Automatic gas detection system
- 2. OBJECTIVES OF THE PROJECT • Detect Gas Leakage (like LPG) using LPG Gas Sensor and Arduino. • Sound Alarm - produce sound alert on gas leak. • Glow an Emergency LED light. • Setup an Bluetooth based Alert Mechanism using a Bluetooth Module.
- 3. COMPONENTS Arduino Uno LPG gas sensor module 2 LEDs Buzzer 1k Resistors Bread board Jumper Wires Bluetooth module HC-05
- 4. BLOCK DIAGRAM DESCRIPTION • MQ-5 LPG SENSOR To sense LPG (use Analog Out to detect level status) • ARDUINO UNO i)To read MQ5 output and detect Gas Leak (through level comparison). ii)To activate outputs upon gas leak – sound alarm and LED blinking. iii)To send alert commands to bluetooth module HC-05. • Buzzer When buzzer is blowing, this indicates the leakage of LPG gas. It is 12 V DC operated buzzer. • LED When LED is glowing, this indicates the leakage of LPG gas. It is
- 5. DETECTION SYSTEM GAS DETECTOR UNIT MQ-05 THE OUTPUT OF THIS SENSOR IS “HIGH” AT NORMAL CONDITION. THE OUTPUT GOES LOW, WHEN IT SENSES THE LPG.
- 6. CONTROL UNIT ARDUINO UNO -BRAIN OF THE WHOLE SETUP BUILT IN CHARGER AND DC BATTERY BACKUP OF 5v DC BATTERY MONITORING SYSTEM INPUT TERMINAL FOR SINGLE PHASE AC SUPPLY OUTPUT WIRES FOR COMMUNICATION WITH DETECTION SYSTEM AND ALARM SYSTEM
- 7. ALARM AND COMMUNICATION SYSTEM BUZZER AND BRIGHT RED LED FOR PHYSICAL NOTIFICATION OF LPG GAS LEAK AND DC BATTERY STATUS. AN HC 05 BLUETOOTH MODULE FOR COMMUNICATION WITH NEARBY SMARTPHONE OR SERVER.
- 8. • It contains Arduino board, LPG GAS Sensor Module, 3 resistors and a buzzer. • Arduino controls the whole process of this system like reading LPG Gas sensor module output, sending signal to the Red LED to glow. • LPG gas sensor module's A0 pin is directly connected to pin A0 of Arduino. • Vcc and GND are connected to Vcc and GND of Arduino. • A buzzer is connected with Arduino pin number 13. Circuit description
- 9. A LPG gas sensor module MQ-5 is used to detect LPG Gas. When Arduino gets a HIGH pulse An emergency light or LED light glows from LPG gas module. Activates buzzer which beeps again and again until the gas detector module doesn't sense the gas in environment. It sends a notification “ALERT” to the app of the device with the help of Bluetooth module HC-05. When the detector module gives LOW pulse to Arduino, then green LED light starts glowing and the app shows “OK”. Working principle
- 10. APPLICATION Home security This system is designed mainly for home (especially kitchen area) to prevent accidents due to gas leak. Automation It can be enhanced to automate electrical cut off process to prevent short circuit. Enhancement It can be enhanced to measure specific gas levels to use in industrial application.
- 11. FUTURE POSSIBILITIES We may also add a feedback system to check the operation of sensor and microcontroller time to time. The dc backup system being idle may get damaged so to check its condition proper dc voltage monitoring system needs to be employed. As the buzzer causes vibration and works at high voltage which can cause sparking and lead to fire, thus the buzzer must be placed in proper fire proof enclosure.
- 12. SYSTEM FAILURE GAS DETECTOR – IT REQUIRES A MINIMUM TEMPERATURE FOR WORKING. CONTINIOUS USE CAN CAUSE FADING OF SENSITIVITY OF SENSOR. PROBLEM IN MICROCONTROLLER WORKING AND VOLTAVE SENSING AC-DC CONVERSION SYSTEM AND DC BATTERY BACKUP BLUETOOTH MODULE COMMUNICATION FAILURE
- 13. HOW TO TACKLE THE WHOLE SYSTEM NEEDS AN CONTIONOUS AND PERIODIC HEALTH ANALYSIS TO BE DONE AND REPORT SENT TO SERVER NEED TO SETUP AN AUTOMATIC GAS SENSOR SENSITIVITY ANALYSIS SYSTEM DC BACKUP MAY GET DAMAGED DUE TO CONTINIOUS IDLENESS THUS POWER SUPPLY MUST BE EXCHANGED FROM TIME TO TIME. DC BACKUP OUTPUT VOLTAGE ANALYSIS TO BE DONE.
- 14. CONCLUSION……. The LPG is now being used in everywhere – at home, car and even in hospital, hotel etc. There are many cases of major accidents caused by Gas leakage. Since there are provision of ‘Buzzer” as well as “ALERT notification” which is visible in mobile through Bluetooth form some distance, hence its usefulness will be tremendous. With our project we could be able to prevent all types of accidents due to leakage of LPG.
- 15. • SAURABH BASAK • SAYAN SARKAR • SIDDHARTHA BASU • SPANDAN PAUL