文献类型：期刊文献

英文题名：Multichannel Inductive Sensor Based on Phase Division Multiplexing for Wear Debris Detection

作者：Wu, Sen[1];Liu, Zhijian[1];Yuan, Haichao[1];Yu, Kezhen[1];Gao, Yuefeng[1];Liu, Liankun[1];Pan, Xinxiang[1,2]

机构：[1]Dalian Maritime Univ, Coll Marine Engn, Dalian 116026, Peoples R China;[2]Guangdong Ocean Univ, Coll Nav, Zhanjiang 524088, Peoples R China

年份：2019

卷号：10

期号：4

外文期刊名：MICROMACHINES

收录：SCI-EXPANDED(收录号：WOS:000467772100032)、、EI(收录号：20192106964619)、Scopus(收录号：2-s2.0-85065906172)、WOS

基金：This work was supported by National Key Research and Development Program of China (2017YFC1404603), and the Fundamental Research Funds for the Central Universities (3132019189, 3132016337) National Natural Science Foundation of China (51479020).

语种：英文

外文关键词：inductive sensor; multichannel; phase division multiplexing; synchronized sampling; wear debris; microfluidics

外文摘要：Inductive wear debris sensor has been widely used in real time machine lubricant oil condition monitoring and fault forecasting. However, the small sensing zone, which is designed for high sensitivity, of the existing sensors leads to low throughput. In order to improve the throughput, a novel multichannel wear debris sensor that is based on phase division multiplexing is presented. By introducing the phase shift circuit into the system, multiple sensing coils could work at different initial phases. Multiple signals of sensing coils could be combined into one output without information loss. Synchronized sampling is used for data recording, and output signals of multiple sensing coils are extracted from the recorded data. A four-channel wear debris sensor system was designed to demonstrate our method. Subsequently, crosstalk analysis, pseudo-dynamic testing and dynamic testing were conducted to check the sensing system. Results show that signals of four sensing coils could be simultaneously detected and the detection limit for ferrous wear debris is 33 m. Using the presented method, real time wear debris detection in multiple channels could be achieved without increasing the number of excitation source and data acquisition equipment.