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https://github.com/miguel5612/MQSensorsLib.git
synced 2025-03-15 05:17:30 +03:00
Fixed string
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miguel5612
parent
c3068ecca2
commit
9cc3635e75
@ -25,17 +25,14 @@
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MQUnifiedsensor MQ2(pin, type);
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void setup() {
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//Init serial port
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Serial.begin(115200);
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//init the sensor
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MQ2.inicializar();
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}
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void loop() {
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//Read the sensor
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int read = MQ2.readSensor();
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//Print measurements
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Serial.print("MQ2: ");
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Serial.print(read);
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Serial.println(" PPM");
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//delay 1s to next measure
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delay(1000);
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//Read the sensor and print in serial port
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int lecture = MQ2.readSensor("", true);
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delay(400);
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}
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@ -81,14 +81,12 @@ int MQUnifiedsensor::readSensor(String nameLectureRequeired, bool print)
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if(print)
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{
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String nameLecture = getnameLecture();
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Serial.print("Medicion");
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Serial.print("(" + nameLecture + "): ");
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Serial.println(_PPM);
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Serial.print("Slope: ");
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Serial.print(String(_m));
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Serial.print(", B point: ");
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Serial.println(String(_b));
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Serial.println("**********************");
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Serial.println("* Sensor: MQ-" + String(_type));
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Serial.println("* m =" + String(_m) + " ,b =" + String(_b));
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Serial.println("* RS/R0 = " + String(_ratio) + " ,Voltaje leido(ADC): " + String(this->getVoltage()));
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Serial.println("* Lectura(" + nameLecture + ")=" + String(_PPM) + " PPM");
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Serial.println("**********************");
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}
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return _PPM;
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}
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@ -103,34 +101,20 @@ void MQUnifiedsensor::setSensorCharacteristics(String nameLectureRequeired, bool
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{
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//Set default
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setDefaultGas();
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//Set ratio in clean air to calc R0
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setRatioInCleanAir();
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//Put the default into variable internally used
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nameLectureRequeired = _nameLectureRequeired;
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}
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//Dinamic index search
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if(print)
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{
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Serial.println("Busqueda dinamica de los indices");
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}
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for (int i=0; i<sizeof(_MQ); i++) {
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if (nameLectureRequeired == _MQ[i]) { //modified here
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_lecturePosInArray = i;
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break;
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}
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}
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//Serial debugging
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if(print)
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{
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String nameLecture = getnameLecture();
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Serial.print("index in nameLectures: ");
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Serial.println(_lecturePosInArray);
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Serial.print("Slope index: ");
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Serial.println(_lecturePosInArray+1);
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Serial.print("B point index: ");
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Serial.println(_lecturePosInArray+2);
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}
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_m = stringToDouble(_MQ[_lecturePosInArray+1]);
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_b = stringToDouble(_MQ[_lecturePosInArray+2]);
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//Save the name for future calls
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@ -142,13 +126,12 @@ int MQUnifiedsensor::readPPM(int m, int b) {
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*/
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double sensor_volt = this->getVoltage();
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double RS_gas; //Define variable for sensor resistance
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double ratio; //Define variable for ratio
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RS_gas = ((5.0 * 10.0) / sensor_volt) - 10.0; //Get value of RS in a gas
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ratio = RS_gas / this->_R0; // Get ratio RS_gas/RS_air
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_ratio = RS_gas / this->_R0; // Get ratio RS_gas/RS_air
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double ppm_log = (log10(ratio) - b) / m; //Get ppm value in linear scale according to the the ratio value
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double ppm_log = (log10(_ratio) - b) / m; //Get ppm value in linear scale according to the the ratio value
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double ppm = pow(10, ppm_log); //Convert ppm value to log scale
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return floor(ppm);
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}
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@ -158,8 +141,8 @@ double MQUnifiedsensor::calibrate() {
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float R0; //Define variable for R0
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float sensorValue; //Define variable for analog readings
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sensor_volt = this->getVoltage(); //Convert average to voltage
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RS_air = ((5.0 * 10.0) / sensor_volt) - 10.0; //Calculate RS in fresh air
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R0 = RS_air / 4.4; //Calculate R0
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RS_air = (5.0-sensor_volt)/sensor_volt; // omit *RL
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R0 = RS_air / _ratioInCleanAir; //Calculate R0
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return R0;
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}
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double MQUnifiedsensor::getVoltage() {
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@ -178,7 +161,6 @@ void MQUnifiedsensor::setR0(double R0) {
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}
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void MQUnifiedsensor::setDefaultGas()
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{
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Serial.println("Carga de los gases por defecto");
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if(_type == 2)
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{
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_nameLectureRequeired = defaultMQ2;
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@ -228,6 +210,57 @@ void MQUnifiedsensor::setDefaultGas()
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_nameLectureRequeired = defaultMQ309;
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}
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}
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void MQUnifiedsensor::setRatioInCleanAir()
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{
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if(_type == 2)
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{
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_ratioInCleanAir = RatioMQ2CleanAir;
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}
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else if(_type == 3)
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{
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_ratioInCleanAir = RatioMQ3CleanAir;
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}
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else if(_type == 4)
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{
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_ratioInCleanAir = RatioMQ4CleanAir;
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}
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else if(_type == 5)
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{
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_ratioInCleanAir = RatioMQ5CleanAir;
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}
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else if(_type == 6)
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{
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_ratioInCleanAir = RatioMQ6CleanAir;
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}
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else if(_type == 7)
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{
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_ratioInCleanAir = RatioMQ7CleanAir;
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}
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else if(_type == 8)
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{
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_ratioInCleanAir = RatioMQ8CleanAir;
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}
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else if(_type == 9)
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{
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_ratioInCleanAir = RatioMQ9CleanAir;
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}
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else if(_type == 131)
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{
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_ratioInCleanAir = RatioMQ131CleanAir;
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}
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else if(_type == 135)
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{
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_ratioInCleanAir = RatioMQ135CleanAir;
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}
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else if(_type == 303)
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{
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_ratioInCleanAir = RatioMQ303CleanAir;
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}
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else if(_type == 309)
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{
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_ratioInCleanAir = RatioMQ309CleanAir;
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}
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}
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double MQUnifiedsensor::stringToDouble(String & str)
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{
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return atof( str.c_str() );
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@ -21,24 +21,37 @@
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#define defaultMQ303 "Isobutano" //Isobutano
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#define defaultMQ309 "CO" //CO
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#define RatioMQ2CleanAir 1
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#define RatioMQ3CleanAir 2
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#define RatioMQ4CleanAir 3
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#define RatioMQ5CleanAir 4
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#define RatioMQ6CleanAir 5
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#define RatioMQ7CleanAir 6
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#define RatioMQ8CleanAir 7
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#define RatioMQ9CleanAir 8
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#define RatioMQ131CleanAir 9
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#define RatioMQ135CleanAir 131
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#define RatioMQ303CleanAir 135
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#define RatioMQ309CleanAir 303
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#define ADC_RESOLUTION 10 // for 10bit analog to digital converter.
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#define retries 50
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#define retry_interval 20
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//Values consolidated
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/* Gas, Value of m (Slope) and b (Cut on x axis) points */
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const char* const _MQ2[18] = {"H2","-2.2459","2.9845","LPG","-2.2879","2.7901","CO","-2.6208","3.6075","Alcohol","-3.1157","4.5134","Propane","-2.7028","3.5595","Benzene","-2.2879","2.7901"};
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const char* const _MQ3[18] = {"LPG","-3.1851","4.7048","CH4","-17.531","28.785","CO","-4.339","6.4432","Alcohol","-1.435","0.4103","Benzene","-2.7009","0.632","Hexane","-2.7268","3.6299"};
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const char* const _MQ4[15] = {"LPG","-2.5818","3.6303","CH4","0.9873","2.6386","CO","-5.5945","5.6693","Alcohol","-11.89","9.0375","smoke","-11.189","9.0375"};
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const char* const _MQ5[15] = {"H2","-4.368","2.9667","LPG","-2.5723","1.8943","CH4","-2.4438","2.3044","CO","-4.8188","5.2023","Alcohol","-4.419","4.8044"};
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const char* const _MQ6[15] = {"H2","-3.6775","5.0286","LPG","-1.6567","2.8775","CH4","-1","3.301","CO","-12.791","14.523","Alcohol","-5.8057","7.5292"};
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const char* const _MQ7[15] = {"H2","-1.329","1.8864","LPG","-7.8626","9.1056","CH4","-5.4878","8.8387","CO","-1.4065","2.0162","Alcohol","-6.3219","9.924"};
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const char* const _MQ8[15] = {"H2","-0.7152","2.9891","LPG","-3.419","7.3513","CH4","-7.5609","15.243","CO","-7.0753","15.396","Alcohol","-1.7459","4.7575"};
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const char* const _MQ9[9] = {"LPG","-2.2535","2.9855","CH4","-1.6012","3.1476","CO","-1.749","2.827"};
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const char* const _MQ131[9] = {"Nox","-2.7245","3.3004","CL2","-1.0333","1.7117","O3","-1.2037","1.6455"};
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const char* const _MQ135[18] = {"CO","-2.7268","2.301","Alcohol","-2.8608","1.8627","CO2","-3.2819","1.9903","Tolueno","-5.7015","1.1612","NH4","-2.2119","2.0473","Acetona","-5.9682","1.0175"};
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const char* const _MQ303A[9] = {"Iso-butano","-2.3543","1.144","Hydrogeno","-2.4338","0.7558","Ethanol","-2.5597","0.4436"};
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const char* const _MQ309A[12] = {"H2","-2.1311","3.0886","CH4","-1.6554","2.985","CO","-4.7623","6.7413","Alcohol","-3.7686","5.6744"};
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const String _MQ2[18] = {"H2","-2.2459","2.9845","LPG","-2.2879","2.7901","CO","-2.6208","3.6075","Alcohol","-3.1157","4.5134","Propane","-2.7028","3.5595","Benzene","-2.2879","2.7901"};
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const String _MQ3[18] = {"LPG","-3.1851","4.7048","CH4","-17.531","28.785","CO","-4.339","6.4432","Alcohol","-1.435","0.4103","Benzene","-2.7009","0.632","Hexane","-2.7268","3.6299"};
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const String _MQ4[15] = {"LPG","-2.5818","3.6303","CH4","0.9873","2.6386","CO","-5.5945","5.6693","Alcohol","-11.89","9.0375","smoke","-11.189","9.0375"};
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const String _MQ5[15] = {"H2","-4.368","2.9667","LPG","-2.5723","1.8943","CH4","-2.4438","2.3044","CO","-4.8188","5.2023","Alcohol","-4.419","4.8044"};
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const String _MQ6[15] = {"H2","-3.6775","5.0286","LPG","-1.6567","2.8775","CH4","-1","3.301","CO","-12.791","14.523","Alcohol","-5.8057","7.5292"};
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const String _MQ7[15] = {"H2","-1.329","1.8864","LPG","-7.8626","9.1056","CH4","-5.4878","8.8387","CO","-1.4065","2.0162","Alcohol","-6.3219","9.924"};
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const String _MQ8[15] = {"H2","-0.7152","2.9891","LPG","-3.419","7.3513","CH4","-7.5609","15.243","CO","-7.0753","15.396","Alcohol","-1.7459","4.7575"};
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const String _MQ9[9] = {"LPG","-2.2535","2.9855","CH4","-1.6012","3.1476","CO","-1.749","2.827"};
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const String _MQ131[9] = {"Nox","-2.7245","3.3004","CL2","-1.0333","1.7117","O3","-1.2037","1.6455"};
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const String _MQ135[18] = {"CO","-2.7268","2.301","Alcohol","-2.8608","1.8627","CO2","-3.2819","1.9903","Tolueno","-5.7015","1.1612","NH4","-2.2119","2.0473","Acetona","-5.9682","1.0175"};
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const String _MQ303A[9] = {"Iso-butano","-2.3543","1.144","Hydrogeno","-2.4338","0.7558","Ethanol","-2.5597","0.4436"};
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const String _MQ309A[12] = {"H2","-2.1311","3.0886","CH4","-1.6554","2.985","CO","-4.7623","6.7413","Alcohol","-3.7686","5.6744"};
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class MQUnifiedsensor
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{
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@ -49,6 +62,7 @@ class MQUnifiedsensor
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void setVoltResolution(float voltaje);
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void setSensorCharacteristics(String nameLectureReqeuired, bool print);
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void setDefaultGas();
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void setRatioInCleanAir();
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int readSensor(String nameLectureRequeired = "", bool print = false);
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int readPPM(int m, int b);
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@ -62,8 +76,8 @@ class MQUnifiedsensor
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private:
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int _pin, _type, _PPM, _lecturePosInArray;
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double _R0, _m, _b;
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int _pin, _type, _PPM, _lecturePosInArray, _ratioInCleanAir;
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double RS_air,_R0 = 11.820, _m, _b, _ratio;
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String _MQ[19], _nameLectureRequeired;
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int VOLT_RESOLUTION = 5.0; // if 3.3v use 3.3
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};
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