CN115586030B - An inflatable life raft system status monitoring and analysis method - Google Patents

Abstract

The invention belongs to the technical field of inflatable life raft monitoring, and particularly discloses a method for monitoring and analyzing the state of an inflatable life raft system. The inflatable life raft system state monitoring and analyzing method comprises the steps of marking a current inflatable life raft system to be monitored as a target monitoring life raft, and acquiring basic related information of the target monitoring life raft; monitoring and evaluating the released state and the unreleased state of the target monitoring life raft respectively; carrying out comprehensive state analysis on the target monitoring life raft, thereby confirming the rescue safety level corresponding to the target monitoring life raft and simultaneously carrying out information feedback; the invention effectively solves the problem that the prior art has certain limitation, meets the rescue requirements of the target monitoring life raft in two rescue scenes of the sea bottom and the sea surface, breaks the unilateral performance in the current single-dimension monitoring mode, realizes the comprehensive monitoring of the target monitoring life raft from the pre-release state to the post-release state, and has higher practicability.

Description

An inflatable life raft system condition monitoring and analysis method

Technical field

The invention belongs to the technical field of inflatable life raft monitoring and relates to a method for monitoring and analyzing the status of an inflatable life raft system.

Background technique

Inflatable life rafts are widely used in marine rescue due to their compact structure, good safety, easy movement, simple operation and rapid formation. They have become one of the key tools for rescue at sea. In order to ensure the inflatability The corresponding rescue effect of the life raft requires monitoring and analysis of its system status.

Generally speaking, the state of the inflatable life raft system is divided into working state and non-working state, that is, the state after release and the state before release. Currently, the state monitoring of the inflatable life raft system focuses on the state after release, that is, it focuses on the state after release. It is obvious that the current technology still has certain limitations regarding the airtight state and pressure-resistant state of the inflatable life raft, which are specifically reflected in the following aspects: 1. The inflatable life raft is in a fixed state before release. The stability of its placement directly affects the release effect of the subsequent inflatable life raft, thereby affecting the rescue effect of the subsequent inflatable life raft. Currently, there is a lack of monitoring of this dimension, and the rescue efficiency of the inflatable life raft cannot be guaranteed. , and cannot guarantee the stability of the rescue process of the inflatable life raft.

2. Maritime rescue includes undersea rescue and sea surface rescue. The sea environment is relatively changeable, and waves will interfere with the floating speed and floating path of the inflatable life raft. Currently, only basic performances such as air tightness are monitored. The applicable scenarios are relatively limited, and it does not meet the monitoring needs of deep seabed rescue, nor can it ensure the smoothness and safety of inflatable life raft deep water rescue. At the same time, it cannot provide a reliable rescue direction for coordinated rescue of multiple rescue activities on the seabed, thus The accuracy of rescue positioning of other collaborative rescue methods cannot be guaranteed.

3. The current technology is a single-dimensional monitoring and analysis, which is relatively one-sided and inconvenient to understand the risks and accidents of the use of inflatable life rafts, and thus cannot guarantee the reliability and stability of subsequent rescue activities of inflatable life rafts. At the same time, it is single-dimensional. Dimensional monitoring and analysis methods cannot minimize the safety hazards in the subsequent use of inflatable life rafts, and thus cannot reduce the rescue failure rate of inflatable life rafts.

Contents of the invention

In view of this, in order to solve the problems raised in the above background technology, a state monitoring and analysis method of the inflatable liferaft system is now proposed.

The purpose of the present invention can be achieved through the following technical solutions: The present invention provides a method for monitoring and analyzing the status of an inflatable liferaft system. The method includes the following steps: Step 1. Acquisition of liferaft basic related information: Obtain the current inflatable liferaft system to be monitored The basic relevant information corresponding to the life raft system, and the current inflatable life raft system to be monitored is recorded as the target monitoring life raft.

Step 2. Life raft release status monitoring: Monitor the release status of the target monitoring life raft to obtain the floating status information of the target monitoring life raft when it is released.

Step 3. Life raft release state analysis: Evaluate the release state corresponding to the target monitoring life raft, obtain the release state safety assessment index corresponding to the target monitoring life raft, and record it as .

Step 4. Monitor the released and unreleased state of the life raft: Monitor the unreleased state of the target monitoring life raft, and obtain the external status information and placement status information of the target monitoring life raft when it is in the unreleased state.

Step 5. Analysis of the released and unreleased state of the life raft: Evaluate the unreleased state corresponding to the target monitoring life raft, and obtain the unreleased state safety assessment index corresponding to the target monitoring life raft, recorded as .

Step 6. Comprehensive status analysis of the life raft: Conduct a comprehensive status analysis of the target monitoring life raft, and confirm the rescue safety level corresponding to the target monitoring life raft.

Step 7. Life raft comprehensive status feedback: Feedback the rescue safety level corresponding to the target monitoring life raft to the corresponding safety management personnel of the target monitoring life raft.

Further, the release state of the target monitoring life raft is monitored. The specific monitoring process is: according to the set unit depth interval, the floating experiment of the water body in different depth layers is carried out, and the target monitoring life raft is corresponding to the water body in each depth layer. The internal air pressure of the target monitoring life raft is monitored to obtain the corresponding internal air pressure of the target monitoring life raft in the water body at each depth layer.

Monitor the corresponding external contour of the target monitoring life raft in the water body at each depth layer to obtain the corresponding contour volume of the target monitoring life raft in the water body at each depth layer.

Statistics are made on the time it takes for the target monitoring life raft to reach the water body at each depth layer, and the time it takes for the target monitoring life raft to reach the water body at each depth layer is obtained.

According to the set floating route, the target monitoring life raft is subjected to a floating experiment, and the corresponding real-time position of the target monitoring life raft in the water body floating experiment at each depth layer is monitored through the pressure sensing sensor arranged in the target monitoring life raft, and the target monitoring life raft is obtained. The corresponding real-time position of the life raft in the water body at each depth layer.

The internal air pressure, contour volume, real-time position and time to reach the water body at each depth layer corresponding to the water body at each depth layer are used as targets to monitor the buoyancy status information of the life raft when it is released.

Further, the release state corresponding to the target monitoring life raft is evaluated. The specific evaluation process includes the following steps: A1. Extract the target monitoring life raft at each depth layer from the buoyancy state information of the target monitoring life raft when it is released. The corresponding internal air pressure of the water body, from which the internal air density of the target monitoring life raft corresponding to the water body at each depth layer is calculated, recorded as ,d represents the depth layer number,/> .

A2. Extract the contour volume corresponding to the water body of the target monitoring life raft in each depth layer from the buoyancy state information of the target monitoring life raft when it is released, and calculate the deformation degree of the target monitoring life raft corresponding to the water body in each depth layer. , recorded as .

A3. Based on the corresponding internal air density and deformation degree of the target monitoring life raft in the water body of each depth layer, set the route deviation weight of the target monitoring life raft in the water body of each depth layer.

A4. Extract the corresponding real-time position of the target monitoring life raft in the water body at each depth layer from the buoyancy status information of the target monitoring life raft when it is released, and analyze the corresponding floating route deviation of the target monitoring life raft in the water body at each depth layer. difference, and record it as .

A5. Based on the floating route deviation difference of the target monitoring life raft corresponding to the water body at each depth layer and the route deviation weight corresponding to the target monitoring life raft in the water body of each depth layer, the route status evaluation index corresponding to the target monitoring life raft is obtained through analysis of the analytical formula. and recorded as .

A6. Extract the time it takes for the target monitoring life raft to reach the water body at each depth layer from the floating state information of the target monitoring life raft when it is released, and calculate the corresponding floating speed of the target monitoring life raft in the water body at each depth layer. And calculate the target monitoring life raft buoyancy status evaluation index, and record it as .

A7. Based on the target monitoring life raft corresponding route status evaluation index and floating state assessment index/> , through the calculation formula/> Analyze and obtain the safety assessment index corresponding to the release state of the target monitoring life raft ,/> Respectively expressed as the release state evaluation proportion weight corresponding to the set route state and buoyancy state,/> Corresponds to the floating correction factor for the set inflatable life raft.

Further, the route deviation weight setting of the target monitoring life raft in the water body at each depth layer is described. The specific setting process is: locating the standard air density from the basic relevant information corresponding to the target monitoring life raft, recorded as , the target is to monitor the internal air density of the life raft corresponding to the water body at each depth layer/> and deformation/> Import calculation formula , get the course deviation weight of the target monitoring life raft corresponding to the water body in the dth depth layer/> ,/> Respectively expressed as the proportional weight factors corresponding to the set internal air density and deformation degree,/> are respectively the allowable deformation degree differences corresponding to the set inflatable liferaft in the dth depth layer water body,/> It is the allowable degree of deformation corresponding to the set inflatable life raft in the water body at the dth depth layer.

Further, the specific calculation formula of the route status evaluation index corresponding to the target monitoring life raft is: , where,/> It is the deviation difference of the reference course corresponding to the set inflatable life raft in the water body of the dth depth layer,/> Compensation factors are evaluated for the set route status.

Further, the monitoring of the unreleased state of the target monitoring life raft is specifically used to monitor the corresponding external state and placement state of the target monitoring life raft, and obtain the external state information and placement status of the target monitoring life raft when it is in the unreleased state. Place status information.

Among them, the external status information of the target monitoring liferaft when it is not released specifically includes the number of broken wire compression belts, the number of broken wires corresponding to each broken wire compression belt, the number of load-bearing impacts and the damage area.

Among them, the placement status information of the target monitoring life raft when it is not released specifically includes the tension at both ends of each compression belt and the pressure value corresponding to each pressure monitoring point.

Further, the unreleased state corresponding to the target monitoring liferaft is evaluated. The specific evaluation process includes the following steps: The first step is to locate the number of load-bearing impacts and the The damage area is recorded as and/> , analyze and obtain the shell status safety assessment index corresponding to the target monitoring life raft, recorded as/> .

The second step is to locate the number of broken wire compression belts and the number of broken wires corresponding to each broken wire compression belt from the external status information of the target monitoring life raft when it is in the unreleased state, and obtain the corresponding number of the target monitoring life raft through analysis formula analysis. The state safety assessment index of the compression belt is recorded as .

The third step is to locate the tension at both ends of each compression belt and the pressure value corresponding to each pressure monitoring point from the placement status information of the target monitoring life raft when it is not released, and analyze and obtain the corresponding placement status of the target monitoring life raft. Safety assessment index, recorded as .

The fourth step is to monitor the shell status safety assessment index corresponding to the target monitoring life raft. , compression belt status safety assessment index/> and placement status safety assessment index/> Import calculation formula , get the unreleased state safety assessment index corresponding to the target monitoring life raft/> , where,/> They are the external state evaluation proportional weight factors corresponding to the set shell state and compression belt state,/> The correction factors are evaluated respectively for the set external structural state of the inflatable liferaft and the unreleased state corresponding to the placement state, and e represents a natural constant.

Further, the specific analysis formula of the shell status safety assessment index corresponding to the target monitoring life raft is: , where,/> They are the corresponding proportion weight factors of the number of bearing impacts and the damage area,/> They are the set number of reference load-bearing impacts and the reference damage area respectively.

Further, the above analysis obtains the placement state safety assessment index corresponding to the target monitoring life raft. The specific analysis process is as follows: The tension at both ends corresponding to each compression belt in the target monitoring life raft is recorded as and/> ,r represents the compression belt number,/> .

Record the pressure values corresponding to each pressure monitoring point of the target monitoring life raft as ,p represents the pressure monitoring point number,/> , and screen out the maximum pressure value and minimum pressure value from the pressure values corresponding to each pressure monitoring point of the target monitoring life raft. At the same time, the average pressure value corresponding to the target monitoring life raft is obtained through average calculation, and the maximum pressure value and the minimum pressure value are calculated. And the average pressure value is recorded as/> and/> .

The initial placement pressure and the initial setting tension of the compression belt are extracted from the basic relevant information corresponding to the target monitoring life raft, and are recorded as and/> , through the analytical formula Analyze and obtain the safety assessment index of the placement status corresponding to the target monitoring life raft/> ,/> It is the allowable difference in tension between the two ends corresponding to the set compression belt, Respectively expressed as the proportional weight factor corresponding to the set tension deviation difference at both ends of the compression belt,/> Expressed as the proportional weighting factor corresponding to the deviation difference between the two ends of the compression belt,/> Respectively expressed as the proportional weighting factors corresponding to the set pressure deviation differential pressure and pressure uniformity of the inflatable life raft,/> The set pressure deviation corresponding to the permissible placement of the liferaft.

Further, the described comprehensive status analysis of the target monitoring life raft is carried out, and the rescue safety level corresponding to the target monitoring life raft is confirmed. The specific execution process is: the unreleased state safety assessment index and the released state safety assessment corresponding to the target monitoring life raft are Exponential substitution , get the comprehensive status safety assessment index corresponding to the target monitoring life raft/> ,/> is the set comprehensive status assessment correction factor,/> Allowable float factor for the set liferaft status,/> They are respectively expressed as the proportional weight factors corresponding to the set unreleased state and released state.

Compare the comprehensive status safety assessment index corresponding to the target monitoring life raft with the set status safety assessment index range corresponding to each rescue safety level to obtain the comprehensive status safety assessment index corresponding to the target monitoring life raft.

Compared with the existing technology, the beneficial effects of the present invention are as follows: The present invention provides a state monitoring and analysis method for an inflatable liferaft system by obtaining basic relevant information corresponding to the target monitoring liferaft, and analyzing the conditions corresponding to the target monitoring liferaft. The pre-release and post-release states are monitored and analyzed, thereby confirming the rescue safety level corresponding to the target monitoring life raft, and feeding it back to the corresponding safety management personnel, effectively solving certain limitations of the current technology and meeting the requirements The target monitors the rescue needs of the life raft in the two major rescue scenarios of the seabed and the sea surface, and breaks the one-sidedness of the current single-dimensional monitoring method, achieving comprehensive monitoring of the target monitoring life raft from the state before release to the state after release, and at the same time intuitively It demonstrates the use risks and unexpected conditions of the target monitoring life raft, thus ensuring the stability of the subsequent rescue activities of the target monitoring life raft. On the other hand, it also minimizes the potential safety hazards during the subsequent use of the target monitoring life raft. This effectively reduces the subsequent rescue failure rate and rescue damage rate of the target monitoring life raft, and is highly practical.

By monitoring and evaluating the unreleased state corresponding to the target monitoring life raft, the present invention effectively reduces the stability and smoothness of the subsequent release of the target monitoring life raft, thereby providing improved rescue effects and rescue efficiency for the subsequent target monitoring life raft. It provides a strong guarantee and effectively highlights the safety issues that exist when the target monitoring life raft is placed. It provides reliable improvement directions for subsequent target monitoring life raft designers, and also ensures the stability of the target monitoring life raft rescue process.

When evaluating the corresponding release state of the target monitoring life raft, the present invention evaluates the two dimensions of the floating speed and floating route of the target monitoring life raft corresponding to the water body in different depth layers, thereby effectively satisfying the requirements of the target monitoring life raft in the water body at different depths. Monitoring requirements for water body rescue at different depths, thereby improving the reliability and safety of the target monitoring life raft in actual rescue scenarios, and also effectively ensuring the smoothness and safety of the target monitoring life raft rescue in water bodies at different depths It also provides a reliable rescue direction for maritime collaborative rescue, which greatly improves the accuracy of rescue positioning of other collaborative rescue methods.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings needed to describe the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic flow chart of the implementation steps of the method of the present invention.

Detailed ways

The following will be implemented in conjunction with the present invention. The above contents are only examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in similar ways. As long as it does not deviate from the concept of the invention or exceed the scope defined in the claims, it should all fall within the protection scope of the present invention.

Please refer to Figure 1. The present invention provides a method for monitoring and analyzing the status of an inflatable liferaft system. The method includes the following steps: Step 1. Acquisition of liferaft basic related information: Obtain the current inflatable liferaft system to be monitored. Corresponding basic relevant information, and record the inflatable liferaft system currently to be monitored as the target monitoring liferaft.

Specifically, the basic relevant information includes the number of equipped compression belts, contour volume, rated internal air pressure, standard air density, rated load-bearing impact force, as well as initial placement pressure and initial setting tension of the compression belts.

Step 2. Life raft release status monitoring: Monitor the release status of the target monitoring life raft to obtain the floating status information of the target monitoring life raft when it is released.

Specifically, the release status of the target monitoring life raft is monitored. The specific monitoring process is as follows: according to the set unit depth interval, the floating experiment of water bodies in different depth layers is performed, and the corresponding internal parts of the target monitoring life raft in the water body of each depth layer are monitored. The air pressure is monitored to obtain the internal air pressure corresponding to the water body of the target monitoring life raft in each depth layer.

Monitor the corresponding external contour of the target monitoring life raft in the water body of each depth layer to obtain the corresponding contour volume of the target monitoring life raft in the water body of each depth layer.

Statistics are made on the time it takes for the target monitoring life raft to reach the water body at each depth layer, and the time it takes for the target monitoring life raft to reach the water body at each depth layer is obtained.

According to the set floating route, the target monitoring life raft is subjected to a floating experiment, and the corresponding real-time position of the target monitoring life raft in the water body floating experiment at each depth layer is monitored through the pressure sensing sensor arranged in the target monitoring life raft, and the target monitoring life raft is obtained. The corresponding real-time position of the life raft in the water body at each depth layer.

The internal air pressure, contour volume, real-time position and time to reach the water body at each depth layer corresponding to the water body at each depth layer are used as targets to monitor the buoyancy status information of the life raft when it is released.

Step 3. Life raft release state analysis: Evaluate the release state corresponding to the target monitoring life raft, obtain the release state safety assessment index corresponding to the target monitoring life raft, and record it as .

Specifically, the release state corresponding to the target monitoring life raft is evaluated. The specific evaluation process includes the following steps: A1. Extract the water body corresponding to the target monitoring life raft in each depth layer from the buoyancy state information of the target monitoring life raft when it is released. The internal air pressure of the target monitoring life raft is calculated from the corresponding internal air density of the water body at each depth layer, recorded as ,d represents the depth layer number,/> .

Understandably, the specific calculation process of the internal air density corresponding to the target monitoring life raft in the water body at each depth layer is: extract the rated internal air pressure from the basic relevant information corresponding to the target monitoring life raft, recorded as , through the analytical formula Analyze and obtain the corresponding internal air density of the target monitoring life raft in the water body at each depth layer,/> Indicates the internal air pressure corresponding to the water body of the target monitoring life raft in the dth depth layer,/> It is the allowable internal air pressure deviation corresponding to the set inflatable liferaft,/> Correction factor for the set air tightness evaluation.

A2. Extract the contour volume corresponding to the water body of the target monitoring life raft in each depth layer from the buoyancy state information of the target monitoring life raft when it is released, and calculate the deformation degree of the target monitoring life raft corresponding to the water body in each depth layer. , recorded as .

Understandably, the specific calculation formula for the corresponding deformation degree of the target monitoring life raft in the water body at each depth layer is: ,/> Expressed as the contour volume corresponding to the water body of the target monitoring life raft at the dth depth layer,/> Monitor life raft profile volume for target,/> It is the allowable volume difference corresponding to the set inflatable life raft,/> A correction factor is evaluated for the set degree of deformation.

A3. Based on the corresponding internal air density and deformation degree of the target monitoring life raft in the water body of each depth layer, set the route deviation weight of the target monitoring life raft in the water body of each depth layer.

Specifically, the route deviation weight of the target monitoring life raft is set in the water body of each depth layer. The specific setting process is: locating the standard air density from the basic relevant information corresponding to the target monitoring life raft, recorded as , the target is to monitor the internal air density of the life raft corresponding to the water body at each depth layer/> and deformation/> Import calculation formula , get the course deviation weight of the target monitoring life raft corresponding to the water body in the dth depth layer/> ,/> Respectively expressed as the proportional weight factors corresponding to the set internal air density and deformation degree,/> are respectively the allowable deformation degree differences corresponding to the set inflatable liferaft in the dth depth layer water body,/> It is the allowable degree of deformation corresponding to the set inflatable life raft in the water body at the dth depth layer.

A4. Extract the corresponding real-time position of the target monitoring life raft in the water body at each depth layer from the buoyancy status information of the target monitoring life raft when it is released, and analyze the corresponding floating route deviation of the target monitoring life raft in the water body at each depth layer. difference, and record it as .

For example, the analysis results in the deviation difference of the floating route corresponding to the target monitoring life raft in the water body at each depth layer. The specific analysis process is: import the corresponding real-time position of the target monitoring life raft in the water body at each depth layer into the set reference floating three-dimensional In the coordinate system, the corresponding three-dimensional position coordinates of the target monitoring life raft in the water body at each depth layer are obtained, recorded as , t represents the three-dimensional position coordinate number, /> , and at the same time, mark the ascending route in the reference ascending three-dimensional coordinate system, and locate the corresponding set three-dimensional position coordinates of the target monitoring life raft in the water body at each depth layer, recorded as /> .

By analyzing the formula , calculate the deviation difference of the floating course corresponding to the target monitoring life raft in the water body at each depth layer,/> is the set position deviation correction factor.

A5. Based on the floating course deviation difference of the target monitoring life raft in the water body of each depth layer and the course deviation weight of the target monitoring life raft corresponding to the water body of each depth layer, through the analytical formula Analyze and obtain the route status evaluation index corresponding to the target monitoring life raft/> , where,/> It is the deviation difference of the reference course corresponding to the set inflatable life raft in the water body of the dth depth layer,/> Compensation factors are evaluated for the set route status.

A6. Extract the time it takes for the target monitoring life raft to reach the water body at each depth layer from the floating status information corresponding to the target monitoring life raft. From this, calculate the corresponding floating speed of the target monitoring life raft in the water body at each depth layer, and calculate Monitor the buoyancy status evaluation index of the life raft out of the target and record it as .

Understandably, the specific calculation formula for the floating speed of the target monitoring life raft corresponding to the water body at each depth layer is: ,/> Expressed as the floating speed corresponding to the target monitoring life raft in the water body at the dth depth layer,/> is the set unit depth,/> Expressed as the time corresponding to the target monitoring life raft reaching the dth depth layer water body,/> Expressed as the allowable floating error speed corresponding to the target monitoring life raft in the water body of the dth depth layer.

It can also be understood that the specific calculation formula of the target monitoring life raft buoyancy state evaluation index is: ,/> It is the reference floating speed corresponding to the set inflatable liferaft in the water body at the dth depth layer,/> It is the allowed floating speed difference corresponding to the set inflatable liferaft in the water body of the dth depth layer,/> A correction factor is evaluated for the set buoyancy of the inflatable liferaft.

A7. Based on the target monitoring life raft corresponding route status evaluation index and floating state assessment index/> , through the calculation formula/> Analyze and obtain the safety assessment index corresponding to the release state of the target monitoring life raft ,/> Respectively expressed as the release state evaluation proportion weight corresponding to the set route state and buoyancy state,/> Corresponds to the floating correction factor for the set inflatable life raft.

When evaluating the corresponding release state of the target monitoring life raft, the embodiment of the present invention evaluates the two dimensions of the target monitoring life raft's corresponding floating speed and floating route in the water body at different depths, thereby effectively satisfying the target monitoring life raft requirements. Monitoring requirements for raft rescue in water bodies at different depths, thereby improving the reliability and safety of target monitoring life rafts in actual rescue scenarios, and also effectively ensuring the smoothness of target monitoring life raft rescues in water bodies at different depths and safety, and also provides a reliable rescue direction for maritime collaborative rescue, thereby greatly improving the accuracy of rescue positioning of other collaborative rescue methods.

Step 4. Monitor the released and unreleased state of the life raft: Monitor the unreleased state of the target monitoring life raft, and obtain the external status information and placement status information of the target monitoring life raft when it is in the unreleased state.

Specifically, monitoring the unreleased state of the target monitoring life raft is specifically used to monitor the corresponding external state and placement state of the target monitoring life raft, and obtain the external state information and placement state information of the target monitoring life raft when it is in the unreleased state. .

Among them, the external status information of the target monitoring liferaft when it is not released specifically includes the number of broken wire compression belts, the number of broken wires corresponding to each broken wire compression belt, the number of load-bearing impacts and the damage area.

Among them, the placement status information of the target monitoring life raft when it is not released specifically includes the tension at both ends of each compression belt and the pressure value corresponding to each pressure monitoring point.

For example, the external state corresponding to the target monitoring life raft is monitored. The specific monitoring process is: B1. Extract the rated load-bearing impact force from the basic relevant information corresponding to the target monitoring life raft, and thereby set the impact experiment group settings.

B2. Conduct a cyclic impact test on the target monitoring life raft. When the target monitoring life raft is damaged during a certain impact test, the impact test will be stopped. The cumulative number of impact tests corresponding to the target monitoring experimental group in this impact test group will be counted and used as a load-bearing impact test. times, and extract the damage area of the target monitoring life raft when it was damaged in the impact experimental group.

Understandably, the specific evaluation process for damage to the target monitoring life raft is as follows: collect external three-dimensional images of the target monitoring life raft during the impact test group corresponding to each external pressure test, and locate the target monitoring life raft from the collected three-dimensional images. The three-dimensional contour volume corresponding to the damaged area of the raft during each impact test is calculated through the analytical formula damage compliance index. Calculate the damage compliance index of the target monitoring life raft in each impact test, and compare the damage compliance index of the target monitoring life raft in each impact test with the set damage compliance index. If the target monitoring life raft is in a certain If the damage compliance index during the first impact test reaches the set damage compliance index, it will be determined that the target monitoring life raft was damaged during the impact test.

It should be noted that the evaluation method of impact damage of the target monitoring liferaft in the impact test is the same as the evaluation method of damage in the external pressure test, so no further description will be given.

B3. Collect images of each compression belt corresponding to the target monitoring life raft, and locate the number of broken wire compression belts corresponding to the target monitoring life raft and the number of broken wires corresponding to each broken wire compression belt from the collected images.

In another example, the specific monitoring process of monitoring the corresponding placement status of the target monitoring life raft is: using the tension sensors installed at the two ends of each compression belt in the target monitoring life raft to measure the tension at both ends of each compression belt. Monitor and obtain the tension at both ends corresponding to each compression belt in the target monitoring life raft.

Lay out pressure monitoring points in the contact area between the target monitoring life raft and the installation base, and install pressure sensors at each pressure monitoring point. Then, monitor the pressure through the pressure sensors installed in each pressure monitoring point to obtain the target monitoring life raft. The pressure value corresponding to each pressure monitoring point.

Step 5. Analysis of the released and unreleased state of the life raft: Evaluate the unreleased state corresponding to the target monitoring life raft, and obtain the unreleased state safety assessment index corresponding to the target monitoring life raft, recorded as .

Specifically, the unreleased state corresponding to the target monitoring liferaft is evaluated. The specific evaluation process includes the following steps: The first step is to locate the number of load-bearing impacts and the Damage area, by analytical formula Analyze and obtain the shell status safety assessment index corresponding to the target monitoring life raft/> , where,/> They are the corresponding proportion weight factors of the number of bearing impacts and the damage area,/> They are the set number of reference load-bearing impacts and the reference damage area respectively.

The second step is to locate the number of broken wire compression belts and the number of broken wires corresponding to each broken wire compression belt from the external status information of the target monitoring liferaft when it is not released, and use the analytical formula Analyze and obtain the safety assessment index of the corresponding compression belt status of the target monitoring life raft/> , where,/> Respectively expressed as the evaluation proportion weighting factors corresponding to the number of broken wire compression tapes and the number of compressed wires to be broken,/> Respectively expressed as the number of broken wire compression straps and the number of compression straps equipped on the target monitoring life raft,/> Monitor the number of broken wires corresponding to the f-th broken wire holding belt in the life raft, f represents the number of the broken wire holding belt,/> ,/> It is the allowed number of broken wires corresponding to the set compression belt in the inflatable life raft.

The third step is to locate the tension at both ends of each compression belt and the pressure value corresponding to each pressure monitoring point from the placement status information of the target monitoring life raft when it is not released, and analyze and obtain the corresponding placement status of the target monitoring life raft. Safety assessment index, recorded as .

Specifically, the placement state safety assessment index corresponding to the target monitoring life raft is obtained through analysis. The specific analysis process is: the tension at both ends corresponding to each compression belt in the target monitoring life raft is recorded as and/> ,r represents the compression belt number,/> .

Record the pressure values corresponding to each pressure monitoring point of the target monitoring life raft as ,p represents the pressure monitoring point number,/> , and screen out the maximum pressure value and minimum pressure value from the pressure values corresponding to each pressure monitoring point of the target monitoring life raft, and at the same time obtain the average pressure value corresponding to the target monitoring life raft through average calculation, and combine the maximum pressure value and the minimum pressure value And the average pressure value is recorded as/> and/> .

The initial placement pressure and the initial setting tension of the compression belt are extracted from the basic relevant information corresponding to the target monitoring life raft, and are recorded as and/> , through the analytical formula Analyze and obtain the safety assessment index of the placement status corresponding to the target monitoring life raft/> ,/> It is the allowable difference in tension between the two ends corresponding to the set compression belt, Respectively expressed as the proportional weight factor corresponding to the set tension deviation difference at both ends of the compression belt,/> Expressed as the proportional weighting factor corresponding to the deviation difference between the two ends of the compression belt,/> Respectively expressed as the proportional weighting factors corresponding to the set pressure deviation differential pressure and pressure uniformity of the inflatable life raft,/> The set pressure deviation corresponding to the permissible placement of the liferaft.

The fourth step is to monitor the shell status safety assessment index corresponding to the target monitoring life raft. , compression belt status safety assessment index/> and placement status safety assessment index/> Import calculation formula , get the unreleased state safety assessment index corresponding to the target monitoring life raft/> , where,/> They are the external state evaluation proportional weight factors corresponding to the set shell state and compression belt state,/> The correction factors are evaluated for the set external state of the inflatable liferaft and the unreleased state corresponding to the placement state.

Embodiments of the present invention effectively reduce the stability and smoothness of the subsequent release of the target monitoring life raft by monitoring and evaluating the corresponding unreleased state of the target monitoring life raft, thereby improving the rescue effect and rescue efficiency of the subsequent target monitoring life raft. It provides a strong guarantee, and at the same time effectively highlights the safety problems that exist when the target monitoring life raft is placed, provides a reliable improvement direction for subsequent target monitoring life raft designers, and also ensures the stability of the target monitoring life raft rescue process. .

Step 6. Comprehensive status analysis of the life raft: Conduct a comprehensive status analysis of the target monitoring life raft, and confirm the rescue safety level corresponding to the target monitoring life raft, which specifically includes: combining the unreleased state safety assessment index and release corresponding to the target monitoring life raft State security assessment index substitution , get the comprehensive status safety assessment index corresponding to the target monitoring life raft/> ,/> is the set comprehensive status assessment correction factor,/> Allowable float factor for the set liferaft status,/> They are respectively expressed as the proportional weight factors corresponding to the set unreleased state and released state.

Compare the comprehensive status safety assessment index corresponding to the target monitoring life raft with the set status safety assessment index range corresponding to each rescue safety level to obtain the comprehensive status safety assessment index corresponding to the target monitoring life raft.

Step 7. Life raft comprehensive status feedback: Feedback the rescue safety level corresponding to the target monitoring life raft to the corresponding safety management personnel of the target monitoring life raft.

The embodiment of the present invention obtains the basic relevant information corresponding to the target monitoring life raft, and monitors and analyzes the pre-release state and post-release state corresponding to the target monitoring life raft, thereby confirming the rescue safety level corresponding to the target monitoring life raft. And feedback to the corresponding safety management personnel, effectively solving certain limitations of the current technology, meeting the rescue needs of target monitoring life rafts in the two major rescue scenarios of the seabed and the sea, and breaking the current single-dimensional monitoring method. One-sided, it achieves comprehensive monitoring of the target monitoring life raft from the state before release to the state after release, and at the same time intuitively displays the use risks and unexpected conditions of the target monitoring life raft, thereby ensuring the stability of the target monitoring life raft's subsequent rescue activities. From another level, it also minimizes the potential safety hazards during the subsequent use of the target monitoring life raft, thereby effectively reducing the subsequent rescue failure rate and rescue damage rate of the target monitoring life raft, and has high practicability.

The above contents are only examples and explanations of the concept of the invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or substitute them in similar ways, as long as they do not deviate from the concept of the invention. or beyond the scope defined by the claims, shall belong to the protection scope of the present invention.

Claims (7)

1. A monitoring and analyzing method for the state of an inflatable life raft system is characterized in that: the method comprises the following steps:

step 1, acquiring basic related information of the life raft: acquiring basic related information corresponding to a current inflatable life raft system to be monitored, and recording the current inflatable life raft system to be monitored as a target monitoring life raft;

step 2, monitoring the release state of the life raft: monitoring the release state of the target monitoring life raft to obtain the information of the buoyancy state of the target monitoring life raft in the release state;

step 3, analyzing the release state of the life raft: evaluating the release state corresponding to the target monitoring life raft to obtain a release state safety evaluation index corresponding to the target monitoring life raft, and recording as；

The specific evaluation process for evaluating the release state corresponding to the target monitoring life raft comprises the following steps:

A1, extracting the internal air pressure corresponding to the water body of each depth layer of the target monitoring life raft from the buoyancy state information of the target monitoring life raft in the release state, thereby calculating the internal air density corresponding to the water body of each depth layer of the target monitoring life raft, and recording asD represents the depth layer number, ">；

A2, extracting the outline volume corresponding to the water body of each depth layer of the target monitoring life raft from the buoyancy state information of the target monitoring life raft in the release state, thereby calculating the deformation degree corresponding to the water body of each depth layer of the target monitoring life raft, and recording as；

A3, performing route deviation weight setting on the target monitoring life raft in each depth layer water body based on the internal air density and the deformation degree corresponding to the target monitoring life raft in each depth layer water body;

a4, extracting the corresponding real-time position of the target monitoring life raft in the water body of each depth layer from the buoyancy state information of the target monitoring life raft in the release state, analyzing to obtain the corresponding floating route deviation of the target monitoring life raft in the water body of each depth layer, and marking as；

A5, obtaining a route state evaluation index corresponding to the target monitoring life raft through analysis formula analysis based on the upward floating route deviation of the target monitoring life raft corresponding to the water body of each depth layer and the route deviation weight of the target monitoring life raft corresponding to the water body of each depth layer, and recording as ；

A6, extracting the time length of the target monitoring life raft reaching the water bodies of the depth layers from the buoyancy state information of the target monitoring life raft in the release state, calculating the corresponding floating speed of the target monitoring life raft in the water bodies of the depth layers, calculating the buoyancy state evaluation index of the target monitoring life raft, and recording as；

A7, estimating index based on route state corresponding to target monitoring life raftAnd a buoyancy state assessment index->By calculation formula->Analyzing and obtaining safety evaluation index of corresponding release state of target monitoring life raft/>，The estimated duty weight of the release state corresponding to the set route state and the floating state respectively, +.>The floating correction factors correspond to the set inflatable life rafts;

step 4, monitoring the unreleased release state of the life raft: monitoring the unreleased state of the target monitoring life raft to obtain external state information and placement state information of the target monitoring life raft in the unreleased state;

step 5, analyzing the unreleased state of the release of the life raft: evaluating the unreleased state corresponding to the target monitoring life raft to obtain an unreleased state safety evaluation index corresponding to the target monitoring life raft, and recording the unreleased state safety evaluation index as ；

The specific evaluation process for evaluating the unreleased state corresponding to the target monitoring life raft comprises the following steps:

the first step, the bearing impact times and the damage area are respectively recorded asAnd->Analyzing to obtain a shell state safety evaluation index corresponding to the target monitoring life raft, and recording the shell state safety evaluation index as；

Second step of monitoring the external condition of the liferaft from the target when in the unreleased conditionThe number of broken wire compressing belts and the number of broken wires corresponding to the broken wire compressing belts are positioned in the information, and the safety evaluation index of the state of the compressing belts corresponding to the target monitoring life raft is obtained through analysis of an analysis formula and recorded as；

Thirdly, locating tension at two ends corresponding to each compression belt and pressure values corresponding to each pressure monitoring point from the placing state information of the target monitoring life raft in the unreleased state, analyzing to obtain a placing state safety evaluation index corresponding to the target monitoring life raft, and marking the placing state safety evaluation index as；

Fourth, the shell state safety evaluation index corresponding to the target monitoring life raft is obtainedSafety assessment index of state of compaction beltAnd a placement state security assessment index->Importing a calculation formulaObtaining the unreleased state safety evaluation index corresponding to the target monitoring life raft >Wherein->The duty weight factor is evaluated for the set shell state and the external state corresponding to the compaction state respectively,/->Evaluating correction factors for unreleased states corresponding to the set outer structural states and the set states of the inflatable liferafts respectively, wherein e represents a natural constant;

step 6, analyzing the comprehensive state of the life raft: carrying out comprehensive state analysis on the target monitoring life raft, and confirming the rescue safety level corresponding to the target monitoring life raft;

the comprehensive state analysis is carried out on the target monitoring life raft, the rescue safety level corresponding to the target monitoring life raft is confirmed, and the specific implementation process is as follows:

substituting the unreleased state safety evaluation index and the released state safety evaluation index corresponding to the target monitoring life raft intoObtaining the comprehensive state safety evaluation index corresponding to the target monitoring life raft>，/>Evaluating correction factors for the set integrated state, +.>Permit a floating factor for a set state of the liferaft, < >>The duty ratio weight factors corresponding to the set unreleased state and the released state are respectively expressed;

comparing the comprehensive state safety evaluation index corresponding to the target monitoring life raft with the state safety evaluation index range corresponding to each set rescue safety level to obtain the comprehensive state safety evaluation index corresponding to the target monitoring life raft;

Step 7, comprehensive state feedback of the life raft: and feeding back the rescue safety level corresponding to the target monitoring life raft to the safety manager corresponding to the target monitoring life raft.

2. A method of monitoring and analysing the condition of an inflatable liferaft system according to claim 1, wherein: the release state of the target monitoring life raft is monitored, and the specific monitoring process is as follows:

performing floating experiments of water bodies in different depth layers according to set unit depth intervals, and monitoring the internal air pressure corresponding to the target monitoring life raft in the water bodies in each depth layer to obtain the internal air pressure corresponding to the target monitoring life raft in the water bodies in each depth layer;

monitoring the corresponding external contour of the target monitoring life raft in each depth layer water body to obtain the corresponding contour volume of the target monitoring life raft in each depth layer water body;

counting the time length of the target monitoring life raft reaching the water bodies of all the depth layers to obtain the time length of the target monitoring life raft reaching the water bodies of all the depth layers;

performing an upward floating experiment on the target monitoring life raft according to a set upward floating route, and monitoring the corresponding real-time position of the target monitoring life raft in the upward floating experiment of the water body of each depth layer by using pressure sensing sensors arranged in the target monitoring life raft to obtain the corresponding real-time position of the target monitoring life raft in the water body of each depth layer;

And taking the internal air pressure, the contour volume, the real-time position and the time length reaching the water bodies of the depth layers corresponding to the water bodies of the depth layers as the buoyancy state information of the target monitoring life raft in the release state.

3. A method of monitoring and analysing the condition of an inflatable liferaft system according to claim 1, wherein: the method comprises the following steps of performing route deviation weight setting on the target monitoring life raft in each depth layer water body, wherein the specific setting process is as follows:

locating standard air density from basic related information corresponding to target monitoring life raft, and marking asThe target monitoring life raft is arranged at the inner air density corresponding to the water body of each depth layer>And deformation->Importing a calculation formulaObtaining the route deviation weight corresponding to the water body of the target monitoring life raft at the d-th depth layer>，/>Respectively expressed as the set duty ratio weight factors corresponding to the internal air density and the deformation degree, ++>Respectively, the allowable deformation degree difference of the set inflatable life raft corresponding to the water body of the d-th depth layer is +.>The deformation degree of the inflatable life raft corresponding to the water body at the d-th depth layer is allowed.

4. A method of monitoring and analysing the condition of an inflatable liferaft system according to claim 1, wherein: the specific calculation formula of the route state evaluation index corresponding to the target monitoring life raft is as follows Wherein->For the deviation of the reference route corresponding to the water body of the set inflatable life raft at the d-th depth layer, +.>And evaluating the compensation factors for the set route states.

5. A method of monitoring and analysing the condition of an inflatable liferaft system according to claim 1, wherein: the method comprises the steps of monitoring the unreleased state of the target monitoring life raft, and specifically, monitoring the external state and the placement state corresponding to the target monitoring life raft to obtain the external state information and the placement state information of the target monitoring life raft in the unreleased state;

the external state information of the target monitoring life raft in the unreleased state specifically comprises the number of broken wire compression bands, the number of broken wires corresponding to each broken wire compression band, the bearing impact times and the damage area;

the placing state information of the target monitoring life raft in the unreleased state specifically comprises tension forces at two ends corresponding to each compression belt and pressure values corresponding to each pressure monitoring point.

6. An inflatable liferaft system status monitoring and analysis method according to claim 5, wherein: the specific analysis formula of the shell state safety evaluation index corresponding to the target monitoring life raft is as follows Wherein->The weight factors of the corresponding duty ratio of the bearing impact times and the damage areas are respectively +.>The number of times of the reference load bearing impact and the reference damage area are respectively set.

7. A method of monitoring and analysing the condition of an inflatable liferaft system according to claim 6, wherein: the analysis obtains a placement state safety evaluation index corresponding to the target monitoring life raft, and the specific analysis process is as follows:

the corresponding tension forces at the two ends of each compacting belt in the target monitoring life raft are respectively recorded asAnd->R represents a compression band number, < >>；

The pressure value corresponding to each pressure monitoring point corresponding to the target monitoring life raft is recorded asP represents the number of the pressure monitoring point,the maximum pressure value and the minimum pressure value are screened out from the pressure values corresponding to the pressure monitoring points of the target monitoring life raft, meanwhile, the average pressure value corresponding to the target life raft is obtained through average value calculation, and the maximum pressure value, the minimum pressure value and the average pressure value are respectively marked as>And->；

Extracting initial setting pressure and initial setting tension of the compression belt from basic related information corresponding to the target monitoring life raft, respectively recorded asAnd->By analysis of the formulaAnalyzing to obtain the corresponding placement state safety evaluation index of the target monitoring life raft >，/>For the corresponding allowable tension difference of the two ends of the set compression belt,respectively expressed as the corresponding duty ratio weight factor of the tension deviation difference at the two ends of the set compression belt, +.>The weight factor expressed as the corresponding deviation difference between the two ends of the compression band, ">Respectively expressed as the corresponding duty weight factors of the pressure deviation differential pressure and the pressure uniformity of the set inflatable life raft, +.>The pressure deviations are placed for the corresponding permissions of the set liferaft.