基于凌阳61A的倒车雷达设计与应用

Application and Design of Reversing Radar Based on SPCE061A

乘用车存在一个后视盲区,加装倒车雷达可以弥补这一缺陷并提高泊车的安全性,但倒车雷达对障碍物的距离精度和方位的探测敏感性需要研究。首先分析了超声波倒车雷达的测距原理和技术方案,在SPCE061A单片机的三个超声波测距模组的基础上,改进了CD4052多路传感器控制技术。在凌阳SPCE061A处理机基础上进行了控制软件的二次开发,调整了中断程序的参数,改进了超声波测距程序和语音提示功能。实验结果表明,系统提高了0.35m～1.5m范围内障碍物的探测和方位的确定功能。

There is a blind area of rear mirror for any passenger car, so the reversing radar is a modification method and the improvement for the parking security, and the detecting sensitivity of distance precision and direction of the obstacle to the reversing radar is to be stud- ied. First,the principle of ultrasonic reversing radar and technical measures are analyzed. The design of ultrasonic reversing radar was im- plemented,using SPCE061A and the three ultrasonic ranging models. The SPCE061A single-chip computer was applied in the reversing radar system. Adjusting the interrupt program parameters, the distance detecting and voice warning function has been improved through the re-programming based on the API supplied by Sunplus Co. , as the experimental results,the design scheme of the distance detecting and direction within 0.35m - 1.5m was implemented and improved.