Underwater phase control transmitting host based on acoustic parametric array and surveying ship

Abstract

The invention provides an underwater phased emission host based on an acoustic parametric array and a surveying vessel, and relates to the technical field of acoustic wave detection, the underwater phased emission host based on the acoustic parametric array comprises a watertight casing, a control extension and a power amplifier assembly; a containing cavity is formed in the watertight machine shell, the watertight machine shell is a heat exchange shell, and a watertight connecting piece is arranged on the watertight machine shell. The control extension set is arranged in the containing cavity; the power amplifier assembly comprises a plurality of power amplifiers, and the plurality of power amplifiers are in communication connection with the control extension set; wherein each power amplifier is provided with at least two power amplifier output ends. The multiple power amplification parts are controlled by the control extension set to be started and stopped, each power amplification part is provided with two power amplification output ends, and the multiple power amplification parts provide enough output ends, so that the output power is improved, the watertight machine shell exchanges heat with water, efficient heat dissipation in the watertight machine shell is achieved, the output power does not need to be reduced to reduce heat, and the power amplification efficiency is improved. And each power amplifier can perform high-power output, so that long-time high-power output is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of acoustic detection, and in particular, to an underwater phased emission host and a survey ship based on an acoustic parametric array. Background Art

[0002] A parametric array utilizes the nonlinear interaction generated when sound waves propagate in a medium, and is generally divided into two categories: a parametric emission array and a parametric reception array. Among them, the principle of the emission array is to simultaneously emit two high-frequency waves with similar frequencies (also known as original frequency waves). Due to the nonlinear interaction, a difference frequency wave and a sum frequency wave are generated, and the parametric emission array utilizes the difference frequency wave.

[0003] In the prior art, an acoustic parametric array is controlled by a phased emission host, so as to control parameters such as the emission signal parameters and waveforms of the acoustic parametric array, and simultaneously realize data transmission with upper computers such as a computer and a display and control platform.

[0004] However, there is a great contradiction between the volume and the transmission power of the current phased emission host. For a transmitter, high-power output can detect a farther distance or increase the communication distance, but to meet the requirement of high-power output, a large number of large-sized high-power devices are often used, which brings serious heat dissipation problems and it is difficult to achieve long-term high-power output. Summary of the Invention

[0005] The purpose of the present invention is to provide an underwater phased emission host based on an acoustic parametric array to alleviate the technical problem that the heat dissipation of a high-power phased emission host in the prior art is poor and it is difficult to achieve long-term high-power output.

[0006] The underwater phased emission host based on an acoustic parametric array provided by the present invention includes: a watertight housing, a control submachine, and a power amplifier component; a containing cavity is provided inside the watertight housing and it is a heat exchange housing, and a watertight connector is provided on the watertight housing; the control submachine is arranged in the containing cavity; the power amplifier component includes a plurality of power amplifier parts, and the plurality of power amplifier parts are all communicatively connected with the control submachine; wherein, each power amplifier part has at least two output terminals.

[0007] Furthermore, a plurality of pins are provided on the control submachine; the pins are used for communicatively connecting with the power amplifier parts, and each pin is used for connecting two of the power amplifier parts.

[0008] Furthermore, the underwater phased emission host based on an acoustic parametric array further includes a power supply module; the input end of the power supply module is connected to a power supply device through the watertight connector, and the power supply module is electrically connected to the control submachine and each of the power amplifier parts respectively.

[0009] Further, the power supply module includes a first module and a second module; the first module and the second module are respectively connected to the watertight connector; the first module and the second module are respectively electrically connected to the control extension and each of the power amplifying components.

[0010] Further, the underwater phased emission host based on the acoustic parametric array further includes a control board; the control board is electrically connected to the power supply module, communicatively connected to the control extension, and communicatively connected to the watertight connector.

[0011] Further, the underwater phased emission host based on the acoustic parametric array further includes an acquisition module; the acquisition module is electrically connected to the power supply module; the acquisition module is communicatively connected to the control extension; the acquisition module includes a depth acquisition part and / or a temperature acquisition part.

[0012] Further, the underwater phased emission host based on the acoustic parametric array further includes a mounting rack; the mounting rack is arranged inside the watertight housing, and a plurality of mounting grooves are arranged at intervals and in parallel on the mounting rack; a plurality of the power amplifying components are inserted into the mounting grooves.

[0013] Further, a extension slot is provided on the mounting rack; the extension slot is arranged on one side of the plurality of mounting grooves, and the extending direction of the extension slot is the same as the setting direction of the plurality of mounting grooves; the control extension is arranged in the extension slot.

[0014] Further, the underwater phased emission host based on the acoustic parametric array further includes heat dissipation components; there are a plurality of heat dissipation components, and the plurality of heat dissipation components are respectively arranged between every two adjacent mounting grooves, and the side wall of the heat dissipation component abuts against the mounting rack, and the end face of one end of the heat dissipation component is in the same plane as the groove wall of the mounting groove.

[0015] The object of the present invention also lies in providing a survey ship, including a hull, a display and control platform, a mounting platform, an acoustic parametric array, a motor and the provided underwater phased emission host based on the acoustic parametric array; the display and control platform is arranged on the hull; the mounting platform is connected to the hull, and the mounting platform has a mounting space; the acoustic parametric array is connected to the mounting platform and a rotating shaft is provided at the connection, and the output end of the acoustic parametric array faces away from the mounting platform; both the motor and the underwater phased emission host based on the acoustic parametric array are arranged in the mounting space, and the watertight connectors of the underwater phased emission host based on the acoustic parametric array are respectively connected to the motor, the acoustic parametric array and the display and control platform in a wired manner, and the motor is in transmission connection with the rotating shaft.

[0016] Beneficial effects:

[0017] The underwater phased emission main machine based on an acoustic parametric array provided by the present invention is disposed underwater. The underwater phased emission main machine based on an acoustic parametric array includes a watertight housing, a control sub-machine, and a power amplifier assembly. The watertight housing has a containing cavity and is a heat exchange housing, and a watertight connector is provided on the watertight housing. The control sub-machine is disposed in the containing cavity. The power amplifier assembly includes a plurality of power amplifier components, and the plurality of power amplifier components are all communicatively connected to the control sub-machine. Each power amplifier component has at least two power amplifier output terminals.

[0018] Specifically, the housing of the underwater phased emission main machine based on an acoustic parametric array provided by the present invention is a watertight housing, which has good waterproof performance and good heat exchange capacity. The plurality of power amplifier components are arranged in the watertight housing and can be connected to a power source through the watertight connector. The control sub-machine is communicatively connected to all the power amplifier components to control the opening and closing of each power amplifier component. When outputting power amplification, each power amplifier component outputs through two power amplifier output terminals, and both of the two power amplifier output terminals include power amplification and matching functions. The plurality of power amplifier components provide a sufficient number of output terminals, thereby increasing the output power. Moreover, due to the presence of the watertight housing in the present invention, the underwater phased emission main machine based on an acoustic parametric array provided by the present invention can be used underwater. The watertight housing can exchange heat between the heat generated by the power amplifier components inside the housing and the water outside the watertight housing, thereby achieving high-efficiency heat dissipation inside the watertight housing. Therefore, the power amplifier components in the present invention do not need to reduce the output power to reduce heat generation, and each power amplifier component can output at a high power, thereby achieving long-term high-power output.

[0019] On the other hand, the measurement ship provided by the present invention includes a hull, a display and control platform, an installation platform, an acoustic parametric array, a motor, and the underwater phased emission main machine based on an acoustic parametric array provided. Among them, the underwater phased emission main machine based on an acoustic parametric array has the above-mentioned advantages compared with the prior art, which will not be elaborated here. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the underwater phased emission main machine based on an acoustic parametric array provided by an embodiment of the present invention;

[0022] Figure 2 It is an internal structural schematic diagram of the control sub-machine in the underwater phased emission main machine based on an acoustic parametric array provided by an embodiment of the present invention Figure 1 ;

[0023] Figure 3 Schematic diagram of the internal structure of the control unit in the underwater phased emission mainframe based on an acoustic parametric array provided by an embodiment of the present invention Figure 2 ;

[0024] Figure 4 Cross-sectional schematic diagram of the installation groove of the control unit in the underwater phased emission mainframe based on an acoustic parametric array provided by an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the survey ship provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 6 Schematic diagram of the structure of the survey ship provided by an embodiment of the present invention Figure 2 。

[0027] Icon:

[0028] 10 - Underwater phased emission mainframe based on an acoustic parametric array; 100 - Watertight housing; 110 - Watertight connector; 120 - Connecting flange; 200 - Control unit; 300 - Power amplifier component; 400 - Mounting rack; 410 - Support column; 420 - Connecting plate; 500 - Heat dissipation component; 600 - Acoustic parametric array; 700 - Installation platform; 800 - Motor. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] To facilitate the understanding of this embodiment, the technical background designed by this application will be further introduced below.

[0036] In the past decade, new breakthroughs have been made in parametric array technology, which has gone through three stages in terms of the improvement of transducer array performance and excitation methods.

[0037] The first stage: Two planar piston transducers are arranged in parallel, and two transducers are respectively excited by f1 and f2 with similar frequencies (both f1 and f2 are pulse waveforms). The sound waves emitted by the two transducers generate non-linear interference in the axial sound field. In addition to the original frequency, sum-frequency and difference-frequency signals are also generated in the sound field. The sum-frequency is greatly absorbed and attenuated, and only the difference-frequency signal remains. This can only work in a single beam. These two transducers do not particularly require broadband characteristics.

[0038] The second stage: Use one transducer and simultaneously excite this one transducer with f1 and f2 with similar frequencies. This one transducer simultaneously emits a particularly strong synthesized sound wave, which generates non-linear interference in the axial sound field, and then sum-frequency and difference-frequency signals are generated in the sound field. The transfer of acoustic energy from the original frequency to the difference frequency is realized. This is also only single-beam operation. The above two are called dual-frequency parametric arrays.

[0039] The third stage: In recent years, the integral expression of the broadband parametric signal of Berktay (note: Berktay, an acoustic expert, published a famous paper on acoustic parametric arrays in 1965, that is, the sound pressure on the acoustic axis of the difference-frequency wave is proportional to the second derivative of the square of the envelope function, which can also be understood as the nonlinear effect of the sound field can demodulate the envelope of the original-frequency wave, and this is called the medium nonlinear self-demodulation effect) has been utilized:

[0040]

[0041] where p is the sound pressure, z is the direction of sound wave propagation, t is the time, f is the expression of the modulation pulse waveform, that is, the envelope of the original frequency, A is the amplitude factor, and c0 is the propagation speed of small-amplitude sound waves in the medium ( is the partial derivative). When such a signal is input into a transducer array with a very wide frequency band, using the nonlinear effect of the medium, the parametric signal generated after reaching a certain distance is also a difference-frequency broadband signal, and this is called a broadband parametric array. The above formula shows that the difference-frequency sound field of the parametric array is the second derivative of the square of the envelope of the original frequency. That is to say, the nonlinear effect of the sound field can demodulate the envelope of the original frequency (in the form of the second derivative of the square), and this is generally called the nonlinear self-demodulation effect of the sound field.

[0042] If such a broadband original wave signal is input to each element, and strong power acoustic radiation with a certain time delay (that is, beam phasing is performed on the original wave signals of each element) is applied respectively. Such an array can simultaneously complete two processes, that is, realizing the transfer of energy to the difference frequency and the beam scanning of the original and difference frequencies, and the efficiency is greatly improved.

[0043] For the parametric array entering the third stage, there is the possibility of realizing phased control and multi-beams. The array has also broken through the new technologies of ultra-high sound source level and ultra-wideband frequency response of the original frequency, and the conversion efficiency has been greatly improved. Only in this way does the parametric array have practical significance and development prospects. This solution is also developed based on such broadband parametric array technology.

[0044] Multi-channel phased emission is achieved through beamforming. Beamforming is a method of making a multi-element array have the required response to certain directions in space by appropriate processing (weighting, delaying, phase shifting, etc.).

[0045] The beamforming technology comes from the principle of the directivity of the array. Suppose a transmitting array composed of N non-directional transducers, and the positions of each array element are (x(n), y(n), z(n)). At a certain point (x, y, z) in space, the signals output by all array elements are summed up to obtain the natural directivity of the array. At this time, at different angles, the transmitted signals are different with the change of angles.

[0046] The content of the present invention will be further described in detail below through specific embodiments in combination with the accompanying drawings.

[0047] Please refer to Figures 1 to 4 , the underwater phased emission mainframe 10 based on the acoustic parametric array provided in this embodiment includes a watertight housing 100, a control sub-unit 200, and a power amplifier component; the watertight housing 100 has a containing cavity and is a heat exchange housing, and a watertight connector 110 is provided on the watertight housing 100; the control sub-unit 200 is arranged in the containing cavity; the power amplifier component includes a plurality of power amplifier units 300, and the plurality of power amplifier units 300 are all communicatively connected to the control sub-unit 200; wherein, each power amplifier unit 300 has at least two output terminals.

[0048] Among them, the watertight housing 100 has good waterproof performance and good heat exchange capacity. The plurality of power amplifier units 300 are arranged in the watertight housing 100 and can be connected to the power supply through the watertight connector 110. The control sub-unit 200 is communicatively connected to all the power amplifier units 300 to control the opening and closing of each power amplifier unit 300. When outputting power amplification, each power amplifier unit 300 outputs through two power amplifier output terminals, and both of the two power amplifier output terminals include power amplification and matching functions. The plurality of power amplifier units 300 provide a sufficient number of output terminals, thereby increasing the output power.

[0049] Moreover, since the watertight housing 100 can exchange heat between the heat generated by the power amplifier unit 300 inside the housing and the water outside the watertight housing 100, high-efficiency heat dissipation inside the watertight housing 100 is achieved. Therefore, the power amplifier unit 300 in the present invention does not need to reduce the output power to reduce heat generation, and each power amplifier unit 300 can output at high power, thereby achieving long-term high-power output.

[0050] Specifically, the watertight housing 100 in this embodiment is a cylindrical housing made of aluminum alloy. The two ends of the cylindrical housing are sealed by two connecting flanges 120 to seal the internal space of the cylindrical housing, and the watertight connector 110 is arranged on the connecting flange 120. The cylindrical body made of aluminum alloy has sufficient strength to prevent the watertight housing 100 from being deformed or damaged under excessive water pressure. At the same time, the aluminum alloy material has excellent thermal conductivity and can efficiently exchange heat with the water outside the watertight housing 100 to avoid heat accumulation inside the watertight housing 100.

[0051] As an implementable manner, the material of the watertight housing 100 can also be made of metal materials with good thermal conductivity such as metal copper and alloy steel.

[0052] It should be noted that the control extension 200 in this embodiment is a digital control extension 200. The digital control extension 200 is the core of the phased transmitter, which solves the problems of remote control and beam phasing. According to the requirements of control and processing capabilities, a system architecture combining DSP (Digital Signal Processing) and FPGA (Field Programmable Gate Array) is designed. Among them, DSP communicates with the upper computer, forwards instructions and data to FPGA, and realizes the control of various parameters of phased transmission. FPGA receives instructions and parameters, controls the output of phased signals of multiple channels, and completes the function detection of each channel. The output of phased signals is realized through DAC (Digital-to-Analog Converter).

[0053] In this embodiment, the control extension 200 is provided with multiple pins; the pins are used for communication connection with the power amplifier component 300, and each pin is used to connect two power amplifier components 300.

[0054] Among them, the control extension 200 in this embodiment realizes communication connection with the power amplifier component 300 through the pins. After each pin is communicatively connected to two power amplifier components 300, the control of four output terminals is realized, and multiple pins can realize the opening and closing of all output terminals. Specifically, the control extension 200 controls the power amplification of each power amplifier component 300 to achieve the power amplification clock synchronization of all power amplifier components 300, that is, the power amplification output is carried out simultaneously. In this embodiment, the frequency of the power amplification clock is 750 kHz (a square wave clock signal of 0 - 3.3V and 50% duty cycle).

[0055] In addition, the pins are also used to realize the power-on control of the control extension 200 over the power amplifier component 300. The specific control method is to turn on the power amplifier with a high level (3.3V) and make the power amplifier standby with a low level (0V).

[0056] It should be noted here that in this embodiment, the number of power amplifier components 300 is sixteen. Correspondingly, there are thirty-two output terminals and eight pins; each pin is connected to two power amplifier components 300, corresponding to four output terminals.

[0057] Furthermore, according to the principle characteristics of the parametric array, to achieve a high difference-frequency sound source level, a higher original-frequency sound source level is required. According to the power estimation in Section 5.4.1, the electric power at a single output terminal needs to reach nearly 330 W. In this embodiment, there are a total of thirty-two output terminals, and the total peak power needs to reach 10 kW. Such a large peak power places a heavy burden on the power supply equipment. Therefore, the design of current-limiting and energy storage technologies for high-power power amplifiers is very crucial. In addition, the phased power amplifier has high requirements for time delay. Therefore, multiple output terminals in this embodiment are synchronously controlled by an external clock through a digital control extension 200 to meet the phase consistency of multiple power amplifiers. For a phased array system, the general form is FPGA + D / A + Class A and B power amplifiers. However, Class A and B power amplifiers have low efficiency, and the system power supply and heat dissipation problems are relatively complex. Therefore, in this embodiment, the output terminal adopts a highly efficient Class D power amplifier (where Class A power amplifier, Class B power amplifier, and Class D power amplifier are different types of power amplifiers). This can not only ensure efficiency and high-power requirements but also enable the output terminal to be designed smaller. Specifically, the output terminal in this embodiment selects the TDA8954 highly efficient Class D power amplifier from NXP. The efficiency is as high as 93%. The power of the single-chip bridge mode reaches 250 W in the frequency band of 20 kHz to 50 kHz. The power amplifier component 300 adopts power combining technology to combine two TDA8954s for application as one channel, ensuring that the single-channel power reaches 500 W, with a certain margin to meet the design requirements. This power amplifier also has a standby power-saving mode and advanced protection strategies such as voltage protection and current protection.

[0058] In this embodiment, the underwater phased emission host 10 based on the acoustic parametric array further includes a power supply module; the input end of the power supply module is connected to a power supply device through a watertight connector 110, and the power supply module is electrically connected to the control extension 200 and each power amplifier component 300 respectively.

[0059] The power supply module is electrically connected to one end of the watertight connector 110, and the other end of the watertight connector 110 is connected to an external power supply device, thereby realizing the power supply to the power supply module. The power supply module is electrically connected to the components in the containing cavity, thereby realizing the power supply to the electrical components in the underwater phased emission host 10 based on the acoustic parametric array.

[0060] Among them, the power supply module in this embodiment includes a first module and a second module; the first module and the second module are respectively connected to the watertight connector 110; the first module and the second module are respectively electrically connected to the control extension 200 and each power amplifier component 300.

[0061] The first module and the second module in this embodiment are respectively connected to the watertight connector 110, so the first module and the second module can both receive the power provided by the external power supply device. On the other hand, after the first module and the second module are respectively electrically connected to the control extension 200 and each power amplifier 300, the first module and the second module can both realize data transmission with the control extension 200 and power each power amplifier 300. Specifically, the first module in this embodiment is a normally open module. In normal use, the first module powers each component. The second module is used as a backup module and is enabled when the first module is damaged or fails to operate, so as to avoid the first module failing to operate.

[0062] Among them, after the power module in this embodiment is connected to each power amplifier 300, when the device is running, the power module controls the startup sequence of each power amplifier 300, so that all power amplifiers 300 are started at the same time, resulting in an instantaneous excessive charging current of the energy storage capacitor.

[0063] In this embodiment, the underwater phased control transmitter host 10 based on acoustic parametric array also includes a control board; the control board is electrically connected to the power module and is communicatively connected to the control extension 200 , and the control board is communicatively connected to the watertight connector 110 .

[0064] In order to facilitate the adjustment of the output direction of the acoustic parameter array 600, a driving device for adjusting the angle is usually provided on the measuring mechanism and connected to the acoustic parameter array 600. After the control panel in this embodiment is connected to the watertight connector 110, it is connected to the driving device for controlling the acoustic parameter array 600 through the watertight connector 110 to achieve control of the output direction of the acoustic parameter array 600.

[0065] In this embodiment, the underwater phased-control transmitter host 10 based on acoustic parametric array also includes an acquisition module; the acquisition module is electrically connected to the power module; the acquisition module is communicatively connected to the control extension 200; the acquisition module includes a depth acquisition unit and a temperature acquisition unit.

[0066] Specifically, in this embodiment, in order to ensure the normal operation of the equipment, the acquisition module arranged in the containing cavity can collect various data of the equipment and transmit the data to the control extension 200. When there is data abnormality, the control extension 200 transmits an alarm signal to an external host computer, such as a computer or a display control platform.

[0067] Among them, in this embodiment, multiple temperature sensors are provided in the containing cavity, and the multiple temperature sensors can measure the temperature at different positions in the containing cavity. When there is a temperature abnormality, the signal is transmitted to the temperature collection part in time, and the alarm signal is transmitted to the external host computer through communication transmission to realize the alarm.

[0068] Moreover, a pressure transmitter is provided on the watertight housing 100 in this embodiment, which can monitor in real time the pressure exerted on the underwater phased emission host 10 based on the acoustic parametric array in water, and transmit the data layer by layer to the host computer, thereby calculating the depth at which the underwater phased emission host 10 based on the acoustic parametric array is located.

[0069] In addition, as an implementable manner, a voltage detection module can also be provided to check the power supply voltage of the main modules, facilitating the slave unit 200 to judge whether the working state is normal.

[0070] In this embodiment, the underwater phased emission host 10 based on the acoustic parametric array further includes a mounting rack 400; the mounting rack 400 is arranged inside the watertight housing 100, and a plurality of mounting grooves are arranged on the mounting rack 400 at intervals and in parallel; a plurality of power amplifier components 300 are inserted into the mounting grooves.

[0071] Specifically, the mounting rack 400 in this embodiment includes four support columns 410 distributed in a rectangle, both ends of the support columns 410 are connected to the two end faces of the cylindrical shell, grooves are provided on all four support columns 410, and the positions of the grooves on each support column 410 are opposite to form mounting grooves.

[0072] Furthermore, the mounting rack 400 further includes a connecting plate 420, the tops of the four support columns are fixed on the same connecting plate 420, the bottoms of the four support columns 410 are fixed on another connecting plate 420, and the two connecting plates 420 are connected to the two end faces of the watertight housing 100 by means of bolts.

[0073] Among them, in this embodiment, the power amplifier component 300, the first module, the second module and the control board are all circuit boards, and the mounting grooves are adapted to the circuit boards so that the circuit boards can be inserted into the mounting grooves.

[0074] Moreover, there are a total of twenty mounting grooves in this embodiment. Among them, sixteen mounting grooves are used to hold the power amplifier components 300, the first module and the second module are respectively arranged in two mounting grooves, and there are two control boards, which are respectively arranged in two mounting grooves.

[0075] In this embodiment, a slot for the slave unit is provided on the mounting rack 400; the slot for the slave unit is arranged on one side of the plurality of mounting grooves, and the extending direction of the slot for the slave unit is the same as the setting direction of the plurality of mounting grooves; the control slave unit 200 is arranged in the slot for the slave unit.

[0076] The control slave unit 200 is in the slot for the slave unit. Since the slot for the slave unit extends along the setting direction of the plurality of mounting grooves, the control slave unit 200 can communicate or be electrically connected with the circuit boards in each mounting groove, that is, connected by data lines or wires, so as to realize data transmission or power transmission to each circuit board.

[0077] In this embodiment, the underwater phased emission host 10 based on an acoustic parametric array further includes a heat dissipation member 500; there are multiple heat dissipation members 500, and the multiple heat dissipation members 500 are respectively arranged between every two adjacent installation grooves, and the side wall of the heat dissipation member 500 abuts against the mounting frame 400, and the end face of one end of the heat dissipation member 500 is in the same plane as the groove wall of the installation groove.

[0078] The heat dissipation member 500 can exchange heat with the circuit board, thereby increasing the heat dissipation area of the circuit board, further increasing the heat dissipation speed of the circuit board, and preventing heat from accumulating on the circuit board, resulting in too high temperatures of the containing cavity and the circuit board.

[0079] Specifically, the heat dissipation member 500 in this embodiment is a heat dissipation plate, and the heat dissipation plate is fastened to the support column 410 by screws. Moreover, the end face of one end of the heat dissipation member 500 is in the same plane as the groove wall of the installation groove. In this structure, when a circuit board is inserted into the installation groove, the end face of the heat dissipation plate abuts against the circuit board on one side thereof, facilitating the heat conduction from the heating plate to the heat dissipation plate.

[0080] Moreover, in this embodiment, multiple heat dissipation plates are arranged between every two adjacent installation grooves to further increase the heat dissipation area of the circuit board.

[0081] The survey ship provided in this embodiment includes a hull, a display and control platform, an installation platform 700, an acoustic parametric array 600, a motor 800, and the provided underwater phased emission host 10 based on an acoustic parametric array; the display and control platform is arranged on the hull; the installation platform 700 is connected to the hull, and the installation platform 700 has an installation space; the acoustic parametric array 600 is connected to the installation platform 700 and a rotating shaft is provided at the connection, and the output end of the acoustic parametric array 600 faces away from the installation platform 700; both the motor 800 and the underwater phased emission host 10 based on an acoustic parametric array are arranged in the installation space, and the watertight connectors 110 of the underwater phased emission host 10 based on an acoustic parametric array are respectively connected to the motor 800, the acoustic parametric array 600, and the display and control platform in a wired manner, and the motor 800 is in transmission connection with the rotating shaft.

[0082] Specifically, the display and control platform in this embodiment is a host computer, and an operator on the hull can control the underwater phased emission host 10 based on an acoustic parametric array through the display and control platform.

[0083] Among them, the underwater phased emission host 10 based on an acoustic parametric array is connected to the display and control platform through a load-bearing cable to ensure a stable connection between the two.

[0084] And, referring to Figure 5, in this embodiment, the installation platform 700 can be connected to the hull through a connecting rod. In this structure, the connecting rod needs to be located at the top of the installation platform 700. For the convenience of installing the acoustic parametric array 600, the acoustic parametric array 600 is arranged below the installation platform 700, and the output direction of the acoustic parametric array 600 is downward.

[0085] As an implementable way, refer to Figure 6 , the installation platform 700 can be connected to the hull through a wire body such as a cable or a load-bearing cable. In this structure, to fix the position of the acoustic parametric array 600, the installation platform 700 needs to be sunk to the bottom of the water. The acoustic parametric array 600 is arranged above the installation platform 700, and the output direction of the acoustic parametric array 600 is upward.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An underwater phased emission mainframe based on an acoustic parametric array, characterized in that, Located underwater, the underwater phased emission host based on an acoustic parametric array includes: a watertight housing (100), a control extension (200), and a power amplifier assembly; The watertight housing (100) has a containing cavity and is a heat exchange housing, and a watertight connector (110) is provided on the watertight housing (100); The control extension (200) is arranged in the containing cavity; The power amplifier assembly includes a plurality of power amplifier components (300), and the plurality of power amplifier components (300) are all communicatively connected to the control extension (200); Wherein, each power amplifier component (300) has at least two output terminals.

2. The underwater phased emission mainframe based on an acoustic parametric array according to claim 1, characterized in that, A plurality of pins are provided on the control extension (200); The pins are used for communicatively connecting with the power amplifier components (300), and each pin is used for connecting two of the power amplifier components (300).

3. The underwater phased emission mainframe based on an acoustic parametric array according to claim 1, wherein The underwater phased emission host based on an acoustic parametric array further includes a power supply module; The input end of the power supply module is connected to a power supply device through the watertight connector (110), and the power supply module is electrically connected to the control extension (200) and each of the power amplifier components (300) respectively.

4. The underwater phased emission mainframe based on an acoustic parametric array according to claim 3, wherein The power supply module includes a first module and a second module; The first module and the second module are respectively connected to the watertight connector (110); The first module and the second module are respectively electrically connected to the control extension (200) and each of the power amplifier components (300).

5. The underwater phased emission host based on an acoustic parametric array according to claim 3, characterized in that, The underwater phased emission host based on an acoustic parametric array further includes a control board; The control board is electrically connected to the power supply module, communicatively connected to the control extension (200), and communicatively connected to the watertight connector (110).

6. The underwater phased emission main engine based on an acoustic parametric array according to claim 3, wherein, The underwater phased emission host based on an acoustic parametric array further includes an acquisition module; The acquisition module is electrically connected to the power supply module; The acquisition module is communicatively connected to the control extension (200); The acquisition module includes a depth acquisition part and / or a temperature acquisition part.

7. The underwater phased emission mainframe based on an acoustic parametric array according to claim 1, characterized in that, The underwater phased emission host based on an acoustic parametric array further includes a mounting bracket (400); The mounting bracket (400) is arranged in the watertight housing (100), and a plurality of mounting grooves are arranged at intervals and in parallel on the mounting bracket (400); The plurality of power amplifier components (300) are inserted into the mounting grooves.

8. The underwater phased emission main engine based on an acoustic parametric array according to claim 7, characterized in that A extension slot is provided on the mounting bracket (400); The extension slot is arranged on one side of the plurality of mounting grooves, and the extending direction of the extension slot is the same as the setting direction of the plurality of mounting grooves; The control extension (200) is arranged in the extension slot.

9. The underwater phased emission main machine based on an acoustic parametric array according to claim 7, characterized in that, The underwater phased emission host based on an acoustic parametric array further includes a heat dissipation component (500); There are a plurality of heat dissipation components (500), and the plurality of heat dissipation components (500) are respectively arranged between every two adjacent mounting grooves, and the side wall of the heat dissipation component (500) abuts against the mounting bracket (400), and the end face of one end of the heat dissipation component (500) is in the same plane as the groove wall of the mounting groove.

10. A survey ship, characterized in that, Including: A hull, a display and control platform, an installation platform (700), an acoustic parametric array (600), a motor (800), and an underwater phased emission host (10) based on an acoustic parametric array according to any one of claims 1-9; The display and control platform is arranged on the hull; The installation platform (700) is connected to the hull, and the installation platform (700) has an installation space; The acoustic parametric array (600) is connected to the installation platform (700), a rotating shaft is provided at the connection, and the output end of the acoustic parametric array (600) faces away from the installation platform (700); Both the motor and the underwater phased emission host (10) based on an acoustic parametric array are arranged in the installation space. The watertight connectors (110) of the underwater phased emission host (10) based on an acoustic parametric array are respectively connected to the motor, the acoustic parametric array (600), and the display and control platform in a wired manner, and the motor is in transmission connection with the rotating shaft.

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