multiple sensors data acquisition

Discussion in 'General Electronics Chat' started by abad109, Apr 21, 2011.

  1. abad109

    Thread Starter New Member

    Mar 14, 2011
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    My project involves acquiring voltage from several sensors using a 16 channel data acquisition card.
    There are 80 sensors, say S1 to S80.
    To implement this, i was thinking of using an IC such that Ch1 to Ch16 will be connected to S1 to S16 initially.
    Then after some time, Ch1 to Ch16 will connect to S17 to S32 and so on.
    A control signal, should cause this switchover to occur at regular intervals of time.
    I think mux/demux do such stuff.

    Any suggestions to implement this will be gratefully appreciated.

    Regards
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    What kind of signals need to be aquired?
    Are these analog or digital?
    If analog what precission do you need?

    Bertus
     
  3. abad109

    Thread Starter New Member

    Mar 14, 2011
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    0
    these are analog voltage signals between 1 to 10 V.
     
  4. bertus

    Administrator

    Apr 5, 2008
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    abad109 likes this.
  5. designnut

    Member

    Apr 21, 2011
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    There are so many IC solutions to the problem, multiplexers and A/D circuits available. I think you are hampered by sticking to one particular part. Most everything one needs is in IC form. Find it with google.
     
  6. abad109

    Thread Starter New Member

    Mar 14, 2011
    12
    0
    I found multiplexers as one approach.
    If anybody has any more ideas, i would be grateful.

    Regards
     
  7. beenthere

    Retired Moderator

    Apr 20, 2004
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    You can use relays, too. When choosing analog switches, read the data sheets to see if they can switch up to 10 volts.

    Whatever the approach, selecting 80 inputs (perhaps the ground reference for each as well?) is going to be a bit bulky.
     
    abad109 likes this.
  8. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    I would investigate using a microcontroller with sensors on a serial bus; such an approach would greatly simplify wiring for 80 devices.
     
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