Discrete workshop logistics information online obtaining method based on radio frequency identification technology

Abstract

The invention discloses a discrete workshop logistics information online obtaining method based on radio frequency identification technology, which includes: 1, assigning operation task, and binding the operation task-material-radio frequency identification (RFID) label and station-process-RFID reader-writer; 2, initializing a logistics status matrix and a logistics status change matrix; 3, obtaining RFID initial data at the moment of tn; 4, converting the RFID initial data into logistics simple events; 5, collecting the logistics simple events into logistics complicated events; 6, obtaining logistics status change matrix at the moment of tn through the logistics complicated events; 7, generating logistics status matrix at the moment of tn; 8, obtaining logistics information at the moment of tn according to rank-sum elements of each block matrix in the logistics status matrix; and 9, setting the logistics status change matrix into a null matrix, going to the step 3, and obtaining logistics information at the moment of t(n+1). The discrete workshop logistics information online obtaining method based on the radio frequency identification technology achieves real-time synchronization of material flow and information flow in a discrete workshop.

Description

Technical field [0001] The invention relates to an online acquisition method for discrete workshop logistics information, in particular to an online acquisition method for discrete workshop logistics information based on radio frequency identification (Radio Frequency IDentification, RFID) technology. Background technique [0002] There is a more common "information fault" phenomenon in discrete workshops, and the fault of logistics information is particularly prominent. In order to realize the real-time synchronization of material flow and information flow in discrete workshops, more and more researchers are beginning to pay attention to the online acquisition of logistics information in discrete workshops. The main methods or technical means of acquisition are: paper cards, barcodes and RFID Technology etc. Among them, paper cards have shortcomings such as easy damage or loss, time-consuming entry, error-prone, low accuracy, and non-real-time data acquisition. Barcodes have sh...

AI Technical Summary

Problems solved by technology

Among them, paper cards have disadvantages such as easy damage or loss, time-consuming input, error-prone, low accuracy, and non-real-time data acquisition, etc. Barcodes have disadvantages such as limited reading and writing distance, need to be read visually, small data capacity, and only support batch tracking, etc. , while RFID technology overcomes the shortcomings of paper cards and barcodes, and has non-contact and batch reading, anti-fouling (such as anti-oil, dust, etc.), strong environmental adaptability (such as high temperature resistance, high humidity, etc.), Support single product tracking, recyclable reuse, writeable data and other outstanding advantages, so more and more discrete manufacturing enterprises apply RFID technology to workshop logistics information acquisition

[0003] The main difficulties in applying RFID technology to the acquisition of logistics information in discrete workshops are: the raw data automatically generated by RFID readers on each station has a huge amount, the time interval for generating data is short, and the semantic level is low, which is difficult to be detected by the upper layer. Systems (such as enterprise resource planning system (Enterprise Resource Planning, ERP), supply chain management system (Supply Chain Management, SCM), warehouse management system (Warehouse Management System, WMS), etc.) are directly applied, and it is difficult for general managers to understand , resulting in the phenomenon of "excessive data and insufficient information (or lack)". The more difficult problem is that if a large amount of RFID raw data cannot be effectively processed, not only will it be impossible to achieve the goal of online acquisition of logistics information, but it will also lead to Occupies a large amount of data storage space, and frequent data writing will also greatly increase the I / O (input / output) overhead of the database management system, bringing additional system processing burden

Images