Underwater sound power amplifier for ocean sound tomography system

By designing a water sound power amplifier with a DCDC power module and the regulatory regulatory function in the marine voice layer system, the problem of signal distortion in the existing technology has been solved, and the output of high -line and high signal quality is realized. And through the detachable chassis and heat dissipation design to adapt to the marine environment.

CN222395653UActive Publication Date: 2025-01-24ZNPL OCEAN DETECTION SYST ENG
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Patent Information

Application Number
CN202323541818.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-22
Publication Date
2025-01-24
Estimated Expiration
2033-12-22

AI Technical Summary

Technical Problem

In practical applications, existing water acoustic power amplifiers are susceptible to changes in the frequency amplitude of the input signal and nonlinear characteristics, resulting in distortion of the output signal, reducing linearity, and affecting signal quality and accuracy.

Method used

Design a water sound power amplifier for the marine voice layer system, use the DCDC power module to provide isolation power supply, feedback signals through the power amplifier module, the relay module for regulatory regulation, enhance the output linearity, and through the disassembly and assembly of assembly The chassis structure and heat dissipation design ensure the stability and durability of the equipment.

Benefits of technology

A real linear amplification of the input signal is realized, the linearity of the output signal is enhanced, the quality and accuracy of the signal are improved, and the disassembly chassis and good heat dissipation design are used to adapt to the marine environment and facilitate installation and maintenance.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to an underwater sound power amplifier for an ocean sound tomography system, which comprises a DCDC (Direct Current to Direct Current) power supply module, a power amplification module, a relay module, a communication module, a control module, an analog front end module and a boosting transformer module which are arranged in a case, the analog front end module is powered by the + / -15V power supply module, and the DCDC power supply module provides isolated positive and negative power supplies with different voltage levels for other modules. And the analog front-end module is electrically connected with the power amplification module, outputs two paths of signals with the same frequency and opposite phases, and transmits the signals to the power amplification module. According to the underwater sound power amplifier for the ocean sound tomography system, the DCDC power supply module is designed to provide positive and negative power supplies with different isolated voltage levels, high-power rated output power is provided, signals are fed back through the power amplification module, voltage stabilization regulation and control are carried out through the relay module, and therefore the output linearity is enhanced.
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Description

Technical Field

[0001] The utility model relates to the technical field of marine acoustic tomography system tools, in particular to an underwater acoustic power amplifier used in a marine acoustic tomography system. Background Art

[0002] The ocean acoustic tomography system is a remote sensing technology that uses acoustic methods to measure the dynamic characteristics of the ocean over a large area of ​​sea. The seawater temperature, salinity, flow direction, and velocity all affect the speed at which sound waves propagate in seawater. Therefore, the speed at which sound waves propagate can be used to infer the temperature and salinity of the water area through which the sound waves pass, and the difference in the speed of the round-trip propagation of sound waves can be used to infer the flow velocity and direction of the water area.

[0003] The underwater acoustic power amplifier is one of the most important components in the ocean acoustic tomography system. It is a device that provides power signals to the (load) transducer. In the underwater acoustic equipment, the power amplifier completes the conversion of electrical signals into acoustic signal energy by radiating energy into the water. Its performance directly determines the performance indicators of the entire ocean acoustic tomography system.

[0004] The underwater acoustic power amplifier is an important component of the sonar transmitter and is used to drive the underwater acoustic transducer. In practical applications, the existing underwater acoustic power amplifier will be affected by various factors, such as the frequency amplitude change of the input signal and the nonlinear characteristics of the amplifier itself. This will lead to signal nonlinearity between the output signal and the input signal, which will cause distortion and reduce the output linearity, ultimately affecting the quality and accuracy of the signal. Therefore, an underwater acoustic power amplifier for an ocean acoustic tomography system is proposed to solve the above problems. Utility Model Content

[0005] Based on the above description, the utility model provides an underwater acoustic power amplifier for an ocean acoustic tomography system, which solves the technical problems pointed out in the above background technology.

[0006] The utility model solves the above technical problems with the following technical solutions: an underwater acoustic power amplifier for an ocean acoustic tomography system, comprising: a DCDC power module, a power amplifier module, a relay module, a communication module, a control module, an analog front-end module and a step-up transformer module arranged in a chassis, wherein the control module is powered by a 5V power module, the analog front-end module is powered by a ±15V power module, and the DCDC power module provides isolated positive and negative power supplies of different voltage levels for other modules;

[0007] The analog front-end module is electrically connected to the power amplifier module, and outputs two signals with the same frequency and opposite phases, and transmits them to the power amplifier module;

[0008] The power amplifier module is electrically connected to the boost transformer module, and is used to linearly amplify the signal without distortion, and feed back the signal. The relay module performs voltage regulation to enhance output linearity;

[0009] The step-up transformer module is used to bridge and amplify the output signals sent by the two power amplifier modules.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the chassis is a detachable assembly structure to facilitate installation and maintenance.

[0012] Furthermore, the chassis includes a front plate, heat dissipation tooth side plates, a rear plate, an upper cover plate and a lower base plate, and the front plate, heat dissipation tooth side plates, the rear plate, the upper cover plate and the lower base plate are fixed by screws.

[0013] Furthermore, an indicator light, a radio frequency connector, a waterproof aviation socket and a U-shaped handle are provided on one side of the front panel.

[0014] Furthermore, a spring handle is installed on one side of the heat dissipation tooth side plate to provide grip, and the occupied space is reduced by folding.

[0015] Furthermore, a chassis foot pad and a heat sink are provided on one side of the lower base plate to accelerate heat dissipation.

[0016] Furthermore, the number of the DCDC power supply modules and the power amplifier modules are two groups each, and the number of the 5V power supply modules, ±15V power supply modules, relay modules, communication modules, control modules, analog front-end modules and boost transformer modules are all one group.

[0017] Furthermore, the DCDC power module is mounted on the lower base plate through a power module pad support, the power module pad is connected to a pallet through hexagonal copper studs and screws, the relay module, step-up transformer module, analog front-end module, ±15V power module, control module, communication module, and 5V power module are all mounted on the pallet, and the power amplifier module is supported by the power amplifier module pad and is side-mounted on one side of the two heat dissipation tooth side plates.

[0018] Furthermore, a protective resistor is also provided on the support plate for over-current protection and over-temperature protection.

[0019] Furthermore, each mounting and fitting surface of the front plate, the heat dissipation gear side plate, the rear plate, the upper cover plate and the lower base plate is installed with a round rubber strip.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0021] 1. The underwater acoustic power amplifier used in the marine acoustic tomography system is designed with a DCDC power supply module to provide positive and negative power supplies of different voltage levels with isolation, and to provide high-power rated output power. The signal is fed back through the power amplifier module, and the relay module performs voltage regulation to enhance output linearity.

[0022] 2. The underwater acoustic power amplifier used in the marine acoustic tomography system has a detachable assembly structure, which is easy to install. It has an IP67-level sealing design through a round rubber strip and is suitable for the marine environment.

[0023] 3. The design of the heat dissipation side panels and heat sink of the underwater acoustic power amplifier used in the marine acoustic tomography system allows the chassis to dissipate heat well, thereby allowing the underwater acoustic power amplifier to work better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A block diagram of an underwater acoustic power amplifier for an ocean acoustic tomography system provided by an embodiment of the utility model;

[0025] Figure 2 A front view of an underwater acoustic power amplifier for an ocean acoustic tomography system provided by an embodiment of the utility model;

[0026] Figure 3 for Figure 2 Schematic diagram of the left side;

[0027] Figure 4 This is a three-dimensional schematic diagram of an embodiment of the utility model after removing the front plate, the rear half and the heat dissipation gear side plate;

[0028] Figure 5 This is a top view of an embodiment of the utility model with the upper cover removed;

[0029] Figure 6 for Figure 2 A schematic front cross-sectional view of ;

[0030] Figure 7 It is a top view schematic diagram of the upper cover plate and its connection structure in the embodiment of the utility model;

[0031] Figure 8 It is a bottom view schematic diagram of the lower base plate and its connection structure in an embodiment of the utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Front panel; 2. Heat dissipation side panel; 3. Back panel; 4. Upper cover; 5. Lower base; 6. Heat sink; 7. Indicator light; 8. RF connector; 9. Waterproof aviation socket; 10. Spring handle; 11. Chassis foot pad; 12. U-shaped handle; 13. Relay module; 14. Protection resistor; 15. Support plate; 16. Step-up transformer module; 17. Power amplifier module; 18. Analog front end module; 19. ±15V power supply module; 20. Control module; 21. Communication module; 22. 5V power supply module; 23. Power amplifier module pad; 24. DCDC power supply module; 25. Power supply module pad; 26. Hexagonal copper stud; 27. Round rubber strip; 28. Cable tie seat. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figure 1-8 As shown, an underwater acoustic power amplifier for an ocean acoustic tomography system in this embodiment includes a chassis and has a total of nine modules, namely a DCDC power module 24, a power amplifier module 17, a relay module 13, a communication module 21, a control module 20, an analog front-end module 18 and a step-up transformer module 16, as well as a 5V power module 22 and a ±15V power module 19. The nine modules are all arranged in the chassis, so that the chassis forms a protection for the nine modules and ensures that the nine modules operate in good condition.

[0036] It should be noted that among the nine modules, firstly, the control module 20 is powered by the 5V power module 22, that is, the control module 20 only requires a 5V voltage, but it is understandable that the control module 20 also supports the use of a 12V power module, for example. Secondly, the analog front-end module 18 is powered by a ±15V power module 19, and the DCDC power module 24 provides other modules with isolated positive and negative power supplies of different voltage levels. Its maximum output power is 3500W, and it supports protection functions such as overvoltage, overcurrent, undervoltage and programmable switches.

[0037] It should also be noted that the number of DCDC power supply modules 24 and power amplifier modules 17 are two groups each, and the number of 5V power supply modules 22, ±15V power supply modules 19, relay modules 13, communication modules 21, control modules 20, analog front-end modules 18 and boost transformer modules 16 are all one group, that is, a total of 11 PCB boards.

[0038] In addition, the analog front-end module 18 is electrically connected to the power amplifier module 17. The analog front-end module 18 is used to perform pre-processing such as buffering and filtering on the input signal, and output two signals with the same frequency and opposite phases. The analog front-end module 18 is equipped with a high-resolution programmable attenuator, which can finely adjust the amplitude of the output signal, so that the underwater acoustic power amplifier of the marine acoustic tomography system supports a wide range of signal inputs and high signal-to-noise ratio signals, and has excellent dynamic response.

[0039] Further explanation, the power amplifier module 17 is electrically connected to the boost transformer module 16. The power amplifier module 17 consists of three circuits: an input stage, an excitation stage, and an output stage. The input stage mainly plays a buffering role to increase the stability of the entire power amplifier circuit and reduce noise. The excitation stage provides the output stage with a sufficiently large excitation current and a stable static bias, and the excitation stage and the power output stage provide sufficient excitation current. The output stage provides a negative feedback signal. After receiving the output signal of the analog front-end module 18, the signal is linearly amplified without distortion, and the signal is fed back. The relay module performs voltage regulation to enhance the output linearity.

[0040] The boost transformer module 16 is used to bridge-amplify the output signals of the two power amplifier modules 17 to obtain a signal that is twice the output value of the power amplifier module 17, and then boost the output high-voltage signal to drive acoustic elements such as transducers. In addition, the voltage and current of the output signal are sampled in real time to facilitate external monitoring.

[0041] To further explain, the main function of the control module 20 is to indicate the signal amplification factor and operating status indication and output, etc. The main function of the relay module 13 is to stabilize the voltage and control the signal output by the power amplifier module 17 to the step-up transformer module 16. The module receives the control signal of the control module 20 to control the output main circuit.

[0042] In this embodiment, the chassis of the underwater acoustic power amplifier used in the marine acoustic tomography system is a detachable assembly structure to facilitate installation and subsequent maintenance.

[0043] Specifically, Figure 2-8 As shown, the chassis includes a front plate 1, a heat dissipation tooth side plate 2, a rear plate 3, an upper cover plate 4 and a lower base plate 5, wherein the front plate 1 and the rear plate 3 are respectively arranged on the front and back sides of the upper cover plate 4 and the lower base plate 5, the heat dissipation tooth side plate 2 is arranged on the left and right sides of the upper cover plate 4 and the lower base plate 5, and the front plate 1, the heat dissipation tooth side plate 2, the rear plate 3, the upper cover plate 4 and the lower base plate 5 are fixed by screws, so as to facilitate installation and subsequent maintenance.

[0044] It should be noted that an indicator light 7, a radio frequency connector 8, a waterproof aviation socket 9 and a U-shaped handle 12 are provided on one side of the front panel 1. There are two indicator lights 7, one indicating whether the power is started, and the other indicating whether the hydroacoustic power amplifier used for the marine acoustic tomography system is operating, so as to realize real-time monitoring of the working status. The radio frequency connector 8 is used to access the signal, and the waterproof aviation socket 9 is an electromechanical component of the electrical circuit.

[0045] In order to facilitate the transfer of the underwater acoustic power amplifier used in the marine acoustic tomography system, a spring handle 10 is installed on one side of the heat dissipation gear side plate 2 to provide grip and reduce the occupied space by folding.

[0046] In order to ensure that the underwater acoustic power amplifier used in the marine acoustic tomography system can dissipate heat well, a chassis foot pad 11 and a heat sink 6 are provided on one side of the lower base plate 5, wherein the chassis foot pad 11 supports the chassis to form a height difference, thereby providing space support for the heat sink 6, and the heat sink 6 accelerates heat dissipation through convection.

[0047] In addition, it should be noted that the DCDC power module 24 is supported and installed on the lower base plate 5 through the power module pad 25, the power module pad 25 is connected to the lower base plate 5 by screws, the DCDC power module 24 is connected to the power module pad 25 by screws, and the support plate 15 is connected to the power module pad 25 by hexagonal copper studs 26 and screws, wherein the hexagonal copper studs 26 support the power module pad 25, and the screws play a fixing role. The relay module 13, the step-up transformer module 16, the analog front-end module 18, the ±15V power module 19, the control module 20, the communication module 21, and the 5V power module 22 are all installed on the support plate 15 by screws, and the power amplifier module 17 is supported by the power amplifier module pad 23 and is side-mounted on one side of the two heat dissipation tooth side plates 2, and is located in the chassis, the power amplifier module pad 23 and the heat dissipation tooth side plates 2 are fixed by screws, and the power amplifier module pad 23 and the power amplifier module 17 are fixed by screws.

[0048] Furthermore, a protective resistor 14 is provided on the support plate 15 for over-current protection and over-temperature protection, and each mounting mating surface of the front plate 1, the heat dissipation tooth side plate 2, the rear plate 3, the upper cover plate 4 and the lower base plate 5 is installed with a round rubber strip 27 for sealing and waterproofing, which can achieve an IP67 level sealing design and thus adapt to the marine environment.

[0049] In addition, a plurality of tie seats 28 are fixed on the lower base plate 5 to bind the wires and facilitate wiring and cable management.

[0050] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A hydroacoustic power amplifier for an ocean acoustic tomography system, characterized in that: include: The DCDC power module, power amplifier module, relay module, communication module, control module, analog front-end module and step-up transformer module are arranged in the chassis, wherein the control module is powered by a 5V power module, the analog front-end module is powered by a ±15V power module, and the DCDC power module provides isolated positive and negative power supplies of different voltage levels for other modules; The analog front-end module is electrically connected to the power amplifier module, and outputs two signals with the same frequency and opposite phases, and transmits them to the power amplifier module; The power amplifier module is electrically connected to the boost transformer module, and is used to linearly amplify the signal without distortion, and feed back the signal. The relay module performs voltage regulation to enhance output linearity; The step-up transformer module is used to bridge and amplify the output signals sent by the two power amplifier modules.

2. The hydroacoustic power amplifier for an ocean acoustic tomography system according to claim 1, characterized in that: The chassis is a detachable assembly structure to facilitate installation and maintenance.

3. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 2, characterized in that: The chassis comprises a front plate, a heat dissipation tooth side plate, a rear plate, an upper cover plate and a lower bottom plate, and the front plate, the heat dissipation tooth side plate, the rear plate, the upper cover plate and the lower bottom plate are fixed by screws.

4. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 3, characterized in that: An indicator light, a radio frequency connector, a waterproof aviation socket and a U-shaped handle are arranged on one side of the front panel.

5. The hydroacoustic power amplifier for an ocean acoustic tomography system according to claim 3 or 4, characterized in that: A spring handle is provided on one side of the heat dissipation tooth side plate for holding, and the occupied space can be reduced by folding.

6. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 5, characterized in that: A chassis foot pad and a heat sink are arranged on one side of the lower base plate to accelerate heat dissipation.

7. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 6, characterized in that: The number of the DCDC power supply modules and the power amplifier modules are two groups respectively, and the number of the 5V power supply modules, ±15V power supply modules, relay modules, communication modules, control modules, analog front-end modules and boost transformer modules are all one group.

8. The hydroacoustic power amplifier for an ocean acoustic tomography system according to claim 7, characterized in that: The DCDC power module is mounted on the lower base plate through a power module pad support, the power module pad is connected to a support plate through hexagonal copper studs and screws, the relay module, the step-up transformer module, the analog front-end module, the ±15V power module, the control module, the communication module, and the 5V power module are all mounted on the support plate, and the power amplifier module is supported by the power amplifier module pad and is side mounted on one side of the two heat dissipation tooth side plates.

9. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 8, characterized in that: The support plate is also provided with a protective resistor for over-current protection and over-temperature protection.

10. The underwater acoustic power amplifier for an ocean acoustic tomography system according to claim 9, characterized in that: Each installation and fitting surface of the front plate, the heat dissipation tooth side plate, the rear plate, the upper cover plate and the lower bottom plate is installed with a round rubber strip.