Lighting system and control thereof
US-2024411164-A1 · Dec 12, 2024 · US
Apparatus and method of energy efficient illumination
US8987992B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8987992-B2 |
| Application number | US-201414329508-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 11, 2014 |
| Priority date | May 20, 2009 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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Abstract
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An illumination system correlates solar time to a clock and controls lighting or illumination based on time. The illumination system may turn ON light source(s) at a first level at a turn ON time, correlated to be around or at dusk, and turn OFF light source(s) at a turn OFF time, correlated to be around or at dawn. The illumination system may reduce a level of light output, and hence power consumption, at a time after turning ON a light source, and increases the level of light output at a time prior to turning OFF the light source. Turn ON, turn OFF, decrease and increase times may be determined based on recent levels of light or illumination in the environment, for example via average or median levels over a number of previous daily cycles. Filtering may eliminate aberrant events.
First claim
Opening claim text (preview).
I claim: 1. A method of operating an illumination system, the method comprising: processing by at least one control system a plurality of samples, each sample including at least information representative of a level of illumination in an environment sensed by at least one sensor at a respective one of a number of times for each of two or more daily cycles prior to a current daily cycle, the processing by the at least one control system including: determining, by the control syste…
Assignees
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Classifications
- H05B47/11Primary
Electricity · mapped topic
- H05B47/16Primary
Electricity · mapped topic
Electricity · mapped topic
- H05B37/0218Primary
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8987992B2 cover?
- An illumination system correlates solar time to a clock and controls lighting or illumination based on time. The illumination system may turn ON light source(s) at a first level at a turn ON time, correlated to be around or at dusk, and turn OFF light source(s) at a turn OFF time, correlated to be around or at dawn. The illumination system may reduce a level of light output, and hence power con…
- Who is the assignee on this patent?
- Express Imaging Systems Llc
- What technology area does this patent fall under?
- Primary CPC classification H05B47/11. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).