Patent ID: 11946652
Assignee: DIEHL AKO STIFTUNG & CO. KG
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G  H | IPC F  G  H

Claim 7:
8. A method for monitoring a switching state of an electromagnetic valve, the method comprising:
providing a magnetic coil optionally receiving current from a current source, a valve element and a movable element coupled to the valve element, the magnetic coil, when excited, conveying the movable element in one direction to move the valve element from an initial position into an active position;
measuring at least one of a voltage level of the magnetic coil or a current level through the magnetic coil;
establishing a switching state of the electromagnetic valve corresponding to the position of the valve element based on an intended current supply state of the current source and at least one of a measured current or voltage characteristic;
inferring a movement of the movable element of the electromagnetic valve when a signal peak is detected in at least one of the measured current or voltage characteristic; and
determining a fault state of at least one of the current supply or of the electromagnetic valve based on the detection of a signal peak in the measured current or voltage characteristic during an intended continuing current supply to the magnetic coil.