Power control system and method for illumination array
US6667869B2 · kind B2 · utility
8Cited by
8References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | May 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power control system and method controls power supplied from a power source to a resistive load, such as a LED illumination array, to prevent the load from exceeding a high temperature limit. The power control system and method generates a pulse train that represents heating in the load and uses digital logic to model the load temperature and calculate a temperature out value. When the temperature out value increases to reach a high temperature limit value, the power source is disconnected from the load. When the temperature out value decreases to reach a base temperature value, the power source is re-connected to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.