Onboard equipment for aircraft and the like
US7265684B2 · kind B2 · utility
3Cited by
20References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Nov 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/357
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An emergency lighting system for an aircraft comprises networked light units that communicate wirelessly with a master controller to switch the light units on in an emergency. Each unit has its own battery power source and is arranged conserve power consumption by cycling between an operable (awake) condition in which it can communicate with the master controller and an inoperable (sleep) condition wherein the wake-up time is approximately 1 millisecond or less. Power consumption is also reduced by employing LEDs as the light source and pulsing the LEDs with a variable load factor to adjust the illumination level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.