Abstract: A roadside parking light controller is designed by using the AT89C51 single-chip microcomputer by means of timer interruption. When a automobiles stops at the side of the road, it will control its rear left parking light to produce flashing effect, warning passing vehicles, avoiding serious traffic accidents, so as to improve the safety of cars parked on the side of the road. According to the requirements of the controller system, this paper uses the Proteus software platform to carry out the relevant research, design and simulation of the hardware circuit and software program. The final simulation results show that when the switch of the roadside parking light is turned on, the parking light will have a flickering effect. Since roadside parking lights are rarely used in China and can improve automobile safety to a certain extent, they have certain application prospects and improve the overall competitive advantage of automobiles.

Key words: AT89C51 microcontroller; Roadside parking light; Controller design; Automobile safety

摘要： 利用 AT89C51 单片机采取定时器中断方式设计了一款路边停车灯控制器，汽车在路边 停车时会控制其尾部左侧停车灯产生闪烁效果，警示过往车辆，避免发生严重的交通事故， 从而提高汽车在路边停车的安全性。文章根据控制器系统的要求，利用 Proteus 软件平台对硬 件电路和软件程序进行相关的研究、设计与仿真。最终的仿真结果显示，当路边停车灯的开 关打开时，停车灯会产生闪烁的效果。由于路边停车灯在国内应用较少，且在一定程度上可 以提高汽车安全性，所以具有一定的应用前景和提高汽车的整体竞争优势。

关键词: AT89C51 单片机；路边停车灯；控制器设计；汽车安全