Tag information processing device, tag information processing system, tag information processing method, and program

Abstract

A tag information processing device includes: a movement direction judgment unit (103) which judges a movement direction of a tag in accordance of a change if tag read information in a first region and tag read information in a second region having an overlapped region with the first region indicate that the tag has moved from the state existing only in the first region; an appearance informationacquisition unit (104) which acquires appearance information indicating a tag appearance frequency by using the read information; a movement judgment unit (105) which judges whether the tag has movedout of the first and the second region by using the appearance information; an output judgment unit (106) which judges whether the tag for which the movement direction is judged coincides with the tag which is judged to have moved out of the first and the second region; and an output unit (107) which outputs a judgment result of the movement direction for the tag judged to be coinciding.

Description

technical field [0001] The present invention relates to a tag information processing device and the like for judging the movement of a radio frequency identification (Radio Frequency Identification, RFID) tag (tag). Background technique [0002] Conventionally, there is a tag information processing device or the like that estimates a moving direction based on a time difference when a plurality of tag readers arranged at spaced apart positions read a tag ID. (For example, refer to Patent Document 1). [0003] There is also a tag information processing device that holds radio wave intensity of an RFID tag at each receiving terminal and determines the moving direction of the tag based on a time change history of the radio wave intensity value (for example, refer to Patent Document 2). [0004] However, in a tag information processing device such as Patent Document 1, which uses the time difference when different tag readers read the same tag ID to estimate the direction of mov...

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to calculate the time difference between each tag reader reading the tag ID

As a result, there is a problem that the moving direction of the label cannot be accurately judged.

[0005] Furthermore, as in Patent Document 2, when the moving direction of the tag is judged based on the time change history of the radio wave intensity received from the area where the reading area does not overlap and the area where the reading area overlaps, the reading rate for staying in the reading area is low. RFID tags, even though they are physically present in the area, may still have a situation where the tag ID cannot be read

In this case, since the RFID tag is falsely detected as moving from the reading area, there is a problem that the moving direction of the tag cannot be accurately judged even if such a reading result is used.

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