汽车安全车距预警系统设计

Safety Car Distance Warning System Design

汽车数量增多和汽车的高速度使得汽车发生碰撞事故的机率大大提高,发生事故的主要原因是前后的车距太小。为此设计了汽车安全车距预警装置,运用霍尔传感器测量自身车速,通过毫米波测距雷达测量与前车的车距,由stm32单片机根据两车车距及车辆的行驶状态给出语音提示引起驾驶员的注意,使得驾驶员有充分的时间进行减速制动,从而达到有效预防汽车碰撞事故发生的目的。同时提出了低速及车距趋远情形下的虚假报警处理方案,进一步提升了该系统的实际应用价值。

The increase in the number of cars and the high speed of automobiles had greatly increased the probability of car collisions. The main cause of accidents is the small distance between the front and rear cars. Therefore, a car safe distance early warning device is designed to measure the distance between the car and its car through the millimeter wave ranging radar and hall sensor is used to measure the speed of the car itself. Stm32 single-chip microcomputer smartly can give voice alert to alert drivers to take a slow or braking action in sufficient time according to the distance between the two cars and the driving condition of the car, so as to achieve the purpose of preventing the car collision accident effectively. At the same time, a false alarm processing scheme was proposed under the conditions of low speed and distance from the vehicle, further improves the practical application value of the system.