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By using Linked-Data and the web-standard semantic interoperability should be achieved -
The goal is to demonstrate how already existing standards of the Linked-Data can be used for IoT -
To reach the largest possible target audience, everything should be easily implemented (and as cheap as possible) -
Throughout a modular setting it should be possible for everybody to use their own components -
An extensive documentation should make it as easy as possible for the target audience to get started
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Linked Data has already proven its feasibility as instrument for connection and integration of data in the web -
With Linked Data it is possible to semantically combine structured data in order to describe their relationship -
At the moment it is difficult to bundle the different ways of broadcasting of each sensor and connect them with each other - The different sensors can be addressed only with great effort but it’s impossible at the moment to process unknown structures and types of sensor independently
- With the use of Constrained Devices their individual limitation has to be considered
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To make the modular setting possible, a library with abstract classes was built which can imported in the own project and run in Arduino -
The context which is used in the JSON-LD, is saved on the gateway -
The bridge is working as operator in order to use the consistent web-standards for the broadcast -
With a web interface the sensor’s initialisation and broadcasting-configuration is enabled -
The linking between sensor and gateway is implemented throughout a web standard -
The bandwidth of the original payload (broadcast of the sensor’s data) is reduced through the transfer of the context at the linking -
The bridge is requesting the needed context at the gateway when broadcasting the sensor-data und is publishing the sensor’s value to the topic