System for testing NAC operability using reduced operating voltage
US8289146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2011 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/181
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A monitoring system for a NAC (Notification Appliance Circuit) is provided. The monitoring system includes a system controller, and a NAC comprised of one or more notification appliances that may be in a series. The NAC and its appliances may be operatively coupled to the system controller. The system controller is operable to determine whether a notification appliance has sufficient voltage at a low voltage operation. The system controller may control the voltage to the NAC in order to provide power to simulate operation of the NAC using battery power. A voltage may be measured during the simulation (such as at one end of the NAC). The measured voltage may be compared with a predetermined minimum operating voltage for the notification appliance. Based on the comparison, it may be determined whether the one or more appliances on the NAC may operate properly when the NAC is operated using battery power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.