非接触式超声波探测器是为提高自动导向运输车的安全性能而研制的,它是一个微机控制的超声波系统。文章不仅阐明了探测器的构造、工作原理,还讨论了软件的设计。超声波系统以它的简单、价廉而得到广泛应用,但也有不足之处。文章对影响测距精度的一些性能指标在实验的基础上作了分析。 Non-contact ultrasonic probe is to improve the safety performance of automatic guided vehicles developed, it is a microcomputer-controlled ultrasound system. The article not only clarifies the structure and working principle of the detector, but also discusses the design of the software. Ultrasound system with its simple, inexpensive and widely used, but there are also shortcomings. In this paper, some performance indexes that affect the accuracy of ranging are analyzed based on the experiment.