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M. YASIN1,* , M. ZULKARNAEN1, SAMIAN1, A. H. ZAIDAN1, Y. G. Y. YHUWANA1, H. TRILAKSANA1, S. W. HARUN1,2
- Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia
- Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
A low cost and simple vibration sensor with tunable signals is proposed and demonstrated based on the principle of extrinsic reflective intensity modulation of displacement measurement for monitoring the heart beat.The front slope of the displacement sensor has a sensitivity of 0.44 mV/μm and linearity of 88% within a measurement range between 0 and 100 μm, while for the back slope, it shows a sensitivity of 0.06 mV/μm and linearity of 97% within a range from 150 μm to 750 μm. By placing the diaphragm of the concave surface loudspeaker within the linear range (in the back slope) from the probe, the vibration frequency of the object can be measured with an error percentage of less than 0.2%. The graphs of three various inputs against outputs frequency in sine, square, and triangle waveform show very high linearity up to 99%. Slope for tunable signals (e.g. sine, square and triangle frequency range) is obtained at 0.98 for all waveforms. Effortlessness, long-haul security, low power utilization, wide frequency ranges, lower noise, toughness, linearity and light weight make it is a promising candidate in contrast to other well-set up strategies for vibration frequency detection..
Fiber optic, Fiber optic vibration sensor, Bundled probe and tunable signals.
Submitted at: Feb. 1, 2019
Accepted at: Oct. 9, 2019
M. YASIN, M. ZULKARNAEN, SAMIAN, A. H. ZAIDAN, Y. G. Y. YHUWANA, H. TRILAKSANA, S. W. HARUN, Vibration sensor with tunable signals using bundled fiber probe, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 9-10, pp. 558-562 (2019)
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