Batteryless sensor used in security applications
US5572190A · kind A · utility
23Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Mar 22, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A batteryless sensor includes either a micro miniature generator/gear train or a piezoelectric crystal to convert a movement of a door or window to an ersatz V.sub.cc transient power supply to radiate a coded RF signal to a receiver, a distance away. The receiver may monitor a multiplicity of sensors to identify a source of an intrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.