Equipment maintenance importance degree evaluation method and equipment and storage medium

Abstract

The invention belongs to the field of rail transit, and particularly relates to an equipment maintenance importance degree evaluation method, equipment and a storage medium. Based on the analysis object, obtaining a fault mode of the analysis object and a fault result corresponding to the fault mode; obtaining a fault influence criticality factor matrix and a maintainability influence factor matrix based on the factor importance score table, the fault criticality influence factor set and the maintainability influence factor set; based on the fault influence criticality grade evaluation set and the maintainability influence factor grade evaluation set, obtaining a fault influence membership matrix and a maintainability influence membership matrix; and calculating the fault mode maintenance importance of the analysis object based on the fault factor weight, the maintenance factor weight, the fault influence membership matrix and the maintainability influence membership matrix. The method has the advantages that the maintenance factors need to be considered when the maintenance importance degree of each component is evaluated, so that the maintenance analysis is guided, and the maintenance effectiveness and economy are improved.

Description

Technical Field

[0001] The present invention belongs to the field of rail transit, and in particular relates to a method, a device and a storage medium for evaluating the importance of equipment maintenance. Background Art

[0002] Rail transit refers to a type of transportation tool or transportation system in which operating vehicles need to travel on specific tracks. Rail transit has greatly facilitated people's daily travel. The traction system is an important component of rail transit vehicles, which directly affects the operation and safety of the vehicle. The traction system has been in relatively harsh working conditions for a long time, and has been subjected to various extreme stress shocks from the vehicle system and the environment. Its failure rate is relatively high, which brings great risks to the normal, safe and reliable operation of the vehicle.

[0003] Among the related technologies, the maintenance of rail transit mainly adopts the reliability-centered maintenance (RCM) theory, and failure mode effects and hazard analysis (FMECA) is one of the key technologies.

[0004] Regarding the above-mentioned related technologies, the relative importance of each coefficient is not taken into account in the failure mode effects and hazard analysis (FMECA). The combination of different equipment evaluations often leads to the same RPN value. In the formulation of maintenance strategies, it is impossible to distinguish the maintenance importance of each component of the system, resulting in incomplete maintenance strategy formulation and evaluation. Summary of the invention

[0005] The technical problem to be solved by the present invention is that maintenance factors need to be considered when evaluating the maintenance importance of each component, so as to guide maintenance analysis and improve maintenance effectiveness and economy. The present application provides an equipment maintenance importance evaluation method, device and storage medium.

[0006] A method for evaluating the importance of equipment maintenance, comprising:

[0007] Obtain the analysis object and factor importance score table of rail equipment;

[0008] Based on the analysis object, obtaining a working function of the analysis object;

[0009] Obtaining a failure mode of the analysis object and a failure consequence corresponding to the failure mode based on the work function analysis;

[0010] Establishing a set of factors affecting the failure criticality and a set of factors affecting the maintainability of the analysis object based on the failure consequences;

[0011] Based on the factor importance score table, the fault criticality influencing factor set and the maintainability influencing factor set, a fault criticality influencing factor matrix and a maintainability influencing factor matrix are obtained;

[0012] Obtaining a fault factor weight and a maintenance factor weight according to the fault impact criticality factor matrix and the maintainability impact factor matrix;

[0013] Constructing the fault impact criticality factor level evaluation set and the maintainability impact factor level evaluation set;

[0014] Based on the fault impact hazard level evaluation set and the maintainability impact factor level evaluation set, a fault impact membership matrix and a maintainability impact membership matrix are obtained;

[0015] The maintenance importance of the failure mode of the analysis object is calculated based on the failure factor weight, the maintenance factor weight, the failure impact membership matrix and the maintainability impact membership matrix.

[0016] Optionally, the failure mode and failure consequence of the analysis object obtained based on the work function analysis includes:

[0017] Based on the working function, obtaining a failure mode of the analysis object;

[0018] Based on the failure mode, the failure consequences are obtained, and the failure consequences include the failure criticality impact and the maintainability impact. The failure criticality impact includes the failure safety impact, the failure mission impact and the failure economic impact. The maintainability impact includes the difficulty of obtaining spare parts, the difficulty of fault monitoring and the fault repair time.

[0019] Optionally, obtaining the fault criticality factor matrix and the maintainability influencing factor matrix based on the factor importance score table, the fault criticality influencing factor set, and the maintainability influencing factor set includes:

[0020] Based on the factor importance score table, respectively obtaining the failure safety impact attribute, the failure task impact attribute and the failure economic impact attribute;

[0021] Based on the factor importance score table, the spare parts difficulty attribute, fault monitoring difficulty attribute and fault repair time attribute are obtained respectively;

[0022] Based on the fault safety impact attribute, the fault task impact attribute and the fault economic impact attribute, the fault impact criticality factor matrix is ​​obtained;

[0023] The maintainability influencing factor matrix is ​​obtained based on the spare parts acquisition difficulty attribute, the fault monitoring difficulty attribute, and the fault repair time attribute.

[0024] Optionally, the calculating the maintenance importance of the failure mode of the analysis object according to the failure impact criticality factor matrix and the maintainability impact factor matrix includes:

[0025] Based on the fault impact criticality factor matrix and the maintainability impact factor matrix, obtaining a maximum eigenvalue;

[0026] Performing consistency checks on the fault impact criticality factor matrix and the maintainability impact factor matrix respectively to determine whether the fault impact criticality factor matrix and the maintainability impact factor matrix are qualified;

[0027] If the fault impact criticality factor matrix and the maintainability impact factor matrix are both qualified, the maintenance importance of the fault mode of the analysis object is calculated.

[0028] Optionally, the calculating the failure mode maintenance importance of the analysis object includes:

[0029] Constructing the fault impact hazard level evaluation set and the maintainability influencing factor level evaluation set;

[0030] Determining a fault evaluation level and a maintenance evaluation level of the fault mode based on the fault impact criticality level evaluation set and the maintainability influencing factor level evaluation set;

[0031] Based on the fault impact criticality level evaluation set and the fault evaluation level, a fault impact membership matrix is ​​obtained;

[0032] Based on the maintainability influencing factor level evaluation set and the maintenance evaluation level, a maintainability influencing membership matrix is ​​obtained;

[0033] The failure mode maintenance importance of the analysis object is calculated based on the failure impact membership matrix and the maintainability impact membership matrix.

[0034] Optionally, calculating the maintenance importance of the fault mode of the analysis object based on the fault impact membership matrix and the maintainability impact membership matrix includes:

[0035] Calculating a fault impact criticality evaluation vector based on the fault impact membership matrix and the fault factor weights;

[0036] Calculating a maintainability impact evaluation vector based on the maintainability impact membership matrix and the maintenance factor weights;

[0037] Obtaining a comprehensive fault importance level based on the fault impact criticality evaluation vector and the fault impact criticality level evaluation set;

[0038] Based on the maintainability impact evaluation vector and the maintainability impact factor level evaluation set, a comprehensive maintenance importance level is obtained;

[0039] The failure mode maintenance importance of the analysis object is calculated based on the comprehensive failure importance level and the comprehensive maintenance importance level.

[0040] Optionally, the calculating the maintenance importance of the fault mode of the analysis object based on the comprehensive fault importance level and the comprehensive maintenance importance level includes:

[0041] Obtaining a fault frequency level evaluation table of the fault mode of the analysis object;

[0042] Based on the fault frequency level evaluation table, obtaining the fault frequency level;

[0043] Obtaining the fault mode maintenance importance based on the fault frequency level, the comprehensive fault importance level and the comprehensive maintenance importance level;

[0044] Based on the failure mode maintenance importance, the failure mode maintenance importance of the analysis object is obtained.

[0045] Optionally, obtaining the failure mode maintenance importance of the analysis object based on the failure mode maintenance importance includes:

[0046] Get the number of failure modes;

[0047] Obtaining the maintenance importance of the failure mode corresponding to each failure mode;

[0048] The failure mode maintenance importance of the analysis object is obtained based on the number of failure modes and the failure mode maintenance importance corresponding to each failure mode.

[0049] Based on the same inventive concept, the present application also provides a terminal device.

[0050] A terminal device comprises a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor loads and executes the computer program, the method described in any one of claims 1 to 8 is adopted.

[0051] Based on the same inventive concept, the present application also provides a computer-readable storage medium.

[0052] A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is loaded and executed by a processor, the method according to any one of claims 1 to 8 is adopted.

[0053] The beneficial effects of the present invention are:

[0054] Comprehensively consider the degree of damage caused by the failure, the impact on maintainability, and the impact on the probability of failure. Establish a set of influencing factors, establish a set of factor weights, and calculate the weight vector of the factor set. Establish an evaluation set for each factor in the factor set, and calculate the fuzzy evaluation matrix of each factor. Combine the weight vector of the factor set and the fuzzy evaluation matrix to calculate the maintenance importance. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a flow chart of one implementation method of a method for evaluating the importance of equipment maintenance in an embodiment of the present application.

[0056] Figure 2 This is a representation of the importance of the factors in the embodiment of the present application;

[0057] Figure 3 2 is a schematic diagram of a fault impact hazard level evaluation set according to an embodiment of the present application;

[0058] Figure 4 Schematic diagram of the maintenance influencing factor level evaluation set according to an embodiment of the present application;

[0059] Figure 5 This is a schematic diagram of a random consistency indicator of an embodiment of the present application;

[0060] Figure 6 This is a schematic diagram of the fault frequency level evaluation in the embodiment of the present application;

[0061] Figure 7 It is an improved FMECA sample 1 of the embodiment of the present application;

[0062] Figure 8 It is an improved FMECA sample 2 of the embodiment of the present application;

[0063] Fig. 9 This is an improved FMECA sample 3 according to an embodiment of the present application. DETAILED DESCRIPTION

[0064] This application provides a method for evaluating the importance of equipment maintenance, such as Figure 1 As shown, including:

[0065] S100, obtaining the analysis object and factor importance score table of the track equipment.

[0066] Specifically, the analysis object of the rail equipment is a rail transit equipment including many devices, each of which may have different functions to jointly maintain the operation of the rail equipment, and the analysis object is any one of the rail equipment.

[0067] The factor importance rating table is a table that lists the importance of each failure consequence relative to other failure consequences. Figure 2 shown.

[0068] S110. Based on the analysis object, obtain the working function of the analysis object.

[0069] Specifically, a rail equipment may have one or more functions, which can be roughly divided into primary function, secondary function, protection function and redundant function.

[0070] S120. Obtain the failure mode of the analysis object and the failure consequence corresponding to the failure mode based on the work function analysis.

[0071] Specifically, the failure mode is the manifestation of the failure of the analysis object, that is, the corresponding working function failure of the analysis object, such as major function failure and minor function failure. The failure consequence is the possible consequences under the failure mode, including safety consequences, mission consequences, and economic consequences.

[0072] S130. Establish a set of factors affecting the failure criticality and a set of factors affecting maintainability of the analysis object based on the failure consequences.

[0073] Specifically, the set of factors affecting the fault hazard degree is the collection of possible fault hazards under the current fault mode, including safety impact, mission impact and economic impact; the set of factors affecting maintainability is the difficulty of repairing the equipment, including the difficulty of obtaining spare parts, the difficulty of fault detection and the repair time.

[0074] S140, based on the factor importance score table, the fault criticality influencing factor set and the maintainability influencing factor set, a fault criticality influencing factor matrix and a maintainability influencing factor matrix are obtained.

[0075] Specifically, the failure impact criticality factor matrix is ​​composed of the ratio of one element in the failure impact factor set, namely, safety impact, mission impact, and economic impact, to another element. The maintainability impact factor matrix is ​​the ratio of one element in the maintainability impact factor set, namely, the difficulty of spare parts acquisition, the difficulty of fault detection, and the maintenance time, to another element.

[0076] S150. Obtaining a fault factor weight and a maintenance factor weight according to a fault impact criticality factor matrix and a maintainability impact factor matrix.

[0077] Specifically, the fault factor weights for each type of fault are different. The fault factor weights are calculated based on the fault impact criticality factor matrix. Similarly, the maintenance factor weights are calculated based on the maintainability impact factor matrix. The fault factor weights and maintenance factor weights are combined with the membership matrix to calculate the maintenance importance of the fault mode.

[0078] S160, construct a fault impact hazard level evaluation set and a maintainability influencing factor level evaluation set.

[0079] Specifically, the fault impact hazard level evaluation set includes the fault safety consequences at different levels, the fault mission consequences at different levels, and the fault economic consequences at different levels. The fault impact hazard level evaluation set is as follows: Figure 4 The maintainability influencing factor level evaluation set includes the difficulty of obtaining spare parts, the difficulty of fault detection and the fault repair time at different levels. The maintainability influencing factor level evaluation set is as follows: Figure 4 shown.

[0080] S170. Based on the fault impact hazard level evaluation set and the maintainability impact factor level evaluation set, a fault impact membership matrix and a maintainability impact membership matrix are obtained.

[0081] Specifically, the fault impact membership matrix assigns a quantitative value to each factor according to the specific circumstances of different fault modes, such as the safety consequences of failures, the mission consequences of failures, and the economic consequences of failures. Similarly, the maintainability impact membership matrix represents the specific values ​​of the difficulty of obtaining spare parts, the difficulty of fault detection, and the time taken to repair faults.

[0082] S180, calculating the maintenance importance of the failure mode of the analysis object based on the failure factor weight, the maintenance factor weight, the failure influence membership matrix, and the maintainability influence membership matrix.

[0083] Specifically, the failure mode repair importance indicates the priority of repair for the analysis object, and the greater the failure mode repair importance, the higher the repair priority.

[0084] According to the weight of fault factors and maintenance factors, the fault influence membership matrix and the maintainability influence membership matrix, combined with the MRPN formula, the maintenance importance of the fault mode is calculated.

[0085] In one implementation of this embodiment, step S120, i.e. obtaining the failure mode of the analysis object and the failure consequence corresponding to the failure mode based on the work function analysis, includes:

[0086] S200: Obtain a failure mode of the analysis object based on the working function.

[0087] Specifically, each track device may have multiple working functions, and each working function corresponds to multiple failure modes, such as primary function failure, secondary function failure, and redundant function failure.

[0088] S210. Based on the failure mode, the failure consequences are obtained. The failure consequences include the failure criticality impact and the maintainability impact. The failure criticality impact includes the failure safety impact, the failure mission impact and the failure economic impact. The maintainability impact includes the difficulty of obtaining spare parts, the difficulty of fault detection and the fault repair time.

[0089] Specifically, the fault safety impact is the safety impact that may be brought to people when the fault occurs, the fault mission impact is the impact that may be brought to the operation of the entire rail equipment when the analysis object fails, the fault economic impact is the difficulty of repairing the faulty equipment, and the maintainability impact is the impact brought by repairing the analysis object. The difficulty of obtaining spare parts is the difficulty of obtaining parts when replacing damaged equipment parts, the fault detection difficulty is whether it is easy to detect whether it is a fault when it occurs, and the fault repair time is the time required to repair the fault.

[0090] In one implementation of this embodiment, step S150, based on the factor importance score table, the fault criticality influencing factor set and the maintainability influencing factor set, obtains the fault criticality factor matrix and the maintainability influencing factor matrix, including:

[0091] S310. Based on the factor importance score table, respectively obtain the failure safety impact attribute, the failure task impact attribute, and the failure economic impact attribute.

[0092] S320: Based on the factor importance score table, respectively obtain a spare parts difficulty attribute, a fault monitoring difficulty attribute, and a fault repair time attribute.

[0093] Specifically, the importance level in the fault factor importance scoring table is the corresponding fault safety impact attribute, fault task impact attribute and fault economic impact attribute, for example, the fault safety impact attribute level is 1, the fault task impact attribute level is 3, and the fault task impact attribute level is 5. Similarly, the spare parts acquisition difficulty attribute, the fault monitoring difficulty attribute and the fault repair time attribute are also obtained through the factor importance scoring table, for example, the spare parts difficulty attribute level is 3, the fault monitoring difficulty attribute level is 1, and the fault repair time attribute level is 5. The specific numbers of the importance level vary according to the different analysis objects. The specific data of the importance level can be determined based on the database collected during the long-term maintenance process. In order to make the data more accurate, the data from multiple groups of databases can be taken as the average value.

[0094] S330. Obtain a failure impact criticality factor matrix based on the failure safety impact attribute, the failure task impact attribute, and the failure economic impact attribute.

[0095] Specifically, the fault impact criticality factor matrix is ​​expressed as:

[0096] The elements in the fault impact factor matrix are obtained by comparing the determined fault safety impact attributes, fault task impact attributes, and fault economic impact attributes, that is, the relative importance of one factor relative to another factor, such as a 12 =F1 / F2, F1, F2 and F3 represent the failure safety impact attribute, failure mission impact attribute and failure economic impact attribute respectively.

[0097] S340, obtaining a maintainability influencing factor matrix based on the spare parts acquisition difficulty attribute, the fault monitoring difficulty attribute, and the fault repair time attribute.

[0098] Specifically, the maintainability influencing factor matrix is ​​expressed as The elements in the maintainability influencing factor matrix are obtained by comparing the attributes of spare parts acquisition difficulty, fault monitoring and detection difficulty, and fault repair time. M1, M2, and M3 represent the attributes of acquisition difficulty, fault monitoring and detection difficulty, and fault repair time, respectively. 12 =M1 / M 12 .

[0099] In one implementation of this embodiment, step S160, that is, calculating the maintenance importance of the failure mode of the analysis object according to the failure impact criticality factor matrix and the maintainability impact factor matrix, includes:

[0100] S400: Obtain a maximum eigenvalue based on a fault impact criticality factor matrix and a maintainability impact factor matrix.

[0101] Specifically, the maximum eigenvalue λ max It is calculated based on the fault impact factor matrix and the maintainability impact factor matrix, and the weight vector W is obtained by the square root method. i ,Right now:

[0102]

[0103] Then max for:

[0104]

[0105] where a ij is the element in the matrix, the weight vector is the fault factor weight and the maintenance factor weight, the fault factor weight is calculated through the fault impact criticality factor matrix, and the maintenance factor weight is calculated through the maintainability impact factor matrix.

[0106] S410, respectively perform consistency checks on the fault impact criticality factor matrix and the maintainability impact factor matrix to determine whether the fault impact criticality factor matrix and the maintainability impact factor matrix are qualified.

[0107] Specifically, the purpose of consistency test is to compare the consistency of the results obtained by different methods, to check the coordination between the importance of each element, to avoid the contradiction that A is more important than B, B is more important than C, and C is more important than A. When the consistency test fails, it is because there is an error in the factor importance score table, and it is necessary to re-judge the failure impact factor matrix J 1 And maintainability influencing factor matrix J 2 Perform consistency check and calculate matrix J 1 , J 2 The consistency test CR of the judgment matrix is: When CR is less than 0.1, the matrix consistency is considered qualified; when CR is not less than 0.1, the matrix consistency is considered unqualified and the judgment matrix needs to be reconstructed. The formula for the judgment matrix consistency test CR is:

[0108]

[0109] In the formula, λ max To evaluate the maximum eigenvalue of the judgment matrix, n is the dimension of the judgment matrix, and RI is to find the corresponding random consistency index according to n lookup table, n lookup table as follows Figure 5 shown.

[0110] S420: If the fault impact criticality factor matrix and the maintainability impact factor matrix are both qualified, calculate the maintenance importance of the fault mode of the analysis object.

[0111] Specifically, when CR is less than 0.1, the matrix consistency is considered qualified. If CR is greater than or equal to 0.1, the matrix consistency is considered unqualified, and it is necessary to reconstruct the judgment matrix, that is, the fault influence criticality factor matrix and the maintainability influence factor matrix.

[0112] In one implementation of this embodiment, step S160 obtains the fault impact membership matrix and the maintainability impact membership matrix based on the fault impact criticality level evaluation set and the maintainability impact factor level evaluation set, including:

[0113] S500: Determine a fault evaluation level and a maintenance evaluation level of a fault mode based on a fault impact criticality level evaluation set and a maintainability influencing factor level evaluation set.

[0114] S510: Obtain a fault impact membership matrix based on the fault impact criticality level evaluation set and the fault evaluation level.

[0115] Specifically, the fault impact membership matrix is ​​expressed as:

[0116] The elements in the matrix are the specific evaluation levels of each element in the fault impact criticality level evaluation set.

[0117] The fault impact hazard level evaluation includes various impact consequences that may cause harm, namely safety consequences, mission consequences and economic consequences. The fault evaluation level is the specific level of these impact consequences.

[0118] S520: Based on the maintainability influencing factor level evaluation set and the maintenance evaluation level, a maintainability influencing membership matrix is ​​obtained.

[0119] Specifically, the maintainability influence membership matrix is ​​expressed as:

[0120] The elements in the matrix are the specific evaluation levels of each element in the maintainability influencing factor level evaluation set.

[0121] S530: Calculate the maintenance importance of the failure mode of the analysis object based on the failure impact membership matrix and the maintainability impact membership matrix.

[0122] Specifically, based on the fault impact membership matrix and the maintainability impact membership matrix, the maintenance importance of the fault mode is calculated in combination with the MRPN formula.

[0123] In one implementation of this embodiment, step S540, based on the fault impact membership matrix and the maintainability impact membership matrix, calculates the maintenance importance of the fault mode of the analysis object, including:

[0124] S600: Obtain fault factor weights based on the fault impact hazard level evaluation set.

[0125] Specifically, the fault factor weight is obtained from the fault impact criticality factor level evaluation set after the evaluation level is determined.

[0126] S610: Obtain maintenance factor weights based on the maintainability influencing factor level evaluation set.

[0127] Specifically, the maintenance factor weight is obtained from the maintainability influencing factor level evaluation set after the evaluation level is determined.

[0128] S620: Calculate the fault impact criticality evaluation vector based on the fault impact membership matrix and the fault factor weights.

[0129] S630: Calculate the maintainability impact evaluation vector based on the maintainability impact membership matrix and the maintainability factor weights.

[0130] Specifically, for a certain fault mode, based on the fault impact membership matrix and the fault factor weights, the fault impact criticality evaluation vector can be calculated, and based on the maintainability impact membership matrix and the maintainability factor weights, the maintainability impact evaluation vector can be calculated.

[0131] For a certain fault mode, based on the fault impact membership matrix FR i And the fault factor weight W1, the fault impact hazard evaluation vector can be calculated Maintainability influence membership matrix MR i And the maintenance factor weight W2, calculate the maintainability impact evaluation vector

[0132]

[0133]

[0134] S640: Obtain a comprehensive fault importance level based on the fault impact criticality evaluation vector and the fault impact criticality level evaluation set.

[0135] Specifically, the comprehensive fault importance level is calculated by combining the fault impact criticality factor level evaluation set and the fault impact criticality evaluation vector, and its calculation formula is:

[0136]

[0137] S650: Based on the maintainability impact evaluation vector and the maintainability impact factor level evaluation set, a comprehensive maintenance importance level is obtained.

[0138] Specifically, the maintenance comprehensive importance level ME i It is a combination of maintainability impact level evaluation set V2 and maintainability impact evaluation vector The calculation formula is:

[0139]

[0140] S660: Calculate the maintenance importance of the failure mode of the analysis object based on the comprehensive importance level of the failure and the comprehensive importance level of the maintenance.

[0141] Specifically, the failure mode maintenance importance is calculated based on the maintenance comprehensive importance level, the failure comprehensive importance level and the MRPN formula.

[0142] The maintainability importance level and fault importance level are used to quantify the indicators of various factors, and also play a role in standardizing the original data of various indicators.

[0143] In one implementation of this embodiment, step S660, based on the comprehensive importance level of the fault and the comprehensive importance level of the maintenance, calculates the maintenance importance level of the failure mode of the analysis object, including:

[0144] S700: Obtain a failure frequency level evaluation table of a failure mode of an analysis object.

[0145] Specifically, the fault frequency level evaluation table is determined according to the project requirements or the rail transit risk matrix requirements. The fault frequency level evaluation table represents the probability of failure. The fault frequency level evaluation table is as follows: Figure 6 shown.

[0146] S710. Obtain a fault frequency level based on a fault frequency level evaluation table.

[0147] Specifically, the fault frequency level is divided into several levels from the fault frequency level evaluation table, and each level represents a different probability of failure and a different time of equipment failure.

[0148] S720: Obtain the maintenance importance of the fault mode based on the fault frequency level, the comprehensive fault importance level and the comprehensive maintenance importance level.

[0149] Specifically, the comprehensive hazard level of the fault impact hazard, the comprehensive importance level of the maintainability impact, and the failure mode frequency level FR i , calculate the maintenance importance MRPN of the failure mode i ,Right now

[0150] MRPN i =FE i ×ME i ×FR i .

[0151] S730: Obtain the failure mode maintenance importance of the analysis object based on the failure mode maintenance importance.

[0152] Specifically, only the maintenance importance of one failure mode is calculated above. For a device, there may be multiple failure modes, and the maintenance importance of other failure modes needs to be calculated to obtain the maintenance importance of the failure mode of the analysis object.

[0153] In one implementation of this embodiment, step S660, based on the failure mode maintenance importance, obtains the failure mode maintenance importance of the analysis object, including:

[0154] S800. Obtain the number of failure modes.

[0155] Specifically, the number of failure modes is the number of possible failure modes of the analysis object.

[0156] S810: Obtain the failure mode maintenance importance corresponding to each failure mode.

[0157] S820: Obtain the failure mode maintenance importance of the analysis object based on the number of failure modes and the failure mode maintenance importance corresponding to each failure mode.

[0158] Specifically, the maintenance importance of multiple failure modes of the analysis object is accumulated to finally obtain the maintenance importance of the analysis object.

[0159] After obtaining the maintenance importance of the analysis object, the obtained results are brought into the traditional FMECA analysis report to form an improved FMECA for maintenance, such as Figures 6 to 8 shown.

[0160] An embodiment of the present application also discloses a terminal device, including a memory and a processor. The memory stores a computer program that can be run on the processor. When the processor loads and executes the computer program, a network traffic detection method is adopted.

[0161] The terminal device may be a computer device such as a desktop computer, a laptop computer or a cloud server, and the terminal device includes but is not limited to a processor and a memory. For example, the terminal device may also include input and output devices, a network access device and a bus.

[0162] Among them, the processor can adopt a central processing unit (CPU). Of course, according to actual usage, other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. can also be adopted. The general-purpose processor can adopt a microprocessor or any conventional processor, etc., and this application does not impose any restrictions on this.

[0163] Among them, the memory can be an internal storage unit of the terminal device, such as a hard disk or memory of the terminal device, or it can be an external storage device of the terminal device, such as a plug-in hard disk, a smart memory card (SMC), a secure digital card (SD) or a flash memory card (FC) equipped on the terminal device, etc., and the memory can also be a combination of an internal storage unit and an external storage device of the terminal device. The memory is used to store computer programs and other programs and data required by the terminal device. The memory can also be used to temporarily store data that has been output or is to be output, and this application does not impose any restrictions on this.

[0164] Among them, through this terminal device, a network traffic detection method in the above embodiment is stored in the memory of the terminal device, and is loaded and executed on the processor of the terminal device for easy use.

[0165] An embodiment of the present application further discloses a computer-readable storage medium, and the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, a network traffic detection method in the above embodiment is adopted.

[0166] Among them, the computer program can be stored in a computer-readable medium, the computer program includes computer program code, the computer program code can be in the form of source code, object code, executable file or certain middleware, etc. The computer-readable medium includes any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the computer-readable medium includes but is not limited to the above-mentioned components.

[0167] Among them, through this computer-readable storage medium, a network traffic detection method in the above embodiment is stored in a computer-readable storage medium, and is loaded and executed on a processor to facilitate the storage and application of the above method.

[0168] The above describes specific embodiments of the present invention. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0169] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as above, which are not provided in detail for the sake of simplicity.

[0170] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A method for evaluating the importance of equipment maintenance, characterized in that: include: Obtain the analysis object and factor importance score table of rail equipment; Based on the analysis object, obtaining a working function of the analysis object; Obtaining a failure mode of the analysis object and a failure consequence corresponding to the failure mode based on the work function analysis; Establishing a set of factors affecting the failure criticality and a set of factors affecting the maintainability of the analysis object based on the failure consequences; Based on the factor importance score table, the fault criticality influencing factor set and the maintainability influencing factor set, a fault criticality influencing factor matrix and a maintainability influencing factor matrix are obtained; Obtaining a fault factor weight and a maintenance factor weight according to the fault impact criticality factor matrix and the maintainability impact factor matrix; Constructing the fault impact hazard level evaluation set and the maintainability influencing factor level evaluation set; Based on the fault impact hazard level evaluation set and the maintainability impact factor level evaluation set, a fault impact membership matrix and a maintainability impact membership matrix are obtained; The maintenance importance of the failure mode of the analysis object is calculated based on the failure factor weight, the maintenance factor weight, the failure impact membership matrix and the maintainability impact membership matrix.

2. A method for evaluating the importance of equipment maintenance as claimed in claim 1, characterized in that: The failure mode and failure consequence of the analysis object obtained based on the work function analysis include: Based on the working function, obtaining a failure mode of the analysis object; Based on the failure mode, the failure consequences are obtained, and the failure consequences include the failure criticality impact and the maintainability impact. The failure criticality impact includes the failure safety impact, the failure mission impact and the failure economic impact. The maintainability impact includes the difficulty of obtaining spare parts, the difficulty of fault detection and the fault repair time.

3. A method for evaluating the importance of equipment maintenance as claimed in claim 2, characterized in that: The method of obtaining the fault criticality factor matrix and the maintainability influencing factor matrix based on the factor importance score table, the fault criticality influencing factor set and the maintainability influencing factor set includes: Based on the factor importance score table, respectively obtaining the failure safety impact attribute, the failure task impact attribute and the failure economic impact attribute; Based on the factor importance score table, the spare parts difficulty attribute, fault monitoring difficulty attribute and fault repair time attribute are obtained respectively; Based on the fault safety impact attribute, the fault task impact attribute and the fault economic impact attribute, the fault impact criticality factor matrix is ​​obtained; The maintainability influencing factor matrix is ​​obtained based on the spare parts acquisition difficulty attribute, the fault monitoring difficulty attribute, and the fault repair time attribute.

4. A method for evaluating the importance of equipment maintenance as claimed in claim 3, characterized in that: Calculating the maintenance importance of the failure mode of the analysis object according to the failure impact criticality factor matrix and the maintainability impact factor matrix includes: Based on the fault impact criticality factor matrix and the maintainability impact factor matrix, obtaining a maximum eigenvalue; Performing consistency checks on the fault impact criticality factor matrix and the maintainability impact factor matrix respectively to determine whether the fault impact criticality factor matrix and the maintainability impact factor matrix are qualified; If the fault impact criticality factor matrix and the maintainability impact factor matrix are both qualified, the maintenance importance of the fault mode of the analysis object is calculated.

5. The equipment maintenance importance evaluation method according to claim 1, characterized in that: The obtaining of the fault influence membership matrix and the maintainability influence membership matrix based on the fault influence hazard level evaluation set and the maintainability influence factor level evaluation set includes: Determining a fault evaluation level and a maintenance evaluation level of the fault mode based on the fault impact criticality level evaluation set and the maintainability influencing factor level evaluation set; Based on the fault impact criticality level evaluation set and the fault evaluation level, a fault impact membership matrix is ​​obtained; Based on the maintainability influencing factor grade evaluation set and the maintenance evaluation grade, a maintainability influencing membership matrix is ​​obtained.

6. A method for evaluating the importance of equipment maintenance as claimed in claim 5, characterized in that: The calculating of the maintenance importance of the failure mode of the analysis object based on the failure factor weight, the maintenance factor weight, the failure influence membership matrix and the maintainability influence membership matrix comprises: Calculating a fault impact criticality evaluation vector based on the fault impact membership matrix and the fault factor weights; Calculating a maintainability impact evaluation vector based on the maintainability impact membership matrix and the maintenance factor weights; Obtaining a comprehensive fault importance level based on the fault impact criticality evaluation vector and the fault impact criticality level evaluation set; Based on the maintainability impact evaluation vector and the maintainability impact factor level evaluation set, a comprehensive maintenance importance level is obtained; The failure mode maintenance importance of the analysis object is calculated based on the comprehensive failure importance level and the comprehensive maintenance importance level.

7. A method for evaluating the importance of equipment maintenance as claimed in claim 6, characterized in that: The calculating the maintenance importance of the failure mode of the analysis object based on the comprehensive fault importance level and the comprehensive maintenance importance level includes: Obtaining a fault frequency level evaluation table of the fault mode of the analysis object; Based on the fault frequency level evaluation table, obtaining the fault frequency level; Obtaining the fault mode maintenance importance based on the fault frequency level, the comprehensive fault importance level and the comprehensive maintenance importance level; Based on the failure mode maintenance importance, the failure mode maintenance importance of the analysis object is obtained.

8. A method for evaluating the importance of equipment maintenance as claimed in claim 7, characterized in that: The obtaining the failure mode maintenance importance of the analysis object based on the failure mode maintenance importance includes: Get the number of failure modes; Obtaining the maintenance importance of the failure mode corresponding to each failure mode; The failure mode maintenance importance of the analysis object is obtained based on the number of failure modes and the failure mode maintenance importance corresponding to each failure mode.

9. A terminal device, comprising a memory and a processor, characterized in that: The memory stores a computer program that can be run on the processor, and when the processor loads and executes the computer program, the method according to any one of claims 1 to 8 is adopted.

10. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded and executed by a processor, the method according to any one of claims 1 to 8 is adopted.

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