From 1311d9446d8c3cf6b979c6922ea4e8dbbf9ea867 Mon Sep 17 00:00:00 2001 From: miguel5612 Date: Thu, 26 Mar 2020 12:37:12 -0500 Subject: [PATCH] Updated examples to MQ-4 --- examples/MQ-2/MQ-2.ino | 3 -- examples/MQ-3/MQ-3.ino | 15 +++++-- examples/MQ-4/MQ-4.ino | 100 ++++++++++++++++++++--------------------- 3 files changed, 59 insertions(+), 59 deletions(-) diff --git a/examples/MQ-2/MQ-2.ino b/examples/MQ-2/MQ-2.ino index 3e88907..6f0484e 100644 --- a/examples/MQ-2/MQ-2.ino +++ b/examples/MQ-2/MQ-2.ino @@ -31,9 +31,6 @@ //Declare Sensor MQUnifiedsensor MQ2(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type); -//Variables -float CH4, LPG, CO, Alcohol, Hexane, Benzine; - void setup() { //Init the serial port communication - to debug the library Serial.begin(9600); //Init serial port diff --git a/examples/MQ-3/MQ-3.ino b/examples/MQ-3/MQ-3.ino index 795a008..66f7390 100644 --- a/examples/MQ-3/MQ-3.ino +++ b/examples/MQ-3/MQ-3.ino @@ -31,9 +31,6 @@ //Declare Sensor MQUnifiedsensor MQ3(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type); -//Variables -float CH4, LPG, CO, Alcohol, Hexane, Benzine; - void setup() { //Init the serial port communication - to debug the library Serial.begin(9600); //Init serial port @@ -41,7 +38,17 @@ void setup() { //Set math model to calculate the PPM concentration and the value of constants MQ3.setRegressionMethod("Exponential"); //_PPM = a*ratio^b MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values to get Benzene concentration - + /* + Exponential regression: + Gas | a | b + LPG | 44771 | -3.245 + CH4 | 2*10^31| 19.01 + CO | 521853 | -3.821 + Alcohol| 0.3934 | -1.504 + Benzene| 4.8387 | -2.68 + Hexane | 7585.3 | -2.849 + */ + // Calibration setup MQ3.setR0(3.86018237); diff --git a/examples/MQ-4/MQ-4.ino b/examples/MQ-4/MQ-4.ino index 5e80018..1c9a6fe 100644 --- a/examples/MQ-4/MQ-4.ino +++ b/examples/MQ-4/MQ-4.ino @@ -9,6 +9,10 @@ modified 23 May 2019 by Miguel Califa + Updated library usage + modified 26 March 2020 + by Miguel Califa + This example code is in the public domain. */ @@ -17,65 +21,57 @@ #include //Definitions +#define placa "Arduino UNO" +#define Voltage_Resolution 5 #define pin A0 //Analog input 0 of your arduino -#define type 4 //MQ4 +#define type "MQ-4" //MQ4 +#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO //#define calibration_button 13 //Pin to calibrate your sensor //Declare Sensor -MQUnifiedsensor MQ4(pin, type); - -//Variables -float CH4, LPG, CO, Alcohol, smoke; +MQUnifiedsensor MQ4(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type); void setup() { + //Init the serial port communication - to debug the library Serial.begin(9600); //Init serial port - //init the sensor - /***************************** MQInicializar**************************************** - Input: pin, type - Output: - Remarks: This function create the sensor object. - ************************************************************************************/ - MQ4.inicializar(); - //pinMode(calibration_button, INPUT); + + //Set math model to calculate the PPM concentration and the value of constants + MQ4.setRegressionMethod("Exponential"); //_PPM = a*ratio^b + MQ4.setA(4.8387); MQ4.setB(-2.68); // Configurate the ecuation values to get Benzene concentration + /* + Exponential regression: + Gas | a | b + LPG | 3811.9 | -3.113 + CH4 | 1012.7 | -2.786 + CO | 200000000000000 | -19.05 + Alcohol| 60000000000 | -14.01 + smoke | 30000000 | -8.308 + */ + + + // Calibration setup + MQ4.setR0(3.86018237); + + /* + //If the RL value is different from 10K please assign your RL value with the following method: + MQ4.setRL(10); + */ + + /***************************** MQ Init ********************************************/ + //Remarks: Configure the pin of arduino as input. + /************************************************************************************/ + MQ4.init(); + /***************************** MQ Init ********************************************/ + //Input: setup flag, if this function are on setup will print the headers (Optional - Default value: False) + //Output: print on serial port the information about sensor and sensor readings + //Remarks: Configure the pin of arduino as input. + /************************************************************************************/ + MQ4.serialDebug(true); } void loop() { - MQ4.update(); // Update data, the arduino will be read the voltaje in the analog pin - /* - //Si el valor de RL es diferente a 10K por favor asigna tu valor de RL con el siguiente metodo: - MQ4.setRL(10); - */ - /* - //Rutina de calibracion - Uncomment if you need (setup too and header) - if(calibration_button) - { - float R0 = MQ4.calibrate(); - MQ4.setR0(R0); - } - */ - /***************************** MQReadSensor **************************************** - Input: Gas - Serial print flag - Output: Value in PPM - Remarks: This function use readPPM to read the value in PPM the gas in the air. - ************************************************************************************/ - //Read the sensor and print in serial port - //Lecture will be saved in lecture variable - //float lecture = MQ4.readSensor("", true); // Return CH4 concentration - // Options, uncomment where you need - CH4 = MQ4.readSensor("CH4"); // Return CH4 concentration - LPG = MQ4.readSensor("LPG"); // Return LPG concentration - CO = MQ4.readSensor("CO"); // Return CO concentration - Alcohol = MQ4.readSensor("Alcohol"); // Return Alcohol concentration - smoke = MQ4.readSensor("smoke"); // Return smoke concentration - - Serial.println("***************************"); - Serial.println("Lectures for MQ-4"); - Serial.print("Volt: ");Serial.print(MQ4.getVoltage(false));Serial.println(" V"); - Serial.print("R0: ");Serial.print(MQ4.getR0());Serial.println(" Ohm"); - Serial.print("CH4: ");Serial.print(CH4,2);Serial.println(" ppm"); - Serial.print("LPG: ");Serial.print(LPG,2);Serial.println(" ppm"); - Serial.print("CO: ");Serial.print(CO,2);Serial.println(" ppm"); - Serial.print("Alcohol: ");Serial.print(Alcohol,2);Serial.println(" ppm"); - Serial.print("smoke: ");Serial.print(smoke,2);Serial.println(" ppm"); - Serial.println("***************************"); -} + MQ4.update(); // Update data, the arduino will be read the voltage on the analog pin + MQ4.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup + MQ4.serialDebug(); // Will print the table on the serial port + delay(500); //Sampling frequency +} \ No newline at end of file