Utiliser Arduino pour les Projets > Projets > Capteur – Capteur – Détecteur De Projets > Température Contrôlée Fumeur De Charbon De Bois

Température Contrôlée Fumeur De Charbon De Bois

dimanche août 5, 2018 / Ibrar Ayyub
Catégories: Projets, Capteur – Capteur – Détecteur De Projets, Mesure De La Température De Projets
Tags: charcoal, temperature, Thermistor
Contenu masquer
1 Things used in this project
2 Story
3 Schematics
4 Code

Use an Arduino MKR1000 to maintain a constant temperature in a charcoal smoker and allow monitoring over Wifi,

Temperature Controled Charcoal Smoker

Things used in this project

Hardware components

Arduino MKR1000
Arduino MKR1000
×1
5V Brushless Blower
×1
MOSFET IRF520N Driver Module
×1
100K ohm NTC Thermistors
×1
Breadboard (generic)
Breadboard (generic)
×1
Jumper wires (generic)
Jumper wires (generic)
×1
3.7V Lipo Battery >= 700mAh
×1

Software apps and online services

Arduino IDE
Arduino IDE
Visual Studio 2015
Microsoft Visual Studio 2015

Story

Schematics

Schematic

The Mrkr1000 is represented by a Arduino Nano

Schematic Diagram

The Mrkr1000 is represented by a Arduino Nano
The Fritzing tool did not have the part.

Code

Smoker Controller Sketch

Arduino

// sketch_12_04_server_wifi

#include <SPI.h>
#include <WiFi101.h>

char ssid[] = "BeeBar2";  // your network SSID (name)
char pass[] = "9254582716";     // your network password

WiFiServer server(80);
WiFiClient client;

const int numPins = 10;
int pins[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
int pinState[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
char line1[100];
char buffer[100];

IPAddress server_IP(192,168,123,90) ;

float targetTemperature = 225;
float smokerTemperature = 225;
float v0;

void setup()
{
  Serial.begin(9600);
  while (!Serial) {}; // Leonardo needs this
  pour (int i = 0; i < numPins; i++)
  {
    pinMode(pins[i], OUTPUT);
  }
  // change the ADC resolution to 12 bits
  analogReadResolution(12);

  if (WiFi.begin(ssid, pass))
  {
    WiFi.config(server_IP);
    printWifiStatus();
    //Serial.print("Point your Browser at: http://");
    //Serial.println(WiFi.localIP());
  }
  else
  {
    Serial.println("Could not connect to network");
  }
  server.begin();
}

void loop()
{
  client = server.available();
  if (client)
  {
    if (client.connected())
    {
      Serial.print("Request Received: ");
      Serial.println(line1);

      readHeader();
      if (! pageNameIs("/"))
      {
        Serial.print("Invalid Page Requested: ");
        Serial.println(line1);
        client.stop();
        return;
      }
      readTargetTempParam();
      client.println("HTTP/1.1 200 OK\nContent-Type: text/html\n");
      sendBody();
      delay(1);
      client.stop();
    }
    else
    {
      Serial.println("No Client connected ");
    }
  }
  int reading = analogRead(0);
  v0 = (float) reading / 1241.0;
  smokerTemperature = ThermisterTemp(v0, 100000, 10000, 3950, 25);
  digitalWrite(0, smokerTemperature<targetTemperature);
}

void sendBody()
{
  client.println("<html><body>");
  sendAnalogReadings();
  client.println("<form method='GET'>");
  client.print("\n<h1>Target Temperature:</h1> <input);
  client.print(targetTemperature);
  client.println("' name='t'><br>");
  client.println("<input type='submit' value='Update'/>\n</form>\n</body></html>");
}

void sendAnalogReadings()
{
  client.println("<h1>Temperatures</h1>\n<table border='1'>");
  
  Serial.print("Pin(");Serial.print(0);Serial.print("): V=");Serial.print(v0);Serial.print(" Temperature="); Serial.println(smokerTemperature);
 
  client.print("<tr><td>Smoker");
  client.print("<\/td><td>"); client.print(smokerTemperature);
  client.println("F<\/td><\/tr>");
    
  pour (int i = 1; i < 7; i++)
  {
    int reading = analogRead(i);
    if (reading > 0)
    {
      float v = (float) reading / 1241.0;
      float T = ThermisterTemp(v, 100000, 10000, 3950, 25);
      Serial.print("Pin(");Serial.print(i);Serial.print("): ");Serial.print(reading);Serial.print("V=");Serial.print(v);Serial.print(" Temperature="); Serial.println(T);
      client.print("<tr><td>Probe"); client.print(i);
      client.print("<\/td><td>"); client.print(T);
      client.println("F<\/td><\/tr>");
    }
  }
  client.println("<\/table>");
}

void readHeader()
{
  readRequestLine(line1);
  while (readRequestLine(buffer) > 1 && buffer[0] != '\n') {}
}

int readRequestLine(char *line)
{
  char ch;
  int i = 0;
  while (ch != '\n' && i < 100 && client.available())
  {
    if (client.available())
    {
      ch = client.read();
      line[i] = ch;
      i ++;
    }
  }
  line[i] = '\0';
  return i;
}

boolean pageNameIs(char* name)
{
  // page name starts at char pos 4
  // ends with space
  int i = 4;
  char ch = line1[i];
  while (ch != ' ' && ch != '\n' && ch != '?')
  {
    if (name[i - 4] != line1[i])
    {
      return false;
    }
    i++;
    ch = line1[i];
  }
  return true;
}

float readTargetTempParam()
{
  //Serial.print("parsing targetTemperature");Serial.println(line1);
  
  int len = strlen(line1);
  pour (int i = 0; i < len; i++)
  {
    if (line1[i] == 't' && line1[i + 1] == '=')
    {
      float val = 0;
      pour (int j=i+2; j< len; j++)
      {
        if (isDigit(line1[j]))
        {
          //Serial.print(line1[j]);
          val *= 10;
          val += (int)line1[j]-'0';
        }
        else
        {
          break;
        }
      }
      //Serial.print(" ");
      targetTemperature = val;
      //Serial.print("targetTemperature = ");Serial.println(val);
      return val;
    }
  }
  return -1;
}

void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}

float ThermisterTemp(float Vtherm, int R0therm, int Rfixed, int Beta, int T0)
{
  // Current throught the 2 rsiteres is the same, so compute the current 
  // throught the fixed resiter using Ohms law I = V / R
  // The voltage drop over the fixed resister is Vcc (3.3V) - Vtherm
  double I = (3.3 - Vtherm) / Rfixed;
  //Serial.print("I=");Serial.print(I,12);Serial.print(" ");
  
  // Use ohms law to cacultate the resitance of the thermister R = V / I
  double Rtherm = Vtherm / I;
  //Serial.print("Rtherm=");Serial.print(Rtherm);Serial.print(" ");

  // Use the Beta eaquation to calulate the tempuratue in C
  // 1/T = (1/Beta)*ln(Rtherm/R0therm) + (1/T0)
  // (Steinhart-Hart equatin is more accutrate, but I only have the Beta constant 
  // for my thermister.

  // All temperatres are in Kelvin
  T0 += 273.15;
  
  double T = 1.0/( (1.0/((double)Beta))*log((Rtherm)/((double)R0therm)) + (1.0/((double)T0)) );
  //Serial.print("T=");Serial.print(T);Serial.print(" ");

  //Serial.println("");
  // convert to farenheit for us ignorant Americans
  return (float) ((9*(T-273.15))/5)+32;
}

Smoker Controller Sketch & Universal App

DuncanBarbee / SmokerController

Download as zip

A Propos De L'Auteur

Ibrar Ayyub

Je suis expérimenté, rédacteur technique, titulaire d'une Maîtrise en informatique de BZU Multan, Pakistan à l'Université. Avec un arrière-plan couvrant diverses industries, notamment en matière de domotique et de l'ingénierie, j'ai perfectionné mes compétences dans la rédaction claire et concise du contenu. Compétent en tirant parti de l'infographie et des diagrammes, je m'efforce de simplifier des concepts complexes pour les lecteurs. Ma force réside dans une recherche approfondie et de présenter l'information de façon structurée et logique format.

Suivez-Nous:
LinkedinTwitter

Laisser un Commentaire

Votre adresse e-mail ne sera pas publiée. Les champs obligatoires sont indiqués avec *

fr_FRFrench
en_USEnglish fr_FRFrench
Faire défiler vers le Haut