Wireless room occupancy monitor
US12375877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Mar 1, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless room occupancy monitor, system and training method are provided. The room occupancy monitor includes an antenna array configured to detect wireless transmissions from a tag device; a wireless transceiver configured to receive the wireless transmissions detected by the antenna array and produce receive signals; a processor configured to process the receive signals; and a motion sensor coupled to the processor and configured to wake up the processor in response to detecting when the tag device enters or exits a room. The monitor is configured to be mounted proximate an entryway to the room. After the motion sensor wakes up the processor, the processor is configured to power on the wireless transceiver and run an algorithm on a sequence of received signal strength estimates and array response vectors derived from the receive signals to determine when the tag device has entered or exited the room via the entryway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.