Vibration Measurement Correction Using Imaging Displacement Tracking
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Solution Overview
Problem
Vibration measurement apparatuses installed on infrastructural components like bridges can be vibrated by the component itself, causing superimposition of vibrations and making accurate measurement difficult.
Innovation Solution
A measurement system that includes a measurement apparatus, an imaging apparatus to capture the measurement apparatus, and a correction processing apparatus to calculate displacement and movement, allowing for the correction of object vibrations by subtracting the measurement apparatus's own vibration data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the measurement apparatus is installed on an infrastructural component to enable contactless vibration measurement, then measurement efficiency is improved, but the apparatus itself becomes vibrated causing measurement accuracy to deteriorate
Solution Approach 1:
The imaging apparatus serves as an intermediary to capture images of the measurement apparatus, enabling indirect observation of the measurement apparatus's position without physically contacting it. This mediator allows us to detect the measurement apparatus's vibrations caused by installation on the infrastructural component.
Solution Approach 2:
The system uses feedback by continuously capturing images of the measurement apparatus with the imaging apparatus, calculating its displacement over time, and using this information to correct the vibration measurements. The measured vibration data is fed back to compensate for the measurement apparatus's own vibrations.
2Adaptability or versatility
If the measurement apparatus is installed in a location likely to be vibrated, then the ability to measure object vibrations is improved, but the superimposition of apparatus vibrations makes accurate measurement difficult
Solution Approach 1:
The invention extracts the harmful vibration components from the measurement data by separately detecting the measurement apparatus's vibrations using the imaging apparatus and subtracting these from the total measured vibrations, leaving only the object's vibration components.
Solution Approach 2:
The system segments the total vibration signal into two components: the object's vibrations and the measurement apparatus's vibrations. By using the imaging apparatus to specifically track the measurement apparatus's position, the total vibration is divided and each component can be analyzed separately.
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 accurate measurement of object vibrations even when the measurement apparatus is installed in a vibrating location, effectively isolating the object's vibrations from the apparatus's own movements.
Implementation Method 1
an imaging apparatus that is disposed so as to capture an image of the measurement apparatus
Data Source
AI summary
The measurement system 100 includes: a measurement apparatus 20 that measures vibrations of an object 40; an imaging apparatus 30 that is located so as to capture an image of the measurement apparatus 20; and a correction processing apparatus 10. the correction processing apparatus 10 includes: a displacement calculation unit 11 that calculates a displacement of the measurement apparatus 20 based on time-series images of the measurement apparatus 20 output from the imaging apparatus 30; a movement amount calculation unit 12 that calculates an amount of movement of the measurement apparatus 20 relative to the imaging apparatus 30, based on the displacement; and a correction processing unit 13 that corrects vibrations of the object measured by the measurement apparatus 20, using the calculated amount of movement of the measurement apparatus 20.