Three-dimensional vector sound intensity probe

A sound intensity probe and three-dimensional vector technology, which is applied to the measurement of ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of difficult to ensure the accuracy of spatial positioning, time-consuming measurement process, high cost, etc., to save measurement time , simple structure, and the effect of ensuring the accuracy of spatial positioning

Inactive Publication Date: 2017-11-24
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0003] In the early days, a sound intensity probe was used to measure the three directions of X, Y, and Z to obtain the sound intensity components. The specific operation required three samplings, and the measurement process took a long time, making it difficult to ensure the accuracy of spatial positioning.
[0004] The B&K WA0447 three-dimensional vector probe produced by the Danish B&

Method used

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  • Three-dimensional vector sound intensity probe
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  • Three-dimensional vector sound intensity probe

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1: as Figure 1-7 As shown, a three-dimensional vector sound intensity probe includes a microphone group, a layout frame group, a support rod 7, a handle 8, a lock nut 9, a baffle 10, a lock screw 11, a fixed column 12, a distance column 13, a center Rod 14 and central square rod 15, the microphone group includes microphone I1, microphone II2, microphone III3, and microphone IV4, and the arrangement frame group includes arrangement frame I5 and arrangement frame II6;

[0030] The microphone I1 and microphone II2 are fixed in the circular holes at both ends of the arrangement frame I5, the microphone III3 and the microphone IV4 are fixed in the circular holes at both ends of the arrangement frame II6, and the end of the central square rod 15 without threaded hole is inserted into the front end of the support rod 7. In the groove, and attach the baffle plate 10 on the upper surface of the groove of the front end of the support rod 7 and lock it by the locking s...

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Abstract

The invention discloses a three-dimensional vector sound intensity probe comprising a microphone set, an arrangement frame set, a supporting rod, a handle, a locking nut, a baffle plate, locking screws, a fixed column, a spacing column, a center rod and a center square rod. The microphone set includes a microphone I, a microphone II, a microphone III and a microphone IV. The arrangement frame set includes an arrangement frame I and an arrangement frame II. The sound intensity components of three directions of the measuring points in a sound field can be acquired through one time of measurement so that the space positioning precision can be guaranteed, the measurement process can be simplified and the measurement time can be saved; and the probe only uses four microphones so that the structure is simple and use is convenient, and the probe can be widely used for the field of noise source identification and control.

Description

technical field [0001] The invention relates to a three-dimensional vector sound intensity probe, which belongs to the field of noise source identification and control. Background technique [0002] The commonly used sound intensity measurement method is the double-microphone cross-power spectrum sound intensity measurement method, that is, the measured sound pressure is measured by two microphones that are very close to each other, so as to obtain a single sound intensity in a certain direction. Because the sound intensity vector can not only determine the size of the sound propagating in space, but also determine its direction, so the measurement of three-dimensional vector sound intensity is of high value in the field of noise source identification. However, the key to obtaining the vector sound intensity is to measure the sound intensity components in the three directions of X, Y, and Z, so as to determine the size and direction in space. [0003] In the early days, a s...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 鲁毅柳小勤伍星刘韬刘畅
Owner KUNMING UNIV OF SCI & TECH
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