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Choosing microprocessor for alarm system

Discussion in 'Electronic Design' started by Myauk, Jul 6, 2007.

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  1. Myauk

    Myauk Guest

    Hello
    I am working on an assignment for microprocessor based alarm system.
    To simplify my work, I decided to write about single zone gas and
    smoke detection, and a decision making system which will activate the
    buzzer when a heat interrupt is triggered with the presence of excess
    gas and smoke content in the region of interest (a small room or a
    kitchen).
    In the previous discussion,
    Can anybody please discuss about choosing a microprocessor for the
    application?
    Sorry for my ignorance but it is a completely new subject for me since
    my job currently is with the video and multimedia applications and my
    close friend is asking for help from me to write for him on his
    assignment about this microprocessor based alarm system.
    Regards
     
  2. JeffM

    JeffM Guest

  3. John B

    John B Guest

    On 06/07/2007 Myauk wrote:

    ..
    ..
    ..
    Well then that's very much a case of the blind leading the blind isn't
    it. Your friend will learn nothing if you do his assignment for him.
     
  4. Use a PIC, of course.


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    Don Lancaster voice phone: (928)428-4073
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  5. Not really.

    You can either use a PIC.

    Or spend lots of time evaluating all of the alternatives.

    And then using a PIC.

    Either way, the outcome is the same.



    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
  6. I am working on an assignment for microprocessor based alarm system.
    Allmost any modern 8-bit microcontroller will do. PIC is fine.. I'd
    use Atmel's AVR-series.

    However, they are microcontrollers. If you want to do it on microprocessor,
    the old and simple 8051 and Z80 are are still available in some form.. It's
    the harder way, I wouldn't recommend it unless you really want to build a
    microprocessor device as a learning experiment.

    If you want to do it the fast and simple way, use modern microcontroller.
     
  7. Nico Coesel

    Nico Coesel Guest

    Like an ARM or an MSP430. The MSP430 is extreme low power which makes
    perfect sense in a -sometimes- battery powered application.
     
  8. How many times do people have to tell, it doesn't matter for this
    trivial application.
    Your friend is going to FAIL, advise him to switch to an arts course
    instead.

    Dave.
     
  9. krw

    krw Guest

    What is your definition of "microprocessor" and "microcontroller"?
    Why doesn't the 8051 fall under "microcontroller"?
    Like the 8015?? ;-))
     
  10. Myauk

    Myauk Guest

    :)
     
  11. Myauk

    Myauk Guest

    Ignorance can be forgiven. Pig-headedness can't.http://groups.google.com/group/sci.electronics.design/browse_frm/thre...
    My apology for my Pig-headedness then.
    I have read your post about writing specification and found many
    precious guide lines about electrical design and development.
    Thank you so much for that. And thank you so much for highlighting my
    weakness.
    I have removed my post.
    Regards
     
  12. Eeyore

    Eeyore Guest

    The 8051 too is a microcontroller not a microprocessor. It is very healthy and
    still widely available, especially from Philips and Atmel who makes many
    versions with extra on-board devices compared to the original. And stripped down
    low pin-count versions are available too. Flash memory now seems to have
    replaced Eprom as the internal code memory of choice, making them even easier to
    use.

    Graham
     
  13. Eeyore

    Eeyore Guest

    You meant 8051 !

    Graham
     
  14. However, they are microcontrollers. If you want to do it on microprocessor,
    Oops, my bad. Surely 8051 is a microcontroller. I should pay more attention to what
    I write. :)

    And with the Z80 I meant the original Zilog Z80 microprocessor (and it's
    clones). Not the new microcontrollers with improved Z80-core, like Zilog Z8 Encore.

    My definition of microprocessor and microcontroller? Microprocessor is the
    core device. No RAM, advanced io and stuff. It allways needs
    external circuits to function.
    Microcontroller is one which has them all and much more. Integrated, ready
    to use without external circuitry. Well, of course it needs a power supply
    and such. ;)
     
  15. Don McKenzie

    Don McKenzie Guest

    for micro discussion have a look at:
    Micros for Beginners:
    http://www.dontronics-shop.com/pages.php?pageid=23

    Then I would suggest a simple AVR hardware design, and the free demo
    version of Bascom-Avr.
    http://www.dontronics-shop.com/product.php?productid=16138

    you will find a simple schematic at:
    http://www.dontronics-shop.com/product.php?productid=16328
    and:
    http://www.dontronics.com/dt006.html.

    You can roll your own for very little.

    Don...




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    Don McKenzie

    Site Map: http://www.dontronics.com/sitemap
    E-Mail Contact Page: http://www.dontronics.com/email
    No More Damn Spam: http://www.wizard-of-oz.com

    Serial OLED uses standard micro-SD memory cards.
    http://www.dontronics-shop.com/product.php?productid=16659

    USB Flash Drive interface for existing products.
    http://www.dontronics-shop.com/product.php?productid=16654
     
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