Patents by Inventor Heiko Groenewold

Heiko Groenewold has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for detecting faults on safety oriented sensors
    Patent number: 6486674
    Abstract: A method for fault detection in the operation of sensors with at least two decoupled signal-transmitting elements with contacts and with a closed conductor loop includes delaying, a first test output by a defined switching delay with reespect to a second test output and evaluating the input channels in accordance with a defined expectation. Faults being inferred from deviations between actual and expected signal variations and time intervals.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: November 26, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heiko Groenewold, Ronald Hauf
  • Method for detecting faults on safety oriented sensors
    Publication number: 20010024125
    Abstract: A method for fault detection in the operation of sensors with at least two decoupled signal-transmitting elements with contacts and with a closed conductor loop includes delaying, a first test output by a defined switching delay with reespect to a second test output and evaluating the input channels in accordance with a defined expectation. Faults being inferred from deviations between actual and expected signal variations and time intervals.
    Type: Application
    Filed: January 29, 2001
    Publication date: September 27, 2001
    Applicant: Siemens AG
    Inventors: Heiko Groenewold, Ronald Hauf