| 摘要 |
<p>Flexible tags (22) are secured to parcels (24) moving upon a conveyor belt (20). The flexible tags (22) each contain a transponder circuit (32) in electrical communication with a transponder antenna (30). The transponder circuit (32) contains a unique digital code containing data relating to the parcel (24). A reader circuit (28) located in proximity to the conveyor (20) is in electrical communication with a reader antenna (26). The reader circuit (28) generates a signal in the presence of a flexible tag (22), which is transmitted to the transponder antenna (30) located on the flexible tag (22). The signal energizes the transponder circuit (32) in the flexible tag (22), which sends a unique digital code via the transponder antenna (30) back to the reader antenna (26). The digital code is transmitted from the reader antenna (26) to the reader circuit (28), where the digital code is analyzed to identify the contents of the parcel (24). The flexible tags (22) are agitated by forced air from a fan (12) to orient the flexible tags in non-parallel alignment in relation to the reader antenna (26) as they move along a conveyor (20).</p> |
