SENSITIVITY ADJUSTABLE INTRUSION DETECTING SYSTEM
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United States of America Patent
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Issued Date -
Dec 6, 2007
app pub date -
Jun 5, 2007
filing date -
Jun 6, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
To provide a sensitivity adjustable intrusion detecting system capable of detecting the presence of a person assuredly even under the environment where the object such as a person is difficult to be detected, thereby avoiding an erroneous operation, the sensitivity adjustable intrusion detecting system is so designed that since the detecting sensitivity of the main detecting unit 1 is altered in response to detection by the auxiliary detecting unit 2 and when such detecting sensitivity of the main detecting unit is so increased at the time the necessity to detect the presence or absence of the human body H entering in one of the main detection areas encompassed within the supervised sector, the detecting sensitivity of the main detecting unit is increased to allow the human body to be assuredly detected under the environment where the human body is difficult to be detected, thereby avoiding an erroneous operation.
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