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Data acquisition system

  • US 5,062,101 A
  • Filed: 07/21/1989
  • Issued: 10/29/1991
  • Est. Priority Date: 07/21/1989
  • Status: Expired due to Term
First Claim
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1. A data acquisition system for use in a facility management system for receiving analog input information, converting said analog input information to multiple-bit digital data, and providing said digital data in a bit-parallel format for direct access storage in memory, said data acquisition system comprising:

  • an input for receiving said analog input information;

    analog to digital conversion means for converting said analog input information to a multiple-bit digital word, the bits of said digital word being in bit-parallel format;

    parallel to serial bit means for converting said parallel bits to serial bits;

    serial to parallel bit means for receiving and latching said serial bits as re-parallelled bits, said serial to parallel bit means including a clock input, and a transfer enable clock for providing a transfer enable clock signal for each said serial bit to be transferred; and

    optical coupler means connecting said parallel to serial bit means to said serial to parallel bit means, including a first input for receiving said serial bits of digital data, for transferring said serial bits provided by said parallel to serial bit means to said serial to parallel bit means and including a second input for receiving said transfer enable clock signal and transferring said transfer enable clock signal to said serial to parallel bit means clock input to provide immunity to electrical noise during said transfer.

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