| 摘要 |
PROBLEM TO BE SOLVED: To efficiently acquire information from a plurality of identification objects each having a radio tag.SOLUTION: A tag access device 1 includes a tag access antenna device 2 and a reader/writer 3. The tag access antenna device 2 generates an electric field in accordance with the instruction of the reader/writer 3, and performs access to an RFID tag 11 attached to each of a plurality of test tubes 10. The tag access antenna device 2 includes: a casing 21; four antennas 20 attached to the casing 21; and partition walls 23. The partition walls 23 are positioned inside the casing 21, and configured as conductive plate-shaped members for partitioning the housing space of each antenna 20. A conductive housing body whose capacity is smaller than that of the casing 21 is formed of the partition walls 23 and the side walls of the casing 21. The conductive housing body formed of the partition walls 23 houses the antennas 20, and has an action to increase magnetic field intensity to a radiation surface 22 as the open end surface of the conductive housing body. |
