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Table 2 MQTT messages by subscription topics

From: Converging IoT protocols for the data integration of automation systems in the electrical industry

Topic

Message

Device

Units of measurement

iotplatform/eiot/Test-Application/EIoT-Node-2-LoRaWAN102

{“voltage”:1.90}

EIoT LoRaWAN Node 2

[V]

iotplatform/eiot/Test-Application/EIoT-Node-4-LoRaWAN102

{“mean_current”:0.32,”mean_power”:38.42,”max_power”:39.26,”fire_detector”:0}

EIoT LoRaWAN Node 4

[A, W, W, Bool] respectively

iotplatform/eiot/Test-Application/EIoT-Node-1-LoRaWAN102

{“mean_current”:0.32,”mean_power”:38.42,”max_power”:39.26,”refrig_temp”:10.80,”freez_temp”:47.47,”door_state”:1}

EIoT LoRaWAN Node 1

[A,W,W,°C,°C, Bool] respectively

N/7c38665ac58c/system/0/Dc/Battery/Voltage

{"value": 52.909999847412109}

Battery Inverter/Charger Controller

[V]