Semantic Gateway Based Manufacturing Execution System Reconfiguration Architecture&Key Technologies Research

With the development of information technology and the implementation puttinginto application firmly, there exist more and more application systems in manufacturingenterprises with wide coverage. Moreover, because of the phased implementation ofinformatization which deepens the isomerism among information systems, theenterprises are generally faced with issues of information integration among differentsystems. In addition, the continuous development of enterprises requires informationsystems to quickly adapt changes in business, which puts forward higher requirementsto the flexible integration among systems.Faced with increasingly complex enterprise application needs, as the current mainsolution, semantic technology has been extensively studied with a view to leveragingsemantic technology to realize intelligent understanding and automating betweenheterogeneous manufacturing systems, reduce the complexity and cost of informationsystems, and improve the adaptability, which mainly represented by the ontology.However most current research of ontology is semantic theory, its system is complex, aswell as shortcomings, the induction of ontology structure is difficult to draw, ontologydefinition lacks a common industry standard, so the engineering realization of semantictechnology is less, and has trouble in low complexity practical application.Based on the current integration technologies, aiming at the reconstruction issuesfacing the current discrete manufacturing execution system, a reconfigurable integratedapproach for discrete manufacturing execution system based on semantic gateway isproposed, combined with the concept of semantic gateway, to achieve these goals thatdiscrete manufacturing execution system is able to dynamically adjust the internallogical structure by business demand and integrate a large number of internal andexternal information systems, thus meeting the comprehensive reconstructionrequirements of "fast, flexible, loosely coupled, highly flexible, low cost" and clearingthe semantic heterogeneity among different systems.Firstly, this dissertationpresents a discrete manufacturing execution systemsintegration reconfigurable architecture based on semantic gateway, thereconfigurationsource ofdifferent enterprises, aspects of the production, businessintegration and manufacturing environment are studied, the content of thereconfigurationfrom the user interface, business logic, systems integration and systemsemantic are studied, put forward the multidimensional reconfigurationtarget system, and gives an integrated reconfigurable framework for discrete manufacturing executionsystem based on semantic gateway.Secondly, based on semantic gateway, the implementation methods are researchedby means of business entities, business logics and systems integration layer. Throughthe split of business entities and business logics, combined with configuring timecompilation strategy, the definitions of business entities and business logics realizeintegration reconfiguration; through the dynamic injection between business entities andbusiness logic interfaces, the integration relationships between entities and logics arereconfigured; through the interception and proxy of business interface, the businessimplementations can be reconfigured.Thirdly, based on the analysis of the database metadata, configure semanticannotations and register data field concepts, configure data monitoring operatingaccording to the application needs of information integration, generate data changecapture triggers and deploy them on manufacturing system databases. Then configuretrigger conditions of integration behavior for data change messages which captured bysemantic gateway by data change status, and configure their data projection and dataoperating based on the integration needs of different information systems. Finally, thesemantic gateway process concept semantic mapping and distribute integrationmessages to information systems, application integration proxy can realize datasynchronization integration.Fourthly, based on the analysis of services metadata and registration ofheterogeneous manufacturing services in semantic gateway, realize centralizedmanagement of manufacturing service. And then on semantic heterogeneous problemsfor manufacturing service parameters, establish semantic mapping relationship betweensemantic gateway concept standard and integration interface parameters, implementparameters semantic understanding and exchange. Finally, provide a stable Web Servicewhich has a single xml input parameter to call manufacturing services, keep semanticstable for services interfaces, and achieve unified access to service implementations byintegration adapters, improve the reliability of services through flexible calling servicesbetween multiple implementations.Finally, developed reconfigurable MES prototype system and related enabling tools,combined with the actual business operations and system integration needs of enterprise,application verification was carried out and achieved good effects.