公开(公告)号：US10949979B2

公开(公告)日：2021-03-16

申请号：US15856601

申请日：2017-12-28

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael Helbo Nygaard

IPC: G06T7/207 ,  F04D15/00 ,  F04D29/66 ,  G06K9/62

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.

公开(公告)号：US11867186B2

公开(公告)日：2024-01-09

申请号：US17291144

申请日：2019-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael Helbo Nygaard ,  Flemming Munk ,  Søren Kjeldsen

IPC: F04D15/00 ,  F04D1/06

CPC classification number: F04D15/0088 ,  F04D1/06

Abstract: A sensor arrangement is for monitoring a circulation pump system (1) which includes at least one pump (3). The sensor arrangement includes a first vibration sensor (5) installed at a first pump part (11) of one of the at least one pump (3) and a second vibration sensor (7) installed at a second pump part (13) of the pump (3) and an evaluation module (9). The first pump part (11) and the second pump part (29) have a distance to each other. The evaluation module (9), is configured to discriminate between at least two of k≥2 different types of faults based on comparing first signals received from the first vibration sensor (5) and second signals received from the second vibration sensor (7).