Event detection system with centralized signal processing and dynamically adjustable detection threshold
US5471194A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An event detection system with centralized signal processing and dynamically adjustable detection threshold includes a number of remotely located event detection units coupled to a single centralized signal processing unit. Each event detection unit provides an event detection signal to the centralized signal processing unit. At least one signal processor in the centralized signal processing unit compares the value of the event detection signal with a dynamically adjustable threshold value, and provides a first detection signal when the event detection signal exceeds the value of the dynamically adjustable threshold. A threshold generator compares the event detection signal and a predetermined offset value, and adjusts the value of the dynamically adjustable threshold as the event detection signal exceeds the offset value. The signal processor then provides a second event detection signal when the event detection signal exceeds the adjusted threshold value. The invention further includes a mutual event verifier located in the centralized signal processing unit, for establishing at least one of the event detection units as a mutual verification event detection unit, and for activati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.