Abstract: The power and environment monitoring system of base station realizes the functions of the whole network base station power and environment monitoring and real-time alarm by constructing the base station intelligent monitoring unit on the underlying intelligent and non-intelligent devices.Therefore,the stability and safe operation of the po-wer and environment monitoring system is a prerequisite.However,as the number of base stations increases,the system in the central server architecture mode will show problems such as increased load and traffic overload,and the many-to-one mode is prone to DoS.Security issues such as attacks and data breaches.In addition,in multi-user mode,the existing system mode cannot achieve fine-grained access control.Aiming at the above problems,combined with the unique advantages of blockchain technology in distributed architecture,this paper proposed a double blockchain power and environment monitoring system of base station architecture based on improved PBFT consensus algorithm to solve the centralization,security,expansion and other.of the existing system problems.Specifically,the system is a hierarchical architecture information system,and each layer maintains a blockchain.the system is a dual-chain blockchain system that is maintained and shared by multiple nodes.One is responsible for the flow of cross-domain information in the form of a league chain,and the control of the authority,the other is responsible for the access control of the base station device and the flow of the base station transaction information in the form of a private chain.And achieves fine-grained access control of the device through PKI system and the key management system,and the improves block header to store the permission information.Finally,the results show that compared with the existing traditional system,the system of this paper proposed has certain advantages of multi-center service,anti-DoS attack,user-based fine-grained rights management,high degree of information encryption and good scalability through the qualitative analysis.

Key words: Access control, Blockchain, Distributed system security, PBFT consensus, Power and environment monitoring system of base station