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本文介绍一种超声波液体流量计前置预处理电路的基本原理。该电路可将两个交替发射与接收的传感器所接收的信号合用一路进行放大、滤波与自动增益控制。
This article describes a basic principle of ultrasonic liquid flow meter pre-conditioning circuit. The circuit can be two transmit and receive signals received by the sensor combined all the way to zoom, filter and automatic gain control.