mirror of
https://github.com/miguel5612/MQSensorsLib.git
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101 lines
3.6 KiB
C++
101 lines
3.6 KiB
C++
/*
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MQUnifiedsensor Library - reading an MQ3
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Demonstrates the use a MQ3 sensor.
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Library originally added 01 may 2019
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by Miguel A Califa, Yersson Carrillo, Ghiordy Contreras, Mario Rodriguez
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Added example
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modified 23 May 2019
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by Miguel Califa
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This example code is in the public domain.
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*/
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//Include the library
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#include <MQUnifiedsensor.h>
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//Definitions
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#define placa "Arduino UNO"
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#define Voltage_Resolution 5
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#define pin A0 //Analog input 0 of your arduino
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#define type "MQ-3" //MQ3
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//#define calibration_button 13 //Pin to calibrate your sensor
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//Declare Sensor
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MQUnifiedsensor MQ3(placa, Voltage_Resolution, pin, type);
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//Variables
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float CH4, LPG, CO, Alcohol, Hexane, Benzine;
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void setup() {
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Serial.begin(9600); //Init serial port
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//init the sensor
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/***************************** MQInicializar****************************************
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Input: pin, type
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Output:
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Remarks: This function create the sensor object.
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************************************************************************************/
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MQ3.setRegressionMethod("Exponential");
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MQ3.init();
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MQ3.serialDebug(true);
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//pinMode(calibration_button, INPUT);
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}
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void loop() {
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MQ3.update(); // Update data, the arduino will be read the voltaje in the analog pin
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/*
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//Si el valor de RL es diferente a 10K por favor asigna tu valor de RL con el siguiente metodo:
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MQ3.setRL(10);
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*/
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/*
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//Rutina de calibracion - Uncomment if you need (setup too and header)
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if(calibration_button)
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{
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float R0 = MQ3.calibrate();
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MQ3.setR0(R0);
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}
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*/
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/***************************** MQReadSensor ****************************************
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Input: Gas - Serial print flag
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Output: Value in PPM
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Remarks: This function use readPPM to read the value in PPM the gas in the air.
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************************************************************************************/
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//Read the sensor and print in serial port
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//Lecture will be saved in lecture variable
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//float lecture = MQ3.readSensor("", true); // Return Alcohol concentration
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// Options, uncomment where you need
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MQ3.setA(2*10^31); MQ3.setB(19.01); // Configurate the ecuation values
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CH4 = MQ3.readSensor(); // Return CH4 concentration
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MQ3.setA(44771); MQ3.setB(-3.245); // Configurate the ecuation values
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LPG = MQ3.readSensor(); // Return LPG concentration
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MQ3.setA(521853); MQ3.setB(-3.821); // Configurate the ecuation values
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CO = MQ3.readSensor(); // Return CO concentration
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MQ3.setA(0.3934); MQ3.setB(-1.504); // Configurate the ecuation values
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Alcohol = MQ3.readSensor(); // Return Alcohol concentration
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MQ3.setA(7585.3); MQ3.setB(-2.849); // Configurate the ecuation values
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Hexane = MQ3.readSensor(); // Return Hexane concentration
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MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values
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Benzine = MQ3.readSensor(); // Return Benzene concentration
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/*
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Serial.println("***************************");
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Serial.println("Lectures for MQ-3");
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Serial.print("Volt: ");Serial.print(MQ3.getVoltage(false));Serial.println(" V");
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Serial.print("R0: ");Serial.print(MQ3.getR0());Serial.println(" Ohm");
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Serial.print("CH4: ");Serial.print(CH4,2);Serial.println(" mg/L");
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Serial.print("LPG: ");Serial.print(LPG,2);Serial.println(" mg/L");
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Serial.print("CO: ");Serial.print(CO,2);Serial.println(" mg/L");
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Serial.print("Alcohol: ");Serial.print(Alcohol,2);Serial.println(" mg/L");
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Serial.print("Hexane: ");Serial.print(Hexane,2);Serial.println(" mg/L");
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Serial.print("Benzine: ");Serial.print(Benzine,2);Serial.println(" mg/L");
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Serial.println("***************************");
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*/
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MQ3.serialDebug();
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} |