Grouping system of radio frequency identification labels

Abstract

The invention provides a grouping system of radio frequency identification labels, and is suitable for an environment in which a plurality of gateways are arranged at the left and right side at intervals. A plurality of articles with multiple radio frequency identification labels can pass through each gateway. The system for the dividing radio frequency identification label groups comprises a main right antenna, a main left antenna, an auxiliary right antenna set, a read unit and a processing unit, wherein the main right antenna is disposed at the left side of a target gateway and turns rightward to send and receive signals, the main left antenna is disposed at the right side of the target gateway and turns leftward to send and receive signals, and the auxiliary right antenna set is disposed at the right side of the main left antenna and turns rightward to send and receive signals. A reader reads the radio frequency identification labels through the main right antenna, the main left antenna and the auxiliary right antenna set, and the processor judges which radio frequency identification labels are included in the target group according to the radio frequency identification label read by the read unit through the main right antenna, the main left antenna and the auxiliary right antenna set.

Description

technical field [0001] The present invention relates to a grouping system, in particular to a radio frequency identification tag grouping system. Background technique [0002] refer to figure 1 , most commercially available radio frequency identification tag (RFID) reading systems are designed for an environment that includes a single gateway, so if this reading system is applied to an environment that includes multiple gateways, the antenna 12 installed on a gateway 11 Not only will the radio frequency identification tags 13 on the items passing through the gateway 11 be read, but also the radio frequency identification tags 13' on the items passing through the adjacent gateway 11' may also be read, so the radio frequency identification tags 13' read by the antenna 12 The identification tags cannot be directly regarded as being included in a group related to the gateway 11, that is to say not directly regarded as belonging to the same group. [0003] In order to obtain wh...

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Problems solved by technology

[0004] However, method (1) cannot prevent the antenna 12 from reading the radio frequency identification tags on items passing through the adjacent gateway; methods (2) and (3) are only applicable to environments with large spaces, and cannot be completely avoided. The antenna 12 reads the radio frequency identification tags on the items passing through the adjacent gateway; and in method (4), because the multiple items passing through the gateway 11 are stacked and shielded from each other, the radio frequency identification tags 13 on these items will The radiated signal is attenuated to varying degrees, so that the signal strength of the radio frequency identification tag read by the antenna 12 may not correctly reflect the distance between the antenna 12 and the radio frequency identification tag

Therefore, none of these methods can obtain reliable clustering results

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