Microwave sensor and mutual interference preventing system between microwave sensors
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United States of America Patent
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Aug 14, 2007
Grant Date -
Oct 27, 2005
app pub date -
Mar 30, 2005
filing date -
Mar 30, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microwave sensor is provided that transmits microwaves toward a detection area, performs an object detecting operation based on reflected waves from an object being present in the detection area, and outputs an object detection signal based on a result of the abject detecting operation, the microwave sensor being provided with a detecting operation controller for controlling the object detecting operation to be performed intermittently at a predetermined detection cycle, a time setting changer for changing time setting of the detection cycle, and a filter for preventing a signal outside of a frequency region of a signal obtained when detecting a human figure from being included in the object detection signal and from being output,
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