RFID TAG READING DEVICE, RFID TAG READING PROGRAM, AND RFID TAG READING METHOD

摘要

An RFID reading device according to the present invention includes: response requesting unit (20) configured to output a response request signal to a wireless tag; response reception unit (24) configured to extract an ID of the wireless tag and detecting a signal collision of a response from the wireless tag, based on a response signal output from the wireless tag in response to the response request signal; reading result acquisition unit (25) configured to acquire a read tag number indicating the number of wireless tags from which the corresponding ID has been successfully read; collision occurrence status acquisition unit (26) configured to count the number of time slots in which the signal collision has occurred and calculating the number of collisions; and reading result complementing unit (27) configured to estimate the number of readable wireless tags based on the read tag number and the number of collisions.

主权项

1. An RFID tag reading device comprising:
response requesting unit configured to output a response request signal to a wireless tag; response reception unit configured to extract an ID of the wireless tag and detecting a signal collision of a response from the wireless tag, based on a response signal output from the wireless tag in response to the response request signal; reading result acquisition unit configured to acquire a read tag number indicating the number of wireless tags from which the corresponding ID has been successfully read; collision occurrence status acquisition unit configured to count the number of time slots in which the signal collision has occurred, and for calculating the number of collisions; and reading result complementing unit configured to estimate the number of readable wireless tags based on the read tag number and the number of collisions.