System and method for opto-acoustic liquid quantity measurement and transducer therefor
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United States of America Patent
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Feb 13, 1990
Grant Date -
N/A
app pub date -
Sep 19, 1988
filing date -
Sep 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The system and method provide an electrically passive optically controlled acoustic transceiver system which measures the quantity of a liquid, such as aircraft fuel, in a tank. Pulsed electromagnetic radiation, such as light or infrared radiation, is guided through an optical fiber and impinged upon a flexible member adapted to flex when heated and transmit acoustic pulses. An optical fiber detector, is used to monitor the acoustic pulses reflected from the liquid level in a fuel tank. The system is electrically passive and does not require or use electrical power at the sensing location.
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