Research And Application Of Double Middleware In Multi-PaaS IoT System

In recent years,the Internet of Things technology has been widely used,and people's production and life have become more efficient and convenient.With the rapid development of 5G technology,the Internet of Things system uses multiple PaaS platforms to increase the level of intelligence and reduce development costs,which has broad development prospects and application value.However,traditional Io T middleware is difficult to solve the interaction problem between the system and multiple PaaS platforms,and has become a bottleneck restricting the development of multiple PaaS Io T.Aiming at the interactive characteristics of the Internet of Things system and the PaaS platform,this paper proposes a multi-PaaS Internet of Things system dual middleware model and applies it to the new energy vehicle charging pile management system.The main work of this article is as follows:(1)Analyze the traditional unilateral structured Io T middleware.From the perspective of data communication,PaaS service invocation and PaaS service selection,a multi-PaaS Io T dual middleware model(MPO-DM)is proposed.The model's architecture,functions and interaction mechanisms are elaborated in detail.(2)Analyze the defects of the traditional fixed-length data item device communication protocol in MPO-DM,and design a dual middleware unified communication protocol(DMUP)based on variable-length data items,so that the terminal-side middleware realizes the device protocol and multiple An efficient conversion of a PaaS platform protocol,and enhance the system's robustness against PaaS protocol changes.The test results show that the DMUP protocol has low conversion complexity and high communication efficiency.(3)Study the problem of multiple PaaS service selection faced by dual middleware,comprehensively consider the needs of terminal equipment and PaaS service performance,model the PaaS service request with QoS preference of terminal equipment,and propose a dual middleware PaaS service based on this model Select the algorithm(DMPS)and use the utility evaluation strategy to load balance the PaaS service.The test results show that the DMPS algorithm has high selection accuracy and load balancing capability.(4)Based on the actual needs of the intelligent development of new energy vehicle charging facilities,based on the proposed MPO-DM model,a 5G multi-PaaS Io T charging pile management system was designed and implemented,and the system's function demonstration and performance test were passed To verify the feasibility and effectiveness of the dual middleware model.