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Reconfiguring redundancy management

  • US 4,327,437 A
  • Filed: 07/30/1980
  • Issued: 04/27/1982
  • Est. Priority Date: 07/30/1980
  • Status: Expired due to Term
First Claim
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1. An apparatus for selecting a primary control signal for redundancy management in a system having a plurality of sensors providing input signals in parallel to a control computer to provide the computer with a primary control signal representing an output from a properly operating sensor, comprising:

  • (a) selector means for receiving and comparing input signals in groups of three from the sensors and detecting the median value signal of the three input signals;

    (b) comparator means for comparing the detected median value signals to detemine if any one of the detected median value signals exceeds the others by an amount greater than the signal level for a failed sensor;

    (c) said comparator means further including means for transmitting to the control computer as the primary control signal a detector median value signal which exceeds the others by an amount greater than the signal level for a failed sensor and means for transmitting to the control computer as the primary control signal the least of the detected median value signals when no detected median value so exceeds the others.

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