On-line dynamic test system for operating distance of low and medium frequency acoustic array

Abstract

The invention relates to an on-line dynamic test system for the operating distance of a low and medium frequency acoustic array, and the system comprises a platform and environment monitoring unit which is used for monitoring the information of a water surface unmanned platform, water surface and underwater space, and providing timely, accurate and reliable data for a test process; the underwater sound sensing unit is used for actively transmitting or passively receiving sound wave signals; and the power signal generation unit is used for electric signal generation and power amplification of signals in a form specified by a user. The system overcomes the difficulty that a test system mode is built on site manually in a traditional complex lake and sea environment, and the whole test system has the advantages of modularization, high integration level, good man-machine interaction and the like, is convenient to carry and transport, is rapidly deployed on site, and adapts to a complex water area environment.

Description

Technical Field:

[0001] The present invention belongs to the technical field of underwater acoustic metrology and testing, and relates to an on-line dynamic test system for the operating range of a medium and low frequency acoustic array. Background Art:

[0002] The medium and low frequency acoustic array is an important part of the core capabilities of a warship, and is the eyes and ears for underwater reconnaissance, torpedo warning, and target detection. The quality and stability of its performance play a decisive role in the warship's ability to perform tasks such as reconnaissance and tracking. The development, use, and evaluation of technical indicators of the medium and low frequency acoustic array are inseparable from repeated experimental tests. Before delivery, the medium and low frequency acoustic array needs to undergo self-inspection on the lake, mooring inspection, and sea trial of the whole machine. After being put into use, after every fixed period of whole ship maintenance, in case of failure or after maintenance, the performance of the medium and low frequency acoustic array needs to be inspected to ensure that the equipment performance meets the overall use requirements.

[0003] Currently, the testing work of the medium and low frequency acoustic array is carried out in a lake test site, at the dock, or at sea, and still adopts the traditional manned testing mode, that is, personnel participation and direct operation are required. The test personnel carry instrument equipment to build a test system on site, and debug, configure, and process the system according to the test items. High professional skills and experience are required to ensure the accuracy and reliability of the test results. This testing method is complex to implement and faces the following difficulties: The general instruments and underwater acoustic transducers are relatively large in volume and heavy in weight, making them inconvenient to carry. When conducting long-distance tests in lakes and seas, auxiliary platforms are often required for fixed-point cooperation. The auxiliary platforms are not guaranteed, and it is impossible to meet the test and evaluation problems of the performance changes of the medium and low frequency acoustic array under moving states. In harsh hydrographic environments, it is also difficult for test personnel to maintain an efficient working state, and the data accuracy is not high. Summary of the Invention:

[0004] The technical problem to be solved by the present invention is to provide an on-line dynamic test system for the operating range of a medium and low frequency acoustic array. By utilizing the characteristics of miniaturization and flexible deployment of the unmanned surface platform, the system combines automated deployment, remote transmission control, and digital underwater acoustic modules, overcomes the difficulties of the traditional mode of manually building a test system in complex lake and sea environments. The entire test system has advantages such as modularization, high integration, and good human-computer interaction, being convenient for carrying and transportation, rapid on-site deployment, and adapting to complex water environments. The system provides a flexible and feasible on-line and long-distance dynamic test solution for the detection performance test of the medium and low frequency acoustic array under the environmental conditions of inland lakes and coastal waters.

[0005] The technical solution of the present invention is to provide an on-line dynamic test system for the operating range of a medium and low frequency acoustic array, including

[0006] The platform and environment monitoring unit is used to monitor the unmanned surface platform, surface and underwater space information, providing timely, accurate and reliable data for the test process;

[0007] The underwater acoustic sensing unit is used to actively transmit or passively receive acoustic wave signals;

[0008] The power signal generating unit is used for the electrical signal generation and power amplification of signals in the specified form by the user;

[0009] The visualization processing unit is used for data acquisition, processing, storage, management, display and the central control of the test system;

[0010] The wireless transmission unit is used for real-time interactive sending and receiving of data;

[0011] The power supply control unit is used to provide stable and reliable power supply for the whole test system;

[0012] The automatic retracting and deploying unit is used for the automatic retracting and deploying of the underwater acoustic sensing unit;

[0013] The navigation and positioning unit is used to obtain the absolute coordinates and relative directions of the unmanned surface platform and remote operators;

[0014] The unmanned surface platform is used to carry all the component instrument devices to the designated water area.

[0015] The present invention adopts the "unmanned +" test mode, using the combination of advanced digital technology and automation technology to execute the test tasks. The realization of such a working mode usually utilizes advanced sensors, control systems and data processing algorithms, and during the test process, the test personnel conduct real-time monitoring and feedback at the remote end, which can improve the test efficiency and accuracy, and reduce the influence of human factors and operation errors on the test results.

[0016] Preferably, the platform and environment monitoring unit includes attitude, water flow velocity, temperature, pressure, wind speed, wind direction and heading sensors, which are installed at different positions to obtain the corresponding parameter values.

[0017] Preferably, the underwater acoustic sensing unit includes a broadband underwater acoustic transmitting sound source and a vertical receiving array. Among them, the broadband underwater acoustic transmitting sound source is used to radiate specific form acoustic signals into the water medium, which includes a standard transmitter, a standard receiver, an electronic cabin, a multi-core load-bearing cable and a tow body; the vertical receiving array is used to receive active target acoustic signals or underwater background noise from the water area environment, which includes a standard receiver, a watertight plug structure, a guide plate and a multi-core load-bearing cable.

[0018] Preferably, the lower end interface of the electronic cabin of the broadband underwater acoustic transmitting sound source is docked with the sensors carried by the broadband underwater acoustic transmitting sound source, and the upper end interface is docked with the multi-core load-bearing cable to realize the centralized upload and download of information. The tow body is made of lightweight and low-acoustic-scattering materials, such as carbon fiber and titanium alloy.

[0019] Preferably, the standard receivers on the vertical receiving array are arranged at equal intervals. The standard receivers and the multi-core load-bearing cable are connected in a watertight plug-in form. The guiding plates are installed at both ends of the watertight plug-in structure to realize the direction guiding during the retraction and deployment of the vertical receiving array.

[0020] Preferably, the power signal generating unit includes an arbitrary waveform generating module, a linear power amplification module, an impedance matching module, a voltage and current sampling circuit module, and a portable shock-absorbing chassis. The power signal generating unit adopts a portable integrated structure, and each module is integrally arranged in the portable shock-absorbing chassis.

[0021] Preferably, the visualization processing unit includes an on-site display and control terminal, a remote display and control terminal, a multi-channel acquisition card, and an underwater acoustic test comprehensive processing software. Among them, the on-site display and control terminal has a variety of data interfaces and hard disks, and can realize the connection with different types of sensors of the platform and the environmental monitoring unit, the multi-channel acquisition card, and local data storage. It is arranged on the unmanned surface platform; the remote display and control terminal is arranged on the operator's side and can realize the remote command control of the on-site display and control terminal; the multi-channel acquisition card is connected to each output of the vertical receiving array of the underwater acoustic perception unit and the voltage and current sampling circuit module of the power signal generating unit; the underwater acoustic test comprehensive processing software is installed on the on-site display and control terminal and the remote display and control terminal to realize the switching between on-site and remote control modes.

[0022] Preferably, the automatic retraction and deployment unit includes a winch cable reel, a guiding mechanism, a cable arranging slide rail, and a driving motor. The multi-core load-bearing cables of the broadband underwater acoustic transmitting sound source and the vertical receiving array pass through the guiding mechanism and are connected to the winch cable reel; the driving motor controls the rotation of the winch cable reel and the cable arranging slide rail at the same time to realize the retraction and deployment of the multi-core load-bearing cable; the guiding mechanism matches the guiding plates of the vertical receiving array.

[0023] Preferably, the unmanned surface platform is equipped with a power system, a controller, and a lifting hole. The status information of the unmanned surface platform can be transmitted to the on-site display and control terminal of the visualization processing unit through the interface.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] Aiming at the problem of detecting the performance of medium and low frequency acoustic arrays under the environmental conditions of inland lakes and coastal waters, the present invention provides an online dynamic test system for the action distance of medium and low frequency acoustic arrays. Around elements such as high efficiency, reliability and flexibility, the test system modularizes the functions of traditional instruments and integrates them with automation equipment and remote transmission control equipment, which is arranged on a small unmanned surface platform. It has the advantages of high integration, good human-computer interaction, rapid on-site deployment, strong environmental adaptability and mobile testability. This set of test system overcomes the dilemma of a large number of connections in the artificial on-site construction of the test system in the traditional complex lake and sea environment. Personnel can realize the test of the acoustic array on the shore. With its own power, it can carry out test work at any position under the environmental conditions of inland lakes and coastal waters. The application of this system can bring higher test quality and better user experience to the test of the action distance of medium and low frequency acoustic arrays and other detection indicators. Brief Description of the Drawings:

[0026] Figure 1 It is a schematic diagram of the composition of the test system of the present invention.

[0027] Figure 2 It is a test schematic diagram of the test system of the present invention.

[0028] Figure 3 It is a schematic diagram of the automatic retracting and deploying unit of the test system of the present invention.

[0029] Figure 4 It is a schematic diagram of the vertical measurement array of a test system of the present invention.

[0030] In the figure: 1, remote display and control terminal; 2, wireless transmitter; 3, hanging platform; 4, medium and low frequency acoustic array; 5, vertical receiving array; 6, underwater acoustic transmitting sound source; 7, unmanned surface platform; 9, cable laying slide rail; 10, guiding mechanism; 11, winch cable reel; 13, multi-core load-bearing cable; 14, watertight plug structure; 15, standard receiver; 16, guiding piece. Detailed Embodiments:

[0031] The following further describes the present invention in detail in conjunction with the drawings:

[0032] An online dynamic test system for the action distance of medium and low frequency acoustic arrays includes a platform and environmental monitoring unit, an underwater acoustic perception unit, a power signal generating unit, a visualization processing unit, a wireless transmission unit, a power supply control unit, an automatic retracting and deploying unit, a navigation and positioning unit and an unmanned surface platform, as Figure 1 shown. Among the above functional units,

[0033] The platform and environmental monitoring unit is used to monitor the information of the unmanned surface platform, the water surface and the underwater space, and provide timely, accurate and reliable data for the test process;

[0034] An underwater acoustic sensing unit for actively transmitting or passively receiving acoustic wave signals;

[0035] A power signal generating unit for generating electrical signals and power amplifying signals in a user-specified form;

[0036] A visualization processing unit for data acquisition, processing, storage, management, display, and central control of the test system;

[0037] A wireless transmission unit for real-time interactive sending and receiving of data;

[0038] A power supply control unit for providing stable and reliable power supply for the entire test system;

[0039] An automatic retracting and deploying unit for automatically retracting and deploying the underwater acoustic sensing unit;

[0040] A navigation and positioning unit for obtaining the absolute coordinates and relative directions of the unmanned surface platform and remote operators;

[0041] An unmanned surface platform for carrying all the component instruments and equipment to a designated water area.

[0042] This test system uses a remote operator to control an unmanned surface platform carrying various functional units to achieve dynamic testing of the detection performance of mid-low frequency acoustic arrays. In the testing process of the present invention, the tester conducts real-time monitoring and feedback at the remote end, which can improve the testing efficiency and accuracy and reduce the influence of human factors and operation errors on the test results.

[0043] Among them, the platform and environment monitoring unit includes attitude, water flow velocity, temperature, pressure, wind speed, wind direction, and heading sensors, which are installed at different positions to obtain corresponding parameter values.

[0044] As an implementation, the underwater acoustic sensing unit includes a broadband underwater acoustic transmitting sound source and a vertical receiving array. Among them, the broadband underwater acoustic transmitting sound source is used to radiate specific form acoustic signals into the water medium, which includes a standard transmitter, a standard receiver, an electronic cabin, a multi-core load-bearing cable, and a tow body; the vertical receiving array is used to receive active target acoustic signals or underwater background noise from the water area environment, which includes a standard receiver, a watertight plug structure, a guide piece, and a multi-core load-bearing cable. The lower end interface of the electronic cabin of the broadband underwater acoustic transmitting sound source is docked with the sensors carried by the broadband underwater acoustic transmitting sound source, and the upper end interface is docked with the multi-core load-bearing cable to achieve centralized information uploading and downloading. The tow body is made of lightweight and low acoustic scattering materials. In this embodiment, the tow body is made of carbon fiber and titanium alloy. The standard receivers on the vertical receiving array are arranged at equal intervals, and the standard receivers and the multi-core load-bearing cable are connected in a watertight plug form. The guide pieces are installed at both ends of the watertight plug structure to achieve direction guidance during the retracting and deploying process of the vertical receiving array.

[0045] As an implementation manner, the power signal generating unit includes an arbitrary waveform generating module, a linear power amplification module, an impedance matching module, a voltage and current sampling circuit module, and a portable shock-proof chassis. The power signal generating unit adopts a portable integrated structure, and each module is integrally arranged in the portable shock-proof chassis.

[0046] As an implementation manner, the automatic retracting and deploying unit includes a winch cable reel, a guiding mechanism, a cable arranging slide rail, and a driving motor. The multi-core load-bearing cables of the broadband underwater acoustic transmitting sound source and the vertical receiving array pass through the guiding mechanism and are connected to the winch cable reel; the driving motor controls the rotation of the winch cable reel and the cable arranging slide rail at the same time to realize the retracting and deploying of the multi-core load-bearing cable; the guiding mechanism matches the guiding piece of the vertical receiving array.

[0047] In this embodiment, the wireless transmission unit is a wireless transmitter.

[0048] The visualization processing unit includes a on-site display and control terminal, a remote display and control terminal, a multi-channel acquisition card, and underwater acoustic test comprehensive processing software. Among them, the on-site display and control terminal has a variety of data interfaces and hard disks, and can realize the connection with different types of sensors of the platform and environment monitoring unit, the multi-channel acquisition card, and local data storage, and is arranged on the unmanned surface platform; the remote display and control terminal is arranged on the operator's side and can realize the remote command control of the on-site display and control terminal; the multi-channel acquisition card is connected to each output of the vertical receiving array of the underwater acoustic perception unit and the voltage and current sampling circuit module of the power signal generating unit; the underwater acoustic test comprehensive processing software is installed on the on-site display and control terminal and the remote display and control terminal to realize the switching between on-site and remote control modes.

[0049] In addition, the unmanned surface platform is equipped with a power system, a controller, and a hoisting hole by itself, and the status information of the unmanned surface platform can be transmitted to the on-site display and control terminal of the visualization processing unit through the interface.

[0050] During use, as Figure 2 shown, the remote display and control terminal 1 and the wireless transmitter 2 of this set of systems are carried by the test personnel and are deployed on the shore or the hoisting platform 3. The rest of the functional units of this set of systems are all arranged on the unmanned surface platform 7. The wireless transmitter 2 is also arranged on the unmanned surface platform 7. The operator can remotely monitor all the states of the unmanned surface platform and the loaded functional units in real time through the remote display and control terminal 1 at the shore end, and issue control instructions to make the remote end perform specific actions.

[0051] During lake tests, the medium and low frequency acoustic array 4 is deployed by the hoisting platform 3. During sea tests, the medium and low frequency acoustic array 4 is installed on the ship to be tested. The operator can replace the vertical receiving array 5 and the underwater acoustic transmitting sound source 6 according to different types of medium and low frequency acoustic arrays and test parameters.

[0052] Furthermore, as Figure 3As shown, the automatic retracting and deploying unit is arranged on the unmanned surface platform 7, the guiding mechanism 10 is mounted on the cable arranging slide rail 9, and both the vertical receiving array 5 and the underwater acoustic transmitting sound source can be connected to the winch cable reel 11 through the multi-core load-bearing cable 13 passing through the guiding mechanism 10.

[0053] Further, as Figure 4 shown, the watertight plugging structures 14 are distributed on the multi-core load-bearing cable 13, and a standard receiver 15 is led out from each watertight plugging structure 14. Guide pieces 16 are arranged at both the upper and lower ends of the watertight plugging structure 14, and the guide pieces 16 are matched with the sliding grooves on the guiding mechanism 10.

[0054] The present invention innovatively proposes a mid-low frequency acoustic array action distance on-line dynamic test system. Around elements such as high efficiency, reliability and flexibility, the functions of traditional instruments are modularly designed and integrated with automated equipment and remote transmission control equipment, and arranged on a small unmanned surface platform. It has the advantages of high integration, good human-computer interaction, rapid on-site deployment, good environmental adaptability and mobile testability. This set of test system gets rid of the dilemma of a large number of connections in the traditional complex lake and sea environment for manually building a test system on-site. Personnel can perform the test of the acoustic array on the shore. With its own power, it can conduct test work at any position under the environmental conditions of inland lakes and coastal waters. The application of this system can bring higher test quality and better user experience to the mid-low frequency acoustic array test.

[0055] The above is only an illustration of the preferred embodiments of the present invention, but it should not be construed as a limitation to the claims. All equivalent process transformations made using the specification of the present invention are included in the patent protection scope of the present invention.

Claims

1. An on-line dynamic test system for the operating range of a medium and low frequency acoustic array, characterized in that: including a platform and environment monitoring unit, which is used to monitor the unmanned surface platform, surface and underwater space information, and provide timely, accurate and reliable data for the test process; an underwater acoustic sensing unit, which is used to actively transmit or passively receive acoustic wave signals; a power signal generating unit, which is used for the electrical signal generation and power amplification of signals in the form specified by the user; a visualization processing unit, which is used for data acquisition, processing, storage, management, display and central control of the test system; a wireless transmission unit, which is used for real-time interactive sending and receiving of data; a power supply control unit, which is used to provide stable and reliable power supply for the whole test system; an automatic retracting and deploying unit, which is used for the automatic retracting and deploying of the underwater acoustic sensing unit; a navigation and positioning unit, which is used to obtain the absolute coordinates and relative directions of the unmanned surface platform and remote operators; an unmanned surface platform, which is used to carry all the component instrument devices to the designated water area.

2. The in-line dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 1, characterized in that: The platform and environment monitoring unit includes attitude, water flow velocity, temperature, pressure, wind speed, wind direction and heading sensors, which are installed at different positions to obtain the corresponding parameter values.

3. The in-line dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 1, characterized in that: The underwater acoustic sensing unit includes a broadband underwater acoustic transmitting sound source and a vertical receiving array. Among them, the broadband underwater acoustic transmitting sound source is used to radiate specific form acoustic signals into the water medium, and it includes a standard transmitter, a standard receiver, an electronic cabin, a multi-core load-bearing cable and a tow body; the vertical receiving array is used to receive active target acoustic signals or underwater background noise from the water area environment, and it includes a standard receiver, a watertight plug structure, a guide vane and a multi-core load-bearing cable.

4. The in-line dynamic test system for the operating range of the medium and low frequency acoustic array according to claim 3, characterized in that: The lower end interface of the electronic cabin of the broadband underwater acoustic transmitting sound source is docked with the sensors carried by the broadband underwater acoustic transmitting sound source, and the upper end interface is docked with the multi-core load-bearing cable to realize the centralized upload and download of information. The tow body is made of lightweight and low acoustic scattering materials.

5. The on-line dynamic test system for the operating range of the medium and low frequency acoustic array according to claim 3, characterized in that: The standard receivers on the vertical receiving array are arranged at equal intervals, and the standard receivers and the multi-core load-bearing cable are connected in a watertight plug form. The guide vanes are installed at both ends of the watertight plug structure to realize the direction guidance during the retracting and deploying process of the vertical receiving array.

6. The in-line dynamic test system for the operating range of the medium and low frequency acoustic array according to claim 1, characterized in that: The power signal generating unit includes an arbitrary waveform generating module, a linear power amplification module, an impedance matching module, a voltage and current sampling circuit module and a portable shock-absorbing chassis. The power signal generating unit adopts a portable integrated structure, and each module is integrated and arranged in the portable shock-absorbing chassis.

7. The on-line dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 1, characterized in that: The visualization processing unit includes a on-site display and control terminal, a remote display and control terminal, a multi-channel acquisition card and underwater acoustic test comprehensive processing software. Among them, the on-site display and control terminal has a variety of data interfaces and hard disks, and can realize the connection with different types of sensors of the platform and environment monitoring unit, the multi-channel acquisition card and local data storage, and is arranged on the unmanned surface platform; the remote display and control terminal is arranged on the operator's side and can realize the remote command control of the on-site display and control terminal; the multi-channel acquisition card is connected to each output of the vertical receiving array of the underwater acoustic sensing unit and the voltage and current sampling circuit module of the power signal generating unit; the underwater acoustic test comprehensive processing software is installed on the on-site display and control terminal and the remote display and control terminal to realize the switching between on-site and remote control modes.

8. The on-line dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 3, characterized in that: The automatic retracting and deploying unit includes a winch cable reel, a guiding mechanism, a cable arranging slide rail, and a driving motor. The multi-core load-bearing cables of the broadband underwater acoustic transmitting sound source and the vertical receiving array pass through the guiding mechanism and are connected to the winch cable reel. The driving motor controls the rotation of both the winch cable reel and the cable arranging slide rail simultaneously to realize the retracting and deploying of the multi-core load-bearing cable. The guiding mechanism is matched with the guiding fins of the vertical receiving array.

9. The on-line dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 7, characterized in that: The unmanned surface platform is equipped with a power system, a controller, and a lowering hole. The status information of the unmanned surface platform can be transmitted to the on-site display and control terminal of the visualization processing unit through an interface.

10. The online dynamic test system for the action distance of the medium and low frequency acoustic array according to claim 4, characterized in that: The tow body is made of carbon fiber and titanium alloy.

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