Preparation method of high-frequency multi-channel receiving matrix
A basic array, high frequency technology, applied in the field of preparation of high frequency multi-channel receiving arrays, can solve the problems of inability to make PVDF materials, low sensitivity, high requirements, etc., and achieve simple and reliable production process, high receiving sensitivity, and phase consistency. good effect
Active Publication Date: 2011-08-31
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology
Internationally, the product "choscope-HI" launched by British CodaOctopus Ltd in early 2006, in which the high-frequency multi-channel receiving array is directly divided into 48×48 primitives by a whole piece of PVDF material, and each primitive is a channel Receiving output has high requirements on raw materials and manufacturing processes. At present, we cannot produce PVDF materials that can be divided into 2304 channels in China.
The advantage of the basic array is that it is easy to make, but the disadvantage is that the PVDF material is difficult to make, the sensitivity is low, and problems such as side shift and deformation are easy to exist during the formation process.
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[0011] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0012] The preparation method of this high-frequency multi-channel receiving matrix of the present invention comprises the following steps:
[0013] Step 1: Element and layout design
[0014] In order to meet the requirements of 300kHz operating frequency and receiving beam width, the thickness vibration of the piezoelectric ceramic vibrator is used to avoid its strong coupling vibration area. After calculation and analysis, we choose ceramic particles with a diameter of Φ4mm and a thickness of 4mm, and set the distance between the primitives 1 to 5mm. The receiving matrix is a 48×48 line matrix, with a total of 2304 units. The signal of each unit in the receiving unit is output separately. The units are bonded to pins, and 2304 receiving signals are independently output through the pins. The receiving sensitivity of the primitive is high, and the phase c...
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Abstract
The invention relates to a preparation method of a high-frequency multi-channel receiving matrix. The method comprises the following steps of: firstly, processing a metal bearing plate, adhering the metal bearing plate to a decoupling material by epoxy, and processing installation spaces required by piezoelectric ceramic particles and a metal outgoing line on the decoupling material after adhesion; secondly, assembling the matrix, adhering positive electrodes of the ceramic particles to the metal bearing plate by high-temperature epoxy, assembling the ceramic particles and the metal bearing plate into the decoupling material, putting a whole into an oven of 80 DEG C, heating and solidifying for 2 hours, parallelly welding negative electrodes of the ceramic particles by using a bare copperwire, and outgoing a negative line; and finally, carrying out integral vulcanization packaging on the matrix, and infusing a polyurethane layer on a surface of the matrix. The method has the advantages that: the receiving sensitivity of elements is high; phase equalization among the elements is good; a receiving frequency range is wide; a receiving region is large; and a manufacturing process is simple and reliable.
Description
technical field [0001] The invention belongs to the field of underwater transducers, and mainly relates to a preparation method of a high-frequency multi-channel receiving array. Background technique [0002] High-frequency multi-channel receiving matrix has not been reported in China. Internationally, the product "choscope-HI" launched by British CodaOctopus Ltd in early 2006, in which the high-frequency multi-channel receiving array is directly divided into 48×48 primitives by a whole piece of PVDF material, and each primitive is a channel Receiving output has high requirements on raw materials and manufacturing processes. At present, we cannot produce PVDF materials that can be divided into 2304 channels in our country. The advantage of the basic array is that it is easy to manufacture, but the disadvantage is that the PVDF material is difficult to manufacture, the sensitivity is low, and problems such as side shift and deformation are prone to occur during the formation...
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IPC IPC(8): H01L41/24H10N30/01H10N30/02H10N30/03
Inventor 唐义政钟琴琴唐军仲林建董铭锋
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP