一种微机测试系统线性测量电路中的噪声抵消方法

A Noise Canceling Method Suitable for Microprocessor Based Detecting Instrument

文中介绍了一个适用于微机检测系统的应用噪声抵消方法,消除线性测量电路中干扰的方法。提出利用线性电路中信号传播的特点,通过增加参考支路测取用于噪声抵消的参考信号。并以电位器式传感器测量电路为例说明了这个方法的应用。

A noise canceling method used in line measure circuit is introduced. According to the feature of signal traveling in a line circuit,by adding a reference branch,a signal relative to the noise in the circuit can be measured. It can be used to abate the error in the detected useful signal. The application of the method is illustrated with a potentiometer sensor measure circuit.