Tracking RFID objects with integrated communication link

摘要

A wireless system (101) includes a plurality of objects (106). The wireless system includes a controller 102 and a radio frequency identification (RFID) read-write (RW) device (103, 104, 105). Each of the objects includes an RFED device (107) and a transceiver (108). An object and methods of tracking objects are also disclosed.

主权项

1. A wireless system, comprising:
a stand-alone radio frequency identification read-write (RFID RW) device; and a plurality of objects, each object including:
a radio frequency identification (RFID) device adapted to receive information from the RFID RW device;a memory to store said information collected from the RFID RW device when the object is within a known transmission range to said RFID RW device; anda transceiver adapted to communicate with a controller independent of said RFID RW device, said transceiver communicating said collected information to said controller based at least on a detection of an event matching at least one criteria; the controller;
receiving the collected information from corresponding ones of the objects, anddetermining a path of each of said corresponding ones of the objects based on the information collected from said RFID RW device, wherein said RFID-RW device is adapted not to transmit to said controller.