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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
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MQUnifiedsensor Library - reading an MQ131
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Demonstrates the use a MQ131 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 pin A0 //Analog input 0 of your arduino
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#define type 131 //MQ131
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//#define calibration_button 13 //Pin to calibrate your sensor
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//Declare Sensor
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MQUnifiedsensor MQ131(pin, type);
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//Variables
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float NOx, CL2, O3;
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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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MQ131.inicializar();
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//pinMode(calibration_button, INPUT);
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}
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void loop() {
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MQ131.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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MQ131.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 = MQ131.calibrate();
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MQ131.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 = MQ131.readSensor("", true); // Return O3 concentration
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// Options, uncomment where you need
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NOx = MQ131.readSensor("NOx"); // Return NOx concentration
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CL2 = MQ131.readSensor("CL2"); // Return CL2 concentration
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O3 = MQ131.readSensor("O3"); // Return O3 concentration
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Serial.println("***************************");
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Serial.println("Lectures for MQ-131");
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Serial.print("Volt: ");Serial.print(MQ131.getVoltage(false));Serial.println(" V");
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Serial.print("R0: ");Serial.print(MQ131.getR0());Serial.println(" Ohm");
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Serial.print("NOx: ");Serial.print(NOx,2);Serial.println(" ppm");
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Serial.print("CL2: ");Serial.print(CL2,2);Serial.println(" ppm");
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Serial.print("O3: ");Serial.print(O3,2);Serial.println(" ppm");
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Serial.println("***************************");
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}
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