Self-test method for a microwave module
US8552865B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Nov 19, 2010 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Nov 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/14
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus are provided for automatically testing microwave instruction detection modules of a security system. The method includes the steps of detecting intruders within a protected space by monitoring a Doppler output of a signal extraction circuit coupled to a microwave transceiver module, varying a frequency of direct current power pulses applied to the microwave transceiver module, detecting a difference in magnitude of the Doppler output of the signal extraction circuit over the varied frequency and comparing the detected difference with a fault threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.