Create a gist now

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Pulse Frequency Modulation IGBT Controller with Arduino
// IGBT Pulse Frequency Modulation IGBT ControlleRev
// Rev 8.0 Final.
// Obverheating protection at 110 Celsius deg.
// Start self test
// Check this: http://damienclarke.me/code/posts/writing-a-better-noise-reducing-analogread for the
// analog noise reduction algorithm.
// Author: Adrian Florescu YO3HJV, nov. 2017
// https://yo3hjv.blogspot.com/2017/11/pulse-frequency-modulation-igbt.html
#define lenght 16.0
double percent=100.0;
unsigned char b;
unsigned int peace;
unsigned int adcM;
// Out PWM pin 9
// Out relay pin 10
// Temp DS18B pin 11
// Pot wiper at A0
int pinProt = 10;
// custom characters
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// Noise reduction algorithm for reading analog value from the wiper
#include <ResponsiveAnalogRead.h>
const int ANALOG_PIN = A0;
ResponsiveAnalogRead analog(ANALOG_PIN, true);
#include <OneWire.h>
#include <DallasTemperature.h>
// Data wire is plugged into port 11 on the Arduino
#define ONE_WIRE_BUS 11
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
float temp = 0;
int PWMfact = 0;
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address
#define lenght 16.0
byte p1[8] = {
B10000,
B10000,
B10000,
B10000,
B10000,
B10000,
B10000,
B10000};
byte p2[8] = {
B11000,
B11000,
B11000,
B11000,
B11000,
B11000,
B11000,
B11000};
byte p3[8] = {
B11100,
B11100,
B11100,
B11100,
B11100,
B11100,
B11100,
B11100};
byte p4[8] = {
B11110,
B11110,
B11110,
B11110,
B11110,
B11110,
B11110,
B11110};
byte p5[8] = {
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111};
// The temperature is checked at some intervals
unsigned long previousMillis = 0; // will store last time temp was updated
const long interval = 3000; // interval at which to check temp(milliseconds)
void setup() {
pinMode(pinProt, OUTPUT);
pinMode(9, OUTPUT);
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("Self test");
lcd.setCursor(0, 1);
lcd.print("Releu");
delay(1000);
relayTest();
lcd.clear();
tempTest();
delay(1000);
lcd.createChar(0, p1);
lcd.createChar(1, p2);
lcd.createChar(2, p3);
lcd.createChar(3, p4);
lcd.createChar(4, p5);
// Let's generate the PWM control signal.
pinMode(9, OUTPUT); TCCR1B = TCCR1B & 0b11111000 | 0x04; // 122 Hz control signal
pinMode(pinProt, HIGH ); // Activate relay push pull module
// Start up Sensor library
sensors.begin();
Serial.begin(115200);
lcd.clear();
}
void loop() {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
sensors.requestTemperatures();
float temp = (sensors.getTempCByIndex(0));
// Uncomment following lines for serial debugging
// Serial.print(temp);
// Serial.print("---");
// Serial.println(percent);
if (temp == -127){
lcd.setCursor(10, 1);
lcd.print(" ");
}
if (temp >110) {
pinMode(pinProt, LOW );
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("DEPASIRE");
lcd.setCursor(0, 1);
lcd.print("TEMPERATURA");
exit(0);
}
if (temp>-30){
lcd.setCursor(11, 1);
lcd.print(" ");
lcd.setCursor(14, 1);
lcd.print((char)223);
lcd.print("C");
lcd.setCursor(11, 1);
lcd.print(temp, 0);
}
}
analog.update();
unsigned int adcM = analog.getValue();
// PWM from 5% to 98% otherwise On or OFF
if (adcM > 50 && adcM <= 1021) {
lcd.setCursor(6, 1);
lcd.print(" ");
PWMfact = map(adcM, 0, 1022, 0, 256);
analogWrite(9, -PWMfact);}
else if (adcM <= 49) {digitalWrite(9, HIGH);
lcd.setCursor(6, 1);
lcd.print("STOP");
}
else if (adcM > 1021) {digitalWrite(9, LOW);
lcd.setCursor(6, 1);
lcd.print("FULL");
}
percent = adcM/1024.0*100.0;
lcd.setCursor(0, 1);
lcd.print(" %");
lcd.setCursor(0, 1);
lcd.print(percent, 0);
lcd.setCursor(0,0);
double a=lenght/95*percent;
if (a>=1) {
for (int i=1;i<a;i++) {
lcd.write(4);
b=i;
}
a=a-b;
}
peace=a*5;
switch (peace) {
case 0:
break;
case 1:
lcd.write((char)0);
break;
case 2:
lcd.write(1);
break;
case 3:
lcd.write(2);
break;
case 4:
lcd.write(3);
break;
}
for (int i =0;i<(lenght-b);i++) {
lcd.print(" "); }
}
void relayTest(){
pinMode(9, HIGH); // block control PWM
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
pinMode(pinProt, HIGH );
delay(20);
pinMode(pinProt, LOW);
delay(20);
}
// Overheat protection
void tempTest(){
lcd.clear();
sensors.requestTemperatures(); // Send the command to get temperatures
float temp = (sensors.getTempCByIndex(0));
if (temp != -127) {
lcd.setCursor(0, 0);
lcd.print("Senzor termic");
lcd.setCursor(0, 1);
lcd.print("prezent");
}
else {lcd.setCursor(0, 0);
lcd.print("Senzor termic");
lcd.setCursor(0, 1);
lcd.print("nu este prezent");
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment