Infrared intruder-detection system
US5334972A · kind A · utility
14Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/183
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a separate type infrared intruder-detection system consisting of an infrared beam projector and an infrared detector, the infrared detector is provided with a signal transmitter for transmitting an output level of the infrared detector, while the infrared beam projector is provided with a signal receiver for receiving a signal transmitted by the signal transmitter. These additionally equipped signal transmitter and signal receiver make it possible to achieve an initial beam-axis adjustment operation by one installation operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.