Alarm system with alarm message supervision
US4622539A · kind A · utility
3Cited by
6References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | May 3, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An alarm message generation and broadcast system having supervision including an alarm message generation circuit for generating an alarm message, an output for receiving the alarm message so that the alarm message can be broadcast in response to an alarm event; and a supervision circuit connected to the alarm message generation circuit and responsive to the alarm message for providing a trouble signal when the alarm message is not properly received by the supervision circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.