A Retrofit Capacitive Sensing and Occupancy Detection System Using Fluorescent Lamps
نویسنده
چکیده
This paper presents a retrofit system that exploits a fluorescent lamp’s own stray electric fields as an excitation source for capacitive sensing. The principal result of this work is the demonstration of sufficient sensitivity for detecting human occupants below the lamp. Experimental results are presented demonstrating detection ranges of 10 ft. between the lamp and the nearest edge of a human occupant. Theory is developed to inform system design choices and future work. A full-system simulation is presented including the simulation of a lumped element capacitive model. A circuit model of the fully-differential front end amplifier is developed and then validated as part of the full-system simulation.
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تاریخ انتشار 2010