| Summary: | In modern buildings, the intelligent building energy management system (IBEMS) faces several problems with its centralized architecture: the difficulty in the networking between end devices, the lack of flexibility, and the limited sharing of underlying information. To overcome these problems, this paper probes into the framework of the wireless sensor network (WSN), and designed a network model of the IBEMS. Next, the security of blockchain technology was fully examined, and a dynamic key management strategy was proposed based on the blockchain for the IBEMS. The feasibility of the proposed plan was verified through experiments. The experimental results show that the proposed plan reduces the data storage time and space of each sensor, and optimizes the control of the IBEMS. The research results provide a reference for setting up a safe and reliable IBEMS based on spatial distribution, and help promote blockchain technology in other scenarios of the UPIoT.
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