Optical Reflective Gear Tooth Sensor with Application to Rotational Speed Measurement
Conference: PCIM Europe 2015 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/19/2015 - 05/20/2015 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2015
Pages: 8Language: englishTyp: PDF
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Authors:
Sun, Hui; Liu, Ji-Gou; Zhang, Quan (ChenYang Technologies GmbH & Co. KG., Germany)
Li, Xiang-Ning (University of Shanghai for Science and Technology, China)
Abstract:
An optical reflective gear tooth sensor is described in this paper. Mathematical models of optical and electrical signals are derived after theoretical analysis and calculation, and the waveforms are plotted as a reference of design by MATLAB programming. The test results show that the optical reflective gear tooth sensor with collimation LED can work well in a wide range of sensing distance, and the optical reflective sensor can detect a longer distance than Hall-effect sensor with high measuring accuracy. The developed optical reflective gear tooth sensor can be applied to various kinds of rotary speed measurement, especially where the electromagnetic interference or a wide sensing distance of sensor is required.