A method for fast identification of RFID mobile tags by dual readers based on frame time slots
A mobile tag and reader technology, applied in the field of radio frequency identification technology (RFID), can solve the problems of small identification range and time waste of a single reader, and achieve the goal of reducing time slot costs, improving efficiency, and improving tag identification range. Effect
Active Publication Date: 2021-10-22
KUNMING UNIV OF SCI & TECH
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Problems solved by technology
[0005] The present invention provides a method for quickly identifying RFID mobile tags based on frame time slots for dual readers to solve the following technical problems in the environment of small and medium-sized tracked mobile tag streams: (1) The problem of a small recognition range of a single reader ; (2) Solve the problem of wasting time due to repeated identification of identified tags
Method used
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Embodiment 1
[0035] Embodiment 1: as figure 2 The design shown, a scenario diagram of a frame-slot-based dual-reader rapid identification method for RFID mobile tags. 200 new tags are randomly distributed in the area to be identified, the reader and the track are started, and the mobile tags gradually reach the identification area;
[0036] The concrete steps of described method are as follows:
[0037] Step1. Reader 1 sends a command to read the end code of the RFID tag, which means the start of the frame. After receiving the command from Reader 1, the tags in the area randomly select a time slot to respond. (When the tag adopts the FSA anti-collision algorithm to allocate gap);
[0038] Step2. For the sequentially polled time slots within a frame, reader 1 responds in the following three ways;
[0039] a. No response, that is, no tag communicates with reader 1, the tag does not perform any operations, all tag positions are adjusted, tags in the area are re-determined, and reader 1 en...
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The invention relates to a method for rapidly identifying RFID mobile tags by dual readers based on frame time slots, and belongs to the field of radio frequency identification technology (RFID). First, the reader 1 obtains the tag tail code within the identification range, determines whether the currently successfully recognized tag tail code already exists in the tail code table, and determines whether the tag has been read before; when the tail code exists in the tail code table, it does not Read the tag information, so that the information of the read tag can not be read repeatedly. When the suffix code does not exist in the suffix code table, read the tag information, add the suffix code to the suffix code table, and repeat this work until the end of the reader 1. , Reader 1 transmits the tail code table to Reader 2, and Reader 2 repeats the working method of Reader 1 until the end. The invention is well used in the simulation environment of RFID mobile tags, reduces the waste of resources caused by repeated identification of tags, improves the efficiency of tag identification, and has a wider identification range than a single reader, and can identify more Label.
Description
technical field [0001] The invention relates to a method for rapidly identifying RFID mobile tags by dual readers based on frame time slots, and belongs to the technical field of radio frequency identification technology (RFID). Background technique [0002] At present, there are two methods for processing RFID mobile tags in a small and medium-sized orbital mobile tag flow environment: [0003] One method is to use a single reader to identify mobile tags. The advantage is that the system is relatively simple, and the cost of reader purchase, installation and maintenance is low. The disadvantage is that the recognition area of a reader is relatively small and the recognition time is short. [0004] One method is to use multiple readers to identify mobile tags. The advantage of this method is that it has a large identification range. However, the identification area overlaps, which will cause interference, and it also needs to work alone. At the same time, the tag leaves t...
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IPC IPC(8): G06K7/10
CPCG06K7/10029
Inventor 李晓武吕昊宸李欣怡宋月玲贾连印丁家满游进国李润鑫
Owner KUNMING UNIV OF SCI & TECH