Systems and methods for tracking subjects
US9195866B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2015 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency identification (RFID) network and methods thereof for tracking subjects in a closed environment includes distributing RFID readers across the environment, at least some being at environment entry points. Readers have unique reader identifiers and communicate with a computer system. These identifiers and reader locations are stored. The ingress and/or egress of subjects bearing passive RFID tags is acquired by reading the unique subject identifiers off the tags from up to forty feet along with the reader identifiers of the readers making the readings. This informs a map comprising positions, on an environment diagram, of the subjects. The status of the readers is maintained by receiving and analyzing status signals from the readers. A subject data store is maintained and includes the ingress/egress data and electronic addresses of the subjects. An instruction set data store, each set corresponding to one of a plurality of events, is also maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.