The term data logger (also sometimes referred to as a data recorder) is commonly used to describe a self-contained, standalone data acquisition system or device. These products are comprised of a number of analog and digital inputs that are monitored, and the results or conditions of these inputs is then stored on some type of local memory. In this paper, a Temperature, Gas Data Logging System is designed to record and display sensor parameters continuously. It uses a temperature sensor to sense the surrounding temperature and MQ2 gas sensor to store data with Date & TIME in SD card(MMC) and also displays the temperature on the PC with the help of Arduino Board. The Real Time Clock maintains date and time parameters.
The methodology for designing the temperature, gas data logging system is discussed in detail. The code to implement the functionality of the logging system is modeled and simulated using proteus simulator. The LM35 sensor & MQ2 sensor is interfaced with the microcontroller Atmega328. The microcontroller displays gas concentration value on 20×4 lcd with date and time. It also records data in memory card module. We can check memory card file in excel sheet in PC. The same data is also send to an android phone using bluetooth module.
Software Tools:
• ARDUINO IDE ( Compiler )
• EMBDDED CPP CODE
• PROTEUS SIMULATOR
Hardware :
- ATMEGA328 Microcontroller
- LM35 Sensor
- MQ2 Gas Sensor Module
- 16*2 LCD DISPLAY
- RTC DS1307
- SD Card Module
- Bluetooth Module
- Regulated Power Supply