公开(公告)号：US10823595B2

公开(公告)日：2020-11-03

申请号：US16744468

申请日：2020-01-16

Applicant: GRUNDFOS HOLDING A/S

Inventor： Ole Hartlev Pedersen

IPC: G01F1/66 ,  G01F1/32 ,  G01F15/06 ,  G01R23/17 ,  G01R23/177 ,  G01R23/16

Abstract: A method evaluates a frequency spectrum representative of at least one time-dependent signal, the at least one time dependent signal being derived from an output from a measuring device under predetermined measuring device operating conditions. The time-dependent signal, includes a portion being representative of a wanted signal, and a portion being representative of noise. The method includes the steps of determining, based on the frequency spectrum of the signal, a value representative of the noise floor, identifying, based on the frequency spectrum of the signal derived under the predetermined operating condition, a peak component, and if the peak component satisfies a relative peak criterion determined on the basis of the determined value representative of the noise floor, determining the wanted signal by applying a predetermined algorithm. The invention further relates to a method for determining flow of a measuring device, and a sensor.

公开(公告)号：US10578470B2

公开(公告)日：2020-03-03

申请号：US15783409

申请日：2017-10-13

Applicant: GRUNDFOS HOLDING A/S

Inventor： Ole Hartlev Pedersen

IPC: G01F1/66 ,  G01F15/06 ,  G01F1/32

Abstract: A method evaluates a frequency spectrum representative of at least one time-dependent signal, the at least one time dependent signal being derived from an output from a measuring device under predetermined measuring device operating conditions. The time-dependent signal, includes a portion being representative of a wanted signal, and a portion being representative of noise. The method includes the steps of determining, based on the frequency spectrum of the signal, a value representative of the noise floor, identifying, based on the frequency spectrum of the signal derived under the predetermined operating condition, a peak component, and if the peak component satisfies a relative peak criterion determined on the basis of the determined value representative of the noise floor, determining the wanted signal by applying a predetermined algorithm. The invention further relates to a method for determining flow of a vortex measuring device, and a vortex sensor.