CAJ | 학술논문

汽车倒车防撞预警系统可以有效降低汽车倒车时发生刮擦碰撞事故的几率。该系统以AT89S52微处理器为主控制器，采用HC-SR04超声波测距传感器实现倒车时后方空间的测距，在主控单元设计和测距模块设计的基础上，进行了数据通信电路设计，并设计了软件系统，最后进行了测试实验。经过实验数据分析，系统探测距离范围在2～400 cm，测距精度达到3 mm。结果表明：该系统测距范围较大，测距精度不会造成对汽车的损害，能够满足汽车在狭小空间内的倒车预警要求。
기차도차방당예경계통가이유효강저기차도차시발생괄찰팽당사고적궤솔。해계통이AT89S52미처리기위주공제기，채용HC-SR04초성파측거전감기실현도차시후방공간적측거，재주공단원설계화측거모괴설계적기출상，진행료수거통신전로설계，병설계료연건계통，최후진행료측시실험。경과실험수거분석，계통탐측거리범위재2～400 cm，측거정도체도3 mm。결과표명：해계통측거범위교대，측거정도불회조성대기차적손해，능구만족기차재협소공간내적도차예경요구。
In order to reduce the car scraping collision accidents caused by bad“rear view”when reversing,a car reverse anti-collision warning system is designed.This system takes AT89S52 single chip as the main control unit, and it adopts the HC-SR04 ultrasonic ranging module to realize the non-contact distance measurement.On the ba-sis of matching the hardware,we designed the circuit and software,and carried out the test experiment,analyzed the ranging error.This system detection range can be 2~400 cm,ranging accuracy is up to 3 mm,and it can sat-isfy the requirement of the early warning of a car when reversing in the narrow space.