Tamper resistant motion detector
US9324222B2 · kind B2 · utility
6Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Nov 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/046
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A tamper resistant motion detector is provided that can include a housing, a capacitive sensor, and a microprocessor. The housing can include a window, and the capacitive sensor can be located inside of the housing, behind the window. A capacitance of the capacitive sensor can change when the capacitive sensor detects an object on the window or within a predetermined distance from the window, and the microprocessor can read the capacitance of the capacitive sensor and use the capacitance of the capacitive sensor to determine whether to activate an alarm or to determine whether to activate an anti-mask system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.