Liberation Daily: Exploration of Automotive Safety Technology

With the development of automotive technology, more and more electronic assisted driving devices are being assembled on automobiles. They not only can greatly reduce the burden on drivers, make driving easier, but also can help reduce the occurrence of violations. Make driving a car safer.

Let the car "conditionally reflect"

Every second before the collision is extremely important. For this reason, automotive engineers hope that vehicles can predict more concrete information about accidents earlier and more accurately, such as: what kind of accidents the vehicle is about to encounter? From which direction will the other vehicle collide? What is the speed? The data can be obtained using radar sensor technology.

Taking the Lexus model as an example, the newly-prepared pre-collision safety system (PCS) can use microwave radar to automatically detect front obstacles and provide warnings and interventions when necessary to help drivers avoid collisions or reduce collision speeds. The adaptive radar cruise control system (ACC) adds a vehicle distance control mode based on the traditional cruise control mode, and automatically adjusts the vehicle speed to keep the preset distance with the vehicle ahead. When the current vehicle changes lanes or accelerates, the system will control the vehicle to return to the initial cruising speed. The ACC system can provide occupants with a safer and more comfortable experience while driving on high-speed roads or on long-distance driving.

Mercedes-Benz's Preventive Safety System (PRE-SAFE) quickly judges the impending danger through a radar system mounted on the front bumper and grille. When the system judges the imminent danger, the vehicle's safety belt will quickly tighten. The front seats are quickly adjusted to the optimal position, the inflatable seats are rapidly inflated, the driver and the co-pilot are fixed to the seat as much as possible to increase the distance from the dashboard, and the front row is reduced in the event of an accident. Passenger's forward movement. The enhanced brake assist system (BASPLUS) can use long-range and short-range radar to monitor. When the driver steps on the brake pedal, it can calculate the braking force necessary for full braking according to the road conditions. After a large number of tests in the driving simulator and in practice, the latest Mercedes-Benz S-Class (Model Picture Forum) and CL-Class models have begun to provide optional equipment for the BASPLUS system.

Allowing the car to have night vision

Nighttime is a period of high accidents. The reliability of the lighting system is directly related to the safety of car drivers. Some vehicles now have many different lighting features. BMW, Mercedes-Benz and other models also have curved lighting features, active curved lighting system module can track the driver's steering wheel steering, quickly turning to the side, it can make the driver can see the traditional light technology Unable to illuminate the road.

The latest Night Vision Assist System allows drivers to see early in the night traffic signs, bends, pedestrians, cars, obstacles or other dangerous things on the road that are not illuminated by low beams. Vehicles equipped with a night vision assistance system are equipped with two additional infrared headlights that can reach approximately 200 meters in front. Inside the windshield, a specially developed small infrared camera can record the driving environment in front of the vehicle, reduce the glare of the interference, improve the display brightness of other objects, and display it on the screen of the cockpit dashboard.

Let the car see its own way

The Spurhalte-Assistent system uses the camera to complete the work. It can alert the driver when the car inadvertently leaves the original lane and automatically guides the car that is in danger of sudden accident back to the original lane to avoid serious accidents. Statistics show that such accidents account for one-third of the fatal traffic accidents. The tracking assistance system can “see” the light and dark contrast of the traffic markings on the road surface and analyze it, so as to identify the lane dividing line in front of the car. At the same time, the running route of the car and the operation of the driver are also included in the monitoring. In addition, the system will only take action if the driver does not intend to let the car leave the lane. If the driver is intentionally overtaking, the tracking assistance system will not respond. The intersection aid system can "see" the front moving objects and follow them. Based on this observation process, it can even accurately predict their direction of motion.

The traffic sign recognition system will recognize traffic light signals, stop signs, priority signs and other traffic signs. During the driving process, the camera will automatically track the surrounding warning signs. Once the warning sign enters the visible range, the camera will photograph the contents of the warning sign, match, filter, and interpret the data through the database built into the recognition software system. The content is displayed on the display in the center of the dashboard. In this way, the driver only needs to know the warning content on the road ahead from the dashboard, which greatly reduces the possibility of mistakes.

With the introduction of cutting-edge electronics, driving a car will become easier and safer in the future. The safety system of the future car will be more personalized and can be matched according to the person's height, weight, gender and other parameters. Drivers, co-pilots and rear passengers can input personal information into the on-board computer before the vehicle starts. This will inflate and exhaust the airbags, the force of the seat belt retractor, and the seat belt tension limitation in the event of an accident. The elasticity of the device or the position of the steering column can be adjusted according to the actual situation, so that the traffic will be more worry-free.