For the gift, start research and development of graphene batteries

Chapter 107

After the netizen whose ID is only playing Shadow Demon said that it can't be restarted, the live broadcast room fell silent instantly.

Even the two guests were a little speechless.

Good guy, why didn't I think of such a simple question.

Although I don't know if it is useful, but after the electronic product is stuck, it is solved by restarting.

Although the self-driving vehicle is relatively large and expensive, in the final analysis, its essence is a large-scale electronic product, and it seems that there is no problem with the restart method.

Just looking at the Aurumi team, it seems that they didn't react.

The audience in the live broadcast room just looked at Tuanmu's team, scratching their heads and scratching their heads, but couldn't find any problems.The team of Tuanmu was in a hurry, and the audience at the scene was even more anxious.

Finally, after a while, a staff member of Tuangi glanced at his mobile phone. Someone must have sent him a message. Then Tuangi completely cut off the power of the car and restarted it.

Seeing that the vehicle has become normal, the live broadcast room is completely quiet.

Unexpectedly, the problem was finally solved by restarting.

This is a bit speechless.

Of course, this kind of power cut is not an ordinary power cut, it is not the kind of key that everyone understands, it is to completely cut off the power supply of the whole vehicle.

The power outage when we use the vehicle normally does not completely disconnect the power of the electronic device, only the power of the small battery of the whole vehicle is cut off.

Of course, what's more, on the main board of the vehicle controller, there is a button battery to maintain the important information of the CPU.If necessary, the electricity here should also be cut off.

Although the Aurumi team did not reproduce this bug in the end, the problem was temporarily solved by restarting.

And in the next test, this situation did not appear.

This performance confirms the speculation of netizens. This is a relatively rare BUG, ​​and it is not the daily performance of the Atsugi team's automatic driving system.

Although there are various explanations for this situation, this is a challenge competition, and each performance will be scored.In the end, because of the Suzuki team's first mistake, the Suzuki team scored particularly low in this round.

Other teams also have their own performances.

Each company has its own plan for the dimming of the line markings encountered in the case of automatic parking.

Like Xia Ke Academy, it is to improve the accuracy of sensing and add fuzzy algorithm estimation to solve this problem.

The sensing accuracy is affected by the resolution of the camera on the one hand, and the algorithm of the software on the other.

The resolution is related to the hardware, and the technology of Xiake Academy has an advantage in this respect.

Thanks to the three-in-one solution adopted, plus the blessing of infrared sensing at night, the Xia Ke Academy team's camera accuracy is very high and the effect is very good.

Jiang Ming and the others can clearly see the images taken in the background, which is very good.

As for the algorithm, because it is fuzzy sensing, software modeling is required to simulate the situation on the spot, and at the same time, the parking spaces are completed based on big data.

It's simple to say, but there's a lot involved.

After this round, in general, except for some manufacturers with problems in strength, the performance of each company is similar.

Next is the test of emergency avoidance.

This test was also carried out using a simulation scheme.

In the track, every not far away, there is a dummy to simulate passers-by.Let the vehicle go at a certain speed and see how the system reacts.

How to put it this way, it is not difficult to pass.

Because in the era of fuel vehicles, many high-end models have this function, and it works well.

Especially for barrel and Oudi vehicles, high-end vehicles are basically equipped with all series.And this feature, which has been used for decades, has been adjusted to the best state.

This test match is not so much a competition of skills as it is a competition of foundation.

And for the perception of this fixed object, each manufacturer has a solution.

Even if the intelligence of the whole system is not high, it is still relatively easy for this kind of fixed scene.

Although this function is not difficult for most manufacturers, there are still surprises in everything.

And the team that had the problem this time was the team of Tela.

I don't know if it was not adjusted properly, or the friction coefficient of the ground did not match. Although the special vehicle started to brake from a distance, it somehow failed to brake and crashed straight into the dummy.

Everyone thought that the Tela team would be eliminated in this competition.Unexpectedly, at the last moment, another system on the Tesla seemed to be activated.

When the distance from the dummy is only tens of meters, it assists in braking.In the end, the car came to a halt.

Terra's performance stunned the live broadcast room and the people at the scene.

Everyone did not expect that such a situation would happen to Tesla, which has always been a leader in the field of autonomous driving.

This kind of unstoppable situation is relatively rare, and can be encountered in the challenge race, so will it often appear in the process of daily driving?

Reminiscent of the recent period, some Tesla users reported that they had occasional brake failures when driving a Tesla vehicle.

There are even individual customers who have reported that they have indeed met the braking time limit, and because of this, they have had traffic accidents.

Because such traffic accidents are rare, when everyone saw the news, they subconsciously thought that it was caused by the driver's error.

Now it seems that what the exposer said seems to be the case.

The so-called seeing is believing, the video is here, and everyone can see it.

Although there was still a distance of tens of meters in the end, Tetra came to a halt, but the people watching were not fools.Finally stopped, there must be a situation.

Douya Dou live broadcast platform.

Because Tesla has always been a leader in the field of autonomous driving, it has attracted a lot of attention.

Most of the free time is aimed at Tesla's vehicles.

Seeing Terra's performance, several people were also dumbfounded.

"Mr. Zou, come and analyze it for us. Why didn't Tesera stop at the beginning? What was the reason why it stopped at the end?"

Keke opened her mouth and consulted Zou Ming.

Zou Ming was not sure, but he was from a foreign company after all, so he was quite concerned about companies like Tela.

He also saw the news that there was a problem with the Tesla vehicle and it couldn't stop.

Zou Ming did some special research before, but in the end he still couldn't find the problem with the vehicle.

Seeing Tela's defeat this time, Zou Ming was not sure, but he still spoke cautiously:

"This question, how should I put it, has various possibilities. Here, I will analyze it for everyone."

Zou Ming laid out the surplus in advance.

First of all, we have to make sure, how does the vehicle's braking system work?
When a traditional car brakes, the vehicle's driving computer controls the brake disc according to how hard the driver applies the brakes, giving different friction forces, thereby generating braking resistance.

Braking and powering the vehicle are two relatively independent processes that do not interfere with each other.

This kind of control system has been used in traditional cars for hundreds of years and is very mature.

But in new energy vehicles, there are many enterprises, the power and braking of the vehicle are not necessarily two processes.

For example, the car companies represented by Tesla design vehicles that can simply rely on the accelerator to drive and brake the vehicle.

The purpose of doing this is actually to improve the cruising range of the vehicle.

Traditional vehicles, because of the blessing of a large amount of fuel, can unscrupulously lose the energy of braking in the form of heat.

But new energy vehicles are different. If this part of energy is simply dissipated as heat, it would be a pity.

And because now for new energy vehicles, there is battery life anxiety.In this case, it is not advisable to waste energy for nothing.

Therefore, in new energy vehicles, a more important function is energy feedback.

Thanks to the development of motors, it is possible to use a single motor to realize the operation of power output and energy feedback through software control.

For Tesla models, in order to enhance the efficiency of energy feedback and make the vehicle last longer, the traditional accelerator is further optimized.

In the past, the accelerator and brake were independent. If you give fuel, the vehicle will have sufficient power. If you don’t give fuel, it’s just that there is no follow-up power, but there will be no braking phenomenon.

But now, if you give oil, the vehicle will run, and if you don't give oil, the vehicle will be in a braking state.

Theoretically, the movement and stop of the vehicle can be achieved by controlling the degree of opening and closing of the accelerator.

How should I put it, this function looks beautiful, and the efficiency of energy recovery is very high.

However, in terms of control logic, it is difficult to implement.

After all, the braking force generated by the motor energy feedback is not as efficient as the brake disc.

As a result, you feel that you have let go of the accelerator, generating braking force, and wanting the vehicle to stop as soon as possible.But the system thinks that the feedback efficiency is the priority, and brakes slowly for you.

Eventually, the vehicle would not stop.

Of course, this kind of unstoppable situation does not happen every time, and it must be at one point.

After all, it is impossible for Tesla's system to prevent your vehicle from stopping for the sake of energy.

There is a balance point in the middle, and it should be extremely easy to go wrong.

Judging from the situation, there should be a problem this time.

It has to be said that Zou Ming has done a lot of research before, and many people listened to this in-depth analysis with great interest and opened their eyes.

Shake, shake, live broadcast, barrage:

Xiaoxiao: This teacher Zou is still a little level, at least in principle, there is no problem with what he said.

Obviously there is you: Yes, it does make sense.And I suspect that Tela did not find any specific problem, otherwise it would be impossible to allow this kind of thing to happen.

Tianming: No, Tesila still has this kind of rubbish operation?If you can't find the problem yourself, just say it's the car owner's problem. Isn't this too unethical?

Hao Xiang: Hehe, you just know.You still don't understand the operation of Tesla?I heard that some time ago, Tesla's vehicles could not be charged. The customer service staff of Tesla told the car owner that the fluctuation of the power grid was too severe.

Cao Ni: Yes.I've heard that too, and it's outrageous.In the end, the person who made the power grid had to come forward to clarify.

All of a sudden, there were different opinions, and they all exposed Tella's show operation.

"Another question is, why did Tesla's vehicle stop so badly at the end?"

Some netizens swiped votes frantically on the barrage, asking Zou Ming to explain this problem.

After all, although it didn't stop at the beginning, it was finally stopped by special means. This is a fact.

"This"

Zou Ming was also a little embarrassed. To be honest, Zou Ming really didn't see what the problem was.

"Teacher Wang, what do you see?"

Seeing that Zou Ming was in a bit of trouble, Ke Ke pointed the microphone at Wang Shuang and asked.

"This, I didn't see clearly either."

Although I really want to show it, as a professional in the industry, Wang Shuang still has his own professional ethics, so he said.

Of course, this question is difficult. No one can see it in the huge live broadcast room.Everyone was not surprised by Wang Shuang's answer.

It stands to reason that if this kind of difficult problem cannot be solved, everyone will tacitly not talk about it, and discuss it after the meeting.

But how should I put it, this question is very critical, and if it cannot be answered, everyone always feels like it is stuck in their throats.It's hard to feel up and down.

Thinking of this, everyone left messages in the live broadcast room, asking to shake the platform and contact the organizing committee to see if they could provide analysis.

Originally, Keke didn't want to pay attention to it, but the water friends in the live broadcast room, as if they had reached an agreement, swiped the screen in unison, asking for an explanation.

Seeing this situation, Ke Ke was also a little helpless.

There is no other way, Ke Ke can only appease everyone:

"I have reported the request of all netizens to the organizing committee, and I believe there will be an explanation soon. But this problem is very difficult, and we still need to give the experts some time."

Hearing Keke's words, the netizens in the live broadcast room also recognized Keke's point of view.

Although netizens no longer swipe their screens, it is obvious that netizens are not in the mood to watch the performance of other teams for the time being, and they are all in a state that we have been waiting for.

This situation annoyed the Dou Ya Dou official.

The Douya Dou Platform Operations Department quickly reported the matter to the organizing committee, asking for a preliminary explanation to appease the netizens.

Originally, the organizing committee thought it was a small problem. After all, Tesera is here. If it really doesn't work, just ask them.

It's just that when the organizing committee contacted TELA, TELA resolutely refused to admit that his vehicle was not braked, and believed that his driving system was functioning normally.

As for why the brakes were stopped at the final stage, it was also because the road conditions at the scene were poor and the braking distance was relatively long.

In fact, at the beginning of braking, the system has already calculated the final braking distance.

Although the distance to the dummy is relatively short, it is carefully calculated by the system. Netizens don't have to worry, everything is under the control of the driving system.

As for the principle of the last brake, according to Tesla's point of view, this involves the core secrets of the company, and there is no comment.

Hearing Terla's domineering answer, the organizing committee of the challenge was dumbfounded, is there something wrong?

Although I don't know if the technical explanation of Tesla is correct, but such a long braking distance, is this a normal phenomenon?

It is said that there is a problem with the ground. I have never seen other teams have brake problems. You are the only one who has it?

Tetra is a bit of a bully!
(End of this chapter)