Luminaire control system and method
US7868562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system and method for controlling one or more light-emitting elements which are driven by forward currents to generate mixed light for use, for example, through a luminaire. The system has one or more light sensors for acquiring feedback optical sensor data and a user interface for providing reference data representative of a desired mixed light. The system also has a controller for transforming either the sensor data or the reference data into the coordinate space of the other and to determine a difference between the sensor and the reference data in that coordinate space. The controller is configured to adjust the forward currents during operating conditions so that the sensor data matches the setpoint data. The present invention also provides a system and method that can at least partially compensate certain temperature induced effects when transforming the optical sensor or the reference data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.