Patents by Inventor Christof Heilemann

Christof Heilemann 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).

  • Solenoid system with position and temperature detection
    Patent number: 11977119
    Abstract: A solenoid system and method can include: providing an energizing voltage to a coil of a solenoid; providing an AC signal superimposed onto the energizing voltage; detecting current through the coil including an AC current amplitude induced by the AC signal and including a DC offset current amplitude; determining the AC current amplitude is a low AC current amplitude based on an armature within the solenoid being in a retracted position or determining the AC current amplitude is a high AC current amplitude based on the armature being in an extended position with the control logic, and where the AC current amplitude is determined utilizing the AC signal for synchronous demodulation; and determining a temperature fault based on the DC offset current amplitude falling below a DC offset current amplitude threshold.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: May 7, 2024
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Onno Martens, Lars Larsson, Christof Heilemann
  • SOLENOID SYSTEM WITH POSITION AND TEMPERATURE DETECTION
    Publication number: 20220236328
    Abstract: A solenoid system and method can include: providing an energizing voltage to a coil of a solenoid; providing an AC signal superimposed onto the energizing voltage; detecting current through the coil including an AC current amplitude induced by the AC signal and including a DC offset current amplitude; determining the AC current amplitude is a low AC current amplitude based on an armature within the solenoid being in a retracted position or determining the AC current amplitude is a high AC current amplitude based on the armature being in an extended position with the control logic, and where the AC current amplitude is determined utilizing the AC signal for synchronous demodulation; and determining a temperature fault based on the DC offset current amplitude falling below a DC offset current amplitude threshold.
    Type: Application
    Filed: January 19, 2022
    Publication date: July 28, 2022
    Applicant: Maxim Integrated Products, Inc.
    Inventors: Onno Martens, Lars Larsson, Christof Heilemann