CN113591207B - Ship shell damage assessment method and system based on distributed optical fibers - Google Patents
Ship shell damage assessment method and system based on distributed optical fibers Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 225
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010586 diagram Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 description 15
- 238000012790 confirmation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
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Abstract
The invention provides a method and a system for damage assessment of a ship shell based on distributed optical fibers, wherein the system comprises at least one optical fiber damage assessment network arranged on the inner wall of the ship shell, each optical fiber damage assessment network at least comprises two optical fibers, each optical fiber is connected with a control system, the corresponding relation between the length of each optical fiber and the coordinate position of the ship is stored in the control system, and the control system is used for determining the damage position and the damage range according to the length of each optical fiber. The invention utilizes the scene specificity of the naval vessel, applies the distributed optical fiber system to the damage positioning of the naval vessel shell, can realize the rapid positioning of the damage of the naval vessel shell and the estimation of the wound surface size, effectively ensures the safe operation of naval vessel troops, and improves the combat capability of the naval vessel troops.
Description
Technical Field
The invention belongs to the technical field of damage assessment of ship shells, and particularly relates to a ship shell damage assessment method and system based on distributed optical fibers.
Background
The naval warship army is a young and light army which grows together with the new republic in the combat sequence of the naval warship of China, is the middle strength of the naval army of China, takes part in wars such as the Western sand sea wars and the southern sand sea wars successively from the beginning of establishment, creates the singular of warship of the warship, and obtains outstanding victory. In the current world economic integration context, the importance of the ocean is self-evident, and naval forces are the dominant forces for maintaining national ocean rights. In view of the importance of the naval army, the merits of naval equipment directly affect the military warfare and the Ming nationality industry.
Modern ships are generally composed of a plurality of sealed bins, can be sealed and isolated from each other, if a commander can quickly know the information of the attacked position, the wound surface size and the like after the ships are attacked, damaged parts can be repaired in time, serious events such as loss of fight force, capsizing, sinking and the like of the ships can be avoided, and the fight force of the ships is effectively improved.
Disclosure of Invention
The invention aims at providing a ship shell damage assessment method and system based on optical fibers.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a ship shell damage assessment system based on distributed optical fiber, includes and lays in at least one optical fiber damage assessment net of ship shell inner wall, and every optical fiber damage assessment net includes two at least optical fibers, and every optical fiber all connects in control system, control system in store the length of every optical fiber and the correspondence of ship coordinate position, just control system be used for confirming damaged position and damage scope according to the length of every optical fiber.
In the above-mentioned distributed optical fiber-based ship hull damage assessment system, the control system includes one or more optical fiber damage assessment systems and a control platform connected to the optical fiber damage assessment systems, and one or both ends of all optical fibers are respectively connected to signal channels of the optical fiber damage assessment systems.
In the above-mentioned distributed optical fiber-based ship hull damage assessment system, each optical fiber damage assessment network comprises at least four optical fibers, and the control system is used for determining the damage position and the damage range according to the length of each optical fiber.
In the above-mentioned ship hull damage assessment system based on distributed optical fibers, each optical fiber damage assessment network is formed by four optical fibers which are circularly staggered, and one ends of the four optical fibers of each optical fiber damage assessment network are respectively circularly staggered from top to bottom, left to right, up to left, down to left, and left to right after being connected to the optical fiber damage assessment system.
In the ship hull damage assessment system based on the distributed optical fibers, each optical fiber damage assessment network is formed by two optical fiber convolution interlaces respectively, one optical fiber in each optical fiber damage assessment network rotates transversely, the other optical fiber rotates longitudinally, and two ends of each optical fiber are connected to two signal channels of the optical fiber damage assessment system respectively.
In the distributed optical fiber-based ship shell damage assessment system, the ship comprises a plurality of cabins, and one or more optical fiber damage assessment nets are arranged on the inner wall of the shell of each cabin;
the mesh side length of each fiber loss assessment net is 10-30cm.
According to the ship hull damage assessment method of the ship hull damage assessment system based on the distributed optical fibers, at least one optical fiber damage assessment net is arranged on the inner wall of the ship hull, each optical fiber damage assessment net is formed by interlacing at least two optical fibers, and hull damage assessment is carried out in the following mode:
s1, detecting the lengths of all optical fibers in real time, and acquiring broken optical fibers with changed lengths when the lengths of the optical fibers are detected to be changed;
s2, a corresponding relation table with the corresponding relation between the length of each optical fiber and the ship coordinate position is called;
s3, detecting the current length of the broken optical fiber, and acquiring all damage coordinates of the ship according to the current length and the corresponding relation table;
S4, determining a damage position and a damage range according to the damage coordinates.
In the method for determining damage to the ship hull based on the distributed optical fibers, in the step S4, one or more damaged areas are determined according to the optical fiber damage determination network to which all the broken optical fibers belong, and the damaged position and the damaged range of each corresponding damaged area are determined according to the damaged coordinates belonging to the corresponding optical fiber damage determination network respectively;
before step S1, pre-calibrating the corresponding relation between the length of each optical fiber and the ship coordinate position:
A. obtaining a model diagram of a ship shell;
B. Generating ship coordinates for the model map to obtain a ship model coordinate map;
C. Presetting one or more optical fiber damage assessment networks comprising the number of optical fibers and the trend of the optical fibers, an optical fiber damage assessment system connected with each optical fiber and a signal channel of the optical fiber damage assessment system in the ship model coordinate graph;
D. And C, after the user lays an optical fiber loss assessment network according to the ship model coordinate graph and checks, recording preset information in the step C.
In the above-mentioned method for damage assessment of a ship hull based on distributed optical fibers, in step S4, the damage range of the damaged area is specifically determined by:
Sequentially connecting the damage coordinates to obtain a polygon, and making a minimum circle containing the polygon as the damage range;
Or fitting all the damaged coordinate points to obtain a fitted curve as the damaged range.
In the above method for determining damage to a ship hull based on distributed optical fibers, each fiber damage determination network is formed by two or four optical fibers in a rotary and staggered manner, and step S4 includes:
s41, if part of the optical fiber in the optical fiber damage assessment network is broken, a possible damage conclusion and a possible damage position are given;
If all the optical fibers in the optical fiber damage assessment network are broken, four damage coordinates are obtained, the damage positions are determined according to the four damage coordinates, and step S42 is executed;
s42, connecting the damage coordinates in sequence to obtain a quadrilateral, and making a minimum circle containing the quadrilateral as the damage range.
The invention has the advantages that: by utilizing the scene specificity of the naval vessel, the distributed optical fiber system is applied to the damage positioning of the naval vessel shell, so that the quick positioning of the damage of the naval vessel shell and the estimation of the wound surface size can be realized, the safe operation of naval vessel troops can be effectively ensured, and the combat capability of the naval vessel troops can be improved.
Drawings
FIG. 1 is a schematic diagram showing the distribution of an optical fiber according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial naval vessel model coordinate diagram in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a distribution of optical fibers according to a second embodiment of the present invention;
description of the drawings: an optical fiber damage assessment system 1; a control platform 2; an optical fiber 3; the optical fiber impairs the network 4.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
Example 1
As shown in fig. 1, this embodiment provides an optical fiber-based damage assessment system for a ship hull, including at least one optical fiber damage assessment network 4 disposed on an inner wall of the ship hull, where each optical fiber damage assessment network 4 includes at least two optical fibers 3, in this embodiment, four optical fibers are taken as an example, and each optical fiber 3 is connected to a control system, where a correspondence between a length of each optical fiber 3 and a ship coordinate position is stored in the control system, and the control system is used to determine a damage position and a damage range according to a length of each optical fiber 3.
The control system comprises one or more optical fiber damage assessment systems 1 and a control platform 2 connected to the optical fiber damage assessment systems 1, wherein one ends of all optical fibers 3 are respectively connected to one signal channel of the optical fiber damage assessment systems 1. A ship can be divided into a plurality of areas by areas, and each area is provided with an optical fiber loss-assessment network 4. It is of course also possible to divide the compartments in units of, for example, one fiber optic damage network 4 in each compartment or one fiber optic damage network 4 on each bulkhead of each compartment that may be damaged by attack. The optical fiber damage assessment system can adopt four channels, so that each optical fiber damage assessment network 4 is connected with one optical fiber damage assessment system 1, and each optical fiber damage assessment system 1 uploads information to the control platform 2 in real time through a communication cable or an optical cable.
Specifically, in this embodiment, the fiber loss assessment net 4 is arranged according to the mesh length of about 10-30cm, for example, the fiber loss assessment net 4 is arranged according to the mesh length of 25cm, 8 meters of optical fibers 3 are needed in each square meter monitoring area, for example, a 1km 4-channel fiber loss assessment system is used, so that a ship shell of 500 square meters can be monitored in real time, and complete monitoring of one cabin shell is enough.
Specifically, in this embodiment, each fiber loss-determining net 4 is formed by respectively and circularly interlacing four optical fibers 3, and after one end of each fiber loss-determining net 4 of the four optical fibers 3 is connected to the fiber loss-determining system 1, the fiber loss-determining net 4 with meshes of about 25cm is formed by respectively and circularly interlacing from left to right up and down, from top to left and right, from bottom to top to left and from right to left and up and down.
Due to the special properties of the ship and the scene, when the ship is attacked by a missile or a torpedo, a hole is formed in the ship shell, four optical fibers 3 are cut off on the optical fiber damage assessment network 4, the length of the broken optical fibers is monitored in real time by the optical fiber damage assessment system 4, four damage coordinates can be obtained by the control platform 2 according to the corresponding relation between the length of each optical fiber 3 which is calibrated in advance and the coordinate position of the ship, and then the damage range is calculated according to the four damage coordinates. Of course, in order to improve the precision of the damage range during actual insertion, the number of optical fibers can be increased, along with the increase of the number of optical fibers, damage coordinates can also be increased under the same damage hole, and when the number of damage coordinates is increased to a certain number, a more precise damage range can be obtained by using a mode of fitting the damage coordinates points.
The damage range can be determined in two ways:
1) Sequentially connecting the damage coordinates to obtain a polygon, and making a minimum circle containing the polygon as the damage range;
2) Fitting all the damage coordinate points to obtain a fitting curve as the damage range.
The second mode may be used when the broken coordinates are more than a certain value, such as 10, and the first mode may be used when the broken coordinates are less than a certain value.
Of course, the corresponding relation between the length of each optical fiber 3 and the ship coordinate position needs to be pre-calibrated in advance, and the specific mode is as follows:
A. obtaining a model diagram of a ship shell;
B. Generating a ship coordinate for the model graph to obtain a ship model coordinate graph; the generation rule of the ship coordinates can be customized by a user or can be generated by a system according to a default rule, for example, the coordinates are ABCD, A represents the position of a cabin (area), B represents which shell wall, C represents the Y-axis length, namely the height, and D represents the X-axis length, namely the distance from the position to the left end when facing the shell wall;
C. Presetting one or more optical fiber damage assessment networks 4 comprising the number of optical fibers 3 and the trend of the optical fibers 3 in a ship model coordinate graph, and an optical fiber damage assessment system 1 and a signal channel thereof connected with each optical fiber 3; when laying, a user can mark coordinates and partial coordinate points on the ship shell according to the ship model coordinate graph, so that the user can lay the optical fibers more quickly and accurately when laying the optical fibers 3.
The corresponding preset lengths of the corresponding optical fibers are marked on a plurality of coordinate points in the ship model coordinate graph, and as the optical fibers in each optical fiber damage assessment network 4 are crossed, the corresponding preset lengths of the corresponding optical fibers are marked at the coordinate points without crossing, and the length values are marked on each optical fiber sheath, so that a user can check the length values and the marked lengths on the optical fiber sheaths by comparing the length values and the marked lengths on the optical fiber sheaths when arranging, and the arrangement is ensured to be correct. Fig. 2 is a schematic diagram of a graph of a partial ship model according to the present embodiment, where coordinates of partial coordinate points, a preset trend of one of the optical fibers, and a preset optical fiber length at the partial coordinate points are given.
D. And C, after the user lays the optical fiber loss assessment network 4 according to the ship model coordinate graph and checks the optical fiber loss assessment network, recording preset information in the step C. For example, the user can select several coordinate points after the layout is finished and compare the preset optical fiber length and the actual optical fiber length at the coordinate points to check, for example, whether the detected optical fiber length of each channel is consistent with the preset optical fiber length or not is detected, and the like, and after the checking is completed, the user can click the layout.
Specifically, the method for performing damage assessment on the ship shell in the embodiment is as follows:
S1, detecting the lengths of all optical fibers 3 in real time, and acquiring broken optical fibers 3 with all the lengths being changed (namely acquiring all channels with the detected lengths being changed) when detecting that the lengths of the optical fibers 3 are changed (namely detecting that the lengths of the optical fibers with the channels are changed);
s2, a corresponding relation table with the corresponding relation between the length of each optical fiber 3 and the ship coordinate position is called;
S3, detecting the current length of the broken optical fiber 3, and acquiring all damage coordinates of the ship according to the current length and the corresponding relation table;
S4, determining one or more damaged areas according to the optical fiber damage-assessment network 4 to which all the broken optical fibers 3 belong, and determining the damaged position and the damaged range of each corresponding damaged area according to the damaged coordinates belonging to the corresponding optical fiber damage-assessment network 4 respectively, namely determining one damaged area for each optical fiber damage-assessment network 4, wherein the damaged position and the damaged range of each damaged area are calculated according to the damaged coordinates of the optical fiber damage-assessment network 4 of the corresponding damaged area respectively.
Further, the step S4 specifically includes:
S41, if part of optical fibers 3 in an optical fiber damage assessment network 4 are broken, a possible damage conclusion and possible damage positions are given; because of the particularity of the battle, the battle is in a hole shape with a high probability of appearing after being attacked, and all the optical fibers can be torn off, but the situation that one or two optical fibers are not broken is not excluded, so that a conclusion of possible breakage is given when part of the optical fibers are detected to be broken.
If all the optical fibers 3 in one optical fiber damage determination network 4 are broken, four damage coordinates are obtained, the damage positions are determined according to the four damage coordinates, and step S42 is executed;
S42, connecting the damage coordinates in sequence to obtain a quadrangle, and making a minimum circle containing the quadrangle as a damage range.
Under the condition that the optical fiber damage-assessment network is broken due to attack, the accurate coordinate position and the damage area of the damage part can be greatly reproduced, and the problems that the ship can not be timely repaired, and finally the ship is overturned, sunk, fight force is lost and the like due to the fact that the damage position and the damage area cannot be quickly and accurately obtained can be effectively avoided. The scheme can realize the confirmation of the damage range by using two optical fibers to form the optical fiber damage assessment network 4 in a special distribution mode, and one network only occupies four channels of the optical fiber damage assessment system 4, so that the system is prevented from being complicated, the system structure is simplified, and meanwhile, the acquisition speed of the damage position and the damage range can be accelerated due to the small number of the optical fibers, so that more time is striven for the maintenance of ships.
Example two
As shown in fig. 3, the present embodiment is similar to the embodiment in that each fiber loss determination network 4 is formed by respectively rotating and interlacing two optical fibers 3, and one optical fiber 3 in each fiber loss determination network 4 rotates transversely, the other optical fiber 3 rotates longitudinally, and two ends of each optical fiber 3 are respectively connected to two signal channels of the fiber loss determination system 1. The optical fiber damage assessment system 1 obtains the lengths of the optical fibers 3 from two ends respectively, when the optical fibers are not broken, the lengths of the optical fibers detected by two channels connected with the two ends of the same optical fiber are the same, and after the optical fibers are broken, the optical fibers detected by the two channels are different in high probability. If the naval vessel is attacked and is blasted into a hole, two optical fibers are cut off, four damage coordinates are obtained, and the control platform 2 can determine the damage range according to the four damage coordinates.
The determination of the damage range is similar to that of the embodiment, namely, the damage coordinates are sequentially connected to obtain a quadrangle, and a minimum circle containing the quadrangle is made as the damage range.
The scheme can realize the confirmation of the damage range by only using two optical fibers to form the optical fiber damage assessment network 4 in another special distribution mode, and one network only occupies four channels of the optical fiber damage assessment system 4, so that the system is prevented from being complicated, the system structure is simplified, and meanwhile, the acquisition speed of the damage position and the damage range can be accelerated due to the small number of the optical fibers, so that more time is striven for the maintenance of ships.
The method for measuring the length of the optical fiber 3 may be selected by those skilled in the art according to the need, such as a laser phase method, a mode locking method, and the like.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the fiber optic loss system 1 is used more herein; a control platform 2; an optical fiber 3; the optical fibers detract from the terms network 4, but do not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (8)
1. The damage assessment system for the ship shell based on the distributed optical fibers is characterized by comprising at least one optical fiber damage assessment network (4) distributed on the inner wall of the ship shell, wherein each optical fiber damage assessment network (4) at least comprises two optical fibers (3), each optical fiber (3) is connected to a control system, the corresponding relation between the length of each optical fiber (3) and the ship coordinate position is stored in the control system, and the control system is used for determining the damage position and the damage range according to the length of each optical fiber (3);
The control system comprises one or more optical fiber damage assessment systems (1) and a control platform (2) connected with the optical fiber damage assessment systems (1);
each optical fiber loss assessment network (4) is formed by the rotary interlacing of two optical fibers (3), one optical fiber (3) in each optical fiber loss assessment network (4) transversely rotates, the other optical fiber (3) longitudinally rotates, and two ends of each optical fiber (3) are respectively connected to two signal channels of the optical fiber loss assessment system (1).
2. The distributed optical fiber-based ship hull damage assessment system according to claim 1, wherein each optical fiber damage assessment network (4) is formed by rotary interlacing of four optical fibers (3), and one ends of the four optical fibers (3) of each optical fiber damage assessment network (4) are connected to the optical fiber damage assessment system (1) and then rotary-mode from top to bottom, left to right, up to down, right to left, up to down, and left to right, so as to form the optical fiber damage assessment network (4).
3. A distributed optical fiber based vessel hull damage assessment system according to claim 1 or 2, wherein said vessel comprises a plurality of cabins, and wherein one or more optical fiber damage assessment nets (4) are arranged on the hull inner wall of each cabin.
4. A distributed optical fiber based vessel hull damage assessment system according to claim 3, wherein the mesh side of each optical fiber damage assessment net (4) is 10-30cm.
5. A method for vessel hull damage assessment based on a distributed optical fiber based vessel hull damage assessment system according to any of claims 1-4, characterized in that at least one optical fiber damage assessment net (4) is laid on the inner wall of the vessel hull, each optical fiber damage assessment net (4) is composed of at least two optical fibers (3) in a staggered manner, and hull damage assessment is performed by:
s1, detecting the lengths of all optical fibers (3) in real time, and acquiring all broken optical fibers (3) with changed lengths when detecting that the lengths of the optical fibers (3) are changed;
S2, a corresponding relation table with the corresponding relation between the length of each optical fiber (3) and the ship coordinate position is called;
S3, detecting the current length of the broken optical fiber (3), and acquiring all damage coordinates of the ship according to the current length and the corresponding relation table;
S4, determining a damage position and a damage range according to the damage coordinates.
6. The method for evaluating the damage of the ship hull based on the distributed optical fibers (3) according to claim 5, wherein in the step S4, one or more damaged areas are determined according to the optical fiber damage evaluating network (4) to which all the broken optical fibers (3) belong, and the damaged position and the damaged range of each corresponding damaged area are respectively determined according to the damaged coordinates belonging to the corresponding optical fiber damage evaluating network (4);
before step S1, pre-calibrating the corresponding relation between the length of each optical fiber (3) and the ship coordinate position:
A. obtaining a model diagram of a ship shell;
B. Generating ship coordinates for the model map to obtain a ship model coordinate map;
C. One or more optical fiber damage assessment networks (4) comprising the number of optical fibers (3) and the trend of the optical fibers (3) are preset in the naval vessel model coordinate graph, and an optical fiber damage assessment system (1) and a signal channel thereof are connected with each optical fiber (3);
D. And C, laying an optical fiber loss assessment network (4) according to a ship model coordinate graph by a user, checking and recording preset information in the step C.
7. The method of loss assessment of a ship hull based on distributed optical fibers (3) according to claim 6, characterized in that in step S4 the damage range of the damaged area is determined in particular by:
Sequentially connecting the damage coordinates to obtain a polygon, and making a minimum circle containing the polygon as the damage range;
Or fitting all the damaged coordinate points to obtain a fitted curve as the damaged range.
8. The method for loss assessment of a ship hull based on distributed optical fibers (3) according to claim 7, wherein each optical fiber loss assessment network (4) is composed of two or four optical fibers (3) in a rotary interleaving manner, and step S4 includes:
S41, if part of optical fibers (3) in an optical fiber damage assessment network (4) are broken, a possible damage conclusion and possible damage positions are given;
If all the optical fibers (3) in the optical fiber damage assessment network (4) are broken, four damage coordinates are obtained, the damage positions are determined according to the four damage coordinates, and step S42 is executed;
s42, connecting the damage coordinates in sequence to obtain a quadrilateral, and making a minimum circle containing the quadrilateral as the damage range.
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