Fire and overheat detection
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United States of America Patent
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-
Jan 23, 1990
Grant Date -
N/A
app pub date -
Apr 15, 1988
filing date -
Apr 16, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An overheat detector comprises an optical fiber connected at one end to a light source and at the other end to a photodiode for monitoring the light level transmitted through the fiber. When the light level falls below a predetermined threshold due to melting of the fiber, an alarm signal is output. The temperature at which the alarm signal is output depends upon the material of which the light conducting part of the fibre is constructed.
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