Vibration Sensor Self-Diagnosis via Data Integration

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Solution Overview

Problem

Conventional vibration sensors require complex configurations and test signals for self-diagnosis, leading to high costs and burdens on maintenance personnel, especially when used in industrial equipment where reliability has not been confirmed.

Innovation Solution

A self-diagnosis method for vibration sensors that integrates measured vibration data and compares it with a reference value to diagnose abnormalities, eliminating the need for test signals and allowing the use of general-purpose sensors, thereby simplifying the configuration and reducing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a test signal is applied to the sensor body for self-diagnosis, then the sensor can diagnose its own abnormality, but the configuration becomes complicated and cost increases

Engineering Contradiction:
Improveself-diagnosis capabilityVSAvoidconfiguration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The vibration sensor performs self-diagnosis by utilizing its own functional output (vibration measurement) rather than requiring external test signals. The sensor measures vibration data from the equipment it is monitoring and uses this data to diagnose its own abnormality, eliminating the need for separate test signal generation and input circuits.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The vibration sensor serves multiple functions: it simultaneously performs vibration measurement for predictive maintenance and self-diagnosis. By using the same vibration data for both purposes, the sensor eliminates the need for dedicated test signal circuits, simplifying the overall configuration.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If a test signal is applied to the sensor body for self-diagnosis, then the sensor can diagnose its own abnormality, but the cost increases

Engineering Contradiction:
Improveself-diagnosis capabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The vibration sensor performs self-diagnosis by utilizing its own functional output (vibration measurement) rather than requiring external test signals. The sensor measures vibration data from the equipment it is monitoring and uses this data to diagnose its own abnormality, eliminating the need for separate test signal generation and input circuits.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The vibration sensor serves multiple functions: it simultaneously performs vibration measurement for predictive maintenance and self-diagnosis. By using the same vibration data for both purposes, the sensor eliminates the need for dedicated test signal circuits, simplifying the overall configuration.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Measurement precision

If periodic monitoring is performed with a vibration measuring machine, then measurement can be conducted, but the burden on maintenance personnel increases

Engineering Contradiction:
Improvevibration measurement capabilityVSAvoidmaintenance personnel burden
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The vibration sensor performs self-diagnosis by utilizing its own functional output (vibration measurement) rather than requiring external test signals. The sensor measures vibration data from the equipment it is monitoring and uses this data to diagnose its own abnormality, eliminating the need for separate test signal generation and input circuits.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously monitors vibration data and provides feedback to diagnose sensor abnormality. The integrator accumulates vibration data over time, and the diagnoser compares the integrated value against reference values to detect abnormalities, enabling continuous self-assessment without human intervention.

Inventive Principle:
Principle #23Feedback

4Ease of manufacture

If inexpensive sensors are used for continuous monitoring, then cost is reduced, but reliability cannot be confirmed for industrial equipment

Engineering Contradiction:
Improvesensor costVSAvoidsensor reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The vibration sensor performs self-diagnosis by utilizing its own functional output (vibration measurement) rather than requiring external test signals. The sensor measures vibration data from the equipment it is monitoring and uses this data to diagnose its own abnormality, eliminating the need for separate test signal generation and input circuits.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously monitors vibration data and provides feedback to diagnose sensor abnormality. The integrator accumulates vibration data over time, and the diagnoser compares the integrated value against reference values to detect abnormalities, enabling continuous self-assessment without human intervention.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11320305B2Self-diagnosis method for vibration sensor and vibration sensor system equipped with self-diagnosis function
Publication Date: 2022.05.03 ROHM CO LTD
  • US11320305B2 patent drawing
  • US11320305B2 patent drawing
  • US11320305B2 patent drawing

AI summary

A self-diagnosis method for a vibration sensor attached to vibrating equipment includes measuring vibration data of the vibrating equipment by the vibration sensor, integrating the vibration data, and diagnosing whether or not the vibration sensor is abnormal by comparing an integrated value of the vibration data with a reference value.