Safety analysis assistance system and safety analysis assistance method

Abstract

The present invention provides assistance for an appropriate analysis. This safety analysis assistance system: extracts, as extraction information, past result data corresponding to an item to be displayed, from safety-related database that stores past result data and items of an FMEA sheet in relation with each other; sets, among the extraction information, information which can be related to an object as related information; displays, in a first display, the items and the related information in relation with each other, and displays an object for which the FMEA sheet is created and the related information in relation with each other; and displays, in a second display different from the first display, an FMEA sheet which reflects a selection result of the related information in the first display.

Description

Safety analysis support system and safety analysis support method

[0001] The technology disclosed in this specification relates to a technology for supporting safety analysis.

[0002] Generally, to ensure product reliability, failure modes and their effects are analyzed during the design stage using an analytical technique called Failure Mode and Effects Analysis (FMEA). This analysis clarifies the causes and effects of failures, and countermeasures are considered as necessary.

[0003] When performing FMEA analysis, a method is known that allows a person with no experience or knowledge to efficiently analyze a large amount of case data and create an FMEA sheet. This method involves storing an item list in which multiple items in the FMEA sheet are defined along with their order, extracting words and phrases from multiple given case data, and generating a semantic network that has each extracted word and phrase as a node (see, for example, Patent Document 1).

[0004] Japanese Patent Application Laid-Open No. 2008-209988

[0005] In the method disclosed in the above-mentioned Patent Document 1, a person without experience or knowledge may focus only on the frequency of occurrence of the words registered in the database as the failure mode (cause of failure), which may lead to erroneous analysis results.

[0006] The technology disclosed in the present specification has been made in consideration of the problems described above, and is a technology for performing appropriate analysis.

[0007] A safety analysis support system that is a first aspect of the technology disclosed in the specification of the present application is a safety analysis support system that supports the creation of an FMEA sheet related to the safety analysis of an object, and includes a processing circuit that executes a program and a storage device that stores the program to be executed. By executing the program, the processing circuit extracts, as extracted information, performance data that is information about past FMEA sheets and case studies and at least one item of the FMEA sheet from a safety-related database in which the performance data is stored in association with the item to be displayed, and sets part of the extracted information that is associated with the object as related information. In a first display, the item and the related information are displayed in association with each other, and the object for which the FMEA sheet is to be created and the related information are displayed in association with each other. In a second display different from the first display, the FMEA sheet that reflects the selection result of the related information in the first display is displayed.

[0008] According to at least the first aspect of the technology disclosed in the present specification, when creating an FMEA sheet, performance data can be displayed in association with each perspective corresponding to the targets and items of the FMEA sheet, thereby providing the user with information to assist in creating the FMEA sheet.

[0009] Furthermore, objects, features, aspects, and advantages associated with the technology disclosed herein will become more apparent from the detailed description and accompanying drawings set forth below.

[0010] FIG. 1 is a diagram showing an example of the configuration of a safety analysis support system including a safety analysis support device according to an embodiment; FIG. 2 is a diagram showing an example of the operation of the safety analysis support system according to an embodiment; FIG. 3 is a diagram showing an example of display information; FIG. 4 is a diagram showing another example of display information; FIG. 5 is a diagram showing an example of a safety-related setting file; FIG. 6 is a diagram showing an example of the structure of a safety-related DB; FIG. 7 is a diagram showing an example of an FMEA sheet; FIG. 8 is a diagram showing another example of display information; FIG. 9 is a diagram showing an example of background information (detailed information) corresponding to each related information display; FIG. 10 is a diagram showing an example of the operation of the safety analysis support system according to an embodiment;

[0011] Hereinafter, embodiments will be described with reference to the accompanying drawings. In the following embodiments, detailed features are shown for the purpose of explaining the technology, but these are merely examples and are not necessarily essential features for enabling the embodiments to be implemented.

[0012] The drawings are schematic, and for the sake of convenience, components may be omitted or simplified as appropriate. The relative sizes and positions of components shown in different drawings are not necessarily accurately depicted and may be changed as appropriate. Hatching may also be used in drawings such as plan views that are not cross-sectional views to facilitate understanding of the embodiments.

[0013] In the following description, the same components are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed descriptions of them may be omitted to avoid duplication.

[0014] Furthermore, in the description given in this specification, when a certain component is described as "comprising," "including," or "having," unless otherwise specified, this is not an exclusive expression that excludes the presence of other components.

[0015] Furthermore, in the description of this specification, even if ordinal numbers such as "first" or "second" are used, these terms are used for convenience to make it easier to understand the contents of the embodiments, and the contents of the embodiments are not limited to the order that may result from these ordinal numbers.

[0016] First Embodiment A safety analysis support system and a safety analysis support method according to this embodiment will be described below.

[0017] <Configuration of Safety Analysis Support System> FIG. 1 is a diagram showing an example of the configuration of a safety analysis support system including a safety analysis support device 10 according to this embodiment.

[0018] 1 is realized by a computer. Specifically, the safety analysis support device includes, as hardware, a central processing unit 11, a volatile memory 12, a non-volatile memory 13, a communication interface 14, and an external interface 15. The safety analysis support device also includes a user output unit 16 and a user input unit 17 for operating the computer.

[0019] The safety analysis support device 10 is connected to a safety-related database (DB) 21 via a communication interface 14. The safety analysis support device 10 is also connected to a safety-related setting file 22 via an external interface 15.

[0020] The central processing unit 11 is a processing circuit such as an integrated circuit (IC) that performs central processing. Specific examples of the central processing unit 11 include a central processing unit (CPU) and a graphics processing unit (GPU).

[0021] The volatile memory 12 is a storage device that temporarily stores data. A specific example of the volatile memory 12 is a dynamic random access memory (DRAM). The nonvolatile memory 13 is a storage device that saves data. Specific examples of the nonvolatile memory 13 are a hard disk drive (HDD) and a solid state drive (SSD), and may also be a portable storage medium such as an optical disk.

[0022] The communication interface 14 is an interface for communicating with external devices and the safety-related DB 21. A specific example of the communication interface 14 is Ethernet (registered trademark). The external interface 15 is an interface for communicating with the safety-related setting file 22. A specific example of the external interface 15 is a Universal Serial Bus (USB) memory, a Secure Digital (SD) memory card, or a Floppy Disk (FD).

[0023] A specific example of the user output unit 16 is a display, and a specific example of the user input unit 17 is a keyboard, a mouse, or a touch panel.

[0024] Furthermore, the safety analysis support device 10 includes, as functions realized by the above configuration, an analysis support function 23 for displaying and assisting in input of interrelationships of failure effects, a relationship generation function 24 for generating safety-related interrelationships, an output control function 25, and an input control function 26. The functions of the analysis support function 23, the relationship generation function 24, the output control function 25, and the input control function 26 are realized as software functions by the central processing unit 11 executing a program, for example.

[0025] The non-volatile memory 13 stores a program for implementing the functions of the analysis support function 23 and the relationship generation function 24. This program is executed by the central processing unit 11 and the volatile memory 12.

[0026] <Operation of the Safety Analysis Support System> Next, the operation of the safety analysis support system according to this embodiment will be described. Fig. 2 is a diagram showing an example of the operation of the safety analysis support system according to this embodiment.

[0027] The safety-related setting file 22 is input to the relationship creation function 24 via the external interface 15. The information input from the safety-related setting file 22 to the relationship creation function 24 includes, for example, an object perspective, a defect cause perspective, a countermeasure perspective, an application perspective, a failure mode perspective, etc., as information on items that the user 1 wants to display (items that the user wants to refer to) when inputting information into the FMEA sheet. Here, the FMEA (Failure Mode and Effects Analysis) sheet is a sheet created as a result of performing a safety analysis of an object using an analysis method called FMEA, and is, for example, data in a table format in which corresponding contents are associated and stored for a plurality of items.

[0028] The safety-related DB 21 stores items to be displayed when entering information into an FMEA sheet (items included in the safety-related setting file 22) and performance data (data on many past FMEA sheets and data on malfunction cases) in association with each other.

[0029] The relationship generation function 24 extracts necessary information (i.e., information related to the items to be displayed) from the safety-related DB 21 based on the safety-related setting file 22 as extracted information, and further calculates the connection relationships between the extracted information (including the relevance to the targets of the FMEA sheet) and outputs them as link information.

[0030] The analysis support function 23 generates display information 33 (display of interrelationships of failure effects) for assisting input into the FMEA sheet based on sheet information 32, which is information related to the FMEA sheet, and the extraction information and link information (i.e., taking into consideration the relevance of the performance data items to be displayed and the targets of the FMEA sheet). Furthermore, the analysis support function 23 outputs the display information 33 using the output control function 25.

[0031] Fig. 3 is a diagram showing an example of display information 33. The display information 33 is information that displays the interrelationships of failure effects. Fig. 3 shows a viewpoint index 41, a target viewpoint display 42, and a related information display 43. In the display information 33 of Fig. 3, a plurality of viewpoint indexes 41 are arranged around the target viewpoint display 42, and further, the target viewpoint display 42 and each related information display 43 are linked and displayed.

[0032] As shown in an example in Fig. 3, in the display information 33, related information (related information display 43) extracted from the safety-related DB 21 having the structure shown in Fig. 6 (described later) and items (perspective index 41) of the FMEA sheet having the structure shown in Fig. 7 (described later) are linked in advance (grouped close together in Fig. 3) and displayed. Also, in the display information 33 in Fig. 3, the related information (related information display 43) and the target of the FMEA sheet (target viewpoint display 42) are linked and displayed.

[0033] Fig. 4 is a diagram showing another example of the display information 33. Fig. 4 shows a viewpoint index 41, a target viewpoint display 42, and a related information display 43. However, in Fig. 4, the viewpoint index 41 shows "target viewpoint," "countermeasure viewpoint," "defect cause viewpoint," and "failure mode viewpoint," but does not show "application viewpoint."

[0034] Fig. 5 is a diagram showing an example of the safety-related setting file 22. As shown in Fig. 5, the safety-related setting file 22 describes an "objective viewpoint" as an INDEX, and describes "FLASH_MEMORY, CPU" and the like as corresponding NAMEs. Also, "countermeasure viewpoint," "fault cause viewpoint," "application viewpoint," and "failure mode viewpoint" are described as INDEX, and "ON / OFF" is described as the corresponding display for each (ON is described for all in Fig. 5).

[0035] As shown in Fig. 5, when the displays corresponding to all of the "object perspective," "countermeasure perspective," "defect cause perspective," "application perspective," and "failure mode perspective" are set to "ON," the display information shown in Fig. 3 is displayed to the user 1. On the other hand, when the display corresponding to the "application perspective," for example, is set to "OFF," the display information 33 shown in Fig. 4 (i.e., the display information 33 without the "application perspective") is displayed to the user 1, instead of the display information shown in Fig. 3.

[0036] Although examples of file formats are shown in FIGS. 3 and 4, any input format that has a user interface and allows user setting may be used.

[0037] 6 is a diagram showing an example of the structure of the safety-related DB 21. The safety-related DB 21 will be described below with reference to FIG.

[0038] As shown in FIG. 6, information on a minimum unit component 101 includes information on a fault state 102 .

[0039] Specific examples of information on the smallest unit component 101 include a power supply, a non-volatile memory, a volatile memory, a sensor, a clock, communication, data processing, and control processing.

[0040] Specific examples of the information on the fault state 102 include low voltage, overvoltage, drift, oscillation, output spike, etc., which are linked to the power supply, and specific examples of the information on the fault state 102 include data degeneracy, address degeneracy, garbled data, etc., which are linked to the nonvolatile memory (those extracted when searching for the character string "nonvolatile memory").

[0041] The information of the fault condition 102 requires the information of the safety mechanism 103 .

[0042] As a specific example, if the information of the smallest unit component 101 is non-volatile memory and the information of the failure state 102 is data degradation, the information of the safety mechanism 103 (linked to the non-volatile memory and data degradation) may include parity bits, improved checksums, memory monitoring using error detection and correction codes, data replication, memory signatures, etc.

[0043] The information on the fault condition 102 results from the information on the quality control factors 104 .

[0044] As a specific example, if the information of the smallest unit component 101 is non-volatile memory and the information of the failure state 102 is address degeneration, information of the quality control factor 104 (linked to the non-volatile memory and address degeneration) may include soldering defects, inspection errors, etc.

[0045] The quality control factor 104 information requires preventive measures 105 information.

[0046] As specific examples, the information on the preventive measures 105 includes solder defects, solder amount management standards for inspection errors, visual inspection, and the like.

[0047] The smallest unit component 101 has information on general usage 106 .

[0048] As a specific example, if the information of the smallest unit component 101 is in non-volatile memory, the information of the general usage method 106 (linked to the non-volatile memory) may include configuration data for starting up the CPU and executing program processing, log data, sensor data for use in the CPU's calculation processing, etc.

[0049] The general usage method 106 has information on the general usage method fault state 107 .

[0050] As a specific example, if the information of the smallest unit component 101 is non-volatile memory and the general usage method 106 is configuration data for starting a CPU and executing program processing, information of the fault status 107 of the general usage method (linked to the non-volatile memory and configuration data) may include a write error, a read error, inability to start the CPU, etc.

[0051] The general usage fault condition 107 information requires safety measures 108 information.

[0052] As a specific example, when the information on the fault state 107 of the general usage method is that the CPU cannot be started, the information on the safety measures 108 (associated with the CPU being unable to be started) may include rollback.

[0053] By defining the concept (mutual relevance) of this information as the safety-related DB 21, it is possible to create an FMEA sheet using logical thinking, rather than focusing only on the frequency of appearance of the words (performance data) registered in the DB.

[0054] Fig. 7 is a diagram showing an example of an FMEA sheet. Each item of the FMEA sheet is shown in Fig. 7. Note that the FMEA sheet shown in Fig. 7 may be displayed on a display that is completely different from the display information 33 in Fig. 4, or may be displayed in a part of the display other than the part where the display information 33 in Fig. 4 is displayed.

[0055] 4 and 7 are displayed on a monitor connected to the safety analysis support device 10. Then, input from the user 1 is processed via the input control function 26.

[0056] The relationship between the items on the FMEA sheet and the display information 33 will be described below with reference to FIGS. 3, 5, 4, 7, and 6. FIG.

[0057] The "failure mode" among the items of the FMEA sheet shown in Fig. 7 is displayed as a failure mode perspective in the perspective index 41 of Fig. 3 or 4. The "failure mode" is linked to the failure state 102 in the safety-related DB 21 and the failure state 107 due to a general usage method.

[0058] The analysis support function 23 extracts performance data corresponding to the item "failure mode" on the FMEA sheet based on the failure state 102 or the failure state due to general usage 107. Then, the output control function 25 displays display information 33 (specifically, write error, read error, and garbled data, which are related information display 43) as shown in Fig. 3 or 4 .

[0059] 7 is displayed as a measure perspective in the perspective index 41 of Fig. 3 or 4. The "impact measure" is linked to the safety mechanism 103 and the safety measure 108 in the safety-related DB 21.

[0060] The analysis support function 23 extracts performance data corresponding to the item "impact countermeasures" on the FMEA sheet based on the safety mechanism 103 or the safety countermeasure 108. Then, the output control function 25 displays display information 33 (specifically, related information display 43, which includes ECC assignment, secure boot, and rollback) as shown in FIG. 3 or 4 .

[0061] 7 is displayed as a defect cause viewpoint in the viewpoint index 41 of FIG. 3 or 4. The "defect cause" is linked to the quality control factor 104 in the safety-related DB 21.

[0062] The analysis support function 23 extracts performance data corresponding to the item "cause of defect" on the FMEA sheet based on the quality control factors 104. Then, the output control function 25 displays display information 33 (specifically, the related information display 43, such as soldering defects and control terminal setting defects) as shown in FIG. 3 or 4.

[0063] 7 is displayed as a use perspective in the perspective index 41 of FIG. 3. The "cause countermeasure" is linked to the preventive measure 105 in the safety-related DB 21.

[0064] The analysis support function 23 extracts performance data corresponding to the item "cause countermeasure" on the FMEA sheet based on the preventive countermeasure 105. Then, the output control function 25 displays display information 33 (specifically, related information display 43 for CPU boot, log, and data) as shown in FIG.

[0065] 7 is displayed as a target viewpoint in the viewpoint index 41 of FIG. 3 or 4. The target is linked to the smallest unit component 101 in the safety-related DB 21 and the general usage method 106.

[0066] The analysis support function 23 extracts performance data corresponding to the item "target" on the FMEA sheet based on the smallest unit component 101 or the general usage method 106. Then, the output control function 25 displays display information 33 (specifically, the nonvolatile memory that is the target viewpoint display 42) as shown in Fig. 3 or 4.

[0067] 3 or 4, the user 1 reflects the contents of the FMEA sheet via the input control function 26 (i.e., inputs or updates the sheet information 32). A method for reflecting the contents of the display information 33 in the sheet information 32 will be described below.

[0068] For example, in the FMEA sheet shown in FIG. 7 , it is assumed that the item "target" corresponds to "non-volatile memory," the item "measures against cause" corresponds to "check with the component vendor whether it is okay to use the same control as for the conventional product and make appropriate settings," and the candidates for the content that User 1 should input into the FMEA sheet are three items: "failure mode," "measures against impact," and "cause of defect."

[0069] In this case, on a display or the like on which the display information 33 of Figure 4 is displayed, user 1 selects "data corruption" as the "failure mode," selects "incorrect control terminal setting" as the "cause of failure," and selects "add ECC" as the "measure against the impact."

[0070] As a result of the above operation, the selection results of user 1 in FIG. 4 are reflected in the respective items of the FMEA sheet, as shown in the example of FIG.

[0071] According to this embodiment, when creating an FMEA sheet, the safety analysis support system displays the performance data registered in the safety-related DB 21 in association with each perspective corresponding to the target and item of the FMEA sheet, thereby preventing the user from focusing only on the frequency of appearance of the performance data and providing the user with display information 33 that assists in creating the FMEA sheet. As a result, it is possible to easily input the analysis results when creating the FMEA sheet.

[0072] Second Embodiment A safety analysis support system and a safety analysis support method according to this embodiment will be described. In the following description, components similar to those described in the above-described embodiment will be denoted by the same reference numerals, and detailed descriptions thereof will be omitted as appropriate.

[0073] <Configuration of Safety Analysis Support System> In the safety analysis support system according to the first embodiment, the case where the amount of display information 33 is relatively small has been described.

[0074] However, it is also assumed that the user 1 needs a lot of display information 33 (more detailed display information 33) when creating an FMEA sheet. For example, there may be a case where display information 33 is needed, such as whether a write error displayed as a failure mode viewpoint occurred during maintenance or during operation, or what data was involved. In other words, there may be a case where information about the detailed situation at the time of failure occurrence is needed.

[0075] Therefore, in the safety analysis support system according to this embodiment, when there is a large amount of information that forms the background of a viewpoint in the safety analysis support system according to the first embodiment, the information is displayed in a list form for detailed display.

[0076] The configuration of the safety analysis support device according to this embodiment is the same as that of the safety analysis support device 10 shown in FIG.

[0077] As in the first embodiment, the analysis support function 23 determines the number of viewpoints using the extraction information and link information generated by the relationship generation function 24. Then, the analysis support function 23 determines the shape of the target viewpoint display 42 with the same number of sides as the number of viewpoints.

[0078] For example, if there are three types of viewpoint indexes 41, the nonvolatile memory, which is the target viewpoint display 42, is displayed as a triangle according to the number of related items, as shown in the example of Fig. 8. Then, the output control function 25 outputs an instruction to connect each side of the nonvolatile memory to each viewpoint with a line. Here, Fig. 8 is a diagram showing another example of the display information 33.

[0079] In addition, when the user 1 selects a related information display 43 that is displayed in duplicate, the display transitions from Fig. 8 to Fig. 9, displaying detailed information about the status or target of the item. Here, Fig. 9 is a diagram showing an example of background information (detailed information) corresponding to each related information display 43.

[0080] This allows user 1 to check the background information (detailed information) of the selected item.

[0081] According to this embodiment, when creating an FMEA sheet, background information corresponding to the related information display 43 can be displayed in a list. Therefore, when creating an FMEA sheet, all information can be provided to the user without omission. As a result, when creating an FMEA sheet, analysis results can be checked efficiently and input can be made easily.

[0082] Third Embodiment A safety analysis support system and a safety analysis support method according to this embodiment will be described. In the following description, components similar to those described in the above embodiments will be denoted by the same reference numerals, and detailed descriptions thereof will be omitted as appropriate.

[0083] <Configuration of the Safety Analysis Support System> When creating an FMEA sheet, it is possible that multiple names are pre-set for the target items of the FMEA sheet. For example, it is possible that sensors, non-volatile memory, communication I / F, CPU, etc. are pre-set.

[0084] Therefore, in the safety analysis support system according to this embodiment, when the target items of the FMEA sheet are set in advance, the target viewpoints are extracted from the FMEA sheet and displayed as display information 33 .

[0085] The operation of the safety analysis support system according to this embodiment will be described below with reference to Fig. 10. Fig. 10 is a diagram showing an example of the operation of the safety analysis support system according to this embodiment.

[0086] Sheet information 32, which is information related to the FMEA sheet, is stored in the safety analysis support device 10 from the user 1 via the input control function 26. Then, target information 34 is extracted from the sheet information 32 and input to the relationship generation function 24.

[0087] The relation generating function 24 extracts necessary information (performance data) from the safety-related DB 21 based on the target information 34, and further calculates the connection relationships between the information, and outputs the extracted information and link information.

[0088] The analysis support function 23 generates display information 33 (display of interrelationships of failure effects) for assisting input into the FMEA sheet based on the results of the sheet information 32 entered by the user 1, the extraction information, and the link information. Furthermore, the analysis support function 23 displays the display information 33 using the output control function 25.

[0089] Then, the user 1 refers to the display information 33 and reflects it in the FMEA sheet (sheet information 32) via the input control function 26.

[0090] According to this embodiment, when creating an FMEA sheet, it is possible to extract target viewpoints directly from the sheet information 32 without setting the safety-related setting file 22. Therefore, when creating an FMEA sheet, it is possible to provide the user with all the information without omission. As a result, when creating an FMEA sheet, it is possible to efficiently check the analysis results and to easily input the information.

[0091] <Regarding the Effects Produced by the Multiple Embodiments Described Above> Next, examples of the effects produced by the multiple embodiments described above will be described. Note that in the following description, the effects will be described based on the specific configurations exemplified in the multiple embodiments described above, but these may be replaced with other specific configurations exemplified in the present specification to the extent that similar effects are produced. In other words, for convenience, only one of the associated specific configurations may be described as a representative below, but the representatively described specific configuration may be replaced with another associated specific configuration.

[0092] Furthermore, the replacement may be made across multiple embodiments, i.e., configurations illustrated in different embodiments may be combined to produce the same effect.

[0093] According to the embodiment described above, the safety analysis support system extracts, as extracted information, performance data corresponding to an item to be displayed from the safety-related database 21, in which performance data, which is information about past FMEA sheets and case studies, is stored in association with at least one item of the FMEA sheet. Among the extracted information, information associated with the target is referred to as related information (related information display 43). Then, in a first display (display information 33), the item and the related information (related information display 43) are displayed in association with each other, and the target (target perspective display 42) for which the FMEA sheet is to be created and the related information (related information display 43) are displayed in association with each other. Then, in a second display (e.g., a display on which the FMEA sheet shown in FIG. 7 is displayed) different from the first display (display information 33), an FMEA sheet reflecting the selection result of the related information in the first display (display information 33) is displayed.

[0094] According to this configuration, when creating an FMEA sheet, the performance data registered in the safety-related DB 21 is displayed in association with each viewpoint corresponding to the target and item of the FMEA sheet, thereby preventing the user from focusing only on the frequency of appearance of the performance data, and providing the user with display information 33 that assists in creating the FMEA sheet. As a result, it is possible to easily input the analysis results when creating the FMEA sheet.

[0095] Furthermore, even if other configurations shown as examples in this specification are appropriately added to the above configuration, that is, even if other configurations in this specification that were not mentioned as the above configuration are appropriately added, the same effect can be achieved.

[0096] Furthermore, according to the embodiment described above, based on the safety-related setting file 22 indicating the items of the FMEA sheet to be displayed, extraction information is extracted from the safety-related database 21. With this configuration, when creating an FMEA sheet, it is possible to extract performance data from the safety-related database 21 based on the safety-related setting file 22 and provide the user with display information 33 that assists in creating the FMEA sheet.

[0097] Furthermore, according to the embodiment described above, the safety-related setting file 22 includes items related to at least one of countermeasures, failure modes, defect causes, and applications. With this configuration, when creating an FMEA sheet, the items of the FMEA sheet can be displayed based on the safety-related setting file 22.

[0098] Furthermore, according to the embodiment described above, based on the items described in the FMEA sheet, extracted information is extracted from the safety-related database 21. With this configuration, when creating an FMEA sheet, it is possible to extract target viewpoints directly from the sheet information 32 without setting the safety-related setting file 22.

[0099] Furthermore, according to the embodiment described above, the safety-related database 21 includes performance data related to at least one of the failure state, safety mechanism, general usage method, failure state in the general usage method, safety measure, quality control factor, and preventive measure. With this configuration, when creating an FMEA sheet, the performance data registered in the safety-related database 21 can be displayed in association with each viewpoint corresponding to the target and item of the FMEA sheet.

[0100] Furthermore, according to the embodiment described above, in the first display, a plurality of items are arranged around the target, and the target and related information are linked and displayed. With this configuration, the relationship between the target of the FMEA sheet and the related information is displayed in an easy-to-understand manner, which effectively assists in creating the FMEA sheet.

[0101] Furthermore, according to the embodiment described above, in the first display, the object is displayed as a polygon with the number of sides corresponding to the number of items associated with the object. With this configuration, the shape of the object viewpoint display 42 in the display information 33 can be flexibly changed according to the number of items.

[0102] Furthermore, according to the embodiment described above, the related information in the first display is displayed so that transition to related detailed information is possible. With such a configuration, when creating an FMEA sheet, the performance data registered in the safety-related DB 21, and further the detailed information as necessary, are displayed in association with each perspective corresponding to the target and item of the FMEA sheet, thereby making it possible to provide the user with sufficient display information 33 to assist in creating the FMEA sheet.

[0103] According to the embodiment described above, in the safety analysis support method, performance data corresponding to an item to be displayed is extracted as extracted information from a safety-related database 21 in which performance data, which is information about past FMEA sheets and case studies, is stored in association with at least one item of the FMEA sheet. Among the extracted information, information associated with the target is referred to as related information. Then, in a first display (display information 33), the item and the related information are displayed in association with each other, and the target for which an FMEA sheet is to be created and the related information are also displayed in association with each other. Then, in a second display different from the first display (display information 33), an FMEA sheet reflecting the selection result of the related information in the first display (display information 33) is displayed.

[0104] According to this configuration, when creating an FMEA sheet, the performance data registered in the safety-related DB 21 is displayed in association with each viewpoint corresponding to the target and item of the FMEA sheet, thereby preventing the user from focusing only on the frequency of appearance of the performance data, and providing the user with display information 33 that assists in creating the FMEA sheet. As a result, it is possible to easily input the analysis results when creating the FMEA sheet.

[0105] Unless otherwise specified, the order in which the processes are performed can be changed.

[0106] Furthermore, even if other configurations shown as examples in this specification are appropriately added to the above configuration, that is, even if other configurations in this specification that were not mentioned as the above configuration are appropriately added, the same effect can be achieved.

[0107] <Regarding Modifications of the Multiple Embodiments Described Above> In the multiple embodiments described above, the dimensions, shapes, relative positional relationships, and implementation conditions of each component may be described, but these are merely examples in all aspects and are not limiting.

[0108] Therefore, countless modifications and equivalents not shown as examples are contemplated within the scope of the technology disclosed in the present specification, including, for example, modifying, adding, or omitting at least one component, and further, extracting at least one component from at least one embodiment and combining it with a component from another embodiment.

[0109] Furthermore, unless a contradiction arises, when it is stated in the above-described embodiments that "one" component is provided, "one or more" of that component may be provided.

[0110] Furthermore, each component in the embodiments described above is a conceptual unit, and the scope of the technology disclosed in this specification includes cases where one component is made up of multiple structures, cases where one component corresponds to a part of a structure, and even cases where multiple components are provided in one structure.

[0111] Furthermore, each of the components in the embodiments described above includes structures having other structures or shapes as long as they perform the same function.

[0112] Furthermore, the descriptions in this specification are incorporated by reference for all purposes related to the present technology, and none of them are admitted to be prior art.

[0113] Furthermore, each component described in the above-described embodiments is envisioned as software or firmware, as well as corresponding hardware, which may be referred to as, for example, a "processing circuitry."

[0114] 21 Safety-related database, 22 Safety-related configuration file, 102 Fault conditions, 103 Safety mechanisms, 104 Quality control factors, 105 Preventive measures, 106 General usage, 107 Fault conditions, 108 Safety measures.

Claims

1. A safety analysis support system for supporting the creation of an FMEA sheet for a safety analysis of a target, the safety analysis support system comprising: a processing circuit for executing a program; and a storage device for storing the program to be executed, the processing circuit executing the program, extracting, as extracted information, the performance data corresponding to the item to be displayed from a safety-related database in which performance data, which is information on the past FMEA sheets and cases, and at least one item of the FMEA sheet are stored in association with each other; Among the extracted information, information associated with the target is regarded as related information; In a first display, the item and the related information are displayed in association with each other, and the target for which the FMEA sheet is to be created and the related information are displayed in association with each other; displaying, in a second display different from the first display, the FMEA sheet reflecting a selection result of the related information in the first display; Safety analysis support system.

2. The safety analysis support system according to claim 1, extracting the extracted information from the safety-related database based on a safety-related setting file indicating the items of the FMEA sheet to be displayed; Safety analysis support system.

3. The safety analysis support system according to claim 2, The safety-related configuration file includes the items related to at least one of countermeasures, failure modes, fault causes, and applications. Safety analysis support system.

4. The safety analysis support system according to claim 1, Extracting the extracted information from the safety-related database based on the items described in the FMEA sheet; Safety analysis support system.

5. A safety analysis support system according to any one of claims 1 to 4, the safety-related database includes the performance data relating to at least one of a fault condition, a safety mechanism, a general use method, a fault condition of a general use method, a safety measure, a quality control factor, and a preventive measure; Safety analysis support system.

6. A safety analysis support system according to any one of claims 1 to 4, In the first display, the plurality of items are arranged with the target at the center, and the target and the related information are displayed in association with each other. Safety analysis support system.

7. A safety analysis support system according to any one of claims 1 to 4, In the first display, the object is displayed as a polygon having a number of sides corresponding to the number of the items to which it is associated. Safety analysis support system.

8. A safety analysis support system according to any one of claims 1 to 4, the related information in the first display is displayed in a manner that allows transition to related detailed information; Safety analysis support system.

9. A safety analysis support method for supporting the creation of an FMEA sheet regarding a safety analysis of a target, extracting, as extracted information, the performance data corresponding to the item to be displayed from a safety-related database in which performance data, which is information on the past FMEA sheets and cases, and at least one item of the FMEA sheet are stored in association with each other; Among the extracted information, information associated with the target is regarded as related information; In the first display, the item and the related information are displayed in association with each other, and the target for which the FMEA sheet is to be created and the related information are displayed in association with each other; displaying the FMEA sheet reflecting a selection result of the related information in the first display in a second display different from the first display; Safety analysis support method.