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Remote measurement of speed using fiber optic technique

MAHFOOZUR REHMAN1,* , ANWAR HASNI ABU HASSAN1, D AMIR ABU_AL_AISH1

Affiliation

  1. School of Electric and Electronics Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, P.Pinang, Malaysia

Abstract

A simple non-contact type technique is presented for the remote as well as precise and accurate measurement of speed in the presence of axial and radial motions of the rotating members. Fiber optic system, based on intensity modulation is designed in such a way that radial and axial motions do not hamper the accuracy as well as the precision of measurement, with the passage of time. LED with stable light output is used to transmit light through optical fiber and reflected light from a properly designed reflecting plate, attached with the axle of the motor, is transmitted to a distant place (20m)through optical fiber to the optical detector. The output of the detector is used, through electronic circuits and microcontroller, to display the speed with high degree of accuracy and precision. It is used for the remote measurement of speed with a precision of 1/90 of a revolution..

Keywords

: Light intensity modulation Remote measurement; Speed measurement; Optical fiber; Microcontroller applications; Precision measurement..

Submitted at: May 18, 2011
Accepted at: Sept. 15, 2011

Citation

MAHFOOZUR REHMAN, ANWAR HASNI ABU HASSAN, D AMIR ABU_AL_AISH, Remote measurement of speed using fiber optic technique, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 9, pp. 1118-1121 (2011)