Programmable security sensor
US9489828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B2047/0068
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Various embodiments of a programmable barrier alarm are described. In one embodiment, a programmable barrier alarm comprises a magnet and a sensor, the sensor comprising a magnetic field detector for sensing a magnetic field produced by the magnet and for producing an electronic signal associated with the magnetic field, a processor, and, a memory for storing an alarm threshold value and processor-executable instructions that, when executed by the processor, cause the sensor to, in a calibration mode of operation, calculate the alarm threshold value based on a first magnetic field sensed by the magnetic field detector when the barrier is in the closed position, and in a normal mode of operation, compare the electronic signal from the magnetic field detector to the alarm threshold value, and generate an alarm signal if the electronic signal falls below the alarm threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.