OpenIoT: Open Source Internet-of-Things in the Cloud - Interoperability and Open-Source Solutions for the Internet of Things - page 18

Listing 1 illustrates the descriptor of a virtual sensor, which contains the location
and the

elds exposed by the virtual sensor. The descriptor includes the mapping
between a sensor eld (e.g., airtemperature) and the corresponding high-level concept

de ned in the ontology (e.g. the URI http://lsm.deri.ie/OpenIoT/AirTemperature ) .

After the sensor has been registered, the corresponding RDF triples (Listing 2) are
stored in LSM, and the sensor is available for discovery and querying from the upper
layers of the OpenIoT architecture. Data acquisition for each virtual sensor is achieved
based on wrappers that collect data through serial port communication, UDP