Method and device for transmitting data between one process cell and multiple position measuring devices

Method and device for transmitting data between one process cell and multiple position measuring devices

  • CN 1,497,910 B
  • Filed: 09/30/2003
  • Issued: 07/11/2012
  • Est. Priority Date: 10/01/2002
  • Status: Active Grant
First Claim
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1. be used for interconnective a plurality of position-measurement devices (20,30,40 in a processing unit (10,110) and linear bus topology;

  • 120,130,140) method of transmission data between, wherein, for handling position-measurement device (20,30,40 simultaneously;

    120,130,140) position data in-require signal (RQ) is respectively each position-measurement device (20,30,40;

    120,130,140) (dD1, dD2 dD3), make from position data-require signal (RQ) at processing unit (10 to consider a specific delay correction value that depends on the transit time;

         110) side occurs, and handles all position-measurement devices (20,30,40 up to simultaneously;

    120,130,140) position data in-require signal (RQ) to produce identical separately time of delay (TL),Wherein said time of delay (TL) is except comprising the delay correction value (dD1 that depends on the transit time;

    DD2;

    DD3) outside, also be included in the process of transmission data word (DATA2) with respect to position data-the require time location information (dTJ) of the relative time position of signal (RQ)Wherein, according to processing unit (10;

         110) with relevant position-measurement device (20,30,40;

    120,130,140) signal transit time between, (dTK1, dTK2 dTK3) were relevant position-measurement device (20,30,40;

    120,130,140) select the specific delays corrected value (dD1, dD2, dD3),Wherein, obtain each position-measurement device (20,30,40 before the operation of the measurement in initial period;

    Specific delays corrected value 120,130,140) (dD1, dD2, dD3),Wherein, (dD1, dD2 dD3) are stored in and distribute to position-measurement device (20,30,40 separately with the delay correction value that draws separately;

    120,130,140) memory (25,35,45;

    125,135,145) in.

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