基于STC89C52的汽车倒车雷达预警系统设计
Design of Safety Protection Devices for Automobile Speed Measurement and Distance

为了实现对汽车倒车雷达预警系统的设计，本文选用了STC89C52单片机和利用渡越时间检测法的超声波测距的方法，提出了汽车倒车雷达预警系统的总体设计方案。系统的硬件电路的实现主要包括单片机最小系统、超声波测距电路和显示报警电路。并根据系统的逻辑关系编写流程图并且运用C语言完成系统的软件实现。最后，测量系统精度并分析测量结果，结果表明本文具有实际的应用意义与价值。
In order to realize the design of the car reversingradar warning system, STC89C52 single-chip computer and the ultrasonic ranging method using the transit time detection method are selected finally, and the overall design scheme of the car reversingradar warning system is put forward. The hardware circuit of the system mainly includes the minimum system of single chip microcomputer, ultrasonic ranging circuit and display alarm circuit. And according to the logical relationship of the system, the flow chart is written and the software implementation of the system is completed by C language. Finally, the system accuracy is measured and the measurement results are analyzed. The results show that this system has practical application significance and value.