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Proceedings Paper

FFT measuring method for magneto-optical ac current measurement
Author(s): Shichuang Hu; Miaoyuan Ye; Gen Qu
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Paper Abstract

A magneto-optical effect a polarizer is used in place of the Wollaston prism. For this simplified equipment, a new measuring technique has been developed--calculating the harmonics amplitude and phase shift of a measured current by means of the frequency spectrum of the output voltage. Then the current wave can be synthesized by the known parameters. The best way to obtain the spectrum is by fast fourier transform.

Paper Details

Date Published: 1 August 1991
PDF: 5 pages
Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); doi: 10.1117/12.50083
Show Author Affiliations
Shichuang Hu, Huazhong Univ. of Science and Technology (China)
Miaoyuan Ye, Huazhong Univ. of Science and Technology (China)
Gen Qu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 1572:
International Conference on Optical Fibre Sensors in China OFS(C) '91

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