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Vol. 164, Issue 2, February 2014, pp. 51-57

 

Bullet

 

Circuit Design and Implementation of Micro-Displacement Measurement System of Laser Self-Mixing Interference
 

Guang Ya LIU, Hongbao WANG, Jie MIN

Electronic Engineering, Hubei University of Technology, Wuhan, 430068, Hubei Province, China

E-mail: whltxz@aliyun.com, whb_dabao2007@126.com, 3904820557@qq.com

 

Received: 29 October 2013 /Accepted: 28 December 2013 /Published: 28 February 2014

Digital Sensors and Sensor Sysstems

 

Abstract: In this paper we put forward the basic structure of a micro-displacement measuring system based on the basic theory of laser feedback, and designed a hardware circuit of the system, including the LD driver and modulation circuit, photoelectric signal amplifier and filter circuit, which meet the requirements of the follow-up experimental study by theoretical analysis and Multisim simulation to the circuit.

 

Keywords: Laser feedback, Micro-displacement measurement, Hardware circuit design.

 

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