Inherited from industry 4.0 domain, digital twin concept will represent an important step forward in what we have understood as smart city concept. In this paper we present our ongoing work on extending a monitoring smart city middleware to a digital twin platform for smart cities. The reader will learn some key issues of this new concept in the field of smart cities including some open questions that need to be investigated about the user interaction with digital twin concept.

This article presents an Internet of Things architecture for Smart Homes that specifically targets service composition and reconfiguration as enablers for the actuation and smart behavior capabilities. To this end, the main challenge that has to be addressed is the support to a seamless integration, composition, and reconfiguration of Internet of Things objects. Two enabling technologies are proposed here: a planning strategy based on a common-sense reasoning approach for service composition and a virtual-network protocol for Inter-Domain Messaging. The planner will identify the services that, properly connected, will cater for arisen, and therefore, unexpected needs. The virtual-network protocol will provide the support for this interconnection to take place in a transparent and orthogonal manner. This is particularly important to enable autonomous systems to instantiate composite services. To demonstrate the capabilities of the resulting framework, two use cases are presented, which under real circumstances demonstrate the potential of the proposed approach.

The Internet of Things (IoT) paradigm envisions a world of interconnected objects in which every object or thing can be univocally addressed and accessed, independently of its inherent technology and location. To the date, most of the state-of-the-art solutions proposed to realize the IoT vision employ a cloud-based approach. This means that, independently on where objects are physically located, their interconnection relies on a cloud-based solution. In a daily life situation it is like requesting a call-center operator to get us in contact to someone that is nearby us. Common sense tells us that it is not only simpler, but more efficient, to directly talk to him/her minimizing delays, failing points, and unnecessary intermediaries. This paper presents a protocol for IoT, named IDM (Inter-Domain Messaging), intended to overcome the limitations of cloud-based solutions for IoT. The IDM approach consists in offering an abstraction layer upon which different technologies can interact in a seamless and efficient manner. This paper also provides an experimental validation consisting in the implementation of a prototype interconnecting five different domains, with technologies like ZigBee, Bluetooth, RS485 or WiFi.

In this paper a Commercial-off-the-Self (COTS) platform for Unmanned Aerial Vehicles (UAV) is presented. The goal of this work is to provide the industry with a flexible and efficient solution to smooth the integration and heterogeneous development challenges in this scenario. On one hand, the proposed platform enables transparent and efficient interaction with the control station implemented in ZeroC Ice. On the other hand, the proposed approach abstracts both embedded and desktop software developers from the platform details. A customized hardware-software layer assures a high-level, efficient reliable communication while a complete tool-chain automatizes the generation of application specific code, reducing the development time.

Sensor networks are becoming an essential part of ubiquitous systems and applications. However, there are no well-defined protocols or mechanisms to access the sensor network from the enterprise information system. We consider this issue as a heterogeneous network interconnection problem, and as a result, the same concepts may be applied. Specifically, we propose the use of object-oriented middlewares to provide a virtual private network in which all involved elements (sensor nodes or computer applications) will be able to communicate as if all of them were in a single and uniform network.

Sensor networks are becoming an essential part of smart environments. However, most previous systems rely on ad-hoc mechanisms to access the sensor network from the enterprise information system. We propose the use of object oriented middlewares to provide a Virtual Private Network in which all involved elements (sensor nodes or computer applications) will able to communicate as if they all were in a single uniform network.

Resumen En este articulo se presenta la plataforma IcePick, un entorno de desarrollo software que facilita la creacion de aplicaciones en redes de sensores y actuadores para infraestructuras y entornos inteligentes. Su principal ventaja es que la programacion de los dispositivos de bajo coste se realiza desde un alto nivel de abstraccion, agilizando el proceso de desarrollo. Ademas, la instalacion de los dispositivos es transparente en un entorno inteligente ya desplegado.