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Distributed input/output control systems and methods

  • US 8,942,831 B2
  • Filed: 08/09/2010
  • Issued: 01/27/2015
  • Est. Priority Date: 10/05/2000
  • Status: Expired due to Fees
First Claim
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1. A distributed redundant control system utilizing inputs and outputs for controlling at least one piece of equipment, the system comprising:

  • a main controller module for controlling the at least one piece of equipment, the main controller module being configured to communicate a first signal to a plurality of input/output (I/O) modules over a first communication path and being configured to communicate a second signal to the plurality of I/O modules over a second communication path, wherein the first and second signals are redundant signals; and

    each I/O module of the plurality of I/O modules comprising first and second slave controllers and first and second input/output (I/O) drivers, the first slave controller configured to input and output the first signal over the first communication path and input and output a first set of additional signals over a first additional communication path, the second slave controller configured to input and output the second signal over the second communication path and input and output a second set of additional signals over a second additional communication path, the first additional communication path being coupled to the first I/O driver and the second additional communication path being coupled to the second I/O driver;

    wherein each of the first and second slave controllers of each of the plurality of I/O modules is configured to control a switch or relay of a corresponding I/O driver to turn an output of the corresponding I/O driver on or off.

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