文献类型：期刊文献

英文题名：A Novel Multichannel Inductive Wear Debris Sensor Based on Time Division Multiplexing

作者：Wu, Sen[1];Liu, Zhijian[1];Yu, Kezhen[1];Fan, Zixiao[1];Yuan, Ziyi[1];Sui, Zhuohang[1];Yin, Yi[1];Pan, Xinxiang[1,2]

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

年份：2021

卷号：21

期号：9

起止页码：11131

外文期刊名：IEEE SENSORS JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000638432800088)、、EI(收录号：20211110073238)、Scopus(收录号：2-s2.0-85102240697)、WOS

基金：This work was supported in part by the National Key Research and Development Program of China under Grant 2017YFC1404603, in part by the National Natural Science Foundation of China under Grant 51909019 and Grant 51979045, in part by the Fundamental Research Funds for the Central Universities under Grant 3132019336, and in part by the Innovative Researcher Training Projects of Dalian Maritime University under Grant CXXM2019BS010.

语种：英文

外文关键词：Sensors; Sensitivity; Synchronization; Throughput; Sensor systems; Signal synthesis; Time division multiplexing; Time division multiplexing; multichannel inductive sensor; signal synthesis; synchronized sampling; wear debris

外文摘要：Inductive wear debris sensor has been proved to be an effective device for lubricant oil condition monitoring and fault diagnosis. However, the narrow internal diameter of current sensing coil, designed for high sensitivity, limits the oil throughput. To improve the throughput without sacrificing the sensitivity, a novel multichannel wear debris detection method based on time division multiplexing is presented in this work. Only one excitation signal is used to excite multiple sensing coils. Then, the signals from multiple sensing coils are combined with a serials of square waves separately, which are self-designed specially. As a result, the peak waveforms are lifted in different timeslots by the high-level voltages in squares waves. After that, the peaks of the signals are cut out and combined into one output signal. Then, we used synchronized sampling method to record the peak values of the output signal. The signals for all sensing channels are finally extracted from the recorded peak values. To validate the feasibility of the proposed method, we designed a ten-channel sensor system using time division multiplexing. Through the pseudo-dynamic and dynamic test, it is proved that the sensor could detect wear debris in different channels simultaneously and independently without sacrificing the sensitivity. In addition, the proposed method has the potential to integrate more channels into one system, which would contribute to high throughput real time lubricant oil detection.