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Aparat Aer Conditionat
Student: Eduard Popa-Costin
Grupa: 332CC
Introducere
Proiectul ales este o simulare de aer conditionat, simplificat.Vor exista doi senzori de
masurare a temperaturii si a umiditatii. Aceste informatii vor fi afisate pe ecran iar
utilizatorul va putea controla temperatura dorita.
Descriere generală
Se va afisa pe ecran temperatura din camera masurata cu ajutorul senzorului de temperatura
si umiditate. Utilizatorul va putea sa introduca o temperatura mai mica decat cea afisata
prin apasarea succesiva a unui buton, moment in care ventilatorul va porni automat.
Hardware Design
Lista piese folosite:
- Arduino
- Ventilator
- Senzor de temperatura si umiditate(DHT-11)
- Ecran OLED 0.96”
- Breadboard
- Rezistente, fire
- Butoane
Software Design
#include <dht11.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define BUTTON_INCREMENT 2
#define BUTTON_DECREMENT 3
#define BUTTON_MODE 4
#define DHT11PIN_OUTSIDE 7
#define DHT11PIN_INSIDE 6
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
dht11 DHT11;
int INA_OUTSIDE = 9;
int INB_OUTSIDE = 10;
int incrementButtonState = HIGH;
int decrementButtonState = HIGH;
int lastIncrementButtonState = HIGH;
int lastDecrementButtonState = HIGH;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;
unsigned long previousTemperatureTime = 0;
long referenceTemperature = 25.00;
const unsigned long temperatureInterval = 2000;
bool buttonModeState = false;
bool buttonModePressed = false;
bool fanOn = false;
bool mode = false;
void setup() {
pinMode(BUTTON_INCREMENT, INPUT);
pinMode(BUTTON_DECREMENT, INPUT);
pinMode(BUTTON_MODE, INPUT_PULLUP);
pinMode(INA_OUTSIDE, OUTPUT);
pinMode(INB_OUTSIDE, OUTPUT);
digitalWrite(INA_OUTSIDE, LOW);
digitalWrite(INB_OUTSIDE, LOW);
Serial.begin(9600);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}
delay(2000);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
}
void loop() {
unsigned long currentMillis = millis();
if (digitalRead(BUTTON_MODE) == LOW) {
if (!buttonModePressed) {
buttonModePressed = true;
buttonModeState = !buttonModeState;
}
} else {
buttonModePressed = false;
}
if (!buttonModeState) {
display.clearDisplay();
display.setCursor(0, 10);
display.println("Mode: Manual");
display.setCursor(0, 25);
display.print("Temp (C): ");
display.println((float)DHT11.temperature, 2);
display.setCursor(0, 40);
display.print("Temp limit (C): ");
display.println(referenceTemperature);
display.setCursor(0, 52);
display.print("Fan: ");
if (fanOn) {
display.println("ON");
}
else {
display.println("OFF");
}
display.display();
int reading_increment = digitalRead(BUTTON_INCREMENT);
int reading_decrement = digitalRead(BUTTON_DECREMENT);
if (reading_increment != lastIncrementButtonState) {
lastDebounceTime = millis();
}
if ((millis() - lastDebounceTime) > debounceDelay) {
if (reading_increment != incrementButtonState) {
incrementButtonState = reading_increment;
if (incrementButtonState == LOW) {
referenceTemperature++;
}
}
}
lastIncrementButtonState = reading_increment;
if (reading_decrement != lastDecrementButtonState) {
lastDebounceTime = millis();
}
if ((millis() - lastDebounceTime) > debounceDelay) {
if (reading_decrement != decrementButtonState) {
decrementButtonState = reading_decrement;
if (decrementButtonState == LOW) {
referenceTemperature--;
}
}
}
lastDecrementButtonState = reading_decrement;
if (currentMillis - previousTemperatureTime >= temperatureInterval) {
previousTemperatureTime = currentMillis;
DHT11.read(DHT11PIN_OUTSIDE);
if ((float)DHT11.temperature > referenceTemperature) {
if (!fanOn) {
digitalWrite(INA_OUTSIDE, LOW);
digitalWrite(INB_OUTSIDE, HIGH);
fanOn = true;
}
}
else {
if (fanOn) {
digitalWrite(INA_OUTSIDE, LOW);
digitalWrite(INB_OUTSIDE, LOW);
fanOn = false;
}
}
}
display.display();
}
else {
display.clearDisplay();
display.setCursor(0, 10);
display.println("Mode: Auto");
if (currentMillis - previousTemperatureTime >= temperatureInterval) {
previousTemperatureTime = currentMillis;
DHT11.read(DHT11PIN_OUTSIDE);
float temperature_outside = DHT11.temperature;
DHT11.read(DHT11PIN_INSIDE);
float temperature_inside = DHT11.temperature;
display.setCursor(0, 25);
display.print("Temp outside(C) ");
display.println(temperature_outside, 2);
display.setCursor(0, 40);
display.print("Temp inside(C) ");
display.println(temperature_inside, 2);
if (temperature_inside <= temperature_outside) {
if (!fanOn) {
digitalWrite(INA_OUTSIDE, LOW);
digitalWrite(INB_OUTSIDE, HIGH);
fanOn = true;
display.setCursor(0, 52);
display.println("Fan: ON");
display.display();
}
}
else {
if (fanOn) {
digitalWrite(INA_OUTSIDE, LOW);
digitalWrite(INB_OUTSIDE, LOW);
fanOn = false;
display.setCursor(0, 52);
display.println("Fan: OFF");
display.display();
}
}
}
}
}
Rezultate Obţinute
Concluzii
Download
Jurnal
27.04: Alegere tema proiect
05.05: Comanda piese
06.05: Creare pagina wiki
05.05: Comanda piese
06.05: Creare pagina wiki
Bibliografie/Resurse
