When using pulse counting method, the precision of pressure-measuring with vibrating-wire sensor is influenced by the precision of pulse counter, circuit noise, temperature compensation, etc.
应用振弦式传感器并基于脉冲计数法进行压力测量可达测量精度受脉冲计数精度、电路噪声及温度补偿等多重因素影响。
Pulse signal of proportional amplifier is sent to counter after reduced noise by window voltage comparer.
经比例放大器放大后的脉冲信号经窗口电压比较放大器消除干扰给计数器。
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