Underwater defense interface damage sensing and underwater data acquisition networking system

Abstract

The invention provides an underwater defense interface damage sensing and underwater data acquisition networking system. The system comprises a shore-based information acquisition cabinet 1, an underwater communication conversion cabin 2 and an underwater data acquisition cabin 3, the shore-based information acquisition cabinet 1 is connected with the plurality of underwater communication conversion cabins 2; the single set of underwater communication conversion cabin 2 is cascaded with the plurality of underwater data acquisition cabins 3; the shore-based information acquisition cabinet 1 is used for receiving a data result sent by the underwater communication conversion cabin 2, and projecting the relative position of an underwater damaged point to a digital model for display in combination with the deployment form of underwater equipment; the underwater communication conversion cabin 2 is used for acquiring and converging data results of the underwater data acquisition cabin 3 and forwarding the data results to the shore-based information acquisition cabinet 1; and the underwater data acquisition cabin 3 is used for calculating a curve of cable length and reflection intensity based on an embedded deployment damage point sensing algorithm and judging cable breakpoints.

Description

Technical Field

[0001] The present invention relates to the field of underwater security technology, and in particular to an underwater defense interface damage perception and underwater data acquisition networking system. Background Art

[0002] In order to protect special coastal facilities such as ports, docks, coastal power facilities, military facilities, etc., it is common to deploy passive underwater arresting facilities at key locations with risks of breakthrough and invasion. The arranged arresting facilities include underwater steel gates, hard grilles or underwater flexible interception nets, etc. For passive underwater arresting facilities, the natural damage and failure cannot be discovered in time, resulting in an increased risk of unfriendly invasion, or the alarm information cannot be triggered immediately when underwater human damage and invasion occur, which are potential threats that may cause losses to important sensitive national facilities.

[0003] Affected by the particularity of the underwater environment, existing solutions include using underwater optical cable weaving blocking nets and underwater cables as terminals to sense underwater vibration and fracture signals. Using non-metallic optical cables that meet the requirements of underwater mechanics to weave an interception net has a relatively long maintenance cycle and service life. It can also be used as an intrusion sensing signal source by analyzing the vibration state of the optical fiber; however, due to the unpredictable underwater environment, this solution is easily affected by waves and tides in the seawater, causing vibrations and generating clutter, which puts forward high technical requirements for the noise reduction, analysis, classification of the optical fiber vibration results, and the reduction of false alarms of the overall system. Another solution is to use underwater optoelectronic composite cables or underwater cables as underwater intrusion signal sensing sources. Since the existing solutions do not carry out detailed design of the underwater cables and underwater networking methods of this solution, its construction cost is high, the circuit design is complex, and the service life is limited. In addition, since the existing underwater fracture sensing solutions have not modularized the underwater equipment involved, and have not clearly proposed the underwater related algorithm logic, it is not conducive to on-site maintenance and troubleshooting after the system is built, and it cannot be efficiently combined with the underwater passive interception facilities that have been built, and the initial construction cost is high. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide an underwater defense interface damage perception and underwater data acquisition networking system.

[0005] The first aspect of the present invention provides an underwater defense interface damage perception and underwater data collection networking system, comprising: a shore-based information collection cabinet 1, an underwater communication conversion cabin 2 and an underwater data collection cabin 3;

[0006] The shore-based information collection cabinet 1 is connected to a plurality of the underwater communication conversion cabins 2; a single set of the underwater communication conversion cabin 2 is cascaded with a plurality of the underwater data collection cabins 3;

[0007] The shore-based information collection cabinet 1 is used to receive the data results sent by the underwater communication conversion cabin 2, and project the relative positions of the underwater damage points onto the digital model for display in combination with the deployment form of the underwater equipment;

[0008] The underwater communication conversion cabin 2 is used to collect and aggregate the data results of the underwater data collection cabin 3 and forward them to the shore-based information collection cabinet 1;

[0009] The underwater data acquisition cabin 3 is used to calculate the curve of cable length and reflection intensity based on the embedded damage point perception algorithm, determine the cable breakpoint, and obtain data results.

[0010] Optionally, in a first implementation of the first aspect of the present invention, the shore-based information collection cabinet 1 includes: a protection cabinet 11, a data processing module 12, a video collection module 13, an environment control module 14 and a power supply module 15;

[0011] The data processing module 12, the video acquisition module 13, the environment control module 14 and the power supply module 15 are installed inside the protection cabinet 11;

[0012] The data processing module 12 is used to receive the data results sent by the underwater communication conversion cabin 2, and project the relative positions of the underwater damage points onto the digital model for display in combination with the deployment form of the underwater equipment;

[0013] The video acquisition module 13 is used to acquire and store underwater video information, and forward the acquired and stored underwater video information to the device terminal;

[0014] The environmental control module 14 is used to sense the temperature inside the protective cabinet 11 and automatically adjust it;

[0015] The power supply module 15 includes a power supply conversion 151 and an emergency backup power supply 152, which are respectively used for upstream circuit adaptation and emergency power maintenance.

[0016] Optionally, in a second implementation of the first aspect of the present invention, the protective cabinet 11 is made of rust-proof metal material, with the surface treated with an anti-corrosion process, and the cabinet protection grade is IP56.

[0017] Optionally, in a third implementation of the first aspect of the present invention, the underwater communication conversion cabin 2 includes a conversion cabin watertight shell 21, a conversion cabin upper end cover 22, a first power adapter module 23, a communication conversion module 24 and a state perception module 25;

[0018] The conversion cabin watertight shell 21 is sealed and installed with the conversion cabin upper end cover 22;

[0019] The first power adapter module 23, the communication conversion module 24 and the state sensing module 25 are installed in the sealed space formed by the conversion cabin watertight shell 21 and the conversion cabin upper end cover 22;

[0020] The first power adapter module 23 is used for power conversion of shore-based power supply, energy output of the lower cabin and power supply of other equipment in the underwater communication conversion cabin;

[0021] The communication conversion module 24 is used for data reception and photoelectric conversion of the lower cabin;

[0022] The state sensing module 25 is used to integrate a temperature sensor and a humidity sensor to sense the temperature and humidity in the sealed space.

[0023] Optionally, in a fourth implementation of the first aspect of the present invention, the underwater communication conversion cabin 2 further includes an underwater optoelectronic composite connector 221 and an underwater electrical connector 222;

[0024] The power supply and communication conversion inside and outside the sealed space formed by the conversion cabin watertight shell 21 and the conversion cabin upper end cover 22 is completed by the underwater optoelectronic composite connector 221 and the underwater electrical connector 222.

[0025] Optionally, in a fifth implementation of the first aspect of the present invention, the underwater data acquisition cabin 3 includes: a watertight shell 31 of the acquisition cabin, an upper end cover 32 of the acquisition cabin, a second power adapter module 33, a data exchange module 34, an electrical signal processing unit 35, a state perception module 36 and a device information conversion module 37;

[0026] The watertight shell 31 of the collection cabin is sealed and installed with the upper end cover 32 of the collection cabin;

[0027] The second power adapter module 33, the data exchange module 34, the electrical signal processing unit 35, the state sensing module 36 and the device information conversion module 37 are installed in the sealed space formed by the watertight shell 31 of the collection cabin and the upper end cover 32 of the collection cabin;

[0028] The second power adapter module 33 is used to supply power to the electrical equipment in the cabin and the downstream cascaded cabins;

[0029] The data exchange module 34 is used for collecting and transmitting the sensing data, calculation result information and the data uploaded by the downstream cascaded cabins;

[0030] The electrical signal processing unit 35 is used to calculate the curve of cable length and reflection intensity based on the embedded deployed damage point sensing algorithm to determine the cable breakpoint;

[0031] The state sensing module 36 is used to obtain the temperature and humidity information in the cabin in real time;

[0032] The device information conversion module 37 is used to perform format conversion and data processing on the collected signals.

[0033] Optionally, in a sixth implementation of the first aspect of the present invention, the upper end cover 32 of the collection cabin is installed with an underwater electrical connector 321, a one-to-many underwater electrical connector assembly 322 and an underwater sensing conductor 323;

[0034] The underwater electrical connector 321 is used to cascade other collection cabin watertight shells 31;

[0035] The one-to-many underwater electrical connector assembly 322 is used to connect multiple underwater sensing conductors 323 and transmit the pulse signal of the underwater sensing conductors 323 through the cabin;

[0036] The underwater sensing conductor 323 is used to sense underwater pulses and analyze the pulse model.

[0037] Optionally, in a seventh implementation of the first aspect of the present invention, one end of the one-to-many underwater electrical connector assembly 322 is a multi-core connector, which is connected to the upper end cover 32 of the collection cabin, and the other end is vulcanized into multiple 2-core wires, and the 2-core wires are also vulcanized and installed with watertight connectors, which can be plugged with the 2-core watertight connector of the underwater sensing conductor 323;

[0038] The underwater sensing conductor 323 is a single multi-layer structure design, which is surrounded by an underwater waveguide wire filled with aramid reinforcing wire, tinned copper conductor, polyethylene insulation layer, polyimide film and modified polyether TPU sheath layer by layer from the inside to the outside, and finally vulcanized and installed with 2-core watertight connectors at the positive and negative ends.

[0039] Optionally, in an eighth implementation of the first aspect of the present invention, the electrical signal processing unit 35 includes: a signal generator 351, a signal receiver 352 and a signal processing module 353;

[0040] The electric signal processing unit 35 is connected to the one-to-many underwater electric connector assembly 322 of the upper end cover 32 of the collection cabin and the underwater sensing conductor 323; wherein the signal generator 351 is connected to the positive pole of the underwater sensing conductor 323, and the signal receiver 352 is connected to the negative pole of the underwater sensing conductor;

[0041] After power-on, the signal generator 351 periodically generates a low-voltage pulse with a specific pulse width. The pulse propagates along the wire to the impedance mismatch point to generate reflection, returns to the measurement point and is collected by the signal receiver 352. The signal processing module 353 uses an embedded damage point perception algorithm to complete filtering, processing and conversion, and obtains a curve of cable length and reflection intensity, thereby determining the cable breakpoint.

[0042] Optionally, in a ninth implementation of the first aspect of the present invention, the embedded deployment damage point perception algorithm includes:

[0043] The signal generator 351 periodically generates low-voltage pulses of a specific frequency, which propagate along the wire to the impedance mismatch point, generate multiple superimposed pulse reflections and are collected by the signal receiver 352;

[0044] The signal receiver 352 transmits the collected signal to the information processing module 353, and the signal processing module 353 pre-processes the collected signal, including noise filtering and amplification processing;

[0045] Wherein, the noise filtering includes: averaging the high-frequency reflected waveforms sampled multiple times;

[0046] The amplification process includes: for low-intensity pulse reflection signals, amplification process is required after receiving them;

[0047] After obtaining the feedback waveform, the reflection position of the high-frequency pulse signal is calculated according to the propagation speed of the electrical signal in the corresponding medium. The propagation speed of the electrical signal in the conductive medium is Where c is the speed of light in a vacuum, ∈r is the relative permittivity of the medium, and μr is the relative magnetic permeability of the medium;

[0048] According to the time difference ΔT between the emission of the low-frequency pulse and the reception of the reflected pulse, the distance S = ΔT*V / 2 of the reflected pulse from the emission point is obtained. According to the actual envelope mode of the underwater sensing conductor 323 at the underwater defense interface, the reflection positions of multiple high-frequency pulses are calculated and mapped to the physical positions of the underwater defense interface according to the envelope mode, thereby realizing real-time perception and alarm of the damaged position of the underwater defense interface.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] 1. The present invention proposes an underwater defense interface damage perception and underwater data collection networking system to achieve online perception and alarm of damage, rupture or other damage states of various defense interfaces including underwater rigid and flexible underwater defense structures; the present invention can be deployed based on the existing underwater passive interception facilities, and can also be deployed simultaneously with new facilities;

[0051] 2. The present invention uses the underwater Internet of Things system as the design basis, takes the underwater sensing conductor as the information sensing end, establishes a damage point sensing algorithm, and combines the underwater sensing conductor deployment form to realize the sensing and positioning of the underwater damaged position;

[0052] 3. The present invention adopts modular, miniaturized, and multi-sensor-connectable product design, providing a low-cost, low-energy, and flexible networking warning system construction solution for the safety of offshore and shallow underwater key defense interfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0054] Figure 1 The present invention is a schematic diagram of the assembly of an underwater defense interface damage perception and underwater data acquisition networking system.

[0055] Figure 2 It is a schematic diagram of the internal components of the underwater communication conversion cabin of the present invention.

[0056] Figure 3 It is a schematic diagram of the upper end cover of the conversion cabin of the present invention.

[0057] Figure 4 It is a schematic diagram of the internal components of the underwater data acquisition cabin of the present invention.

[0058] Figure 5 This is a schematic diagram of the upper end cover of the collection cabin of the present invention.

[0059] Figure 6 This is a schematic diagram of the underwater sensing conductor design of the present invention.

[0060] Figure 7 This is a calculation flow chart of the damage point perception algorithm of the present invention.

[0061] Figure 8 It is a schematic diagram of various system cascading solutions of the present invention.

[0062] Fig. 9 This is a schematic diagram of a case study of underwater protection deployment for different interfaces according to the present invention.

[0063] Among them, 1-shore-based information collection cabinet; 11-protection cabinet; 12-data processing module; 13-video collection module; 14-environmental control module; 15-power module; 151-power conversion; 152 emergency backup power supply; 2-underwater communication conversion cabin; 21-conversion cabin watertight shell; 22-conversion cabin upper cover; 221-underwater optoelectronic composite connector; 222-underwater electrical connector; 23-first power adapter module; 24-communication conversion module; 25-state perception module; 3-underwater data collection cabin; 31-collection cabin watertight shell; 32-collection cabin upper cover; 321-underwater electrical connector; 322-one-to-many underwater electrical connector assembly; 323-underwater sensing conductor; 33-second power adapter module; 34-data exchange module; 35-electrical signal processing unit; 351-signal generator; 352-signal receiver; 353-signal processing module; 36-state perception module. DETAILED DESCRIPTION

[0064] The embodiment of the present invention provides an underwater defense interface damage perception and underwater data collection networking system, comprising: a shore-based information collection cabinet single set 1, an underwater communication conversion cabin single set 2 and an underwater data collection cabin single set 3; the shore-based information collection cabinet single set 1 is connected to a plurality of underwater communication conversion cabin single sets 2; a single set of underwater communication conversion cabin single set 2 is cascaded with a plurality of underwater data collection cabin single sets 3; the shore-based information collection cabinet single set 1 is used to receive the data results sent by the underwater communication conversion cabin single set 2, and project the relative position of the underwater damage point onto a digital model for display in combination with the deployment form of the underwater equipment; the underwater communication conversion cabin single set 2 is used to collect and aggregate the data results of the underwater data collection cabin single set 3, and forward them to the shore-based information collection cabinet single set 1; the underwater data collection cabin single set 3 is used to calculate the curve of cable length and reflection intensity based on the damage point perception algorithm deployed in an embedded manner, and judge the cable breakpoint. The present invention solves the problem that natural damage failure cannot be discovered in time.

[0065] The terms "first", "second", "third", "fourth", etc., in the specification and claims of the present invention and the above-mentioned drawings (if any), are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1-9 The first embodiment of the underwater defense interface damage perception and underwater data acquisition networking system in the embodiment of the present invention includes:

[0067] There is one single set of shore-based information collection cabinet, one single set of underwater communication conversion cabin, and one single set of underwater data collection cabin;

[0068] A single set 1 of the shore-based information collection cabinet is connected to a single set 2 of several underwater communication conversion cabins; a single set 2 of the underwater communication conversion cabin is cascaded with a single set 3 of several underwater data collection cabins;

[0069] Among them, a single set of underwater communication conversion cabin 2 sets can also be connected to the same equipment, and a single set of shore-based information collection cabinet 1 set can be connected to an underwater link to achieve the purpose of modular expansion.

[0070] Among them, the shore-based information collection cabinet single set 1 single set is composed of a protective cabinet single set 11 single set, a data processing module single set 12 single set, a video collection module single set 13 single set, an environmental control module single set 14 single set, and a power module single set 15 single set. Among them, the protective cabinet single set 11 single set is made of rust-proof metal material, the surface is treated with anti-corrosion technology, and the cabinet protection level is IP56; the internally installed data processing module single set 12 single set has photoelectric conversion and data collection functions, which is used to receive the pulse signal processing results of multiple underwater data collection cabin single set 3 single set gathered by the underwater communication conversion cabin single set 2 single set through the electrical signal processing unit single set 35 single set, establish a standard database and customizable judgment logic, and combine the deployment form of underwater equipment to project the relative position of underwater damage points onto the digital model for display.

[0071] Furthermore, a video acquisition module 13 is installed inside the shore-based information collection cabinet 1, and the video acquisition module 13 can collect, store and forward underwater video signals to a device terminal reachable by a network route in a networking environment. An environmental control module 14 is installed inside the shore-based information collection cabinet 1, and the environmental control module 14 is mainly used for temperature sensing and automatic adjustment inside the cabinet; the power supply module 15 is mainly composed of a power supply conversion 151 and an emergency backup power supply 152, and is used for upstream circuit adaptation and emergency power maintenance.

[0072] Among them, the underwater communication conversion cabin single set 2 single set is composed of the conversion cabin watertight shell single set 21 single set, the conversion cabin upper end cover single set 22 single set, the first power adapter module single set 23 single set, the communication conversion module single set 24 single set and the status perception module single set 25 single set. After the combination, the watertight pressure resistance strength is higher than 2MPa, and the communication conversion bandwidth is not less than 2Gbp / s. It can collect and aggregate the underwater data collection cabin single set 3 single set of data results and forward them to the shore; the conversion cabin watertight shell single set 21 single set is made of 2507 duplex stainless steel, and has a metal bracket inside to fix each electrical module; the conversion cabin upper end cover single set 22 single set and the conversion cabin watertight shell single set 21 single set are sealed and installed, and the internal and external power supply and communication conversion are completed by the underwater optoelectronic composite connector single set 221 single set and the underwater electrical connector single set 222 single set.

[0073] The underwater communication conversion cabin single set 2 is equipped with a first power adapter module single set 23, which is used for power conversion of the shore-based power supply, energy output of the lower cabin and power supply of other equipment in the underwater communication conversion cabin single set 2; the underwater communication conversion cabin single set 2 is equipped with a communication conversion module single set 24, which is used for data reception and photoelectric conversion of the lower cabin; the underwater communication conversion cabin single set 2 is equipped with a state perception module single set 25, and the state perception module 25 is integrated with temperature and humidity sensors.

[0074] Among them, the underwater data acquisition cabin single set 3 single set is composed of a single set of watertight shell of the acquisition cabin single set 31 single set, a single set of upper cover of the acquisition cabin single set 32 ​​single set, a single set of second power adapter module single set 33 single set, a single set of data exchange module single set 34 single set, a single set of electrical signal processing unit single set 35 single set, and a single set of state perception module single set 36 single set; the single set of watertight shell of the acquisition cabin single set 31 single set has a metal equipment bracket inside to install various electrical equipment, and after being combined with the single set of upper cover of the acquisition cabin single set 32 ​​single set, the watertight pressure resistance strength is higher than 2MPa; the single set of upper cover of the acquisition cabin single set 32 ​​single set is equipped with underwater An electrical connector single set 321 single set, a one-to-many underwater electrical connector assembly single set 322 single set and an underwater sensing conductor single set 323 single set; the underwater electrical connector single set 321 single set is used to cascade other collection cabin watertight shell single sets 31 single sets, the one-to-many underwater electrical connector assembly single set 322 single set can connect to multiple underwater sensing conductor single sets 323 single sets and transmit the pulse model of the underwater sensing conductor single set 323 single set through the cabin; the collection cabin upper end cover single set 32 ​​single set can also be installed with more through-cabin watertight connectors to mount more types of underwater sensors.

[0075] Furthermore, a second power adapter module 33 is installed in the underwater data acquisition cabin 3, and the second power adapter module 33 is mainly used for power supply functions of electrical equipment in the cabin and downstream cascade cabins; a data exchange module 34 is installed in the underwater data acquisition cabin 3, which is mainly used for collection and transmission of sensing data, calculation result information in the cabin and uploaded data of downstream cascade cabins; an electrical signal acquisition unit 35 is installed in the underwater data acquisition cabin 3, which consists of a signal generator 351, a signal receiver 352, and an information processing module 353; wherein, a damage point perception algorithm is embedded in the signal processing module 353; a state perception module 36 is also installed in the underwater data acquisition cabin 3 to obtain temperature and humidity information in the cabin in real time.

[0076] Furthermore, the underwater data acquisition cabin single set 3 single set can be connected to multiple underwater sensing conductors 323 through the single set 32 ​​single set of the upper cover of the acquisition cabin and through the single set 322 single set of a one-piece multi-underwater electrical connector assembly; one end of the single set 322 single set of the one-piece multi-underwater electrical connector assembly is a multi-core connector, which is connected to the single set 32 ​​single set of the upper cover of the acquisition cabin, and the other end is vulcanized into multiple 2-core wires, and the 2-core wires are also vulcanized and equipped with a watertight connector, which can be plugged with the 2-core watertight connector of the single set 323 single set of the underwater sensing conductor; the single set 323 single set of the underwater sensing conductor is a single-piece with a multi-layer structure design, which is respectively aramid reinforcing wire filling, tinned copper conductor, polyethylene insulation layer, polyamide The underwater waveguide wire wrapped layer by layer by imide film and modified polyether TPU sheath is surrounded and finally vulcanized and installed with 2-core watertight connectors at both ends of the positive and negative electrodes. The sensing distance of a single underwater sensing conductor single set 323 single set underwater active electric pulse exceeds 5000 meters; when performing destruction perception and damage alarm on the underwater defense interface, the underwater wire can be surrounded and fixed at the easy-to-breakthrough positions of underwater gates and grilles, or multiple underwater data acquisition cabins single set 3 single set networking can be used, and a large area of ​​it can be surrounded and fixed at all positions of underwater fortifications. For underwater flexible arresting facilities, the underwater sensing conductor can be woven into its key position through weaving to deal with the cutting and breakthrough of underwater frogmen or UUVs.

[0077] Furthermore, the underwater data acquisition cabin 3 is installed with an electrical signal processing unit 35, which is composed of a signal generator 351, a signal receiver 352, and an information processing module 353; the signal processing unit 35 is connected to a one-to-many underwater electrical connector assembly 322 and an underwater sensing conductor 323 of the upper end cover 32 of the acquisition cabin, wherein the signal generator 351 is connected to the positive pole of the underwater sensing conductor 323, and the signal receiver is connected to the negative pole of the underwater sensing conductor 323. After the system is powered on, the signal generator single set 351 single set periodically generates a low-voltage pulse with a specific pulse width. The pulse propagates along the wire to the impedance mismatch point to generate reflection, and returns to the measurement point to be collected by the signal receiver single set 352 single set. After filtering, processing and conversion by the damage point perception algorithm of the information processing module single set 353 single set, a curve of cable length and reflection intensity is calculated to determine the cable breakpoint.

[0078] The damage point sensing algorithm includes four steps: S1 signal excitation, S2 noise filtering, S3 data conversion, and S4 position calculation:

[0079] In the S1 signal excitation process, the signal generator single set 351 single set periodically generates a low-voltage pulse of a specific frequency, and the pulse propagates along the wire to the impedance mismatch point, such as a short circuit point, a fault point, an intermediate joint, a tail disconnection, etc., generating multiple superimposed pulse reflections and being collected by the signal receiver single set 352 single set;

[0080] After the collected signal is transmitted to the single set 353 of the input information processing module, it enters the S2 noise filtering process, which averages the high-frequency reflected waveforms sampled multiple times to reduce the random noise on the collected signal and improve the vertical resolution to reduce environmental and noise interference;

[0081] After completing the S2 noise filtering, the S3 data amplification process is entered. For low-intensity pulse reflection signals, they need to be amplified after receiving them. For example, the signal emission intensity is taken as 0 value, and the α% of the average intensity of the reflected signal intensity is taken as the baseline. The data below the baseline is judged as noise and summarized as 0 value, and the data above the baseline is set to 1 value, and the discontinuous 1 value is cleared as noise and occasional error results. Then, the high-frequency reflection pulse of the abnormal point of the single set 323 single set line of the underwater sensing conductor can be obtained; after obtaining the feedback waveform, the S4 position calculation process is entered. According to the propagation speed of the electrical signal in the corresponding medium, the reflection position of the high-frequency pulse signal is calculated. The propagation speed of the electrical signal in the conductive medium is Where c is the speed of light in a vacuum, which is approximately 3×10 8m / s, ∈r is the relative dielectric constant of the medium, μr is the relative magnetic permeability of the medium, and according to the time difference ΔT between the emission of the low-frequency pulse (rising edge) and the reception of the reflected pulse, the distance S = ΔT*V / 2 from the emission point of the reflected pulse can be obtained. According to the actual envelope mode of the single set 323 of the underwater sensing conductor at the underwater defense interface, the reflection positions of multiple high-frequency pulses can be calculated and mapped to the physical position of the underwater defense interface according to the envelope mode, thereby realizing real-time perception and alarm of the damaged position of the underwater defense interface.

[0082] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device, or unit can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0083] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0084] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An underwater defense interface damage perception and underwater data acquisition networking system, characterized in that: include: A shore-based information collection cabinet (1), an underwater communication conversion cabin (2), and an underwater data collection cabin (3); The shore-based information collection cabinet (1) is connected to a plurality of the underwater communication conversion cabins (2); a single set of the underwater communication conversion cabin (2) is cascaded with a plurality of the underwater data collection cabins (3); The shore-based information collection cabinet (1) is used to receive the data results sent by the underwater communication conversion cabin (2), and project the relative positions of underwater damage points onto the digital model for display in combination with the deployment form of the underwater equipment; The underwater communication conversion cabin (2) is used to collect and aggregate data results from the underwater data collection cabin (3) and forward them to the shore-based information collection cabinet (1); The underwater data collection cabin (3) is used to calculate the curve of cable length and reflection intensity based on the embedded damage point perception algorithm, determine the cable breakpoint, and obtain data results.

2. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 1 is characterized in that: The shore-based information collection cabinet (1) comprises: a protection cabinet (11), a data processing module (12), a video collection module (13), an environment control module (14) and a power supply module (15); The data processing module (12), the video acquisition module (13), the environment control module (14) and the power supply module (15) are installed inside the protection cabinet (11); The data processing module (12) is used to receive the data results sent by the underwater communication conversion cabin (2), and project the relative positions of the underwater damage points onto the digital model for display in combination with the deployment form of the underwater equipment; The video acquisition module (13) is used to acquire and store underwater video information, and forward the acquired and stored underwater video information to the device terminal; The environmental control module (14) is used to sense the temperature inside the protective cabinet (11) and automatically adjust it; The power supply module (15) comprises a power supply conversion (151) and an emergency backup power supply (152), which are respectively used for upstream circuit adaptation and emergency power maintenance.

3. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 2 is characterized in that: The protective cabinet (11) is made of rust-proof metal material, with its surface treated with an anti-corrosion process, and the cabinet protection grade is IP56.

4. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 1 is characterized in that: The underwater communication conversion cabin (2) comprises a conversion cabin watertight shell (21), a conversion cabin upper end cover (22), a first power adapter module (23), a communication conversion module (24) and a state sensing module (25); The watertight shell (21) of the conversion cabin is sealed and installed with the upper end cover (22) of the conversion cabin; The first power adapter module (23), the communication conversion module (24) and the state sensing module (25) are installed in a sealed space formed by the conversion cabin watertight shell (21) and the conversion cabin upper end cover (22); The first power adapter module (23) is used for power conversion of shore-based power supply, energy output of the lower cabin and power supply of other equipment in the underwater communication conversion cabin; The communication conversion module (24) is used for data reception and photoelectric conversion of the lower cabin; The state sensing module (25) is used to integrate a temperature sensor and a humidity sensor to sense the temperature and humidity in the sealed space.

5. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 4 is characterized in that: The underwater communication conversion cabin (2) further comprises an underwater photoelectric composite connector (221) and an underwater electrical connector (222); The external power supply and communication conversion in the sealed space formed by the conversion cabin watertight shell (21) and the conversion cabin upper end cover (22) is completed by the underwater photoelectric composite connector (221) and the underwater electrical connector (222).

6. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 1 is characterized in that: The underwater data acquisition cabin (3) comprises: a watertight housing (31) of the acquisition cabin, an upper end cover (32) of the acquisition cabin, a second power adapter module (33), a data exchange module (34), an electrical signal processing unit (35), a state sensing module (36) and a device information conversion module (37); The watertight shell (31) of the collection cabin is sealed and installed with the upper end cover (32) of the collection cabin; The second power adapter module (33), the data exchange module (34), the electrical signal processing unit (35) and the state sensing module (36) are installed in a sealed space formed by the watertight shell (31) of the collection cabin and the upper end cover (32) of the collection cabin; The second power adapter module (33) is used to supply power to electrical equipment in the cabin and downstream cascaded cabins; The data exchange module (34) is used for collecting and transmitting the sensing data, calculation result information in the cabin and the data uploaded by the downstream cascade cabin; The electrical signal processing unit (35) is used to calculate the curve of cable length and reflection intensity based on the embedded damage point sensing algorithm to determine the cable breakpoint; The state sensing module (36) is used to obtain the temperature and humidity information inside the cabin in real time.

7. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 6 is characterized in that: The upper end cover (32) of the collection cabin is equipped with an underwater electrical connector (321), a one-to-many underwater electrical connector assembly (322) and an underwater sensing conductor (323); The underwater electrical connector (321) is used to cascade other watertight housings (31) of collection cabins; The one-to-many underwater electrical connector assembly (322) is used to connect a plurality of underwater sensing conductors (323) and transmit the pulse signal of the underwater sensing conductors (323) through the cabin; The underwater sensing conductor (323) is used to sense underwater pulses and analyze the pulse model.

8. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 7 is characterized in that: One end of the one-to-many underwater electrical connector assembly (322) is a multi-core connector, which is connected to the upper end cover (32) of the collection cabin, and the other end is vulcanized into multiple 2-core wires. The 2-core wires are also vulcanized and equipped with watertight connectors, which can be plugged with the 2-core watertight connector on the underwater sensing conductor (323); The underwater sensing conductor (323) is a single multi-layer structure, which is surrounded by an underwater waveguide wire filled with aramid reinforcing wire, tinned copper conductor, polyethylene insulation layer, polyimide film and modified polyether TPU sheath layer by layer from the inside to the outside, and finally vulcanized and installed with 2-core watertight connectors at the positive and negative ends.

9. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 8 is characterized in that: The electrical signal processing unit (35) comprises: a signal generator (351), a signal receiver (352) and a signal processing module (353); The electric signal processing unit (35) is connected to a one-to-many underwater electric connector assembly (322) of the upper end cover (32) of the collection cabin and the underwater sensing conductor (323); wherein the signal generator (351) is connected to the positive pole of the underwater sensing conductor (323), and the signal receiver (352) is connected to the negative pole of the underwater sensing conductor; After power is turned on, the signal generator (351) periodically generates a low-voltage pulse with a specific pulse width. The pulse propagates along the wire to the impedance mismatch point to generate reflection, returns to the measurement point and is collected by the signal receiver (352). The signal processing module (353) uses an embedded damage point sensing algorithm to complete filtering, processing and conversion, and obtains a curve of cable length and reflection intensity, thereby determining the cable breakpoint.

10. The underwater defense interface damage perception and underwater data acquisition networking system according to claim 9 is characterized in that: The embedded deployment damage point perception algorithm includes: The signal generator (351) periodically generates a low-voltage pulse of a specific frequency, which propagates along the wire to the impedance mismatch point, generates multiple superimposed pulse reflections and is collected by the signal receiver (352); The signal receiver (352) transmits the collected signal to the information processing module (353), and the signal processing module (353) pre-processes the collected signal, including noise filtering and amplification processing; Wherein, the noise filtering includes: averaging the high-frequency reflected waveforms sampled multiple times; The amplification process includes: for low-intensity pulse reflection signals, amplification process is required after receiving them; After obtaining the feedback waveform, the reflection position of the high-frequency pulse signal is calculated according to the propagation speed of the electrical signal in the corresponding medium. The propagation speed of the electrical signal in the conductive medium is Where c is the speed of light in a vacuum, ∈r is the relative permittivity of the medium, and μr is the relative magnetic permeability of the medium; According to the time difference ΔT between the emission of the low-frequency pulse and the reception of the reflected pulse, the distance S=ΔT*V / 2 of the reflected pulse from the emission point is obtained. According to the actual envelope mode of the underwater sensing conductor (323) at the underwater defense interface, the reflection positions of multiple high-frequency pulses are calculated and mapped to the physical position of the underwater defense interface according to the envelope mode, thereby realizing real-time perception and alarm of the damaged position of the underwater defense interface.

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