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LED-phototransistor linear mechanical-electrical optoisolator transducer

I. M. CIURUŞ1,* , M. DIMIAN1, A. GRAUR1

Affiliation

  1. „Ştefan cel Mare” University, Str. Universitatii nr. 13, Suceava, Romania

Abstract

Mechanical-electrical optoisolator transducers are position transducers which use as a sensor, a Polaroid optocoupler specialized in converting rotation and/or translation movements into electrical signals. The used sensor is an analog device whose transfer characteristic is non-linear. In this article is presented a method of linearizing this new type sensors’s characteristic. The method is based on the analysis of the physical processes which take place within the Polaroid optocoupler. The mechanical-electrical optoisolator transducer allows the extraction of the signals out of the areas with intense electromagnetic field. Being an analog linear transducer, the signal generated by it doesn’t impose the use of a microprocessor. This thing permits to obtain some systems of checking the position of a machine-tool’s components at a low cost price.

Keywords

Linear Transducer, Polaroid optocouplor, Polaroid filters, Polarized LED.

Citation

I. M. CIURUŞ, M. DIMIAN, A. GRAUR, LED-phototransistor linear mechanical-electrical optoisolator transducer, Optoelectronics and Advanced Materials - Rapid Communications, 4, 9, September 2010, pp.1366-1374 (2010).

Submitted at: July 31, 2010

Accepted at: Sept. 15, 2010