Multiple channel ballast and networkable topology and system...

Details Multiple channel ballast and networkable topology and system... Multiple channel ballast and networkable topology and system...

2006-03-07

2006-03-07

Philogene, Haissa (Department: 2828)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S224000, C315S2090SC, C315S325000, C315S318000

Reexamination Certificate

active

07009348

ABSTRACT:
Control systems and methods for independent control of power systems, particularly lighting network branches, and separate control of individual branch components. Multi-branch systems comprise independently controllable branches that inter-communicate via PLC communications. In each branch, components such as ballasts, local control units, sensors, actuators, and repeaters, may exchange commands and queries independently of a branch remote control unit (BRCU). Alternatively, a BRCU may manage or arbitrate communications, or interact with other BRCUs, other control units and external management systems. Ballasts include a multi-channel ballast that enables close-loop control of individual fixtures, or of individual dimmable or non-dimmable lamps within a fixture. The close-loop control is facilitated by sampling circuits/sensors co-located with each controlled fixture or lamp. All controllers are preferably implemented using an integrated digital controller. The PLC communication is preferably carried out by a direct spread spectrum method that eliminates side lobes from a cross-correlation function, using an anti-collision protocol.

REFERENCES:
patent: 4425628 (1984-01-01), Bedard et al.
patent: 5471119 (1995-11-01), Ranganath et al.
patent: 6043633 (2000-03-01), Lev et al.
patent: 6181086 (2001-01-01), Katyl et al.
“A 1.2 kW Electroni Ballast for Multiple Lamps, with Dimming Capabiility and High-Power-Factor” Gules et al; IEEE 1999 pp 720-726.

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