Infrared intrusion detector with a plurality of infrared ray detecting elements
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United States of America Patent
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Mar 27, 1990
Grant Date -
N/A
app pub date -
Sep 23, 1988
filing date -
Sep 26, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A personal body detecting device makes it possible to determine the presence and absence of a personal body in a detecting zone by sensing infrared rays in the zone with a plurality of infrared ray detecting elements, detecting at a discriminating means a peak level and output time in connection with respective outputs of the infrared ray detecting elements, and comparing them with each other. The personal body having reached the detecting zone in any direction thereto can be reliably detected, and a highly reliable detecting operation can be realized.
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