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Gas Leakage Alarm
 

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     GAS LEAkAGE ALARM    

      SANI THEO


    LPG gas is supplied in pressurised 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.

    Fig. 1 shows the circuit of the gas leakage alarm. The circuit operates off a 9V PP3 battery. Zener diode ZD1 is used to convert 9V into 5V DC to drive the gas sensor module.

    The SEN-1327 gas sensor module from RhydoLABZ is used in this circuit. Its output goes high when the gas level reaches or exceeds certain point. A preset in the module is used to set the threshold. Interfacing with the sensor module is done through a 4-pin SIP header. 

      

       Fig. 1: Circuit for gas leakage alarm
     

    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 satisfactorily.


        

    Fig. 2: Pin details of gas sensor module

    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.

    Output pin 3 of IC 555 is connected to LED1 and speaker-driver transistor SL100 through current-limiting resistors 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.


     

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    Post Comment | 97 Comments



    Sanjoli Goyal   941 days ago

    As sensor senses and give it as a input to ic and it produces pulse then how directly just by blowing led the speaker produces soundi mean current must be flowing through all loops continuously then why at that particular instant only its producing sound
    Reply   3 Replies
    Sasi   906 days ago

    Sir in mq6 sensor 6 hav pin-. Can i know which pin is output ang5v gnd- becoz of v project of this model- should kindly giv me soon rly-
    Reply  
    Asim Pokhrel   864 days ago

    I am the student of Kathmandu University here in Nepal. I am trying Gas leakage alarm as my first year project. I am confused that Gas sensing module available in this place or not? If you have any idea then please give your feedback
    Reply   3 Replies
    amarman   805 days ago

    it is availabe in Pokhara and cost NRs. 600.00
    Reply   1 Reply
    Ajay Gupta   723 days ago

    Can u let me know the supplier name?? i am based at birgunj and looking for such product.. pls let me know how can i procure the same?? take care
    Reply  
    Efy Admin   863 days ago

    The best way to find out is to consult your teachers and visit your local electronics components market. Try online stores that deliver in your area too.
    Reply   1 Reply
    Kishan Kothari   714 days ago

    hey can i use mq6 with breakout board instead of sen 1327 sensor module?
    Reply  
    imran   478 days ago

    goto rhydo labz u can find it and order it
    Reply  
    lakshmipraveen   697 days ago

    when tne GS senses the gas lekage it op goes high and thn IC and Astable multivibrator in the sense the transistor goes high when ip is high and makes LED and Alaram to blew up.thnQ
    Reply  
    deepak kumar bagwaiya   941 days ago

    hey its working yr...
    Reply   5 Replies
    AJEESH   914 days ago

    Have you used MQ5
    Reply  
    avatar   914 days ago

    hey much this cost totally..... plz reply me
    Reply   1 Reply
    tarun   892 days ago

    IT WILL COST RS 300 FOR WHOLE CIRCUIT
    Reply   2 Replies
    suresh   797 days ago

    please can you pleas share the actual senzor prize
    Reply  
    Kishan Kothari   714 days ago

    hey can i use mq6 gas sensor with breakout board instead of sen 1327 sensor module?
    Reply  
    keertheeswaran   775 days ago

    hi i need a clarification about the sensor becoz in ckt they gave four pin sensor but i am having six pin sensor how i should connect ?or whether four pin sensor is there ?send the details to email id........... please do it.....................
    Reply  
    vinny   889 days ago

    how much does this cost?
    Reply  
    amjad   456 days ago

    send me the PCB design Of Gas Leakage Detector Alaram
    Reply   1 Reply
    Efy Admin   444 days ago

    We started publishing PCB layout of the circuits under Circuit Ideas section from EFY January 2013 onwards (not before). So, PCB layout of the circuits published before January 2013 including this mentioned circuit are not available, sorry.
    Reply  
    yasin   938 days ago

    can we use mq5 gas sensor instead of mq6 sensor
    Reply  
    girivarma   931 days ago

    how much distance the sensoe accept the leakage
    Reply  
    sekar.t.n   924 days ago

    hey please send the cost of this GAS LEKAGE ALARAM
    Reply  
    tarun sharma   923 days ago

    Sanjoli goyal the 555 the output of the sensor is applied on the trigger pin of the 555ic not on its outputthe output pin only blows an soundalso it is imp. to consider that 555 is an ic not a micro-controller.........check clearly the circuit is copmlete n it will work also.......the current doesnt nedd to flow from al the loopsit just has to flow from the output derived connections.
    Reply  
    sanjay   919 days ago

    what will be total cost of cct
    Reply  
    vijay   919 days ago

    Some parts are not available at our place Hyderabad AP.Is it available in kit form If so what is cost of it. If assembled & tested units are available I would like to buy one. Inform me the cost and mode of payment.vijay
    Reply  
    manoj   918 days ago

    i will try in practicaly
    Reply  
    adesh   918 days ago

    gas leakage sensor are not availalable in markey
    Reply  
    BHARAT TRIVEDI   918 days ago

    I am not an electronic person and so i cannot assemble the gadget myself. We use PNG piped natural gas and we very badly need such safety device. Can a friend assemble such a device for us I am willing pay the cost in advance.Please intimate to brtrivedi1942@gmail.com Thanks.
    Reply  
    SHASHI   914 days ago

    IVE ASSEMBLED IT.. BUT AS SOON AS THE SWITCH IS CLOSEDTHE SPEAKER STARTS ALARMING - THEN WHAT MIGHT BE THE PROBLEM
    Reply  
    SH   914 days ago

    AS SOON AS THE SWITCH IS CLOSED THE SPEAKER STARTS ALARMING WHAT MIGHT BE THE PROBLEM
    Reply   1 Reply
    Ganesh   899 days ago

    in your case check voltage at the pin 4 of IC 555. It should be the 0v. and if it is not then cheek the output of sensor ICmodule.
    Reply  
    anumeha   909 days ago

    very nice.........................
    Reply  
    romaan   906 days ago

    where can i buy the all components
    Reply  
    arunkumar   903 days ago

    its really nice one...
    Reply  
    sabyasachi jena   901 days ago

    The use of lpg senser i.e. MQ-6 is not available in market. & I am not getting the device yet.
    Reply  
    SREERAG   900 days ago

    it alarming some time after the switch is closedwhat is the prblm?
    Reply  
    mandeep   899 days ago

    sir the ckt diagram of gas leakage detector and lpg gas gas leakage detector using gsm callig both r same?
    Reply  
    vishal   897 days ago

    MQ6 has six terminal but in ckt there is four connection shows.so how use it.plz reply
    Reply  
    tarun   892 days ago

    an mq6 sensor 6 hav pinthen what will be the connection for 4 pin
    Reply   1 Reply
    sourya   836 days ago

    frnds sensor MQ 6 always have 6 pins but we can cnvrt it according to our ckt and it is also availabel in market.
    Reply   1 Reply
    Ramakrishna   466 days ago

    please let me know the connections of MQ6 which as six pins and in diagram it is shown as 4 pins
    Reply  
    vishnu vs   876 days ago

    4 pin sip header is not available in my place.so ive provided the interface by soldering the sensor & taking leads out.but as soon as the switch is closed alarm sounds.whats the problem.pls kindly reply me very fast to rectify this problem.
    Reply  
    anand shukla   874 days ago

    sir is product ki cost kitani hai pleas
    Reply  
    deivapriya.m   870 days ago

    ya.its quite useful.but im looking to do agas leakage detection system with 89c51 microntroller. can u please help me?
    Reply   1 Reply
    rahul singh   857 days ago

    i already did this project for my final yr project using microcontroller.Apart frm detection u can aslo turn off the LPG gas regulator as well.for any query mail me rahulkr.ssit@gmail.com
    Reply   2 Replies
    Ramakrishna Chillara   854 days ago

    Hi Raghul Can you please share your project.ThanksRamakrishna
    Reply  
    promise   450 days ago

    Pls nid 2 see what u did using the microcontroller
    Reply  
    vishwanath   868 days ago

    i am not getting load adjustment of 1000ppm lpg and my sen1327 module is not sensing lpg what to do?
    Reply  
    saikiran   861 days ago

    plz send me the explanation key functions of ic555gassensor mq-6
    Reply  
    muhammad asim   853 days ago

    i want gas leakage alaram video that show how circuit of gas leakage alaram be patched and also its working?
    Reply   1 Reply
    aaryan aditya   829 days ago

    Hi friends This is the mini-project which I have done successfully in 3 days. 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.here is da site. where you can have all the details REAL OUT PUT VIDEO&IMAGESabstractblock diagramworkingmoduleswhere to buys ALL THE THINGS ARE SPECIFIED.httpwww.examsadda.com201205gas-leakage-alarm-mini-project-pdf.html
    Reply   3 Replies
    ajay   782 days ago

    muj ko SEN-1327 nahi mil raha hai.plz help me
    Reply  
    Sandeep   827 days ago

    Dear Friends SEN-1327 is not available in market can you know me that where it is available??
    Reply   1 Reply
    sujith   768 days ago

    plz help me i need SEN. reply me
    Reply  
    king   720 days ago

    thanks adi.
    Reply  
    avi   810 days ago

    i want to take the data from the sensor module in digital formatand display on the lcdso how can i do that
    Reply  
    sudheer   804 days ago

    hello friends i diddnt get SEN 1327 GAS SENSOR in my home town.is it available in hydrabad and please post area name
    Reply  
    P.K.Ghosh   777 days ago

    Please reply the Value in Rupees of the LPG gas sensor IC to me Mail pkgduki@gmail.comThanksfully.
    Reply  
    angel   769 days ago

    if this project need 8051...???how it sense leakage..?
    Reply  
    swathi   764 days ago

    please tell me some good mini projects of electronics
    Reply  
    dave   758 days ago

    i was wondering if anybody would happen to know if I were to substitute the actual 6-pin mq-6 sensor for the 4 pin sen-1327 gas module would it work the same using this schematic?
    Reply   1 Reply
    EFYLAB   755 days ago

    No, it will not work. It is designed for 4-pin gas module.
    Reply  
    mandala suresh   752 days ago

    where can i buy the all components
    Reply   1 Reply
    Efy Admin   751 days ago

    You may contact Rhydolabz, Bangaluru to get gas module, rest components are easily available in the market
    Reply  
    prakash shil   747 days ago

    how to connection the circuit of gas regulator.
    Reply  
    gvrao   743 days ago

    its superb and easy to understandthanks to total team
    Reply  
    Sanjana   739 days ago

    Will these parts be available in New Delhi NCR?
    Reply  
    HANUMAN PALIWAL   739 days ago

    sir plz send list of components used in this ckt.
    Reply  
    prabu   738 days ago

    how to connect the regulator and how much cost it...
    Reply   1 Reply
    Efy Admin   738 days ago

    You dont have to connect the circuit to gas regulator. After assembling the circuit on PCB, first switch on the circuit and test proper working. If its working well, place the circuit near the gas cylinder. The complete circuit costs around Rs 500.
    Reply   1 Reply
    rajesh pandey   395 days ago

    can you please send me full details & construction of this project
    Reply  
    bahubali egappagol   734 days ago

    hello sir will u send me this project as readymade ? otherwise plz give me ur contact details.
    Reply  
    KAMALA BADANAYAK   731 days ago

    can you tell me the total cost to make a project on this advanced gas detect and alert system.......plz
    Reply  
    sagar   724 days ago

    layout of LPG gas detection circuit
    Reply  
    Avant   721 days ago

    sir how it will cost???its WORkS???
    Reply  
    SABYASACHI JENA   717 days ago

    I hv used mq2 smoke senser in replace of mq6. Bt it not properly worked. It is continuously beeping. Plz gv me the suggestion about it.
    Reply  
    J.POOLSINGH   714 days ago

    good project sir
    Reply  
    zeeshan ali   709 days ago

    siri want to do mini project at my college campus so i required mq6 lpg gas detector circuit kit only.so please kindly send information and cost of mq6sen 1327price.thanks
    Reply  
    huma   705 days ago

    wat kind of heat sink iz required???
    Reply  
    raghuldeepak   684 days ago

    i had complete this project using this circuit but i cannt able to get output please help me with video
    Reply  
    ramyaa   681 days ago

    why do we use LED in this alarm???
    Reply   1 Reply
    RAMESH   611 days ago

    FOR CHECKING YOUR MEMORY POWER
    Reply  
    Surendra   668 days ago

    I have tried this project on lpgbu its not working eventhough when i blowed lpg gas on the sensor its not sensing anythingcan you please suggest me with answer
    Reply  
    nagasri   619 days ago

    sir the op of the sensor alwys goes high & the transistor is becoming on always.. diz is leadng 2 give the alarm continously how 2 ovrcme dizz prblm.. i had used mq-6 pin sensor
    Reply  
    harshad   600 days ago

    how many ruupes in this project?
    Reply  
    nil   585 days ago

    sir can i use a 9v supply using ic 7809 instead of the 9 v pp3 battery??? plzz reply sir
    Reply   1 Reply
    Efy Admin   481 days ago

    Yes, you can use 7809 regulator.
    Reply  
    shwetha   549 days ago

    sir can you please share how the sensor works and how it senses the leakage on what factor it is based. what is the actual output of the sensor. can we implement the same circuit without any modification????
    Reply  
    deepu   380 days ago

    is sensor sen 1327 avaliable in vijayawada AP
    Reply  
    sowmya   267 days ago

    cost of SEN-1327 GAS Sensor Module
    Reply  
    laxman   234 days ago

    hello sir will u send me this project as readymade ? otherwise plz give me ur contact details
    Reply   1 Reply
    Efy Admin   234 days ago

    No the complete kit of this project is not available with us right now.
    Reply  
    azizi   194 days ago

    hello sir did the ANG pin is not connected to anything?
    Reply  
    Rohit   193 days ago

    Hello sir we are soing this project in our final year of diploma.But we dont know how are we going to present it.Can you please help??I mean from where should we bring the gas to show them that it works..?
    Reply  
    veti   186 days ago

    very nice...................................................
    Reply  
    jayasree   8 days ago

    will I get the output? im confused with the pin confi. of MQ6 plzzz help me how 2 connect............
    Reply  

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