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A 3D Acoustic Sensor Array for Target Noise Testing

A technology of acoustic sensors and sensor arrays, applied in the direction of measuring ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., can solve the problem that the background noise cannot be completely suppressed, and achieve the effect of constant beam width

Active Publication Date: 2021-04-13
张若愚
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Using a linear array for noise testing, the array can only form directivity in the vertical and horizontal directions, and cannot completely suppress background noise

Method used

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  • A 3D Acoustic Sensor Array for Target Noise Testing
  • A 3D Acoustic Sensor Array for Target Noise Testing
  • A 3D Acoustic Sensor Array for Target Noise Testing

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that, if there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each other, and all are within the protection scope of the present invention.

[0034] Such as Figure 5 to Figure 9 As shown, a three-dimensional sensor array for target noise testing described in the embodiment of the present invention adopts a helical biconical sensor array, and the helical biconical sensor array is evolved from a cylindrical array, and a cylindrical array It is formed by N (N is a positive integer) identical linear arrays uniformly distributed in the circumferential direction, fixing the lowermost ring, and rotating the top ring around the cylinder axis by an angle α, and the value of α is between 0° and 180°. The array of is the helical biconical array.

[0035] The vertical direc...

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Abstract

The invention discloses a three-dimensional acoustic sensor array for target noise testing, which adopts a spiral double cone acoustic sensor array, and the spiral double cone acoustic sensor array is composed of N linear arrays. The spiral biconical acoustic sensor array is evolved from a cylindrical array. A cylindrical array is formed by N identical linear acoustic sensor arrays evenly distributed in the circumferential direction. The lowermost ring is fixed, and the top layer is rotated around the cylindrical axis. The angle α, the value of α is between 0° and 180°, the formed array is a helical biconical array. Beneficial effects of the present invention: The present invention realizes the detection and measurement of radiation noise by the acoustic sensor array in three-dimensional space, and controls the beam width of the array by adjusting the position of the acoustic sensor, so that the beam width in the horizontal direction and the vertical direction are constant.

Description

technical field [0001] The invention relates to the technical field of acoustic measurement and acoustic detection, in particular to a three-dimensional acoustic sensor array suitable for broadband radiation noise testing and passive detection of three-dimensional spatially distributed noise sources. Background technique [0002] Noise measurement and noise source identification and positioning test technology is widely used in the environmental noise detection of ships, aerospace, automobile industry, home appliance industry, power plant workshop and other noise detection fields of various mechanical equipment. By understanding the location distribution and part of the noise source Sound characteristics provide a theoretical basis for reducing noise, and then improve product design, improve product sound radiation characteristics, and achieve vibration and noise reduction effects. [0003] Traditional noise measurement and noise source identification and location testing me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 张若愚
Owner 张若愚
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