Towards Blockchain Based Architecture for Building Information Modelling (BIM)

Building Management Systems (BMS) is a set of software and hardware tools that enables the monitoring and the control of building's mechanical and electrical equipment. These systems take advantage of Internet of Things (IoT) and Information Technology (IT) domains to efficiently enhance the buildings management. Blockchain technology is a new emerging technology that has attracted many researchers this last years. Basically, it has many applications in the field of cryptocur-rency, finance and insurances fields. However, these last years, blockchain has known other applications beyond cryptocurrency domain, such as the IoT. In this paper, we shed the light on one specific application of blockchain technology to assist the design of efficient BMS. We propose an hierarchical architecture composed of IoT, fog and cloud layers where the blockchain is integrated on the different layers to enhance the security of the whole BMS systems. We show the main advantages of applying blockchain technology in BMS systems and how our architecture outperforms the existing architectures in terms of low latency, security and privacy.