METHOD AND SYSTEM TO DETECT HUMANS OR ANIMALS WITHIN CONFINED SPACES WITH A LOW RATE OF FALSE ALARMS
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United States of America Patent
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Issued Date -
Sep 4, 2008
app pub date -
Mar 2, 2007
filing date -
Mar 2, 2007
priority date (Note) -
Abandoned
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Abstract
The present disclosure describes a detection system and methods for detecting a presence of a person or animal within a confined space with a low false alarm rate. The detection system may include a chemical detector to determine whether respiratory gas concentrations within the confined space exceed a predetermined concentration threshold. The detection system may further include an accelerometer-controlled, range-controlled radar unit to detect movement within the confined space during times in which acceleration of the confined space is less than a predetermined acceleration threshold. In this manner, a measured respiratory gas concentration that initially indicates a presence of a person or animal within the confined space may be confirmed by motion detection.
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