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Sensors 2016, 16(11), 1840;

Complex IoT Systems as Enablers for Smart Homes in a Smart City Vision

Center for Communication and Information Technologies Aalborg University Denmark; A. C. Meyers Vænge 15, 2450 Copenhagen SV, Denmark
Author to whom correspondence should be addressed.
Academic Editors: Andrea Zanella and Toktam Mahmoodi
Received: 15 August 2016 / Revised: 26 October 2016 / Accepted: 28 October 2016 / Published: 2 November 2016
(This article belongs to the Special Issue Smart City: Vision and Reality)
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The world is entering a new era, where Internet-of-Things (IoT), smart homes, and smart cities will play an important role in meeting the so-called big challenges. In the near future, it is foreseen that the majority of the world’s population will live their lives in smart homes and in smart cities. To deal with these challenges, to support a sustainable urban development, and to improve the quality of life for citizens, a multi-disciplinary approach is needed. It seems evident, however, that a new, advanced Information and Communications Technology ICT infrastructure is a key feature to realize the “smart” vision. This paper proposes a specific solution in the form of a hierarchical layered ICT based infrastructure that handles ICT issues related to the “big challenges” and seamlessly integrates IoT, smart homes, and smart city structures into one coherent unit. To exemplify benefits of this infrastructure, a complex IoT system has been deployed, simulated and elaborated. This simulation deals with wastewater energy harvesting from smart buildings located in a smart city context. From the simulations, it has been found that the proposed infrastructure is able to harvest between 50% and 75% of the wastewater energy in a smart residential building. By letting the smart city infrastructure coordinate and control the harvest time and duration, it is possible to achieve considerable energy savings in the smart homes, and it is possible to reduce the peak-load for district heating plants. View Full-Text
Keywords: IoT; cloud-of-things (CoT); smart city; smart home; wireless sensor network (WSN); energy harvesting IoT; cloud-of-things (CoT); smart city; smart home; wireless sensor network (WSN); energy harvesting

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Lynggaard, P.; Skouby, K.E. Complex IoT Systems as Enablers for Smart Homes in a Smart City Vision. Sensors 2016, 16, 1840.

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