Digital Twin – Modeling Interrelated Devices
Figure 2 Modeling digital twin for a water pump station
Let’s create the basic JSON
representation for each device
and then the pump station.
First, the JSON digital twin
representation for the Tank
device (Figure 3).
As can be seen, the JSON
representation of the tank has
some static properties (tags) that
rarely change (name, location,
tank height, etc.), commands
(desired) none for the tank and
some
telemetry
properties
(reported)
like
outside
temperature,
water
level,
incoming water flow, etc. GUID#1
is a generated unique ID that
identifies this device.
Figure 3 Tank JSON Digital Twin model
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March 2018