摘要
微电脑超声测距仪由AT89C2051单片机、超声波发射电路、超声波接收放大电路、环境温度采集电路及显示电路组成。该测距仪具有集成度高、反应速度快 ,测量精度高、性能价格比高等特点。文中主要介绍了脉冲回波法的超声空气测距原理及其系统构成。
The distance measurement without touching is realized by using the sensor ultrasonic in this sysˉtem.The system is composed of AT89C2051single chip,ultrasonic transmit circuit,receive and magnify circuit,data collection circuit and display circuit.The ultrasonic range finder is characteristic of high intergration,willˉing,high precision and high ratio of performance to price.
出处
《国外电子元器件》
2005年第1期65-67,共3页
International Electronic Elements
关键词
单片机
超声波
测距
Monolithic Processors
Ultrasonic Waves
Distance Measurement
