Title :
Solid-state lamp with integral occupancy sensor
Author :
Cooley, John J. ; Vickery, Dan ; Avestruz, Al-Thaddeus ; Englehart, Amy ; Paris, James ; Leeb, Steven B.
Abstract :
Previous work demonstrated a retrofit proximity detector for fluorescent lamps using the lamp´s own stray electric fields. This paper extends the retrofit sensor system to a solid-state (LED) lamp. The design and implementation of a suitable driver (¿ballast¿) for the LED lamp is presented. Design considerations for the ballast include those relevant to lighting (e.g. color cast and dimming levels) as well as those relevant to sensing of human occupants. Two electro-quasistatic modeling approaches for the lamp sensor are discussed. Experimental data from the LED lamp sensor are presented and compared to one of the proposed quasistatic models.
Keywords :
LED lamps; lamp accessories; optical sensors; LED lamp sensor; ballast; electroquasistatic modeling approach; fluorescent lamps; integral occupancy sensor; retrofit proximity detector; retrofit sensor system; solid-state lamp; stray electric fields; Electric variables measurement; Electrodes; Electronic ballasts; Fluorescent lamps; Frequency; LED lamps; Low-frequency noise; Sensor systems; Solid state circuits; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location :
Palm Springs, CA
Print_ISBN :
978-1-4244-4782-4
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2010.5433558
