Method and apparatus to determine a condition of a door
US10550601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Aug 3, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock assembly for a door, the lock assembly including a first magnetic field sensor and a second magnetic field sensor. The first magnetic field sensor and the second magnetic field sensor are moveable with respect to the door to determine an open position of the door, a close position of the door, and a fault condition. In one embodiment, the first magnetic field sensor and the second magnetic field sensor move with respect to the door as the door moves from the open position and the close position. The first magnetic field sensor is spaced from the second magnetic field sensor such that each of the first and second magnetic field sensors detects a different value of magnetic field intensity. A controller determines a position of the door with respect to a door frame using signals provided by the first and second magnetic field sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.