ADVANCED GAS DETECT AND ALERT SYSTEM

ukrainianlegalElectronics - Devices

Nov 2, 2013 (3 years and 10 months ago)

253 views




ADVANCED GAS DETECT AND ALERT SYSTEM


Hi friends!!!



This is the mini
-
project which I have done successfully. This is a Live Real
-
Time Project designed at low cost with high accuracy. It is easy to implement. This is
very much cost effective when compared to other devices in online. This Pro
ject is
designed to detect the LPG Gas Leakages and to alerts the users through Audio
-
Visual
Indications. This Project is designed to detect the
LPG& 4 other Dangerous Gases

from
a range 200(PPM) to 10,000 PPM. Whenever there is LPG concentration of 1000 p
pm
(parts per million) in the area. A buzzer is connected to produce audible alert signal. This
LPG Gas Sensor can be used to make wireless Gas leak detector in home security system
.
The LPG Gas Sensor Module is designed to enable LPG detection interface t
o
Microcontroller without ADC Channels. By providing a GSM modem we can
receive “
SMS ALERTS
” also…



































Output image & Video :








































ABSTRACT


LPG gas is supplied in pressurized steel
cylinders. As this gas is heavier than air, when it leaks
from a cylinder it flows along floor and tends to settle in low spots such as a basement. This can
cause fire or suffocation if not dealt with. Here is a circuit that detects the leakage of LPG gas
and alerts the user through audio
-
visual indications.




This LPG Gas Sensor (MQ6), ideal sensor for use to detect the presence of a
dangerous Liquefied petroleum gas (LPG) and it has high sensitivity to propane, butane,
isob
utene, natural gas. The sensor can also be used to detect combustible gases, especially
methane. This circuit can detect leakages in your Home, car or in a service station, storage tank
environment. This unit can be easily implemented to industrial level b
y upgrading its ranges.




This project is designed to detect the LPG from 200parts per million (PPM)
to 10,000 PPM. Whenever there is LPG concentration of 1000 ppm (parts per million) in the
area, the OUT pin of the sensor
module goes high. This signal drives timer IC 555, which is
wired as an astable multivibrator. The multivibrator basically works as a tone generator. A
buzzer is connected to produce audible alert signal.




This LPG Gas Se
nsor can be used to make wireless Gas leak detector in
home security system .The LPG Gas Sensor Module is designed to enable LPG detection
interface to Microcontroller without ADC Channels. By providing a GSM modem we can
receive “SMS ALERTS” also..



Desi
gn Of the Project:



In this project we have used MQ
-
6 gas sensor. Whenever LPG gas is leaked the sensor detects


and

it passes signal to timer circuit. Here we have used IC 555 timer which acts as astable
multivibrator.Then it will be given to Transistor driver circuit which activates buzzer and LED
and alerts


the user through audio
-
visual indications.

COMPONENTS U:


S
.no



Components used



Range/Type

Quantity

1

SEN
-
1327 gas sensor

200ppm
-
10,000ppm

1no

2

IC 555 TIMER (8 pin)


4.5 to 15 V(Vcc)

1no

3

Transistor

SL100

1no

4

Zener diode

5V

1no

5

Speaker

0.5W,8 Ω

ㅮo

6

Battery

9V

1no

7

LED

1V

1no

8

Capacitors

0.1uf

2no






















CIRCUIT DIAGRAM:

9

Resistors





Variable resistor

10kΩ
††††††††††††††††



4.7kΩ

1kΩ

22 Ω

560Ω



10kΩ

ㅮo



ㅮo

ㅮo

ㅮo

ㅮo



ㅮo



10

On /off switch


and Connecting
wires



______

______














SEN
-
1327 GAS Sensor Module




The SEN
-
1327 gas sensor module from RhydoLABZ,kochi is used in this circuit. This
LPG Gas Sensor (MQ6), ideal sensor for use to detect the presence of a dangerousLiquefied
petroleum gas (LPG) and it has high sensitivity to pr
opane, butane, isobutene, natural gas. The
sensor can also be used to detect combustible gases, especially methane. This sensor has a high
sensitivity and fast response time. The drive circuit is very simple. This circuit can detect
leakages in your Home,
car or in a service station, storage tank environment. This unit can be
easily implemented to industrial level by upgrading its ranges.

F
EATURES
:



Uses the MQ
-
6 LPG Gas Sensor



Easy SIP interface



Compatible with most microcontrollers we can upgrade this to
provide SMS alerts also



Onboard Status and Power LED



Onboard Pot for threshold setting



On board microcontroller



This sensor has a fast response time



Good sensitivity to Combustible gas in wide range



Long life and low cost



Simple drive circuit



High sensitiv
ity to Propane, Butane and LPG

Circuit Working:

Pin details of the gas sensor module are shown in Fig. 2. An MQ
-
6 gas sensor is used in the gas
sensor module. As per its datasheet, it has high sensitivity to propane, butane, isobutene,

LPG and natural gas
. The sensor can also be used to detect combustible gases, especially
methane. This circuit has been tested with LPG gas and was found to work very fine.



Whenever there is LPG con
-
centration of 1000 ppm (parts per million) in th
e
area, the OUT pin of the sensor module goes high. This signal drives timer IC 555, which is
wired as an astable multivibrator. The multivibrator basically works as a tone generator. Output
pin 3 of IC 555 is connected to LED1 and speaker
-
driver transisto
r SL100 through current
-
limiting resis
-
tors R5 and R4, respectively. LED1 glows and the alarm sounds to alert the user of
gas leakage. The pitch of the tone can be changed by varying preset VR1. Use a suitable heat
-
sink for transistor SL100.









































































ALL THE BEST ... Do Well !!!!

Posted by creativeworld9 at
6:26 AM


Labels,
B.TECH MINI PROJECTS
,
Gas leakage alarm with gsm modem
,
Gas leakage alarm
pdf
,
Gas leakage alarm project report
,
gas leakage alarm system using microcontroller


5 comments:


Milan said...

Congrats bhai...

Really u did such a good thing.

June 8, 2012 2:08 AM


Rajesh said...

its very nice bhayya...

July 2, 2012 2:22 AM


anusha gollaprolu said...

It is very usefull in industries,companes&etc

August 2, 2012 11:45 PM


Agnel

said...

Can you please post the .
sch and .brd files for the circuit diagram?

Please................

September 16, 2012 2:44 A
M


Akash Zad

said...

did u check this with cigarette lighters working on butane

September 21, 2012 9:00 PM

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