Method and apparatus for verifying operation of notification appliances during low input voltage condition
US7333010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2005 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Aug 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for verifying operation of notification appliances on a notification appliance network during low input voltage conditions is provided. An output voltage is supplied to a network and is measured at a control panel. An input parameter is measured at a notification appliance connected to the network. A supply line impedance is calculated for the notification appliance based on at least one of the output voltage and the input parameter. At least one of the supply line impedance, the output voltage and the input parameter are used to determine a pass/fail condition for the notification appliance during a low voltage condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.