A Multi-reader Anti-collision Method
A reader and anti-collision technology, which is applied in the direction of instruments, sensing record carriers, calculations, etc., can solve the problems of reducing the working efficiency of RFID systems and readers without identification authority, and achieve the effect of preventing collisions and improving work efficiency
Active Publication Date: 2019-03-22
北京安拓思科技有限责任公司
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Problems solved by technology
However, this method will inevitably lead to the existence of readers without identification authority at any time, which reduces the work efficiency of the RFID system
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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] figure 1 It is a method flowchart of Embodiment 1 of a multi-reader anti-collision method of the present invention.
[0042] see figure 1 , the multi-reader anti-collision method includes:
[0043] Step ...
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The invention discloses a multi-reader anti-collision method. The method comprises the steps of acquiring distance to an adjacent reader by each reader through a control channel, determining a reader set with the reader, wherein the reader set comprises a proximity reader set, a neighboring reader set and an independent reader set; identifying non-controversial labels in an identification range by all readers in the neighboring reader set and the independent reader set, and determining the reader which corresponds with each non-controversial label; identifying controversial labels in the identification range by the readers in the neighboring reader set according to weight values, and determining the reader which corresponds with each controversial label in the neighboring reader set; and identifying all labels in the identification range by the readers in the proximity reader set according to the weight values. The multi-reader anti-collision method can realize participation of all readers into a label identification process, thereby improving working efficiency of the RFID system.
Description
technical field [0001] The invention relates to the field of radio frequency identification, in particular to a multi-reader anti-collision method. Background technique [0002] Radio Frequency Identification (RFID, Radio Frequency Identification) is a non-contact identification technology that does not require manual intervention and line-of-sight contact, and automatically identifies objects with tags through radio frequency signals. RFID technology has been applied in many occasions, such as: supermarket inventory management, airport luggage management, indoor positioning, tracking, etc. [0003] RFID systems include readers and tags. The tag is attached to the target object, and the reader is used to identify the tag. But when the number of tags is large, the recognition speed of a single reader is very slow and the performance is poor, so multiple readers are introduced to identify tags. When all the readers work at the same time, because multiple readers send radio ...
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IPC IPC(8): G06K7/00
CPCG06K7/10079
Inventor 谢刚刘元安王楠
Owner 北京安拓思科技有限责任公司