Method for improving RFID (Radio Frequency IDentification) rate
A technology of radio frequency identification and signal identification, which is applied in the direction of electromagnetic radiation induction, etc., can solve the problem of low recognition rate, achieve the effect of improving the recognition rate, avoiding missed detection, and avoiding accidental recognition
Active Publication Date: 2018-01-19
ZHENGZHOU UNIVERSITY OF AERONAUTICS +1
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[0005] The embodiment of the present invention provides a method for improving the radio frequency identification rate of RFID, which is used to solve the problem of low identification rate caused by conflicts caused by overlapping antennas in the working range of RFID in the prior art
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[0022] 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.
[0023] Figure 1A It is a schematic diagram of the implementation environment of a method for improving the RFID radio frequency identification rate according to an exemplary embodiment. Such as Figure 1A As shown, the implementation environment includes a reader 01 , a tag 02 , a processor 03 and a memory 04 . The reader 01 and the tag 02 communicated through an antenna before, and the reader 01 and the tag 02 of the present invention both use a single anten...
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The invention discloses a method for improving an RFID (Radio Frequency IDentification) rate, and relates to the technical field of RFID. The method for improving the RFID rate comprises the followingsteps that: after a tag receives second query information at a (k+1)T moment, judging whether information received at a kT+2T / 3 moment is NACK information or not; if the information received at the kT+2T / 3 moment is the NACK information, sending a sending signal to a reader again at a (k+1)T+T / 3 moment, judging whether a CRC (Cyclic Redundancy Check) checking value at a kT+T / 3 moment is 1 or notby a processor; if the CRC checking value at the kT+T / 3 moment is 1, combining a second identification signal with a first identification signal to obtain a third identification signal; and judging whether the reader correctly receives a tag identification code or not. Through the way of the invention, an ARQ (Automatic Retransmission Query) retransmission mechanism is adopted, so that the sendingsignal is transmitted again after the tag receives the feedback information of the identification code of a bit identification tag, the tag identification code is detected again through a way that the second identification signal and the first identification signal are combined, in addition, combined gain is obtained, and the RFID rate is improved.
Description
technical field [0001] The invention relates to the technical field of radio frequency identification, and more specifically relates to a method for improving the radio frequency identification rate of RFID. Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention. RFID is a simple wireless system, including two There are three basic components: a reader (or reader, reader) and many transponders (or tags). The working principle of traditional RFID technology: a unique code is stored in the RFID tag. When the tag enters the active area of the reader, the tag sends a weak signal to the reader, and the reader reads the signal into itself through the antenna and converts it into a number. Signal, and then carry out necessary processing an...
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Inventor 王丹赵凯郑宁刘兆瑜谷学汇申金
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS