Building an Energy Monitoring System with ESP32 and MQTT

10.12.2024 - Engine: Gemini

Building an Energy Monitoring System using ESP32 and MQTT

Components

ESP32 development board
AC Current Sensors (e.g. SCT-013-000)
Voltage Sensing Module (e.g. ACS712)
MQTT Broker (e.g. Mosquitto)
Database (e.g. InfluxDB)
Visualization Tool (e.g. Grafana)

Sensors

AC Current Sensors: Detect current flow in AC lines. They are non-invasive and can be clamped around the wires.

Voltage Sensing Modules: Measure electrical voltage. They are connected in series with the power supply.

Setup

Connect the AC Current Sensors to the analog inputs of the ESP32.
Connect the Voltage Sensing Module to an analog input of the ESP32.
Set up the MQTT Broker and Database.
Program the ESP32 to acquire the sensor data and publish it to the Broker via MQTT.

Data Analysis

Data from the MQTT Broker is stored in the database and can be analyzed to:

Total Energy Consumption: Sum the readings from all AC Current Sensors.
Voltage Consumption: Sum the readings from all Voltage Sensors.
Power Factor: Ratio of real power to apparent power.
Energy Usage: Integration of current and voltage readings over time.

Visualization

Grafana can be used to visualize the data, including:

Real-time graphs of current and voltage readings.
Time series data of total consumption and energy storage.
Histograms and heat maps showing consumption patterns by time of day and day of week.

Conclusion

This system enables real-time monitoring and analysis of energy consumption. By collecting current and voltage data, valuable insights into consumption patterns can be gained and energy optimization measures implemented.