Resonant bionic cilium vector hydrophone based on quartz tuning fork and underwater acoustic system

Abstract

The invention provides a resonant bionic cilia vector hydrophone based on a quartz tuning fork and an underwater acoustic system, and relates to the technical field of micro-mechanical electronics. A vibration detection mechanism in the hydrophone comprises two quartz tuning forks located in a first axial direction and two quartz tuning forks located in a second axial direction, the first axial direction is perpendicular to the second axial direction, one end of each quartz tuning fork is fixed, and the other end of each quartz tuning fork is connected with a vibration acquisition mechanism; and the vibration acquisition mechanism is connected with the quartz tuning forks and is used for driving the two quartz tuning forks in the same axial direction to generate symmetrical frequency deviation under the action of sound waves. According to the embodiment of the invention, the excellent frequency stability and strain sensitivity of the double-end fixed tuning fork can be utilized to realize efficient conversion of sound signals and generation of corresponding electric signals, digital signal output can be conveniently realized, high-sensitivity detection of the sound signals can be effectively realized, the influence of common-mode signals can be inhibited, the anti-interference performance is good, and the detection precision is high. And the underwater sound detection effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of micro-mechanical electronic technology, in particular, the present application relates to a quartz tuning fork based resonant type biomimetic cilium vector hydrophone and underwater acoustic system. BACKGROUND

[0002] In the field of underwater acoustics, sensors are usually referred to as transducers, which mainly include scalar sensors and vector sensors, also known as scalar hydrophones and vector hydrophones. In sound field measurement, the traditional method is to use scalar hydrophones (sound pressure hydrophones), but scalar can only measure scalar parameters in the sound field. The biomimetic cilium vector hydrophone can measure vector parameters in the sound field, and its application helps to obtain vector information of the sound field, which is of great significance for the functional expansion of sonar equipment. Therefore, the biomimetic cilium vector hydrophone is widely used in various underwater acoustic systems to achieve the purpose of ocean monitoring and underwater target detection.

[0003] However, with the rapid development of ocean exploration technology, modern underwater acoustic systems have higher requirements for biomimetic cilium vector hydrophones: high sensitivity detection of weak acoustic signals in a complex ocean noise background. However, the traditional biomimetic cilium vector hydrophone mainly uses a piezoresistive sensing scheme, but the piezoresistive sensitivity is insufficient, which makes it difficult to effectively meet the requirements of high sensitivity detection and digital signal output. SUMMARY

[0004] The embodiment of the present application provides a quartz tuning fork based resonant type biomimetic cilium vector hydrophone and underwater acoustic system, which can solve the problem of insufficient sensitivity and difficulty in realizing digital signal output of the existing biomimetic vector hydrophone. In order to achieve this purpose, the embodiment of the present application provides the following schemes.

[0005] According to an aspect of the embodiment of the present application, a quartz tuning fork based resonant type biomimetic cilium vector hydrophone is provided, comprising: a vibration collection mechanism and a vibration detection mechanism provided with a quartz tuning fork, The vibration detection mechanism includes two quartz tuning forks in the first axial direction and two quartz tuning forks in the second axial direction, the first axial direction is perpendicular to the second axial direction, one end of each quartz tuning fork is fixed, and the other end is connected with the vibration collection mechanism, the quartz tuning fork is used to produce resonance under the action of excitation, and the excitation includes circuit excitation; The vibration collection mechanism is connected with the quartz tuning fork, and the vibration collection mechanism is used to drive the two quartz tuning forks in the same axial direction to produce symmetrical frequency shift when affected by sound waves.

[0006] In a possible implementation, the vibration collecting mechanism comprises a vibration pickup cilium and a first connecting block, the vibration pickup cilium is located on one side of a plane corresponding to the first axial direction and the second axial direction, the first connecting block is located in the plane, one end of the vibration pickup cilium is in transmission connection with the first connecting block, and a side surface of the first connecting block is connected with the quartz tuning fork.

[0007] In a possible implementation, the vibration pickup cilium is in a cylindrical structure and is perpendicular to the plane, an area of the first connecting block is greater than an area of a bottom end of the vibration pickup cilium, and a central axis of the first connecting block is coincident with a central axis of the vibration pickup cilium.

[0008] In a possible implementation, the water sound system further comprises a frame-shaped base, one end of the quartz tuning fork away from the first connecting block is connected with the frame-shaped base close to a side of the first connecting block.

[0009] In a possible implementation, the frame-shaped base, the quartz tuning fork and the first connecting block are processed and shaped from a same quartz wafer.

[0010] In a possible implementation, the water sound system further comprises a cover plate and a base, the cover plate is fixed on one side of the frame-shaped base, the vibration pickup cilium is connected with the first connecting block through the cover plate; the base is fixed on a side of the frame-shaped base away from the cover plate, and the cover plate, the frame-shaped base and the base form a vacuum sealed cavity, and the quartz tuning fork is suspended in the vacuum sealed cavity.

[0011] In a possible implementation, the cover plate and the base are of the same structure and size.

[0012] In a possible implementation, the base and the cover plate each comprise a second connecting block and a groove, a groove edge width of the groove corresponds to a width of the frame-shaped base; the second connecting block is located in a middle part of the groove, a height of the second connecting block is consistent with a height of the groove edge, and the second connecting block is opposite to the first connecting block to fit the first connecting block.

[0013] In a possible implementation, the second connecting block in the cover plate is opposite to and connected with the first connecting block, and a central axis of the second connecting block in the cover plate is coincident with a central axis of the vibration pickup cilium.

[0014] According to an aspect of an embodiment of the present application, the embodiment of the present application provides a water sound system, the water sound system comprising an excitation circuit and a resonant type bionic cilium vector hydrophone as described above, the excitation circuit being connected with the resonant type bionic cilium vector hydrophone to detect a sound signal.

[0015] The technical scheme provided by the embodiment of the present application has the beneficial effects that: The quartz tuning fork based resonant type bionic cilium vector hydrophone provided by the present application comprises a vibration collecting mechanism and a vibration detecting mechanism provided with quartz tuning forks, the vibration detecting mechanism comprises two quartz tuning forks located in a first axis and two quartz tuning forks located in a second axis, the first axis is perpendicular to the second axis, and one end of each quartz tuning fork is fixed, and the other end is connected with the vibration collecting mechanism, the quartz tuning forks are used to generate resonance under excitation, and the excitation comprises circuit excitation; the vibration collecting mechanism is connected with the quartz tuning forks, and the vibration collecting mechanism is used to drive the two quartz tuning forks in the same axis to generate symmetrical frequency offset when affected by sound waves. The embodiment of the present application can utilize the excellent frequency stability and strain sensitivity of the double-end fixed tuning fork, realize efficient conversion of sound signals and generation of corresponding electric signals, facilitate digital signal output, effectively realize high-sensitivity detection of sound signals, can inhibit the influence of common-mode signals, has good anti-interference performance, and greatly improves the underwater acoustic detection effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed to be used in the description of the embodiment of the present application will be briefly introduced.

[0017] Figure 1 The structure schematic diagram of the quartz tuning fork based resonant type bionic cilium vector hydrophone provided by the embodiment of the present application is shown in the figure. Figure 2 The structure explosion diagram of the quartz tuning fork based resonant type bionic cilium vector hydrophone provided by the embodiment of the present application is shown in the figure. Figure 3 The working mode schematic diagram of the double-end fixed quartz tuning fork provided by the embodiment of the present application is shown in the figure. Figure 4 The working mode schematic diagram of the resonant type bionic cilium vector hydrophone provided by the embodiment of the present application is shown in the figure. Figure 5 The stress distribution schematic diagram of the resonant type bionic cilium vector hydrophone provided by the embodiment of the present application when the X-axis sound wave acts on the X-axis and the Y-axis is shown in the figure. Figure 6 The structure diagram of the underwater acoustic system provided by the embodiment of the present application is shown in the figure.

[0018] In the drawings: 1, vibration pickup cilium; 2, cover plate; 3, first connecting block; 4, quartz tuning fork; 41, first rod body; 42, second rod body; 43, first fixed block; 44, second fixed block; 45, third fixed block; 46, fourth fixed block; 47, first fixed seat; 48, second fixed seat; 5, frame type base; 6, base; 7, second connecting block; 8, groove body. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions of the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0020] Those skilled in the art can understand that the singular forms "a", "an" and "the" used herein include plural forms unless specifically stated otherwise. It should be further understood that the terms "comprise" and "include" used in the embodiments of the present application mean that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the present technology. It should be understood that when we say that an element is "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or can mean that the element and the other element are connected through an intermediate element. In addition, "connected" or "coupled" used herein can include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" indicates implementation as "A", or implementation as "A", or implementation as "A and B".

[0021] In order to make the purposes, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings.

[0022] The technical solutions of the embodiments of the present application and the technical effects produced by the technical solutions of the present application will be described below through the description of several exemplary embodiments. It should be noted that the following embodiments can be mutually referenced, borrowed or combined, and the same terms, similar features and similar implementation steps in different embodiments will not be described repeatedly.

[0023] The quartz tuning fork based resonant type biomimetic cilium vector hydrophone and underwater acoustic system provided by the present application aims to solve at least one technical problem existing in the prior art.

[0024] Optionally, the quartz tuning fork based resonant type biomimetic cilium vector hydrophone of the present application can be installed in sonar equipment, underwater communication equipment and other equipment that needs to detect underwater acoustic waves. These equipment can effectively detect underwater acoustic waves through the hydrophone of the present application.

[0025] Optionally, the resonant biomimetic ciliary vector hydrophone based on the quartz tuning fork in this application can be a MEMS (Micro-Electro-Mechanical System) sensor, which can effectively reduce the size and weight of the hydrophone and enable digital signal output.

[0026] Optionally, such as Figures 1-5 As shown, the resonant biomimetic ciliary vector hydrophone based on quartz tuning forks of this application includes: a vibration acquisition mechanism and a vibration detection mechanism equipped with quartz tuning forks 4. The vibration detection mechanism includes two quartz tuning forks 4 located along a first axis and two quartz tuning forks 4 located along a second axis. The first axis is perpendicular to the second axis, and one end of each quartz tuning fork 4 is fixed, while the other end is connected to the vibration acquisition mechanism. The quartz tuning forks 4 are used to generate resonance under excitation, which includes circuit excitation. The vibration acquisition mechanism is connected to the quartz tuning forks 4 and is used to drive the two quartz tuning forks 4 along the same axis to generate symmetrical frequency shifts when subjected to sound waves. The interference between the corresponding quartz tuning forks 4 is reduced by the first axis being perpendicular to the second axis.

[0027] Optionally, such as Figure 1 ( Figure 1 (Partial hidden display of the structure of the hydrophone) Figure 2 As shown, the quartz tuning fork 4 can be a double-ended fixed quartz tuning fork 4, which exhibits the inverse piezoelectric effect. The quartz tuning fork 4 can be electrically connected to the excitation circuit. After receiving the electrical signal from the excitation circuit, the quartz tuning fork 4 maintains a resonant state in the plane formed by the first and second axes based on the inverse piezoelectric effect, thereby reducing energy loss and maintaining a high Q value (quality factor). Furthermore, the symmetrical frequency shift generated by the quartz tuning fork 4 can be detected by the excitation circuit, thereby realizing the measurement of underwater sound waves. In particular, when the hydrophone is working, the two quartz tuning forks 4 in the first or second axis are subjected to stresses in opposite directions, thereby producing deformations in opposite directions, thus generating differential-mode amplified signals. This signal generation method can suppress common-mode noise and has advantages such as high resolution, high sensitivity, anti-interference, digital signal output, and batch generation.

[0028] Optionally, such as Figure 3As shown, the quartz tuning fork 4 can include a first rod body 41, a second rod body 42, a first fixed block 43, a second fixed block 44, a third fixed block 45, a fourth fixed block 46, a first fixed seat 47, and a second fixed seat 48. The first end of the first rod body 41 and the first end of the second rod body 42 are connected to the first fixed block 43, and the second end of the first rod body 41 and the second end of the second rod body 42 are connected to the second fixed block 44. One end of the third fixed block 45 is connected to the side of the first fixed block 43 away from the first rod body 41, and the other end of the third fixed block 45 is connected to the first fixed seat 47. One end of the fourth fixed block 46 is connected to the side of the second fixed block 44 away from the first rod body 41, and the other end is connected to the second fixed seat 48. The end of the first fixed seat 47 away from the third fixed block 45 can be connected to the vibration collection mechanism. The end of the second fixed seat 48 away from the fourth fixed block 46 can be fixed to the vibration detection mechanism.

[0029] When the quartz tuning fork 4 is affected by the stress transmitted by the vibration collection mechanism, the first rod body 41 and the second rod body 42 deform.

[0030] Optionally, as shown, Figure 1 the vibration collection mechanism includes a vibration pickup cilium 1 and a first connecting block 3. The vibration pickup cilium 1 is located on one side of the plane corresponding to the first and second axial directions, and the first connecting block 3 is located in the plane. One end of the vibration pickup cilium 1 is in transmission connection with the first connecting block 3, and the side surface of the first connecting block 3 is connected with the quartz tuning fork 4. The vibration pickup cilium 1 can be a resonant type bionic cilium. The vibration pickup cilium 1 collects underwater sound waves and transmits the stress generated by the sound waves to the quartz tuning fork 4.

[0031] Optionally, as shown, Figure 4 the vibration pickup cilium 1 is in a cylindrical structure and is perpendicular to the plane, and the area of the first connecting block 3 is greater than the area of the bottom end of the vibration pickup cilium 1, and the central axis of the first connecting block 3 (which can pass through the center of the area or the center of gravity of the first connecting block 3 and be perpendicular to the first connecting block 3) coincides with the central axis of the vibration pickup cilium 1. By means of the central axis coincidence, it is ensured that the stress can be effectively transmitted from the vibration pickup cilium 1 to the first connecting block 3, and then to the quartz tuning fork 4. The quartz tuning fork 4 is stressed to produce a symmetrical frequency shift (as shown in Figure 4 the quartz tuning fork 4 vibrates in the plane).

[0032] In one embodiment, the first connecting block 3 can be a square structure, and the width of the square structure is the same as the diameter of the vibration pickup cilium 1. The material of the vibration pickup cilium 1 can be epoxy resin and other objects that can be used to collect underwater sound waves and transmit stress.

[0033] Optionally, a frame base 5 is further included, and the end of the quartz tuning fork 4 away from the first connecting block 3 is connected to the side of the frame base 5 close to the first connecting block 3.

[0034] In one embodiment, the frame-shaped base 5 can be a square structure or other shapes (such as rectangular shape, etc.). The frame-shaped base includes four frame edges, each of which is connected with a quartz tuning fork 4.

[0035] Optionally, the frame-shaped base 5, the quartz tuning fork 4 and the first connecting block 3 are processed from the same quartz wafer. During processing, the position of each processing object can be directly determined by a photolithography process, and processing is performed. The frame-shaped base 5, the quartz tuning fork 4 and the first connecting block 3 can be an integrated structure to reduce the need to assemble the three, reducing production difficulty.

[0036] Optionally, the frame-shaped base 5, the quartz tuning fork 4 and the first connecting block 3 can have the same thickness, and the three are located in the same plane, and the quartz tuning fork 4 vibrates in the plane when resonating.

[0037] Optionally, the hydrophone further includes a cover plate 2 and a base 6, the cover plate 2 is fixed on one side of the frame-shaped base 5, and the vibration pickup cilium 1 is connected with the first connecting block 3 through the cover plate 2; the base 6 is fixed on the side of the frame-shaped base 5 away from the cover plate 2, and the cover plate 2, the frame-shaped base 5 and the base 6 form a vacuum sealed cavity, and the quartz tuning fork 4 is suspended in the vacuum sealed cavity. Through the vacuum sealed cavity, the loss generated by the vibration of the quartz tuning fork 4 is reduced, and the Q value is improved.

[0038] Optionally, the cover plate 2 and the base 6 have the same structure and size, wherein the middle part of the cover plate 2 and the base 6 can contact the first connecting block 3.

[0039] Optionally, the base 6 and the cover plate 2 each include a second connecting block 7 and a groove 8, the groove edge width of the groove 8 corresponds to the width of the frame-shaped base 5; the second connecting block 7 is located in the middle of the groove 8, the height of the second connecting block 7 is consistent with the height of the groove edge, and the second connecting block 7 is opposite to the first connecting block 3 to fit the first connecting block 3.

[0040] Optionally, the cover plate 2 and the base 6 have the same shape as the frame-shaped base 5, and the frame-shaped base 5 is fixed between the cover plate 2 and the base 6. The width of the groove edge can be the same as the frame edge of the frame-shaped base 5.

[0041] In one embodiment, the cover plate 2 and the base 6 can be a square structure, and the cover plate 2 and the base 6 can be formed by the same processing technology. Specifically, the cover plate 2 and the base 6 can be processed by single-sided etching of fused quartz.

[0042] Optionally, the second connecting block 7 of the cover plate 2 and the second connecting block 7 of the base 6 form an island structure. Moreover, the first connecting block 3, the second connecting block 7 and the central axis of the vibration pickup fiber 1 coincide, and the structural symmetry of the hydrophone is ensured by the central axis coincidence mode, which effectively reduces the loss of stress transmission and the sensitivity of sound wave detection. The shape of the first connecting block 3 and the second connecting block 7 on one side close to each other can be the same.

[0043] Optionally, the cover plate 2 and the base 6 can be connected with the frame-shaped base 5 by glass paste, thereby realizing vacuum sealed packaging. Alternatively, the cover plate 2 and the base 6 can be vacuum packaged by a process such as eutectic bonding.

[0044] In one embodiment, the cover plate 2 and the base 6 are fixed on both sides of the frame-shaped base 5 to form a vacuum sealed cavity. The four quartz tuning forks 4 in the vacuum sealed cavity form a cross-beam structure. The cross-beam structure is in a resonance state after being energized. When the X-axis sound wave or the Y-axis sound wave acts on the vibration pickup fiber 1, the vibration pickup fiber 1 swings to drive the cross-beam to deform, and the deformation of the cross-beam structure directly modulates the resonance frequency of the QDETF. The QDETFs in the same axial direction are subjected to force reverse strain (when two QDETFs in the same axial direction work, the resonance frequency drift amounts are opposite, one increases and the other decreases), which produces a symmetric frequency shift, suppresses common mode noise while amplifying differential mode signals, and has the advantages of high sensitivity, anti-interference, digital signal output and batch integration. The first axis can be the X-axis, and the second axis can be the Y-axis, as shown in Figure 5 When the X-axis sound wave acts, the quartz tuning fork 4 corresponding to the X-axis is affected by stress and produces a symmetric frequency shift, and the quartz tuning fork 4 corresponding to the Y-axis is not affected by stress and vibrates at a fixed frequency.

[0045] The application based on the resonant type bionic fiber vector hydrophone of the quartz tuning fork includes a vibration collection mechanism and a vibration detection mechanism provided with quartz tuning forks. The vibration detection mechanism includes two quartz tuning forks in a first axis and two quartz tuning forks in a second axis. The first axis is perpendicular to the second axis, and one end of each quartz tuning fork is fixed, and the other end is connected with the vibration collection mechanism. The quartz tuning fork is used to produce resonance under excitation, and the excitation includes circuit excitation. The vibration collection mechanism is connected with the quartz tuning fork, and the vibration collection mechanism is used to drive the two quartz tuning forks in the same axis to produce a symmetric frequency shift when subjected to a sound wave. The application embodiment can utilize the excellent frequency stability and strain sensitivity of the double-end fixed tuning fork to realize efficient conversion of sound signals and generation of corresponding electric signals, facilitate digital signal output, effectively realize high-sensitivity detection of sound signals, and can suppress the influence of common mode signals and has good anti-interference performance, thereby greatly improving the underwater sound detection effect.

[0046] Based on the same inventive concept, the application embodiment provides an underwater sound system, as Figure 6As shown, the underwater acoustic system comprises an excitation circuit and the resonant bionic cilium vector hydrophone as described above, the excitation circuit is connected with the resonant bionic cilium vector hydrophone to detect the sound signal. Wherein, the excitation circuit can supply power to the resonant bionic cilium vector hydrophone to excite the quartz tuning fork to vibrate, and the excitation circuit can also detect the electric signal generated by the quartz tuning fork affected by the stress transmitted by the pick-up cilium, so as to obtain the symmetric frequency offset generated by the two quartz tuning forks in the same axial direction, and then measure the sound signal according to the symmetric frequency offset.

[0047] Those skilled in the art can understand that the steps, measures and schemes in various operations, methods and processes discussed in the present application can be alternated, changed, combined or deleted. Further, other steps, measures and schemes in various operations, methods and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, the steps, measures and schemes in various operations, methods and processes in the related art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0048] In the description of the present application, the directions or position relationships indicated by the words "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the exemplary directions or position relationships shown in the drawings, and are for the convenience of description or simplification of the description of the embodiments of the present application, and are not intended to indicate or imply that the devices or components referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] The terms "first", "second", "third", "fourth", "1", "2" and the like (if any) in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described.

[0050] It should be understood that although each operation step in the flowchart of the embodiments of the present application is indicated by an arrow, the implementation order of the steps is not limited to the order indicated by the arrow. Unless explicitly stated herein, in some implementation scenarios of the embodiments of the present application, the implementation steps in each flowchart can be executed in other orders as required. In addition, part or all of the steps in each flowchart can include multiple sub-steps or multiple stages based on the actual implementation scenario. Part or all of these sub-steps or stages can be executed at the same time, and each of these sub-steps or stages can also be executed at different times. In the scenario where the execution times are different, the execution order of these sub-steps or stages can be flexibly configured as required, and the embodiments of the present application do not limit this.

[0051] The above is only an optional implementation of some implementation scenarios of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, other similar implementation means based on the technical idea of the present application without departing from the technical concept of the present application also belong to the protection scope of the embodiments of the present application.

Claims

1. A resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork, characterized in that, include: Vibration acquisition mechanism and vibration detection mechanism equipped with quartz tuning fork (4), The vibration detection mechanism includes two quartz tuning forks (4) located on a first axis and two quartz tuning forks (4) located on a second axis. The first axis is perpendicular to the second axis and one end of each quartz tuning fork (4) is fixed, while the other end is connected to the vibration acquisition mechanism. The quartz tuning forks (4) are used to generate resonance under excitation. The excitation includes circuit excitation. The vibration acquisition mechanism is connected to the quartz tuning fork (4). When subjected to sound waves, the vibration acquisition mechanism drives the two quartz tuning forks (4) on the same axis to produce symmetrical frequency shifts.

2. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 1, characterized in that, The vibration acquisition mechanism includes a vibration-collecting fiber (1) and a first connecting block (3). The vibration-collecting fiber (1) is located on one side of the plane corresponding to the first axial direction and the second axial direction. The first connecting block (3) is located in the plane. One end of the vibration-collecting fiber (1) is connected to the first connecting block (3) in a transmission manner, and the side of the first connecting block (3) is connected to the quartz tuning fork (4).

3. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 2, characterized in that, The vibration-collecting fiber (1) is a cylindrical structure and is perpendicular to the plane. The area of ​​the first connecting block (3) is larger than the area of ​​the bottom end of the vibration-collecting fiber (1), and the central axis of the first connecting block (3) coincides with the central axis of the vibration-collecting fiber (1).

4. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 2, characterized in that, It also includes a frame base (5), and the end of the quartz tuning fork (4) away from the first connecting block (3) is connected to the side of the frame base (5) close to the first connecting block (3).

5. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 4, characterized in that, The frame base (5), the quartz tuning fork (4), and the first connecting block (3) are all formed from the same quartz wafer.

6. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 4, characterized in that, It also includes a cover plate (2) and a base (6), the cover plate (2) being fixed to one side of the frame base (5), and the vibration-collecting fibers (1) being connected to the first connecting block (3) through the cover plate (2); The base (6) is fixed to the side of the frame base (5) away from the cover plate (2), and the cover plate (2), the frame base (5) and the base (6) form a vacuum sealed cavity, and the quartz tuning fork (4) is suspended in the vacuum sealed cavity.

7. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 6, characterized in that, The cover plate (2) and the base (6) have the same structure and dimensions.

8. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 7, characterized in that, The base (6) and the cover plate (2) both include a second connecting block (7) and a groove (8), the width of the groove edge of the groove (8) corresponds to the width of the frame base (5); The second connecting block (7) is located in the middle of the groove (8). The height of the second connecting block (7) is the same as the height of the groove edge, and the second connecting block (7) is opposite to the first connecting block (3) to fit the first connecting block (3).

9. The resonant biomimetic ciliary vector hydrophone based on a quartz tuning fork according to claim 8, characterized in that, The second connecting block (7) in the cover plate (2) is opposite to and connected to the first connecting block (3), and the central axis of the vibration-collecting fiber (1) coincides with the central axis of the second connecting block (7) in the cover plate (2).

10. An underwater acoustic system, characterized in that, The underwater acoustic system includes an excitation circuit and a resonant biomimetic ciliary vector hydrophone as described in any one of claims 1-9, wherein the excitation circuit is connected to the resonant biomimetic ciliary vector hydrophone to detect sound signals.

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