Compact Vibration and Noise Mapping for Source Vector Detection
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Solution Overview
Problem
Current methods for identifying and addressing vibration and noise issues in mechanical systems are time-consuming and require manual intervention, failing to quickly determine the source of problems and orientation vectors.
Innovation Solution
A compact system integrating contactless one-dimensional vibration and noise measurement units on a moving arm or Cartesian mechanism, allowing for rapid, automatic vibration and noise mapping, generation of shell models, and analysis of orientation vectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple vibration sensors and near-field microphones are mounted on mechanical systems and measurements are repeated manually, then vibration and noise sources can be identified, but the measurement process becomes time-consuming and requires multiple days for data collection and processing
Solution Approach 1:
The patent combines multiple measurement functions (vibration sensing, acoustic measurement, and imaging) into a single integrated system. The vibration sensor and acoustic measurement unit are merged into one device that can simultaneously capture both vibration and acoustic data, eliminating the need for separate manual measurement campaigns with multiple sensors
Solution Approach 2:
The patent replaces manual mechanical positioning and repeated measurement campaigns with an automated system that uses optical imaging and electronic data processing. The system captures vibration and acoustic data automatically and processes it through image processing algorithms, substituting manual mechanical operations with automated electronic systems
2Loss of time
If acoustic cameras are used to localize noise sources in real-time, then noise mapping can be obtained quickly, but information on the vector orientation of noise cannot be obtained
Solution Approach 1:
The patent merges acoustic measurement capabilities with vibration sensing and imaging functions into a single integrated unit. This combination allows the system to simultaneously capture acoustic pressure data, vibration data, and spatial information, enabling both noise mapping and orientation vector determination from one measurement campaign
Solution Approach 2:
The patent adds vector orientation information as an additional dimension to the acoustic measurement. By integrating vibration sensors that can detect directional vibrations with acoustic microphones, the system transitions from scalar acoustic pressure measurement to vector-based acoustic-vibration characterization, providing both location and orientation information
3Loss of information
If acoustic holography or sound intensity measurement methods are used to obtain orientation vectors, then vector information can be obtained, but the measurement process requires manual positioning and takes a long time
Solution Approach 1:
The patent replaces manual mechanical positioning of sensors with an automated system that uses optical imaging and electronic coordinate tracking. The integrated unit automatically records spatial coordinates and orientation data, and the control unit processes this information electronically to generate vibration and acoustic maps with vector information, eliminating time-consuming manual positioning
Solution Approach 2:
The system performs self-positioning and self-measurement by integrating all sensors into a single movable unit that automatically tracks its own location and orientation. The unit can autonomously capture vibration and acoustic data at multiple positions without requiring external manual intervention for sensor relocation
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 quick and detailed identification of vibration and noise problems in mechanical systems, reducing measurement time and eliminating the need for manual manpower, while providing accurate vibration and acoustic maps with orientation vectors.
Implementation Method 1
at least one contactless vibration measurement unit (3) adapted to measure the vibration of a test object (O)
Implementation Method 2
at least one noise measurement unit (4) adapted to measure sound intensity and/or particle velocity and/or sound pressure
Data Source
Figure 1~2
Figure 3
AI summary
The present invention is related to at least one vibration measurement sensor (3) adapted to measure the vibrations formed on a test object (0) with moving mechanical systems, at least one noise measurement sensor (4) adapted to measure sound intensity and/or particle velocity and/or sound pressure in at least one direction, i.e. on one axis, and a vibration and noise mapping system (1) that is adapted to control the vibration measurement sensor (3) and the noise measurement sensor (4), to provide the vibration and acoustic performance data of the test object (0) according to the data obtained from these units (3, 4) and to identify the areas on the test object (0) that are problematic or need to be studied further in order to improve vibration and acoustic performances thereof, and to control the operation of test objects (0) such as moving mechanical systems under different conditions.