With the development of automatic vehicle driving technology, the future of the car will gradually get rid Sensor of the dependence on manual operation. When we will be entrusted to the security after the computer, once the car fails, the system can make a timely response? This may be a matter of concern to everyone.
Can we design an autopilot that can prevent malfunctions? The answer is no, after all, any solution can not be foolproof. Therefore, the engineers can only be second best: for the automatic driving car brakes, steering, sensing and computer chip development standby system. To do this, the simplest idea is to equip the vehicle with a secondary system so that the vehicle can safely stop Suction Control Valve while the device is experiencing a major failure. However, the two systems mean more cost, so in order to control costs, the supplier chooses to implement multiple functions simultaneously through a component.
Bosch has released an electric power steering system this year, the traditional electric power steering system has only one transmission device, and this system is equipped with two drives. Brakes and steering, the electronic brake booster is mainly used to replace electric vehicles and hybrid cars on the hydraulic brake booster, but iBooster can also automatically drive the vehicle stability control system failure to take emergency braking measures.
Automatically driving a car must be able to set a certain amount of reaction time to let you operate the vehicle. During this time, such as 10 seconds, the car must be able to stop. In the standby steering system, Bosch this year, released a electric power steering system, the traditional electric power steering system has only one transmission device, and this system is equipped with two drives. Each drive can Fuel Rail Pressure Sensor provide half of the thrust required for normal operation of the steering system. If the first drive fails, you can still get 50% steering pressure. So that you can safely stop the car side.
Control systems and sensors, these are the hardware level, if the autopilot car 'brain' - electronic control system failure, how should we do? The airbag control unit can be used as another function to act as a backup for the overall operation of the vehicle. Software and programs tend to be bug, in the software preparation process, you can use multiple teams at the same time, this can reduce the probability of failure. Because the same bug does not appear in the different packages. There should be a backup power supply in the vehicle to prevent the main battery from malfunctioning. Of course, this is not a big problem for vehicles equipped with an automatic start fuel metering valve and stop system. The batteries on these vehicles can be used to regenerate the braking system to store electricity, emergency time, can provide power for the vehicle.
Finally, as an automatic vehicle to obtain the source of external information, the sensor also need to have a backup system. At present, in order to better detect obstacles on the road, anti-collision system in the use of radar at the same time, also used the camera. In the future, lasers will also be added to the ranks of in-vehicle sensors - to ensure the accuracy of obstacle detection in inclement weather conditions. From the point Pressure Sensor of view of cost and safety, it is necessary to establish industry standards for standby safety systems. However, given that the current car manufacturers are still trying different ways, it is not realistic to set standards now.
The efforts of the continent, Bosch and other suppliers in the standby security system have been supported by the US federal level. US Department of Transportation called for unmanned vehicles should be equipped Speed Sensor with such a system. From the point of view of cost and safety, it is necessary to establish industry standards for standby safety systems. However, given that the current car manufacturers are still trying different ways, it is not realistic to set standards now.