超声测距汇编语言代码，两个探头， 40KHZ-Ultrasonic Ranging assembly language code, the two probes, 40KHZ

超声测距,外围用LM567音频解码器来锁定接受的声波频率，程序里用的是40KHZ,发送200ms，然后等待接受进行中断。里面只有程序，外围电路很简单，注意要把信号放大。-Ultrasonic ranging, external LM567 audio decoder to use to lock in acceptable sound wave frequency, the program inside using a 40KHZ, send 200ms, and then waiting fo

一个超声测距的汇编程序，里面有注解，可供大家参考。-An ultrasonic ranging compilation of procedures, which are notes available for your reference.

基于AT89S52单片机的超声测距系统毕业设计，内含源程序代码。-AT89S52 Microcontroller based graduate design of ultrasonic ranging system, containing source code.

超声振动模态分析的应用实际例子，以陶瓷圆筒为例子-Ultrasonic vibration modal analysis