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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 445-448 |
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Ghorbani A, Nouri M, Salarinasab M, Abdollahpour D. Optical Pressure Sensor with Confocal Detection. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :445-448
URL: http://opsi.ir/article-1-1738-en.html
URL: http://opsi.ir/article-1-1738-en.html
1- Department of Physics, Institute for Advanced Studies in Basic Sciences, Prof. Sobouti Blvd., Zanjan
Abstract: (2099 Views)
In this paper, a new method for intensity-based optical pressure sensing with confocal detection scheme is introduced. A continuous laser beam is focused on a reflective flexible diaphragm by a microscope objective. Upon a deformation of the diaphragm due to a pressure change, the transmitted light intensity from a pinhole placed in the confocal plane, is recorded and converted to the pressure measurements by a certain procedure. Results of the pressure measurement in the range of 98.65 kPa to 103.6 kPa are reported and the procedure of the measurement is explained. In addition to simplicity of the apparatus and interpretation of the recorded signals, the method can be readily modified to operate with a required sensitivity in a desired pressure range. This can be achieved by utilizing a different microscope objective and diaphragm material.
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