A method and device for detecting receiving sensitivity of an RFID reader
A technology of receiving sensitivity and detection method, which is applied in the field of receiving sensitivity detection of RFID readers, can solve the problems of low accuracy, low isolation, complex structure, etc., and achieve the effect of fast detection
Active Publication Date: 2021-03-05
WUHAN WANJI INFORMATION TECH
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[0005] However, after the former calibrates the darkroom in advance, the receiving sensitivity of the RFID reader is determined by comparing the test results of the RFID reader with the calibration value of the darkroom. It directly depends on the calibration of the darkroom, the change of the operator and the replacement of the test instrument will have a great impact on the results
The latter uses a circulator isolation method to isolate the transmitted signal from the received signal. Due to the low isolation of the circulator, uncontrolled reflection signals will be introduced during the detection process, which will bring additional noise and cause detection results The deviation from the actual result is large and the accuracy is low
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[0022] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. 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] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] refer to figure 1 , which shows a schematic structural diagram of an RFID reader-writer receiving sensitivity detection system according to an embodiment of the present invention.
[0025] Such as figure 1 As shown, the receiving sensitivity detection system 100 of the RFID reader provided by the embodiment of the present invention includes: the RFID reader 01 to be ...
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Embodiments of the present invention provide a method and device for detecting receiving sensitivity of an RFID reader-writer. The method includes: for each frame of baseband data signal transmitted by the RFID reader-writer to be tested, generating a label analog backscatter coupling signal corresponding to the baseband data signal of the current frame and returning it to the RFID reader-writer to be tested; and The power value of the tag simulated backscatter coupling signal corresponding to the baseband data signal of the current frame is lower than the power value of the tag simulated backscatter coupling signal corresponding to the baseband data signal of the previous frame; if the RFID reader to be tested is not received For the transmitted Nth frame of baseband data signal, the power value of the tag's simulated backscatter coupling signal corresponding to the N-1th frame of baseband data signal is determined as the receiving sensitivity. The device is used to perform the above method. The method and device provided by the embodiments of the present invention can detect the receiving sensitivity of the RFID reader-writer more conveniently, accurately and quickly.
Description
technical field [0001] The embodiment of the present invention relates to the technical field of radio frequency identification, and in particular to a method and device for detecting receiving sensitivity of an RFID reader-writer. Background technique [0002] At present, in the field of radio frequency identification technology, the receiving sensitivity of an RFID (Radio Frequency Identification, radio frequency identification) reader is a key technical index reflecting the device performance of an RFID reader. In the field of radio frequency identification technology, when the electromagnetic backscatter coupling method is used to complete the communication between the RFID reader and the electronic tag, the electronic tag does not have the ability to transmit signals, but receives the high frequency signal sent by the RFID reader. The carrier signal generates an induced current, supplies power to the electronic tag, and relies on the tag antenna to perform backscatter m...
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IPC IPC(8): G06K7/00
CPCG06K7/0095
Inventor 吴雷王鹏鹏王奇武李煜胡攀攀
Owner WUHAN WANJI INFORMATION TECH