Method and apparatus for adapting voltage control in alarm systems
US5966002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1998 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | May 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An output voltage supplied to alarm devices in an alarm system is adjusted according to either a standby condition or an alarm condition. In the standby condition, a power control circuit adjusts power so that a standby voltage is supplied to the alarm devices which allows the alarm devices to respond to poll messages regarding their alarm status. An alarm condition is triggered when an alarm device responds with an alarm status indicating an alarm condition. During an alarm condition, the power control circuit adjusts power to provide a higher voltage to the alarm devices in order to allow additional alarm device functions to be operated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.