Wireless tag scanning system
First Claim
Patent Images
1. A wireless tag scanning system that scans a wireless tag using an electromagnetic wave, comprising:
- movable means for moving an antenna section of a wireless tag scanning device in parallel with one axis on which a plurality of management objects having attached thereto wireless tags with their directivity aligned are arranged;
position detection means for detecting a distance by which the antenna section moves;
directivity control means for selectively directing the directivity of the antenna section of the wireless tag scanning device to a direction perpendicular to the move axis; and
means for detecting the existence position of a wireless tag using detected identification information of the wireless tag and a move distance of the antenna section;
wherein the arrangement space for the plural management objects is larger than half of the spatial resolution determined by the directivity in the move axis direction of the antenna section.
1 Assignment
0 Petitions
Accused Products
Abstract
Under the step management of a stepping motor, a move distance of an antenna of a wireless tag scanning device is calculated, and wireless tags are scanned in synchronization with a step move amount. The antenna controls its directivity using shield members etc., and lowers electromagnetic susceptibility in the moving direction. Accordingly, it becomes possible to detect a wireless tag located on a certain position, enabling position management with high resolution.
-
Citations
5 Claims
-
1. A wireless tag scanning system that scans a wireless tag using an electromagnetic wave, comprising:
-
movable means for moving an antenna section of a wireless tag scanning device in parallel with one axis on which a plurality of management objects having attached thereto wireless tags with their directivity aligned are arranged;
position detection means for detecting a distance by which the antenna section moves;
directivity control means for selectively directing the directivity of the antenna section of the wireless tag scanning device to a direction perpendicular to the move axis; and
means for detecting the existence position of a wireless tag using detected identification information of the wireless tag and a move distance of the antenna section;wherein the arrangement space for the plural management objects is larger than half of the spatial resolution determined by the directivity in the move axis direction of the antenna section. - View Dependent Claims (2, 3, 4, 5)
-
Specification