Meng Chung Leong, Wen Yan Lam, M. Zan, N. Arsad, A. Bakar, Mohd Hadri Hafiz Mokhtar
{"title":"Contactless Vibration Sensing and Acoustics Wave Detection Based on Laser Feedback Interferometer","authors":"Meng Chung Leong, Wen Yan Lam, M. Zan, N. Arsad, A. Bakar, Mohd Hadri Hafiz Mokhtar","doi":"10.1109/ICP46580.2020.9206494","DOIUrl":null,"url":null,"abstract":"In this paper, the use of laser feedback interferometer to detect the minute displacement of low frequency vibration from a piezo actuator and acoustics wave detection from a standard speaker are presented. The preliminary results of time domain and its corresponding FFT graphs are illustrated. The acoustics signal is further investigated by varying the distance of the speaker with the laser feedback interferometer optical path. The results show that measurement of vibration as low as 5 Hz and the detection of acoustics wave are achievable.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"17 1","pages":"91-92"},"PeriodicalIF":0.0000,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE 8th International Conference on Photonics (ICP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICP46580.2020.9206494","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
In this paper, the use of laser feedback interferometer to detect the minute displacement of low frequency vibration from a piezo actuator and acoustics wave detection from a standard speaker are presented. The preliminary results of time domain and its corresponding FFT graphs are illustrated. The acoustics signal is further investigated by varying the distance of the speaker with the laser feedback interferometer optical path. The results show that measurement of vibration as low as 5 Hz and the detection of acoustics wave are achievable.
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