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Internet of Things Success Stories Series #3 Open IoT Smart Campus 1. Introduction One of the most widely used definitions for a Smart City is outlined by Bakici et al. (2013), who defines smart cities as “cities that utilize information and communications technologies with the aim to increase the life quality of their inhabitants while providing sustainable development”. This definition shows that ICT plays a key role in adapting a city to the contemporary needs of its citizens. Many ICTbased systems have been proposed and tested in order to solve a wide variety of issues and problems within cities, such as traffic management, air quality improvement, public illumination optimization, efficient infrastructures, energy use, etc. (Domingo et al. 2013). However, the conception and implementation of most of those systems have been primarily focused in the use of high-innovative technical solutions rather than in solving a real problem demanded by the citizenship (Skouby & Lynggaard 2014). In this paper, we present the CEI Montegancedo Open IoT Smart Campus project, which has been conceived as a holistic solution to improve the quality of life and comfort of the campus staff, i.e. satisfying their different needs and demands. The project is divided in four different solutions. The first one has been driven by the insecurity and accident prone situations caused by the low luminosity on sidewalks: an outdoor smart lighting system which controls illumination in function of luminosity level and motion detection. Secondly, motivated by the huge amount of energy consumed at the Centre for Plant Biotechnology and Genomics, an energy monitoring and management system has been developed, which includes a full equipped growing module. Thirdly, in order to reduce energy consumption and discrepancies surged around rooms temperature, a building energy management system to control HVAC (Heating Ventilating and Air Conditioning) and set temperature in function of indoor temperature, humidity, luminosity and presence sensing (among others) has been deployed. Finally, trying to increase users’ awareness and encourage the introduction of smart metering and control technologies into the residential market, a home energy management system has been developed and tested. The four systems have been successfully implemented, achieving high energy consumption reductions, satisfying as well problems and needs demanded by the campus users. All the pilots are technologically based on the BatNet solution, a 6loWPAN (IPv6 over Low power Wireless Personal Area Networks) based sensor and actuator network designed and developed by CeDInt-UPM researchers that provides wireless connectivity between physical systems and the internet (Caffarel et al. 2013). 2. Open IoT Solution CeDInt solution for Open IoT comprises a sensor network (BatNet) and a management platform in Cloud (BatMP). BatNet BatNet connectivity is based on a network of nodes with mesh topology that communicate through a Std. IEEE802.15.4 Physical Layer under a 6LowPAN over IPv6 to implement Link and Network Layers. The Transport Layer is UDP and the Application Layer is based on CoAP (Constrained Application Protocol). Information encryption is done accordingly with AES-128. The mesh topology has auto-configurable and autorouting capabilities. Connection to Internet is done through a border router that can group up to 200 nodes. The implementation has been done using Open Hardware, resulting in a modular and inexpensive design. The devices firmware is Contiki OS. BATLink BATDimmer BATHop BATMeter Figure 1. BatNet network and devices BATPlug BATSense BATStreetLighting Internet of Things • Success Stories 52 SERIES #3 - November 2015
Internet of Things Success Stories Series #3 Open IoT Smart Campus The strength of this solution relies on a robust communication network where connectivity among nodes is guaranteed. Nodes are plug-and-play, so, the deployment of the network infrastructure is easy to do. Nodes are designed using a modular architecture in such a way that different sensors and actuators can be easily integrated in nodes, obtaining different types of nodes IPv6 compatible. BatMP BatMP is a software platform or middleware designed for the monitoring and management of infrastructures and for the provision of services within a Smart City. This gateway establishes a service oriented architecture which assures the system’s scalability and follows the OSGi (Open Services Gateway initiative) specification. This way, BatMP offers a simple and well defined method to expose and invoke these services, which makes the interaction between different proprietary systems or third parties easier. One of the aims of BatMP is to offer a set of APIs so future developers could use these APIs to create different kinds of applications which can run on this platform and several drivers for the existing or new technologies. Every BatMP gateway is connected with a central server where all the measures from the electronic devices connected to this gateway are stored. The applications developed over BatMP will have access to data of a certain client which are store don the central server, so these data can be visualized and used to make intelligent decisions, through a series of rules or algorithms, with respect to the way those electronic devices act. In the next figure the structure of BatMP gateway and the central server is shown. Figure 2. BatMP architecture Internet of Things • Success Stories 53 SERIES #3 - November 2015
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Page 67: Series 3 November 2015 Editor : Phi

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