| On the basis of comparison and analysis of the function and performance of the intelligent gateway for Internet of things at home and abroad,Identify the capabilities needed to develop an intelligent gateway for an industrial networking.On the basis of a large number of conparative studies.the technical framework and kev technologies adopted in this project are proposedBased on the analysis of the function of gateway,the hardware platfonn of the gateway is confirmed,and the embedded ARM development platfonn based on TI am3352 processor is adopted.And the operating system adopts Linux.Fir:mware is the core of the gateway business function,it consists of three parts:protocol analysis system,gateway intermal management system and data cache system.The protocol connection and resolution system is mainly responsible for protocol access and analysis.and abstracts each protocol and processing process as "connector" concept,and adopts Agent development technology,by designing the MQTT connector,the subscription and publishing function of the gateway is realized.The data cache system solves the problem of "connector" communication and data cache inside the gateway by transplanting Redis memory database,and the semantic expression of the data is carried out in JSON format.Gateway intermal management system to achieve gateway management,including IP configuration,log management,syste:m operationsFinally,functional testing and performance testing of the gateway,test results show that the gateway function to meet the needs of the basic performance standards,fully verify the feasibility of the design. |
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