A bus driving on a mountain road may have a bus that is loaded with ESP electronic stability control system just because the road surface is slippery or it is possible to escape a small obstacle in the road. In the case of the same situation, the tendency of the car to roll over can be detected in time according to the state of contact between each wheel and the ground, and transmission of reduced torque can be transmitted to a certain wheel in time or a wheel can be made in time. Move to ensure normal driving of the vehicle. This type of device, which adjusts wheel power distribution and brake force distribution to achieve stable vehicle travel, has started to spread from passenger cars to commercial vehicles and is gradually becoming standard on some high-end passenger cars in Europe.

The data provided by the Ministry of Public Security shows that although there has been no significant change in the total number of road traffic deaths during the rapid growth of the number of motor vehicles in China in recent years, serious accidents caused by vehicles have occurred frequently. In order to provide maximum driving safety, in addition to the strict control of the human factors causing the accident, the application of various automotive intelligence-related technologies may be the best barrier to eliminate heavy traffic accidents.

The most common traffic accident in a car may be the rear-end and rear-end collision. If a distance warning system and an active collision avoidance system are installed on the vehicle and the safety distance between the driver's vehicle and the preceding vehicle is lower than the set value, a warning and warning ring will be issued on the front windshield; if the driver still Without any safety measures, this system will take the initiative to brake. It is worth noting that the above distance detection systems have been detected by radar sensors and have increased the detection of GPS satellite positioning systems and wireless networks. The latest technology shows that if the drivers in front and rear cars both carry smart phones with GPS navigation and are all on, the information exchanged between the vehicle and mobile phone can also achieve multiple data exchange functions.

Automotive safety experts point out that about 50% of auto traffic accidents are caused by cars deviating from normal driving lanes. Another smart security technology common in high-end automobiles in recent years is the lane departure warning system. The system uses a camera to monitor the position of the car between the lane markings. When the driver is not aware of the direction of the vehicle and is off the original lane, the system can alert the driver by more than 0.5 seconds before leaving the lane. Time, and help the driver to take the initiative to correct the direction, thereby greatly reducing the collision caused by lane departures. A similar technology, the infrared lateral warning system, can help warn the driver to pay attention to the vehicles in the side dead zone when changing lanes. If the warning system detects a vehicle entering the blind zone, it will be A bright icon appears on the side-view mirror and blinks at the relevant position in the car, providing a visual alert to the driver. For many Chinese drivers who only look at the exterior mirrors and do not look back when they are changing lanes, the practicality of the technology is self-evident.

In recent years, a number of automotive manufacturers have launched an exterior vehicle identification system that integrates GPS, exterior cameras, and radar detection systems. It can automatically identify traffic lights, traffic signs, detect obstacles on the road, and know the traffic flow and congestion of local roads, so that drivers can choose better routes, avoid obstacles, and follow traffic instructions. Driving. Another recently developed multi-application communication platform for automobiles combines remote information technology based on location-based services and network security to achieve complete interconnection between vehicles and vehicles, which is helpful for large-scale implementation of safer road traffic. . The platform can detect traffic jams or risks that may occur before the eyes of the average person detect. The driver can receive early warning information from the car even when it is blocked by the truck or near the corner. The platform can also be used for emergency vehicles. And traffic jams or traffic lights alert you so the driver can adjust speed and optimize driving.

In fact, compared to various smart security technologies that are frequently used on passenger cars, various types of passenger vehicles based on people-carrying vehicles have more intelligent security technology requirements. For example, the CAN bus technology of various subsystems in the automobile is integrated, and the assisted driving system based on radar, ultrasonic, far infrared, camera, tire pressure monitoring, and other detection and sensing equipment can be used. Calculate and issue instructions quickly when conditions are met to coordinate the adjustment of the body, including the engine, transmission, steering mechanism, suspension, until the power and movement of the wheel, so as to ensure traffic safety, avoid collisions, crashes, rollovers and other types of traffic accidents happened.

The general automobile intelligent security technology based on the active safety and passive safety of the car has gradually been popularized and accepted by the car users. At present, some developed countries have generally adopted pedestrian collision avoidance systems and intelligent safety technologies that avoid rear-end head restraints that cause cervical injuries. Among them, the sensor in the pedestrian collision avoidance system is a combination of cameras in the laser radar. Although the laser radar can only detect vehicles and obstacles, it can use image recognition to detect pedestrians by adding cameras. At the same time, the cost of the sensor used in this new type of pedestrian collision avoidance system is lower than that of using a combination of millimeter-wave radar and camera to detect pedestrians.

In addition, domestic manufacturers have a lot of work to do on the safety protection technology of electric vehicles and vehicle system safety after collision. For example, in the frontal crash test of the EuroNCAP crash test, a well-known foreign model discovered that its main harness was easily damaged, resulting in interruption of the power supply, and the seatbelt pretensioner could not work. The manufacturer immediately improved by adding wire harness protection materials. However, during the retesting, the harness was still damaged in the protected state, indicating that the protective material used was not suitable. This led to the company’s recall of vehicles that had been sold before the real disaster was avoided.