alexey.zholtikov/MQSensorsLib
1
0
Fork 0
mirror of https://github.com/miguel5612/MQSensorsLib.git synced 2025-07-25 21:51:04 +03:00
Code Issues Packages Projects Releases Wiki Activity

Updated and fixed typo examples

Browse Source
This commit is contained in:
miguel5612
2022-03-20 12:53:36 -05:00
parent 990e6878ef
commit 07b6948f76
28 changed files with 302 additions and 302 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
examples/MQ-9-ALL/MQ-9-ALL.ino
View File

@ -15,7 +15,7 @@
Wiring:
https://github.com/miguel5612/MQSensorsLib_Docs/blob/master/static/img/MQ_Arduino.PNG
Please take care, arduino A0 pin represent the analog input configured on #define pin
Please make sure arduino A0 pin represents the analog input configured on #define pin
This example code is in the public domain.
@ -53,31 +53,31 @@ void setup() {
*/
/***************************** MQ CAlibration ********************************************/
// Explanation:
// In this routine the sensor will measure the resistance of the sensor supposing before was pre-heated
// and now is on clean air (Calibration conditions), and it will setup R0 value.
// We recomend execute this routine only on setup or on the laboratory and save on the eeprom of your arduino
// This routine not need to execute to every restart, you can load your R0 if you know the value
// In this routine the sensor will measure the resistance of the sensor supposedly before being pre-heated
// and on clean air (Calibration conditions), setting up R0 value.
// We recomend executing this routine only on setup in laboratory conditions.
// This routine does not need to be executed on each restart, you can load your R0 value from eeprom.
// Acknowledgements: https://jayconsystems.com/blog/understanding-a-gas-sensor
Serial.print("Calibrating please wait.");
float calcR0 = 0;
for(int i = 1; i<=10; i ++)
{
MQ9.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ9.update(); // Update data, the arduino will read the voltage from the analog pin
calcR0 += MQ9.calibrate(RatioMQ9CleanAir);
Serial.print(".");
}
MQ9.setR0(calcR0/10);
Serial.println(" done!.");
if(isinf(calcR0)) {Serial.println("Warning: Conection issue founded, R0 is infite (Open circuit detected) please check your wiring and supply"); while(1);}
if(calcR0 == 0){Serial.println("Warning: Conection issue founded, R0 is zero (Analog pin with short circuit to ground) please check your wiring and supply"); while(1);}
if(isinf(calcR0)) {Serial.println("Warning: Conection issue, R0 is infinite (Open circuit detected) please check your wiring and supply"); while(1);}
if(calcR0 == 0){Serial.println("Warning: Conection issue found, R0 is zero (Analog pin shorts to ground) please check your wiring and supply"); while(1);}
/***************************** MQ CAlibration ********************************************/
Serial.println("** Lectures from MQ-9 ****");
Serial.println("** Values from MQ-9 ****");
Serial.println("| LPG | CH4 | CO |");
}
void loop() {
MQ9.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ9.update(); // Update data, the arduino will read the voltage from the analog pin
/*
Exponential regression:
GAS | a | b
@ -86,14 +86,14 @@ void loop() {
CO | 599.65 | -2.244
*/
MQ9.setA(1000.5); MQ9.setB(-2.186); // Configurate the ecuation values to get LPG concentration
float LPG = MQ9.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
MQ9.setA(1000.5); MQ9.setB(-2.186); // Configure the equation to to calculate LPG concentration
float LPG = MQ9.readSensor(); // Sensor will read PPM concentration using the model, a and b values set previously or from the setup
MQ9.setA(4269.6); MQ9.setB(-2.648); // Configurate the ecuation values to get LPG concentration
float CH4 = MQ9.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
MQ9.setA(4269.6); MQ9.setB(-2.648); // Configure the equation to to calculate LPG concentration
float CH4 = MQ9.readSensor(); // Sensor will read PPM concentration using the model, a and b values set previously or from the setup
MQ9.setA(599.65); MQ9.setB(-2.244); // Configurate the ecuation values to get LPG concentration
float CO = MQ9.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup
MQ9.setA(599.65); MQ9.setB(-2.244); // Configure the equation to to calculate LPG concentration
float CO = MQ9.readSensor(); // Sensor will read PPM concentration using the model, a and b values set previously or from the setup
Serial.print("| "); Serial.print(LPG);
Serial.print(" | "); Serial.print(CH4);