Vehicle compartment occupancy detection system
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United States of America Patent
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Jul 13, 2004
Issued Date -
N/A
app pub date -
Dec 10, 2002
filing date -
Sep 26, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system is provided for detecting the presence of a human in a compartment of a vehicle that comprises a pyroelectric sensor and a control coupled to the pyroelectric sensor. The pyroelectric sensor comprises a first sensing element and a second sensing element. The first sensing element is arranged in an opposed electrical connection with respect to the second sensing element whereby infrared radiation from a human moving within the compartment is selectively detected by one of the first sensing element and the second sensing element, thereby producing an output signal of the pyroelectric sensor. This output signal is received by the control, and the control generates a control signal indicative of detection of a human within the compartment.
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