带红外通讯接口的超声波测距仪

介绍一种超声波测距仪,它具有精确测量、显示和数据存储功能,并具有红外通信接口,可以将测量数据传输到PC机保存和分析。分析了空气中超声波测距原理,提出了通过温度测量修正超声波传播速度,提高空气中测量精度的方法。在此基础上提出了一种基于单片机的带红外通讯接口的超声波测距仪的设计,设计了超声波发射和接收电路、测温电路、存储电路和显示电路。设计了一种符合IrDA标准的红外通讯接口电路。编写了测距仪的相关程序,并用VB编写了PC机接口程序。

Ultrasonic Distance Measurement Instrument with Infrared Communication Interface

An ultrasonic distance measurement instrument with infrared communication interface was introduced,which can measure accurately and display distance,memory data,and communicate with PC.The principle of ultrasonic measuring distance in the air was analyzed.A method of improving the measurement precision by correcting transmission speed with inspecting temperature was put forward.An ultrasonic distance measurement instrument based on single chip,with infrared communication interface was designed.Introduced the circuits of emitting and receiving ultrasonic wave,the temperature measuring circuit,memory circuit and displaying circuit.It introduced an infrared communication interface circuit based on IrDA standard.The program of the measurement instrument was designed.The communication program of PC was also designed in VB.