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目前通用的无创血压测量仪都是沿用柯氏音原理，包括以下几个主要部分：气泵、气阀、袖带、压力传感器、模拟放大电路、单片机。工作原理框图如下：启动气泵泵气，这时的气阀处于关闭状态。压力传感器与气袖相通，能把压力转变为电信号。当压力传感器感知充气到达所要求值，单
The current universal non-invasive blood pressure measurement instrument follows the Korotkoff sound principle and includes the following main parts: air pump, air valve, cuff, pressure sensor, analog amplification circuit, and single-chip microcomputer. The block diagram of the operating principle is as follows: The air pump pump is started and the air valve is closed. The pressure sensor communicates with the air sleeve and can convert the pressure into electrical signals. When the pressure sensor senses the inflation reaches the required value, the single