonomous driving technology. But then again, through the deep binding with technology enterprises, although new fields can be quickly laid out, in the long run, the development of enterprises will still be passive, which is not conducive to product differentiation and innovation. From this perspective, if we can be highly self-sufficient in core technologies like Tesla, we will be more active in the development of car companies. what do you think? (Figure/text? Car home? Hu Yongbin)