A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil

Zhang, Hongpeng; Shi, Haotian; Li, Wei; Ma, Laihao; Zhao, Xupeng; Xu, Zhiwei; Wang, Chenyong; Xie, Yucai; Zhang, Yuwei

doi:10.3390/mi12020150

Open AccessArticle

A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil

by

Hongpeng Zhang

,

Haotian Shi

^*

,

Wei Li

,

Laihao Ma

,

Xupeng Zhao

,

Zhiwei Xu

,

Chenyong Wang

,

Yucai Xie

and

Yuwei Zhang

Marine Engineering College, Dalian Maritime University, Dalian 116026, China

^*

Author to whom correspondence should be addressed.

Micromachines 2021, 12(2), 150; https://doi.org/10.3390/mi12020150

Submission received: 30 December 2020 / Revised: 1 February 2021 / Accepted: 1 February 2021 / Published: 3 February 2021

(This article belongs to the Special Issue MEMS/NEMS Sensors: Fabrication and Application, Volume III)

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Abstract

Hydraulic oil is the key medium for the normal operation of hydraulic machinery, which carries various wear debris. The information reflected by the wear debris can be used to predict the early failure of equipment and achieve predictive maintenance. In order to realize the real-time condition monitoring of hydraulic oil, an impedance debris sensor that can detect inductance and resistance parameters is designed and studied in this paper. The material and size of wear debris can be discriminated based on inductance-resistance detection method. Silicon steel strips and two rectangular channels are designed in the sensor. The silicon steel strips are used to enhance the magnetic field strength, and the double rectangular detection channels can make full use of the magnetic field distribution region, thereby improving the detection sensitivity and throughput of the sensor. The comparison experiment shows that the coils in series are more suitable for the monitoring of wear debris. By comparing and analyzing the direction and the presence or absence of the signal pulses, the debris sensor can detect and distinguish 46 µm iron particles and 110 µm copper particles. This impedance detection method provides a new technical support for the high-precision distinguishing measurement of metal debris. The sensor can not only be used for oil detection in the laboratory, but also can be made into portable oil detection device for machinery health monitoring.

Keywords: condition monitoring; metal debris; impedance micro-sensor; hydraulic oil

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MDPI and ACS Style

Zhang, H.; Shi, H.; Li, W.; Ma, L.; Zhao, X.; Xu, Z.; Wang, C.; Xie, Y.; Zhang, Y. A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil. Micromachines 2021, 12, 150. https://doi.org/10.3390/mi12020150

AMA Style

Zhang H, Shi H, Li W, Ma L, Zhao X, Xu Z, Wang C, Xie Y, Zhang Y. A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil. Micromachines. 2021; 12(2):150. https://doi.org/10.3390/mi12020150

Chicago/Turabian Style

Zhang, Hongpeng, Haotian Shi, Wei Li, Laihao Ma, Xupeng Zhao, Zhiwei Xu, Chenyong Wang, Yucai Xie, and Yuwei Zhang. 2021. "A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil" Micromachines 12, no. 2: 150. https://doi.org/10.3390/mi12020150

APA Style

Zhang, H., Shi, H., Li, W., Ma, L., Zhao, X., Xu, Z., Wang, C., Xie, Y., & Zhang, Y. (2021). A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil. Micromachines, 12(2), 150. https://doi.org/10.3390/mi12020150

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A Novel Impedance Micro-Sensor for Metal Debris Monitoring of Hydraulic Oil

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