Paper Conference

2020 Building Performance Analysis Conference and SimBuild co-organized by ASHRAE and IBPSA-USA


Design and Development of a Decentralized and Distributed IoT Home Monitoring System Within a DC Nanogrid

Jonathan Ore, Eckhard A. Groll
Purdue University, West Lafayette, IN

Abstract: The advent of microcontroller applications within the Internet of Things (IoT) affords significant opportunities to analyze and improve energy efficiency, occupant comfort, and thermal distribution within a given environment. IoT devices can operate autonomously, collecting valuable data ranging from temperature, humidity, and air quality, to energy consumption and even behavioral patterns. When integrated into a framework using robust communication protocols, such as message-oriented middleware (MOM), additional features including hot-swapping, redundancy, and energy consumption can also be managed. This paper studies the development of such an IoT network operating within a unique residential setting. The home under study is a 2-story 1920's era home, housing three graduate students, who live and work in it as a living laboratory". The house is currently undergoing a total electrical transformation to retrofit devices and appliances to operate on direct current (DC) power, which is supplied through a DC nanogrid infrastructure. Networked sensors and devices can leverage this DC grid through the use of technology such as Power over Ethernet (PoE), providing simultaneous power and data transfer over the same medium. IoT devices within this network can collect data across a wide range of sources, and utilize sensor fusion to provide insights into building metrics and thermal characterization. This design can also serve as a platform for future energy-saving modifications efforts and automated building controls.
Pages: 267 - 274