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Low-cost planar vibration sensor using a modified computer mouse

Wei Xia (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Lingwen Kong (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Jiahuan Zhang (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Hui Hao (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Yiping Wang (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Xiaoqi Ni (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Ming Wang (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)
Dongmei Guo (Jiangsu Key Laboratory on Opto-Electronic Technology, Department of Physics and Technology, Nanjing Normal University, Nanjing, China)

Sensor Review

ISSN: 0260-2288

Article publication date: 13 June 2019

Issue publication date: 26 July 2019

139

Abstract

Purpose

The purpose of this study aims to modify a self-mixing laser mouse as an extremely cost-effective displacement sensor to measure the mechanical oscillation of a commercial shaker and a nano-positioning stage.

Design/methodology/approach

This kind of laser mouse, mostly consisting of a pair of vertical cavity surface emitting lasers, two photodiodes and an integrated signal processing unit, is capable of directly giving the x-axis and y-axis components of the measured vibrating displacement. Based on the laser self-mixing interference, the velocity of the object is coded into the Doppler frequency shift of the feedback light, which allows accurate determination of the vibration of the object.

Findings

A commercial shaker has been used to provide standard harmonic oscillation to test the displacement sensor. Within a vibrating frequency range of 110 Hz, the experimental results show that the micrometer scale resolution has been achieved at the velocity of up to 2 m/s, which is much improved compared with the image-based optical mouse. Furthermore, the measurements of the two dimensional displacement of a nano-positioning stage are performed as well. The minimum measurable velocity limit for this sensor has been discussed in detail, and the relative measurement error can be greatly reduced by appropriate selection of the modulation frequency of the triangular injection current.

Originality/value

These results demonstrate the feasibility of this device for the industrial vibration sensing applications.

Keywords

Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC) (51775283, 51875292); Natural Science Foundation of Jiangsu Province of China (BK20161559, BK20161562); Natural Science Foundation of the Higher Education Institutions of Jiangsu Province of China (16KJB510017, 16KJB510018); China Postdoctoral Science Foundation (2017M611856).

Citation

Xia, W., Kong, L., Zhang, J., Hao, H., Wang, Y., Ni, X., Wang, M. and Guo, D. (2019), "Low-cost planar vibration sensor using a modified computer mouse", Sensor Review, Vol. 39 No. 4, pp. 567-576. https://doi.org/10.1108/SR-07-2018-0179

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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