RFID two-dimensional position localization method based on rotating antenna

Abstract

The invention discloses an RFID two-dimensional position localization method based on a rotating antenna. The method uses the rotating RFID antenna to read the signal strength information of an RFID tag to be tested. A preset number of reference tags are sets at a specified position. The signal strength information and the reference tags are combined to calculate the distance and the relative direction between the RFID antenna and the RFID tag to be tested. Specifically, according to the actual rotation time stamp and the termination time stamp of a rotating station and a time stamp at the corresponding time of the RFID antenna and the RFID tag to be tested, the rotation angle of the RFID antenna at the corresponding time is calculated. Two or three reference tags are set to calculate thedistance between the RFID antenna and the plane of the RFID tag to be tested. The acquired rotation angle is combined with the distance between the RFID antenna and the plane of the RFID tag to be tested to acquire the x-axis coordinate and the z-axis coordinate of the RFID tag to be tested and realize two-dimensional position localization of the RFID tag. The method provided by the invention hasthe advantages of high accuracy of RFID tag localization and wide application range.

Description

technical field [0001] The invention belongs to the technical field of the Internet of Things, and in particular relates to a two-dimensional position positioning method of RFID (Radio Frequency Identification) based on a rotating antenna. Background technique [0002] At present, the Global Positioning System (GPS) has achieved fruitful results in outdoor positioning, can achieve high positioning accuracy, and is widely used in map navigation and other aspects. However, GPS cannot capture accurate information in the indoor environment, and it is difficult to meet the accuracy requirements of indoor positioning. At the same time, there are very large indoor positioning requirements in the fields of indoor navigation, buildings, warehouse management, parking guidance, etc., so the research on indoor positioning technology is very necessary . Compared with outdoor positioning, indoor positioning environment is more complicated, and there are more signal interference factors, ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a two-dimensional RFID position positioning method based on a rotating antenna to solve the problems of high antenna deployment cost and limited range in the positioning process in the prior art. The method uses a uniformly rotating RFID antenna to read The signal strength information of the RFID tag, and with the aid of the set reference tag to realize the two-dimensional position positioning of the tag to be tested

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