Lighting control with occupancy detection
US7511613B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2005 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In illuminated local areas occupants are actively detected to facilitate control of the illumination and possibly other local parameters such as temperature. The emitted light in each local area is uniquely modulated to identify the respective area. The modulated light is detected by any wearable occupancy detectors in the local areas, which transmit detector-locator signals to lighting control units, thereby identifying which local areas are occupied. These signals may also uniquely identify the respective detectors, thereby enabling a lighting system controller to determine the number and identities of the detectors in each local area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.