Systems and methods for daylight harvesting
US10863596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2020 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Feb 24, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of determining a drive signal provided to a light-emitting diode (LED). The method includes in response to determining that a second light intensity exceeds the expected light intensity, determining, via the controller, an artificial light intensity based on a task-to-sensor ratio, determining, via the controller, a total natural light intensity based on the second light intensity and the artificial light intensity, determining, via the controller, a non-useful natural light intensity based on the total natural light intensity, the first light intensity, and the task-to-sensor ratio, determining, via the controller, the drive signal based on a desired light intensity for the zone, the total natural light intensity, the non-useful natural light intensity, and the artificial light intensity, and controlling, via the controller, the driver to provide the second drive signal to the LED array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.