基于单片机的超声波测距系统  

Ultrasonic Measurement System Based on Microprocessor

作　　者：牛余朋[1] 成曙[1] 

机构地区：[1]第二炮兵工程学院502教研室,陕西西安710025

出　　处：《兵工自动化》2005年第4期77-79,共3页Ordnance Industry Automation

摘　　要：基于单片机的超声波测距系统,采用测量输出脉冲宽度,即发射与接收超声波的时间间隔,通过对单片机适时控制外围电路,并向外围电路提供频率振荡、数据处理和译码显示等信号。该超声波发射电路包括门控电路(RS触发器)及微分/整形电路,接收电路则由接收、放大及信号筛选、整形电路组成。This article describes a ultrasonic measurement system based on microprocessor. By measuring pulse＇s width, that is the time interval between transmitting and receiving of the ultrasonic wave, the microprocessor control the peripheral circuits, and provide all kinds of signals, including frequency surging, data managing and coding display,This ultrasonic measurement system include transmitting part which contains the gating and differential circuits, and receiving part which contains the signal magnify and filtration circuits.

关 键 词：测距系统 超声波 单片机 

分 类 号：TP274.53[自动化与计算机技术—检测技术与自动化装置]