CN219573257U - Strain vector hydrophone probe and sonar equipment - Google Patents
Strain vector hydrophone probe and sonar equipment Download PDFInfo
- Publication number
- CN219573257U CN219573257U CN202320346602.7U CN202320346602U CN219573257U CN 219573257 U CN219573257 U CN 219573257U CN 202320346602 U CN202320346602 U CN 202320346602U CN 219573257 U CN219573257 U CN 219573257U
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- vector hydrophone
- circuit board
- conditioning circuit
- hydrophone probe
- strain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model relates to the technical fields of underwater target detection, identification, positioning navigation and communication, in particular to a strain vector hydrophone probe and sonar equipment, wherein the probe comprises a shell, a conditioning circuit board and a detection assembly, and the conditioning circuit board and the detection assembly are arranged in the shell; the shell comprises an upper cover and a lower cover, the conditioning circuit board is connected with the upper cover, and the detection assembly is connected with the lower cover; the conditioning circuit board also comprises a watertight cable, one end of the watertight cable penetrates out of the upper cover and is positioned at the outer side of the shell; the detection assembly comprises a frame, a cross beam, a swing rod and a sensitive chip. The utility model provides a strain type vector hydrophone probe and sonar equipment, wherein the low-frequency working range of the strain type vector hydrophone probe is 10Hz-1500Hz, the average sound pressure sensitivity in the working range is about-200 dB, and compared with the existing hydrophone, the sound pressure sensitivity is effectively improved in the frequency band of the low-frequency working range.
Description
Technical Field
The utility model relates to the technical fields of underwater target detection, identification, positioning navigation and communication, in particular to a strain vector hydrophone probe and sonar equipment.
Background
With the increasing demand of military and ocean resource development, people begin to pay more attention to research and application of underwater target detection, identification, positioning navigation, communication and other technologies, and in seawater, electromagnetic waves with wavelengths and short waves have poor conduction capability, and even radio waves with the magnitude of kilometers penetrate the surface of the ocean. At present, only sound waves can be transmitted in water for a long distance, and people mainly apply the underwater sound technology in marine activities.
The research on scalar and vector expression characteristics and change rules of the underwater sound field is carried out by taking the shallow sea waveguide sound field environment as a research background.
The underwater acoustic transducer (i.e. hydrophone) is known as the forefront of sonar equipment. The environment in the ocean is more complex than that in the land and the air, and the sound pressure sensitivity of the existing vector hydrophone in a low-frequency working range is lower. For example, the working bandwidth of the existing co-vibrating column type two-dimensional vector hydrophone is 10Hz-2kHz, the sound pressure sensitivity is-185.5 dB at 1kHz, the average sound pressure sensitivity of the measuring working frequency band is-159.7 dB, and the co-vibrating column type two-dimensional vector hydrophone is easy to be interfered by the outside during subsequent electric signal processing.
Therefore, how to improve the sound pressure sensitivity of the hydrophone in the low-frequency working range is a technical problem to be solved.
Disclosure of Invention
In order to solve at least the technical problems in the prior art, the utility model provides a strain vector hydrophone probe and sonar equipment.
The utility model provides a strain vector hydrophone probe which comprises a shell, a conditioning circuit board and a detection assembly, wherein the conditioning circuit board and the detection assembly are arranged in the shell; the shell comprises an upper cover and a lower cover, the conditioning circuit board is connected with the upper cover, and the detection component is connected with the lower cover; the conditioning circuit board further comprises a watertight cable, and one end of the watertight cable penetrates out of the upper cover and is positioned on the outer side of the shell; the detection assembly comprises a frame, a cross beam, a swinging rod and a sensitive chip; the frame is square, the frame with lower cover fixed connection, the cross roof beam includes four deformation roof beams, the tip of deformation roof beam with the inboard center on one limit of frame is connected, and the center of cross roof beam with the center coincidence of frame, every all be equipped with on the deformation roof beam sensitive chip, sensitive chip with conditioning circuit board connects, the pendulum rod is located cross Liang Yuanli one side of upper cover, and the pendulum rod with the center vertical connection of cross roof beam.
In some embodiments, the lower cover comprises a first accommodating groove, the frame is connected with the end part of the first accommodating groove, and the swing rod is positioned in the first accommodating groove; the four corners of the frame are respectively provided with a mounting hole, the end part of the first accommodating groove is provided with a thread groove which is correspondingly arranged with the mounting holes, and the mounting holes are connected with the thread groove through screws.
In some embodiments, the deformation beam comprises a wide portion and a narrow portion, two ends of the wide portion are respectively connected with the narrow portion, the thickness of the wide portion is larger than that of the narrow portion, and the sensitive chip is arranged on the surface of the wide portion.
In some embodiments, the upper cover comprises a second accommodating groove, an annular boss is arranged at the bottom of the second accommodating groove, and the conditioning circuit board is arranged in the second accommodating groove and connected with the annular boss; one end of the watertight cable penetrates out of the side wall of the second accommodating groove, and a sealing structure is arranged at the penetrating-out part of the watertight cable and the second accommodating groove.
In some embodiments, an end of the second receiving groove is provided with an extension, and an outer wall of the end of the first receiving groove is provided with a recess; the inner wall of the extension part is in threaded connection with the outer wall of the concave part, and a sealing ring is arranged between the extension part and the concave part.
In some embodiments, the inner wall of the extension and the outer wall of the recess are each stepped; at least one step of step threaded connection is arranged between the extension part and the concave part, and at least one step of step is provided with the sealing ring.
In some embodiments, the end face of the upper cover and/or the end face of the lower cover are provided with test screws for forming test mounting locations for the hydrophone probe.
In some embodiments, the frame, the cross beam, and the swing link are an integral structure.
In some embodiments, the wide portion has a thickness of 0.5 mm to 1.5 mm and a width of 2.5 mm to 3.5 mm, and the narrow portion has a thickness of 0.25 mm to 0.75 mm and a width of 1 mm to 2 mm; and/or the distance between one side of the center of the cross beam and the center of the cross beam is 0.5 mm to 1.5 mm.
In another aspect, the utility model provides sonar equipment comprising the strain-type vector hydrophone probe.
The utility model provides a strain type vector hydrophone probe and sonar equipment, when in use, the hydrophone probe is placed at the water bottom, when sound waves generated by a sound field are transmitted to a hydrophone through an aqueous medium, a swing rod of a cross beam swings, so that a sensitive chip on the deformation beam deforms along with the deformation beam to generate an electric signal, after filtering and amplifying by a conditioning circuit, a standard signal is transmitted through a watertight cable, the low-frequency working range of the strain type vector hydrophone probe is 10Hz-1500Hz, the average sound pressure sensitivity in the working range is about-200 dB, and compared with the traditional hydrophone, the sound pressure sensitivity is effectively improved in a frequency band in the low-frequency working range.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present utility model are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
FIG. 1 is a cross-sectional view of a strain-gauge vector hydrophone probe provided by an embodiment of the utility model;
FIG. 2 is a top view of the lower cap of the strain-gauge vector hydrophone probe provided by embodiments of the present utility model;
FIG. 3 is a top view of a sensing assembly in a strain-gauge vector hydrophone probe provided by an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a sensing assembly in a strain gauge vector hydrophone probe provided by an embodiment of the utility model.
In the figure:
1: an upper cover; 2: conditioning a circuit board; 3: a screw; 4: testing a screw; 5: a lower cover; 6: a seal ring; 7: watertight cable; 8: a sensitive chip; 9: a detection assembly;
91: a frame; 92: a deformation beam; 93: swing rod; 94: a wide portion; 95: a narrow portion.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions according to the embodiments of the present utility model will be clearly described in the following with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in FIG. 1, the utility model provides a strain vector hydrophone probe, which comprises a shell, a conditioning circuit board 3 and a detection assembly 9, wherein the conditioning circuit board 3 and the detection assembly 9 are arranged in the shell; the shell comprises an upper cover 1 and a lower cover 5, the conditioning circuit board 3 is connected with the upper cover 1, and the detection assembly 9 is connected with the lower cover 5. When the strain vector hydrophone probe is used, sound waves generated by a sound field are acquired through the detection assembly 9 on the lower cover 5 and converted into electric signals, and then the electric signals are output through the conditioning circuit board 3.
The structure, connection relation and use method of each component of the strain vector hydrophone probe are described below with reference to the accompanying drawings.
With continued reference to fig. 1, the conditioning circuit board 3 further includes a watertight cable 7, and one end of the watertight cable 7 penetrates through the upper cover 1 and is located outside the casing. The water-tight cable 7 is connected with equipment outside the hydrophone probe, so that collected signals can be transmitted.
For example, the upper cover 1 includes a second accommodating groove, the bottom of which is provided with an annular boss, and the conditioning circuit board 3 is disposed in the second accommodating groove and connected with the annular boss. For example, the end face of the conditioning circuit board 3 is flush with the notch of the second accommodating groove, that is, the conditioning circuit board 3 is entirely located in the second accommodating groove, so that the conditioning circuit board 3 can be protected. One end of the watertight cable 7 penetrates out of the side wall of the second accommodating groove, and the penetrating-out parts of the watertight cable 7 and the second accommodating groove are provided with sealing structures. For example, the watertight cable 7 is fixedly sealed with the penetrating portion of the second accommodation groove by glue to prevent external water from entering the housing.
As shown in fig. 1 to 4, the detection assembly 9 includes a frame 91, a cross beam, a swing rod 93 and a sensitive chip 8; the frame 91 is the square, frame 91 and lower cover 5 fixed connection, and the cross roof beam includes four deformation roof beams 92, and the tip of deformation roof beam 92 is connected with the inboard center on one side of frame 91 to the center of cross roof beam coincides with the center of frame 91, all is equipped with sensitive chip 8 on every deformation roof beam 92, and sensitive chip 8 is connected with the conditioning circuit board 3, and pendulum rod 93 locates the cross roof beam and keeps away from one side of upper cover 1, and pendulum rod 93 is connected with the center of cross roof beam perpendicularly.
When the detection assembly 9 is placed in a use environment, the detection assembly is subjected to periodic pressure in a sound field, the swing rod 93 swings, the swing rod 93 drives the connected deformation beam 92 to deform, meanwhile, the sensitive chip 8 on the deformation beam 92 deforms along with deformation, and then an electric signal is generated, the conditioning circuit board 2 receives the electric signal, and after filtering and amplifying of the conditioning circuit, a standard signal is transmitted by the watertight cable.
For example, the sensitive chip 8 is a chip commonly used in existing hydrophone probes. In the embodiment of the utility model, the type and the model of the sensitive chip 8 are limited.
For example, the lower cover 5 includes a first receiving groove, the frame 91 is connected to an end of the first receiving groove, and the swing link 93 is located in the first receiving groove; four corners of the frame 91 are respectively provided with a mounting hole, the end part of the first accommodating groove is provided with a thread groove which is correspondingly arranged with the mounting hole, and the mounting holes are connected with the thread groove through screws 3. The frame 91 is the square, adopts hollow setting mode, can alleviate the whole weight of hydrophone to, adopt the mode that the frame 91 four corners is connected, can make detection component 9 installation stable, realize more accurate detection.
In the embodiment of the utility model, the deformation beam 92 includes a wide portion 94 and a narrow portion 95, two ends of the wide portion 94 are respectively connected with the narrow portion 95, the thickness of the wide portion 94 is greater than that of the narrow portion 95, and the sensitive chip 8 is arranged on the surface of the wide portion 94. For example, the thickness of the wide portion 94 is greater than the thickness of the narrow portion 95. With this structure, the measurement accuracy of the deformed beam 92 can be improved. For example, the sensitive die 8 is located on one side of the center of the cross beam closer to the center of the cross beam.
For example, the wide portion 94 has a thickness of 0.5 mm to 1.5 mm, a width of 2.5 mm to 3.5 mm, and the narrow portion 95 has a thickness of 0.25 mm to 0.75 mm, and a width of 1 mm to 2 mm. Preferably, the wide portion 94 has a thickness of 1 mm and a width of 3 mm, and the narrow portion 95 has a thickness of 0.5 mm and a width of 1.5 mm.
For example, the distance of the sensitive chip 8 on the side of the center of the cross beam from the center of the cross beam is 0.5 mm to 1.5 mm; preferably, the distance of the sensitive chip 8 from the centre of the cross beam is 1 mm, for example, on the side of the centre of the cross beam.
With continued reference to fig. 1, in the embodiment of the present utility model, an extension portion is provided at an end portion of the second accommodating groove, and a recess portion is provided on an outer wall of an end portion of the first accommodating groove; the inner wall of the extension part is in threaded connection with the outer wall of the concave part, and a sealing ring 6 is arranged between the extension part and the concave part.
For example, the inner wall of the extension portion and the outer wall of the recess portion are respectively stepped; at least one step of step threaded connection is arranged between the extension part and the concave part, and at least one step of step is provided with a sealing ring 6. Correspondingly, a multi-step structure is also arranged on the upper cover 1, and screw thread and sealing connection can be realized through arranging the multi-step structure, namely, the upper cover 1 and the lower cover 5 are tightly connected.
For example, the frame 91, the cross beam, and the swing lever 93 are integrally formed. By adopting the integrated structure, the detection precision of the detection assembly 9 can be improved, the performance of the detection assembly 9 can be improved, the strength of the detection assembly 9 can be improved by adopting the integrated structure, the service life can be prolonged, and the process is simpler and more efficient in production and manufacture.
With continued reference to fig. 1, the end face of the upper cap 1 and/or the end face of the lower cap 5 are provided with test screws 4 for forming test mounting sites for the hydrophone probe. In use, the sonar equipment is connected with the equipment through the test screw 4, or the test screw 4 is detached to be connected with the sonar equipment. The test screw 4 facilitates quick and stable installation of the hydrophone probe to ensure stability in use.
The utility model also provides sonar equipment, which comprises the strain vector hydrophone probe. The sonar equipment is connected with the hydrophone probe through a test screw 4.
The utility model provides a strain vector hydrophone probe and sonar equipment, when in use, the hydrophone probe is placed at the water bottom, when sound waves generated by a sound field are transmitted to a hydrophone through an aqueous medium, a swing rod 93 of a cross beam swings, so that a sensitive chip 8 on the deformation beam 92 deforms along with the deformation beam 92 to generate an electric signal, after filtering and amplifying by a conditioning circuit, a standard signal is transmitted through a watertight cable, the low-frequency working range of the strain vector hydrophone probe is 10Hz-1500Hz, the average sound pressure sensitivity in the working range is about-200 dB, and compared with the conventional hydrophone, the sound pressure sensitivity is effectively improved in a frequency band of the low-frequency working range.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The strain type vector hydrophone probe is characterized by comprising a shell, a conditioning circuit board (2) and a detection assembly (9), wherein the conditioning circuit board (2) and the detection assembly (9) are arranged in the shell;
the shell comprises an upper cover (1) and a lower cover (5), the conditioning circuit board (2) is connected with the upper cover (1), and the detection assembly (9) is connected with the lower cover (5);
the conditioning circuit board (2) further comprises a watertight cable (7), and one end of the watertight cable (7) penetrates out of the upper cover (1) and is positioned on the outer side of the shell;
the detection assembly (9) comprises a frame (91), a cross beam, a swing rod (93) and a sensitive chip (8); the frame (91) is square, frame (91) with lower cover (5) fixed connection, the cross roof beam includes four deformation roof beams (92), the tip of deformation roof beam (92) with the inboard center on one limit of frame (91) is connected, and the center of cross roof beam with the center coincidence of frame (91), every all be equipped with on deformation roof beam (92) sensitive chip (8), sensitive chip (8) with conditioning circuit board (2) are connected, pendulum rod (93) are located cross Liang Yuanli one side of upper cover (1), and pendulum rod (93) with the center of cross roof beam is connected perpendicularly.
2. The strain-type vector hydrophone probe of claim 1, wherein the lower cap (5) comprises a first receiving groove, the rim (91) being connected to an end of the first receiving groove, the pendulum bar (93) being located in the first receiving groove;
four corners of the frame (91) are respectively provided with mounting holes, the end part of the first accommodating groove is provided with a thread groove which is correspondingly arranged with the mounting holes, and the mounting holes are connected with the thread groove through screws (3).
3. The strain gauge vector hydrophone probe of claim 2, wherein the deformation beam (92) comprises a wide portion (94) and a narrow portion (95), the narrow portion (95) is connected to two ends of the wide portion (94), the thickness of the wide portion (94) is larger than that of the narrow portion (95), and the sensitive chip (8) is arranged on the surface of the wide portion (94).
4. A strain gauge vector hydrophone probe as recited in claim 3, characterised in that the upper cover (1) comprises a second receiving groove, the bottom of the second receiving groove is provided with an annular boss, and the conditioning circuit board (2) is arranged in the second receiving groove and connected with the annular boss;
one end of the watertight cable (7) penetrates out of the side wall of the second accommodating groove, and a sealing structure is arranged at the penetrating-out part of the watertight cable (7) and the second accommodating groove.
5. The strain gauge vector hydrophone probe of claim 4, wherein the end of the second receiving groove has an extension, and the outer wall of the end of the first receiving groove has a recess;
the inner wall of the extension part is in threaded connection with the outer wall of the concave part, and a sealing ring (6) is arranged between the extension part and the concave part.
6. The strain gauge vector hydrophone probe of claim 5, wherein the inner wall of the extension and the outer wall of the recess are each stepped;
at least one step of step threaded connection is arranged between the extension part and the concave part, and at least one step of step is provided with the sealing ring (6).
7. Strain vector hydrophone probe according to any of the claims 1 to 6, characterized in that the end face of the upper cap (1) and/or the end face of the lower cap (5) is provided with test screws (4) for forming test mounting sites for the hydrophone probe.
8. The strain vector hydrophone probe of any one of claims 1-6, wherein the frame (91), the cross beam and the pendulum rod (93) are of a unitary construction.
9. A strain gauge vector hydrophone probe as recited in claim 3, wherein the wide section (94) has a thickness of 0.5 mm to 1.5 mm, a width of 2.5 mm to 3.5 mm, and the narrow section (95) has a thickness of 0.25 mm to 0.75 mm, and a width of 1 mm to 2 mm; and/or
The distance between one side of the center of the cross beam and the center of the cross beam is 0.5 mm to 1.5 mm.
10. A sonar device comprising a strain vector hydrophone probe as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320346602.7U CN219573257U (en) | 2023-02-20 | 2023-02-20 | Strain vector hydrophone probe and sonar equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320346602.7U CN219573257U (en) | 2023-02-20 | 2023-02-20 | Strain vector hydrophone probe and sonar equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219573257U true CN219573257U (en) | 2023-08-22 |
Family
ID=87656514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320346602.7U Active CN219573257U (en) | 2023-02-20 | 2023-02-20 | Strain vector hydrophone probe and sonar equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219573257U (en) |
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2023
- 2023-02-20 CN CN202320346602.7U patent/CN219573257U/en active Active
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