介绍了用电流法进行液压油液污染度在线监测的原理, 并进行了实验研究, 在此基础上, 给出了基于MCS- 51 单片机C- V 传感器和温度传感器的油液污染度在线监测硬件系统。 关键词 油液污染度 C- V 传感器 电流法 Abstract The Galvanomet ry method fo r hydraulic o il contam inat ion on2line monito ring is int roduced, then the experiment result s are given, and finally the hydraulic o il on2line monito ring system based on MCS- 51 single2 ch ip computer, C- V t ransducer and temperature t ransducer is p resented1 Key words Hydraulic o il contam inat ion C- V t ransducer Galvanomet ry method