The following is a theoretical and experimental study of an opto-pneumatic detector (OPD) used in an opto-pneumatic interface. This interface is capable of changing an optical signal into a pneumatic one, that can be amplified and then applied to pneumatic power stages. The opto-pneumatic interface offers the greatest promise in the automation of installations located under fire and explosive-hazardous conditions and under conditions where there are electromagnetic or radiation field actions, whereby electrical communication channel application is undesirable or impossible, and where pneumatic channels do not provide the required speed of response. The OPD is made up of a cell where an infrared light signal cuts into a black-body, increases its temperature, and generates a pressure signal in the chamber. The work has been carried out using different absorption body thickness, gas chamber volumes, different optical signal frequencies, and different fluid loads of the OPD. Following this, a mathematical model for numerical computation has been elaborated. The theoretical results were compared with the experimental results. [S0022-0434(00)00101-5]
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March 2000
Technical Papers
Theoretical and Experimental Investigations of an Opto-Pneumatic Detector
G. Belforte,
G. Belforte
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
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T. Raparelli,
T. Raparelli
Department of Energetics, Universita` di L’Aquila, 67040 Roio Poggio, L’ Aquila, Italy
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V. Viktorov,
V. Viktorov
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
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G. Eula,
G. Eula
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
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A. Ivanov
A. Ivanov
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
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G. Belforte
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
T. Raparelli
Department of Energetics, Universita` di L’Aquila, 67040 Roio Poggio, L’ Aquila, Italy
V. Viktorov
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
G. Eula
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
A. Ivanov
Department of Mechanics, Politecnico di Torino, C.so Duca degli Abruzzi, 24 10129 Torino, Italy
Contributed by the Dynamic Systems and Control Division for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the Dynamic Systems and Control Division June 25, 1996. Associate Technical Editor: R. S. Chandran
J. Dyn. Sys., Meas., Control. Mar 2000, 122(1): 168-173 (6 pages)
Published Online: June 25, 1996
Article history
Received:
June 25, 1996
Citation
Belforte, G., Raparelli, T., Viktorov , V., Eula , G., and Ivanov, A. (June 25, 1996). "Theoretical and Experimental Investigations of an Opto-Pneumatic Detector ." ASME. J. Dyn. Sys., Meas., Control. March 2000; 122(1): 168–173. https://doi.org/10.1115/1.482438
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