A Method and Data Acquisition System for Safety Assessment of Port and Shipping Facilities Based on Analytic Hierarchy Process

Abstract

The present invention discloses a port and navigation facility safety status evaluation method and collection system based on hierarchical analysis method, which belongs to the technical field of safety status evaluation; extracts safety evaluation indicators of different levels and types of port and navigation facilities; constructs a comprehensive safety evaluation indicator system based on the safety evaluation indicators using the hierarchical analysis method; establishes a comparison matrix based on the comprehensive safety evaluation indicator system; constructs a judgment matrix based on the comparison matrix; and analyzes the consistency of the judgment matrix. The present invention quantitatively analyzes the indicator weights by establishing a comparison matrix and a judgment matrix to ensure the objectivity and consistency of the judgment results, and further verifies the reliability of the evaluation by calculating the consistency index CI and the consistency ratio CR; not only realizes the scientific evaluation of the safety status of port and navigation facilities, but also provides a quantitative analysis basis for emergency management, and ultimately improves the safe operation efficiency and emergency support capabilities of port and navigation facilities.

Description

Technical Field

[0001] The present invention relates to the technical field of safety status evaluation, in particular to a port and navigation facility safety status evaluation method and a collection system based on a hierarchical analysis method. Background Art

[0002] In recent years, with the acceleration of globalization and the continuous growth of shipping demand, the scale and complexity of port and shipping facilities have increased significantly, driving the development of relevant safety assessment technologies; from early single indicator analysis to today's comprehensive evaluation methods, technical means are becoming increasingly rich; in particular, the hierarchical analysis method is widely used in the fields of engineering management and safety assessment because it can handle complex system problems in a hierarchical manner and quantify the importance of different factors; however, the traditional hierarchical analysis method still has some shortcomings in practical applications, such as the strong subjectivity of the indicator system construction, and the lack of unified standards in the quantitative analysis of dynamic safety indicators such as emergency response time and reserve level, which to a certain extent limits its comprehensiveness and accuracy in the safety evaluation of port and shipping facilities.

[0003] The existing safety evaluation methods for port and shipping facilities are insufficient in terms of comprehensiveness, systematicness and dynamic adaptability. Specifically, the safety evaluation indicators are usually relatively single and fail to fully reflect the multi-dimensional safety characteristics of port and shipping facilities, such as the relationship between reserve level, emergency time and reserve cost. The evaluation method for the dynamic response capability of emergency material reserve warehouses is not perfect, ignoring the multi-level and multi-dimensional factors involved in actual operations. The setting of indicator weights in traditional evaluation methods is relatively subjective, and there is a lack of effective mathematical models to ensure the objectivity and scientificity of weight distribution. Summary of the invention

[0004] The purpose of the present invention is to provide a port and navigation facility safety status evaluation method and collection system based on hierarchical analysis method to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The invention discloses a safety status evaluation method for port and navigation facilities based on the hierarchical analysis method. The method comprises the following steps: extracting safety evaluation indicators of different levels and types of port and navigation facilities; constructing a comprehensive safety evaluation indicator system based on the safety evaluation indicators by using the hierarchical analysis method; establishing a comparison matrix based on the comprehensive safety evaluation indicator system; constructing a judgment matrix based on the comparison matrix; evaluating the consistency of the judgment matrix and outputting the evaluation results.

[0007] As a preferred solution of the safety status evaluation method of port and navigation facilities based on the hierarchical analysis method described in the present invention, the safety evaluation indicators include primary indicators, secondary indicators and tertiary indicators, wherein the primary indicators include: reserve level, emergency time and reserve cost.

[0008] The reserve level is measured based on the types and quantities of support materials that the emergency material reserve warehouse reserves in advance to deal with accidents.

[0009] The emergency time refers to the scheduling and circulation time of the emergency material reserve warehouse within the warehouse. The scheduling and circulation time within the warehouse includes the time when the emergency material reserve warehouse receives the emergency material guarantee order, the preparation completion time of storage, facilities and personnel, the circulation processing time of inventory materials, the loading and unloading time, and the final time for materials to be shipped out of the warehouse and loaded onto trucks.

[0010] The reserve cost refers to the cost incurred by the emergency material reserve warehouse in the process of completing normal reserve work, which includes the operating cost of machinery and equipment, the management cost of warehouse staff and the loss cost of expired and unused materials; the operating cost of machinery and equipment includes water, electricity and gas charges.

[0011] As a preferred scheme of the port and navigation facility safety status evaluation method based on the hierarchical analysis method described in the present invention, the secondary indicators include: material quantity, material type, emergency response time, emergency warehouse scheduling time, material warehouse scheduling cost, warehouse operation and maintenance cost and information management cost.

[0012] The material quantity indicates the quantity of materials stored in the emergency material reserve warehouse.

[0013] The material types indicate the material types stored in the emergency material reserve warehouse.

[0014] The emergency response time refers to the shortest time from the storage unit receiving the emergency material support order to the completion of storage facilities, equipment and personnel preparation.

[0015] The dispatch time within the emergency warehouse refers to the time required to complete simple processing operations, transportation, loading and unloading of emergency materials and transport them out of the warehouse.

[0016] The dispatching cost within the material warehouse represents the cost of simple processing, handling, loading and unloading, and transportation of emergency materials from the warehouse.

[0017] The warehouse operation and maintenance costs refer to the labor costs, facility and equipment operating costs, and operation and management costs incurred in maintaining the normal operation of the emergency material reserve warehouse.

[0018] The information management cost refers to the cost incurred by the emergency material reserve warehouse using the information system to manage the entry and exit, storage location, inventory and inquiry of emergency materials.

[0019] As a preferred solution of the method for evaluating the safety status of port and navigation facilities based on the hierarchical analysis method described in the present invention, the comprehensive safety evaluation index system includes a three-layer inspection and evaluation system: a target layer, a criterion layer and an indicator layer, and the indicator layer is the lower layer of the criterion layer, and the criterion layer is the lower layer of the target layer.

[0020] The target layer is composed of target indicators, and the target indicators are overall indicators for port and shipping infrastructure safety evaluation.

[0021] The criterion layer is composed of inspection item indicators, and the inspection item indicators include safe operation, facility status and safety assurance.

[0022] The indicator layer is composed of inspection indicators that are refined and decomposed from the inspection item indicators of the upper layer.

[0023] As a preferred solution of the safety status evaluation method of port and navigation facilities based on the hierarchical analysis method of the present invention, a lower layer is selected as the second layer in the three-layer inspection and evaluation system, and the upper layer of the selected lower layer is marked as the first layer, and all the components contained in the first layer and the second layer are counted respectively, and the first layer object set L1={A i |i∈[1,n]}, and the second layer object set L2={B j |j∈[1,m]}, where A i represents the i-th component contained in the first layer, B j represents the jth component included in the second layer, n represents the total number of components included in the first layer, and m represents the total number of components included in the second layer.

[0024] Select one component item from each of the first layer object set and the second layer object set to combine them in pairs and form a combination pair, and get a total of n×m combination pairs. The combination pairs are uniformly numbered, and any x-th combination pair is recorded as element a x , and x∈[1,n×m].

[0025] Compare any two elements and construct a comparison matrix, recorded as:

[0026]

[0027] Among them, A represents the comparison matrix, a xx Indicates element a x The element value is obtained by comparing with itself, and the element value is preset by a 1 to 9 scaling method.

[0028] As a preferred solution of the port and navigation facility safety status evaluation method based on the hierarchical analysis method of the present invention, a judgment matrix B is constructed based on the comparison matrix A. The calculation formula of the element value in the judgment matrix B is as follows:

[0029]

[0030] Among them, b xx Represents the element value of the x-th row and x-th column in the judgment matrix B.

[0031] The judgment matrix B is added row by row to obtain the sum vector, and the calculation formula is as follows:

[0032]

[0033] Among them, W x Represents the sum vector obtained by adding the x-th row in the judgment matrix B.

[0034] Normalize the sum vector obtained by adding the xth row in the judgment matrix B to obtain the weight vector. The calculation formula is as follows:

[0035]

[0036] Among them, Q x Represents the weight vector of the sum vector obtained by adding the x-th row in the judgment matrix B.

[0037] Construct the weight vector matrix as follows:

[0038]

[0039] in, represents the weight vector matrix, Q1,Q2,...,Q n×m They respectively represent the weight vectors of the sum vector obtained by adding the 1st, 2nd, ..., n×mth rows in the judgment matrix B.

[0040] Calculate the largest eigenvalue λ max , the calculation formula is as follows:

[0041]

[0042] The consistency index of the judgment matrix B is calculated as follows:

[0043]

[0044] Among them, CI represents the consistency index of the judgment matrix B.

[0045] Based on the consistency index CI, the consistency ratio is calculated using the following formula:

[0046]

[0047] Among them, CR represents the consistency ratio, and RI represents the random consistency index (representing the consistency average value of random matrices of the same order, and its value can usually be obtained by looking up a table).

[0048] A ratio threshold τ is preset. If CR<τ, the consistency of the judgment matrix B is determined to be acceptable. If CR≥τ, the judgment matrix is ​​modified until the consistency of the judgment matrix B is determined to be acceptable.

[0049] The port and navigation facility safety status evaluation and collection system based on the hierarchical analysis method includes: a data collection module, a data storage module, a data analysis module and a visualization module.

[0050] The data collection module is used to collect the operating status of port and shipping facilities, emergency material storage information and environmental monitoring data.

[0051] The data storage module is used to store the collected multi-source data.

[0052] The data analysis module is used to execute the hierarchical analysis method to generate a comprehensive safety score.

[0053] The visualization module is used to generate a graphical display of the evaluation results.

[0054] Furthermore, the data acquisition module includes a sensor network, which is used to collect facility operation status, material temperature and humidity, and emergency response time in real time.

[0055] Furthermore, the data analysis module adopts an analysis platform based on cloud computing and big data technology to support the storage, processing and analysis of massive data.

[0056] Furthermore, the visualization module includes a 3D visualization interface and a remote monitoring module. The 3D visualization interface is used to intuitively display the safety status of port and shipping facilities and the distribution and status of emergency materials. The remote monitoring module is used to monitor the safety status of port and shipping facilities in real time and provide intelligent early warning functions.

[0057] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: in the port and navigation facility safety status evaluation method and collection system based on the hierarchical analysis method provided by the present invention, by extracting safety evaluation indicators of different levels and types, a data foundation is laid for the subsequent construction of a comprehensive evaluation system, ensuring the comprehensiveness and pertinence of the evaluation indicators; based on these indicators, the hierarchical analysis method is used to construct a comprehensive safety evaluation indicator system; indicators are decomposed from three levels, namely, the target layer, the criterion layer and the indicator layer, to form a scientific and reasonable evaluation framework, so that the safety evaluation has hierarchy and clarity; subsequently, by establishing a comparison matrix and a judgment matrix, the indicator weights are quantitatively analyzed to ensure the objectivity and consistency of the judgment results, and at the same time, the reliability of the evaluation is further verified by calculating the consistency index CI and the consistency ratio CR; not only a scientific evaluation of the safety status of port and navigation facilities is achieved, but also a quantitative analysis basis is provided for emergency management, ultimately improving the safe operation efficiency and emergency support capabilities of port and navigation facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0059] Figure 1 It is a schematic diagram of safety evaluation indicators of the safety status evaluation method of port and navigation facilities based on the hierarchical analysis method of the present invention;

[0060] Figure 2 It is a structural schematic diagram of the port and navigation facility safety status evaluation and collection system based on the hierarchical analysis method of the present invention. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] See also Figure 1 In the first embodiment, a method for evaluating the safety status of port and navigation facilities based on the hierarchical analysis method is provided, and the method comprises the following steps:

[0063] Step S1: Extract safety evaluation indicators of different levels and types of port and navigation facilities.

[0064] Specifically, the safety evaluation indicators include primary indicators, secondary indicators and tertiary indicators, wherein the primary indicators include: reserve level, emergency time and reserve cost.

[0065] Furthermore, the reserve level is measured based on the types and quantities of support materials that the emergency material reserve warehouse reserves in advance to deal with accidents.

[0066] It should be noted that, considering the suddenness of the incident, as well as factors such as the material production cycle and changes in road conditions, appropriate safety measures must be established to prevent serious consequences of material shortages afterwards. The goal of emergency material reserves is to meet the material needs during the emergency response process, and the reserve level is the most important indicator in measuring the degree of material demand guarantee.

[0067] The emergency time refers to the dispatching and circulation time of the emergency material reserve warehouse in the warehouse. The dispatching and circulation time in the warehouse includes the time for the emergency material reserve warehouse to prepare storage, facilities and personnel, the circulation and processing time of the inventory materials, the loading and unloading time, and the final time for the materials to be shipped out of the warehouse and loaded onto the truck after receiving the emergency material guarantee order;

[0068] It should be noted that whether the reserve warehouse can quickly enter the emergency state after the emergency rescue response is initiated, and whether the dispatch and circulation time of the reserve materials in the warehouse can meet the rescue time requirements, these two points are very critical in the supply of materials. Obviously, the emergency time is an indicator that must be considered in the evaluation of emergency material reserves.

[0069] The reserve cost refers to the cost incurred by the emergency material reserve warehouse in the process of completing normal reserve work, which includes the operating cost of machinery and equipment, the management cost of warehouse staff and the loss cost of expired and unused materials; the operating cost of machinery and equipment includes water, electricity and gas charges.

[0070] It should be noted that since accidents are probabilistic events, the actual utilization rate of the emergency material storage warehouse is low, which will result in huge material loss costs. In order to prevent resource waste and achieve relative savings, the storage cost of emergency materials is also one of the key indicators that cannot be ignored.

[0071] Furthermore, the secondary indicators include: material quantity, material type, emergency response time, emergency warehouse scheduling time, material warehouse scheduling cost, warehouse operation and maintenance cost and information management cost.

[0072] The material quantity indicates the quantity of materials stored in the emergency material reserve warehouse.

[0073] The material types indicate the material types stored in the emergency material reserve warehouse.

[0074] The emergency response time refers to the shortest time from the storage unit receiving the emergency material support order to the completion of storage facilities, equipment and personnel preparation.

[0075] The dispatch time within the emergency warehouse refers to the time required to complete simple processing operations, transportation, loading and unloading of emergency materials and transport them out of the warehouse.

[0076] The dispatching cost within the material warehouse represents the cost of simple processing, handling, loading and unloading, and transportation of emergency materials from the warehouse.

[0077] The warehouse operation and maintenance costs refer to the labor costs, facility and equipment operating costs, and operation and management costs incurred in maintaining the normal operation of the emergency material reserve warehouse.

[0078] The information management cost refers to the cost incurred by the emergency material reserve warehouse using the information system to manage the entry and exit, storage location, inventory and inquiry of emergency materials.

[0079] Furthermore, the third-level indicators are decomposed and extracted based on the secondary indicators to construct a comprehensive evaluation index system for emergency material reserves.

[0080] Step S2: Based on the safety evaluation indicators, a comprehensive safety evaluation indicator system is constructed using the analytic hierarchy process.

[0081] Specifically, the comprehensive safety evaluation index system includes a three-layer inspection and evaluation system: a target layer, a criterion layer and an index layer, and the index layer is a lower layer of the criterion layer, and the criterion layer is a lower layer of the target layer.

[0082] The target layer is composed of target indicators, and the target indicators are overall indicators for port and shipping infrastructure safety evaluation.

[0083] The criterion layer is composed of inspection item indicators, and the inspection item indicators include safe operation, facility status and safety assurance.

[0084] The indicator layer is composed of inspection indicators that are refined and decomposed from the inspection item indicators of the upper layer.

[0085] Step S3: Establish a comparison matrix based on the comprehensive safety evaluation index system.

[0086] Specifically, in the three-layer inspection and evaluation system, a lower layer is selected as the second layer, and the upper layer of the selected lower layer is marked as the first layer. All the components contained in the first layer and the second layer are counted respectively, and the first layer object set L1={A i |i∈[1,n]}, and the second layer object set L2={B j |j∈[1,m]}, where A i represents the i-th component contained in the first layer, B j represents the jth component included in the second layer, n represents the total number of components included in the first layer, and m represents the total number of components included in the second layer.

[0087] Select one component item from each of the first layer object set and the second layer object set to combine them in pairs and form a combination pair, and get a total of n×m combination pairs. The combination pairs are uniformly numbered, and any x-th combination pair is recorded as element a x , and x∈[1,n×m].

[0088] Furthermore, any two elements are compared and a comparison matrix is ​​constructed, which is recorded as:

[0089]

[0090] Among them, A represents the comparison matrix, a xx Indicates element a x The element value is obtained by comparing with itself, and the element value is preset by a 1 to 9 scaling method.

[0091] Step S4: construct a judgment matrix based on the comparison matrix; evaluate the consistency of the judgment matrix and output the evaluation result.

[0092] Specifically, based on the comparison matrix A, a judgment matrix B is constructed, and the calculation formula of the element values ​​in the judgment matrix B is as follows:

[0093]

[0094] Among them, b xx Represents the element value of the x-th row and x-th column in the judgment matrix B.

[0095] Furthermore, the judgment matrix B is added row by row to obtain the sum vector, and the calculation formula is as follows:

[0096]

[0097] Among them, W x Represents the sum vector obtained by adding the x-th row in the judgment matrix B.

[0098] Normalize the sum vector obtained by adding the xth row in the judgment matrix B to obtain the weight vector. The calculation formula is as follows:

[0099]

[0100] Among them, Q x Represents the weight vector of the sum vector obtained by adding the x-th row in the judgment matrix B.

[0101] Furthermore, the weight vector matrix is ​​constructed as follows:

[0102]

[0103] in, represents the weight vector matrix, Q1,Q2,...,Q n×m They respectively represent the weight vectors of the sum vector obtained by adding the 1st, 2nd, ..., n×mth rows in the judgment matrix B.

[0104] Calculate the largest eigenvalue λ max , the calculation formula is as follows:

[0105]

[0106] The consistency index of the judgment matrix B is calculated as follows:

[0107]

[0108] Among them, CI represents the consistency index of the judgment matrix B.

[0109] Furthermore, based on the consistency index CI, the consistency ratio is calculated, and the calculation formula is as follows:

[0110]

[0111] Among them, CR represents the consistency ratio and RI represents the random consistency index.

[0112] A ratio threshold τ is preset, where τ=0.1. If CR<τ, the consistency of the judgment matrix B is determined to be acceptable. If CR≥τ, the judgment matrix is ​​modified until the consistency of the judgment matrix B is determined to be acceptable.

[0113] It should be noted that, in view of the safety management requirements and technical characteristics of port and shipping infrastructure, the hierarchical analysis method is used to establish a safety evaluation index system, which is divided into three levels: target layer, criterion layer, and indicator layer; among them, the target layer is the overall or single indicator of port and shipping infrastructure safety evaluation, which is compared with the inspection items or types in the safety inspection table; the criterion layer is the inspection item indicators such as safe operation, facility status, and safety assurance, which are compared with the inspection contents in the inspection table; the indicator layer is the inspection indicator of the detailed decomposition of the upper-level inspection item indicators, which is compared with the compliance requirements of the inspection contents in the inspection table. The correlation between indicators is converted into quantitative analysis, and the importance is quantified by determining the relative importance of the inspection indicators of the same layer, and the judgment matrix is ​​constructed with numerical values, so as to determine the weight of each indicator and guide the determination of the inspection item score, thereby improving the scientificity and comprehensiveness of the evaluation and guiding the safety inspection and evaluation work.

[0114] According to the logic between indicators, a hierarchical relationship of quantitative safety indicators is established. The established indicator system includes the target layer, the criterion layer, and the indicator layer. The target layer is the overall or single indicator of port and shipping safety evaluation, the criterion layer is the inspection item indicators such as safe operation, facility status, and safety assurance, and the indicator layer is the inspection indicator of the next layer of the inspection item indicator. By determining the relative importance between two factors, constructing a judgment matrix, and converting the correlation between indicators into quantitative analysis, the weight of each indicator is determined and the inspection item score is determined to ensure the authenticity and comprehensiveness of the evaluation and guide safety inspection and evaluation work.

[0115] Based on the analysis of the existing safety evaluation index system, combined with the actual situation of ports and shipping, new inspection indicators are added or modified according to the field divisions, including inspection content, basis, preset results, rectification suggestions, etc. The laws and regulations corresponding to the inspection indicators quote the latest applicable clauses to ensure that the established indicator system has a valid legal and regulatory basis.

[0116] Select the required inspection indicators, develop inspection templates, use the analytic hierarchy process to build models, determine the hierarchical relationship between indicators, evaluate the importance of the evaluation object among all inspection indicators, verify the reliability of the safety checklist, and determine the corresponding inspection item scores based on the indicator weights.

[0117] Establish corresponding inspection tasks and assign different inspection contents to inspectors as needed to facilitate on-site inspection implementation; production safety inspections are carried out item by item according to inspection indicators, making on-site inspections easy to implement.

[0118] Based on the information in the on-site inspection records, edit the inspection photos, describe the inspection issues and rectification suggestions in a targeted manner, and export the on-site inspection report.

[0119] The inspection results are statistically analyzed based on the theories and methods of safety engineering. The objects of analysis are selected according to the needs, and different analysis indicators and forms of expression are selected according to the requirements to obtain common and prominent problems, analyze the causes of the problems, and form an analysis report on safety inspection problems.

[0120] See also Figure 2 In the second embodiment, a port and navigation facility safety status evaluation and collection system based on the hierarchical analysis method is provided, and the system includes: a data collection module, a data storage module, a data analysis module and a visualization module.

[0121] The data collection module is used to collect the operating status of port and shipping facilities, emergency material storage information and environmental monitoring data.

[0122] The data storage module is used to store the collected multi-source data.

[0123] The data analysis module is used to execute the hierarchical analysis method to generate a comprehensive safety score.

[0124] The visualization module is used to generate a graphical display of the evaluation results.

[0125] Furthermore, the data acquisition module includes a sensor network, which is used to collect facility operation status, material temperature and humidity, and emergency response time in real time.

[0126] Furthermore, the data analysis module adopts an analysis platform based on cloud computing and big data technology to support the storage, processing and analysis of massive data.

[0127] Furthermore, the visualization module includes a 3D visualization interface and a remote monitoring module. The 3D visualization interface is used to intuitively display the safety status of port and shipping facilities and the distribution and status of emergency materials. The remote monitoring module is used to monitor the safety status of port and shipping facilities in real time and provide intelligent early warning functions.

[0128] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0129] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for evaluating the safety status of port and navigation facilities based on the analytic hierarchy process, characterized in that: The method comprises the following steps: Step S1: extracting safety evaluation indicators of different levels and types of port and navigation facilities; Step S2: Based on the safety evaluation index, a comprehensive safety evaluation index system is constructed using the analytic hierarchy process; Step S3: establishing a comparison matrix based on the comprehensive safety evaluation index system; Step S4: constructing a judgment matrix based on the comparison matrix; evaluating the consistency of the judgment matrix and outputting the evaluation result.

2. The safety status evaluation method of port and navigation facilities based on hierarchical analysis method according to claim 1 is characterized in that: The safety evaluation indicators include primary indicators, secondary indicators and tertiary indicators, wherein the primary indicators include: reserve level, emergency time and reserve cost; The reserve level is measured based on the types and quantities of emergency supplies that are reserved in the emergency supply warehouse to deal with accidents. The emergency time refers to the dispatching and circulation time of the emergency material reserve warehouse in the warehouse. The dispatching and circulation time in the warehouse includes the time for the emergency material reserve warehouse to prepare storage, facilities and personnel, the circulation and processing time of the inventory materials, the loading and unloading time, and the final time for the materials to be shipped out of the warehouse and loaded onto the truck after receiving the emergency material guarantee order; The reserve cost refers to the cost incurred by the emergency material reserve warehouse in the process of completing normal reserve work, which includes the operating cost of machinery and equipment, the management cost of warehouse staff and the loss cost of expired and unused materials; the operating cost of machinery and equipment includes water, electricity and gas charges.

3. The safety status evaluation method of port and navigation facilities based on hierarchical analysis method according to claim 2 is characterized in that: The secondary indicators include: quantity of materials, types of materials, emergency response time, dispatch time within the emergency warehouse, dispatch cost within the material warehouse, warehouse operation and maintenance cost, and information management cost; The quantity of materials mentioned above refers to the quantity of materials stored in the emergency material reserve warehouse; The material types refer to the types of materials stored in the emergency material reserve warehouse; The emergency response time refers to the shortest time from when the storage unit receives the emergency material support order to when the storage facilities, equipment and personnel are ready; The dispatch time in the emergency warehouse refers to the time required to complete simple processing, handling, loading and unloading of emergency materials and transport them out of the warehouse; The dispatching cost within the material warehouse refers to the cost of simple processing, handling, loading and unloading, and transportation of emergency materials from the warehouse; The warehouse operation and maintenance costs refer to the labor costs, facility and equipment operating costs, and operation and management costs incurred in maintaining the normal operation of the emergency material storage warehouse; The information management cost refers to the cost incurred by the emergency material reserve warehouse using the information system to manage the entry and exit, storage location, inventory and inquiry of emergency materials.

4. The method for evaluating the safety status of port and navigation facilities based on the analytic hierarchy process according to claim 3 is characterized in that: The comprehensive safety evaluation index system includes a three-layer inspection and evaluation system: a target layer, a criterion layer, and an index layer, wherein the index layer is a lower layer of the criterion layer, and the criterion layer is a lower layer of the target layer; The target layer is composed of target indicators, which are overall indicators for port and shipping infrastructure safety evaluation; The criteria layer is composed of inspection item indicators, which include safe operation, facility status and safety assurance; The indicator layer is composed of inspection indicators that are refined and decomposed from the inspection item indicators of the upper layer.

5. The safety status evaluation method of port and navigation facilities based on hierarchical analysis method according to claim 4 is characterized in that: The specific implementation process of step S3 includes: In the three-layer inspection and evaluation system, a lower layer is selected as the second layer, and the upper layer of the selected lower layer is marked as the first layer. All the components contained in the first layer and the second layer are counted respectively, and the first layer object set L1={A i |i∈[1,n]}, and the second layer object set L2={B j |j∈[1,m]}, where A i represents the i-th component contained in the first layer, B j represents the jth component contained in the second layer, n represents the total number of components contained in the first layer, and m represents the total number of components contained in the second layer; Select one component item from each of the first layer object set and the second layer object set to combine them in pairs and form a combination pair, and get a total of n×m combination pairs. The combination pairs are uniformly numbered, and any x-th combination pair is recorded as element a x , and x∈[1,n×m]; Compare any two elements and construct a comparison matrix, recorded as: Among them, A represents the comparison matrix, a xx Indicates element a x The element value is obtained by comparing with itself, and the element value is preset by a 1 to 9 scaling method.

6. The safety status evaluation method of port and navigation facilities based on hierarchical analysis method according to claim 5 is characterized in that: The specific implementation process of step S4 includes: Based on the comparison matrix A, a judgment matrix B is constructed. The calculation formula of the element values ​​in the judgment matrix B is as follows: Among them, b xx Represents the element value of the xth row and xth column in the judgment matrix B; The judgment matrix B is added row by row to obtain the sum vector, and the calculation formula is as follows: Among them, W x represents the sum vector obtained by adding the xth row in the judgment matrix B; Normalize the sum vector obtained by adding the xth row in the judgment matrix B to obtain the weight vector. The calculation formula is as follows: Among them, Q x represents the weight vector of the sum vector obtained by adding the xth row in the judgment matrix B; Construct the weight vector matrix as follows: in, represents the weight vector matrix, Q1,Q2,...,Q n×m They respectively represent the weight vectors of the sum vectors obtained by adding the 1st, 2nd, ..., n×mth rows in the judgment matrix B; Calculate the largest eigenvalue λ max , the calculation formula is as follows: The consistency index of the judgment matrix B is calculated as follows: Among them, CI represents the consistency index of the judgment matrix B; Based on the consistency index CI, the consistency ratio is calculated using the following formula: Among them, CR represents the consistency ratio, and RI represents the random consistency index; A ratio threshold τ is preset. If CR<τ, the consistency of the judgment matrix B is determined to be acceptable. If CR≥τ, the judgment matrix is ​​modified until the consistency of the judgment matrix B is determined to be acceptable.

7. A port and navigation facility safety status evaluation and collection system based on the hierarchical analysis method, which executes the port and navigation facility safety status evaluation method based on the hierarchical analysis method as described in any one of claims 1 to 6, characterized in that: The acquisition system includes: a data acquisition module, a data storage module, a data analysis module and a visualization module; The data collection module is used to collect the operating status of port and shipping facilities, emergency material storage information and environmental monitoring data; The data storage module is used to store the collected multi-source data; The data analysis module is used to perform the analytic hierarchy process and generate a comprehensive safety score; The visualization module is used to generate a graphical display of the evaluation results.

8. The port and navigation facility safety status evaluation and collection system based on the analytic hierarchy process according to claim 7 is characterized by: The data acquisition module includes a sensor network, which is used to collect facility operation status, material temperature and humidity, and emergency response time in real time.

9. The port and navigation facility safety status evaluation and collection system based on the analytic hierarchy process according to claim 8 is characterized by: The data analysis module adopts an analysis platform based on cloud computing and big data technology.

10. The port and navigation facility safety status evaluation and collection system based on the analytic hierarchy process according to claim 9 is characterized by: The visualization module includes a 3D visualization interface and a remote monitoring module. The 3D visualization interface is used to intuitively display the safety status of port and shipping facilities and the distribution and status of emergency supplies. The remote monitoring module is used to monitor the safety status of port and shipping facilities in real time.

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