Method for monitoring a technical device, technical device and system with a technical device and with a sound transducer device
The acoustic resonance device connected to bearings via vibration transmission amplifies acoustic emissions for reliable early detection of damage, addressing the inefficiencies of existing monitoring methods by improving signal quality and reducing maintenance costs.
DE102025108655B3Undetermined Publication Date: 2026-07-09QLAR EUROPE GMBH
Patent Information
- Application Number
- DE102025108655
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-07-09
- Estimated Expiration
- 2045-03-07
AI Technical Summary
Technical Problem
Existing methods for monitoring bearings in technical devices are costly, require complex sensors, and struggle with signal interference, providing inadequate early detection of damage.
Method used
An acoustic resonance device connected to the bearing via vibration transmission, amplifying acoustic emissions through air, allowing for reliable detection of bearing damage using a sound transducer without mechanical contact, and analyzing Fourier spectra for early identification of impairments.
Benefits of technology
Provides a cost-effective and interference-resistant method for early detection of bearing damage, enhancing signal-to-noise ratio and enabling precise identification of impaired bearings.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
In a method for monitoring a technical device with at least one bearing (3) for a component (4) that rotates during normal operation of the technical device, acoustic emissions transmitted through the air by the bearing (3) and the rotating component (4) are detected by a sound transducer device (8). An acoustic resonance device (6) with at least one predefinable natural frequency is connected to the bearing (3) via vibration transmission. Over a specified detection period, the acoustic emissions of the acoustic resonance device (6) are detected by the sound transducer device (8). At at least one predefinable sound emission detection frequency, a damage parameter for damage to the bearing (3) is determined based on the sound emissions detected at that frequency.For this purpose, the acoustic emissions of the acoustic resonance device (6) can be recorded during a recording period, and subsequently a Fourier spectrum of the recorded acoustic emissions can be determined using a Fourier transform of the recorded acoustic emissions. The damage parameter is then determined based on the Fourier spectrum of the acoustic emissions recorded during the recording period.
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Citation Information
Patent Citations
Bearing state diagnostic apparatus
US20090114020A1
Engine Health Monitoring Using Acoustic Sensors
US20170260871A1