Gateway

Technological

Components

• Network-compatible microcontroller

  • RaspberryPi

Functionality

The gateway is used to link the UUIDs with the corresponding RDF-schema. For that matter all the single sensor-boards are connected to the gateway with a USB-cable at the beginning. If the sensor-board is in setup mode, it is listed in the web interface to start the initialization afterwards.

Initialization: At the beginning of the initialization it will be checked, if the connected sensor-board has a UUID. If not, the UUID will be generated by the gateway and transferred to the sensor-board. After that the RDF-schema is requested by the sensor-board, linked to the UUID and saved on the gateway. The gateway is transferring the valid bridge-configuration to the connected sensor-board afterwards.

Data transfer The bridge is requesting the linked RDF-schema of the UUID at the gateway continuously.