Design of an embedded optical fiber micro-displacement measurement system

Gang Zhang; Youping Chen; Huimin Cao

doi:10.1117/12.678101

19 May 2006 Design of an embedded optical fiber micro-displacement measurement system

Gang Zhang, Youping Chen, Huimin Cao

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 61501M (2006) https://doi.org/10.1117/12.678101
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

Design of an embedded optical fiber micro-displacement measurement system is presented. It consists of an optical fiber displacement sensor, a signal pre-processing unit and an embedded microprocessor unit of ADuC812. The displacement sensor is a reflective intensity-modulated optical fiber bundle sensor with two paths of optical signal output, so influences of light resource fluctuation and other common interferences such as external environment and fiber loss are reduced. The signal pre-processing unit consists of several functional circuits, such as optical-electrical transducer, pre-amplification unit, band-pass filter and phase sensitive detection circuit, and is used to transform the two paths of optical signals mentioned above into two paths of electrical signals. ADuC812 is an advanced embedded microprocessor module with high performance and low price. In this application, it is used to accomplish functions of two paths of signals sampling, signals dividing and signal nonlinear processing, and finally output an analog voltage in proportion with the measured displacement. By introducing the embedded microprocessor module of ADuC812, the measurement performance and intelligent extent of the micro-displacement measurement system can be improved, resulting in the wide applications in advanced manufacturing and testing.

Citation Download Citation

Gang Zhang, Youping Chen, and Huimin Cao "Design of an embedded optical fiber micro-displacement measurement system", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61501M (19 May 2006); https://doi.org/10.1117/12.678101

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KEYWORDS

Sensors

Optical fibers

Optical testing

Signal processing

Fiber optics sensors

Analog electronics

Reflectivity

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