| With the popularity of Internet of Things applications,more and more IoT device management systems are used in various fields such as smart cities,smart agriculture,and smart homes.IoT device management systems are one of the most important components of the Internet of Things.Currently,all kinds of IoT device manage ment systems need to build their own access channels for network communications during the development process.There are two problems in this approach: different standards on device access and long development cycles;low performance index on access amount and network response time.This article analyzes and researches existing IoT technologies and cloud platform technologies,designs and implements a high-performance OneNET IoT device management system,leverages OneNET platform,unifies access standards,and shortens development cycles;on OneNET platform On the basis of further improving the management of system performance indicators.In this design plan,the management system is divided into a device subsystem and a user subsystem.The device subsystem mainly provides information management services for the underlying device entities and provides support for user subsystem operations.A communication protocol based on MQTT was designed for the specificity of the communication mode of the underlying device entity.The subscription/release mode provided by the protocol supports the release of one-to-many control messages and releases the coupling between applications,which can effectively reduce the network delay.In order to improve system stability,this paper introduces the idea of distributed deployment server.In order to improve system concurrency performance,this paper introduces load balancing strategy and message queuing mechanism.In the user subsystem design,its main role is to provide an easy-to-use management interface for system users through a graphical interface.This article uses Ajax technology to design a WebGIS-based Web site service system to provide users with device visualization services.Among them,the visualization service proce ss mainly involves the three processes of dynamic web page loading,node map generation,and release control commands,and realizes the purpose that the system user can monitor the operation status of the sensing layer nodes in real time.Finally,a test e nvironment has been built for the completed management system.The system meets the access requirement of 10,000 sensor nodes;the system can maintain stable operation for 24 hours,and the system network response time is about 1.1 seconds.Through the ana lysis of the test results,it is considered that the system has reached the expected goal.OneNET IoT device management system designed and implemented in this paper provides reference value for similar systems in the future,especially the standard unified IoT system. |
