Multi-type information collection method based on large-scale radio frequency identification system

A radio frequency identification system and information collection technology, applied in the field of large-scale RFID system information collection protocol, can solve the problems of slow and long information collection process, different data amounts of information stored and detected by tags, and different time slot lengths, etc.

Inactive Publication Date: 2018-01-19
TAIYUAN UNIV OF TECH
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Problems solved by technology

However, due to different types of items, the attached tags store and detect different information and data volumes, resulting in diff

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  • Multi-type information collection method based on large-scale radio frequency identification system
  • Multi-type information collection method based on large-scale radio frequency identification system
  • Multi-type information collection method based on large-scale radio frequency identification system

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Embodiment Construction

[0016] A multi-type information collection method based on a large-scale radio frequency identification system, which is divided into three parts. The first part is to classify all tags according to the amount of information to be transmitted when the reader needs to read tag information. In this way, the tags that do not need to reply to the information can be kept silent, and the interference to the communication of the tags that need to reply to the information can be reduced, and the waste of time slots caused by the transmission of small amounts of information in large time slots can be avoided, and the execution time of the entire method can be shortened; The second part is to sort each type of tag through multiple hash functions, so that it can reply the information to the tag in the corresponding time slot to avoid collision between tags; in the third part, a counter N is introduced, and the first The reply vectors generated in the second part are sorted and compressed,...

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Abstract

The present invention relates to a large-scale RFID system information collection protocol, in particular to a multi-type information collection method based on a large-scale radio frequency identification system. The present invention mainly proposes a fast and effective information collection method (ICCP) for the application of the large-scale RFID system. The method is characterized in that: areader divides tags of an identification area into multiple categories according to the size of the transmitted information, can avoid the small amount of information to transmit in the large time slots through classification, saves information collection time, and at the same time eliminates the response of a part of tags that do not need to collect information; pseudo-random sorting is carriedout on each category of tags through multiple hash functions; and finally, the empty time slots in the tag reply process are eliminated by processing, and the tags are enabled to sequentially send information to the reader, so that the ICCP is closer to the ideal information collection time.

Description

technical field [0001] The invention relates to a large-scale RFID system information collection protocol, in particular to a multi-type information collection method based on a large-scale radio frequency identification system. Background technique [0002] Large-scale RFID systems are widely used in shopping malls, warehouses, and supply chains. Due to their low cost, smart appearance, and ability to store information, through communication with readers, they can store information about items and monitor them. Information about the surrounding environment is transmitted to the reader, which greatly facilitates the user's management of a large number of items. However, due to different types of items, the tags attached to them store and detect different information and data volumes, resulting in different time slot lengths for tags to be transmitted to readers, which makes the entire information collection process very slow. Therefore, designing an efficient information co...

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Application Information

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IPC IPC(8): G06K17/00
Inventor 赵菊敏李灯熬杨海珠
Owner TAIYUAN UNIV OF TECH
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