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Figure 13: Data collection of common property measurements with the unified SCHub API
5.2 Sensor measurement data discovery
The sensors deployed in a SC can be of different types and manufacturers, while they measure
physical properties in a fragmented and incomparable way, regardless of whether the measurements
concern the same property/variable (e.g., temperature, humidity). The SCHub will enable the unified
discovery of sensors that provide data about requested specific properties, and the collection of
the corresponding data.
5.2.1 Description
The SCHub API provides an abstract method that allows the unified data collection, which is
produced by sensors installed in an SC. Each event that is measured by a sensor is described in
the SCHub events’ taxonomy with a specific schema. The SCHub layer transforms the messages
produced by sensors to SCHub events. When a client of the SCHub API requests access of a specific
event of the taxonomy, the collected data are compliant with this schema, regardless of the schema
used by the sensor manufacturer.
When a client seeks for data of a specific property, the SCHub will provide a list of devices that
provide this data, regardless of the device types or their manufacturers.
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