Patents by Inventor Juergen WUELLRICH

Juergen WUELLRICH 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 operating a safety control device
    Patent number: 9405278
    Abstract: A safety control device for safely controlling a hazardous installation has a first and a second calculation unit and an output unit for driving at least one actuator. The control device acquires an input signal and determines a floating point value depending on the input signal. The first and second calculation units each determine an input interval as a function of the floating point value. The first and second calculation units each further determine a result interval as a function of the input interval by applying a first calculation algorithm to the input interval. The first calculation algorithm is based on interval arithmetic. The result intervals from the first and second calculation units are compared and an output value is determined as a function of the result intervals. An output signal is determined as a function of the output value. The output signal drives the at least one actuator.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: August 2, 2016
    Assignee: PILZ GMBH & CO. KG
    Inventors: Simon Stegmaier, Timo Nawratil, Juergen Wuellrich
  • METHOD FOR OPERATING A SAFETY CONTROL DEVICE
    Publication number: 20140200687
    Abstract: A safety control device for safely controlling a hazardous installation has a first and a second calculation unit and an output unit for driving at least one actuator. The control device acquires an input signal and determines a floating point value depending on the input signal. The first and second calculation units each determine an input interval as a function of the floating point value. The first and second calculation units each further determine a result interval as a function of the input interval by applying a first calculation algorithm to the input interval. The first calculation algorithm is based on interval arithmetic. The result intervals from the first and second calculation units are compared and an output value is determined as a function of the result intervals. An output signal is determined as a function of the output value. The output signal drives the at least one actuator.
    Type: Application
    Filed: November 20, 2013
    Publication date: July 17, 2014
    Inventors: Simon STEGMAIER, Timo NAWRATIL, Juergen WUELLRICH