Can I used to detect the small crack on egg using HCSR04 Ultrasound sensor?

Discussion in 'Embedded Systems and Microcontrollers' started by Zul Fadli, Oct 14, 2016.

  1. Zul Fadli

    Thread Starter New Member

    Oct 14, 2016
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    0
    Hello everybody,
    Excuse me, i want to asking.
    can I used to detect the small crack on egg using HCSR04 Ultrasound sensor?
    thanks


    Mods note:
    Please don't hijack other member's thread, now you have your own.
    This thread was split from -- Arduino HCSR04 Crack Measuring.
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,777
    1,103
    No. The ultrasonic frequency is too low and the transducer is the wrong type.
     
  3. RichardO

    Well-Known Member

    May 4, 2013
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    To detect a crack this small you need a transducer operated at several Mega Hertz. This is possible -- Diaganostic ultrasound companies do this all the time.

    For experimentation, using PVDF (Kynar) film transducers might work. I seem to remember reading long ago that they were used at a frequency of 500 MHz. :eek:
     
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Are the eggs for eating? Are they chicken or duck? Have they been candled? How many and how often do you need to do the check? There are sensitive, non-automated ways.

    John
     
  5. RichardO

    Well-Known Member

    May 4, 2013
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    I should have mentioned... Vibration at these high frequencies do not go through air. Even in water, the ultrasound is attenuated at the rate of about 1dB/cm/MHz.
     
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