What are edge nodes?
What are Edge Nodes?
Edge Nodes play a central role in modern Building automation and IoT architecture. They are devices or software solutions that collect and process data directly where it is generated, i.e. at the so-called "edge" of the network, close to sensors, machines, or controllers. The preprocessed and relevant information is then forwarded to central systems such as Eliona .
How do Edge Nodes work?
Edge Nodes are located physically or logically near the data sources, e.g. in buildings or industrial facilities. They collect measurement values and status information from existing devices, process them locally, and then transmit them via supported interfaces (e.g. BACnet, Modbus or MQTT) to Eliona.
Edge Nodes can:
cache data, to ensure secure and efficient transmission.
analyze and filter data, before it is forwarded.
In some cases even take on local control tasks (depending on the model).
Why are Edge Nodes used?
Edge Nodes are essential for enabling efficient, flexible, and scalable data processing in IoT systems. They offer numerous advantages:
Latency reduction: Data is processed locally, which minimizes delays.
Efficiency: Only relevant information is sent to the cloud or central platforms such as Eliona, saving network bandwidth.
Fast response times: Actions can be triggered directly at the source without waiting for central systems.
IT security: Sensitive data remains local and does not have to be fully transferred to the cloud.
Example: Use in building automation
An Edge Node is installed in a building and connected to existing HVAC systems (heating, ventilation, air conditioning) via Modbus connected. It collects data such as temperature, humidity, and energy consumption, prefilters it, and sends only the necessary information to Eliona. In Eliona, this data can:
Be visualized to analyze trends.
Trigger automations such as adjusting ventilation parameters.
Create alarms when threshold values are exceeded.
You can find more information about how and which Edge Nodes can be connected in Eliona in the next chapters: → Edge Nodes in Eliona → Set up Control Edge → Set up Gateway Edge
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