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Sound field measuring apparatus and method

A measuring device and sound field technology, applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as quantitative measurement difficulties and achieve the effect of calibration

Active Publication Date: 2015-11-11
HOHAI UNIV CHANGZHOU
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Problems solved by technology

However, this method is only suitable for the measurement of low-frequency ultrasonic fields below 50KHz, and the quantitative measurement of high-frequency sound fields above 0.3MHz is difficult

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  • Sound field measuring apparatus and method

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0043] figure 1 It is a block diagram of an embodiment of the sound field measurement device provided by the present invention, including: a data processor 101, an excitation signal generator 102, an excitation signal amplifier 103, a transducer 104, a laser 105, a diverging lens 106, a convex lens 107, a first A beam splitter 108 , a second beam splitter 109 , a mirror 110 , a third beam splitter 111 , a Fourier transform lens 112 , a first image sensor 113 and a ...

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Abstract

The invention discloses a sound field measuring apparatus. The apparatus comprises a data processor, an excitation signal generator, an excitation signal amplifier, an energy transducer, a laser, a first image sensor and a second image sensor. The data processor, the excitation signal generator, the excitation signal amplifier and the energy transducer are sequentially connected. The laser, a divergent lens, a convex lens, a first spectroscope, the sound field generated by the energy transducer, a second spectroscope, a Fourier transformation lens and the first image sensor are sequentially arranged on the same straight line. A reflector is vertically arranged under a first spectroscope. A third spectroscope is vertically arranged under the second spectroscope. The reflector, the third spectroscope and the second image sensor are sequentially arranged on the same straight line. The first image sensor and the second image sensor are respectively connected with the data processor. The invention further provides a sound field measuring method. The sound field measuring apparatus and method can measure the sound field source pressure distribution and further measure the sound pressure in a quantitative way.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to a sound field measurement device and method. Background technique [0002] Acoustic field imaging is widely used in ultrasonic detection and ultrasonic medical treatment, especially in ultrasonic diagnosis. The sound pressure needs to be strictly limited and cannot exceed the specified value. For this reason, relevant regulations require that the relevant equipment be regularly tested for sound field sound pressure distribution before and during use. Measurement and quantitative measurement of sound field sound pressure, so it is particularly important to measure sound field sound pressure distribution and accurately quantitatively measure sound pressure. [0003] Traditional measurement methods have certain limitations, common measurement methods are: [0004] (1) Hydrophone method: because it is suitable for the measurement of sound fields in various fluids. However, this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 姜学平韩庆邦贾静朱昌平
Owner HOHAI UNIV CHANGZHOU
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