A Method for Eliminating Recognition Blind Area
A blind area and to-be-identified technology, applied in the field of radio frequency identification, can solve the problems of inability to complete the identification process, waste of time and energy consumption, repeated identification many times, etc., to achieve strong anti-interference ability and adaptability to metal environment, eliminate interference, eliminate The effect of the identification process
Active Publication Date: 2018-06-15
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology
Because it is a single antenna, there is a problem of repeated identification many times, or even unable to complete the identification process
[0007] The method described in Zhong Yuanchang's article has made great progress, but the identification of each antenna is independent of each other, and there are cases where the tag is recognized multiple times by multiple antennas, resulting in a large waste of time and energy consumption; on the other hand, in order to To achieve high reliability of system identification, the number of reference tags should not be too small, and the identification of reference tags and actual tags together will greatly increase the probability of collision and make the identification efficiency very low
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[0018] The method for eliminating blind spots in the present invention specifically includes the following steps:
[0019] S010. Reasonably arrange reference labels in the target area to be identified, and number these labels (RefT 1 , RefT 2 ,...,RefTn); using a multi-antenna reader, set its antenna (At 1 , At 2 ,...,At m ) are also set at different locations in the area and numbered.
[0020] These reference tags are evenly distributed in the specified area, which is equivalent to a reference tag representing a small area. If a certain antenna of the reader (At i ) can identify the reference tag, it is considered that all possible tags in the small area can be identified by this antenna. If several antennas are selected in sequence {At 1 ’, At 2 ’,…, At s ’}, these reference nodes can be identified, which is the antenna order in which the identification tags are activated successively. The present invention tries to obtain the sequence with the least number of anten...
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The invention relates to a method for eliminating an identification blind area. The method comprises the following steps: arranging reference labels for a target area to be identified in a reasonable manner and performing numbering; selecting a plurality of reference labels to form a set through a reader, and through identification of the labels in the set, determining the sequence of antennas to be started successively; selecting one antenna as an antenna about to be started from the position of each antenna in a known reference label set and the position of each antenna in a reader antenna set; successively identifying each reference label in the label set firstly by use of the selected antenna, recording an identified label set and an unidentified label set, and selecting antennas whose label sets are not empty for identifying labels to be identified; and performing identification of a next round until all the reference labels are identified. The method provided by the invention is reasonable in design, simple in steps, quite high in anti-interference capability and metal environment adaptability and quite high in identification efficiency.
Description
technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a method for eliminating identification blind spots. Background technique [0002] Radio Frequency Identification (RFID) is a system that conducts non-contact two-way data communication through radio frequency, identifies tags and obtains relevant data. It has had a profound impact on the network, life, economy, culture, military and many other aspects, and has become another important technology after the Internet and wireless mobile communication. [0003] Since high-frequency RFID technology has the characteristics of long recognition distance and strong label recognition ability, it has received extensive attention in the field of industrial production automation and control. The application of RFID technology in automobile production lines is currently one of the more popular applications. Many automobile manufacturers apply RFID technology to automob...
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IPC IPC(8): G06K7/10G06K7/00
CPCG06K7/0008G06K7/10128
Inventor 崔英花闫楚韩
Owner BEIJING INFORMATION SCI & TECH UNIV