基于单片机的汽车倒车提示及测速系统设计

Design of Backing Alarm and Speed-Measuring System of Automobile Based on Single-Chip Microcomputer

介绍了一种基于单片机的汽车倒车提示及测速系统,该系统采用AT89C51作为主控制器,利用超声波测距以及光电开关测速原理,实现汽车倒车提示及测速功能,并给出了系统的硬件电路及软件部分设计。实验表明,该系统具有结构简单、操作方便、成本低等特点。

This paper introduces the backing alarm and speed measuring system of automobile based on single chip microcomputer. Single chip microcomputer （SCM） AT89C51 is adopted as master controller in this system. The principle of ultrasonic distance measuring and photoelectric switch speed measuring are applied in the system to implement the backing alarm and speed measuring function of automobile. The structure system of hardware and software are designed. Experimental result showes that this system has the characteristics of simple structure, practical operation, low cost and so on.