Open IoT Ecosystem for Smart EV Charging

Many domains are trying to integrate with the Internet of Things (IoT) ecosystem, such aspublic administrations starting Smart City initiatives all over the world. Cities are becomingsmart in many ways: smart mobility, smart buildings, smart environment and so on. However, theproblem of non-interoperability in IoT hinders the seamless communication between all kinds ofIoT devices. Different domain specific IoT applications use different interoperability standards. These standards are usually not interoperable with each other. IoT applications and ecosystems therefore tend to use a vertical communication model that does not allow to share data horizontally across the different IoT ecosystems. In 2014, The Open Group published two domain-independent IoT messaging standards O-MI and O-DF aiming to solve the interoperability problem.In this article we want to describe the practical use of O-MI/O-DF standards in a mobile application for the smart city context, in particular for the Smart Mobility domain, electric vehicle (EV) charging use case. The proof-of-concept of the mobile application for EV charging was developed as a part of an EU (Horizon 2020) Project bIoTope.