PC and Analog MQ-3 Alcohol Sensor based Wireless Alcohol Monitoring System with ATmega32 using Series 2 Zig Bee
In this project, we will learn about PC and Analog MQ-3 Alcohol Sensor based Wireless Alcohol Monitoring System with AVR ATmega32 Microcontroller using Series 2 Zig Bee. Here, we will display and monitor the concentration of Alcohol wirelessly from a PC/Laptop using Zig Bee.
Since, the output of the Analog MQ-3 Alcohol Sensor is analog in nature and these analog signals cannot be processed directly by the ATmega32 microcontroller. So, first this signal needs to be converted to digital value to be processed by the microcontroller. The conversion can be done with the help of ADC of the AVR ATmega32 microcontroller. After converting the analog signal to digital, the microcontroller will send the digital value of Analog MQ-3 Alcohol Sensor to the Zig Bee through USART communication protocol. This Zig Bee transmits the digital value of Analog MQ-3 Alcohol Sensor wirelessly to another Zig Bee connected with the PC/Laptop. At the PC/Laptop end, Zig Bee receives the digital value of Analog MQ-3 Alcohol Sensor and transmits that to the PC/Laptop through a USB cable. In the PC, the RealTerm Software receives the digital value of Analog MQ-3 Alcohol Sensor and displays it. In this way, the concentration of Alcohol is monitored from the PC/Laptop.
Now, we will place cotton dipped in Alcohol/Spirit near Analog MQ-3 Alcohol Sensor and we will see the change in concentration of Alcohol in PC.