LPG GAS DETECTION SYSTEM

BYAbhishek Singh(TI20223005)

Abhishek Mishra(T120223004)Amitabh Yadav(T120223018)

PROJECT GUIDE: PROF. SNEHAL MARATHE

Gas leak detection is the process of identifying potentially hazardous gas leaks by means of various sensors.

These sensors usually employ an audible alarm to alert people when a dangerous gas has been detected.

The total circuit units are arranged on PCB board.

INTRODUCTION

BLOCK DIAGRAM

CIRCUIT DIAGRAM

TM4C123GH6PM MICROCONTROLLER Tiva Launchpad BOB(break out board) of TM4C123GH6PZ MQ6 LCD DISPLAY LM35 MP3H6115A RHT MODULE LM358 TRANSISTOR BC547 USB VOLTAGE REGULATOR 1117 BUZZER PUSH BUTTONS LEDs PRESET

COMPONENTS USED IN THIS PROJECT

  An efficient and smooth working controller is needed to continuously

sense both leakage and level of the gas. And also fast response is require when leakage found .

Along with this the monitoring system must provide additional leakage information which can be used in further processing.

The detection system includes ARM CORTEX BASED microcontroller board which is CCS OR ECILPSE compatible with microcontroller chip TM4C123GH6PZ

TM4C123GH6PM Microcontroller

Schematic

BOB (TM4C123GHPZ)

PCB LAYOUT

BOB (TM4C123GHPZ)

  The LPG gas consists of isobutene, propane, methane, etc. A

sensitive, efficient gas sensor is required that senses only LPG gas contents and is less sensitive to other gases like cooking fumes, cigarettes, etc. Sensitive material of MQ-6 gas sensor is SnO2, which with lower conductivity in clean air

(MQ6) When the target combustible gas exist the sensor’s conductivity is higher along with the gas concentration rising. MQ-6 gas sensor has high sensitivity to Propane, Butane and LPG, also response to Natural gas.

The sensor could be used to detect different combustible gas, especially Methane; it is with low cost and suitable for different application. It senses the leakage of LPG gas and sends the alert signal to the microcontroller alternatively turn on Buzzer when it reaches the danger level.

GAS DETECTOR(MQ6)

The Tiva™ C Series TM4C123G Launchpad Evaluation Board (EK-TM4C123GXL) is a low-cost evaluation platform for ARM® Cortex™-M4F-based microcontrollers.

The Tiva C Series Launchpad design highlights the TM4C123GH6PMI microcontroller USB 2.0 device interface, hibernation module, and motion control pulse-width modulator (MC PWM) module.

The Tiva C Series Launchpad also features programmable user buttons and an RGB LED for custom applications

THE TIVA LAUNCH PAD

It is necessary requirement to put a display about system monitoring and controlling performance, which displays the various messages such as leakage of gas detection, booking of cylinder in case of refilling of cylinder .

Additionally the system also, displays the actions carried out in the microcontroller. For the work of displaying the alert messages Liquid crystal display (LCD) of 16*2 characters operating on +5 volt supply and operated 4-bit mode is implemented

LCD DISPLAY

A buzzer or beeper is a signaling device, usually electronic, typically used in automobiles, household appliances such as a microwave oven, or game shows .

BUZZER

ECLIPSE SOFTWARE

It is a cross compiler A cross compiler is similar to the compilers but we write a program for the target processor on the host processors (like computer of x86) ECLIPSE Software provides you with software development tools for the Arm cortex family of microcontrollers. Arm cortex project development cycle: - These are the steps to develop TM4C123GH6PM project using eclipse.

Create source files in C or assembly.Compile or assemble source files.Correct errors in source files.Link object files from compiler and assembler.Test linked application.

Our idea is to make a very accurate and cheap sensor which gives the precise readings we have interfaced mq6 (adc module ) with tiva cortex microcontroller

To pin 7 this ADC module detect the LPG gas leakage. Along the GPIO PIN PG7 we have interfaced buzzer SG1.the basic concept is as soon as gas leakage is sensed the GPIO PIN PG7 gets enable and the buzzer goes on with the sound of beep .

If somebody is away from the point of leakage of gas it will alert the person from disastrous .along with we have interfaced 16*2 lcd with data PINS D4,D5,D6,D7 to PD0,PD1,PD2,PD3(4bit) this LCD is used for displaying the status of gas leakage .this is useful for those who are deaf its also displays various parameters such pressure (MP3H6115A sensor ), temperature sensor(LM35),humidity

.

OPARATION OF THE CIRCUIT

DESIGN AND IMPLEMENTATION SHEMATIC OF BLOCK DIAGRAM

PCB BOARD LAYOUT

It is used in gas industries. It is used in mining of coal and

other materials. It is used in municipal gas

distribution It is used in nuclear power stations

APPLICATIONS

This monitoring system can be further enhanced by using Bluetooth in place of GSM to send the alert messages to user, which supports the another real-time application.

For industrial purposes mobile robot can be developed for detecting multiple gas concentrations.

Addition to gas sensor temperature sensor can also be used which detects the high pressure gas in cylinder pipe, display the alert SMS when high temperature is reached

FUTURE SCOPE

This monitoring and detection system is proposed mainly to meet the safety standards and to avoid fire accidents because of leakage.

An embedded system for hazardous gas detection has been implemented; here only two gases (LPG and Propane) have been detected for demo purpose. The gas sensors and the critical level of the respective gas should be known, and then this system can be implemented for detecting various gases either in domestic area such as places of educational institutions, residential and industrial areas which avoids endangering of human lives.

This system provides quick response rate and the diffusion of the critical situation can be made faster than the manual methods.

CONCLUSION

SOME GAS LEAKAGE SITUATIONS