9 September 2002 Measuring thread system using a laser fiber sensor
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This paper introduces a non-contact measuring system —measuring thread system using laser fiber sensor. It can solve some problems of the traditional measuring methods, such as complicated technical process, long re-testing periods, waste workpiece. A low noise amplifier used to match the photo-electronic detecting element due to the weak signal is applied in this system. Furthermore, it presents a new measuring system with phase-sensitive detecting circuit controlled by computer program, an interface circuit of microcomputer, laser fiber sensor system and digital processing system, the system based on the above elements has high resolution and sensitivity, the measuring errors ?20 ?m.
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Dong Lu, Dong Lu, Zhihang Lu, Zhihang Lu, Dawei Feng, Dawei Feng, } "Measuring thread system using a laser fiber sensor", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.481997; https://doi.org/10.1117/12.481997

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