CN220583640U - Hull structure stress monitoring system - Google Patents
Hull structure stress monitoring system Download PDFInfo
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- CN220583640U CN220583640U CN202321572713.6U CN202321572713U CN220583640U CN 220583640 U CN220583640 U CN 220583640U CN 202321572713 U CN202321572713 U CN 202321572713U CN 220583640 U CN220583640 U CN 220583640U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 239000013307 optical fiber Substances 0.000 claims abstract description 34
- 230000003287 optical effect Effects 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
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Abstract
The utility model relates to a ship structure stress monitoring system, which comprises an optical fiber grating strain gauge, an optical fiber grating thermometer, a protective cover shell, an optical cable, a plurality of line concentration boxes, an optical fiber terminal box, an optical fiber sensing analyzer and an analysis workstation, wherein the line concentration boxes are electrically connected with at least one optical fiber grating strain gauge and the optical fiber grating thermometer through the optical cable; the optical fiber terminal boxes are electrically connected with each line concentration box through a main optical cable; the optical fiber sensing analyzer is connected with the optical fiber terminal box through an optical cable; the analysis workstation is connected with the optical fiber sensing analyzer through a local area network; the protective cover shell is sleeved on the fiber grating strain gauge connected with the line concentration box and the grating thermometer. The ship structure stress monitoring system can monitor the ship structure stress in real time for a long time, evaluate the safety state of the ship structure according to the monitoring result, alarm dangerous stress, and timely deal with the ship structure stress according to the alarm by a shipman, so that the safety risk of the ship structure is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of ships, in particular to a ship body structural stress monitoring system.
Background
The hull structure safety is a basic stone for guaranteeing the operation safety of ships. In order to improve the safety of the ship structure, designers often design the ship structure by using methods such as standard calculation, finite element check, pool model test, structural member loading test and the like, and ensure that the ship strength meets the load effect in the actual stormy wave environment. There are also few scholars who install strain sensors in the structure of a real ship to study the structural stress change law in the actual sailing process.
However, the actual sailing sea wave environment has strong randomness, and a designer cannot accurately evaluate the structural stress conditions under different sea conditions, but for safety, the design is more conservative, the safety redundancy is higher, the weight of the ship body is larger, and certain economic loss is caused to the shipmen. And the ship gradually develops to large scale and special type, the hull structure becomes more and more complex, and the stress condition of the ship cannot be well analyzed by the conventional method. At present, stress monitoring by a few students is almost experimental, the monitoring positions are few, the monitoring time is short, the structural strength cannot be estimated in real time, and the ship body structure safety early warning information cannot be provided for the crews in time.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a system for monitoring the stress of a ship structure, so as to monitor the stress of the ship structure in real time for a long period of time, evaluate the installation state of the whole ship structure, and alarm dangerous stress.
The utility model provides a hull structure stress monitoring system, this system contains fiber bragg grating strainometer, fiber bragg grating thermometer, protection housing, optical cable, a plurality of line concentration box, fiber optic terminal box, optical fiber sensing analysis appearance and analysis workstation, wherein:
the line concentration box is electrically connected with at least one fiber bragg grating strain gauge and a fiber bragg grating thermometer through optical cables;
the optical fiber terminal boxes are electrically connected with each line concentration box through a main optical cable;
the optical fiber sensing analyzer is electrically connected with the optical fiber terminal box through an optical cable;
the analysis workstation is connected with the optical fiber sensing analyzer through a local area network;
the protective cover covers the fiber bragg grating strain gauge and the fiber bragg grating thermometer which are connected with the line concentration box.
Further, a groove is formed in the protection housing, and the groove is used for fixing the multi-cluster optical cable connected with the fiber bragg grating strain gauge and the fiber bragg grating thermometer.
Further, the analysis workstation comprises a measuring point type detection device, an evaluation device, a timer and a display screen.
Further, the ship power battery overload alarm system further comprises an alarm circuit, and the voice alarm is electrically connected with the analysis workstation.
Further, the alarm circuit comprises a warning lamp alarm and a voice alarm.
Compared with the prior art, the utility model has the beneficial effects that: in the ship structure stress monitoring system, a plurality of fiber grating strain gauges and fiber grating thermometers are arranged at each measuring point of a port cabin and a starboard cabin of a ship, stress deformation data and measuring point temperature data at each measuring point of the ship are collected in real time for a long time, a line concentration box collects each optical cable connected with each fiber grating strain gauge and each fiber grating thermometer into a slightly thick main optical cable, the stress deformation data and the measuring point temperature data are transmitted to an optical fiber terminal box through the main optical cable, the optical fiber terminal box analyzes the stress deformation data and the measuring point temperature data, then the analyzed stress deformation data and the analyzed measuring point temperature data are transmitted to an analysis workstation through an optical fiber sensing analyzer, the analysis workstation evaluates the analyzed stress data, and alarm information is output when the stress data is larger than a preset threshold value, so that the ship structure stress can be monitored in real time for a long time, the ship structure safety state can be evaluated according to a monitoring result, a shipman can alarm the dangerous stress, and the ship structure safety risk can be effectively reduced according to timely response to the alarm.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structural stress monitoring system for a ship hull according to the present utility model;
FIG. 2 is a schematic diagram of sensor distribution in the hull structural stress monitoring system provided by the utility model;
fig. 3 is a schematic structural diagram of an analysis workstation in the hull structural stress monitoring system provided by the utility model.
Detailed Description
The following detailed description of preferred embodiments of the utility model, taken in conjunction with the accompanying drawings, form a part hereof, and together with the description serve to explain, and not to limit the scope of, the principles of the utility model.
Example 1
The embodiment of the utility model provides a ship structure stress monitoring system, and fig. 1 is a structural schematic diagram of the ship structure stress monitoring system provided by the utility model, which is seen by referring to fig. 1 and fig. 2 of the accompanying drawings. The hull structure stress monitoring system provided by the above comprises a line concentration box 10-line concentration box 15, an optical cable 20, an optical fiber terminal box 30, an optical fiber sensing analyzer 40 and an analysis workstation 50; wherein:
the optical fiber terminal box 30 is connected with the line concentration box 10, the line concentration box 11, the line concentration box 12, the line concentration box 13, the line concentration box 14 and the line concentration box 15 through optical cables 20; the line concentration box 10, the line concentration box 11 and the line concentration box 12 are distributed in a port cabin of the ship, and the line concentration box 12, the line concentration box 13, the line concentration box 14 and the line concentration box 15 are distributed in a starboard cabin of the ship;
the optical fiber sensing analyzer 40 is connected with the optical fiber terminal box 30 through an optical cable 20;
the analysis workstation 50 is connected with the optical fiber sensing analyzer 40 through a local area network;
FIG. 2 is a diagram of a sensor profile associated with a cluster tool provided in accordance with the present utility model; the distribution diagram comprises a fiber grating strain gauge 01-03, a fiber grating thermometer 04, a protective housing 05, a line concentration box 11 and an optical cable 20, wherein:
the fiber grating strain gauge 01, the fiber grating strain gauge 02, the fiber grating strain gauge 03 and the fiber grating thermometer 04 are respectively connected with the line concentration box 11 through optical cables 20.
The protective housing 05 is sleeved on the fiber grating strain gauge 01, the fiber grating strain gauge 02, the fiber grating strain gauge 03 and the fiber grating thermometer 04.
According to the utility model, by arranging a plurality of fiber grating strain gauges and fiber grating thermometers at each measuring point of a ship, stress deformation data and measuring point temperature data at each measuring point of the ship are collected in real time for a long time, the line concentration box 10-15 collects each optical cable connected with each fiber grating strain gauge 01-03 and each fiber grating thermometer 04 into a slightly thick main optical cable, the stress deformation data and the measuring point temperature data are transmitted to the fiber terminal box 30 through the main optical cable 20, the fiber terminal box 30 analyzes the stress deformation data and the measuring point temperature data, the analyzed stress deformation data and the analyzed measuring point temperature data are transmitted to the analysis workstation 50 through the fiber optic sensing analyzer 40, the analysis workstation 50 evaluates the analyzed stress data, and when the stress data is larger than a preset threshold value, alarm information is output, so that the structural stress of the ship can be monitored in real time for a long time, the structural safety state of the ship can be evaluated according to the monitoring result, and a shipman can alarm the dangerous stress in time.
Preferably, a groove is arranged on the protection housing, and the groove is used for fixing the multi-cluster optical cable connected with the fiber bragg grating strain gauge and the fiber bragg grating thermometer.
Preferably, the analysis workstation 50 comprises a station type detection device 51, an evaluation device 52, a timer 53 and a display screen 54.
Preferably, the hull structure stress monitoring system further comprises an alarm circuit; the alarm circuit is electrically connected with the analysis workstation.
Preferably, the alarm circuit comprises a warning light alarm and a voice alarm.
The application principle of the ship structure stress monitoring system provided by the utility model is described below by combining a specific flow, wherein three fiber grating strain gauges and fiber grating thermometers are respectively arranged at each preset monitoring point so as to acquire real-time temperature data of the position of the preset monitoring point and ship structure deformation as ship structure deformation data; and transmitting the acquired ship structure deformation data and real-time temperature data to an optical fiber terminal box, transmitting the acquired ship structure deformation data and real-time temperature data to an optical fiber sensing analyzer by the optical fiber terminal box, analyzing the ship structure deformation data and the real-time temperature data by the optical fiber sensing analyzer, and transmitting the data to an analysis workstation. The analysis workstation evaluates the analyzed stress data, and outputs alarm information when the stress data is larger than a preset threshold value, so that the stress of the ship structure can be monitored in real time for a long time, the safety state of the ship structure can be evaluated according to the monitoring result, dangerous stress can be alarmed, and a shipman can deal with the treatment in time according to the alarm, so that the safety risk of the ship structure is effectively reduced.
In the application principle, the protective cover shell is sleeved on the fiber grating strain gauge and the fiber grating thermometer, and the optical cable connected with the fiber grating strain gauge and the fiber grating thermometer is fixed through the groove on the protective cover shell, so that the sensor arranged at each measuring point of the ship is prevented from being disturbed by wind and waves in the advancing process of the ship, and meanwhile, the accuracy of stress deformation data and real-time temperature data acquired by the sensor is ensured.
As shown in fig. 3, the analysis workstation 50 includes a site type detection device 51, an evaluation device 52, a timer 53, and a display screen 54.
In the application principle, the measuring point type detection device firstly carries out preprocessing on the analyzed ship structure deformation data and the real-time temperature data, and then carries out preprocessing on the analyzed ship structure deformation data and the real-time temperature data, wherein the preprocessing of the data comprises but is not limited to filtering and singular value removal; since the preset measuring point types include a local yield measuring point, a total longitudinal strength measuring point and a fatigue measuring point. The timer is set to preset a first time period, a second time period and a third time period, the analysis workstation preferably carries out real-time structural strength evaluation on the local yield measuring point and the total longitudinal strength measuring point every 2 seconds, carries out structural failure probability evaluation every 30 minutes, and carries out accumulated damage evaluation and residual life evaluation on the fatigue measuring point every 5 minutes; the assessment device is used for comparing the real-time structural strength assessment result and the structural failure probability assessment result with corresponding preset thresholds respectively so as to early warn the structural safety state of the ship body according to the comparison result, and a shipman can timely make corresponding treatment according to the early warning, the accumulated damage assessment result and the residual life assessment result, so that the structural safety risk of the ship is effectively reduced.
Further, in the application principle, the ship body structural stress monitoring system further comprises an alarm circuit, wherein the alarm circuit comprises a warning lamp alarm and a voice alarm, when the analysis workstation outputs alarm information, the alarm information is sent to the alarm circuit through the local area network, and the warning lamp alarm and the voice alarm in the alarm circuit are triggered to prompt a crew to timely process faults prompted by the alarm information.
Compared with the prior art, the utility model has the beneficial effects that:
1) The ship structure stress can be monitored in real time for a long time, the safety state of the ship structure is evaluated according to the monitoring result, the dangerous stress can be alarmed, and a shipman can timely deal with the dangerous stress according to the alarm, so that the safety risk of the ship structure is effectively reduced;
2) The system has high real-time performance and convenient monitoring and alarming.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (5)
1. The utility model provides a hull structure stress monitoring system, this system contains fiber bragg grating strainometer, fiber bragg grating thermometer, protection housing, optical cable, a plurality of line concentration box, fiber optic terminal box, optical fiber sensing analysis appearance and analysis workstation, wherein:
the line concentration box is electrically connected with at least one fiber bragg grating strain gauge and a fiber bragg grating thermometer through optical cables;
the optical fiber terminal boxes are electrically connected with each line concentration box through a main optical cable;
the optical fiber sensing analyzer is electrically connected with the optical fiber terminal box through an optical cable;
the analysis workstation is connected with the optical fiber sensing analyzer through a local area network;
the protective cover shell is sleeved on the fiber grating strain gauge and the fiber grating thermometer which are connected with the line concentration box.
2. The hull structure stress monitoring system of claim 1, wherein said protective housing is provided with grooves for securing multiple optical fiber cables connected to said fiber grating strain gauge and said fiber grating thermometer.
3. The hull structure stress monitoring system of claim 1, wherein the analysis workstation comprises a station type detection device, an assessment device, a timer, and a display screen.
4. The hull structure stress monitoring system of claim 1, wherein said hull structure stress monitoring system further comprises an alarm circuit; the alarm circuit is electrically connected with the analysis workstation.
5. The hull structure stress monitoring system of claim 4, wherein said warning circuit includes a warning light alarm and a voice alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572713.6U CN220583640U (en) | 2023-06-19 | 2023-06-19 | Hull structure stress monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572713.6U CN220583640U (en) | 2023-06-19 | 2023-06-19 | Hull structure stress monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220583640U true CN220583640U (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321572713.6U Active CN220583640U (en) | 2023-06-19 | 2023-06-19 | Hull structure stress monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220583640U (en) |
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2023
- 2023-06-19 CN CN202321572713.6U patent/CN220583640U/en active Active
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