Preparation method of spherical-crown transmitting transducer with high frequency and wide wave beam

A technology of transmitting transducers and spherical caps, which is applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., can solve the manufacturing cost and difficulty High, prone to side shift, deformation and other problems, to achieve the effect of large beam width and simple manufacturing process

Active Publication Date: 2011-09-07
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

The advantage of its transmitting transducer is high precision, but the disadvantage is that the production cost and difficulty are high, and it is easy to have problems such as side shift and deformation during the production process

Method used

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  • Preparation method of spherical-crown transmitting transducer with high frequency and wide wave beam
  • Preparation method of spherical-crown transmitting transducer with high frequency and wide wave beam
  • Preparation method of spherical-crown transmitting transducer with high frequency and wide wave beam

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0017] The present invention presents a spherical crown-shaped high-frequency and wide-beam high-power transducer, which adopts the front matching layer and the back lining technology, uses the spherical crown-type array first, and then fills it with polymer, thereby obtaining a square sound radiation area . The working frequency of the transducer is 300kHz. Through analysis and experiments, the optimal curvature radius and size of the spherical cap and the optimal spacing between array elements are determined. The transducer's 300kHz horizontal and vertical beamwidths are greater than or equal to 46 degrees (-3dB fluctuation), such as Figure 4 and Figure 5 shown. The fluctuation of the voltage transmission response within the range of 265 ~ 330kHz is 6dB ( image 3 ), at 300kHz, 846.9w electric power is applied, the sound source level is 206.8dB, and t...

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Abstract

The invention relates to a preparation method of a spherical-crown transmitting transducer with high frequency and wide wave beam, comprising the following steps of: employing a spherical crown shape array distribution, cutting four sides of the spherical crown to form a square shape; distributing array elements according to a certain spacing distance and then filling polymer into clearances among the array elements; grouting matched layers, executing vacuumization treatment on the matched layers firstly, executing vacuumization treatment and heating in the grouting process; grouting a spherical-crown polyurethane layer outside the matched layers; connecting anodes, wherein the anodes of the array elements are connected in parallel; leading out an anode lead; adhering one side of the anode onto the spherical-crown surface of a foamed polyurethane pedestal; after solidifying a glue layer, sharing cathodes of the array elements and leading out a cathode lead; and adhering a backside lining of an assembled spherical-crown array with a backseat and leading out the lead from a routing groove. The invention is applicable to seaport monitoring, frogman detection, underwater target identification and obstacle avoidance and navigation of underwater vehicles, has the advantages of simple manufacturing process, wide width of high-frequency wave beams and high source grade of each watt.

Description

technical field [0001] The invention belongs to the field of underwater transducers, and mainly relates to a method for preparing a high-bandwidth beam spherical crown-shaped transmitting transducer. Background technique [0002] High-frequency broadband beam spherical transmitting transducers have not been reported in China. Internationally, the product "choscope-HI" launched by British CodaOctopus Ltd in early 2006, in which the high-frequency transmitting transducer is bent from 1-3 piezoelectric composite materials, has high requirements for production equipment. , the bending process must be designed in advance, so as to reduce the stress and finally reach the static balance. In bending, the outer surface is under tension and the inner surface is under compressive stress. In order to reduce the internal stress, the material will expand, compress and move. The polymer as the matrix material should be selected to be easy to form, and require less compressibility and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/24H01L41/23
Inventor 唐义政仲林建唐军钟琴琴李建成朱城海
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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