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/*
@Author : Mayur Khatri
Description: Smart Energy Meter
Last Edited: 01-May-2016
Implementatation: GSM Module shield implementation with arduino tested with LCD.
*/
#include <SoftwareSerial.h>
#include <LiquidCrystal.h> // Importing LCD Library file
/*
* RS: Pin 12
* EN: Pin 11
* D4: Pin 5
* D5: Pin 4
* D6: Pin 3
* D7: Pin 2
*/
LiquidCrystal lcd (12, 11, 5, 4, 3, 2); //lcd display pin
char mobileNumber; // Will hold the incoming character from the GSM shield
SoftwareSerial SIM900(9, 10);
const int voltageSensor = A0; // voltage pin
const int currentSensor = A1; // current pin
int mVperAmp = 66; // use 100 for 20A Module and 66 for 30A Module
double sumWH = 0.00000;
float WH = 0;//energy consumption in watt hour
double sumRupees = 0.00000;//Total energy consumption in rupees
float rupees = 0;//energy consumption in rupees
double Voltage = 0;//AC supply peak voltage
double vrms = 0;//AC supply rms voltage
double current = 0;//load peak current
double irms = 0;//load rms current
double power = 0;//
void setup()
{
Serial.begin(19200);
SIM900.begin(19200);
delay(500);
SIM900.print("AT+CLIP=1\r"); // turn on caller ID notification , to get missed call number
delay(100);
lcd.begin(16,2); // Display Columms, Rows and Size
lcd.clear();
}
// Used to send Total Energy Consumption Billing to Customer
void sendBilling()
{
SIM900.println("AT+CLIP=1\r");
SIM900.println("AT+CMGF=1"); // Setting the GSM Module in Text mode
delay(1000);
SIM900.println("AT+CMGS=\"XXXXXXXXXX\"\r"); // Sending Energy Consumption to Customer's Mobile Number
delay(1000);
SIM900.print("Dear Customer, Your Energy Consumption is :");
SIM900.print(sumWH);
SIM900.print(" and Total Billing is Rs. ");
SIM900.print(sumRupees);
delay(100);
SIM900.println((char)26); // ASCII code of CTRL+Z
delay(100);
}
void energyCalculations()
{
// getting voltage from Input PIN
Voltage = getVPP(0);
vrms = (Voltage / 2.0) * 0.707 * 575; //find total voltage
Serial.print("VOLTAGE : ");
Serial.print(vrms);
Serial.println("Volt");
// getting current from Input PIN
current = getVPP(1);
irms = (current / 2.0) * 0.707 * 1000 / mVperAmp;
// Serial.print("CURRENT :");
// Serial.print(irms);
// Serial.println("Amps");
power=(vrms * irms * 0.3099);
//Serial.print("POWER :");
// Serial.print(power);
//Serial.println("watt");
WH = (power / 3600);
//Serial.print("ENERGY CONSUMED :");
//Serial.print(WH);
//Serial.println("Watt-Hour");
sumWH = sumWH + WH;
//Serial.print("TOTAL ENERGY CONSUMED :");
//Serial.print(sumWH);
//Serial.println("Watt-Hour");
rupees = getReading();
// Serial.print("ENERGY CONSUMED IN RUPEES :");
//Serial.print(rupees);
// Serial.println("Rs.");
sumRupees = sumRupees + rupees ;
//Serial.print("TOTAL ENERGY CONSUMED IN RUPEES :");
//Serial.print(sumRupees);
//Serial.println("Rs.");
//Serial.println(""); // print the next sets of parameter after a blank line
lcd.setCursor(1,0); // set the cursor at 1st col and 1st row
lcd.print(vrms);
lcd.print("v ");
lcd.print(irms);
lcd.print("A");
lcd.setCursor(1,1); // set the cursor at 1st col and 2nd row
lcd.print(power);
lcd.print("w");
//delay(1000);
lcd.clear(); // clear the screen
lcd.setCursor(1,0); // set the cursor at 1st col and 1st row
lcd.print(WH);
lcd.print("WH ");
lcd.setCursor(1,1); // set the cursor at 1st col and 2nd row
lcd.print(rupees);
lcd.print("Rs.");
//delay(1000);
lcd.clear(); // clear the screen
lcd.setCursor(1,0); // set the cursor at 1st col and 1st row
lcd.print(sumWH);
lcd.print("Total WH ");
lcd.setCursor(1,1); // set the cursor at 1st col and 2nd row
lcd.print(sumRupees);
lcd.print("Total Rs.");
//delay(1000);
lcd.clear();
}
void loop()
{
energyCalculations();
gsm();
//if(SIM900.available() > 0)
// {
// Serial.println("Inside SIM900 avaialble");
// Serial.write(SIM900.read());
// delay(200);
// }
}
void gsm()
{
//Serial.println("Inside GSM");
if(SIM900.available() > 0)
{
//Serial.println("SIM900 is available");
delay(10);
mobileNumber = SIM900.read();
Serial.print(mobileNumber);
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
delay(10);
mobileNumber = SIM900.read();
if(mobileNumber == 'X')
{
// delay(10);
Serial.println("Number Matched !");
Serial.println("Sending Billing to Customer");
//delay(90000);
sendBilling();
}
}
}
}
}
}
}
}
}
}
}
}
float getVPP(int pinValue)
{
// pinValue = 0 means it is Voltage Input , pinValue = 1 means it is Current Input
float result;
int readValue; // value read from the sensor
int maxValue = 0; // store max value here
int minValue = 1024; // store min value here
uint32_t start_time = millis();
while((millis() - start_time) < 1000) //sample for 1 Sec
{
if(pinValue == 0)
{
// reading Voltage Input PIN
readValue = analogRead(voltageSensor);
}
else if(pinValue == 1)
{
// reading Current Input PIN
readValue = analogRead(currentSensor);
}
// see if you have a new maxValue
if (readValue > maxValue)
{
/*record the maximum sensor value*/
maxValue = readValue;
}
if (readValue < minValue)
{
/*record the maximum sensor value*/
minValue = readValue;
}
}
// Subtract min from max
result = ((maxValue - minValue) * 5.0) / 1024.0;
return result;
}
float getReading()
{
float solution;
if(sumWH <= 50)
solution = (WH * 3.15);
if(( sumWH > 50 ) && ( sumWH <= 100 ))
solution = ( WH * 3.60 );
if(( sumWH > 100 ) && (sumWH <= 250))
solution = (WH * 4.25);
if(sumWH > 250)
solution = (WH * 5.20);
return solution;
}Editor is loading...
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