Sensor test method and apparatus
US5686885A · kind A · utility
243Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Sep 28, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/002
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a security system having a remote monitoring station, a sensor is tested when the security system is in a normal operating mode. The sensor is tested by actuation of a button on the sensor. Actuation of the button generates a signal indicating that a test has been conducted. Upon the generatation of both an alarm signal generated by the test and a signal indicating that a test has been conducted, the security system determines that the alarm signal was generated by a test of the sensor and not by the detection of alarm conditions by the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.