Smoke detector with performance reporting
US6838988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/145
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A cost effective system for testing smoke detectors and determining and communicating the operating characteristics thereof, advantageously uses existing circuitry components in a secondary communication function. With this arrangement, a low powered RF reporting signal is transmitted from the smoke detector and can be received within several feet of the detector. Preferably the RF signal is produced by a pulsed input signal provided to an existing coil which is part of the circuitry used to produce and/or report alarm signals. A receiving arrangement is also disclosed which can be located in close proximity to a smoke detector which has been activated to report the operating characteristics thereof. These characteristics can then be analyzed to determine whether preventive maintenance is appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.