System and method for detecting movement of a mobile asset and controlling operations of the asset based on its movement
US9841490B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2017 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jan 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2417
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method are provided for detecting direction of movement. The system includes at least two radio frequency identification (RFID) readers arranged in different locations. The RFID readers transmit respective location signals from their locations and receive corresponding response signals from a portable electronic device (PED) when the PED is within range to receive the corresponding location signals, respectively. The system includes a controller configured to determine whether the individual response signals received by the RFID readers respectively satisfy a predetermined condition at a first time and a second time subsequent to the first time. The controller is also configured to determine a direction of movement of the portable electronic device relative to the locations of the RFID readers during the first and second times based on whether the response signals respectively satisfy the predetermined condition at the first and second times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.