Design And Implementation Of Internet Of Things Management System Based On Blockchain

In recent years,the Internet of Things(IoT)industry has developed rapidly,and IoT applications have gradually penetrated into all aspects of people's daily life.However,due to the heterogeneity of the IoT and massive data,it is very difficult to share data among different organizations,which brings inconvenience to the value behind data mining and the collaboration of devices among different organizations.Blockchain is a technology that can establish trust between different participants.It does not rely on a single trust institution,and the data is managed by multiple parties,which can only be added and cannot be modified.This advantage is suitable for improving the existing architecture of the IoT.Based on blockchain,this paper studies the management of IoT devices and data sharing,and proposes an IoT management system based on blockchain.Firstly,we introduce the background and current situation of the research topic and summarizes the main research content.Secondly,it introduces the adopted technologies from the three aspects of IoT,blockchain and Hyperledger Fabric blockchain platform,and analyzes the principles and characteristics of these technologies.Then it studies the requirements of the IoT management system based on blockchain,designs the overall architecture of the system according to this requirement,explains its components,and successively describes the design scheme of the consensus algorithm,network topology,ledger,chaincode,device side and management system.After that,the implementation of each module is completed according to the designed scheme.Finally,the function and performance of the system are tested,which proves the feasibility of the system.