Grabbing type flexible sorting method based on RFID space positioning technology

Abstract

The invention belongs to the field of logistics sorting, and particularly discloses a grabbing type flexible sorting method based on the RFID space positioning technology. The method includes the steps of putting target packages with attached RFID tags on a moving conveying belt, obtaining radio frequency information of the RFID tags on the target packages to obtain periodic discontinuous phase values based on the time sequence of the RFID tags on the target packages, performing treatment through an improved unwrapping algorithm to obtain an unwrapping phase, calculating estimated coordinatesof the target packages at the moment of reading and writing the radio frequency information of the RFID tags on the target packages through an RFID reader-writer within the grabbing range W*L, modifying the estimated coordinates of the target packages to obtain actual coordinates of the target packages, and flexibly sorting the target packages according to the actual coordinates of the target packages through a sorting mechanism. By means of the method, the automatic logistics sorting precision and accuracy are effectively improved, and therefore the method is particularly suitable for sortingoccasions with weak light and a large number of packages.

Description

technical field [0001] The invention belongs to the field of logistics sorting, and more specifically relates to a grasping flexible sorting method based on RFID spatial positioning technology. Background technique [0002] Picking operation is the job with the most time, manpower and cost, and it is rising rapidly, becoming the biggest pain point in the logistics industry. Most of the existing logistics sorting systems use visual solutions, which cannot be applied on a large scale due to the high requirements for visual distance and light. [0003] RFID radio frequency identification technology can remotely obtain the ID information of the tag through the electromagnetic field emitted by the antenna device. In recent years, RFID positioning technology has received extensive attention and research. This project introduces RFID tag positioning technology into logistics automation sorting, and on the basis of RFID tag ID information identification, endows it with position aw...

AI Technical Summary

Problems solved by technology

This project only uses RFID technology to read and write data, but cannot realize the precise positioning of the items on the conveyor belt. The sorting mechanism cannot control the position of the items to be sorted in real time, and it is difficult to realize a highly automated logistics sorting system.

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