| 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 positioning means and a reader operable to receive at least one reading at at least one first antenna (9) from at least one tag (5) attached to the item (2), the first antenna (9) being adapted to be arranged at a read point (4) along the conveyor belt (3), wherein the positioning means is configured to retrieve a first position of the item (2) at a first time instant (t1) before the first antenna (9) and a second position of the item (2) at a second time instant (t2) after the first antenna (9), the first and second time instants (t1, t2) defining a time window (W), wherein the reader is configured to extract from each reading retrieved by the first antenna (9) a measurement (6) of the phase of the signal transmitted by the tag (5) and perform a data processing of the phase measurements (6), which data processing comprises constructing a phase curve (7) from the phase measurements (6) and determining a global maximum (8) on the phase curve (7), wherein the reader is configured to associate the tag (5) to the item (2) if the global maximum (8) lies within the time window (W), whereby the identification of the item (2) is accomplished. Also, the invention relates to a method (100) of identification of an item (2). |
