摘要
介绍一种基于AT89S52单片机、超声波频率为200KHz的超声波测距系统,阐述超声测距系统的硬件电路构成、工作原理及软件设计方法,采用软件修正的办法克服误差随距离和被测物体的大小的变化而变化的缺点。实验表明,该测距系统具有较高的测量精度和极小的盲区。
Introduces one ultrasonic distance measuring system based on AT89S52 single-chip microcomputer and mainly describes its hardware circuit, software design method and the operating principle. The disadvantage that the measuring error has a distinct change going with the change of distance and object size is overcome by software correction. The measuring precision of distance measure system is higher indicated by the experiment and the blind field is tiny.
出处
《现代计算机》
2009年第3期198-200,共3页
Modern Computer
关键词
超声波
测距
高频
Ultrasonic
Measuring Distance
High Frequency
