Monitoring device for a tracking system
US8310379B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2008 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Aug 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q10/08
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A monitoring device for a tracking system is described. The device includes a: communication circuit for communication with radio frequency identification (RFID) tag on an article to-be transported by the vehicle, and a-position system (PS) circuit for determining vehicle location. The device includes a control circuit having a microprocessor and a memory, and electrically connected to the communication and PS circuits. The microprocessor acquires tag data and location in memory, and operates the communication circuit to: interrogate tag, operate the PS circuit to determine vehicle location, and associate tag data with vehicle location The device includes an alarm electrically connected to the microprocessor. The device determines, approximates, distance from the tag to device, based on received signal strength, or time delay in receiving the tag's response, and activates the alarm if a distance threshold from tag to device is exceeded. This threshold is lower than the maximum range of the tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.