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Rotational speed measurement through digital imaging and image processing

Wang, Yunfan and Wang, Lijuan and Yan, Yong (2017) Rotational speed measurement through digital imaging and image processing. In: 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, pp. 1-9. ISBN 978-1-5090-3597-7. E-ISBN 978-1-5090-3596-0. (doi:10.1109/I2MTC.2017.7969697)


This paper presents a rotational speed measurement system based on a low-cost imaging device with a simple marker on the rotor. Structural similarity and two-dimensional correlation algorithms are deployed to process the images. The measurement principle, structure design and performance assessment of the proposed system are presented and discussed. The effects of different markers, image processing algorithms and illumination conditions on the performance of the measurement system are quantified through a series of experimental tests on a laboratory test rig. Experimental results suggest that the system is capable of providing the maximum relative error of ±1% with normalized standard deviation less than 0.8% over a speed range from 0 to 700 RPM (Revolutions Per Minute).

Item Type: Book section
DOI/Identification number: 10.1109/I2MTC.2017.7969697
Uncontrolled keywords: rotational speed, measurement, tachometer, image processing, image similarity evaluation
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA165 Engineering instruments, meters etc. Industrial instrumentation
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: Lijuan Wang
Date Deposited: 25 Oct 2019 16:16 UTC
Last Modified: 21 Feb 2020 04:11 UTC
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