Coded wireless key card sensor unit
US8653939B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 2, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Aug 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H27/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coded wireless sensor unit has a slot sized to receive a key card. When a key card is inserted into the slot, the act of insertion generates a energy-harvested power pulse, which powers circuitry that reads electrical device control information coded on the key card and creates a first information packet signal that is transmitted by an on-board transmitter. The signal can be read by a receiver and relayed to a control unit which controls certain electrical devices which consume line power in response to received information packet signals. The control unit decodes received information packet signals and either turns on or activates the electrical devices in accordance with the decoded device control information. Removal of a key card can also be used to generate a power pulse, which creates a second information packet signal that is used to turn off or deactivate the electrical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.