摘要
提出了一种基于AT89S51单片机的超声波测距系统的设计方案。详细分析了影响测距系统精度的主要因素,设计出了各单元电路和整体电路,重点介绍了提高测量精度的方案和具体实现电路,采用单片机技术进行控制,并给出了控制流程图。设计出的超声波测距系统精度可达毫米数量级,电路具有结构简单、操作方便、精度高、应用广泛的特点。
A plan of ultrasonic distance measurement system based on AT89S51 is derived in this paper, the main factors impact of precision are analyzed in detail and the unit circuit and complete circuit are given. The plan of improving the accuracy and specific circuit is introduced. The system＇s accuracy is reache＇d millimeters orders of magnitude. All of the component is controlle by AT89S51, and the control program flow is presented. Circuit have many advantages such as simply structure,easy to use,high accuracy and wide application.
出处
《现代电子技术》
2008年第15期137-139,共3页
Modern Electronics Technique
关键词
测距系统
AT89S51
误差分析
硬件设计
流程图
distance measurement system
AT89S51
error analysis hardware design
program flow
