Smart electricity measurement device

Proposed and Directed by Dr: Saad KHADAR 

Done by :  RABHI Nadjoua, MISSAOUI Isra Oumaima, AGGOUN Hanane Aya.

Summary

The concept of a smart electricity meter has gained significant popularity worldwide in recent years. Traditionally, you need to go to the meter reading room and take down readings. Thus, monitoring and keeping track records of your electricity consumption is a tedious task and inconvenient. In addition, at the end of each month, many of us get worried about the high electricity bill and we have to look at the energy meter once in a while. But what if we can monitor our electricity uses from anywhere in the world.  In this project, we will create a multi-function smart electricity measurement device based on an ESP32 microcontroller and the Blynk application on mobile. The smart electricity measurement device shows the real-time value of voltage, current, power consumption, and power factor. It also shows the value of total energy consumption in kWh as well as electricity costs in dinars, thereby saving time and money.

Working Explanation

We created a multi-function smart electricity measurement device based on the best current and voltage sensors. By using the ESP32 microcontroller and Blynk apps, we can measure voltage, current, power, and total energy consumed in kWh. The readings will be sent to the Blynk app and displayed on a dashboard accessible from any location. If the bills are not settled, the consumer's power will be disconnected remotely.

Suggested Device Functions

This proposed smart electricity measurementdevice does the following tasks:

1. Calculates the estimated cost of electricity consumed based on a predefined cost per kWh, allowing the user to monitor electricity expenses.
2. Utilizes a Blynk Server to visualize the voltage, current, power, power factor, energy consumption, and cost.
3. Remote power disconnection in the event of delayed payment of due invoices.
4. In case of power outages, the energy meter data will be stored in the ESP32's EEPROM and retrieve the energy consumption (in kWh), ensuring the persistence of the data.

Materials Required

To create a smart electricity measurement device, we need following materials: ESP32 WiFi Module, ZMPT101B AC voltage sensor module, SCT-013-030 AC Current sensor module, 1-Channel Relay Module, 2-Resistor 10K Ω, Resistor 100 Ω, Capacitor 10uF, and PCB Board.

As for the Software we used: Fritzing, Arduino IDE, and Blynk  

Block Diagram

The image here shows the block diagram for the multi-function smart electricity measurement device using ESP32. The design was created using Fritzing software.

Blynk Dashboard

To monitor the electricity measurement device data from ESP32 microcontroller, we need to set the Blynk Dashboard. Here we will display the energy measurement device data on the mobile app. We need to create Virtual Pins for voltage, current, power, power factor, energy Consumption, cost, and load control. The table shows that each parameter is measured with a different virtual pin (V0 to V6).