Moving object detection apparatus
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United States of America Patent
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Jun 29, 2010
Grant Date -
Jan 15, 2009
app pub date -
Dec 29, 2006
filing date -
Jan 6, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A moving object detection apparatus comprises a transmitter, a receiver, a detection portion, a binary conversion portion and a judgment portion. The transmitter emits energy waves with a first frequency to a detection area. When receiving incoming energy waves from the detection area, the receiver generates an electric signal corresponding to the incoming energy waves. The detection portion obtains a detection signal from a reference signal with the first frequency and the electric signal. The binary conversion portion compares the detection signal with a conversion threshold signal to obtain a binary signal. The judgment portion judges whether or not a moving object approaching or leaving the receiver exists in the detection area based on the binary signal.
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