Distributed control for building automation with smart contracts

• Autor(a) principal: Lopes, Bernardo Chastre
• Data de Publicação: 2022
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10071/27517
• topic: Smart contracts; Internet of things; home automation; Contratos inteligentes; internet das coisas; Domótica

There are some interesting, centralized solutions for managing smart buildings, whether opensource or not. However, there is the need for some of these functions to be decentralized. Decentralization calls for consideration of security and trust standards that enable a coordinated approach. This dissertation aims to fill the knowledge and research gaps that still exist in this field. As such, the objective of this dissertation is to integrate smart contracts with an IoT platform for distributed control in smart buildings. The proposed solution aims to grant control of a function or the monitoring data in a given smart building to an external entity that can manage this service. To achieve the goal of this dissertation, an integration was proposed with opensource technologies. Two of these technologies are Daml and OpenHAB, and the created SCIApp application enables their communication. Functional tests, confirm that it is possible to achieve the proposed integration. Response time in the order of seconds was obtained, with an average value of 4061ms. Performance tests, allow to verify the response time for different loads. Results confirm that response time remains constant when new contracts are created every 20s. For the remaining frequencies, the response time increases. This dissertation leads to the conclusion that it is feasible to integrate smart contracts with IoT to control and manage functions of intelligent buildings. By analyzing the tests conducted on the developed system, it was observed that the control is possible for operations that do not require a real-time response time.