uC for medical device

Discussion in 'Embedded Systems and Microcontrollers' started by andrew24, Feb 6, 2010.

  1. andrew24

    Thread Starter Active Member

    Aug 20, 2008
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    Hello. I'm designing a medical device with 10 sensors(in-amps).Signals from them needs to be fed to ADC (12-20 bit).
    Sample rate 1024. They need to be filtered real-time with some high order digital filters(60Hz notch, 150Hz low pass, 0.05Hz high pass).Then sent to a PC.
    would msp430 (MSP430FG437 exactly) be suficcient for this task, or i need some ARM based uC or even DSP?
     
    Last edited: Feb 6, 2010
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    What kind of AD do you plan to use in your project?
     
  3. retched

    AAC Fanatic!

    Dec 5, 2009
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    It still hinges on a few things, but if you want real time processing of 10 sources, I would use a DSP. If the computer is doing the processing, You could use quite a variety of chips.
    If you are taking 1024 samples a sec on from 10 sensors and averaging them and sending the result to the PC say once a second, Many many chips could handle this (10bit or greater)
     
  4. ftsolutions

    Active Member

    Nov 21, 2009
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    You need to have an idea of what your signal/noise ratio needs to be, dynamic range and allowable error to help choose appropriate parts - how many bits of resolution do you need in the A/D? Are any signals bipolar in sign (and thus you need to scale&convert them to unipolar range if you're planning to feed them into a typical microcontroller's ADC inputs)? DSP chips usually have more efficient A/D support hardware than more general purpose microcontrollers, such as ARM, PIC, etc. but sometimes the development toolsets are much more expensive.
     
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