The devices used to transmit and receive the ultrasonic sound waves in this application are 40-kHz ceramic ultrasonic transducers. The MSP430 drives the transmitter transducer with a 12-cycle burst of 40-kHz square-wave signal derived from the cr

Practical methods for measuring thermal programs for pressure transducers, electric etc.Programele are in C-Practical methods for measuring thermal programs for pressure transducers, electric etc.Programele are in C + +

主要运用超声波换能原理、超声波传感器、超声波测距技术、超声波定位原理和超声波电路接口等超声波相关的理论知识，以及单片机工作原理、接口技术和编程命令及方法等知识，经过比较论证，在诸多方案中选择一种无论从硬件还是从软件上，都可实现性能比较优且实现方法简易的性价比高的超声波测距小系统。该系统硬件部分以单片机控制电路为核心，通过基时电路向外界发射超声波，超声波遇到障碍物向相反方向反弹，超声波接收探头接收到回波，接收电路对接收信号进行放大整形，与单片机进行接口，再通过单片机进行运算，最后在-The mai

AVR单片机的650KHz发送频率的，超声波换能器代码。650KHz的超声波换能器可以实现超声波在水里超波并反射回换能器探头的作用。-AVR microcontroller 650KHz transmission frequency, ultrasonic transducers code. 650KHz ultrasonic transducer may be implemented over the ultrasonic wave in the water and reflected bac