Gas Leakage Detector using Arduino with SMS Alert - Engineering Project
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The document describes a gas leakage detector project using an MQ5 sensor, Arduino, GSM module, and an LCD display to monitor and alert for gas leaks. It details the components, circuit design, program explanations, and functionalities including SMS alerts to two mobile numbers, a sound alarm, and status messages on an LCD. The project aims to enhance safety in homes and industrial settings by detecting LPG and potentially other gases.
Gas Leakage Detector using Arduino with SMS Alert - Engineering Project
- 1. GAS LEAKAGE DETECTOR USING ARDUINO WITH SMS ALERT GAS LEAKAGE DETECTOR USING ARDUINO AND MQ5 SENSOR – WITH SMS ALERT (USING GSM MODULE) AND SOUND ALARM - ENGINEERING MAIN PROJECT
- 2. OBJECTIVES OF THE PROJECT • Detect Gas Leakage (like LPG) using MQ5 Sensor and Arduino • Setup an SMS based Alert Mechanism using GSM Module • Send 3 SMS (3 alert messages) to 2 specified mobile numbers • Sound Alarm – produce sound alert on gas leak • Display status in an LCD using a 16×2 LCD module.
- 3. PLANNING OF COMPONENTS • MQ5 – to sense LPG (use Digital Out to detect level status) • Arduino • To read MQ5 output and detect Gas Leak (through level comparison) • To activate outputs upon gas leak – sound alarm and sms alert • To send AT Commands to GSM Module • To send Status message commands to LCD Module • To Turn ON and OFF Sound Alarm • GSM Module – for GSM Communication and to send SMS to mobile numbers • LCD Module – to display status messages • Speaker – to produce Alarm Sound
- 4. ARDUINO • Arduino Uno – an electronic prototyping platform/board based on Atmega AVR Microcontroller – Atmega328P (8 bits, 16 Mhz) • Operates on +5 Volts • 14 Digital I/O Pins (of which 6 are PWM) • 6 Analog Input Pins • 32 KB Flash Memory and 1KB EEPROM • Serial Communication Enabled
- 5. MQ5 SENSOR MODULE • MQ5 – is a generic gas sensor used to detect LPG presence • The module has Digital Out and Analog Out • Detects LPG from 200ppm to 10000ppm • Operated on +5 Volts • Can be used detect other gases like Methane and Alcohol as well
- 6. GSM MODULE • SIM 900 GSM Module – is used to send SMS alerts upon gas leak • Serial Communication is employed • AT COMMANDS – are used to communicate with GSM Module
- 8. CIRCUIT EXPLANATION-1 • Interfacing MQ5 Sensor to Arduino • Connecting Digital Out of MQ5 to pin 7 • Interfacing GSM Module to Arduino • Connect to PWM pins 9 and 10 of Arduino (using SoftwareSerial) • Tx of GSM Module to 9 and Rx of GSM Module to 10 • Interfacing Speaker to Arduino • 2N2222 is used as driving transistor • Connect to Pin 8 of Arduino
- 9. CIRCUIT EXPLANATION-2 • Interfacing LCD Module to Arduino • 16x2 LCD Module is used • Data Lines (DB4,DB5,DB6,DB7) connected to 5,4,3,2 pins of Arduino (in order) • Enable Pin connected to 11 and RS (Register Select) connected to 12 • Backlit LED is connected to Vcc (+5v) through a 560 ohms current limiting resistor • Contrast – is adjusted by connecting VEE to a 10K Pot and +5V
- 10. PROGRAM EXPLANATION - 1 • Important Initializations and Setup • Sensor MQ5 is assigned to pin 7 using variable ‘sensor’ • Sound Alarm Speaker is assigned to pin 8 using ‘speaker’ • ‘sensor’ – configured as Input • ‘speaker’ – configured as output • Software Serial communication is used with PWM pins of Arduino • <SoftwareSerial.h> - header library is made use of!
- 11. PROGRAM EXPLANATION -2 • Important Variables • sms_count – variable used to limit number of SMS • Gas_Leak_Status – variable to identify ‘gas leak’ occurrence status • gas_value – temporary variable to store gas level fetched from sensor MQ5 • Gas_alert_val – to store fetched value and to compare with set limit value (during Scanning for Gas Leak) • Gas_shut_val – to store fetched value and to compare with set limit value (during checking for Gas Shut Down Process)
- 12. PROGRAM EXPLANATION-3 • Important Subroutines • CheckGas() – has the following functions • Scans for gas level by calling ScanGasLevel() inner subroutine • If scanned gas value ‘Gas_alert_val==LOW’ – alert actions are invoked by calling SetAlert() inner subroutine • Displays status messages on LCD Module – for Scanning Process and Gas Leak Alert • CheckShutDown() – is to check if gas leak has been eliminated • Scans for present gas level by calling ScanGasLevel() inner subroutine • If scanned value stored in variable ‘Gas_shut_val==HIGH’ – gas leak is eliminated • Immediately stops alarm – with digitalWrite(speaker,LOW) • Resets the gas leak status variable and sms_count variable – to reactivate Gas Leak Scanning Process and SMS Alert mechanism
- 13. PROGRAM EXPLANATION-4 • Important Inner Subroutines • ScanGasLevel() • Scans the gas level from sensor MQ5 and stores to temporary variable gas_level • SetAlert() • Activates sound alarm through digitalWrite(speaker,HIGH) • Sends 3 SMS to 2 Mobile numbers by calling SendTextMessage() inner subroutine • Outputs status message commands to LCD Module • SendTextMessage() • Subroutine to send AT Commands to GSM Module for sending SMS
- 14. APPLICATIONS • Home Security – can be used in homes (especially kitchen area) to prevent accidents due to gas leak • Industrial Security – can be used in sensitive areas to prevent any accidents • Enhancement – can be enhanced to measure specific gas levels to use in industrial applications • Automation – can be enhanced to automate electrical cut off process to prevent short circuit
- 15. OUTPUT PHOTOGRAPH • Read Full Project Here- Gas Leakage Detector using Arduino
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