Bearing Type Identification via Vibration Frequency Analysis

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Solution Overview

Problem

Identifying and replacing bearings in machines is challenging when the type of bearing is unknown, as it complicates condition detection and maintenance, especially when bearings deteriorate or fail.

Innovation Solution

A device with a detection unit to monitor and detect vibration frequencies, and an identification unit that compares these frequencies with a database to determine the bearing type, allowing for accurate diagnosis, service life estimation, and replacement planning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the bearing type is unknown, then the bearing can be installed and operated, but the condition detection and maintenance become difficult

Engineering Contradiction:
Improvebearing installationVSAvoidbearing condition detection
Core Design Contradiction:
Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The bearing identification device enables the bearing system to automatically identify its own type through vibration frequency analysis. The detection unit monitors the bearing's vibration characteristics, and the identification unit automatically determines the bearing type by comparing these characteristics with stored reference data, eliminating the need for manual identification and enabling automated condition monitoring.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual bearing identification methods with an automated electronic system that uses vibration analysis. Instead of physically examining the bearing or consulting documentation, the system substitutes mechanical inspection with electronic sensing and signal processing to automatically identify bearing type and monitor condition.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If manual bearing identification methods are used, then no additional equipment is needed, but the identification process becomes time-consuming and inaccurate

Engineering Contradiction:
Improveidentification equipmentVSAvoididentification time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The patent replaces manual bearing identification methods with an automated electronic system that uses vibration analysis. Instead of physically examining the bearing or consulting documentation, the system substitutes mechanical inspection with electronic sensing and signal processing to automatically identify bearing type and monitor condition.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates a digital copy of the bearing's vibration signature and compares it with stored reference patterns. By copying and analyzing the vibration characteristics rather than physically examining the bearing, the system achieves rapid automated identification without manual intervention.

Inventive Principle:
Principle #26Copying

3Reliability

If vibration analysis is performed without knowing the bearing type, then continuous monitoring is possible, but accurate diagnosis cannot be made

Engineering Contradiction:
Improvecontinuous monitoringVSAvoiddiagnosis accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The system establishes a feedback loop where vibration data is continuously collected, bearing type is identified based on the vibration characteristics, and this identified type is then used to interpret subsequent vibration data with appropriate reference values. This feedback mechanism ensures that continuous monitoring becomes increasingly accurate as the system learns the specific characteristics of the installed bearing.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary vibration analysis to identify the bearing type before proceeding with detailed condition diagnosis. By first determining the bearing type through initial vibration pattern recognition, the system prepares the necessary reference data and parameters needed for accurate subsequent diagnosis and condition assessment.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the identification of installed bearings without prior knowledge, facilitating timely replacement and condition analysis by transforming vibration signals into the frequency domain for pattern matching and comparison with stored data.

Implementation Method 1

a detection unit for detecting a vibration frequency of the bearing

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS11493405B2Device for identifying a type of a bearing
Publication Date: 2022.11.08 AB SKF SKF PATENT DEPARTMENT
  • US11493405B2 patent drawing

AI summary

A device for identifying a type of a bearing is provided. The device includes a detection unit for detecting a vibration frequency of the bearing, and an identification unit for identifying the type of the bearing based on the detected vibration frequency.