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Orientation-adjustable high-frequency to low-frequency sound wave emission device

A technology that changes high frequency to low frequency and emits sound waves, which is applied in the direction of fluid that uses vibration

Active Publication Date: 2013-04-03
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the defects existing in the prior art, the purpose of the present invention is to overcome the problem that there is no dedicated multi-directional sound wave emission device available at present, and provide a high-frequency variable low-frequency sound wave emission device with adjustable azimuth, which can realize a Emission of long-distance high-directional low-frequency sound waves at any point in the area

Method used

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  • Orientation-adjustable high-frequency to low-frequency sound wave emission device

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Embodiment 1

[0019] see figure 1 , an azimuth-adjustable high-frequency to low-frequency sound wave emission device, including a computer 101, a signal processor 102, an acoustic parameter array 103, a motor control module 104, and a rotating platform 105, and the computer 101 is connected to the signal processing device in turn through wires. The device 102 and the acoustic parameter array 103 constitute an acoustic wave emission system; the rotating platform 105 connects the motor control module 104 and the computer 101 through wires to form an orientation adjustment system; the acoustic parameter array 103 is installed on the On the rotating platform 104, two directions of rotation around the Y axis and around the Z axis are realized.

[0020] The acoustic parameter array 103 and the signal processor 102 used in this embodiment adopt the 24-in diameter Audio Spotlight ultrasonic transducer array (24-in diameter Audio Spotlight ultrasonic transducer array) produced by the American Holoso...

Embodiment 2

[0022] see Figure 2~Figure 6 , an azimuth-adjustable high-frequency to low-frequency sound wave emission device, the above-mentioned rotating platform 104 is composed of two components that rotate around the Y-axis and around the Z-axis, and the rotation around the Y-axis is a secondary motion, which only needs to have precise angular positioning capabilities ; Rotation around the Z axis is the main movement, not only needs to have precise angular positioning capabilities, but also needs to have continuous rotation and forward and reverse motion capabilities, according to the different movements that need to be completed, the components that rotate around the Y axis and the components that rotate around the Z axis The following structures are adopted respectively:

[0023] The rotation assembly around the Y axis includes a first servo motor 1, a first bearing block with a seat 2, a rotating arm 3, a second bearing block with a seat 4, a bearing mounting block with a seat ...

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Abstract

The invention discloses an orientation-adjustable high-frequency to low-frequency sound wave emission device, which comprises a computer, a signal processor, a motor control module, a rotating platform and a parametric acoustic array, wherein the computer is connected with the signal processor and the parametric acoustic array in sequence through lead wires to form a sound wave emission system; and the rotating platform is connected with the motor control module and the computer through lead wires to form an orientation adjusting system. The sound wave emission system is used for emitting high-directivity sinusoidal sound waves and can generate a low-frequency sound wave with larger amplitude at certain position in the emission direction, wherein the low-frequency sound wave can be used for acoustic detection. The parametric acoustic array is arranged on the rotating platform, and the orientation adjusting system can be controlled by the computer to realize rotation in two directions. The orientation-adjustable high-frequency to low-frequency sound wave emission device can achieve long-distance emission of the high-directivity low-frequency sound wave at any point in one area.

Description

technical field [0001] The invention relates to the technical field of acoustic wave detection, in particular to an emitting device for emitting azimuth-adjustable high-frequency to low-frequency sound waves. Background technique [0002] Acoustic detection technology has been widely used in the field of engineering detection due to its advantages of non-contact, high penetration and convenience. It has always been a difficult point to carry out long-distance and high-directivity sound wave emission in the field of sound wave detection engineering technology. High-frequency sound waves have strong directivity, but they are severely attenuated in the air and it is difficult to carry out long-distance emission and propagation; low-frequency sound waves are relatively attenuated in air. Small but with strong divergent characteristics. The high-frequency variable-low-frequency sound wave emission technology can make sound waves have both high directivity and low attenuation cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/02
Inventor 王驰沈高炜林维坤蔡政吴文雯
Owner SHANGHAI UNIV