Method and device for door monitoring and door monitoring system including such a device
US10984639B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jul 13, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Oct 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/62
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A monitoring method to detect a state of a door provided with a locking system. The method comprises the following steps: a measurement step during which a mechanical wave sensor measures a signal corresponding to a mechanical wave propagated in the door; a step of comparison between a reference signal stored in the memory and the mechanical wave signal in order to detect a state of the door. The reference signal is measured by the mechanical wave sensor while the locking system of the door is actuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.