CN116929538B - Hydrophone with attitude control function and monitoring equipment thereof - Google Patents
Hydrophone with attitude control function and monitoring equipment thereof Download PDFInfo
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- CN116929538B CN116929538B CN202310927833.1A CN202310927833A CN116929538B CN 116929538 B CN116929538 B CN 116929538B CN 202310927833 A CN202310927833 A CN 202310927833A CN 116929538 B CN116929538 B CN 116929538B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
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- -1 alicyclic amine Chemical class 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 8
- 150000004982 aromatic amines Chemical class 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B22/18—Buoys having means to control attitude or position, e.g. reaction surfaces or tether
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B2022/006—Buoys specially adapted for measuring or watch purposes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The application relates to a hydrophone with an attitude control function and monitoring equipment thereof, which comprises a hydrophone body with a preset monitoring direction; the circumferential positioning piece and the vertical piece are respectively fixed at the two opposite ends of the hydrophone body; the riser is configured to enable the hydrophone body to maintain an upright attitude; the circumferential positioning piece is configured to enable the preset monitoring direction of the hydrophone body to be kept within a specific range to be monitored so as to monitor acoustic signals within the specific range. The hydrophone with the attitude control function and the monitoring equipment thereof can stably realize underwater attitude control with low cost.
Description
Technical Field
The application relates to the technical field of hydrophones, in particular to a hydrophone with a gesture control function and monitoring equipment thereof.
Background
Hydrophones are transducers that convert acoustic signals into electrical signals and are used to receive acoustic signals in water, known as receiving transducers, also commonly referred to as hydrophones. The hydrophone is widely used for underwater communication, continent detection, target positioning, tracking and the like, is an important part of sonar, and is free from underwater acoustic transducers for underwater detection, identification and communication, marine environment monitoring and marine resource development.
The hydrophone commonly used in the market at present has the factors of difficult attitude control, difficult direction maintenance and the like; the monitoring function of the hydrophone in the water environment is unstable, and the use experience is affected.
Disclosure of Invention
Based on the above, it is necessary to provide a hydrophone with a posture control function and a monitoring device thereof, which can realize underwater posture control so as to stabilize the monitoring function.
A first aspect of the present application provides a hydrophone comprising: the hydrophone body is provided with a preset monitoring direction; the circumferential positioning piece and the vertical piece are respectively fixed at the two opposite ends of the hydrophone body; the riser is configured to enable the hydrophone body to maintain an upright attitude; the circumferential positioning piece is configured to enable the preset monitoring direction of the hydrophone body to be kept within a specific range to be monitored so as to monitor acoustic signals within the specific range.
In one embodiment, the upright is fixed at the top end of the hydrophone body in the vertical direction; the circumferential positioning piece is fixed at the bottom end of the hydrophone body along the vertical direction; the density of the stand-offs is lower than the density of water; the circumferential positioning member has a density higher than that of water.
In one embodiment, the profile of the upstand conforms to the profile of the hydrophone body; the length of the vertical piece along the vertical direction is A, and the length B of the hydrophone body along the vertical direction is less than or equal to 2A.
In one embodiment, the hydrophone body includes a chip and a cylinder housing surrounding the chip; the cylinder shell is prepared by pouring after mixing a hardening agent and a plastic base material; the plastic base material is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine.
In one embodiment, the hydrophone includes connection cables that are electrically connected to the chip.
In one embodiment, the stand-off comprises a first barrel cast from a hardener mixed with a plastic substrate; the plastic substrate is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine; the first cylinder body is integrally connected with the hydrophone body.
In one embodiment, the circumferential positioning member comprises a magnetic portion and a second cylinder surrounding the magnetic portion; the second cylinder is prepared by pouring after mixing a hardening agent and a plastic base material; the plastic substrate is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine; the second cylinder body is integrally connected with the hydrophone body.
In one embodiment, the magnetic part is a bar-shaped permanent magnet; the magnetic part is horizontally arranged in the second cylinder.
In one embodiment, the second cylinder has a contour that conforms to the contour of the hydrophone body.
A second aspect of the present application provides a listening device comprising a hydrophone as described above.
The beneficial effects are that:
according to the hydrophone with the attitude control function and the monitoring equipment thereof, through the arrangement of the hydrophone body, the circumferential positioning piece and the vertical piece; the hydrophone body is provided with a preset monitoring direction; the circumferential positioning piece and the vertical piece are respectively fixed at the two opposite ends of the hydrophone body; when the hydrophone is placed in a water environment, the floating state of the water is kept, the hydrophone body can be kept in an upright posture through the upright piece, accurate receiving of acoustic signals in the water environment is ensured, and posture use requirements are met; the preset monitoring direction of the hydrophone body can be kept in a specific range to be monitored through the circumferential positioning piece, so that the hydrophone body can overcome the interference of water flow or other external factors in the water environment, the preset monitoring direction is always kept unchanged towards the specific range to be monitored, and the hydrophone body can stably monitor acoustic signals in the specific range.
Drawings
Fig. 1 is a schematic structural diagram of a hydrophone with attitude control function according to an embodiment of the present application.
Fig. 2 is a schematic diagram of the internal structure of a hydrophone with attitude control functionality according to another embodiment of the application.
Fig. 3 is a schematic structural diagram of the stand-up member and the connecting cable of the present application.
Fig. 4 is an E-E cross-sectional view of the structure shown in fig. 2.
Wherein, the direction shown by X is the vertical direction, and the axis shown by Y is the central axis.
Reference numerals illustrate:
the hydrophone comprises a hydrophone body-10, a bottom end-11, a top end-12, a chip-13, a cylinder housing-14, a circumferential positioning piece-20, a magnetic part-21, a second cylinder body-22, an upright piece-30, a first cylinder body-31, a cavity-32 and a connecting cable-40.
Detailed Description
Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, these terms "first," "second," etc., 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, a particular order, or a primary or secondary relationship.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present application, the terms "plurality" and "a plurality" mean at least two (including two), such as two, three, etc., unless specifically defined otherwise. Similarly, the terms "plurality of sets" and "plurality of sets" when present refer to more than two sets (including two sets), and the terms "plurality of sheets" when present refer to more than two sheets (including two sheets).
In the description of the embodiments of the present application, if there are any such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counter-clockwise", "axial", "radial", "circumferential", etc., these terms refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," etc., should be construed broadly if any. For example, the two parts can be fixedly connected, detachably connected or integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
A first aspect of the present application provides a hydrophone with attitude control functionality.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a hydrophone with attitude control function according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of the hydrophone according to another embodiment of the present application. The hydrophone with attitude control function includes a hydrophone body 10, a circumferential positioning member 20, and an upright member 30.
The hydrophone body 10 is provided with a preset monitoring direction; can monitor the acoustic signal in the water; specifically, the hydrophone body 10 is built with a conversion element for converting acoustic signals into corresponding electrical signals, thereby completing an underwater monitoring function.
It should be noted that, the conversion element generally has relatively high sensitivity in a certain direction, and deflects to two sides by a certain angle with the sensitivity direction of the conversion element as the center, typically 15 ° to 30 °, which can be regarded as the preset listening direction of the hydrophone body 10. The conversion element may be a piezoelectric thin film such as PZT piezoelectric ceramic (lead zirconate titanate piezoelectric ceramic), alN (aluminum nitride), alScN (aluminum scandium nitrogen), znO (zinc oxide), BFO (bismuth ferrite), or the like.
The circumferential positioning members 20 and the standing members 30 are fixed to opposite ends of the hydrophone body 10, respectively. The upstand 30 is configured such that the hydrophone body 10 remains in an erect position; the circumferential positioning members 20 are configured to enable the preset listening direction of the hydrophone body 10 to be kept within a specific range to be listened to, so as to listen to acoustic signals within the specific range.
When the hydrophone with the attitude control function is placed in a water environment, the floating state is kept by utilizing the buoyancy of water, the hydrophone body 10 can be kept in an upright attitude through the upright piece 30, the accurate receiving of acoustic signals in the water environment is ensured, and the attitude use requirement is met; in addition, the preset monitoring direction of the hydrophone body 10 can be kept within a specific range to be monitored through the circumferential positioning piece 20, so that the hydrophone body 10 can overcome the interference of water flow or other external factors in the water environment, and the preset monitoring direction is always kept unchanged towards the specific range to be monitored, so that the hydrophone body 10 can stably monitor the acoustic signals within the specific range.
In some embodiments, referring to fig. 1 and 2, and in combination with fig. 3 and 4, fig. 3 is a schematic structural view of the stand-up member and the connection cable of the present application; fig. 4 is an E-E cross-sectional view of the structure shown in fig. 2.
In the vertical direction, the hydrophone body 10 has opposite bottom ends 11 and top ends 12. The upright piece 30 is fixed at the top end 12 of the hydrophone body 10 along the vertical direction; the circumferential positioning member 20 is fixed at the bottom end 11 of the hydrophone body 10 in the vertical direction.
The density of the upstands 30 is lower than that of water; the density of the circumferential positioning members 20 is higher than the density of water. The water in this place may be fresh water or sea water.
The density of the stand pieces 30, the density of the water, and the density of the circumferential positioning pieces 20 are sequentially increased by providing them. That is, the circumferential positioning member 20 generates downward force along the vertical direction after the resultant force of the self gravity and the water buoyancy in the water environment, and the standing member 30 generates upward force along the vertical direction after the resultant force of the self gravity and the water buoyancy in the water environment, so that both ends of the hydrophone body 10 are respectively subjected to upward and downward force, and further, the circumferential positioning member 20-the hydrophone body 10-the standing member 30 can maintain a vertical posture in the water environment; even if the device is interfered by water flow or other external factors, the device can be restored to the vertical posture after the interference of the external factors disappears, so that the accurate receiving of acoustic signals in the water environment is ensured, and the posture using requirement is met.
It will be appreciated that the average density of the hydrophone body 10 can be generally made substantially identical to that of water, and how the hydrophone body 10 is combined with the circumferential positioning elements 20 being greater than water and the standing elements 30 being less than water, so that the overall average density of the circumferential positioning elements 20-hydrophone body 10-standing elements 30 should be comparable to that of water, and further that the hydrophone with attitude control function is generally suspended in a water environment for monitoring of acoustic signals.
In some embodiments, referring to FIGS. 1 and 2, the profile of the upstand 30 conforms to the profile of the hydrophone body 10; in particular, the hydrophone body 10 may be selected to be cylindrical, square, and the upstand 30 may be correspondingly cylindrical or square, depending on the application requirements. The length of the upright piece 30 in the vertical direction is A, and the length of the hydrophone body 10 in the vertical direction is B, so that 2A is less than or equal to B.
Taking a cylinder as an example; the vertical piece 30 and the hydrophone body 10 have the same value on the diameter or side length of the outline, and 2A is less than or equal to B, so that the hydrophone with the posture control function is in an elongated cylindrical shape as a whole, and has attractive appearance and practicability. The bottom of the upright piece 30 is connected with the hydrophone body 10, and the connected area of the upright piece and the hydrophone body does not generate obvious excessive dividing line, so that on one hand, the water flow resistance is reduced, the interference of external factors is reduced, and on the other hand, the hydrophone with the posture control function can have more attractive appearance and practicability from the whole appearance.
In some embodiments, referring to fig. 1-4, a hydrophone body 10 includes a chip 13 and a barrel housing 14 surrounding the chip 13.
The chip 13 of the hydrophone body 10 may be a fiber optic hydrophone chip or a vector hydrophone chip, depending on the application requirements. The vector hydrophone chip improves the isotropic noise resistance of the system and can realize the recognition of far-field multiple targets; the optical fiber hydrophone chip has the advantages of small volume, easiness in wavelength division multiplexing, relatively simple manufacturing process, reliable performance and the like, and is suitable for application occasions such as large-scale shore-based sea area defending and warning systems, carrier-based sonar arrays, marine noise monitoring arrays and the like, in particular to hydrophone towing array application occasions.
The conversion element is integrated on the chip 13 to perform the function of converting the acoustic signal into a corresponding electrical signal. It will be appreciated by those skilled in the art that the chip 13 may also incorporate the necessary components to perform the function of converting acoustic signals into corresponding electrical signals and amplifying the electrical signals.
The cylinder shell 14 wraps the outer side of the chip 13 and can play a role in isolating water from the water. Meanwhile, the density of the chip 13 can be larger than that of water, and the density of the cylinder shell 14 can be slightly lower than that of water, so that the overall density of the hydrophone body 10 is approximately equal to that of water, and the hydrophone with the attitude control function can be conveniently suspended in water environment.
The cylinder shell 14 is formed by pouring after mixing a hardening agent and a plastic base material; the plastic base material is one or more of resin, polyurethane and rubber, and can also be a precursor of the resin, polyurethane and rubber. The hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine. The material has the advantages of low cost, stable property, good water resistance and the like, and can allow the hydrophone body 10 to work in water environment for a long time.
In some embodiments, the hydrophone includes connection cables 40, the connection cables 40 being electrically connected to the chip 13. The connection cable 40 passes through the stand-offs 30 in the vertical direction and is connected to the chip 13. The connection cable 40 is generally longer than 10 meters, and can be used in deep water, and both ends of the connection cable 40 are respectively connected to the hydrophone with the attitude control function and an external device, so that the external device can provide electric energy for the chip 13 through the connection cable 40 to complete the function of monitoring acoustic signals in the water. In addition, the chip 13 can convert underwater acoustic signals and send corresponding electric signals to the outside through the connection cable 40 to complete information transmission.
Unlike the previous embodiment, the hydrophone with the attitude control function can be provided separately and realize wireless transmission with the outside. Specifically, the hydrophone body 10 may be provided with a corresponding battery (not shown) and a wireless transmitting element, the battery provides electric energy to the converting element and the chip 13, the converting element is used for monitoring the acoustic signal in the water, the chip 13 is used for converting the acoustic signal into an electric signal, amplifying the electric signal and transmitting the electric signal to the outside through the wireless transmitting element, and information transmission is completed.
In some embodiments, referring to fig. 1 to 4, the circumferential positioning member 20 includes a magnetic portion 21 and a second cylinder 22 surrounding the magnetic portion 21. The magnetic part 21 has magnetism and can be oriented according to the magnetic field of the earth; it is emphasized that the hydrophone with attitude control function is suspended in water, and when rotating around the central axis Y extending along the vertical direction, the resistance generated by the water is extremely small and can be ignored; the magnetic part 21 keeps the preset monitoring direction of the hydrophone body 10 unchanged within a specific range to be monitored, so that a sensitive receiving surface for receiving the acoustic signals on the conversion element always keeps unchanged towards the specific range to be monitored; once the acoustic signal appears in the specific range, the conversion element can receive the acoustic signal, and finally the conversion function of the corresponding acoustic signal and the electric signal is finished. Even if the hydrophone body 10 deviates from a specific range to be monitored due to interference of water flow or other external factors in the water environment, the preset monitoring direction of the hydrophone body 10 can be kept to the specific range to be monitored again by utilizing the magnetic field after the interference of the external factors disappears, so that the use requirement is met.
In the related art, a Micro-Electro-Mechanical-System (MEMS) hydrophone mostly adopts a MEMS gyroscope to perform attitude control; however, the cost of the structure is very high, the preparation cost and the processing difficulty of the MEMS gyroscope are particularly high, and even the cost of the MEMS gyroscope is higher than that of the hydrophone, so that the MEMS gyroscope cannot be widely applied. The hydrophone with the attitude control function in the embodiment of the application can complete attitude maintenance and circumferential positioning by only relying on the hydrophone without providing extra power because of not needing to arrange an MEMS gyroscope with very high manufacturing cost, and has the advantages of small volume, light weight and low cost; can meet the practical requirements of deep sea environment arrangement.
It is emphasized that a plurality of the hydrophones can form a hydrophone matrix, so that the hydrophone matrix has a larger application value.
In practical application, because the emitting direction of the acoustic signals is not known, a hydrophone matrix which is formed by regularly arranging a plurality of hydrophones according to a certain shape can be arranged under water, so that the acoustic signals from any direction in the water environment can be monitored. However, the existing hydrophone of China is only limited to be arranged in a land-based water environment, and the existing serving hydrophone is a traditional spherical hydrophone which is large in size and energy consumption and can not randomly switch the interception matrix after arrangement is completed. An underwater target which is far from land but has invaded the ocean of our country cannot be found early.
In the embodiment of the application, a plurality of groups of hydrophone groups can be placed under water synchronously and continuously, the distance between the hydrophone groups in each group is kept to be more than 10m, each hydrophone group is provided with at least more than 10 hydrophones, and preset monitoring directions of different azimuth angles are preset in advance according to requirements; thus, a hydrophone matrix is formed. For possible acoustic signal sources in the deep sea environment, the acoustic signals can be converted into electrical signals with different sizes by arranging hydrophones with different preset monitoring directions, and then the direction and the moving speed of potential targets in the water environment can be calculated and judged; thereby realizing the actual effect of open sea anti-diving. .
In some embodiments, referring to fig. 1-4, the second cylinder 22 has a contour that conforms to the contour of the hydrophone body 10. Specifically, the hydrophone body 10 can be selected to be cylindrical or square according to the use requirement, and the outline of the second cylinder 22 is correspondingly cylindrical or square. The length C of the magnetic part 21 is smaller than the outer diameter of the hydrophone body 10; the width D of the magnetic portion 21 is 3 to 6mm. Thus, the magnetic portion 21 can be prevented from protruding from the circumferential side of the hydrophone body 10, so that the hydrophone is formed in an elongated cylindrical shape as a whole. The upper end of the second cylinder 22 is connected with the hydrophone body 10, and the connected area of the second cylinder and the hydrophone body does not generate obvious excessive dividing line, so that on one hand, the water flow resistance is reduced, and on the other hand, the interference of external factors is reduced, and on the other hand, the hydrophone has more attractive appearance and practicability from the whole appearance.
In some embodiments, referring to fig. 4, the magnetic portion 21 is a bar-shaped permanent magnet; the magnetic portion 21 is horizontally disposed within the second cylinder 22. The magnetic part 21 can be directly purchased into a permanent magnet finished product on the market or processed into a long shape or a bar shape by self, and the two ends of the magnetic part 21 should be marked with N, S poles in advance so as to prevent confusion. The circumferential positioning member 20 may be prepared in a casting manner; in the preparation process, the mold can be fixed, the magnetic part 21 is placed in the mold, the angle of the magnetic part can be set according to the actual requirement of the hydrophone, then the mixed liquid for encapsulation and solidification is poured in, the liquid filling and encapsulation are adopted, and the mold is released after solidification. The die is usually made of polytetrafluoroethylene, so that the stability is good, the dimensional processing precision is high, and the cost is low.
In some embodiments, the circumferential locator 20 may include a weight disposed within the second barrel 22. The weight may be metal, plastic, or other material having a density greater than water. In this way, the density of the whole circumferential positioning member 20 can be increased, and it is ensured that under water environment, the circumferential positioning member 20 generates downward force along the vertical direction after the resultant force of self gravity and water buoyancy.
In some embodiments, the upstand 30 comprises a first barrel 31 cast from a hardener mixed with a plastic substrate. The second cylinder 22 is formed by pouring a hardening agent mixed with a plastic base material. Similarly, the plastic substrate is one or more of resin, polyurethane and rubber, and can also be a precursor of the resin, polyurethane and rubber. The hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine. The material obtaining cost is low, the used materials are common and easy to obtain, compared with the method for manufacturing the gyroscope by micro-machining of a photoetching machine to control the attitude, the method has the advantages that the attitude of the hydrophone with the attitude control function can be kept under the water environment at lower cost.
Alternatively, the upstand 30 includes a cavity 32 formed inside the first barrel 31. In this way, the density of the entire standing member 30 can be reduced, and it is ensured that the standing member 30 generates an upward force in the vertical direction due to the resultant force of its own gravity and water buoyancy in the water environment.
Cavity 32 is typically a small diameter cavity; in the process of preparing the first cylinder 31, the slurry for pouring the mold may be removed from the conventional process of evacuating the slurry, so that the cavity 32 may be formed using a small amount of air naturally generated in the slurry.
In some embodiments, the first barrel 31 and the hydrophone body 10 can be manufactured separately, and the second barrel 22 and the hydrophone body 10 can be manufactured separately; thus, the process is simple and the design is convenient. The first split cylinder 31 and the hydrophone body 10, and the second split cylinder 22 and the hydrophone body 10 can be fixed in a threaded connection, a melt welding or an adhesive connection mode;
unlike the previous embodiment, the first cylinder 31 can be integrally connected with the hydrophone body 10. The second cylinder 22 may be integrally connected with the hydrophone body 10.
The hydrophone can be integrally prepared in a pouring mode, so that the structure strength is good, the poured material is easy to obtain, and the cost is low. Specifically, the hydrophone body 10, which requires the addition of the underwater attitude control function, is prepared, and the surface thereof is subjected to cleaning and drying treatment. Secondly, evenly mixing resin or polyurethane or rubber and hardening agent according to a proportion. And finally, uniformly coating a layer of release agent on the inner wall of the die in a thin and uniform manner. Finally, the first cylinder 31 and the second cylinder 22 are sequentially placed into a special packaging mold, mixed curing liquid is poured into the mold, and the mold is removed after curing.
A second aspect of the present application provides a listening device comprising a hydrophone with attitude control functionality as described above.
In some embodiments, the monitoring device further comprises a receiver for receiving the electrical signals from the chip 13, the receiver being typically located on land or on a ship, from which the sound source direction of the underwater target can be determined from the electrical signals emitted by a single hydrophone with attitude control functionality; according to the electric signals sent by a plurality of hydrophones in the hydrophone array, the sound source direction, the moving direction and the speed of the underwater target can be judged.
In some embodiments, the listening device may be a conventional multi-band oscilloscope, or other conventional professional hydrophone signal analysis device).
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (9)
1. A hydrophone with attitude control functionality, comprising:
the hydrophone body (10) is provided with a preset monitoring direction;
the circumferential positioning piece (20) and the vertical piece (30) are respectively fixed at two opposite ends of the hydrophone body (10);
the riser (30) is configured to enable the hydrophone body (10) to remain in an upright position; the circumferential positioning piece (20) is configured to enable the preset monitoring direction of the hydrophone body (10) to be kept within a specific range to be monitored so as to monitor acoustic signals within the specific range;
the vertical piece (30) is fixed at the top end (12) of the hydrophone body (10) along the vertical direction; the circumferential positioning piece (20) is fixed at the bottom end (11) of the hydrophone body (10) along the vertical direction; the riser (30) has a density lower than that of water; the circumferential positioning member (20) has a density higher than that of water.
2. Hydrophone with attitude control function according to claim 1, characterized in that the profile of the upstand (30) corresponds to the profile of the hydrophone body (10); the length of the vertical piece (30) along the vertical direction is A, and the length B of the hydrophone body (10) along the vertical direction is less than or equal to 2A.
3. Hydrophone with attitude control functionality according to claim 1, characterized in that the hydrophone body (10) comprises a chip (13) and a cartridge housing (14) surrounding the chip (13);
the cylinder shell (14) is prepared by pouring after mixing a hardening agent and a plastic base material; the plastic base material is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine.
4. A hydrophone with attitude control functionality according to claim 3, characterized in that the hydrophone comprises a connection cable (40), the connection cable (40) being electrically connected with the chip (13).
5. Hydrophone with attitude control function according to claim 1, characterized in that the upstand (30) comprises a first cylinder (31) made of a hardener mixed with a plastic base material and poured; the plastic substrate is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine;
the first cylinder body (31) is integrally connected with the hydrophone body (10).
6. Hydrophone with attitude control function according to claim 1, characterized in that the circumferential positioning element (20) comprises a magnetic part (21) and a second cylinder (22) surrounding the magnetic part (21);
the second cylinder (22) is formed by pouring after mixing a hardening agent and a plastic base material; the plastic substrate is one or more of resin, polyurethane and rubber, and the hardener is one or more of polyamide, aliphatic amine, alicyclic amine and aromatic amine;
the second cylinder (22) is integrally connected with the hydrophone body (10).
7. Hydrophone with attitude control function according to claim 6, characterized in that the magnetic part (21) is a bar-shaped permanent magnet; the magnetic part (21) is horizontally arranged in the second cylinder (22).
8. The hydrophone with attitude control function according to claim 6, wherein the outline of the second cylinder (22) coincides with the outline of the hydrophone body (10).
9. A listening device, characterized by: a hydrophone with attitude control functionality as claimed in any of claims 1 to 8.
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| CN202310927833.1A CN116929538B (en) | 2023-07-27 | 2023-07-27 | Hydrophone with attitude control function and monitoring equipment thereof |
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| CN202310927833.1A CN116929538B (en) | 2023-07-27 | 2023-07-27 | Hydrophone with attitude control function and monitoring equipment thereof |
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| CN116929538A (en) | 2023-10-24 |
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