Wireless real time location system (RTLS) using audible and/or visible signals
US7541927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2006 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/30
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A real time location system has a plurality of tag devices. Each tag device has a unique identification code. Each tag device will transmit a location signal when activated. A plurality of location receivers are installed in a fixed location. The location receivers will receive the location signal and calculate a location of the tag device transmitting the location signal. A signal mechanism is coupled to an I/O port of each tag device. The location mechanism provides at least one of an audible signal or visual signal when activated. A location reader is provided. The location reader receives the location data transmitted by the plurality of location receivers to enable a person to locate the tag device transmitting the location signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.