mirror of
https://github.com/miguel5612/MQSensorsLib.git
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151 lines
6.4 KiB
C++
151 lines
6.4 KiB
C++
//Include the library
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#include <MQUnifiedsensor.h>
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// Wiring NOT required, only an arduino or esp8266 board
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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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//Include the library
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#include <MQUnifiedsensor.h>
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/************************Hardware Related Macros************************************/
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#define Board ("Arduino UNO")
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#define Pin (A3) //Analog input 3 of your arduino
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/***********************Software Related Macros************************************/
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#define Type ("MQ-3") //MQ3
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#define Voltage_Resolution (5)
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#define ADC_Bit_Resolution (10) // For arduino UNO/MEGA/NANO
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//Declare Sensor
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MQUnifiedsensor mySensor(Board, Voltage_Resolution, ADC_Bit_Resolution, Pin, Type);
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/*****************************Globals***********************************************/
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double ratio[4] = {};
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double expectedValue[4] = {};
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double calculatedValues[4] = {};
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double error[4] = {};
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/**************************Object_Sensor********************************************/
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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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mySensor.init();
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//Print in serial monitor
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Serial.println("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[0] = 1.8; ratio[1] = 1.05; ratio[2] = 0.8; ratio[3] = 0.5;
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expectedValue[0] = 200; expectedValue[1] = 500; expectedValue[2] = 1000; expectedValue[3] = 3000;
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testSensor("MQ-2", 574.25, -2.222);
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// Testing MQ3 Benzene
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ratio[0] = 4; ratio[1] = 3; ratio[2] = 1; ratio[3] = 0.8;
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expectedValue[0] = 0.1; expectedValue[1] = 0.21; expectedValue[2] = 4; expectedValue[3] = 10;
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testSensor("MQ-3", 4.8387, -2.68);
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// Testing MQ4 CH4
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ratio[0] = 1.9; ratio[1] = 1; ratio[2] = 0.6; ratio[3] = 0.42;
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expectedValue[0] = 200; expectedValue[1] = 1000; expectedValue[2] = 5000; expectedValue[3] = 10000;
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testSensor("MQ-4", 1012.7, -2.786);
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// Testing MQ5 H2
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ratio[0] = 1.8; ratio[1] = 1.3; ratio[2] = 0.8; ratio[3] = 0.68;
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expectedValue[0] = 200; expectedValue[1] = 500; expectedValue[2] = 3000; expectedValue[3] = 10000;
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testSensor("MQ-5", 1163.8, -3.874);
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// Testing MQ6 CH4
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ratio[0] = 2.6; ratio[1] = 1.9; ratio[2] = 1; ratio[3] = 0.8;
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expectedValue[0] = 200; expectedValue[1] = 500; expectedValue[2] = 2000; expectedValue[3] = 5000;
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testSensor("MQ-6", 2127.2, -2.526);
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// Testing MQ7 CO
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ratio[0] = 1.8; ratio[1] = 1; ratio[2] = 0.4; ratio[3] = 0.25;
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expectedValue[0] = 50; expectedValue[1] = 100; expectedValue[2] = 400; expectedValue[3] = 1000;
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testSensor("MQ-7", 99.042, -1.518);
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// Testing MQ8 H2
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ratio[0] = 2.6; ratio[1] = 1; ratio[2] = 0.21; ratio[3] = 0.03;
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expectedValue[0] = 500; expectedValue[1] = 1000; expectedValue[2] = 3000; expectedValue[3] = 10000;
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testSensor("MQ-8", 976.97, -0.688);
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// Testing MQ9 LPG
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ratio[0] = 2; ratio[1] = 1.4; ratio[2] = 0.7; ratio[3] = 0.23;
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expectedValue[0] = 200; expectedValue[1] = 500; expectedValue[2] = 2000; expectedValue[3] = 10000;
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testSensor("MQ-9", 1000.5, -2.186);
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// Testing MQ131 O3
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ratio[0] = 5; ratio[1] = 2; ratio[2] = 0.7; ratio[3] = 0.5;
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expectedValue[0] = 5; expectedValue[1] = 20; expectedValue[2] = 70; expectedValue[3] = 100;
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testSensor("MQ-131", 23.943, -1.11);
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// Testing MQ135 NH4
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ratio[0] = 2.6; ratio[1] = 1.9; ratio[2] = 1.1; ratio[3] = 0.75;
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expectedValue[0] = 10; expectedValue[1] = 20; expectedValue[2] = 100; expectedValue[3] = 200;
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testSensor("MQ-135", 102.2, -2.473);
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// Testing MQ303 Isobutano
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ratio[0] = 0.4; ratio[1] = 0.3; ratio[2] = 0.19; ratio[3] = 0.08;
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expectedValue[0] = 100; expectedValue[1] = 300; expectedValue[2] = 1000; expectedValue[3] = 10000;
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testSensor("MQ-303", 6.2144, -2.894);
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// Testing MQ309 CO
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ratio[0] = 6; ratio[1] = 5; ratio[2] = 4.3; ratio[3] = 4;
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expectedValue[0] = 1000; expectedValue[1] = 3000; expectedValue[2] = 5000; expectedValue[3] = 7000;
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testSensor("MQ-309", 1000000, -4.01);
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// Testing linear equation for MQ-4
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mySensor.setRegressionMethod(0); //_PPM = pow(10, (log10(ratio)-b)/a)
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ratio[0] = 2.5; ratio[1] = 1.5; ratio[2] = 0.9; ratio[3] = 0.65;
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expectedValue[0] = 200; expectedValue[1] = 1000; expectedValue[2] = 5000; expectedValue[3] = 10000;
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testSensor("MQ-4", -0.318, 1.133);
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while(1);
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}
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void testSensor(String SensorName, float A, float B)
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{
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mySensor.setA(A); mySensor.setB(B);
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calculatedValues[0] = mySensor.validateEcuation(ratio[0]);
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calculatedValues[1] = mySensor.validateEcuation(ratio[1]);
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calculatedValues[2] = mySensor.validateEcuation(ratio[2]);
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calculatedValues[3] = mySensor.validateEcuation(ratio[3]);
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error[0] = calculatePercentualError(expectedValue[0], calculatedValues[0]);
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error[1] = calculatePercentualError(expectedValue[1], calculatedValues[1]);
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error[2] = calculatePercentualError(expectedValue[2], calculatedValues[2]);
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error[3] = calculatePercentualError(expectedValue[3], calculatedValues[3]);
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Serial.print("Error(%) "); Serial.print(SensorName); Serial.print(": ");
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Serial.print(error[0]); Serial.print(" ");
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Serial.print(error[1]); Serial.print(" ");
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Serial.print(error[2]); Serial.print(" ");
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Serial.print(error[3]); Serial.print(" | Calculated(PPM): ");
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Serial.print(calculatedValues[0]); Serial.print(" ");
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Serial.print(calculatedValues[1]); Serial.print(" ");
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Serial.print(calculatedValues[2]); Serial.print(" ");
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Serial.print(calculatedValues[3]); Serial.print(" | Expected(PPM): ");
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Serial.print(expectedValue[0]); Serial.print(" ");
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Serial.print(expectedValue[1]); Serial.print(" ");
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Serial.print(expectedValue[2]); Serial.print(" ");
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Serial.print(expectedValue[3]); Serial.println(" | ");
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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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