Doppler shift motion detector with variable power

Details Doppler shift motion detector with variable power Doppler shift motion detector with variable power

G - Physics

01

S

G01S 13/52 (2006.01) G01S 7/282 (2006.01) G01S 7/40 (2006.01) G01S 13/56 (2006.01)

Patent

CA 2104706

ABSTRACT OF THE DISCLOSURE The Doppler shift motion detector has an effective motion detection range which can be changed by changing the power level and thus without changing the motion detection circuitry. The Doppler shift motion detector also has a self test for the wave transmitter and receiver which can be carried out without requiring placing a moving object in the monitoring area. The Doppler shift signal generated when the power level is changed is used to check the detector for the self test and is ignored by the detector alarm output circuitry when the power level is changed. An anti-masking feature is also provided. -15-

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