Mechanical Vibration Diagnosis Using Portable Accelerometers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mechanical systems with moving parts generate vibrations that are difficult to diagnose automatically, as existing methods lack efficient and cost-effective means to analyze these vibrations for operational states and predict future performance without specialized equipment.
Innovation Solution
A method using a portable communications device to acquire and transmit vibration-related data to a remote processing unit, which applies a learned relationship between vibration patterns and operational states to diagnose the mechanical system, indicating current operation, predicting future performance, and recommending maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized vibration sensors and analyzers are used to diagnose mechanical systems, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a portable communications device (smartphone, tablet, or laptop) with an existing accelerometer to capture vibration data, replacing the need for specialized vibration sensors. The accelerometer, originally designed for motion detection in consumer electronics, is repurposed to measure mechanical vibrations, achieving sufficient measurement precision without requiring expensive specialized sensing equipment.
Solution Approach 2:
The portable communications device serves multiple functions: it acts as both the vibration sensor (using its built-in accelerometer) and the vibration analyzer (using its processing capabilities and software). This multi-functionality eliminates the need for separate specialized vibration analysis equipment, reducing device complexity while maintaining diagnostic capabilities.
2Reliability
If specialized vibration analysis equipment is deployed, then diagnosis reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The portable communications device leverages its existing built-in accelerometer and processing capabilities to perform vibration analysis without requiring external specialized equipment. The device uses its own resources (sensor, processor, software) to conduct the diagnosis, making the system self-sufficient and eliminating the need for specialized vibration analysis instruments.
Solution Approach 2:
The patent replaces the mechanical/specialized vibration sensing system with an electronic consumer device system. The accelerometer in the portable communications device, originally designed for detecting device motion, is used to sense mechanical vibrations, substituting specialized mechanical sensors with a more accessible electronic sensor that is already present in common devices.
3Measurement precision
If comprehensive vibration data collection from multiple mechanical systems is performed, then relationship accuracy is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary data collection and relationship modeling during normal operation of mechanical systems. Vibration data and operational parameters are continuously or periodically collected in the background, and the relationship model is trained and refined using this accumulated data, rather than requiring dedicated time for separate data collection phases.
Solution Approach 2:
The vibration data collection and relationship modeling operate continuously or periodically during normal system operation. The portable communications device can collect vibration data asynchronously while the mechanical system is running, and the relationship model is continuously refined using new data, eliminating the need to stop operations for dedicated data collection periods.
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 automatic, efficient, and cost-effective diagnosis of mechanical systems by analyzing vibration patterns, allowing for predictive maintenance and non-destructive testing without the need for specialized vibration sensors or analyzers.
Implementation Method 1
obtaining data that identifies the mechanical system; obtaining additional sensed data that indicates a property of the mechanical system... the portable communications device includes an accelerometer
Data Source
AI summary
A method for automatic diagnosis of a mechanical system of a group of mechanical systems sharing mechanical characteristics includes obtaining data relating to a vibration. The vibration-related data is acquired by a portable communications device configured to communicate with a remote processor. The processor automatically diagnoses the mechanical system by applying a relationship to the obtained vibration-related data. The relationship is based on sets of vibration-related data previously obtained from the mechanical systems. Each set of vibration-related data relates to vibrations of a mechanical system. The relationship is further based on sets of operation data previously obtained for mechanical systems of the group. Each set of operation data indicates a previous state of operation of a mechanical system. Each of the previous states of operation is associated with at least one of the previously obtained sets of vibration-related data.