Remote high-directivity low-frequency sound wave transmission and measurement device and method

A low-frequency sound wave and measuring device technology, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effect of simple device structure

Inactive Publication Date: 2013-04-10
SHANGHAI UNIV
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems that there is no special long-distance high-directivity low-frequency sound wave emission and measurement device, and provide a long-distance high-directivity low-frequency sound wave emission and measurement device and method, which can realize long-distance high directivity Emission and Measurement of Sexual Low Frequency Sound Waves

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  • Remote high-directivity low-frequency sound wave transmission and measurement device and method
  • Remote high-directivity low-frequency sound wave transmission and measurement device and method

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Embodiment Construction

[0018] Preferred embodiments of the present invention are discussed as follows in conjunction with the accompanying drawings:

[0019] see figure 1 , a long-distance high-directivity low-frequency sound wave emission and measurement device, including a computer 101, a signal processor 102, an acoustic parameter array 103, a sound level meter 104 and a data acquisition card 105, and the computer 101 is sequentially connected to the data by wires Acquisition card 105, described signal processor 102 and described acoustic parameter array 103, constitute the acoustic wave emission system; Described sound level meter 104 connects described data acquisition card 105 and described computer 101 by wire successively, constitutes the acoustic wave measurement system.

[0020] see figure 2 , a method for emitting and measuring long-distance high-directivity low-frequency sound waves, using the above-mentioned long-distance high-directivity low-frequency sound wave emission and measuri...

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Abstract

The invention discloses a remote high-directivity low-frequency sound wave transmission and measurement device and a method. The device comprises a computer, a signal processor, an acoustics parametric array, a sound level meter and a data acquisition card; the computer is sequentially connected with the data acquisition card, the signal processor and the acoustics parametric array through wires to form a sound wave transmission system; the sound level meter is sequentially connected with the data acquisition card and the computer through wires to form a sound wave measurement system; a high-directivity high-frequency sound wave is transmitted by the sound wave transmission system, a low-frequency sound wave is generated on a to-be-detected reference position, and a sound wave frequency and a sound pressure level amplitude on the to-be-detected reference position are detected by a sound pressure level detector. The remote high-directivity low-frequency sound wave transmission and measurement device and the method can achieve remote and high-directivity transmission and real-time measurement of a low-frequency sound wave.

Description

technical field [0001] The invention relates to the technical field of sound wave detection, in particular to a device and method for emitting and measuring long-distance high-directivity low-frequency sound waves. Background technique [0002] Long-distance high-directivity low-frequency sound wave emission technology has broad application prospects in the field of sound wave detection technology, and has always been a difficult problem in the field of sound wave detection engineering technology. High-frequency sound waves (such as ultrasonic waves) have strong directivity, but are severely attenuated in the air and are difficult to transmit and spread over long distances; low-frequency sound waves have relatively small attenuation in the air but have strong divergence characteristics. The existing acoustic parameter array can realize the long-distance high-directional high-frequency sound wave emission function under certain conditions, and generate low-frequency sound wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 王驰周瑜秋丁卫沈高炜吴文雯
Owner SHANGHAI UNIV
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