【摘要】 利用超声波传感器实现无接触式测距。系统由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。超声波测距仪具有高集成度、响应速度快,测量准确度高(±0.02m)、性能价格比高等特点。更多还原

【Abstract】 ?The distance measurement without touching is realized by the ultrasonic sensor in this system.The system is composed of AT89C2051 single chip processor,ultrasonic transmitting circuit,receiving and magnifying circuit,data collecting circuit and displaying circuit.The ultrasonic range finder is characteristic of high integration,fast response,high precision and high ratio of performance to price.更多还原