CN117930326A - Transmission type underwater acoustic detection system based on distributed submerged buoy and application method thereof - Google Patents
Transmission type underwater acoustic detection system based on distributed submerged buoy and application method thereof Download PDFInfo
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Abstract
The embodiment of the disclosure relates to a transmission type underwater acoustic detection system based on a distributed submerged buoy and a use method thereof. The disclosed embodiments construct a stable acoustic field between adjacent transmitting and receiving submerged markers by continuously collecting probe acoustic waves from the transmitting submerged marker using the receiving submerged marker. When the target is close to the space between the transmitting submerged buoy and the receiving submerged buoy, target acoustic characteristics which are difficult to eliminate, such as forward sound scattering of the target, source-induced internal wave acoustic field variation and the like, are excited in the transmission direction, and acoustic field distortion at the receiving submerged buoy is caused. The receiving submerged buoy of the system is subjected to signal acquisition and processing, and the processing result is sent back to the processing terminal, so that the remote detection of the weak target is realized. The defects of short detection distance, short service life and poor layout flexibility of the target echo-based submerged buoy acoustic detection system are overcome, and the detection range and the working time of the system are effectively improved.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of underwater acoustic detection, in particular to a transmission type underwater acoustic detection system based on a distributed submerged buoy and a use method thereof.
Background
The acoustic submerged buoy is widely used in the field of acoustic detection of underwater targets and is used for detecting targets such as underwater vehicles, submarines and the like. The submerged buoy system can autonomously emit acoustic signals and can perform long-term fixed-point acoustic signal acquisition, storage, processing and communication tasks in a concealed manner. As a key node of underwater detection, the submerged buoy has good stability and durability, can be deployed according to specific scenes and requirements, and plays an important role in the field of underwater target detection and security.
The traditional submerged buoy detection system mainly aims at detecting target reflection echoes, and has several main problems: firstly, the detection distance for acoustic weak targets such as tile-covered targets is limited, and it is difficult to effectively cover a wide sea area; secondly, the longer emitted sound power makes the working life of the submerged buoy shorter, and frequent replacement or maintenance is needed; in addition, the omni-directional coverage detection mode has limited application modes, and is difficult to flexibly deploy according to the requirement domain environment. The above problems limit the detection performance of conventional systems when detecting for weak targets.
Disclosure of Invention
In order to avoid the defects of the prior art, the invention provides a transmission type underwater acoustic detection system based on a distributed submerged buoy, which is used for solving the problems that in the prior art, the detection distance for acoustic weak targets such as a tile target is limited, and the wide sea area is difficult to effectively cover; the longer emitted sound power makes the working life of the submerged buoy shorter, and frequent replacement or maintenance is needed; and is difficult to flexibly deploy according to the requirement domain environment.
According to a first aspect of embodiments of the present disclosure, there is provided a transmissive underwater acoustic detection system based on a distributed submerged buoy, the system comprising:
the system comprises a plurality of transmitting submerged labels, a plurality of receiving submerged labels and a processing terminal;
The transmitting submerged buoy comprises a transmitting module, a first floating body, a first mooring cable, a first acoustic releaser, a first gravity anchor block and a first watertight cabin, wherein the first gravity anchor block is arranged at the bottom of the first mooring cable, the first acoustic releaser and the first watertight cabin are arranged on the first mooring cable, the first floating body is arranged at the top of the first mooring cable, the transmitting module comprises a first main control processor, a first interface unit, a power amplifier, a matching unit, an omni-directional transducer, a first satellite communication machine, a first time service device, a first signal storage unit, a first power supply unit and a first temperature depth sensor, the first temperature depth sensor is arranged on the first mooring cable, the omni-directional transducer is arranged on the outer wall of the first watertight cabin, the first satellite communication machine is arranged in the first floating body, and the first main control processor, the first interface unit, the power amplifier, the matching unit, the first time service device, the first signal storage unit and the first power supply unit are sealed in the first watertight cabin;
The receiving submerged buoy comprises a receiving module, a second floating body, a second mooring cable, a second acoustic releaser, a second gravity anchor block and a second watertight cabin, wherein the second gravity anchor block is arranged at the bottom of the second mooring cable, the second acoustic releaser and the first watertight cabin are arranged on the second mooring cable, the second floating body is arranged at the top of the first mooring cable, the receiving module comprises a second main control processor, a second interface unit, a second satellite communication machine, a second time service unit, a hydrophone array, a signal conditioning unit, a signal acquisition unit, a second signal storage unit, a signal processing unit, a second power supply unit and a second temperature and depth sensor, the hydrophone array and the second temperature and depth sensor are arranged on the second mooring cable, the second satellite communication machine is arranged in the second floating body, and the second main control processor, the second interface unit, the second time service unit, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit and the second power supply unit are all sealed in the second watertight cabin;
the processing terminal comprises a user display interface and a terminal processor, wherein the user display interface is electrically connected with the terminal processor, the terminal processor comprises a third satellite communication machine, a data processing unit and a data storage unit, and the third satellite communication machine, the data processing unit and the data storage unit are sequentially connected.
Further, the first main control processor is connected with the power amplifier, the matching unit, the omnidirectional transducer, the first satellite communication machine, the first time service device, the first signal storage unit, the first power supply unit and the first temperature and depth sensor through the first interface unit, the first power supply unit is connected with the power amplifier, the matching unit, the omnidirectional transducer, the first satellite communication machine, the first time service device, the first signal storage unit and the first temperature and depth sensor through the first interface unit, the power amplifier, the matching circuit and the omnidirectional transducer are mutually connected, and the first satellite communication antenna is connected with the first communication control unit.
Further, the second main control processor is respectively connected with the second satellite communication machine, the second time service device, the hydrophone array, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit, the second power supply unit and the second temperature and depth sensor through the second interface unit, the second power supply unit is respectively connected with the second satellite communication machine, the second time service device, the hydrophone array, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit and the second temperature and depth sensor through the second interface unit, and the signal conditioning unit, the signal acquisition unit, the signal processing unit and the second signal storage unit are sequentially connected with the second satellite communication antenna and the second communication control unit.
According to a second aspect of embodiments of the present disclosure, there is provided a method for using a transmission-type underwater acoustic detection system based on a distributed submerged buoy, based on a transmission-type underwater acoustic detection system as set forth in any one of the above, the method for using comprising:
Arranging a plurality of transmitting submerged labels and a plurality of receiving submerged labels according to a preset scheme;
And interacting with the transmitting submerged buoy and the receiving submerged buoy by using the processing terminal.
Further, the step of arranging the transmitting submerged buoy and the receiving submerged buoy according to a preset scheme includes:
the transmitting submerged buoy and the receiving submerged buoy are alternately arranged along a straight line.
Further, the step of arranging the transmitting submerged buoy and the receiving submerged buoy according to the preset scheme further includes:
The transmitting submerged buoy and the receiving submerged buoy are alternately arranged in a polygonal shape.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
In the embodiment of the disclosure, through the transmission type underwater acoustic detection system based on the distributed submerged buoy and the use method thereof, on one hand, the detection sound waves from the emission submerged buoy are continuously collected through the receiving submerged buoy, and a stable sound field is constructed between the adjacent emission submerged buoy and the receiving submerged buoy. When the target is close to the space between the transmitting submerged buoy and the receiving submerged buoy, target acoustic characteristics which are difficult to eliminate, such as forward sound scattering of the target, source-induced internal wave acoustic field variation and the like, are excited in the transmission direction, and acoustic field distortion at the receiving submerged buoy is caused. The receiving submerged buoy of the system is subjected to signal acquisition and processing, and the processing result is sent back to the processing terminal, so that the remote detection of the weak target is realized. On the other hand, the defects of short detection distance and short working life of the target echo-based submerged buoy detection system are overcome, and the detection range and the working time of the system are effectively improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
FIG. 1 illustrates a schematic diagram of a transmission underwater acoustic detection system based on a distributed submerged buoy in an exemplary embodiment of the present disclosure;
FIG. 2 illustrates a functional schematic diagram of a distributed submerged buoy-based transmission type underwater acoustic detection system in an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a flowchart of the operation of a distributed submerged buoy-based transmissive underwater acoustic detection system in an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a method step diagram for using a distributed submerged buoy-based transmissive underwater acoustic detection system in an exemplary embodiment of the present disclosure;
FIG. 5 shows a schematic diagram of a first exemplary application scenario (OWER remote early warning acoustic tripwire) in an exemplary embodiment of the present disclosure;
fig. 6 shows a schematic diagram of a second exemplary application scenario (to domain lock out an acoustic fence) in an exemplary embodiment of the present disclosure.
In the figure, 1-1, a first floating body; 1-2, an omni-directional transducer; 1-3, a first watertight compartment; 1-4, a first temperature and depth sensor; 1-5, a first mooring line; 1-6, a first acoustic releaser; 1-7, a first gravity anchor block; 2-1, a second floating body; 2-2, a second watertight compartment; 2-3, hydrophone arrays; 2-4, a second temperature and depth sensor; 2-5, a second mooring cable; 2-6, a second acoustic releaser; 2-7, a second gravity anchor block; 3-1, displaying an interface; 3-2, a terminal processor.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
In this example embodiment, a transmission underwater acoustic detection system based on a distributed submerged buoy is provided first. Referring to fig. 1, the distributed submerged buoy-based transmission type underwater acoustic detection system may include:
the system comprises a plurality of transmitting submerged labels, a plurality of receiving submerged labels and a processing terminal;
The transmitting submerged buoy comprises a transmitting module, a first floating body 1-1, a first mooring cable 1-5, a first acoustic releaser 1-6, a first gravity anchor block 1-7 and a first watertight cabin 1-3, wherein the first gravity anchor block 1-7 is arranged at the bottom of the first mooring cable 1-5, the first acoustic releaser 1-6 and the first watertight cabin 1-3 are both arranged on the first mooring cable 1-5, the first floating body 1-1 is arranged at the top of the first mooring cable 1-5, the transmitting module comprises a first main control processor, a first interface unit, a power amplifier, a matching unit, an omnidirectional transducer 1-2, a first satellite communication machine, a first time service device, a first signal storage unit, a first power supply unit and a first temperature depth sensor 1-4, the first temperature depth sensor 1-4 is arranged on the first mooring cable 1-5, the omnidirectional transducer 1-2 is arranged on the outer wall of the first cabin 1-3, and the first satellite communication machine is arranged in the first main control processor 1-1, the first power amplifier unit, the first watertight cabin 1-4 and the first power amplifier unit are arranged in the first watertight cabin 1-3;
The receiving submerged buoy comprises a receiving module, a second floating body 2-1, a second mooring cable 2-5, a second acoustic releaser 2-6, a second gravity anchor block 2-7 and a second watertight cabin 2-2, wherein the second gravity anchor block 2-7 is arranged at the bottom of the second mooring cable 2-5, the second acoustic releaser 2-6 and the first watertight cabin 1-3 are both arranged on the second mooring cable 2-5, the second floating body 2-1 is arranged at the top of the first mooring cable 1-5, the receiving module comprises a second main control processor, a second interface unit, a second satellite communication unit, a second time service device, a hydrophone array 2-3, a signal conditioning unit, a signal acquisition unit, a second signal storage unit, a signal processing unit, a second power supply unit and a second temperature depth sensor 2-4, the hydrophone array 2-3 and the second temperature depth sensor 2-4 are both arranged on the second mooring cable 2-5, the second satellite communication unit is arranged in the second floating body 2-1, and the second main control processor, the second interface unit, the second power supply unit and the second watertight cabin 2-3 are all arranged in the signal conditioning unit;
the processing terminal comprises a user display interface 3-1 and a terminal processor 3-2, wherein the user display interface 3-1 is electrically connected with the terminal processor 3-2, and the terminal processor 3-2 comprises a third satellite communication machine, a data processing unit and a data storage unit which are sequentially connected.
By the transmission type underwater acoustic detection system based on the distributed submerged buoy, on one hand, the detection sound waves from the emission submerged buoy are continuously collected by using the receiving submerged buoy, and a stable sound field is constructed between the adjacent emission submerged buoy and the receiving submerged buoy. When the target approaches between the transmitting submerged buoy and the receiving submerged buoy, target acoustic characteristics which are difficult to eliminate, such as target forward sound scattering, source-induced internal wave acoustic field variation and the like, are excited in the transmission (from the transmitting submerged buoy to the receiving submerged buoy) direction, so that acoustic field distortion at the receiving submerged buoy is caused. The receiving submerged buoy of the system is subjected to signal acquisition and processing, and the processing result is sent back to the processing terminal, so that the remote detection of the weak target is realized. On the other hand, the defects of short detection distance and short working life of the target echo-based submerged buoy detection system are overcome, and the detection range and the working time of the system are effectively improved.
Hereinafter, respective portions of the above-described distributed submerged buoy-based transmissive underwater acoustic detection system in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 3.
In one embodiment, the system comprises an I-part transmitting submerged buoy, a J-part receiving submerged buoy and 1-part processing terminals, wherein the number of I and J is 1-10 respectively, and the number of I and J is not limited in any way, and the system is specifically as follows:
As shown in fig. 2, the transmitting module includes a first main control processor, a first interface unit, a power amplifier, a matching unit, an omni-directional transducer 1-2, a first satellite communicator, a first time service device, a first signal storage unit, a first power supply unit and a first temperature and depth sensor 1-4.
The first main control processor is used for completing low-power-consumption duty of the submerged buoy, system state monitoring, user-defined transmission signal generation and on-time transmission signal work. For example, the first host processor is disposed in a SOM-TL3588 low power consumption microcomputer.
The power amplifier is used for receiving the signal to be transmitted output by the main control processor, amplifying the power of the signal to be transmitted, receiving the trigger signal output by the time service device, and outputting the amplified transmission signal to the omnidirectional transducer 1-2 after receiving the trigger signal.
The matching unit is used for adjusting the impedance of the circuit, ensuring the impedance matching of the input end and the output end, further maximizing the energy transmission efficiency and reducing the energy loss and the signal distortion.
The omni-directional transducer 1-2 is used to transmit a probe acoustic signal. The transducer receives the transmitted signal from the power amplifier, converts the electrical signal into an acoustic signal through an electro-acoustic energy conversion process, and radiates the acoustic signal into the water without directivity. For example, when the detected target is a large target, the emission frequency of the omnidirectional transducer 1-2 is lower and can be set to be 3kHz; when the detected target is a small target such as a submarine, the emission frequency of the omnidirectional transducer 1-2 is higher, and the center frequency is 50kHz. The detection signal can be set as a narrow-band chirp, with a bandwidth of 2kHz and a pulse width of 0.1s.
The first satellite communication machine is used for positioning and remotely controlling the submerged buoy. The satellite communication machine is communicated with a satellite to realize dynamic monitoring and recording of the position of the submerged buoy and provide accurate system node position information; the user can transmit instructions to the submerged buoy through the first satellite communication machine, and the working mode, task content and transmitting signal parameters of the transmitting module are controlled. The system mainly comprises a first satellite communication antenna and a first communication control unit, wherein the first satellite communication antenna is used for two-way communication with a satellite, and the first communication control unit is used for managing and controlling communication equipment and maintaining a system communication function.
The first time service device is used for performing time service calibration on the submerged buoy, ensures time synchronization of a user and the submerged buoy, and is beneficial to accurately controlling signal transmitting time.
The first storage unit is used for storing parameters for transmitting signals for the main control unit to call.
The first power supply unit is used for supplying power to the emission module, and the power supply unit can use a rechargeable lithium battery.
The first interface unit is used for providing a plurality of universal interfaces and realizing interface connection of the first main control processor, the power amplifier, the omnidirectional transducer 1-2, the first satellite communication machine, the first time service device, the first storage unit, the temperature and depth sensor and the first power supply unit. For example, the first interface unit may be a low-power consumption FPGA chip, and has a general-purpose interface of RS232, RS485, and ethernet.
The first temperature and depth sensor 1-4 is used for measuring the depth and temperature of the first watertight compartment 1-3 and inputting the measured depth and temperature into the first main control processor.
The first buoy 1-1, the first mooring line 1-5, the first acoustic release 1-6 and the first gravity anchor block 1-7 constitute a first mooring structure. The first watertight electronic compartment and the first mooring structure provide underwater airtight pressure-resistant conditions. The first watertight electronic cabin is mainly used for sealing the first main control processor, the first interface unit, the power amplifier, the matching unit, the first satellite communication control unit, the first time service device, the first storage unit and the first power supply unit inside the watertight electronic cabin, and protecting each unit inside the cabin body from working normally under severe marine environment. The first mooring structure is used for providing a platform for stably fixing wet end equipment such as a watertight cabin in an underwater environment.
The connection mode of each unit in the first watertight compartment 1-3 is as follows: the first power supply unit is connected with other units through the first interface unit to supply power; the first main control processor is connected with other units through a first interface unit and controls the input and output of each unit; in addition, the power amplifier, the matching circuit and the omnidirectional transducer 1-2 are directly connected; the first satellite communication antenna is connected with the first communication control unit to realize real-time communication among the modules, wherein the first satellite communication antenna is positioned in the first floating body 1-1, and the first communication control unit is positioned in the first watertight compartment 1-3; the other units are not in communication with each other.
After the transmitting module prepares to transmit the detection signal, the first main control processor generates the transmission signal by calling the data of the first storage unit, and the transmission signal is input into the power amplifier and the matching circuit for power amplification and then is input into the omnidirectional transducer 1-2 for signal transmission.
The connection sequence of the transmitting modules is as follows: a satellite communication antenna is fixed above a first floating body 1-1, an omnidirectional transducer 1-2 is connected below the first floating body 1-1, and a first watertight cabin 1-3, a first temperature and depth sensor 1-4, a first mooring cable 1-5 and a first gravity anchor block 1-7 are connected below the transducer.
Thus, the transmitting submerged buoy used comprises: the system comprises a first satellite communication antenna, a first floating body 1-1, an omnidirectional transducer 1-2, a first watertight cabin 1-3, a first temperature and depth sensor 1-4, a first mooring cable 1-5, a first acoustic releaser 1-6 and a first gravity anchor block 1-7; the connection sequence of the submerged buoy is as follows: the first satellite antenna is fixed at the top end of a first floating body 1-1, the first floating body 1-1 floats on the sea surface, and the lower end of the first floating body is sequentially connected with an omnidirectional transducer 1-2, a first watertight cabin 1-3, a first temperature and depth sensor 1-4, a first mooring cable 1-5, a first acoustic releaser 1-6 and a first gravity anchor block 1-7.
In one embodiment, as shown in fig. 2, the receiving module includes a second main control processor, a second interface unit, a second satellite communicator, a second time service device, a hydrophone array 2-3, a signal conditioning unit, a signal acquisition unit, a second signal storage unit, a signal processing unit, a second power supply unit, and a second temperature depth sensor 2-4.
The second main control processor is used for completing low-power-consumption duty of the receiving module, monitoring the system state and adjusting the sampling rate according to user setting. For example, the second host processor is provided in a SOM-TL3588 low power consumption microcomputer.
The second satellite communicator is used for positioning and remote control of the receiving module. The second satellite communication machine is communicated with the satellite to realize dynamic monitoring and recording of the position of the submerged buoy and provide accurate system node position information; the user can transmit instructions to the receiving submerged buoy through the second satellite communication machine, and the receiving submerged buoy working mode, task content and signal acquisition parameters are controlled. The system mainly comprises a second satellite communication antenna and a second communication control unit, wherein the second communication antenna is used for two-way communication with a satellite, and the second communication control unit is used for managing and controlling communication equipment and maintaining a system communication function.
The second time service device is used for performing time service calibration on the submerged buoy, so that time synchronization of a user and the submerged buoy is guaranteed, and taming and synchronous acquisition of each receiving submerged buoy are also guaranteed.
The hydrophone array 2-3 is used for receiving underwater acoustic signals at a plurality of positions, converting the acoustic signals received by the sensor into electric signals through an acoustic-electric energy conversion process, and transmitting the received analog signals to a signal conditioning unit. The array consists of N piezoelectric hydrophone units, the number N of the units is 1-100, and the array is not particularly limited.
The signal conditioning unit is used for improving the received electric signals from the hydrophone array 2-3, and preprocessing the signals through processes of filtering, amplifying and the like so as to adapt to the requirements of subsequent signal acquisition and processing.
The signal acquisition unit is used for acquiring the received signals, and converting the analog signals into a digital format through an analog-to-digital conversion process, so that the subsequent storage and processing are convenient.
The second signal storage unit is used for storing the acquired data and the processed data into the internal memory, and is also used for storing parameter settings of signal acquisition and processing, so that subsequent signal processing and data transmission are facilitated.
The signal processing unit is used for extracting the stored data and processing the data according to a specified algorithm to generate a feature extraction and target signal detection result.
The second power supply unit is used for supplying power to the receiving module, and the second power supply unit can use a rechargeable lithium battery.
The second interface unit is used for providing a plurality of universal interfaces and realizing interface connection of each unit of the second main control processor, the hydrophone array 2-3, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit, the second satellite communication machine, the second time service device, the second temperature and depth sensor 2-4 and the second power supply unit. For example, the second interface unit may be a low-power FPGA chip, and has a general-purpose interface of RS232, RS485, and ethernet.
The second temperature and depth sensor 2-4 is used for measuring the depth and temperature of the second watertight compartment 2-2 and inputting the measured depth and temperature into the second main control processor.
The second floating body 2-1, the second mooring cable 2-5, the second acoustic releaser 2-6 and the second gravity anchor block 2-7 form a second mooring structure. The second mooring structure and the second watertight compartment 2-2 are arranged to provide underwater airtight pressure-resistant conditions. The second watertight electronic cabin is mainly used for installing a second main control processor, a second interface unit, a second satellite communication control unit, a second time service device, a signal conditioning unit, a signal acquisition unit, a second signal storage unit, a signal processing unit and a second power supply unit inside the second watertight electronic cabin, and protecting all units inside the cabin body from working normally under severe ocean environments. The second mooring structure is used for providing a platform for stably fixing wet end equipment such as the second watertight cabin 2-2 body in an underwater environment.
The connection mode of each unit in the second watertight compartment 2-2 is as follows: the second power supply unit is connected with other units through the interface unit to supply power; the second main control processor is connected with other units through the interface unit and controls the input and output of each unit; in addition, the signal conditioning unit, the signal acquisition unit and the second signal storage unit are sequentially connected in series to realize the function of acquiring and storing data in real time; the signal processing unit, the signal acquisition unit, the signal processing unit and the second signal storage unit are sequentially connected in series to realize the functions of data real-time processing and storage; the second satellite communication antenna is connected with the second communication control unit to realize real-time communication among the modules, wherein the second satellite communication antenna is positioned in the second floating body 2-1, and the second communication control unit is positioned in the second watertight compartment 2-2; the other units are not in communication with each other.
After the receiving module prepares to receive signals, the main control processor opens the signal conditioning unit, the signal acquisition unit, the second signal storage unit and the signal processing unit through the interfaces, invokes signal acquisition parameters in the second signal storage unit, and inputs the signal acquisition parameters and the signal processing unit to start data real-time acquisition and processing functions. During processing, external signals sequentially enter the signal conditioning unit, the signal acquisition unit, the signal processing unit and the second signal storage unit. If data transmission is to be performed, the main control processor inputs the processed data in the second signal storage unit to the second satellite communication control unit through the interface unit, and then transmits the processed data through the second satellite communication antenna.
Thus, the receiving submerged buoy overall mechanism used comprises: the second satellite communication antenna, the second floating body 2-1, the second watertight compartment 2-2, the hydrophone array 2-3, the second temperature and depth sensor 2-4, the second mooring cable 2-5, the second acoustic releaser 2-6 and the second gravity anchor block 2-7; the connection sequence of each structure of the submerged buoy is as follows: the second satellite antenna is fixed at the top end of a second floating body 2-1, the second floating body 2-1 floats on the sea surface, and the lower end of the second floating body is sequentially connected with a second watertight cabin 2-2, a hydrophone array 2-3, a second temperature and depth sensor 2-4, a second mooring cable 2-5, a second acoustic releaser 2-6 and a second gravity anchor block 2-7.
In one embodiment, as shown in fig. 2, the processing terminal is equipment and software for performing man-machine interaction with each transmitting and receiving module, and communication connection is established between the processing terminal and the transmitting module and between the processing terminal and the receiving module through a third satellite communicator, so that visual presentation of instruction issuing, state monitoring and detection results of the transmitting module and the receiving module is realized. The processing terminal comprises a third satellite communication machine, a data processing unit, a data storage unit and a user display interface 3-1, wherein the third satellite communication machine, the data processing unit and the data storage unit are all arranged in the terminal processor 3-2.
In a specific embodiment, as shown in fig. 3, the workflow of the system sequentially includes accessing functions of each module, setting and reading working parameters and modes, starting detection tasks, and executing man-machine interaction commands. The method comprises the following steps:
Firstly, system function access confirmation is carried out, wherein the confirmation process is that a first main control processor and a second main control processor send instruction signals to functional units of corresponding modules, if a certain function is accessed, a confirmation signal is returned, and if the function is not accessed, the function is accessed and the confirmation signal is returned. Firstly, carrying out processing terminal function access confirmation so as to carry out function access confirmation on the man-machine interaction window and the communication module; then carrying out access confirmation on the function of the transmitting module, and carrying out access confirmation on the satellite communication function, the GPS positioning time service function and the detection signal parameter adjustment and transmitting function of each sound source submerged buoy so as to ensure that the transmitting module can normally operate; and finally, carrying out function access confirmation of the receiving module, and carrying out item-by-item confirmation on a satellite communication function, a GPS positioning time service function, a multichannel data acquisition setting function and a data processing return function so as to ensure that the receiving module can normally operate.
And after the function access is confirmed, system parameter reading is carried out, firstly, the communication parameters of the submerged buoy of the processing terminal are read, then, the GPS coordinates, GPS time service, transmitting time, waveform parameters and the like of the transmitting module are read, finally, the parameters of the GPS coordinates, GPS time service, signal acquisition, processing and the like of the receiving module are read, and whether the state parameters of the system are normal or not is confirmed.
And finally, a system function starting task is carried out, a receiving module signal acquisition task and a transmitting module signal transmitting task are started in sequence, and a man-machine interaction instruction is executed according to a returned result.
Further, the application method of the transmission type underwater acoustic detection system based on the distributed submerged buoy is provided in the embodiment. Referring to fig. 4, the method for using the distributed submerged buoy-based transmission type underwater acoustic detection system may include: step S101 to step S102.
Step S101: arranging a plurality of transmitting submerged labels and a plurality of receiving submerged labels according to a preset scheme;
step S102: and interacting with the transmitting submerged buoy and the receiving submerged buoy by using the processing terminal.
Specifically, as shown in fig. 5, a typical application scenario of the first system is an acoustic tripwire for long-distance early warning of a main road, and the usage mode is as follows: the underwater early warning active acoustic tripwire system is formed by alternately arranging the transmitting submerged buoy and the receiving submerged buoy along a straight line in advance in a designated sea area. The system can perform remote early warning and continuous monitoring on a target intruding into a connecting line between the transmitting submerged buoy and the receiving submerged buoy for a long time, and provides response time for my countermeasures. As shown in fig. 6, a typical application scenario of the second system is to block an acoustic fence for a desired domain, and the usage manner is as follows: and when the enemy target approaches to a connecting line between the transmitting submerged buoy and the receiving submerged buoy, the corresponding submerged buoy gives out early warning and continuously monitors, so that the blocking monitoring of the target in the area is formed. The above exemplary embodiments are merely illustrative of the manner in which the invention may be used to facilitate an understanding of the invention, and not all embodiments are intended to be used.
When the system is completely deployed, if the time of starting transmitting or starting receiving of the pre-input system is not reached, the system automatically enters a low-power-consumption duty mode. At this time, the first satellite communication machine, the second satellite communication machine, the first power supply unit and the second power supply unit of the transmitting module and the receiving module are turned on, the signal transmitting function of the transmitting module is turned off, the signal collecting unit, the second signal storage unit and the signal processing unit of the receiving module are turned off, the most basic electric quantity operation is maintained, and the man-machine interaction instruction is waited or the starting transmitting/receiving moment set by the system is reached.
Compared with the prior art, the invention has the beneficial effects that:
1. Based on the acoustic characteristics that weak targets excited by the underwater forward acoustic detection mode are difficult to eliminate in the transmission direction, the detection distance and coverage range of a detection system are effectively improved by adopting the distributed submerged buoy, the requirement on the emission power of a sound source is reduced, and the service life of the submerged buoy is prolonged.
2. The system adopts the submerged buoy with separated transmitting function and receiving function, the adjacent transceiving connecting lines of adjacent transceiving submerged buoy are detection areas, the layout of the submerged buoy with multiple times and multiple times can be adjusted according to actual scenes and requirements, and the deployment design of the detection areas of the system is more flexible.
3. Each receiving submerged buoy of the system can work independently or can work cooperatively at a processing terminal in multiple nodes.
4. Compared with the traditional aviation buoy, the system has stronger working stability under severe environment.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the above description are directional or positional relationships as indicated based on the drawings, merely to facilitate description of the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the systems or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the embodiments of the present disclosure.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the presently disclosed embodiments, the terms "mounted," "connected," "secured," and the like are to be construed broadly, as well as being either fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
In the presently disclosed embodiments, unless expressly stated and limited otherwise, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (6)
1. A transmission type underwater acoustic detection system based on a distributed submerged buoy, which is characterized in that the system comprises:
the system comprises a plurality of transmitting submerged labels, a plurality of receiving submerged labels and a processing terminal;
The transmitting submerged buoy comprises a transmitting module, a first floating body, a first mooring cable, a first acoustic releaser, a first gravity anchor block and a first watertight cabin, wherein the first gravity anchor block is arranged at the bottom of the first mooring cable, the first acoustic releaser and the first watertight cabin are arranged on the first mooring cable, the first floating body is arranged at the top of the first mooring cable, the transmitting module comprises a first main control processor, a first interface unit, a power amplifier, a matching unit, an omni-directional transducer, a first satellite communication machine, a first time service device, a first signal storage unit, a first power supply unit and a first temperature depth sensor, the first temperature depth sensor is arranged on the first mooring cable, the omni-directional transducer is arranged on the outer wall of the first watertight cabin, the first satellite communication machine is arranged in the first floating body, and the first main control processor, the first interface unit, the power amplifier, the matching unit, the first time service device, the first signal storage unit and the first power supply unit are sealed in the first watertight cabin;
The receiving submerged buoy comprises a receiving module, a second floating body, a second mooring cable, a second acoustic releaser, a second gravity anchor block and a second watertight cabin, wherein the second gravity anchor block is arranged at the bottom of the second mooring cable, the second acoustic releaser and the first watertight cabin are arranged on the second mooring cable, the second floating body is arranged at the top of the first mooring cable, the receiving module comprises a second main control processor, a second interface unit, a second satellite communication machine, a second time service unit, a hydrophone array, a signal conditioning unit, a signal acquisition unit, a second signal storage unit, a signal processing unit, a second power supply unit and a second temperature and depth sensor, the hydrophone array and the second temperature and depth sensor are arranged on the second mooring cable, the second satellite communication machine is arranged in the second floating body, and the second main control processor, the second interface unit, the second time service unit, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit and the second power supply unit are all sealed in the second watertight cabin;
the processing terminal comprises a user display interface and a terminal processor, wherein the user display interface is electrically connected with the terminal processor, the terminal processor comprises a third satellite communication machine, a data processing unit and a data storage unit, and the third satellite communication machine, the data processing unit and the data storage unit are sequentially connected.
2. The transmission type underwater acoustic detection system based on the distributed submerged buoy according to claim 1, wherein the first main control processor is respectively connected with the power amplifier, the matching unit, the omni-directional transducer, the first satellite communication machine, the first time service device, the first signal storage unit, the first power supply unit and the first temperature depth sensor through the first interface unit, the first power supply unit is respectively connected with the power amplifier, the matching unit, the omni-directional transducer, the first satellite communication machine, the first time service device, the first signal storage unit and the first temperature depth sensor through the first interface unit, the power amplifier, the matching circuit and the omni-directional transducer are mutually connected, and the first satellite communication antenna is connected with the first communication control unit.
3. The transmission type underwater acoustic detection system based on the distributed submerged buoy according to claim 1, wherein the second main control processor is respectively connected with the second satellite communication machine, the second time service device, the hydrophone array, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit, the second power supply unit and the second temperature and depth sensor through a second interface unit, and the second power supply unit is respectively connected with the second satellite communication machine, the second time service device, the hydrophone array, the signal conditioning unit, the signal acquisition unit, the second signal storage unit, the signal processing unit and the second temperature and depth sensor through a second interface unit, and the signal conditioning unit, the signal acquisition unit, the signal processing unit and the second signal storage unit are sequentially connected with the second satellite communication antenna and the second communication control unit.
4. A method of using a transmission-type underwater acoustic detection system based on a distributed submerged buoy, based on the transmission-type underwater acoustic detection system as claimed in any one of claims 1 to 3, characterized in that the method of using comprises:
Arranging a plurality of transmitting submerged labels and a plurality of receiving submerged labels according to a preset scheme;
And interacting with the transmitting submerged buoy and the receiving submerged buoy by using the processing terminal.
5. The method of claim 4, wherein the step of arranging the transmitting submerged buoy and the receiving submerged buoy according to a predetermined scheme comprises:
the transmitting submerged buoy and the receiving submerged buoy are alternately arranged along a straight line.
6. The method of claim 4, wherein the steps of arranging the transmitting submerged buoy and the receiving submerged buoy according to a predetermined scheme further comprise:
The transmitting submerged buoy and the receiving submerged buoy are alternately arranged in a polygonal shape.
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