Lumen depreciation management
US9119269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A monitoring system is configured to manage lumen depreciation in a lighting fixture and includes an optic housing, a light source with a light-emitting diode (LED), a processor, and a memory device. The memory device stores instructions that cause the monitoring system to measure elapsed time during which the LED light source emits the light and, based on the elapsed time, determine a current level of the emitted light. In response to the current level changing from an acceptable level to an unacceptable level, an alert is provided to show that the emitted light has reached the unacceptable level. A reset input is received to remove the alert for a predetermined period of time. Changes in status of the LED light source are indicated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.