Dynamic drawing method of RFID tag direction map based on reading distance measurement in gate environment

Abstract

Electrical parameters representing performance of an antenna can be obtained conveniently through an antenna directional diagram, for measurement of the antenna directional diagram, an automatic broadband antenna lobe recording instrument is generally adopted for measuring the antenna to be measured, the method needs to be carried out in a static environment, the real-time antenna directional diagram can not be drawn under the actual environment, and influence on an actual system from external electromagnetic interference can not be reflected. The invention provides a method for dynamically drawing the RFID label directional diagram on the basis of reading distance measurement in the gate environment. According to the method, the reading distance of each position of an RFID label on a three-dimensional rotary table is obtained through an RFID reader-writer, the reading distance is further converted into reading power of the RFID label, and therefore the directional diagram of the RFID label antenna can be drawn. The method can be applied to real-time measurement, and is a supplement to an antenna measuring method under the standard environment.

Description

technical field [0001] The invention relates to the field of RFID technology application, in particular to the dynamic drawing of the direction diagram of the RFID tag, in particular to the dynamic drawing of the direction diagram of the RFID tag by introducing the reading distance in the gate environment, and belongs to the technical field of electronic information and automatic detection. Background technique [0002] Radio Frequency Identification (RFID), as a novel non-contact automatic identification technology, has been widely used in many fields such as modern logistics, intelligent transportation, production automation, etc., especially in the intelligent logistics that people pay close attention to. Collection and goods inventory applications are particularly prominent. The principle of RFID technology is to use the spatial coupling or reflection of radio frequency signals to automatically identify target objects and obtain relevant information. The reader in the R...

AI Technical Summary

Problems solved by technology

For the measurement of the antenna pattern at this stage, the antenna lobe automatic recorder is generally used to measure the antenna to be tested. This method needs to be carried out in a static environment, and it cannot draw the real-time antenna pattern in the actual environment, let alone reflect external electromagnetic interference. Impact on the actual system

At present, there are many researches on the dynamic performance of RFID tags at home and abroad, but there is no work on drawing the direction map of RFID tags in a dynamic environment in the literature, which needs further research and exploration

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