mirror of
https://github.com/miguel5612/MQSensorsLib.git
synced 2025-03-29 12:10:04 +03:00
118 lines
4.0 KiB
C++
118 lines
4.0 KiB
C++
//Include the library
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#include <MQUnifiedsensor.h>
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/*
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This program was made to test the algorithm that from the ratio obtains
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the PPM (The core of this library), regardless of the plate in which the
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result is executed should give a small error (ideally less than 5%), is
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our way of self-evaluation, we tell the library what is the value of the
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ratio and ask him to calculate the PPM and compare it against the value
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that should really give, these values were taken from the same datasheet
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with which the library was made.
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*/
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//Definitions
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#define placa "Arduino Mega 2560"
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#define Voltage_Resolution 5
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#define type "MQ-Board"
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#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO
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#define pin2 A2 //Analog input 2 of your arduino
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#define pin3 A3 //Analog input 3 of your arduino
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#define pin4 A4 //Analog input 4 of your arduino
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#define pin5 A5 //Analog input 5 of your arduino
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#define pin6 A6 //Analog input 6 of your arduino
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#define pin7 A7 //Analog input 7 of your arduino
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#define pin8 A8 //Analog input 8 of your arduino
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#define pin9 A9 //Analog input 9 of your arduino
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//#define calibration_button 13 //Pin to calibrate your sensor
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//Declare Sensor
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MQUnifiedsensor MQ2(placa, Voltage_Resolution, ADC_Bit_Resolution, pin2, type);
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MQUnifiedsensor MQ3(placa, Voltage_Resolution, ADC_Bit_Resolution, pin3, type);
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MQUnifiedsensor MQ4(placa, Voltage_Resolution, ADC_Bit_Resolution, pin4, type);
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MQUnifiedsensor MQ5(placa, Voltage_Resolution, ADC_Bit_Resolution, pin5, type);
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MQUnifiedsensor MQ6(placa, Voltage_Resolution, ADC_Bit_Resolution, pin6, type);
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MQUnifiedsensor MQ7(placa, Voltage_Resolution, ADC_Bit_Resolution, pin7, type);
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MQUnifiedsensor MQ8(placa, Voltage_Resolution, ADC_Bit_Resolution, pin8, type);
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MQUnifiedsensor MQ9(placa, Voltage_Resolution, ADC_Bit_Resolution, pin9, type);
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int ratio[10] = {};
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int expectedValue[10] = {};
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void setup()
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{
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//Init serial port
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Serial.begin(9600);
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//init the sensor
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MQ2.init();
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MQ2.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ2.setA(574.25); MQ2.setB(-2.222); // Configurate the ecuation values to get LPG concentration
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MQ2.setR0(9.659574468);
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MQ3.init();
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MQ3.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values to get Benzene concentration
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MQ3.setR0(3.86018237);
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MQ4.init();
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MQ4.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ4.setA(1012.7); MQ4.setB(-2.786); // Configurate the ecuation values to get CH4 concentration
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MQ4.setR0(3.86018237);
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MQ5.init();
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MQ5.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ5.setA(1163.8); MQ5.setB(-3.874); // Configurate the ecuation values to get H2 concentration
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MQ5.setR0(71.100304);
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MQ6.init();
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MQ6.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ6.setA(2127.2); MQ6.setB(-2.526); // Configurate the ecuation values to get CH4 concentration
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MQ6.setR0(13.4285714);
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MQ7.init();
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MQ7.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ7.setA(99.042); MQ7.setB(-1.518); // Configurate the ecuation values to get CO concentration
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MQ7.setR0(4);
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MQ8.init();
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MQ8.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ8.setA(976.97); MQ8.setB(-0.688); // Configurate the ecuation values to get H2 concentration
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MQ8.setR0(1);
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MQ9.init();
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MQ9.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
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MQ9.setA(1000.5); MQ9.setB(-2.186); // Configurate the ecuation values to get LPG concentration
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MQ9.setR0(9.42857143);
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//Print in serial monitor
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Serial.print("MQ2 to MQ9 - test program");
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}
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void loop()
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{
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// Testing MQ2 LPG
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ratio = {};
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expectedValue = {};
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// Testing MQ3 Benzene
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// Testing MQ4 CH4
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// Testing MQ5 H2
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// Testing MQ6 CH4
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// Testing MQ7 CO
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// Testing MQ8 H2
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// Testing MQ9 LPG
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}
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double calculatePercentualError(double expectedValue, double calculatedValue)
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{
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// Return the diference between two measures
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return abs(calculatedValue-expectedValue)/expectedValue
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}
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