A new capacitance sensor for online oil-monitoring  based on dielectric constant measurement

XIAO Jian-wei; YANG Ding-xin; HU Zheng; YANG Yong-min

doi:10.13873/j.1000-97872010.04.035

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A new capacitance sensor for online oil-monitoring based on dielectric constant measurement

更新时间：2025-09-11

- A new capacitance sensor for online oil-monitoring based on dielectric constant measurement
- Vol. 29, Issue 4, Pages: 102-104(2010)
- 作者机构：
  
  国防科学技术大学机电工程与自动化学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872010.04.035
  CLC： TP212
- Published：2010
- 稿件说明：
移动端阅览
[1]肖建伟,杨定新,胡政,杨拥民.基于介电常数测量的新型在线油液监测传感器[J].传感器与微系统,2010,29(04):102-104.

XIAO Jian-wei, YANG Ding-xin, HU Zheng, et al. A new capacitance sensor for online oil-monitoring based on dielectric constant measurement[J]. 2010, 29(4): 102-104.
[1]肖建伟,杨定新,胡政,杨拥民.基于介电常数测量的新型在线油液监测传感器[J].传感器与微系统,2010,29(04):102-104. DOI： 10.13873/j.1000-97872010.04.035.

XIAO Jian-wei, YANG Ding-xin, HU Zheng, et al. A new capacitance sensor for online oil-monitoring based on dielectric constant measurement[J]. 2010, 29(4): 102-104. DOI： 10.13873/j.1000-97872010.04.035.

摘要

介绍了一种基于介电常数测量的油液在线监测电容传感器

设计了微小电容检测的软硬件系统

并以此为基础开发了油液在线监测实验系统。对不同铁粉含量润滑油进行的检测实验表明:该传感器可以有效区分不同铁粉含量的润滑油液。进一步实验研究了温度、滑油压力对传感器特性的影响规律

结果表明:温度、压力与传感器电容值之间近似呈线性关系

即温度、压力对润滑油介电常数的影响近似呈线性关系

通过最小二乘拟合得到了传感器电容值随温度、压力的变化曲线

可为基于介电常数的在线油液监测提供参考。

Abstract

A capacitive sensor for online oil monitoring based on dielectric constant is introduced.The hardware and software systems is designed to detect small capacitance.On the basis of this

online oil monitoring experimental system is developed.The detection experiment on lubricants with different iron content shows that the sensor can effectively distinguish them.Experimental study on the law of the temperature and oil pressure affect on sensor characteristics shows that it is approximate to linear relationship between temperature

pressure and capacitance

that is to say

temperature and pressure affect on dielectric constant of lubricants is approximately linear.The curves of capacitance change with temperature and pressure is achieved by least-squares fitting

which can provide a reference for oil online monitoring based on dielectric constant.

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references

基于介电常数法的油液监测 [J]. 刘凯. 润滑与密封 . 2009(01)

基于电介质介电常数测量的油液在线监测技术研究 [J]. 张晓飞,杨定新,胡政,杨拥民. 传感技术学报 . 2008(12)

浅析影响电容传感器精度的因素及提高精度的措施 [J]. 郭海峰. 中国井矿盐 . 2007(02)

新型油液在线监控技术 [J]. 黎琼炜. 测控技术 . 2005(04)

电容式固态物含水率传感器的模型 [J]. 樊尚春,梁虹. 仪器仪表学报 . 2004(S1)

介电常数法评价发动机油的性能 [J]. 曹凯. 合成润滑材料 . 2004(02)

电磁学[M]. 科学出版社 , 张玉民,戚伯云编, 2000

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