Mikroelektronika d.o.o.
Alkohol-Klickbrett
Alkohol-Klickbrett
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Overview
Fügen Sie Ihrem Design mit dem Alcohol Click Board™ einen hochempfindlichen Alkoholgassensor hinzu. Die Platine enthält einen hochempfindlichen MQ-3-Alkoholsensor zur Erkennung der Alkoholkonzentration. Die aus einer anorganischen Verbindung namens Zinndioxid (SnO2) bestehende Gassensorschicht der MQ-3-Sensoreinheit weist in sauberer Luft eine geringere Leitfähigkeit auf. Die Empfindlichkeit steigt jedoch mit steigendem Alkoholgasgehalt.
Das Alcohol Click Board™ verfügt über ein kleines Potentiometer zur Kalibrierung, mit dem der Benutzer seine eigene Skala festlegen und den Lastwiderstand des Sensorkreises anpassen kann. Über die MikroBUS-Leitung AN (OUT) kommuniziert das Alcohol Click Board™ mit der Zielplatine. Diese Platine ist nur für die Verwendung einer 5-V-Stromversorgung ausgelegt.
Es bietet eine sehr hohe Empfindlichkeit und schnelle Reaktion auf alkoholische Gase und ist für die Erkennung von Alkoholkonzentrationen von 0,04 bis 4 mg/l ausgelegt. Es ist die ideale Wahl für tragbare Alkoholdetektoren und Atemalkoholtester zur Bestimmung des BAC (Blutalkoholgehalt).
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The Alcohol Click Board™ has a high sensitivity to alcohol and it can be used to detect alcohol in concentrations from 0.04 to 4mg/l.
Alcohol click carries an MQ-3 Semiconductor sensor for alcohol. The click is designed to run on a 5V power supply only. It communicates with the target microcontroller through the AN pin on the mikroBUS™ line.
MQ-3 Sensor Features
The gas sensing layer on the sensor unit is made of Tin dioxide (SnO2), an inorganic compound that has lower conductivity in clean air. The conductivity increases as the levels of alcohol gas rise.
Sensor Calibration
To calibrate the sensor for the environment you'll be using it in, the Alcohol Click Board™ has a small potentiometer that allows you to adjust the Load Resistance of the sensor circuit.
Key Features
- MQ-3 sensor
- Concentration: 0.04-4mg/l alcohol
- Sensitivity: Rs(in air)/Rs(0.4mg/LAlcohol)≥5
- Interface: Analog
- 5V power supply
Software Support
Application Task
Reads the ADC value and prints in two forms (DEC and HEX).
void application_task ( void ) {
uint16_t alcohol_an_value = 0;
if ( alcohol_read_an_pin_value ( &alcohol, &alcohol_an_value ) != ADC_ERROR ) {
log_printf( &logger, " ADC Value : %u\r\n", alcohol_an_value );
}
float alcohol_an_voltage = 0;
if ( alcohol_read_an_pin_voltage ( &alcohol, &alcohol_an_voltage ) != ADC_ERROR ) {
log_printf( &logger, " AN Voltage : %.3f[V]\r\n\n", alcohol_an_voltage );
}
Delay_ms( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended way), downloaded from our LibStock™ or found on Mikroe GitHub account.
Other Mikroe Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Alcohol
Additional Notes and Information
Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.
Software Support
Application Task
Reads the ADC value and prints in two forms (DEC and HEX).
void application_task ( void ) {
uint16_t alcohol_an_value = 0;
if ( alcohol_read_an_pin_value ( &alcohol, &alcohol_an_value ) != ADC_ERROR ) {
log_printf( &logger, " ADC Value : %u\r\n", alcohol_an_value );
}
float alcohol_an_voltage = 0;
if ( alcohol_read_an_pin_voltage ( &alcohol, &alcohol_an_voltage ) != ADC_ERROR ) {
log_printf( &logger, " AN Voltage : %.3f[V]\r\n\n", alcohol_an_voltage );
}
Delay_ms( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended way), downloaded from our LibStock™ or found on Mikroe GitHub account.
Other Mikroe Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Alcohol
Additional Notes and Information
Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.
Frequently Asked Questions
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