OPC UA over MQTT：一种可扩展的解决方案.pdf

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1、OPC Day International 2023OPC UA over MQTT:A scalable solutionOPC Day International 2023OPC UA over MQTT:A scalable solutionWhat is OPC UA over MQTT Additional transport for the OPC UA eco-system MQTT 3.1.1+MQTT 5.0Why OPC UA over MQTT Benefit of using OPC UA for the communication Benefit of using O

2、PC UA for data modelling Benefit of standardizing architectures on OPC UA Transformations with or without OPC UA Security Application ApplicationScaling Scaling vs.efficiency Free(data)topic tree structure JSON vs.UA Binary Use cases Automatic publisher discovery Discovery of dataImplementation Effo

3、rt Simple for UAFX enabled application2OPC Day International 2023OPC UA over MQTT:A scalable solutionOPC Day International 2023OPC UA over MQTT:A scalable solutionNo project specific development neededNo transformation of data or meta data neededStandardized and interoperable system architectures Ac

4、cess to semantical information Standardized onboarding of devices Application/Device registration/discovery Certificate Management Security Configuration Application configuration User Role configuration Exchangeable applications/vendors Alias NamesOPC Day International 2023OPC UA over MQTT:A scalab

5、le solutionOPC UA values provide Value Status Code Source Timestamp Server TimestampMeta information Semantical meaning of data Engineering Units Physical and process relation of data Value:120 CStatusCode:GoodSourceTimestamp:2023-06-18 14:00:21.200(UTC)ServerTimestamp:2023-06-18 14:00:22.200(UTC)Re

6、lationship:Temperature in Car Chassis Breakes FRValue:120Timestamp:2023-06-18 14:00:21.200(MESZ)TransformationTransformationStorageOPC Day International 2023OPC UA over MQTT:A scalable solutionSpecific ModelsUse case specific modelsIndustry specific modelsDevice/machine specific modelsDeveloped with