1. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    I need circuit ecg with IA ad620 ( in proteus or altium or pspice) and

    circuit generateing heart (ecg) signal

    anyone have this circuit?

    thanks
     
  2. SPQR

    Member

    Nov 4, 2011
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    48
    THIS and THAT will give you a start.
     
  3. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    I have anoder reference
     
  4. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
    22
    0
    please help me.......
     
  5. t06afre

    AAC Fanatic!

    May 11, 2009
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    In order to get help. You have to tell us what you have done so far. Why and how you struggle. As a tip have you searched for ECG related stuff on the site at Analog Devices or Texas Instruments. You will find a lot tips that way. And of course Google is your friend also.
     
  6. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    thanks. but I can not good understand engilsh.
    [​IMG]
     
  7. BillB3857

    Senior Member

    Feb 28, 2009
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    For starters, the transistor part of the TCRT5000 needs to be turned around. Emitter to ground, collector to resistor to +5.
     
  8. t06afre

    AAC Fanatic!

    May 11, 2009
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    Sorry but not being good in English is not an excuse then it come to engineering I am afraid. Also I am not sure what your circuit is meant to do. It has very little to do with ECG measurement. And about everything is wrong about it
    Did you do a google search or have your regime blocked Google in fear of western cultural imperialism. If you have problem with using Google I can post some info for you here about ECG. That is no problem at all. Remember without knowing why and how you struggle we can not help you.
     
    cheshmayebaruni likes this.
  9. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    i have Debugging this circuit

    please your commend about this now circuit:

    Thanks Beforehand !
    [​IMG]

    am sorry، some Prices is Persian
     
  10. t06afre

    AAC Fanatic!

    May 11, 2009
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    Sorry but this is still no ECG circuit. But things will fall more into place if this is some kind of Pulse oximetry setup. http://en.wikipedia.org/wiki/Pulse_oximetry ( I do not hope your regime have blocked wiki also) Also why are you using the AD620 that way in your circuit. The AD620 is an instrumentation amplifier. And yes it would be useful to use the AD620 in a setup like this
    [​IMG]

    But in your setup it make no point at all used that way. Replace it with a standard opamp To sum it up to many loose end here. Please find out what you rally want to do. Do you want to measure ECG or do you want to use the Pulse oximetry measurement setup
     
  11. Audioguru

    New Member

    Dec 20, 2007
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    His circuit that has too many opamps will only measure the heart rate per minute or make a click for each hearbeat. I is not an ECG circuit that will show a trace of the heart.
     
  12. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    Pulse oximetry is Expensive.

    Regardless of ecg and i have fulfill circuit "Heart rate measurement from fingertip" with tcrt5000.

    thanks for help you
     
  13. BillB3857

    Senior Member

    Feb 28, 2009
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    It all depends upon your definition of "expensive."
    http://www.walgreens.com/store/c/naturespirit-fingertip-pulse-oximeter/ID=prod6099862-product?ext=gooPersonal_Care_PLA_Oximeters_prod6099862_pla&adtype={adtype}&kpid=prod6099862&sst=23321b5e-ee11-66c8-1b1b-00001730c70f
     
  14. SPQR

    Member

    Nov 4, 2011
    379
    48
    Now we're getting some information.

    ECG = the measurement of the electrical signal from the heart with a series of "-" and "+" leads. You need two wires connected to different parts of the body. You would need two finger tips - one from each hand.

    Pulse oxymetry = a method that uses light to look at the saturation of blood through the skin. You only need one finger.


    So if your sentence above is correct "heart rate measurement from fingertip" then you do not necessarily need the ecg, only the "pulse" or the "heart rate" - is this correct?
     
  15. t06afre

    AAC Fanatic!

    May 11, 2009
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    For your information. You will by no doubt be using the Pulse oximetry method. It is also named SpO2. SpO2 is an abbreviation for peripheral oxygen saturation. It will vary through each heart cycle. And hence it can be used to measure heart rate. Se picture for example. The upper trace is the ECG and the lower is SpO2
     
  16. Audioguru

    New Member

    Dec 20, 2007
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    In Google you can look at the HEMON project. HEartMONitor.
    It shines an LED through your finger and detects when blood flow reduces the amount of light that is passed. It doesn't use an instrumentation amplifier IC, it uses only 2 ordinary opamps.
     
  17. cheshmayebaruni

    Thread Starter New Member

    Dec 28, 2012
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    me point of Signal amplification Heart only Strengthen its with AD620 and not Difference than useing at acg or sensor tcrt5000. me selecting useing at sensor tcrt5000 Because that is Easier.
    the Yestreen Up circuit Was tested and Get answers.

    thank for all
     
  18. t06afre

    AAC Fanatic!

    May 11, 2009
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    As shown in your last schematic. The use of AD620 that way kind of waste. It just give extra cost. If I was your teacher I would have pointed this out. And not given you full score. But well it will work using it this way. At least as long as the input is within the AD620 input parameter specification
     
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