具有实时语音播报的超声波测距仪

Range Finder with Real-time Audio Play Based on Ultrasonic

以MSP430F149作为微控制器,使用了中心频率为40kHz的超声波传感器,通过信号转换、放大、检测来计算超声波传播时间以确定物体距离。

The paper is based on the micro controller MSP430F149.The center frequency of ultrasonic sensor is 40kHz.The instrument measures object distance by changing signal from uhrsonic to small voltage,magnifying small voltage to TTL voltage and counting transmit time between ultrasonic sending and receiving.