A three-dimensional radio frequency identification network layout optimization method for a discrete manufacturing workshop

Abstract

The invention discloses a three-dimensional radio frequency identification network layout optimization method for a discrete manufacturing workshop, which comprises the following steps of: firstly, discretizing a target space of a discrete manufacturing workshop to reduce the solving difficulty of modeling of a three-dimensional RFID network layout optimization problem; Secondly, establishing a three-dimensional perception model of the RFID reader-writer under the condition of metal shielding, and defining constraint conditions required to be met by communication between the reader-writer andthe tag; And finally, based on a multi-target mixed particle swarm algorithm, solving the RFID network layout optimization model taking the label coverage rate, the mutual interference rate among thereaders and the deployment cost as optimization targets to obtain the deployment position and direction of the RFID readers in the discrete manufacturing workshop. The method has important guiding significance for the deployment of the RFID equipment in the discrete manufacturing workshop, and the overall performance of the RFID system in the workshop can be greatly improved.

Description

technical field [0001] The invention belongs to the field of radio frequency identification, and in particular relates to a three-dimensional radio frequency identification network layout optimization method for discrete manufacturing workshops. Background technique [0002] The discrete manufacturing workshop has the characteristics of complex product structure, numerous parts, long production cycle and large workshop area. In order to achieve dynamic collection of production data in discrete manufacturing workshops, real-time monitoring of manufacturing processes, and efficient backtracking of product quality, RFID technology is applied to discrete manufacturing workshops. In order to control the cost of RFID hardware and expand the range of RFID perception, UHF passive RFID tags, multi-channel readers and directional circularly polarized antennas are mostly used to form the hardware bottom layer of the RFID system. [0003] At present, with the continuous expansion of th...

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Problems solved by technology

The traditional two-dimensional radio frequency identification network planning method idealizes the location of RFID tags on the same plane, without considering the difference in height of the tags; at the same time, there are a large number of fixed metal structures in the discrete manufacturing workshop, such as brackets, workbenches, etc., and the radio frequency signal It is difficult to penetrate metal obstacles, which will have a great impact on the establishment of communication between RFID readers and tags

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