Encoder

Discussion in 'Homework Help' started by av.k10373, Nov 21, 2007.

  1. av.k10373

    Thread Starter New Member

    Nov 21, 2007
    2
    0
    Dear Sir,


    Attached here some details of a 9 bits parellel output encoder.
    Can we make a test circut with digital counter display unit in decimal
    and binery mode ?

    Spec: 9 bits output, 0 to 360* counting, 3000 rpm,

    Thanks
    Ajith karthikeyan
    ajithkarthikeyan@yahoo.co.in
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Well, the output is already in binary, so that part is already done. Converting to degrees might be a challenge, as there are more than 360 counts/revolution. Unless, of course, you know more about the encoder that we do.

    You could go through a lot of discreet logic to convert to decimal. Must the count in decimal be in degrees, or just be the equivalent number?

    The first solution is going to need a microprocessor. The second can use several gates to monitor bit 1 & 2, and count up a decimal counter string.
     
  3. GS3

    Senior Member

    Sep 21, 2007
    408
    35
    One possible approach might be to convert digital to analog and then just measure the analog signal with a meter which will have its own built in ADC. That seems pretty simple.
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    It's going around Robin Hood's barn, but the D to A converter's output could be scaled to more closely work with the A to D to give an output that reads in degrees.
     
  5. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    656
    How do we know the output is in binary?
     
  6. mrmeval

    Distinguished Member

    Jun 30, 2006
    833
    2
  7. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    The OP has that information.
     
  8. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    656
    What information? (This is beginning to feel like "Who's on first?" by Abbott and Costello.):D
     
  9. GS3

    Senior Member

    Sep 21, 2007
    408
    35
    If the output is in Gray code rather than straight binary then my suggestion does not work (obviously). I had not thought of that.
     
  10. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Nobody but the OP has any information about the encoder, other than it's got a nine bit output.
     
Loading...