在荷重传感器的应用中,经常把几个传感器串联起来使用。这种联接方法有一个前提条件,即几个传感器的灵敏度必须一致。灵敏度可用下式表示: S=dV/dW式中,dV为输出量的增量(mV);dW为输入量的增量(kg);S 为传感器的灵敏度(mV/kg)。由于传感器的材料、几何尺寸等不同,在相同的桥压下,每个传感器的零点输出各不相同。要使所串联的几个传感器灵敏度一致,通常是调整传感器的供桥电压,使其灵敏度一致。下面以三个传感器(分1号、2号,3号)为例介绍其调整方法。 In load cell applications, it is common to use several sensors in series. This method of coupling has the precondition that the sensitivities of several sensors must be consistent. Sensitivity can be expressed as: S = dV / dW where dV is the increment of the output (mV); dW is the increment of the input (kg); S is the sensitivity of the sensor (mV / kg). Due to the sensor’s material, geometry, etc., the zero output of each sensor varies with the same bridge pressure. To make the sensitivity of several sensors in series, it is common to adjust the bridge voltage for the sensor so that its sensitivity is consistent. The following three sensors (points 1, 2, 3) as an example to introduce its adjustment method.