CN115597694A - Parametric array sound source equipment, system and control method - Google Patents

Abstract

The invention provides parametric array sound source equipment, a system and a control method, and relates to the technical field of parametric array sound sources, wherein the parametric array sound source equipment converts electric energy into sound energy through a built-in parametric acoustic array, and finally radiates an energy signal; the phase control emission host machine realizes the functions of remote control, data transmission, signal delay control, signal emission and the like, and can receive attitude data so as to facilitate the user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirement of a laboratory is met, and the control method can be applied to the practical scene of submarine work.

Description

Parametric array sound source equipment, system and control method

Technical Field

The invention relates to the technical field of parametric array sound sources, in particular to a parametric array sound source device, a parametric array sound source system and a parametric array sound source control method.

Background

Parametric arrays are generally classified into two types, a parametric transmit array and a parametric receive array, by using nonlinear interaction generated when sound waves propagate in a medium. The project researches a parametric emission array, for example, an emitter simultaneously emits two high-frequency waves (also called primary frequency waves) with similar frequencies, difference frequency waves and sum frequency waves are generated due to nonlinear interaction, and the parametric emission array utilizes the difference frequency waves. The parametric array can realize low-frequency narrow beams under small aperture, has no side lobe, is easy to realize high-bandwidth and other characteristics, and is widely applied.

From the parametric array theory development to the present, a great deal of research on the parametric array theory is carried out, and the research results are mainly applied to the analysis of the bottom stratum profile. However, it has not been applied to underwater acoustic communication and underwater acoustic countermeasure, one reason for which is that the difference frequency waveform generated by the parametric array cannot be actively controlled. Although people know the self-demodulation effect of the parametric array under the nonlinear action, the research on some original waves with simple envelope signals has been carried out so far, and the control on the waveform of the parametric array difference frequency wave cannot be achieved.

Disclosure of Invention

In view of this, the present invention provides a parametric array sound source device, a system and a control method, where the parametric array sound source device converts electrical energy into sound energy through a built-in parametric acoustic array, and finally radiates the energy signal; the phase control transmitting host realizes the functions of remote control, data transmission, signal delay control, signal transmission and the like, and can receive attitude data so as to facilitate a user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirements of a laboratory are met, and the parametric array difference frequency wave control method can be applied to practical scenes of seabed work.

In a first aspect, an embodiment of the present invention provides a parametric array sound source device, including: the system comprises a phased emission host, a parametric acoustic array and an upper computer unit; the parametric acoustic array port of the phased emission host is connected with the parametric acoustic array through an emission cable; an upper computer port of the phase control emission host is connected with an upper computer unit through a bearing cable;

the phased transmitting host is used for receiving a control command transmitted from the upper computer unit and controlling a parametric signal of the parametric acoustic array according to the control command; the power supply is also used for receiving the electric energy transmitted from the upper computer unit;

the parametric acoustic array is used for converting the electric energy into acoustic energy according to the parametric signal and transmitting the acoustic wave corresponding to the acoustic energy according to the parametric signal;

the upper computer unit is used for generating and sending a control instruction to the phase control emission host; wherein the control instruction at least comprises: parameter setting instructions, control execution instructions, state display instructions, signal setting instructions and beam direction setting instructions.

In some embodiments, a phase-controlled transmitting host comprises: the system comprises a digital control extension, a power management unit and a channel matching unit; the digital control extension is connected with a control port of the channel matching unit through a first control port; the digital control extension is connected with a control port of the power management unit through a second control port; a first power supply port of the power supply management unit is connected with a power supply port of the digital control extension; the second power supply port of the power management unit is connected with the power supply port of the channel matching unit;

the parametric acoustic array port is arranged on the power management unit, and the power management unit supplies power to the digital control extension through the first power supply port; the power management unit also supplies power to the channel matching unit through a second power supply port;

the digital control extension generates a transmitting instruction of the parametric acoustic array according to a control instruction transmitted to the channel matching unit by the first control port; the digital control extension also interacts with a control instruction of the upper computer unit through a second control port and a parametric acoustic array port;

the channel matching unit comprises a multi-channel power amplifier matching circuit, and the multi-channel power amplifier matching circuit transmits the transmitting instruction transmitted by the first control port to the parametric acoustic array.

In some embodiments, the phase-controlled transmitting host further comprises: a watertight electronic compartment; the watertight electronic cabin is a cylindrical watertight shell;

20 groove positions which are adjacent in sequence are arranged in the watertight electronic cabin; the slot position is arranged on one side of the bottom plate; wherein, the 1 st to 16 th slot positions are used for placing the channel matching unit; the 17 th to 20 th slot positions are used for placing a power management unit; and a digital control extension is arranged on the other side of the bottom plate.

In some embodiments, the channel matching unit is a 32-channel transmitter; the 32-channel transmitter is arranged in 16 slot positions, each slot position comprises a 2-channel power amplifier matching circuit, each power amplifier matching circuit comprises a power amplifier matching circuit and a matching circuit, and the electric power of each power amplifier matching circuit is 330W.

In some embodiments, the power management unit comprises at least: a first transmitter power supply, a second transmitter power supply, a third transmitter power supply, and a fourth transmitter power supply; further comprising: the device comprises a first motor power supply, a second motor power supply, a standby power supply and a voltage conversion module;

the first transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 1-8 channel transmitter;

the second transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 9-to-16-channel transmitter;

the third transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 17-to-24-channel transmitter;

the fourth transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 25-32 channel transmitter;

the first motor power supply is used for providing a first motor power supply interface of 24V and 7A;

the second motor power supply is used for providing a second motor power supply interface of 24V and 7A;

the standby power supply is used for providing a 24V and 2A standby power supply interface, and the voltage conversion module is a DC-DC module and/or a DC-LDO module.

In some embodiments, the power amplifier matching circuit comprises; a first amplifier and a second amplifier; the first amplifier and the second amplifier are both class D audio power amplifiers TDA8954; and combining the first amplifier and the second amplifier into an output channel which is used as the output end of the power amplifier matching circuit.

In some embodiments, a parametric acoustic array comprises: a horizontal array and a vertical array;

wherein, the horizontal matrix is a linear array with evenly spaced and densely arranged elements, and comprises 32 elements arranged at equal intervals; the distance between the elements is 22.3mm, and the horizontal beam opening angle is 2.6 degrees;

the vertical array is a linear array with non-phased wave beams and comprises 26 oscillators arranged at equal intervals; the vertical beam opening angle of the element is 3.2 deg..

In some embodiments, the upper computer unit comprises: the system comprises a deck unit, a display control platform and power supply equipment; the deck unit is connected with the phase control transmitting host and used for sending a control command; the display control platform is connected with the deck unit and used for generating a control command; the power supply equipment is connected with the deck unit and used for supplying electric energy.

In a second aspect, an embodiment of the present invention provides a parametric array sound source system, including: the system comprises a display control platform, a bearing platform, a motor and parametric array sound source equipment;

the display control platform is arranged on the water surface, and the bearing platform, the motor and the parametric array sound source equipment are arranged below the water surface; the parametric array sound source device is the parametric array sound source device mentioned in the first aspect, and includes: the system comprises a phased transmitting host, a parametric acoustic array and an upper computer unit; the phase control emission host and the motor are fixed in the bearing platform; the upper computer unit is arranged on the display control platform; the phased transmitting host is connected with the parametric acoustic array through a transmitting cable; the phase control emission host is connected with the upper computer unit through a bearing cable.

In a third aspect, an embodiment of the present invention further provides a method for controlling a parametric array sound source system, where the method is applied to the parametric array sound source system mentioned in the second aspect, and the method includes:

electrifying the initialized parametric array sound source system;

generating a control instruction by using a transmitting signal instruction and a transmitting beam angle set by a display control platform, and sending the control instruction to a phase control transmitting host;

the control phase control emission host receives the control instruction, determines an electric signal to be emitted according to the control instruction, and determines a signal time delay result of each channel calculated by the emission beam angle as a parameter signal;

the parametric acoustic array is controlled by the parametric signal to convert the electric signal to be transmitted into acoustic energy, and the working state of the parametric array sound source equipment is monitored in real time by the display control platform.

In a fourth aspect, an embodiment of the present invention further provides an electronic device, including: a processor and a memory; the memory has stored thereon a computer program which, when executed by the processor, implements the steps of the control method of the parametric array sound source system mentioned in the third aspect above.

In a fifth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the control method for a parametric array sound source system mentioned in the third aspect.

The embodiment of the invention brings the following beneficial effects:

the invention provides a parametric array sound source device, a system and a control method, wherein the parametric array sound source device comprises: the system comprises a phased emission host, a parametric acoustic array and an upper computer unit; the parametric acoustic array port of the phased transmitting host is connected with the parametric acoustic array through a transmitting cable; an upper computer port of the phase control emission host is connected with an upper computer unit through a bearing cable; the phased transmitting host is used for receiving a control command transmitted from the upper computer unit and controlling a parametric signal of the parametric acoustic array according to the control command; the power supply is also used for receiving the electric energy transmitted from the upper computer unit; the parametric acoustic array is used for converting the electric energy into acoustic energy according to the parametric signal and transmitting the acoustic wave corresponding to the acoustic energy according to the parametric signal; the upper computer unit is used for generating and sending a control instruction to the phase control emission host; wherein, the control command at least comprises: parameter setting instructions, control execution instructions, state display instructions, signal setting instructions and beam direction setting instructions. The parametric array sound source equipment converts electric energy into sound energy through a built-in parametric acoustic array, and finally radiates an energy signal; the phase control transmitting host realizes the functions of remote control, data transmission, signal delay control, signal transmission and the like, and can receive attitude data so as to facilitate a user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirements of a laboratory are met, and the parametric array difference frequency wave control method can be applied to practical scenes of seabed work.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention as set forth above.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a parametric array sound source device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a phased transmitting host in a parametric array acoustic source device according to an embodiment of the present invention;

fig. 3 is an internal layout diagram of a phased transmitting host in a parametric array sound source device according to an embodiment of the present invention;

FIG. 4 is an internal structural diagram of a watertight electronic cabin in a parametric array sound source device according to an embodiment of the present invention;

FIG. 5 is an external structural view of a watertight electronic cabin in a parametric array sound source device according to an embodiment of the present invention;

fig. 6 is a power amplifier block diagram of a power amplifier matching circuit in parametric array sound source equipment according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a power management unit in a parametric array sound source device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a parametric acoustic array in a parametric array acoustic source device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an upper computer unit in a parametric array sound source device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another parametric array sound source device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a parametric array sound source system according to an embodiment of the present invention;

fig. 12 is a flowchart of a control method for a parametric array sound source system according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Icon:

100-phase control emission host; 200-parametric acoustic array; 300-an upper computer unit;

110-a digital control extension; 120-a power management unit; 130-channel matching unit;

121-first transmitter power supply; 122-a second transmitter power supply; 123-a third transmitter power supply; 124-a fourth transmitter power supply; 125-a first motor power supply; 126-second motor power supply; 127-a backup power supply; 128-voltage conversion module;

310-a deck unit; 320-a display and control platform; 330-a power supply device;

101-a processor; 102-a memory; 103-a bus; 104-communication interface.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The parametric array is a nonlinear interaction generated when sound waves propagate in a medium, and is generally divided into a parametric transmitting array and a parametric receiving array. The project researches a parametric emission array, for example, an emitter simultaneously emits two high-frequency waves (also called primary frequency waves) with similar frequencies, difference frequency waves and sum frequency waves are generated due to nonlinear interaction, and the parametric emission array utilizes the difference frequency waves. The parametric array can realize low-frequency narrow beams under small aperture, has no side lobe, is easy to realize high-bandwidth and other characteristics, and is widely applied. Aiming at the problems of parametric array sound source equipment in the prior art, the embodiment of the invention provides the parametric array sound source equipment, a system and a control method, wherein the parametric array sound source equipment converts electric energy into sound energy through a built-in parametric acoustic array and finally radiates an energy signal; the phase control transmitting host realizes the functions of remote control, data transmission, signal delay control, signal transmission and the like, and can receive attitude data so as to facilitate a user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirement of a laboratory is met, and the control method can be applied to the practical scene of submarine work.

To facilitate understanding of the present embodiment, first, a parametric array sound source device disclosed in the embodiment of the present invention is described in detail, and a schematic structural diagram of the parametric array sound source device is shown in fig. 1, where the parametric array sound source device includes: the system comprises a phased transmitting host 100, a parametric acoustic array 200 and an upper computer unit 300; wherein, a parametric acoustic array port of the phased transmitting host 100 is connected with the parametric acoustic array 200 through a transmitting cable; the upper computer port of the phased transmitting host 100 is connected to the upper computer unit 300 through a bearing cable.

The phased transmitting host 100 is configured to receive a control instruction transmitted from the upper computer unit 300, and control a parametric signal of the parametric acoustic array 200 according to the control instruction; the phase control transmitting host 100 is also used to receive power transmitted from the upper computer unit 300. The parametric acoustic array 200 is configured to convert the electric energy into acoustic energy according to the parametric signal, and transmit the acoustic wave corresponding to the acoustic energy according to the parametric signal. The upper computer unit 300 is used for generating and sending a control instruction to the phase control transmitting host 100; wherein the control instruction at least comprises: parameter setting instructions, control execution instructions, state display instructions, signal setting instructions and beam direction setting instructions.

According to the parametric array sound source equipment provided by the embodiment, the parametric array sound source equipment converts electric energy into sound energy through a built-in parametric acoustic array, and finally radiates an energy signal; the phase control emission host machine realizes the functions of remote control, data transmission, signal delay control, signal emission and the like, and can receive attitude data so as to facilitate the user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirement of a laboratory is met, and the control method can be applied to the practical scene of submarine work.

As shown in fig. 2, in some embodiments, the phase-controlled transmitting master 100 includes: the system comprises a digital control extension 110, a power management unit 120 and a channel matching unit 130; the digital control extension 110 is connected with a control port of the channel matching unit 130 through a first control port; the digital control extension 110 is connected with the control port of the power management unit 120 through a second control port; a first power supply port of the power management unit 120 is connected with a power supply port of the digital control extension 110; the second power supply port of the power management unit 120 is connected to the power supply port of the channel matching unit 130.

A parametric acoustic array port of the phased transmitting host 100 is arranged in the power management unit 120, and the power management unit 120 supplies power to the digital control extension 110 through a first power supply port; the power management unit 120 also supplies power to the channel matching unit 130 through the second power supply port. The digital control extension 110 generates a transmitting instruction of the parametric acoustic array 200 according to a control instruction transmitted from the first control port to the channel matching unit 130; the digital control extension 110 also interacts with the control instruction of the upper computer unit 300 through a second control port and a parametric acoustic array port; the channel matching unit 130 includes a multi-channel power amplifier matching circuit, and the multi-channel power amplifier matching circuit transmits the transmission instruction transmitted by the first control port to the parametric acoustic array 200.

In an actual scene, the phase control emission host function can realize remote power supply of AC220V, and can realize communication with an upper computer unit, and the functions comprise emission signal parameter setting, waveform setting, beam rotation angle setting, motor control, real-time state parameter returning, self-checking and the like. Meanwhile, the system can realize various controls such as remote synchronous control, generation of parameter signals, transmission delay control, transmitter control and the like, and has the functions of attitude, depth and temperature acquisition; in some parametric array sound source systems with motors, the motors can be controlled for power supply and communication.

In some embodiments, the internal layout of the phased transmitting master 100 is shown in fig. 3, and further includes: a watertight electronic compartment; the watertight electronic cabin is a cylindrical watertight shell, and 20 sequentially adjacent groove positions are arranged in the watertight electronic cabin and respectively correspond to the numbers 1 to 20 in the figure 3. Wherein, the 20 slot positions are all arranged at one side of the bottom plate 21; wherein, the 1 st to 16 th slot positions are used for placing the channel matching unit; the 17 th to 20 th slot positions are used for placing a power management unit; the other side of the bottom plate is provided with a digital control extension. Specifically, the phased-launch main unit 100 uses a cylindrical watertight housing, and internal circuit boards are inserted layer by layer in a plug board manner on a unified bottom board, and 20 slot positions and 20 circuit boards are reserved in total. In order to make full use of the space, the back of the bottom plate can be buckled with a circuit board.

The design of the phase-control transmitting host machine requires the volume as small as possible and the weight as light as possible, and simultaneously requires the design of non-magnetic materials. Therefore, the interior of the phase-control emission host adopts a compact structural design, and the space is fully utilized on the basis of not influencing heat dissipation. The outer shell is made of aluminum alloy and necessary anti-corrosion measures are taken to meet the design requirements. Specifically, the internal structure of the watertight electronic compartment is shown in fig. 4, and the external structure is shown in fig. 5.

The digital control extension 110 is the heart of the whole phase control transmitting host, and the work of each extension is controlled and managed by the digital control extension 110, specifically the position 22 in fig. 3, and the digital control extension 110 is the core of the phase control transmitter, and solves the problems of remote control and beam phase control. And designing a system architecture based on the combination of the DSP and the FPGA according to the requirements of control and processing capacity. The DSP is communicated with an upper computer, and transmits instructions and data to the FPGA, so that parameter control of phase control transmission, information transmission of a motor, acquisition of attitude and pressure data and the like are realized. The FPGA receives instructions and parameters, controls the output of phase control signals of a plurality of channels and completes the function detection of each channel, and the output of the phase control signals is realized through the DAC. And the attitude sensor is used for transmitting the attitude information of the underwater platform back in real time. The pressure sensor is used for measuring the depth of the underwater platform.

Specifically, the main functions of the digital control extension include:

(1) The communication with the upper computer is realized through power line network communication (the communication distance is 500 m). The communication content mainly comprises the parameters of the transmitted signal, the waveform setting, the control of the transmitted beam angle, the return of state data, the control communication of a motor and the like;

(2) Synchronous trigger control is carried out between the intelligent control device and an upper computer, and the intelligent control device is realized through power line serial port communication (the communication distance is 500 m);

(3) Generating a parametric transmit signal;

(4) When the beam angle deflects, calculating the time delay of 32 paths of parameter transmitting signals;

(5) Controlling a transmitter, reserving 8 GPIO pins for power amplification external clock signals for 32 paths of power amplification clock synchronization, and 1 pin for 4 paths of power amplification, wherein 8 pins are required to output consistent clocks, and the temporary clock frequency is 750kHz (0-3.3V, square wave clock signals with 50% duty ratio); reserving 8 GPIO pins for power amplifier standby starting control, wherein 1 pin is used for 4 paths of power amplifiers, the power amplifiers are started at a high level (3.3V), and the power amplifiers are standby at a low level (0V);

(6) Inputting transmitter parameter signals, wherein the transmitter parameter signals are input through 32 paths of D/A, and the maximum input signal amplitude is 2Vpp;

(7) Receiving attitude data, and temporarily setting the attitude data as an RS422 or RS485 interface;

(8) And (3) deep acquisition, namely changing current into voltage by adopting a keller 21Y-type pressure transmitter and changing the gauge pressure, the current type and the measuring range to be 0-10 bar (100 m), and realizing the deep information acquisition by voltage acquisition. Uploading through self-checking or monitoring in real time;

(9) Temperature acquisition, namely, advising to leave a plurality of temperature acquisition points in the phase-controlled transmitting host to monitor the temperature in the cabin and give an alarm if necessary;

(10) Voltage detection, namely, the power supply voltage of the main module is checked, so that whether the working state is normal or not can be conveniently judged by a system;

(11) And power supply control, which prevents the power amplifier power supply from being started simultaneously when the power amplifier is started, and increases the sequential electrifying function of the four power supplies of the power amplifier to solve the problem of instantaneous overlarge charging current of the energy storage capacitor. The power supply of the two motors is controlled (reserved) to determine whether to control the motors to be determined;

(12) The underwater test platform is provided with two motors, and the motor power supply and communication cables are connected to the phase control emission host machine through 1 watertight connector. The single-path power supply of the motor is 24V @7A, and the communication is RS232. The motor control is issued by an upper computer, a communication protocol of the motor control is transmitted, and the motor control is forwarded after being analyzed by a digital control extension;

(13) And (4) water leakage alarm function.

In some embodiments, the channel matching unit 130 is a 32-channel transmitter; the 32-channel transmitter is arranged in 16 slot positions, each slot position comprises a 2-channel power amplifier matching circuit, each power amplifier matching circuit comprises a power amplifier matching circuit and a matching circuit, and the electric power of each power amplifier matching circuit is 330W. Specifically, fig. 3 shows 1-16 are 32-channel transmitters, and each board has 2 channels of transmission, including power amplification and matching, as with 16 boards. According to the principle characteristic of a parametric array, the high difference frequency sound source level is required to be achieved, the original frequency sound source level is required to be higher, the electric power of a single channel is required to be close to 330W, and the total peak power of 32 channels of the system is required to be up to 10kW. The peak power is more burdened to the power supply equipment, so the design of the current limiting and energy storage technology of the high-power amplifier is very critical. In addition, the phase-controlled power amplifier has high requirement on time delay, so that the multi-path power amplifiers are uniformly and synchronously controlled by an external clock to meet the phase consistency of the multi-path power amplifiers.

In some embodiments, the power amplifier matching circuit comprises; a first amplifier and a second amplifier; the first amplifier and the second amplifier are both class D audio power amplifiers TDA8954; and combining the first amplifier and the second amplifier into an output channel which is used as the output end of the power amplifier matching circuit. For a phased array system, the general form is FPGA + D/A + A and B power amplifiers, but the A and B power amplifiers have low efficiency, and the problems of power supply and heat dissipation of the system are relatively complex, so that the system adopts the high-efficiency D power amplifier, the requirements of efficiency and high power can be met, and the size of the power amplifier can be designed to be smaller. The TDA8954 high-efficiency D type power amplifier of Enzhipu (NXP) company is selected for the design of the system power amplifier, the efficiency is up to 93%, the power of a single-chip bridging mode in a 20 kHz-50 kHz frequency band reaches 250W, the system adopts a power synthesis technology, two TDA8954 are synthesized and applied into one channel, the single-channel power is ensured to reach 500W, and certain redundancy is provided for meeting the design requirements. The power amplifier also has a standby power-saving mode and advanced protection strategies such as voltage protection, current protection and the like, and the power amplifier block diagram of the power amplifier matching circuit is specifically shown in fig. 6.

Specifically, the main design technical indexes of the power amplifier are as follows: the working frequency range is as follows: 20 kHz-50 kHz; input signal voltage: 0Vpp to 2Vpp; output signal amplitude uniformity: 2dB (without matching inductance, 100 ohm pure resistance); single-channel output power: the maximum power is not lower than 450W (100 ohm pure resistance, under the condition of 40 kHz); 32-channel simultaneous operation power supply: less than or equal to 1800W; startup charging preparation time: less than 20s; signal emission period: a minimum of 5s; signal emission pulse width: maximum 10ms; requiring signal isolation of analog input signals, control signals and clock signals; the power amplifier has the functions of overcurrent, overheat, overvoltage and undervoltage protection; 2 channels per board.

In some embodiments, the power management unit 120, as shown in fig. 7, includes at least: a first transmitter power supply 121, a second transmitter power supply 122, a third transmitter power supply 123, a fourth transmitter power supply 124; further comprising: a first motor power supply 125, a second motor power supply 126, a backup power supply 127, and a voltage conversion module 128; the first transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 1-8 channel transmitter; the second transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 9-to-16-channel transmitter; the third transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 17-to-24-channel transmitter; the fourth transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 25-32 channel transmitter; the first motor power supply is used for providing a first motor power supply interface of 24V and 7A; the second motor power supply is used for providing a second motor power supply interface of 24V and 7A; the standby power supply is used for providing a 24V and 2A standby power supply interface, and the voltage conversion module is a DC-DC module and/or a DC-LDO module.

The power management unit 120 meets the power supply requirement of each module of the integral phase-control transmitting extension, and partial module power of the power management unit 120 is controlled by the digital control extension to play the roles of energy saving and power saving. Besides the above functions, the power management unit 120 also has another important function of providing up to 10kW of instantaneous power for the power amplifier, which cannot be borne by ordinary power supply equipment with such high power, and can design a working mode for pulse transmission, add the design of current-limiting protection and energy storage circuit, effectively solve the requirement of instantaneous high-power transmission, and control the requirement of the system on external power supply within 2000 kW.

In some embodiments, the parametric acoustic array 200 is a key core component of the parametric array sonar, and mainly realizes energy conversion from an electric signal to an acoustic signal. The structure design and the vibrator technology are complex, the required power capacity is high, the conversion efficiency is high, and the heat dissipation is good. The design of the acoustic array needs to ensure the high original frequency sound source level and the ultra-wide original frequency bandwidth so as to improve the difference frequency wave sound source level.

The energy converter of the parametric acoustic array 200 is made of high-power piezoelectric materials and the composition thereof, and the power capacity of the energy converter is improved so as to achieve the ultra-high-intensity sound source level; the parametric acoustic array 200 adopts a design method and a process means of ultra wide band frequency response to improve the limitation of super strong vibration; the parametric acoustic array 200 increases the radiating area by narrow beam phased design and fabrication.

The schematic structural diagram of the parametric acoustic array 200 is shown in fig. 8, and includes: a horizontal array and a vertical array; wherein, the horizontal matrix is a linear array with evenly spaced and densely arranged elements, and comprises 32 elements arranged at equal intervals; the distance between the elements is 22.3mm, and the horizontal beam opening angle is 2.6 degrees; the vertical array is a linear array with non-phased wave beams and comprises 26 oscillators arranged at equal intervals; the vertical beam opening angle of the element is 3.2 deg..

Specifically, the design of the acoustic parametric array 200 adopts a multi-element array forming technology, that is: the method is characterized in that a multi-element transducer array of an ultra-wide band is used, low-frequency amplitude modulated high-frequency (primary frequency) signals (equivalent to f1 and f2 synthetic signals with similar frequencies) are applied to elements respectively, the primary wave signals of the elements are subjected to beam phase control time delay, strong-power acoustic radiation is implemented, and therefore energy transfer and beam scanning of difference frequency are achieved, and conversion efficiency is improved. In the embodiment, the parametric array consists of 32 densely arranged basic arrays so as to increase the radiation area; the parametric array matrix adopts a plurality of elements which are densely arranged at equal intervals in the horizontal direction, and the elements adopt a continuous linear array with a plurality of oscillators which are distributed at equal intervals in the vertical direction.

In some embodiments, as shown in fig. 9, the upper computer unit 300 includes: the deck unit 310, the display and control platform 320 and the power supply equipment 330; the deck unit 310 is connected with the phase control transmitting host and used for sending control instructions; the display and control platform 320 is connected with the deck unit 310 and used for generating a control command; the power supply device 330 is connected to the deck unit 310 for supplying power.

In combination with the technical features of the above embodiments, reference may be made to a schematic structural diagram of another parametric array sound source device described in fig. 10. Through the parametric array sound source device provided by the embodiment, the electric energy is converted into sound energy through the built-in parametric acoustic array, and finally, an energy signal is radiated; the phase control transmitting host realizes the functions of remote control, data transmission, signal delay control, signal transmission and the like, and can receive attitude data so as to facilitate a user to monitor the attitude information of the equipment; the upper computer unit is mainly responsible for generating and sending related control instructions such as a parameter setting instruction, a control execution instruction, a state display instruction, a signal setting instruction, a wave beam direction setting instruction and the like, so that the control of the parametric array sound source equipment on the parametric array difference frequency wave waveform is realized, the working requirement of a laboratory is met, and the control method can be applied to the practical scene of submarine work.

An embodiment of the present invention further provides a parametric array sound source system, as shown in fig. 11, including: the system comprises a display control platform, a bearing platform, a motor and parametric array sound source equipment; the display control platform is arranged on the water surface, and the bearing platform, the motor and the parametric array sound source equipment are arranged below the water surface; the parametric array sound source device is the parametric array sound source device mentioned in the first aspect, and includes: the system comprises a phased emission host, a parametric acoustic array and an upper computer unit; the phase control emission host and the motor are fixed in the bearing platform; the upper computer unit is arranged on the display control platform; the phased transmitting host is connected with the parametric acoustic array through a transmitting cable; the phase control emission host is connected with the upper computer unit through a bearing cable.

The working principle of the parametric array sound source system mainly comprises two applications, namely the application of installation and measurement of a water surface ship during measurement of the scattering characteristics of the sea bottom and the application of bottom-sitting measurement during measurement of the scattering characteristics of the sea surface. The topside suspension type shown in fig. 11 can be utilized for the installation and measurement of a surface vessel during the measurement of the scattering characteristics of the seabed; the sitting posture shown in fig. 11 can be utilized for the sitting posture measurement at the time of sea surface scattering property measurement.

The phased transmitting host, the acoustic parametric array and the motor are fixed on a bearing platform in the water surface vessel installation and measurement application, the bearing platform is reversely installed and fixedly connected, the whole shipboard crane is put into water, and the transmitting control is carried out by a display and control platform on a measuring vessel. The bearing platform in the application of the sitting bottom measurement is integrally lifted into water by the bearing cable, the display control platform on the measuring ship carries out emission control after the sitting bottom, and the platform is recovered through the bearing cable.

The parametric array sound source device provided by the embodiment of the invention has the same technical characteristics as the parametric array sound source device provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved. For the sake of brevity, where not mentioned in the section of the embodiments, reference may be made to the corresponding matters in the foregoing embodiments.

An embodiment of the present invention further provides a method for controlling a parametric array sound source system, where the method is applied to the parametric array sound source system mentioned in the foregoing embodiment, and as shown in fig. 12, the method includes:

step S101, electrifying the initialized parametric array sound source system;

step S102, generating a control instruction by using a transmitting signal instruction and a transmitting beam angle set by a display control platform, and sending the control instruction to a phase control transmitting host;

step S103, the phase control emission host receives the control instruction, determines an electric signal to be emitted according to the control instruction, and determines the time delay result of each channel signal calculated by the emission beam angle as a parameter signal;

and step S104, controlling the parametric acoustic array by using the parametric signal to convert the electric signal to be transmitted into acoustic energy, and monitoring the working state of the parametric array sound source equipment in real time by using the display control platform.

Specifically, the parametric array sound source system is powered on after being connected, a display control platform is used for setting a transmitting signal form and a transmitting beam angle, a phased transmitting host receives data of the display control platform, generates signals to be transmitted, calculates time delay of each channel signal according to the beam angle, outputs the signals through a digital/analog (D/A) interface, amplifies the signals through a power amplification circuit, enables a driving transducer array with high efficiency by using a matching circuit, finally converts the electric signals into sound energy and transmits the sound energy, and meanwhile, the display control platform monitors the working state of the parametric array sound source system in real time.

The parametric array sound source system provided by the embodiment of the invention has the same technical characteristics as the parametric array sound source system provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved. For the sake of brevity, where not mentioned in the section of the embodiments, reference may be made to the corresponding matters in the foregoing embodiments.

The embodiment also provides an electronic device, a schematic structural diagram of which is shown in fig. 13, and the electronic device includes a processor 101 and a memory 102; the memory 102 is used for storing one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the control method of the parametric array sound source system.

The electronic device shown in fig. 13 further includes a bus 103 and a communication interface 104, and the processor 101, the communication interface 104, and the memory 102 are connected through the bus 103.

The Memory 102 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Bus 103 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 13, but that does not indicate only one bus or one type of bus.

The communication interface 104 is used for connecting with at least one user terminal and other network units through a network interface, and sending the packaged IPv4 message or IPv4 message to the user terminal through the network interface.

The processor 101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 101. The Processor 101 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102, and completes the steps of the method of the foregoing embodiment in combination with the hardware thereof.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method of the foregoing embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in software functional units and sold or used as a stand-alone product, may be stored in a non-transitory computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A parametric array sound source device, comprising: the system comprises a phased emission host, a parametric acoustic array and an upper computer unit; the parametric acoustic array port of the phased emission host is connected with the parametric acoustic array through an emission cable; an upper computer port of the phase control emission host is connected with the upper computer unit through a bearing cable;

the phased transmitting host is used for receiving a control command transmitted from the upper computer unit and controlling a parametric signal of the parametric acoustic array according to the control command; the power supply is also used for receiving the electric energy transmitted from the upper computer unit;

the parametric acoustic array is used for converting the electric energy into acoustic energy according to the parametric signal and transmitting the acoustic wave corresponding to the acoustic energy according to the parametric signal;

the upper computer unit is used for generating and sending the control instruction to the phase control emission host; wherein the control instructions at least comprise: parameter setting instructions, control execution instructions, state display instructions, signal setting instructions and beam direction setting instructions.

2. A parametric array acoustic source device as in claim 1, wherein the phased transmitting master comprises: the system comprises a digital control extension, a power management unit and a channel matching unit; the digital control extension is connected with a control port of the channel matching unit through a first control port; the digital control extension is connected with the control port of the power management unit through a second control port; a first power supply port of the power supply management unit is connected with a power supply port of the digital control extension; a second power supply port of the power supply management unit is connected with a power supply port of the channel matching unit;

the parametric acoustic array port is arranged on the power management unit, and the power management unit supplies power to the digital control extension through the first power supply port; the power management unit also supplies power to the channel matching unit through the second power supply port;

the digital control extension generates an emission instruction of the parametric acoustic array according to the control instruction transmitted to the channel matching unit by the first control port; the digital control extension is also interacted with the control instruction of the upper computer unit through the second control port and the parametric acoustic array port;

the channel matching unit comprises a multi-channel power amplifier matching circuit, and the multi-channel power amplifier matching circuit transmits the transmitting instruction transmitted by the first control port to the parametric acoustic array.

3. A parametric array acoustic source device as in claim 2, wherein the phased transmitting master further comprises: a watertight electronic compartment; the watertight electronic cabin is a cylindrical watertight shell;

20 groove positions which are adjacent in sequence are arranged in the watertight electronic cabin; the slot position is arranged on one side of the bottom plate; the 1 st to 16 th slots are used for placing the channel matching units; 17 th to 20 th slots are used for placing the power management units; and the other side of the bottom plate is provided with the numerical control extension.

4. A parametric array acoustic source device as claimed in claim 3, wherein the channel matching unit is a 32-channel transmitter; the 32-channel transmitters are arranged in the 16 slot positions, each slot position comprises a 2-channel power amplifier matching circuit, each power amplifier matching circuit comprises a power amplifier matching circuit and a matching circuit, and the electric power of each power amplifier matching circuit is 330W.

5. A parametric array acoustic source device as claimed in claim 3, wherein the power management unit comprises at least: a first transmitter power supply, a second transmitter power supply, a third transmitter power supply, a fourth transmitter power supply; further comprising: the device comprises a first motor power supply, a second motor power supply, a standby power supply and a voltage conversion module;

the first transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 1-to-8-channel transmitter;

the second transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 9-to-16-channel transmitter;

the third transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 17-to-24-channel transmitter;

the fourth transmitter power supply is used for providing a power supply interface of 42V and 5A for the power amplifier matching circuit corresponding to the 25-32 channel transmitter;

the first motor power supply is used for providing a first motor power supply interface of 24V and 7A;

the second motor power supply is used for providing a second motor power supply interface of 24V and 7A;

the standby power supply is used for providing a 24V and 2A standby power supply interface, and the voltage conversion module is a DC-DC module and/or a DC-LDO module.

6. The parametric array acoustic source device according to claim 5, wherein the power amplifier matching circuit includes; a first amplifier and a second amplifier; the first amplifier and the second amplifier are both class D audio power amplifiers TDA8954; and combining the first amplifier and the second amplifier into an output channel which is used as the output end of the power amplifier matching circuit.

7. A parametric array acoustic source device as in claim 1, wherein the parametric acoustic array comprises: a horizontal array and a vertical array;

the horizontal array is a linear array with evenly spaced and densely arranged elements, and comprises 32 elements arranged at equal intervals; the distance between the elements is 22.3mm, and the horizontal beam opening angle is 2.6 degrees;

the vertical array is a linear array with non-phased wave beams and comprises 26 oscillators arranged at equal intervals; the vertical beam opening angle of the vibrator is 3.2 degrees.

8. The parametric array sound source device according to claim 1, wherein the upper computer unit includes: the system comprises a deck unit, a display control platform and power supply equipment; the deck unit is connected with the phase-controlled transmitting host and used for transmitting the control command; the display control platform is connected with the deck unit and used for generating the control command; the power supply equipment is connected with the deck unit and used for supplying the electric energy.

9. A parametric array acoustic source system, comprising: the system comprises a display control platform, a bearing platform, a motor and parametric array sound source equipment;

the display control platform is arranged on the water surface, and the bearing platform, the motor and the parametric array sound source equipment are arranged below the water surface; the parametric array sound source device as set forth in any one of claims 1 to 8, comprising: the system comprises a phased transmitting host, a parametric acoustic array and an upper computer unit; wherein the phased launch main unit and the motor are fixed in the load-bearing platform; the upper computer unit is arranged on the display control platform; the phased transmitting host is connected with the parametric acoustic array through a transmitting cable; the phase control emission host is connected with the upper computer unit through a bearing cable.

10. A control method of a parametric array sound source system, which is applied to the parametric array sound source system as set forth in claim 9, the method comprising:

electrifying the initialized parametric array sound source system;

generating a control instruction by using a transmitting signal instruction and a transmitting beam angle set by the display and control platform, and sending the control instruction to the phase control transmitting host;

controlling the phase-controlled transmitting host to receive the control instruction, determining an electric signal to be transmitted according to the control instruction, and determining a signal delay result of each channel calculated by the transmitting beam angle as a parameter signal;

and controlling the parametric acoustic array by using the parametric signal to convert the electric signal to be transmitted into acoustic energy, and monitoring the working state of the parametric array sound source equipment in real time by using the display and control platform.

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