Abstract
Fiber optic displacement sensors are widely used in industry. Retro reflective fiber optic displacement sensor consists of parallel fibers with a reflector at a distance. Light is launched into the transmitting fiber which gets reflected by reflector. This reflected light is collected by the receiving fiber. The received light is function of the displacement of the reflector from the fiber end faces. This paper is targeted to obtain a robust design for the fiber optic displacement sensor (FODS) using well known Taguchi method. The design takes care of all noise parameters within constraints of manufacturing tolerances. The statistical data analysis is performed on the simulated results. The larger the better signal to noise quality characteristics is used to find the effect of control parameters in the data analysis. Taguchi analysis suggests dominant parameters, which affects the sensitivity of the FODS and causes immunity to noise. A source fiber inclination angle is chosen as an adjustment parameter. Other control parameters are used for fine tuning of the FODS design for achieving three qualities viz. best robustness, optimized sensitivity and robustness and best sensitivity.
Highlights
Retro reflective fiber optic displacement sensor consists of parallel fibers with a reflector at a distance
This paper is targeted to obtain a robust design for the fiber optic displacement sensor (FODS) using well known Taguchi method
Taguchi techniques are most known and recurrently used for quality product design. This technique is used for robust parameter design of retro reflective fiber optic displacement sensor (FODS)
Summary
Power transformers, civil structures [1] These sensors have number of unique advantages such as immunity to electromagnetic interference, small size, high temperature capability, ability to isolate the sensor head from the electronic components by very large distances and ability to multiplex number of sensors along single fiber cable [2]. The sensor consists of light source (LED), photo-detector, source fiber and receiving fiber with a reflector at a distance This sensor is well studied and number of geometries of this sensor is reported [3]. Taguchi techniques are most known and recurrently used for quality product design This technique is used for robust parameter design of retro reflective fiber optic displacement sensor (FODS)
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