Vol 6 Chapter 2844: Technical double insurance

"As you know, the placement of vehicle sensors is very particular. In order to be able to see farther, and to avoid damage and avoid obstruction of the field of view, many cars put lidar and vision lenses on the roof.

This is why we see horns, ears, or a bulge growing on the roof of many cars, which contain lidar and visual lenses. "

"There is a reason why it is placed like this. Because of the characteristics of the lidar, it must be kept perpendicular to the ground so that its detection is more accurate.

This is why it is not installed in the windshield, because the glass will block and weaken the detection of the lidar and affect the accuracy of the detection data.

Therefore, these major car companies have no choice but to add a horn to the vehicle.

Doing so can solve the problem, but it also adds a lot of problems. For example, this horn will destroy the integrity of the vehicle, thereby affecting the appearance of the vehicle. The horn of the car will greatly increase the drag coefficient of the vehicle during driving, which will affect the acceleration of the vehicle and the fuel consumption and power consumption of the vehicle. "

"As for us, in order to be able to solve this problem, we have also made a lot of efforts in this area. We have applied for more than 200 related patents in this area alone. In the end, we made the entire sensor module like this A narrow strip of only thirteen millimeters.

The entire sensor module is thirteen millimeters wide, 210 millimeters long and seventy-five millimeters thick. In it, we have integrated sensors such as lidar, fly eye lens, telephoto lens, etc., and the performance is very powerful.

In order not to affect the appearance of the vehicle, but also to reduce the drag coefficient of the vehicle, we embedded the entire sensor module on the front beam of the entire vehicle. "

"Of course, in order to allow the vehicle's front beam to accommodate the entire sensor module without any impact on the strength, thickness, and width of the front beam itself, we have worked hard in this regard, and finally developed a complete set of sensors. technical solutions.

We will add this set of technical solutions and related patent licenses to our L4 advanced autonomous driving technology solutions, and each car company can choose according to their actual needs.

Anyway, this is just a set of installation solutions, maybe the major car companies have their own better active solutions, and we are looking forward to it. "

Hearing Wu Hao's words, everyone present couldn't help laughing, and many people secretly complained. In the face of such a perfect solution, it is hard to imagine any better solution from other car companies.

And the off-the-shelf solutions are already here, so why would these car companies bother to come up with a set of their own solutions, unless they want to do something different.

Such sensor modules are independent, and each car company can choose to place several modules according to its own needs. Usually, we recommend that a car put three sensor modules, two in the front and one in the back.

As you can see, there is such a sensor module on the left and right sides of the windshield of this vehicle, and there is another one at the rear of the vehicle.

In fact, it is enough to put one high-performance sensor module like this in a car, so why do we need to put three, this is mainly for safety.

First, the two front sensor modules are placed on both sides of the front cross member of the vehicle. The purpose of this design, on the one hand, is to more accurately detect objects and obstacles ahead through the mutual folding verification of the left and right sensor module screens.

For example, if there is a vertical steel sheet or a steel wire in the front, if it is a single sensor module, it may be difficult to find because of this angle problem. And if the two sensor modules verify each other, this vertical steel sheet or steel wire can be detected.

In addition, because there are two sensor modules on the left and right, its detection angle is wider. The traditional detection angle may only be 90 degrees, while the detection angle of our two sensors can reach 160 degrees.

In this way, the detected area is wider and the blind spot is smaller, which is more conducive to the vehicle's accurate detection of the front road conditions and provides data support for the vehicle's automatic driving.

Finally, these two sensor modules can serve as backups for each other. After a single sensor module fails, the other sensor module can still work normally without affecting the normal driving of the vehicle and will not immediately exit the automatic driving mode, which can effectively guarantee the safety of the vehicle. driving safety.

If it is a single sensor module or a single lidar, once a fault occurs during the driving of the vehicle, the driver has no time to respond and take over the vehicle in time, which may cause the vehicle to be in danger.

Everyone knows that L3 level is an assisted automatic driving technology, so the driver will take over the vehicle in time. But when it comes to L4-level advanced automatic driving technology, the car owner will enable this technology after meeting the requirements, and then no longer care about the vehicle, and the vehicle will drive completely autonomously.

If the sensor fails at this time, it is very dangerous.

And we use two sensor modules on the front side, which is equivalent to installing double insurance for the vehicle. This can greatly avoid the failure of a single sensor, resulting in a dangerous emergency situation in the vehicle.

As a product owner, we need to know where we can save and where we can't. As a vehicle manufacturer, we must always put the safety of the vehicle and the safety of the occupants first, instead of just focusing on saving costs and increasing profits.

We also added a sensor module at the back of the vehicle, UU Reading www.uukanshu.com is usually at the back, car manufacturers are reluctant to install lidar, because the cost is too high, and because it is unnecessary.

So why do we insist on installing it? This is mainly for safety. For the safety of the vehicle when reversing, it is also for the safety of being able to avoid what may appear in the rear.

Among the assisted driving vehicle accidents in recent years, a considerable part of them are caused by rear-end collisions of vehicles behind.

Because of obeying the traffic laws and driving according to the rules, self-driving vehicles are often rear-ended by some illegal vehicles behind. This is of course the responsibility of the other party, but it will also seriously affect the safety of the occupants in the vehicle.

So we installed a sensor module behind the car, which can detect the road conditions behind in real time. Avoid some fast vehicles behind in time.

Moreover, it can also recognize special vehicles coming from behind, such as police cars, ambulances, fire engines, etc., and avoid them in time, which other automatic driving systems cannot do.

(end of this chapter)

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