论文部分内容阅读
介绍了超声传感器的测距原理、传感器套筒的设计方法和传感器阵列的布置方案 ,并设计了以单片机为控制核心的硬件和软件。超声传感器采用了扫描触发工作方式 ,既避免了相互间的交叉干扰 ,又提高了检测的实时性。实验表明 ,该系统的测量范围为前方0 .39～ 10 .3m ,测量范围边线的夹角为 76°。在测量范围内可测障碍物的最小尺寸为 5mm ,测距精度的相对误差小于 1%。本文最后指出了该系统在汽车夜间行驶、安全避撞和辅助倒车中的应用前景
The principle of distance measurement of ultrasonic sensor, the design method of sensor sleeve and the arrangement of sensor array are introduced. The hardware and software with the single chip microcomputer as the control core are designed. Ultrasonic sensors using a scan trigger work, both to avoid cross-interference between each other, but also improve the real-time detection. Experiments show that the measurement range of the system is 0.39 ~ 10 .3m in the front, and the included angle of the measurement line is 76 °. The minimum size of measurable obstacles in the measuring range is 5mm, and the relative error of ranging accuracy is less than 1%. Finally, the paper points out the application prospect of this system in driving at night, collision avoidance and assist reversing