Title :
A sensor powered by pulsed light (for gas density of GIS)
Author :
Yamagata, Y. ; Kumagai, T. ; Sai, Y. ; Uchida, Y. ; Imai, K.
Author_Institution :
Tokyo Electr. Power Co., Japan
Abstract :
High optical/electrical energy conversion efficiency was achieved in an optical power supply system which drives a sensor by the optical energy supplied through an optical fiber cable from a laser diode, succeeding in supplying electric power over a distance of 1 km. By matching the impedances of load and of a photodiode, while converting pulsed light into electrical signals with the photodiode and boosting with a transformer, a high optical/electrical energy conversion efficiency of 14.8% was obtained. This power supply method was applied to a sensor for measuring the gas density of extrahigh-voltage substation gas-insulated switchgear (GIS) which can display the merits of an optical-transmission sensor. The sensor section of the gas density sensor, consisting of a transistor temperature sensor and a semiconductor pressure sensor, could be driven by an optical input of 2.3 mW.<>
Keywords :
density measurement; fibre optic sensors; gas sensors; gaseous insulation; switchgear; 2.3 mW; extrahigh voltage substation GIS; gas density sensor; laser diode; optical fiber cable; optical power supply system; optical-transmission sensor; optical/electrical energy conversion efficiency; photodiode; pulsed light powered sensor; semiconductor pressure sensor; transistor temperature sensor; Drives; Energy conversion; Gas detectors; Geographic Information Systems; Optical pulses; Optical sensors; Photodiodes; Power supplies; Pulsed power supplies; Temperature sensors;
Conference_Titel :
Solid-State Sensors and Actuators, 1991. Digest of Technical Papers, TRANSDUCERS '91., 1991 International Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-87942-585-7
DOI :
10.1109/SENSOR.1991.149011
