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...

2009-07-07

2011-10-11

Philogene, Haiss (Department: 2821)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S341000, C375S360000, C375S143000, C375S130000, C375S140000

Reexamination Certificate

active

08036321

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: 6354946 (2002-03-01), Finn
patent: 7009348 (2006-03-01), Mogilner et al.
patent: 7539237 (2009-05-01), Fullerton
patent: 7573372 (2009-08-01), Mogilner et al.
patent: 7656931 (2010-02-01), Smith et al.

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