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Two Doppler radar occupancy sensor systems built with low-cost, low-power CC2530 are shown. One uses quadrature receiver, the other employs passive sensor node as receiver. The 12-minute experiment in which the quadrature sensor was exposed to a range of different presence/interference scenarios demonstrates such smart occupancy sensors can accurately detect the true presence occupancy by extracting...
Doppler Radar sensor is designed for occupancy detection application and tested in conjunction with common occupancy sensors such as passive infrared and ultrasonic to determine the optimal design for a robust and power efficient occupancy sensor. A 2.4 GHz CW radar is employed for the microwave presence detection. Sensors have been tested for different scenarios like hand waving, writing, and mechanical...
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