What is the principle of intelligent driving system?

ADAS of Pacific Auto Network is an active safety technology that uses various sensors installed on the car to collect environmental data inside and outside the car at the first time, identify or detect people or things that are still or moving, so as to enable drivers to detect possible dangers in the fastest time, so as to attract attention and improve safety.

after careful study, ADAS contains many different technologies, such as ACC adaptive cruise, AEB/CMbB automatic emergency braking, TSR/TSI traffic sign recognition, BSD/BLIS blind spot detection, LCA/LCMA lane change assistance and LDW lane departure warning. Let's take a concrete look at the characteristics of each part.

lane departure warning system+lane keeping system is composed of camera, sensor and controller. The principle is to use the camera on the side of the car body or rearview mirror to sample the identification line of the current driving lane, and then get the current car's position in the lane through image processing. At this time, as long as the car deviates from the lane, the controller will send out an alarm signal, and the process takes only about .5 seconds from perception to alarm, so as to remind and wake up the driver in real time and avoid accidents.

Pre-collision system+emergency braking system detects its own speed and the distance and speed of the vehicle in front by sensors such as radar camera installed on the vehicle. At the initial stage, it will issue a warning sound to remind the driver to pay attention to the distance between vehicles. If the driver does not respond, the distance between vehicles will continue to narrow. At this time, the braking system will intervene to give a certain braking effect, thus preventing collision.

Blind spot monitoring system The driver's blind spot refers to the area that can't be seen from the left, right and inside of three rearview mirrors. I believe many drivers are deeply impressed by the blind spot, which is also one of the frequent accidents in many accidents. The blind spot detection system uses radar and sensors to detect the blind spot area behind the vehicle, and will provide warning to the driver when the vehicle approaches in the blind spot area, helping the driver to minimize the accident probability.

automatic parking system APA automatic parking system uses infrared rays or sensors to detect objects around the car. These sensors will emit signals, which will be reflected when they hit obstacles around the car body. The computer on the car will use the time it takes to receive the signals to determine the position of obstacles, and then the computer system will take over the steering wheel, and the computer will turn the wheels through the power steering system to completely pour the car into the parking space.

adaptive cruise system ACC adaptive cruise system continuously scans the road in front of the vehicle to know the speed and relative distance of the preceding vehicle, and automatically detects the speed when driving. When the distance from the preceding vehicle is getting smaller and smaller, it will adjust its own speed accordingly to keep a safe distance from the preceding vehicle and reduce the occurrence of collision accidents.

At present, the driver fatigue monitoring system mostly uses cameras to detect the driver's face to judge the degree of concentration and whether there is a sign of dozing off. In addition, the system uses the frequency of the driver's eyes to identify the safety level and provide appropriate warning or assistance. If the driver's facial expression changes less or even closes his eyes, the vehicle will alert the owner through sound and light signals to reduce accidents.

(Photo/Text/Photo: Pacific Auto Network Q&A Calling Animals)