Patents by Inventor Steven D. Bonwell

Steven D. Bonwell 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).

  • Wiring fault detection, diagnosis and reporting for process control systems
    Patent number: 6912671
    Abstract: A wiring fault detection, diagnostic and reporting technique enables linking devices within a process control system to measure the electrical characteristics of a segment protocol bus and the electrical characteristics of the signals transmitted via the protocol bus. The technique connects a signal line of a segment protocol bus to one of a plurality of measurement blocks within a wiring fault detection unit. The one of the plurality of measurement blocks measures an electrical characteristic associated with the segment protocol bus and sends the measured electrical characteristic to a wiring fault diagnostic manager. The wiring fault diagnostic manager analyzes the measured electrical characteristic to determine a type of the wiring fault and reports the type of the wiring fault via a user interface.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: June 28, 2005
    Assignee: Bisher-Rosemount Systems, Inc
    Inventors: Daniel D Christensen, Steven D. Bonwell, Michael L. Marshall
  • Wiring fault detection, diagnosis and reporting for process control systems
    Publication number: 20020194547
    Abstract: A wiring fault detection, diagnostic and reporting technique enables linking devices within a process control system to measure the electrical characteristics of a segment protocol bus and the electrical characteristics of the signals transmitted via the protocol bus. The technique connects a signal line of a segment protocol bus to one of a plurality of measurement blocks within a wiring fault detection unit. The one of the plurality of measurement blocks measures an electrical characteristic associated with the segment protocol bus and sends the measured electrical characteristic to a wiring fault diagnostic manager. The wiring fault diagnostic manager analyzes the measured electrical characteristic to determine a type of the wiring fault and reports the type of the wiring fault via a user interface.
    Type: Application
    Filed: May 7, 2001
    Publication date: December 19, 2002
    Inventors: Daniel D. Christensen, Steven D. Bonwell, Michael L. Marshall