ARDUINO CODE FOR ZMPT101B AC VOLTAGE SENSOR CALIBRATION FOR THREE PHASE POWER SUPPLY VOLTAGE MEASUREMENT

This video shows the Arduino programming used in calibration of you ZMPT101B for three phase power supply voltage measurement

ARDUINO CODE DESCRIPTION 

#include <Filters.h> //Easy library to do the calculations

#include <SPI.h>     //Libraries for display

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

float testFrequency = 50;                     // test signal frequency (Hz)

float windowLength = 40.0 / testFrequency;   // how long to average the signal, for statistist

int Sensor1 = 0; //Sensor analog input, here it's A0

int Sensor2 = 0; //Sensor analog input, here it's A1

int Sensor3 = 0; //Sensor analog input, here it's A2

float intercept = -0.04; // to be adjusted based on calibration testing

float slope = 0.0405; // to be adjusted based on calibration testing

float current_Volts1; // Voltage1

float current_Volts2; // Voltage2

float current_Volts3; // Voltage3

unsigned long printPeriod = 2000; //Refresh rate

unsigned long previousMillis = 0;

// Create lcd object of class LiquidCrystal_I2C:

LiquidCrystal_I2C lcd = LiquidCrystal_I2C (0x27, 16, 4);

void setup() {

  Serial.begin( 9600 );    // start the serial port

  lcd.init();

  lcd.backlight();

  lcd.setCursor(0, 0);

  delay(1000);

  }

void loop() {

  lcd.setCursor(0, 0);

  lcd.print("INNOVATIVE MIND");

  lcd.setCursor(0, 1);

  lcd.print("VOLT_PHASE 1:");

  lcd.setCursor(0, 2);

  lcd.print("VOLT_PHASE 2:");

  lcd.setCursor(0, 3);

  lcd.print("VOLT_PHASE 3:");

  

  RunningStatistics inputStats1;                //Easy life lines, actual calculation of the RMS requires a load of coding

  inputStats1.setWindowSecs( windowLength );

  RunningStatistics inputStats2;                //Easy life lines, actual calculation of the RMS requires a load of coding

  inputStats2.setWindowSecs( windowLength );

  RunningStatistics inputStats3;                //Easy life lines, actual calculation of the RMS requires a load of coding

  inputStats3.setWindowSecs( windowLength );

  while ( true ) {

    {

      Sensor1 = analogRead(A0);  // read the analog in value in phase 1:

      inputStats1.input(Sensor1);

    }  // log to Stats function

    {

      Sensor2 = analogRead(A1);  // read the analog in value in phase 2:

      inputStats2.input(Sensor2);  // log to Stats function

    }

    {

      Sensor3 = analogRead(A2);  // read the analog in value in phase 3:

      inputStats3.input(Sensor3);  // log to Stats function

    }

    if ((unsigned long)(millis() - previousMillis) >= printPeriod) {

      previousMillis = millis();   // update time every second

      Serial.print( "\n" );

      current_Volts1 = intercept + slope * inputStats1.sigma(); //Calibartions for offset and amplitude

      current_Volts1 = current_Volts1 * (78.30);             //Further calibrations for the amplitude

      

      Serial.print( "\tVoltage1: " );

      Serial.print( current_Volts1 ); //Calculation and Value display is done the rest is if you're using an OLED display

        lcd.setCursor(14, 1);

        lcd.print(current_Volts1);

        lcd.setCursor(14, 2);

        lcd.print(current_Volts2 );

        lcd.setCursor(14, 3);

        lcd.print(current_Volts3);

      

      current_Volts2 = intercept + slope * inputStats2.sigma(); //Calibartions for offset and amplitude

      current_Volts2 = current_Volts2 * (78.30); 

      Serial.print( "\tVoltage2: " );

      Serial.print( current_Volts2 ); //Calculation and Value display is done the rest is if you're using an OLED display

      current_Volts3 = intercept + slope * inputStats3.sigma(); //Calibartions for offset and amplitude

      current_Volts3 = current_Volts3 * (78.30);

      Serial.print( "\tVoltage3: " );

      Serial.print( current_Volts3 ); //Calculation and Value display is done the rest is if you're using an OLED display

    }

  }

}

Hi guys if you run the code above and is show "RunningStastitics not declare" you can download the Filter-Master from that links, it is .zip file. Add it to your list of library on arduino IDE and it will solve the problem.

Regards please follow me on youtube