US 12,130,198 B2
Acoustic analysis of a state of a machine
Oliver Jöhnßen, Nuremberg (DE); Daniel Krüger, Roth (DE); and Florian Kubo, Bavaria (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 17/622,704
Filed by SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
PCT Filed Jun. 26, 2019, PCT No. PCT/EP2019/066939
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/259819, PCT Pub. Date Dec. 30, 2020.
Prior Publication US 2022/0252481 A1, Aug. 11, 2022
Int. Cl. G01M 13/00 (2019.01)
CPC G01M 13/00 (2013.01) 13 Claims
OG exemplary drawing
 
1. A method for generating at least one reference acoustic signal for an acoustic analysis of a state of a machine, the method comprising:
recording, by at least one sound transducer, acoustic individual signals, the acoustic individual signals comprising at least one acoustic individual signal for each of at least two components of the machine;
identifying, by a computing unit, a pose of a component of the at least two components from a storage device, the pose being a combination of a position and an orientation of the component in a three-dimensional space;
determining, by the computing unit, an expected acoustic overall signal based on the acoustic individual signals and the pose of the component, the determining of the expected acoustic overall signal comprising weighting the at least one acoustic individual signal for the component based on the identified pose; and
generating, by the computing unit, the at least one reference acoustic signal based on the expected acoustic overall signal,
wherein an anomaly in operation of the machine is identifiable based on the at least one reference acoustic signal.