For the gift, start research and development of graphene batteries

Chapter 113 Old Wang's vision is so accurate!

The live broadcast room was boiling, and was shocked by the performance of the Xiake Academy's vehicles.

And the key point is that no one can understand how the vehicles of the Xia Ke Academy can avoid this problem.

You know, the vehicles passing by in front of you are either simply broken up near the intersection, or they are going the wrong way.

The vehicles of Xia Ke Academy are too eye-catching inside.

It's not just that the netizens are curious about the vehicles of Xiake Academy, as colleagues, other manufacturers around are all looking inquiring.

It's just that Xia Keyuan didn't pay attention to everyone's eyes.

Of course, it's not that Qin Ruya doesn't want to respond, it's that she hasn't recovered from the shock.Qin Ruya couldn't figure out when the automatic driving system they developed performed so well, something was wrong.

Looking at the other members of the team, they also looked surprised.Obviously, as developers, they don't know why.

But when Qin Ruya saw Jiang Ming, her heart skipped a beat, as if she had thought of something.

If anyone in the team had the ability to solve this problem, it was Jiang Ming.

Looking at Jiang Ming's indifferent appearance, it is obvious that he understands this situation very well.

"Jiang Ming, do you know what the problem is?"

Qin Ruya spoke, pointed to the parked car on the monitor, and asked Jiang Ming.

"I have an idea, but I'm not sure."

Jiang Ming said so.

"Oh. What's the problem?"

Everyone was very curious about this and asked like this.

"If I'm not wrong, there should be a problem with the vehicle's navigation."

Jiang Ming analyzed it like this.

Nonsense, everyone knows that the navigation has appeared, otherwise the vehicle would not go the wrong way, but why there is a problem with the navigation, and why the automatic driving system of Xia Ke Academy is not affected, this is the key.

Although he knew that what Jiang Ming said was nonsense, who told Jiang Ming that he had an idea.Compared with those who don't understand anything, they have a great advantage.

Therefore, Qin Ruya continued to ask patiently:

"Oh, can you be more specific?"

"The problem of navigation is nothing more than several aspects, signal, positioning and the navigation system itself."

Jiang Ming said.

"The navigation system itself."

Just as Jiang Ming was about to continue talking, Wang Wei from the organizing committee came in at this moment, signaling to communicate with Jiang Ming.

Jiang Ming had no choice but to stop explaining.

After Jiang Ming talked with Wang Wei, Jiang Ming understood Wang Wei's intention.

Just as Jiang Ming thought, the organizing committee was worried about the inexplicable navigation error of the vehicle.

It stands to reason that the navigation error is a problem with your manufacturer's system and has nothing to do with the organizing committee.If your navigation is wrong, it means that your system is not working and you need to improve it.

If it is said that only a few cars have this problem, it can be explained.But now that so many cars are having problems, that's a bit unusual.

Among them, the normal vehicles of Xiake Academy are very eye-catching.

Of course, the most important thing is that other manufacturers, so far, have not been able to analyze the reason.

Encountering this kind of problem, the organizing committee was very troubled.There was no other way, the organizing committee had no choice but to go to Wang Mingyang again and ask him to help.

To say that Wang Mingyang also had enough trust in Jiang Ming.

I heard that the Xiake Academy where Jiang Ming works, the vehicles are normal, but the vehicles of other manufacturers are not normal.Wang Mingyang concluded that this matter can only be resolved by Jiang Ming.

Who made the driving system developed by Jiang Ming work properly? Who made Jiang Ming happen to be at the scene? He had previously analyzed the reason why Tetara's vehicle lost control.

In this way, Wang Mingyang betrayed Jiang Ming with joy, and asked Wang Wei to go directly to Jiang Ming, believing that Jiang Ming must have a solution.

After receiving the instructions from old Mr. Wang Mingyang, Wang Wei came to the team of Xia Ke Academy without stopping.

In Wang Wei's mind, if he wanted to solve this matter, Jiang Ming still had a great advantage.

After all, Jiang Ming's vehicle was the only one that was not affected.

Of course, this matter is not simple. With so many cars having common problems, it is still difficult to find outliers among them.Naturally, Jiang Ming would not refuse Wang Wei's request, especially since it was Wang Mingyang who introduced it.

It's just that Jiang Ming is not a god, and he still needs to analyze it based on the data on the spot.

To this end, Wang Wei coordinated with other manufacturers to collect the data, and then compared them one by one, trying to find the problem.

According to Jiang Ming's speculation, general navigation issues involve several aspects:

Navigation systems, signals and positioning.

Of course, in fact, the latter two can actually be attributed to the problem of positioning.

So many vehicles use different navigation systems, and before that, there was no problem with navigation.From this point, the problem of the navigation system can basically be ruled out.

As for the signal problem, it is mainly the judgment of big data and the problem of network positioning.

Generally speaking, the positioning of the navigation system is carried out through satellites.By reading the broadcast address of the satellite, the current specific location of the device is calculated.

The most commonly used one is GPS, and of course there is also the Beidou satellite of Xia Guo.

In this regard, as long as the signal can be received, generally speaking, the problem is not very big.

Another kind of positioning is positioning through the network.

In the case of a network, the vehicle will use the surrounding base stations for positioning.In this way, real-time network signals are required, and then positioning is performed.

Due to automatic driving, the positioning accuracy is relatively high, so the frequency of positioning is also relatively fast.In this case, the requirements for network and wireless traffic are relatively high.

Therefore, driving systems, in general, use satellite signals for positioning.

Only enable wireless positioning unless the satellite signal is very weak and the positioning cannot be achieved.

If there is a problem with navigation, there is a high probability that there is a problem with satellite positioning.

But Jiang Ming saw that the satellite positioning signal was very strong, so there shouldn't be any problems.

Thinking of this, Jiang Ming called up the software, and then manually calculated the positioning distance of the satellite signal.It's just that it's not ignorance, it's shocking.

Why is the distance a bit off?

There is no problem with the satellite signal itself, but after receiving and processing, problems arise.

In the massive amount of data, there is a flag that will periodically report an error. It was 1 before, but now it is 0.

This sign generally has little impact, but it still has a certain impact in high altitude areas.

In occasional cases, it will lead to a deviation in the positioning distance.This deviation may not be very large at the beginning.

However, after systematic processing, the cumulative error will become larger and larger, and eventually the navigation distance will become farther and farther.

People from other manufacturers did not find this problem because the local deviation of this data is very small, but after global calculation, the deviation is very large.

It was discovered so quickly because Jiang Ming compared the positioning data of other manufacturers with Fuxi's data, and then discovered the problem.

It's just that Jiang Ming couldn't figure out why there was such a deviation.

And why there is no problem with the Fuxi system is also a bit strange.

Jiang Ming carefully studied Fuxi's data and found the problem.

According to Jiang Ming's speculation, it should be that the error correction mechanism of the Fuxi system discovered the error in the satellite positioning data, and then under this mechanism, switched to the network positioning mode and recalibrated the data.

The systems of other manufacturers did not find this deviation, and then used the wrong data, resulting in the deviation of navigation.

But how to solve this problem is a difficult problem.

But no matter what, it is not easy to find the problem.

Immediately, Jiang Ming told Wang Wei his guess.

In just over half an hour, Jiang Ming found the problem. At this moment, Wang Wei admired Jiang Ming so much.

Wang Mingyang's vision is really accurate.

Before Wang Wei heard that Jiang Ming was engaged in lithium batteries, and asked him to analyze the problem of automatic driving, Wang Wei was still worried that he might not be able to figure it out, thinking that Wang Mingyang was just using people to fool them.

Looking at it now, it was Wang Mingyang who built a strategic position, but their organizing committee was a bit petty.

The problem has been found. As for the solution, Jiang Ming has a suggestion.

It is to artificially switch the signal of the vehicle from the satellite signal to the network signal.

The network signal is not affected, so there is no problem with the vehicle's navigation.

Of course, the signal cannot be switched manually.Not to mention whether the vehicle is allowed to be manually modified, many driving systems do not have a manual switching function.

To update the program of the system separately, the workload is heavy.

Jiang Ming didn't have any good ideas for this.

Wang Wei brought this problem back, and after some discussion, there really was a solution.

There's a device called a jammer, the kind that jams satellite signals.

The organizing committee found several signal jammers and placed them on the surrounding hills, blocking the satellite signals in this area for a short period of time.

Then, in order to reduce the impact of the network signal, several network devices were temporarily installed inside the mountain to ensure the smooth flow of the internal mobile network.

This can be effective, in fact, because of the crosstalk of satellite signals, only near this hill.Once you get past this area, there is no problem.

After the operation of the organizing committee, the self-driving vehicles present, as if they were alive, planned the route one after another, and then drove on the correct road.

Seeing that the cars were running normally, Wang Wei also heaved a sigh of relief, the race was finally back on track.

On the Dou Ya Dou live broadcast platform, netizens are a little surprised to see the operations of the surrounding staff through the screen.Just put a few devices in this way, and the vehicle is normal?It's kind of amazing.

"Teachers, what do you think of the arrangement of the organizing committee and what are the equipments for? Can you explain to us in detail?"

Keke tried to ask at this time.

"These devices, if I'm not wrong, should be some signal-shielding devices."

Regarding this point, Wang Shuang is quite clear, and said this to the netizens in the live broadcast room.

"Block the signal, why do you want to block the signal?"

Some netizens asked this question.

"Who knows, maybe it's to prevent others from secretly manipulating it?"

"You can pull it down. What is there to control in this place? Besides, it is so far away and there are so many cars, how to control it?"

Netizens in the live broadcast room were talking about it for a while.

"As for the device next to it, it should be a signal base station."

Wang Shuang pointed to another device and said.

That equipment is a fan-shaped object. Looking at the shape, it is very familiar, similar to the equipment on the signal base station.

Wang Shuang's guess should be no problem.

"No, one side is a device that shields the signal, and the other side has added a mobile base station signal tower. What is this going to do?"

"Who knows, the vehicle is running normally anyway."

The live broadcast room discussed this matter again.

It's just discussions and discussions, and there is no conclusion in the end.

Of course, there can be no conclusions.

The problem of signal crosstalk was discovered by Jiang Ming with great difficulty. Even though he could roughly know how to do it through the measures he took, the specific problem points could not be concluded without in-depth analysis.

Even Wang Shuang and Zou Ming only knew what these two devices were used for, but no one could explain why they did so.

The next game will fall into the racing stage.

Because of this level, the delay was too long.

The automatic driving system controls the vehicle and runs forward all the way.

It's just that compared to other teams, everyone is paying attention to the vehicles of Xia Keyuan.

Everyone understood at this time that this humble team, the automatic driving system, has a great advantage.

It is not easy to be able to leave many convoys behind, and to be able to pass through comfortably when all the convoys have navigation problems.

And compared to other fleets, everyone found that Xia Ke Academy's vehicles drove extremely steadily.

Unlike many vehicles, due to the problem of visual sensing frequency, there will be a short-term setback after vehicle adjustment.

In contrast, Xiake Academy's vehicles drive more smoothly.

In addition, everyone found that the vehicles of Xiake Academy have higher control accuracy.

Because the road that the convoys are driving at this time is a dirt road.Moreover, it had rained some time ago, which resulted in occasional puddles in some sections of the road.

Puddles mean potholes, mean dirt on the bodywork.

Therefore, for puddles, the general automatic driving system will try to avoid them.

However, due to the large number of puddles, it is difficult to avoid all the puddles.Passing vehicles will be more or less pressed against a part, resulting in dirty surroundings of the vehicle.

However, looking at the vehicles of the Xia Ke Academy, passing through the same location, there are only a few places around the car with mud spots, and there is no large amount of dirt, which is a bit strange.

But when everyone's eyes focused on it, they discovered the secret of Xia Keyuan's vehicles.

I saw that the vehicles of the Xia Keyuan moved in a snakeskin manner, and on the basis of ensuring the speed, they avoided the puddles every time.

This kind of operation, this kind of precision, stunned many manufacturers.

The so-called insiders look at the door, while laymen look at the excitement.This level of control is very difficult.

First of all, to achieve this kind of manipulation, the visual perception must be in place.

The established model must be fine enough so that the driving system can recognize it clearly enough.

On this clear basis, the driving system controls the vehicle and realizes micro-control, both of which are indispensable.

(End of this chapter)