System and method for identifying multiple RFID tags in sealed metal environment

An RFID tag and identification system technology, applied in the direction of electromagnetic radiation induction, instruments, induction record carriers, etc., can solve the problems of RFID card reader processing blockage, transmission power improving RFID tag reading rate, collision algorithm failure and other problems, to reduce The effect of false reading rate and missing reading rate, eliminating reading blind spots, and eliminating transmission blind spots
CN105488446AActive Publication Date: 2016-04-13深圳市利谱信息技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深圳市利谱信息技术有限公司
Publication Date
2016-04-13

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Abstract

The invention discloses a system and a method for identifying multiple RFID tags in a sealed metal environment. The system comprises a control module and an RFID reader-writer, wherein the control module is connected with the RFID reader-writer, a locking apparatus of a sealed metal device and a remote server, and is used for user identity recognition and authentication, RFID tag registration and management, and remote server information transmission and reception; the RFID reader-writer is connected with the control module and an UHF antenna group, and is used for blind area monitoring, UHF antenna time division switching, RFID tag collision detection and RFID tag identification; the UHF antenna group comprises two or more UHF antennas; each UHF antenna is connected with the RFID reader-writer; and the RFID tags are attached to to-be-managed articles. According to the system and the method, the design of the antennas reliably working in the sealed metal environment is realized, the sensitivity of the RFID tags to the environment and the mutual interference of short-distance adjacent tags are overcome, the difficult problem in static and effective identification of densely stacked articles in a sealed metal space is solved, and the misreading rate and the missing reading rate of the RFID tags are reduced as far as possible.
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Description

technical field

[0001] The invention belongs to the technical field of article management and information security, and is especially suitable for RFID multi-tag identification in a closed metal environment. The invention can realize reliable identification when a reader and multiple RFID tags are placed in a closed metal environment. Background technique

[0002] In recent years, the rapid development of RFID radio frequency identification technology has attracted great attention from the industry, and is recognized as one of the most promising information technologies in this century. RFID technology has been widely used in industry, logistics and other fields. However, there are still some problems in the identification of RFID multi-tags in a closed metal environment.

[0003] RFID is extremely susceptible to interference from the external environment. In a closed metal environment, the impedance matching, bandwidth, radiation efficiency, and radiation pattern of the tag...

Claims

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