Method for detecting a condition of a pump assembly
AssigneeGrundfos Holding A/S
InventorMichael Helbo Nygaard
Life of this patent
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Abstract
A video sequence of a pump assembly or of a pump assembly part is produced. The video sequence is evaluated by way of digital signal processing assisted by a data base. A condition of the pump assembly is determined by way of this evaluation. In particular it is determined whether the pump runs in a designated manner or it is determined whether unallowably high oscillations are ascertained in a region, wherein this would indicate a defect, for example bearing damage or an unfavorable speed.
Claims20
A method for detecting a condition of a pump assembly or a pump assembly part, the method comprising the steps of:
- recording a video sequence of the pump assembly which is in operation, or recording a video sequence of at least one or more parts of the pump assembly;
- and
- determining a condition of the pump assembly or one or more parts thereof based on changes in pictures of the video sequence, wherein a speed of changes between pixels or pixel groups of successive pictures of the video sequence are determined, and the determining of the condition of the pump assembly is effected on the basis of the determined speeds of changes, wherein the pixels or pixel groups are grouped or spatially assigned in a grouped manner, in accordance with the determined speeds of changes thereof, wherein the determined speed of changes and a spatial assignment of the determined changes are compared to values stored in a data base and the condition is determined on the basis of the comparison, wherein, on the basis of the comparison, it is determined whether and where predefined speed values are exceeded.
A method for detecting a condition of a pump assembly or a pump assembly part, the method comprising the steps of:
- providing a data base;
- recording a video sequence of the pump assembly in an operating state or at least one part of the pump assembly;
- determining a speed of changes between pixels or pixel groups of successive pictures of the video sequence, wherein the pixels or pixel groups are grouped or spatially assigned in a grouped manner, in accordance with the determined speeds of changes thereof;
- comparing the determined speed of changes and a spatial assignment of the determined changes to values stored in the data base to provide a comparison;
- determining a condition of the pump assembly or the at least one part thereof based on the comparison.
Dependencies are inferred from the claim text.