| 摘要 |
The invention relates to a system (1) for identification of an item (2), wherein the system (1) comprises a conveyor belt (3), a conveyor belt controller and a reader operable to receive at least one reading from at least one tag (5) attached to the item (2) and extract from the reading a measurement (6) of the phase of the signal transmitted by the tag (5) and received at at least one antenna of the reader, the antenna being adapted to be arranged at a read point (4) along the conveyor belt (3), wherein the conveyor belt controller is configured to start the conveyor belt (3) at a first time instant (t1), after the item (2) has been placed on the conveyor belt (3), and to stop the conveyor belt (3) at a second time instant (t2), when the item (2) has passed the antenna of the reader, the first and second time instants (t1,t2) defining a time window (W), wherein the reader is configured to associate the tag (5) to the item if the pattern of the phase measurements (6) of the tag (5) before, within and after the time window (W) corresponds to the pattern of the movement of the item (2) on the conveyor belt (3), whereby the identification of the item (2) is accomplished. Also, the invention relates to a method (100) of identification of an item. |
