Wall switch for lighting load management system for lighting systems having multiple power circuits
First Claim
1. A wall switch for a lighting control system for a space equipped with multiple lamps for illuminating the space and multiple power circuits for supplying power to different groups of said lamps, said wall switch comprisingat least one sensor detecting conditions or events that indicate that increased illumination of said space by said lamps is needed or decreased illumination of said space by said lamps is allowable, said sensor producing output signals in response to the detection of such conditions or events,a microcontroller receiving said output signals from said sensor and producing control signals in response to the detection of conditions or events that indicate that increased illumination of said space by said lamps is needed,at least two drivers responsive to said control signals for supplying power separately to said relay power circuits in response to said control signals,at least two manually operable switches coupled to said microcontroller to provide said microcontroller with ON and OFF command signals for at least two of said lamp groups powered by different power circuits, anda separate status indicator light associated with each of said manually operable switches for providing an indication of whether the lamp group associated with each switch is currently ON or OFF.
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Abstract
A wall switch is provided for an automatic lighting control system for a space equipped with multiple lamps for illuminating the space and multiple power circuits for supplying power to different groups of said lamps. The wall switch includes at least one sensor detecting conditions or events that indicate that increased illumination of the space by the lamps is needed or decreased illumination of the space by the lamps is allowable. Normal control of the electric lighting is thus automatic to a large degree. But, at least two manually operable switches are coupled to the microcontroller to provide the microcontroller with ON and OFF command signals for at least two of the lamp groups powered by different power circuits. A separate status indicator light for each of the switches is controlled by the wall switch and provides an indication of whether the lamp group associated with each manual switch is currently ON or OFF as a safety and economy feature.
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14 Claims
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1. A wall switch for a lighting control system for a space equipped with multiple lamps for illuminating the space and multiple power circuits for supplying power to different groups of said lamps, said wall switch comprising
at least one sensor detecting conditions or events that indicate that increased illumination of said space by said lamps is needed or decreased illumination of said space by said lamps is allowable, said sensor producing output signals in response to the detection of such conditions or events, a microcontroller receiving said output signals from said sensor and producing control signals in response to the detection of conditions or events that indicate that increased illumination of said space by said lamps is needed, at least two drivers responsive to said control signals for supplying power separately to said relay power circuits in response to said control signals, at least two manually operable switches coupled to said microcontroller to provide said microcontroller with ON and OFF command signals for at least two of said lamp groups powered by different power circuits, and a separate status indicator light associated with each of said manually operable switches for providing an indication of whether the lamp group associated with each switch is currently ON or OFF.
Specification