Yu Chengdong and He Xiaopeng exchanged words over the air, not for AEB

If I don't quarrel with Huawei, I really can't.

The person who said this was none other than Li Xiang, the CEO of a car company with the most combat effectiveness on Weibo. But even he couldn't shout out the famous "Listen to me first" in front of Huawei.

▲Who will you vote for?

However, recently there was a car company CEO who took the initiative to stir up trouble, prompting Yu Chengdong himself to respond, and the battle became more and more intense. More and more car company leaders joined in, causing a quarrel from WeChat to Douyin, and from Douyin to Weibo. There are absolutely no signs of fading.

What has caused such a big stir is not even a new thing, but a feature that has existed in cars for a long time – the AEB automatic emergency braking system.

60km/h, AEB’s safety line?

He Xiaopeng recently mentioned an "industry chaos" in an interview with Garage 42. He bluntly said that 99% of the AEB tests conducted by friendly companies are fake.

It is fake. Those promotions are not officially released by the company, but all come from short videos.

At the same time, he also said that the false triggering rate of AEB of friendly companies is too high and there are certain risks.

Although He Xiaopeng did not name his friends, he also mentioned: "Xiaopeng doesn't like to use 'private videos' to emphasize being far ahead, but wants to make the technology solid."

Anyone with a discerning eye can understand that what He Xiaopeng is referring to is Yu Chengdong and the AITO car behind him.

Of course Yu Chengdong is not stupid. He immediately made a series of remarks in WeChat Moments to reply to He Xiaopeng.

Hurry up and experience it! Even the top leaders of car companies don’t even understand what AEB is!

Some people simply don’t understand what AEB is! It’s almost the same as some people who say that smart driving is bullshit/liar!

Lack of basic understanding of the industry’s technological progress and future development!

Some car companies are busy doing smart driving all day long, and the AEB active safety test results are very poor. When I asked, I found out that they didn't even implement the basic functions of AEB. This surprised me! Either he was fooled by his subordinates, or he lacked the most basic understanding of the development of the automobile industry!

Below these remarks is an article forwarded by Yu Chengdong, titled "OTA major upgrade, does not rely on high-precision maps, smart driving can be driven nationwide." The article mentions the AEB enhancement and active safety capabilities brought by Huawei's ADS 2.0 high-end intelligent driving upgrade.

Specifically, Huawei ADS 2.0 has launched automatic emergency braking GAEB for special-shaped obstacles, with the maximum braking speed increased to 90km/h.

But in He Xiaopeng's view, this speed limit is not set reasonably.

He Xiaopeng said that the speed when AEB is triggered should be within 60km/h. Once the vehicle is accidentally triggered when the speed is too high, it will cause huge shock to users . "This is simply unacceptable."

Ling Shiquan, CEO of Geely Radar, also expressed the same concern. He believes that the core of AEB is safety, but it is by no means that the higher the braking speed, the safer it is.

Let me give you some data to understand. The maximum braking deceleration of AEB can reach 1G (equivalent to the feeling of falling from a jumping machine). Moreover, full braking of AEB at high speed can easily lead to vehicle instability. Especially when AEB is accidentally triggered, the consequences will be more serious. . Therefore, the maximum braking speed range for AEB in the industry to avoid collision is 50km/h-60km/h.

Their concerns are justified. If AEB is triggered while driving at high speed, the vehicle behind may not have time to react, causing a rear-end collision. What's more serious is that if the driver mistakenly turns in a panic, it may cause the vehicle to lose control and roll over, causing a worse accident.

Ling Shiquan believes that true AEB safety lies in covering more emergency braking scenarios without accidentally triggering AEB, rather than simply pursuing the highest braking speed of AEB. In scenarios where the speed is above 60km/h, functions such as ACC and LCC should be used for pre-comfort braking.

Has the point of human-machine co-driving arrived?

On the evening of November 7th, Dianchedi launched a live broadcast to conduct an on-site test of the AEB capabilities of 7 models of static fake cars, including the Wenjie M5 and Xiaopeng G6 and G9.

Different from the conventional test, this test conducted by Dianchedi was conducted in an environment with no light at all and the vehicle only turned on the low beam headlights. Regardless of whether this setting is reasonable or not, let’s look at the test results of the two vehicles:

The Wenjie M5 was able to stop in front of the fake car at speeds of 30-80km/h, while the Xpeng G6 hit the fake car in the first round of testing, and the speed of this round of testing was only 30km/h.

▲ Wenjie M5 stops in time

▲Xpeng G6 crashed into a fake car (the lights turned on after the collision)

The pressure of public opinion immediately pointed at Xiaopeng.

The next morning, He Xiaopeng posted a long response in WeChat Moments. He first questioned the test conditions of the car expert.

In the five-star safety evaluations of China and Europe, there are many strict restrictions on the AEB environment, mainly in low-speed dynamic and certain light environments. Many of Xpeng's vehicles have received or are about to receive double five-star safety evaluations, and some even rank at the top in some scenarios.

He believes that if the vehicles are tested according to the scene in the video, even if all five-star safety vehicles are tested, the result will probably be the same.

But why do Wenjie M5 test scores so well? The key to the problem lies in the new GOD universal obstacle detection network added to Huawei ADS 2.0.

To put it bluntly, Huawei has enhanced AEB with intelligent assisted driving . Looking at the configuration table of the AITO World Series, you will find that only the smart driving versions of M5 and M7 have GAEB and other capabilities, and the regular version does not support them.

▲Wenjie M5 Smart Driving Edition

This approach is not the first of its kind by Huawei. The first one to do this was actually Tesla, the current leader in smart driving.

Since the implementation of the occupied network push, Tesla's AEB working range has been increased from the previous 8-150km/h to 5-200km/h. At the same time, the AEB capability for crossing dynamic obstacles and general obstacles has also been improved.

Having said that, doesn’t Xpeng Motors, which ranks first in domestic smart driving, have this capability? Of course it's impossible.

He Xiaopeng said in a 900-word circle of friends that this function is actually the basic capability of all high-end autonomous driving manufacturers. The reason why Xiaopeng did not do this is because:

They are unwilling to confuse automatic assisted driving with human active driving at this stage.

AEB systems are generally designed as passive safety systems, as opposed to other functions in automated driving, such as adaptive cruise control or active lane keeping assist, which adjust the vehicle at all times when automated driving is active. , rather than responding only to emergencies.

Huawei's idea is to blur the boundaries between the two systems and allow the vehicle to avoid accidents as much as possible. However, if AEB is accidentally triggered, the vehicle may go against the driver's wishes. He Xiaopeng believes that there are certain risks in such an approach.

He Xiaopeng said that before intelligent driving empowers AEB, Xiaopeng must first complete the optimization of intelligent assisted driving capabilities, and then based on data performance, stably and reliably bring some capabilities to the human-centered active driving safety field, with a false trigger rate of Down to the level of one part per billion.

In terms of active safety strategies for manned driving, we must remain in awe of the human-centered nature of technology and the accumulation of experience, and be very cautious to avoid causing other safety or experience problems, or excessively reducing the driving boundaries of people driving by themselves, making it seem safer. In reality, the losses outweigh the gains.

Professional people do professional things

After talking so much, in the final analysis, He Xiaopeng only had one concern – false triggering.

Generally speaking, car companies would rather not trigger AEB and try to reduce the probability of false triggering as much as possible. Safety is of course one aspect. From another perspective, false triggering of AEB will make the accident more complicated.

If it is a man-made accident, the relevant unit only needs to identify the responsible person and determine the liability according to law. If the accident is caused by the accidental triggering of AEB, it will not only lead to unpredictable deaths and injuries, but also put the car company into a moral quagmire.

Therefore, in the early development stage, a large part of the engineers' work is on design verification for false triggering to improve the accuracy and reliability of AEB.

In fact, the adjustment of AEB tests the experience of car companies and involves many factors. Therefore, during the research and development stage, car companies will repeatedly conduct tests in all possible scenarios to obtain data.

But once the media gets involved in this matter, things may change.

In the media's AEB tests, it is not ruled out that some OEMs will increase the AEB trigger threshold of the vehicles submitted for inspection in order to make up for their own shortcomings in capabilities – this is an almost zero-cost thing for car companies. .

In this way, even if there is no benefit transfer between the OEM and the media, the latter will not know when someone is being used as a weapon.

On the other hand, in some media's lax AEB tests, they usually only use "whether it collides with an obstacle" as the only criterion for judging the performance of a vehicle's AEB system.

In fact, the design purpose of AEB has never been to prevent collisions , but to try to minimize the impact of a frontal collision by reducing vehicle speed. This point is emphasized in the product manuals of Wenjie M5 and Xpeng G6.

For the media, it is a more important task to guide consumers to correctly understand the boundaries of AEB's capabilities .

If you must measure AEB, please bring it with you from an authoritative agency.

Anyone with wheels is interested and welcome to communicate. Email: [email protected]

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