Motion detection with rfi/emi protection

Details Motion detection with rfi/emi protection Motion detection with rfi/emi protection

G - Physics

08

B

G08B 13/18 (2006.01) G08B 29/24 (2006.01)

Patent

CA 2220807

A motion sensor has a parasitic response to at least one of radio frequency (RF) or electromagnetic (EM) impulse signals. The motion detection circuit for security systems has a dummy RF receiver for generating an RF response signal, the receiver having a response to at least one of radio frequency (RF) or electromagnetic (EM) impulse signals similar to the parasitic response. An alarm output signal is generated in response to intruder motion in the predetermined area while preventing false alarms due to the parasitic response.

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