道路自动划线车单片机控制系统设计

摘要

At present,the job for highway line marking is mostly done manually with trolley,in view of the lower automation level of the line marking vehicle;a design scheme of automatic road line marking system based on single chip machine (SCM) is put forward. In this system,STC89C52 is adopted as the core controller,and the output of timing sequence square wave signal by the I/O port of SCM is used as the control signal to drive DC motor. The temperature of the coating is collected through DS18B20 temperature sensor for controlling the heating process of the coating. By using ultrasonic measurement technology,the distance of marking is measured;and the relevant information of the marking process is displayed on LCD panel. The hardware platform of control system is built,and the related software program is also designed.The results of practical tests verify the correctness and feasibility of the control system. It realizes the automatic operation control of the line marking vehicle,the automatic heating of the coating,the selection of line types, and the display of coating temperature and marking distance. It improves the automation level of road line marking vehicle.%针对目前公路划线工作多由人工手推小车来完成、划线车的自动化水平较低的情况,提出了一种基于单片机控制的道路自动划线车系统设计方案.系统以STC89C52单片机作为核心控制器,单片机I/O口输出的时序方波作为驱动直流电机的控制信号;通过DS18B20温度传感器采集涂料的温度,控制涂料的加热过程;采用超声波测量技术对划线距离进行测量;使用液晶屏显示划线的相关信息,搭建了控制系统的硬件平台,并设计了相应的软件程序.实测结果验证了该控制系统的正确性及可行性.系统可以实现划线车的自动运行控制、涂料自动加热、划线类型选择、涂料温度和划线距离显示等功能,提升了道路划线车的自动化水平.