How Researchers are using the Paraimpu Platform: a Use Case


Some researchers of CRS4 Information Society group - a research centre based in Sardinia (Italy) - have chosen Paraimpu among several other Internet of Things platforms to carry out  their work and experimentation focused on Semantics & IoT. This work is part of the research and development of various projects in the field of Smart Cities.

Thanks to the Paraimpu workspace and the new APIs, Cristian Lai and Antonio Pintus built a dynamic and scalable Semantic Sensor Network system, based on the platform and supporting the following features:

  • Geographically distributed sensors, grouped in stations, are able to form ad hoc networking topologies; they not only send measurements data but also announce themselves and their presence in the network;
  • Raw data sent by sensors is semantically annotated and on-the-fly enriched by Paraimpu as it flows through the system, using Semantic Web formats;
  • A real-time, websocket-based web application shows an (always) updated interactive bubble view of the network: stations, their sensors and related measured data.


(click the image for a bigger version)


Cristian remarked: “thanks to the friendly and handy Paraimpu workspace, it was possible to quickly prototype and deploy the whole system, focusing on the semantic aspects of research and delegating to Paraimpu all the low-level, network operations. The powerful, integrated rule-based Javascript engine inside the platform allows to transform data in real-time: from raw measurements and packets to structured Linked Data, in compliance with Semantic Web standards of W3C; thanks to Paraimpu APIs, then it is stored in a dedicated Knowledge Base”.




This research actually shows how Semantics, applied to IoT, can contribute to the growth of advanced systems with concrete applications to many fields, including IoT Interactive Systems, Ambient Intelligence, Domotics and Smart Cities.

Raw data sources used in the experimentation includes several physical sensors deployed at CRS4 buildings along with other data sources, like weather streams and traffic information, queried in near real-time thanks to open-data provided by Cagliari Municipality Government and released under the IODLv2.0 License.

Semantics allows to describe stations, sensors and observations and to face the issues related to disambiguation. Linked Data paradigm, contributes  to create a network of standard-based, machine-readable data across the Web of Data providing a means of integrating data at large scale.

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