Patents by Inventor Kai Höfig

Kai Höfig 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).

  • Publication number: 20170023935
    Abstract: A method is provided for starting up a function implemented in distributed manner on a number of computation devices in a control system having at least two computation devices coupled via a data communication connection. Output parameters are provided for a number of output variables of the respective computation device, wherein the output variables form function variables for the function. For each input variable of one of the computation devices that has an associated output variable from one of the further computation devices, the output parameters of the output variables are checked for correspondence with prescribed input parameters of the respective input variables. The function is started-up if the output parameters of the output variables correspond to the prescribed input parameters of the respective input variables.
    Type: Application
    Filed: February 25, 2015
    Publication date: January 26, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Michael Armbruster, Kai Hoefig
  • Patent number: 9483342
    Abstract: A method for supporting failure mode and effects analysis includes storing a meta-model in a computer-readable storage medium. The meta-model includes generic parts of technical systems, generic failure modes, and associations between the generic parts and the generic failure modes. The associations indicate, for each generic part, one or more generic failure modes associated with the generic part. Each generic failure mode identifies a type of failure for a respective generic part. A processor instantiates the generic parts and the generic failure modes to generate part instances and failure mode instances specifying a technical system. The part instances and the failure mode instances are stored, such as in the computer-readable storage medium.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: November 1, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Kai Höfig
  • Publication number: 20160266952
    Abstract: A method for automated qualification of a safety critical system including a plurality of components is provided. A functional safety behavior of each component is represented by an associated component fault tree element. The method includes automatically performing a failure port mapping of output failure modes to input failure modes of component fault tree elements based on a predetermined generic fault type data model stored in a database.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventors: Kai Höfig, MarC Zeller
  • Publication number: 20160246661
    Abstract: An apparatus and method for analyzing availability of a system including subsystems each having at least one failure mode with a corresponding failure effect on the system are provided. The apparatus includes a degraded mode tree generation unit configured to automatically generate a degraded mode tree. The degraded mode tree includes at least one degraded mode element representing a degraded system state of the system that deviates from a normal operation state of the system based on a predetermined generic system meta model stored in a database including Failure Mode and Effects Analysis elements representing subsystems, failure modes, failure effects, and diagnostic measures. The apparatus also includes a processor configured to evaluate the generated degraded mode tree for calculation of the availability of the system.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventor: Kai Höfig
  • Publication number: 20160248775
    Abstract: A safety apparatus for providing a safe operation of a subsystem within a safety critical system, SCS is disclosed herein. The safety apparatus includes: a system communication interface for communication with components of the subsystem and other subsystems of the safety critical system; a backend communication interface for communication with a safety cloud backend; an integrated identifier memory storing a unique identifier of the subsystem; and an authorization control unit configured to perform a handshake authorization procedure with another target subsystem of the safety critical system via the system communication interface, and with the safety cloud backend via the backend communication interface to get authorization for the subsystem to execute a safety critical function on the target subsystem of the safety critical system based on the unique identifiers of both subsystems.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventor: Kai Höfig
  • Publication number: 20160170868
    Abstract: A method for automated generation of at least one test pattern adapted to test a subsystem of a safety critical system comprising the steps of providing a failure propagation model of the safety critical system, selecting components of the subsystem under test as a test scope, and evaluating the test scope failure propagation model of the selected components to extract the test pattern.
    Type: Application
    Filed: January 14, 2015
    Publication date: June 16, 2016
    Inventors: Kai HOEFIG, Marc ZELLER
  • Publication number: 20160171506
    Abstract: A method for automated recertification of a safety critical system with at least one altered functionality is provided. The method includes providing a failure propagation model of the safety critical system. The method also includes updating the failure propagation model of the safety critical system according to the at least one altered functionality using inner port dependency traces between inports and outports of a failure propagation model element representing the at least one altered functionality. The method includes calculating top events of the updated failure propagation model, and comparing the calculated top events with predetermined system requirements to recertify the safety critical system.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 16, 2016
    Inventor: Kai Höfig
  • Publication number: 20150378802
    Abstract: The embodiments relate to methods and systems for supporting a global effect analysis of a technical system. The embodiments include providing a meta-model stored in a computer readable storage medium, where the meta-model comprises at least one assembly of the technical system comprising parts having an associated set of failure mode elements, and where each failure mode element has an associated local effect element. The embodiments also include clustering local effect elements within global effect elements to generate a global effect tree stored within the meta-model.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 31, 2015
    Inventor: Kai Höfig
  • Publication number: 20150269013
    Abstract: A method for supporting failure mode and effects analysis includes storing a meta-model in a computer-readable storage medium. The meta-model includes generic parts of technical systems, generic failure modes, and associations between the generic parts and the generic failure modes. The associations indicate, for each generic part, one or more generic failure modes associated with the generic part. Each generic failure mode identifies a type of failure for a respective generic part. A processor instantiates the generic parts and the generic failure modes to generate part instances and failure mode instances specifying a technical system. The part instances and the failure mode instances are stored, such as in the computer-readable storage medium.
    Type: Application
    Filed: April 18, 2014
    Publication date: September 24, 2015
    Inventor: Kai Höfig
  • Publication number: 20150088476
    Abstract: A method for integrated model-based safety analysis includes integrating a safety analysis model into a system development model of a safety-critical system. The system development model includes model components. The safety analysis model models a failure logic separately for each of the model components. The method includes representing dependencies among the model components with a design structure matrix. The design structure matrix represents each of the model components with a row and a column and shows dependencies between model components with corresponding entries. The method also includes sequencing the design structure matrix, and identifying at least one dependency loop and loop components in the sequenced design structure matrix. The loop components are part of the at least one dependency loop.
    Type: Application
    Filed: October 29, 2013
    Publication date: March 26, 2015
    Inventors: Zhensheng Guo, Kai Höfig