Transcript ARM Based Gas Leakage Detection System

ARM Based Gas Leakage Detection
System
Student Name
Guide Name
USN NO
H.O.D Name
Name Of The College & Dept
 CONTENTS
1.
2.
3.
4.
5.
6.
7.
Abstract
Objectives
Block diagram
Methodology
Advantages & disadvantages
Applications
Conclusion
1. ABSTRACT
A wireless safety device for gas leakage detection is proposed. The device is
intended for use in household safety where appliances and heaters that use natural
gas and liquid petroleum gas (LPG) may be a source of risk. The system also can
be used for other applications in the industry or plants that depend on LPG and
natural gas in their operations. The system design consists of two main modules:
the detection and transmission module, and the receiving module. The detection
and transmitting module detects the change of gas concentration using a special
sensing circuit built for this purpose. This module checks if a change in
concentration of gas (es) has exceeded a certain pre-determined threshold. If the
sensor detects a change in gas concentration, it activates and audiovisual alarm
and sends a signal to the receiver module. The receiver module acts as a mobile
alarm device to allow the mobility within the house premises. The system was
tested using LPG and the alarm was activated as a result of change in
concentration.
2. OBJECTIVES
The primary objects of the present project to provide a novel means for safely
detecting any malfunction of a pressurized gas system in order to prevent
accumulation of combustible gases so that damage or explosion due to such an
accumulation of gases is prevented.
Another object of the present invention is to provide a novel safety means for
detecting the leakage of gas into the area of an appliance when the appliance is
in a shutdown condition and not in operation. Yet another object of the present
invention is to provide a novel gas detection and monitoring system which is
economical to manufacture and which may be readily installed in conventional
trailers, boats or the like which are normally dependent upon a stored supply of
pressurized gas. Typical installation areas being gas yards (Bullets), gas banks
with multi cylinders in manifold, user production departments / utility areas like
kitchens.
3. BLOCK DIAGRAM
BUFFER
RELAY
DRIVER
OUTPUT DEVICES
BUZZER
OR
DC MOTOR AS
WATER SPRINKLER
M
ALCOHOL SENSOR
OR
VISUAL
INDICATION
ARM PROCESSOR
16 X 2 DISPLAY
XBEE TX
+12 Volts
+5 Volts
GND
230 V, AC
Supply
TRANSFORMER
RECTIFIER
FILTER
REGULATOR
HARDWARE REQUIREMENTS:
ARM 7 / Cortex M3, LCD, Relay Driver, Relays, Resistors, Capacitors, LEDs, Crystal, Diodes, Transformer, Voltage Regulator,
Push Button.
SOFTWARE REQUIREMENTS:
Keil compiler uVision 4, Language: Embedded C or Assembly, WLPRO Programmer
BUFFER
DRIVER
RELAY
OUTPUT DEVICES
BUZZER
VISUAL
INDICATION
XBEE RX
ARM PROCESSOR
LCD DISPLAY
4. METHODOLOGY:
The transmitter will have the Gas sensor, when the gas is detected the it gives
the signal to the ARM , then the ARM will send the information to another
receiving station through Xbee which is in Police station or security office .
At the same time ARM will generate the out put that is fed to buffer IC 4050 ,
buffer stores and given to the driver IC 2003 in driver current will amplifies
and voltage will inverts with the help of Darlington circuit of driver IC to
drive the relay . Then signal is given to the output load for indication purpose
5. ADVANTAGES & DISADVANTAGES:
 ADVANTAGES:
1.Used in house as a LPG gas detector
2.It also detect alcohol so it is used as liquor tester.
3.The sensor has excellent sensitivity combined with a quick response time
DISADVANTAGES:
1.It is little sensitive to smoke then it is not perfectly reponse for LPG gas
detection.
2.Its sensitivity depends on Humidity and temperature.
6.APPLICATIONS:
1.Fire/Safety detection system
2.Gas leak alarm
3.Gas detector
7. CONCLUSION:
In this work we have proposed an efficient autonomous system for standoff
explosive detection poisonous gas. While comparing with traditional systems
have lot of advantages. The main advantages are its miniature size, low power
consumption, distributed operation, and easy implementation.
THANK YOU