Smart Current Metering with Arduino PLC

Monitoring the current consumption
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Industrial controller for Monitoring Solutions

This project is designed to measure the current consumption in a company using a current sensor. Through a database in the Ethernet controller Arduino itself, it is possible to know the consumption statistics for medium and long-term tracing and even stop the current in case they exceed the allowed limit.

The information can be accessed remotely, through a VPN connected to our MQTT server.

In the company, a Panel PC based on Raspberry Pi will monitor the results in graphic form.

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PLC Arduino for monitoring

PLC Arduino and smart current metering

M-Duino PLC Arduino for automation


The current sensor is located at a strategic point of current flow.

The data is processed in the industrial Arduino PLC and it is sent to the Panel PC, where the database is located.

In the Panel PC, there is also a broker server (MQTT) responsible for receiving and sending data between the industrial PLC based on Open Source and the Panel PC.

To monitor the data, Node-Red has been used.

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The main points to achieve are as follows:

  • Accuracy in the measurement.
  • Taking of measurement is completely automated and involves no humans, reason why it is effective against reading errors.
  • Fully automatic measuring and control of electrical energy cutting and pre-cutting from the control centre.
  • Data storage, event log, lack of voltage and current. With this feature, notifying or complaining  about lack of energy would not be necessary for the final consumer  since the team immediately warns the centre.
Smart Current Metering with Arduino PLC

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