PC and Analog MQ-2 Smoke Sensor based Wireless Smoke Monitoring System with ATmega32 and LCD Display using Series 2 Zig Bee
In this project, we will learn about PC and Analog MQ-2 Smoke Sensor based Wireless Smoke Monitoring System with AVR ATmega32 Microcontroller and LCD Display using Series 2 Zig Bee. Here, we will display and monitor the concentration of smoke wirelessly from a PC/Laptop using Zig Bee and 32X2 Alphanumeric LCD.
Since, the output of the Analog MQ-2 Smoke 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-2 Smoke Sensor to the Zig Bee through USART communication protocol. This Zig Bee transmits the digital value of Analog MQ-2 Smoke 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-2 Smoke 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-2 Smoke Sensor and displays it. Apart from PC/Laptop, microcontroller will display the Analog MQ-2 Smoke Sensor value in 32X2 Alphanumeric LCD. In this way, the concentration of smoke is monitored from the PC/Laptop wirelessly and from alphanumeric LCD.
Now, we will place a burning incense stick near Analog MQ-2 Smoke Sensor and we will see the change in concentration of smoke in PC and Alphanumeric LCD.