Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation
Patent
1997-09-16
1999-10-05
Philogene, Haissa
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Plural load device regulation
315295, 315308, 315361, 364492, G05F 100
Patent
active
059629894
ABSTRACT:
An energy saving lighting control system for operating fluorescent light fixtures is provided with means for controlling the light level according to the light required for the task being done in the area. Ambient light available from sources outside of the controlled area such as daylight can be harvested to reduce the amount of artificial lighting required. A method of providing sensor inputs to detect occupancy in the controlled area provides control signals to the lighting control system which are used to reduce the light level or turn light fixtures off at times when the area is not occupied. A method of providing a central control of the operation of the lighting system can provide time-of-day scheduling, can provide minimum and maximum lighting levels, and can provide calibration and set-points for response times to various sensor inputs. In order to minimize the installation cost of the lighting control system, the system is provided with components that can be controlled using signals carried along the power conductors that provide primary operative power to the lighting fixtures. Special circuitry in the ballasts for fluorescent lamps provides a starting sequence and operating conditions that maximize the life of the lamps which therefore minimizes maintenance costs.
REFERENCES:
patent: 3936696 (1976-02-01), Gray
patent: 4127796 (1978-11-01), Henderson
patent: 4139735 (1979-02-01), Dorfman et al.
patent: 4210846 (1980-07-01), Capewell et al.
patent: 4213182 (1980-07-01), Eichelberger et al.
patent: 4251752 (1981-02-01), Stolz
patent: 4358716 (1982-11-01), Cordes et al.
patent: 4388567 (1983-06-01), Yamazaki et al.
patent: 4461977 (1984-07-01), Pierpoint et al.
patent: 4464606 (1984-08-01), Kane
patent: 4523128 (1985-06-01), Stamm et al.
patent: 4523131 (1985-06-01), Zansky
patent: 4686427 (1987-08-01), Burke
patent: 4697122 (1987-09-01), Hoffer
patent: 4700113 (1987-10-01), Stupp et al.
patent: 4704563 (1987-11-01), Hussey
patent: 4716343 (1987-12-01), Lindquist
patent: 4902938 (1990-02-01), Lindquist
patent: 5030887 (1991-07-01), Guisinger
patent: 5066896 (1991-11-01), Bertenshaw et al.
patent: 5084653 (1992-01-01), Nilssen
patent: 5107184 (1992-04-01), Hu et al.
patent: 5128594 (1992-07-01), Watanabe et al.
patent: 5172034 (1992-12-01), Brinkerhoff
patent: 5179326 (1993-01-01), Nilssen
patent: 5204587 (1993-04-01), Mortimer et al.
patent: 5245253 (1993-09-01), Quazi
patent: 5315214 (1994-05-01), Lesea
patent: 5334915 (1994-08-01), Ohsaki et al.
patent: 5352957 (1994-10-01), Werner
patent: 5355055 (1994-10-01), Tary
patent: 5357170 (1994-10-01), Luchaco et al.
patent: 5363020 (1994-11-01), Chen et al.
patent: 5455487 (1995-10-01), Mix et al.
patent: 5621662 (1997-04-01), Humphries et al.
patent: 5668446 (1997-09-01), Baker
Elektronik, vol. 41, No. 26, dated Dec. 22, 1992, pp. 26-30, XP000327405, S. Luger et al., "Beleuchtung Wird Busfaehig".
Patent Abstracts of Japan, vol. 5, No. 109 (E-65>781|, dated May 2, 1981 & JP,A,54 125663 (Toshiba) Sep. 28, 1979.
Negawatt Technologies Inc.
Philogene Haissa
LandOfFree
Energy management control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Energy management control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy management control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1175334