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Method and apparatus for detection, transmission and processing of safety-related signals

  • US 6,711,713 B1
  • Filed: 05/03/2000
  • Issued: 03/23/2004
  • Est. Priority Date: 05/03/1999
  • Status: Expired due to Term
First Claim
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1. A method for detection, transmission and processing of safety-related signals using at least one detection unit, a transmission path and a signal processor, comprising:

  • detecting safety-relevant signals on at least two physical channels at a transmitter end, the safety-relevant signals including signal data, the safety-relevant signal including redundant signals;

    transmitting the detected signal data by radio on at least two logical channels to a receiver end using a safety technique;

    processing and monitoring the received signal data on at least two physical channels at the receiver end;

    producing the redundant signals using at least duplicated electromechanical or electronic input elements; and

    producing additional protection data by each detection unit from the signal data for monitoring purposes, the protection data allowing monitoring for at least one of;

    i) incorrect transmitters or incorrect receivers, ii) adulteration of the safety-relevant data, iii) loss of data, and iv) repetition of data.

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