Alcohol Gas Detection Troubles? Signal Turns Negative, Sensor Malfunctions? Remember These 3 Taboo Practices!

Alcohol Gas Detection Troubles? Signal Turns Negative, Sensor Malfunctions? Remember These 3 Taboo Practices!

Have you encountered these frustrating issues when detecting alcohol? Clearly following the procedure, yet the All Gas sensor suddenly outputs a negative signal? After detecting high concentrations of alcohol, the sensor takes a long time to return to normal? These problems are actually related to your lack of attention to the “internal reaction logic of … Read more

Design of an Alcohol Detection System Based on the 51 Microcontroller

Design of an Alcohol Detection System Based on the 51 Microcontroller

Abstract: This article designs a portable alcohol tester centered around the STC89C51 microcontroller, utilizing the MQ-3 semiconductor alcohol sensor in conjunction with the ADC0832 analog-to-digital conversion chip to achieve real-time alcohol concentration measurement and threshold alarm functionality. The system displays the current concentration and alarm threshold on an LCD1602. When the concentration exceeds the threshold, … Read more