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Device for measuring sound source distribution in three-dimensional space
US8950262B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8950262-B2 |
| Application number | US-201013505869-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2010 |
| Priority date | Nov 10, 2009 |
| Publication date | Feb 10, 2015 |
| Grant date | Feb 10, 2015 |
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Abstract
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A device for measuring a sound source distribution in three-dimensional space is provided in which tracer particles included around an object are irradiated with a two-dimensional laser sheet within an x-y plane at two times separated by a short time interval, images of the irradiated tracer particles are taken, and two in-plane velocity components of the tracer particles in the laser sheet and one out-of-plane velocity component perpendicular to the laser sheet are measured based on the images taken. Further, the velocity field of the three velocity components in three-dimensional space is measured by obtaining three velocity components within a plurality of planes spaced apart in a z-axis direction perpendicular to the laser sheet and stacking the three velocity components within the plurality of planes in the z-axis direction. The sound source distribution around the object is measured from the velocity field.
First claim
Opening claim text (preview).
The invention claimed is: 1. A device for measuring a sound source distribution in three-dimensional space, the device comprising: a particle image velocimetry system that irradiates, with laser light, tracer particles included in a flow field around an object at two times that are separated by a short time interval, and measures a velocity field of three velocity components in three-dimensional space from images at the two times of the tracer particles irradiated with the laser l…
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Physics · mapped topic
- G01M9/067Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8950262B2 cover?
- A device for measuring a sound source distribution in three-dimensional space is provided in which tracer particles included around an object are irradiated with a two-dimensional laser sheet within an x-y plane at two times separated by a short time interval, images of the irradiated tracer particles are taken, and two in-plane velocity components of the tracer particles in the laser sheet and…
- Who is the assignee on this patent?
- Teramura Minoru, Fukuchi Yuichi, Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01M9/067. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).