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Cesium atomic clock

Discussion in 'Microcontrollers, Programming and IoT' started by LeThalois, Jan 14, 2013.

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  1. LeThalois

    LeThalois

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    May 31, 2012
    Hello,

    I am a junior researcher in electronics (novice, beginner , :( ). I intend to assure training for an engineer during his Final Project Study which lasts 3 months. The subject on which we plan to work is "atomic clock".

    Can you suggest a topic in which we can use technology of embedded systems (especially STM32, FPGA, DSP) of course with keeping link with the main subject "atomic clock".

    Thank you, in advance for your help which will be, without a doubt, valuable to me.
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,793
    2,435
    Nov 17, 2011
    I think it's ou of your scope to build the complete atomic clock.
    You can, however, build or buy a receiver to receive a standard time signal (e.g. DCF77, IRIG-B etc.). You can then use the embedded system to decode and display the time and date and possibly add extra functions like e.g. an alarm clock.
     
  3. LeThalois

    LeThalois

    4
    0
    May 31, 2012
    thinks a lot dear freind
     
  4. shrtrnd

    shrtrnd

    3,781
    499
    Jan 15, 2010
    You might check the NIST website, (used to be National Bureau of Standards here in
    the States). They're responsible for Standards for measurement accuracy.
    We're tied into their 'atomic clock' (we use cesium and rubidium clocks here),
    NIST is the standard by which all electronic measurements, and specifically for you
    TIME measurements, are calibrated here.
    Just a place to check for information you might be able to use.
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,448
    2,809
    Jan 21, 2010
    You can purchase rubidium oscillators on ebay for a reasonable price.

    These will give you a very accurate 10MHz (typically) and you can use that to derive lower frequencies very easily.

    Some construction is required (not too hard) to create a power supply and monitor the output which tells you the oscillator is locked.
     
  6. davenn

    davenn Moderator

    13,717
    1,911
    Sep 5, 2009
    indeed you can and I have done so for my amateur radio work for locking PLL's etc

    cheers
    Dave
     
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