CN112965050A - Medium-high frequency broadband multi-directional transmitting array implementation method - Google Patents
Medium-high frequency broadband multi-directional transmitting array implementation method Download PDFInfo
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- CN112965050A CN112965050A CN202110146617.4A CN202110146617A CN112965050A CN 112965050 A CN112965050 A CN 112965050A CN 202110146617 A CN202110146617 A CN 202110146617A CN 112965050 A CN112965050 A CN 112965050A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 61
- 239000002245 particle Substances 0.000 claims abstract description 53
- 239000002356 single layer Substances 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 28
- 238000003491 array Methods 0.000 claims abstract description 18
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000007799 cork Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52079—Constructional features
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses a method for realizing a medium-high frequency broadband multi-directional transmitting array, which comprises the following steps: selecting a particle type matching layer transducer as a transmitting transducer array element, and selecting the height of piezoelectric ceramic particles according to the working central frequency of equipment and the longitudinal sound velocity of the piezoelectric ceramic particles; determining the length and width of the piezoelectric ceramic particles and the number of the particles; respectively connecting all the positive electrodes and the negative electrodes of the piezoelectric ceramic particles of the particle type matching layer transducer in parallel; 4 particle type matching layer transducers formed according to the steps 1-3 are manufactured, and a single-layer transducer sub-array is formed; 4 single-layer transducer sub-arrays obtained according to the step 4 are manufactured and form transducer sub-arrays positioned on the same axis, wherein the rotation angle of the single-layer transducer sub-arrays between every two adjacent single-layer transducer sub-arrays is 22.5 degrees; and finally, pouring a layer of polyurethane rubber on the outer side and the upper surface of the transducer subarray for watertight sealing, thereby obtaining the medium-high frequency broadband multi-directional transmitting array.
Description
Technical Field
The invention belongs to the technical field of transducer matrixes, and particularly relates to a medium-high frequency broadband multi-directional transmitting matrix formed by a plurality of medium-high frequency broadband transducers, which realizes the function of multi-directional sound wave transmission.
Technical Field
The wave is the only energy form capable of being remotely transmitted in water, and the utilization of the sound wave as an information carrier is the best mode for realizing underwater communication at present. The sonar transducer is used as a device for transmitting and receiving sound waves, is widely applied to ocean detection and underwater communication, and becomes main equipment for acquiring underwater information transmission.
The transducer array is an array formed by combining a plurality of transducers according to a certain geometric orientation, and the single transducers forming the transducer array are called array elements. The transducer array forms different space directivities by adjusting and controlling the combination of different array elements so as to cover any space direction, and realizes the communication positioning of any target.
The transmitting transducer used in the traditional underwater acoustic communication generally adopts the mode of transmitting sound waves in a semi-infinite space for communication, and the communication mode has the defect that when the number of communication targets is large, mutual interference is easily caused and the communication efficiency between the targets is influenced because the sound signals transmitted by the transducer do not have spatial directivity.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a method for realizing a medium-high frequency broadband multi-directional transmitting array, which can realize 360-degree full-directional transmission on a horizontal plane, can realize multi-directional transmission of sound waves according to requirements and effectively improve the multi-target communication efficiency.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for realizing a medium-high frequency broadband multi-directional transmitting array comprises the following steps:
step 1: selecting a particle type matching layer transducer as a transmitting transducer array element, and selecting the height of piezoelectric ceramic particles according to the working central frequency of equipment and the longitudinal sound velocity of the piezoelectric ceramic particles;
step 2: determining the length and width of the piezoelectric ceramic particles and the number of the particles;
and step 3: respectively connecting all the positive electrodes and the negative electrodes of the piezoelectric ceramic particles of the particle type matching layer transducer in parallel;
and 4, step 4: 4 particle type matching layer transducers formed according to the steps 1-3 are manufactured, and a single-layer transducer sub-array is formed;
and 5: 4 single-layer transducer sub-arrays obtained according to the step 4 are manufactured and form transducer sub-arrays positioned on the same axis, wherein the rotation angle of the single-layer transducer sub-arrays between every two adjacent single-layer transducer sub-arrays is 22.5 degrees;
step 6: and finally, pouring a layer of polyurethane rubber on the outer side and the upper surface of the transducer subarray for watertight sealing, thereby obtaining the medium-high frequency broadband multi-directional transmitting array.
It should be noted that the height of the piezoelectric ceramic particles in step 2 is more than 2 times of the maximum dimension of the length and width.
It should be noted that the duty ratio of the ceramic particles is about 50% when the working bandwidth of the particle-type matching layer transducer reaches an octave.
It should be further noted that, the step 4 further includes: processing a plurality of square round hole positioning pieces; the piezoelectric ceramic end face of each particle type matching layer transducer faces inwards, the radiation end face faces outwards, and the particle type matching layer transducers are sequentially fixed on different side faces of the square round hole positioning piece from top to bottom; and then triangular positioning pieces are assembled on the left side and the right side of the particle type matching layer transducer for positioning, so that a single-layer transducer subarray capable of respectively transmitting sound waves to 4 different directions on a horizontal plane is completed.
It should be further noted that, the step 5 further includes: 4 array elements are sequentially arranged into 4 layers from top to bottom; and taking the array element at the top layer as a reference, and sequentially rotating the sub-array of the single-layer transducer at the lower layer by 22.5 degrees along the anticlockwise direction relative to the sub-array of the single-layer transducer at the upper layer, namely finishing the sub-array of the transducer with the rotation angle of 22.5 degrees between the sub-arrays of the single-layer transducers at each layer.
As a preferable technical scheme, the single-layer transducer subarrays are connected through square round hole positioning pieces.
As a preferable technical scheme, decoupling cork pads are arranged between the single-layer transducer subarrays of each layer.
It should be noted that the horizontal beam opening angle of each particle-type matching layer transducer in step 5 is 22.5 °.
The invention has the beneficial effects that:
1. through the combination of all 16 transducers pointing to different directions, the medium-high frequency horizontal 360-degree omnidirectional emission can be realized, and the connectivity between targets is ensured.
2. Through the combination of a plurality of transducers which point to different directions, the multi-directional transmission of medium-high frequency level can be conveniently realized, and the communication efficiency among multiple targets is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of an array element, i.e., a granular matching layer transducer, of a medium-high frequency broadband multi-directional transmitting array implementation method according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a single-layer transducer subarray constructed based on the grain-type matching layer transducer assembly shown in FIG. 1;
FIG. 3 is a schematic diagram of a medium-high frequency broadband multi-directional transmitting array structure based on the single-layer transducer subarray in FIG. 2;
fig. 4 is a schematic diagram of the medium-high frequency broadband multi-directional transmitting array based on fig. 3 after encapsulation is completed.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
The invention relates to a method for realizing a medium-high frequency broadband multi-directional transmitting array, which comprises the following steps:
step 1: selecting a particle type matching layer transducer as a transmitting transducer array element, and selecting the height of piezoelectric ceramic particles according to the working central frequency of equipment and the longitudinal sound velocity of the piezoelectric ceramic particles;
step 2: determining the length and width of the piezoelectric ceramic particles and the number of the particles;
and step 3: respectively connecting all the positive electrodes and the negative electrodes of the piezoelectric ceramic particles of the particle type matching layer transducer in parallel;
and 4, step 4: 4 particle type matching layer transducers formed according to the steps 1-3 are manufactured, and a single-layer transducer sub-array is formed;
and 5: 4 single-layer transducer sub-arrays obtained according to the step 4 are manufactured and form transducer sub-arrays positioned on the same axis, wherein the rotation angle of the single-layer transducer sub-arrays between every two adjacent single-layer transducer sub-arrays is 22.5 degrees;
step 6: and finally, pouring a layer of polyurethane rubber on the outer side and the upper surface of the transducer subarray for watertight sealing, thereby obtaining the medium-high frequency broadband multi-directional transmitting array.
Further, the height of the piezoelectric ceramic particles in the present invention is 2 times or more the largest dimension of the length and width thereof.
Further, when the working bandwidth of the particle type matching layer transducer reaches an octave, the duty ratio of the ceramic particles is about 50%.
It should be further noted that, step 4 of the present invention further includes: processing a plurality of square round hole positioning pieces; the piezoelectric ceramic end face of each particle type matching layer transducer faces inwards, the radiation end face faces outwards, and the particle type matching layer transducers are sequentially fixed on different side faces of the square round hole positioning piece from top to bottom; and then triangular positioning pieces are assembled on the left side and the right side of the particle type matching layer transducer for positioning, so that a single-layer transducer subarray capable of respectively transmitting sound waves to 4 different directions on a horizontal plane is completed.
It should be further noted that step 5 of the present invention further includes: 4 array elements are sequentially arranged into 4 layers from top to bottom; and taking the array element at the top layer as a reference, and sequentially rotating the sub-array of the single-layer transducer at the lower layer by 22.5 degrees along the anticlockwise direction relative to the sub-array of the single-layer transducer at the upper layer, namely finishing the sub-array of the transducer with the rotation angle of 22.5 degrees between the sub-arrays of the single-layer transducers at each layer.
As a preferable technical scheme, the single-layer transducer subarrays are connected through square round hole positioning pieces.
As a preferable technical scheme, decoupling cork pads are arranged between the single-layer transducer subarrays of each layer.
It should be noted that the horizontal beam opening angle of each particle-type matching layer transducer in step 5 in this embodiment is 22.5 °.
Examples
As shown in fig. 1, the single particle type matching layer transducer in this embodiment uses 28 lead zirconate titanate (PZT-4) piezoelectric ceramic particles 1, and each piezoelectric ceramic particle 1 has a length, width, and height dimension of 4.5mm × 4.5mm × 27 mm. The matching layer 2 is made of epoxy resin materials, the length, width and height of the matching layer 2 are 46.5mm multiplied by 24mm multiplied by 7.4mm, and the water tight layer is made of polyurethane rubber.
As shown in fig. 2, the single-layer transducer sub-array of the present embodiment employs a total of 4 particle-type matching layer transducers 3. The triangular positioning piece 4 on the periphery and the square round hole positioning piece 5 in the center can be made of hard foam, the length, width and height of the outer side of the square round hole positioning piece 5 are 46.5mm multiplied by 24mm, the radius of the inner round hole is 15mm, and the height of the triangular positioning piece 4 is 24 mm.
As shown in fig. 3, in this embodiment, 4 single-layer transducer subarrays 6 each having 4 particle-type matching layer transducers are used, a transducer array is formed by 16 particle-type matching layer transducers in total, decoupling cork pads 7 are inserted between layers for vibration isolation, and a pedestal 8 is made of hard aluminum and has a diameter of 130 mm.
As shown in fig. 4, the potting layer is made of polyurethane rubber, and the height of the array is about 100mm after potting is completed, so that the transducer subarray 9 of the present invention is obtained.
Various modifications may be made by those skilled in the art based on the above teachings and concepts, and all such modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A method for realizing a medium-high frequency broadband multi-directional transmitting array is characterized by comprising the following steps:
step 1: selecting a particle type matching layer transducer as a transmitting transducer array element, and selecting the height of piezoelectric ceramic particles according to the working central frequency of equipment and the longitudinal sound velocity of the piezoelectric ceramic particles;
step 2: determining the length and width of the piezoelectric ceramic particles and the number of the particles;
and step 3: respectively connecting all the positive electrodes and the negative electrodes of the piezoelectric ceramic particles of the particle type matching layer transducer in parallel;
and 4, step 4: 4 particle type matching layer transducers formed according to the steps 1-3 are manufactured, and a single-layer transducer sub-array is formed;
and 5: 4 single-layer transducer sub-arrays obtained according to the step 4 are manufactured and form transducer sub-arrays positioned on the same axis, wherein the rotation angle of the single-layer transducer sub-arrays between every two adjacent single-layer transducer sub-arrays is 22.5 degrees;
step 6: and finally, pouring a layer of polyurethane rubber on the outer side and the upper surface of the transducer subarray for watertight sealing, thereby obtaining the medium-high frequency broadband multi-directional transmitting array.
2. The method for realizing a medium-high frequency broadband multi-directional transmitting matrix according to claim 1, wherein the height of the piezoelectric ceramic particles of the step 2 is more than 2 times of the maximum size of the length and the width of the piezoelectric ceramic particles.
3. The method for realizing the medium-high frequency broadband multi-directional transmitting array according to claim 1, wherein the duty ratio of the ceramic particles is about 50% when the working bandwidth of the particle type matching layer transducer reaches an octave.
4. The method for implementing a medium-high frequency broadband multi-directional transmitting matrix according to claim 1, wherein the step 4 further comprises: processing a plurality of square round hole positioning pieces; the piezoelectric ceramic end face of each particle type matching layer transducer faces inwards, the radiation end face faces outwards, and the particle type matching layer transducers are sequentially fixed on different side faces of the square round hole positioning piece from top to bottom; and then triangular positioning pieces are assembled on the left side and the right side of the particle type matching layer transducer for positioning, so that a single-layer transducer subarray capable of respectively transmitting sound waves to 4 different directions on a horizontal plane is completed.
5. The method for implementing a medium-high frequency broadband multi-directional transmitting matrix according to claim 1, wherein the step 5 further comprises: 4 single-layer transducer subarrays are sequentially arranged into 4 layers from top to bottom; and taking the top layer single-layer transducer subarray as a reference, and sequentially rotating the lower layer single-layer transducer subarray by 22.5 degrees along the anticlockwise direction relative to the upper layer single-layer transducer subarray, namely completing the transducer subarray with the rotation angle of 22.5 degrees among the single-layer transducer subarrays of each layer.
6. The method for realizing the medium-high frequency broadband multi-directional transmitting array according to claim 5, wherein each layer of the single-layer transducer subarrays are connected through square round hole positioning pieces.
7. The medium-high frequency broadband multi-directional transmitting array implementation method according to claim 5, wherein decoupling cork pads are arranged between each layer of the single-layer transducer subarrays.
8. The medium-high frequency broadband multi-directional transmitting array implementation method according to claim 1 or 5, wherein the horizontal beam opening angle of each particle-type matching layer transducer in the step 5 is 22.5 °.
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