RFID-based positioning method and device and electronic equipment

Abstract

The embodiment of the invention provides a RFID-based positioning method and device and electronic equipment. The RFID-based positioning method provided by the embodiment of the invention comprises: transmitting a superposed signal comprising detection signals of a plurality of frequency points; modulating and reflecting the superposed signal by an RFID tag and then receiving the superposed signal by a receiving antenna; determining the channel state information (CSI) of a reflected signal, and determining a direct path CIR according to the CSI; and finally, obtaining the arrival phase of each frequency point signal through direct path CIR reverse conversion, so that a power holographic image is constructed, and determining the position of the RFID tag based on the power holographic image. Interference components in the received signal are eliminated, and accurate tag positioning is realized.

Description

technical field [0001] The embodiment of the present invention relates to the field of computer technology, and in particular to an RFID-based positioning method, device and electronic equipment. Background technique [0002] Radio-frequency identification technology (Radio-Frequency Identification, RFID) refers to the technology of non-contact and remote activation of tags and reading their IDs through wireless signals. RFID tags can work without batteries, so they are easy to use and low in production cost. They have been widely used in identification documents, access control, logistics transportation and asset management and other fields. [0003] In actual use and deployment, when the RFID system reads the target RFID tag, due to the existence of multiple non-line-of-sight propagation paths caused by reflection, diffraction, etc., the signal will be distorted and the reading performance of the system will be affected. , resulting in the phenomenon of serial reading or ...

AI Technical Summary

Problems solved by technology

[0003] In actual use and deployment, when the RFID system reads the target RFID tag, due to the existence of multiple non-line-of-sight propagation paths caused by reflection, diffraction, etc., the signal will be distorted and the reading performance of the system will be affected. , resulting in serial reading or missing reading, etc.

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