抑制气敏元件零点漂移的实用电路

Utility Circuit to Restrict Zero Drift of Gas Sensors

一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。该电路适用于起始阻值漂移，而灵敏度基本不变的气敏元件，可大大提高此类元件的稳定性与准确性。

The design idea, principle scheme and executive result for restricting zero drift of gas sensors by means of closed loop control circuit are reported. This circuit can greatly enhance stability and accuracy of gas sensors which have start resistance drift but basically constant sensitivity.