JP6673588B2 - Work instruction device, system, method and program - Google Patents

Description

  The present invention relates to a work instruction device, a system, a method, and a program.

  If a failure occurs in a device to be monitored, such as a server, a monitoring device, an automatic teller machine, or a copier, a specialized maintenance technician determines whether maintenance work such as parts replacement is necessary based on the content of the failure. And a work instruction is issued based on the result of the failure analysis, and a maintenance worker performs maintenance work based on the work instruction. In recent years, systems for performing failure analysis on computers using artificial intelligence have been used. In such a system, there is a system in which the total cost (total) of replacement parts, work, and the like generated by failure analysis is calculated (for example, see Patent Document 1).

JP 2013-156856 A

  The following analysis is given by the present inventors.

  However, in the system described in Patent Literature 1, since the range of parts, work, and the like is not determined from the viewpoint of minimizing the total cost of maintenance work, the total cost may increase.

  A main object of the present invention is to provide a work instruction apparatus, a system, a method, and a program capable of giving a work instruction while minimizing the total cost of maintenance work.

  A work instruction device according to a first aspect controls an acquisition unit that acquires data, an output unit that outputs data, a storage unit that stores data, and the acquisition unit, the output unit, and the storage unit. And a control unit for performing predetermined information processing. The storage unit includes: a first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel costs are arranged in association with each other; customer identification information for identifying a customer; device identification information for identifying a device; A second database in which the event identification information for identifying the failure and the number of reports are linked and organized, the device identification information for identifying the device, the event identification information for identifying the failure, and the need for immediate component replacement to recover from the corresponding failure Whether or not replacement is required, whether replacement is required, the replacement target parts, the probability of occurrence of the corresponding replacement target parts causing failures, component costs, work costs, failure analysis time, and analysis unit time costs are arranged in association with each other. And 3 databases. The control unit, when acquiring the failure occurrence report including the customer identification information, the device identification information, and the event identification information related to the monitored device through the acquisition unit, the device identification information and the event identification of the failure occurrence report A process of selecting the replacement target component corresponding to the highest occurrence probability among the occurrence probabilities in the third database corresponding to information is performed. The control unit performs a process of determining whether the exchange is unnecessary by referring to the necessity of the exchange in the third database corresponding to the device identification information and the event identification information of the failure occurrence notification. . The control unit, when the exchange is unnecessary, the moving cost of the first database corresponding to the customer identification information and the device identification information of the failure occurrence report, and the device identification information of the failure occurrence report And the event identification information and the component cost and the work cost of the third database corresponding to the selected component to be replaced, the first expected replacement of the selected component to be replaced. A process for calculating a part replacement cost is performed. The control unit, when the exchange is unnecessary, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report, and the failure occurrence report Based on the device identification information and the event identification information, and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected component to be replaced, based on the analysis cost generated in the past. Is performed to calculate the first analysis cost that is the sum of When the first analysis cost is equal to or greater than the first component replacement cost, the control unit may generate a failure including the selected replacement target component and determining that replacement can minimize the total cost. A process of outputting the first work instruction information indicating that the operation has been performed through the output unit is performed.

  The work instruction system according to the second viewpoint includes a work instruction device according to the first viewpoint, a monitored device, and a network that communicably connects the work instruction device and the monitored device. Prepare.

  The work instruction method according to the third aspect includes a first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel costs are associated with each other, customer identification information for identifying a customer, and a device. A second database in which the device identification information to be identified, the event identification information to identify the failure, and the number of reports are arranged in association with each other, the device identification information to identify the device, the event identification information to identify the failure, and the recovery from the corresponding failure. The necessity of replacement indicating whether replacement of parts is necessary or not immediately, the replacement target part, the probability of occurrence of the corresponding replacement target part causing a failure, parts cost, work cost, failure analysis time and analysis unit time cost Is a work instruction method for giving an instruction to a work using a device that stores a third database that is arranged in association with the third database. The work instruction method corresponds to the device identification information and the event identification information of the failure occurrence report when acquiring a failure occurrence report including customer identification information, device identification information, and event identification information related to the monitored device. Selecting the replacement target component corresponding to the highest occurrence probability among the occurrence probabilities of the third database; and selecting the replacement of the third database corresponding to the device identification information and the event identification information of the failure occurrence notification. Determining whether or not replacement is unnecessary by referring to the no., And when the replacement is unnecessary, the first database corresponding to the customer identification information and the device identification information of the failure occurrence report is stored in the first database. Corresponds to the transfer cost, the device identification information and the event identification information of the failure occurrence report, and the selected replacement target part. Calculating a first component replacement cost expected in replacing the selected component to be replaced based on the component cost and the operation cost of the third database, and when the replacement is unnecessary. The customer identification information of the failure occurrence report, the number of reports in the second database corresponding to the device identification information and the event identification information, and the device identification information and the event identification information of the failure occurrence report, and, Calculating a first analysis cost that is a sum of the analysis costs generated in the past based on the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component; When the first analysis cost is equal to or greater than the first component replacement cost, replacement including the selected replacement target component minimizes the total cost. Comprising the steps of faults determined that it is to output the work instruction information indicating that it has generated, the.

  A program according to a fourth aspect includes a first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel costs are associated with each other, customer identification information for identifying a customer, and a device. A second database in which the device identification information, the event identification information for identifying the failure and the number of reports are arranged in association with each other, the device identification information for identifying the device, the event identification information for identifying the failure, and the component for recovering from the corresponding failure. Correlation between the necessity of replacement indicating whether or not replacement is necessary, the parts to be replaced, the probability of occurrence of the corresponding replacement part causing a failure, parts cost, work cost, failure analysis time and analysis unit time cost This is a program that causes a device that stores the organized third database and a process that instructs work to be executed. The program, when acquiring the failure occurrence report including the customer identification information, the device identification information, and the event identification information of the monitored device through the acquisition unit, the device identification information and the event identification information of the failure occurrence report Selecting the replacement target component corresponding to the highest occurrence probability among the occurrence probabilities of the third database corresponding to the third database, and selecting the third component corresponding to the device identification information and the event identification information of the failure occurrence notification. A process of determining whether or not the exchange is unnecessary by referring to the necessity of the exchange in the database; and, when the exchange is unnecessary, corresponding to the customer identification information and the device identification information of the failure occurrence report. The travel cost of the first database to be executed, the device identification information and the event identification information of the failure occurrence report, and the selected A process of calculating a first component replacement cost expected for replacement of the selected replacement target component based on the component cost and the operation cost of the third database corresponding to the replacement target component; Is unnecessary, the customer identification information of the failure occurrence report, the number of reports in the second database corresponding to the device identification information and the event identification information, the device identification information of the failure occurrence report and the A first analysis that is a sum of analysis costs generated in the past based on the event identification information and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component; A process for calculating a cost, wherein the first analysis cost is equal to or greater than the first component replacement cost, and the replacement method includes the selected replacement target part. And outputting the work instruction information indicating that faults determined that the total cost can be minimized occurs, thereby executing.

  According to the first to fourth aspects, it is possible to give a work instruction while minimizing the total cost of the maintenance work.

1 is a block diagram schematically illustrating a configuration of a work instruction system according to a first embodiment. 5 is a table schematically illustrating a configuration of a monitoring target device database used in the work instruction system according to the first embodiment. 4 is a table schematically illustrating a configuration of a report history database used in the work instruction system according to the first embodiment. 5 is a table schematically illustrating a configuration of a failure database used in the work instruction system according to the first embodiment. 5 is a table schematically illustrating a configuration of an exchange work database used in the work instruction system according to the first embodiment. 5 is a table schematically illustrating a configuration of a failure analysis database used in the work instruction system according to the first embodiment. 5 is a flowchart schematically illustrating an operation of a control unit of the work instruction device in the work instruction system according to the first embodiment. FIG. 8 is a flowchart following FIG. 7 schematically illustrating an operation of a control unit of the work instruction device in the work instruction system according to the first embodiment. FIG. 9 is a flowchart that schematically illustrates the operation of the control unit of the work instruction device in the work instruction system according to the first embodiment, following FIG. 8. 10 is a flowchart following FIG. 9 schematically illustrating the operation of the control unit of the work instruction device in the work instruction system according to the first embodiment. FIG. 9 is a block diagram schematically illustrating a configuration of a work instruction device according to a second embodiment. 9 is a flowchart schematically illustrating an operation of a control unit of the work instruction device according to the second embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. Note that, in the present application, when reference numerals are attached in the drawings, they are only for the purpose of facilitating understanding, and are not intended to limit to the illustrated embodiments. Further, the following embodiments are merely examples, and do not limit the present invention. Furthermore, connection lines between blocks in the drawings and the like referred to in the following description include both bidirectional and unidirectional. The one-way arrow schematically indicates the flow of a main signal (data), and does not exclude bidirectionality.

[Embodiment 1]
A work instruction system according to the first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram schematically illustrating the configuration of the work instruction system according to the first embodiment. FIG. 2 is a table schematically illustrating a configuration of a monitoring target device database used in the work instruction system according to the first embodiment. FIG. 3 is a table schematically illustrating a configuration of a report history database used in the work instruction system according to the first embodiment. FIG. 4 is a table schematically illustrating a configuration of a failure database used in the work instruction system according to the first embodiment. FIG. 5 is a table schematically illustrating a configuration of the replacement work database used in the work instruction system according to the first embodiment. FIG. 6 is a table schematically illustrating a configuration of the failure analysis database used in the work instruction system according to the first embodiment.

  The work instruction system 1 is a system that gives a work instruction when a failure occurs in the monitoring target device 10 while minimizing the total cost of maintenance work (see FIG. 1). Here, "minimizing the total cost of the maintenance work" refers to specifying a replacement part, a work, and the like so that the total cost of the maintenance work is minimized by analyzing the failure. Here, the components include electronic components, mechanical components, modules, units, the entire apparatus, and the like. The work instruction system 1 includes a monitoring target device 10, a work instruction device 20, and a network 40.

  The monitoring target device 10 is a device monitored by the work instruction device 20 (see FIG. 1). The monitoring target device 10 is used by a customer. The monitoring target device 10 includes not only a single device but also a system in which a plurality of devices cooperate. The monitoring target device 10 stores a customer code and device code corresponding to the monitoring target device 10 itself, and an event code table (not shown) in which a failure content (situation) is associated with an event code. The monitoring target device 10 has a function of specifying the content of a failure when a failure has occurred in itself. The monitoring target device 10 has a function of specifying an event code corresponding to the specified failure content based on the event code table. The monitoring target device 10 has a function of generating a failure notification including the specified event code, customer code, and device code. The monitoring target device 10 has a function of transmitting the generated failure occurrence notification to the work instruction device 20. The failure notification includes, for example, a notification including a soft media error of the disk.

  The work instructing device 20 is a device that issues a work instruction when a failure occurs in the monitoring target device 10 while minimizing the total cost of the maintenance work (see FIG. 1). The work instruction device 20 receives information from the monitoring target device 10 via the network 40. The work instruction device 20 includes a communication unit 21, a control unit 22, an input unit 23, an output unit 24, and a storage unit 25 as main components.

  The communication unit 21 is a functional unit (for example, an interface) for communicating (transmitting and receiving) information (see FIG. 1). The communication unit 21 is communicably connected to the network 40.

  The control unit 22 is a functional unit that controls the communication unit 21, the input unit 23, the output unit 24, and the storage unit 25 (see FIG. 1). The control unit 22 controls the communication unit 21 to transmit and receive information to and from the monitoring target device 10. The control unit 22 controls the input unit 23 to take in information input from the input unit 23. The control unit 22 controls the output unit 24 to cause the output unit 24 to output information. The control unit 22 inputs and outputs data to and from the storage unit 25, and writes and reads data to and from the databases 31 to 35 stored in the storage unit 25.

  The control unit 22 performs predetermined information processing by executing software. The control unit 22 has a clock function for managing the date and time. By executing the failure analysis program 30, the control unit 22 performs information processing for minimizing the total cost of the maintenance work and giving a work instruction when a failure occurs in the monitoring target device 10. Details of the information processing will be described later.

  The input unit 23 is a functional unit for inputting information (see FIG. 1). As the input unit 23, for example, a keyboard, a mouse, a touch panel, a microphone, and other input means can be used, and an information terminal having an input unit communicably connected via a communication unit (not shown) can be used. Good.

  The output unit 24 is a functional unit for outputting information (display, audio output, printing, etc.) (see FIG. 1). As the output unit 24, for example, a display for performing display, a printer for performing printing, or other output means can be used, and an information terminal or the like having an output unit communicably connected via a communication unit (not shown) is used. Is also good. Instead of using the output unit 24, information is output using another information terminal or the like (not shown; for example, a terminal used by a maintenance manager) connected via the communication unit 21 and the network 40. It may be.

  The storage unit 25 is a functional unit that stores information such as various data and programs (see FIG. 1). As the storage unit 25, for example, a hard disk device or an externally connected RAID (Redundant Array of Independent Disks) device or the like can be used, and any nonvolatile storage device may be used. The storage unit 25 mainly stores, as information, a failure analysis program 30, a monitored device database 31, a report history database 32, a failure database 33, a replacement work database 34, and a failure analysis database 35. I have.

  The failure analysis program 30 is a program for analyzing a failure so that the total cost of the maintenance work is minimized. The failure analysis program 30 is executed by the control unit 22, refers to the data in each of the databases 31 to 35, and is executed to output to the output unit 24 a work instruction that minimizes the total cost of the maintenance work.

  The monitoring target device database 31 is a database in which information on the monitoring target devices 10 is arranged (see FIG. 2). In the monitoring target device database 31, a customer code (a code is an identification code represented by a numeral or a symbol; the same applies hereinafter), a device code, a customer name, a location, and a travel cost are associated with each other. . Here, the customer code is a code for identifying a customer (corresponding to customer identification information), and can be used to specify the user of the monitored device 10 and the installation location. The device code is a code for identifying the device (corresponding to device identification information), and can be used to specify the type of the monitored device 10. The customer name is the name of the customer. The location is the location of the customer. The moving cost is a moving cost set according to the distance between the worker's base and the customer's location.

  The report history database 32 is a database in which report histories from the monitored device 10 (a customer using the monitored device 10 is also possible) are arranged (see FIG. 3). In the report history database 32, a customer code, a device code, an event code, a report reception date and time, and the number of reports are associated with each other. Here, the event code is a code for identifying a failure (corresponding to event identification information). The report reception date is the date when the failure report was received. The date and time of receiving the report may be the date and time when the failure report was received in a predetermined period, such as the past year. The number of reports is the number of failure reports received for the same customer code, device code, and event code. In addition, the number of reports may be the number of failure reports received for the same customer code, device code, and event code during a predetermined period, such as the past year.

  The failure database 33 is a database that organizes information on failures (see FIG. 4). In the failure database 33, a device code, an event code, necessity of replacement, a replacement target component, and an occurrence probability are associated with each other. Here, the necessity of replacement is information indicating whether replacement of parts is necessary or not immediately to recover from a corresponding failure. The replacement target component is information (a code may be used) for identifying a component to be replaced. The occurrence probability is a probability that the corresponding replacement target component causes a failure.

  The exchange work database 34 is a database in which information on exchange work is arranged (see FIG. 5). In the replacement work database 34, a device code, an event code, a replacement target part, a part cost, and a work cost are associated with each other. Here, the component cost is the price of the component. The work cost is a cost required for the replacement work, and can be set in consideration of, for example, a work time, a labor cost per hour, and the like.

  The failure analysis database 35 is a database in which information on failure analysis is arranged (see FIG. 6). In the failure analysis database 35, a device code, an event code, a part to be replaced, a failure analysis time, an occurrence probability, and an analysis unit time cost are associated with each other. Here, the failure analysis time is a time required for analyzing a failure per report, and can be set in consideration of, for example, a confirmation work time, a confirmation man-hour, and the like. The analysis unit time cost is the cost required for analysis per unit time. The occurrence probability in the failure analysis database 35 may be omitted, and the occurrence probability in the failure database 33 may be used.

  The network 40 is an information communication network that communicably connects the work instruction device 20 and the monitoring target device 10 (see FIG. 1).

  Next, the operation of the control unit of the work instruction device in the work instruction system according to the first embodiment will be described with reference to the drawings. 7 to 10 are flowcharts schematically showing the operation of the work instruction device in the work instruction system according to the first embodiment. In addition, please refer to FIGS. 1 to 6 for the configuration of the work instruction system 1.

  As a premise, it is assumed that the failure analysis program 30 is being executed in the control unit 22 of the work instruction device 20. In addition, the administrator needs to change the data in the databases 31 to 35 as in the case where the number of monitoring target devices (corresponding to 10 in FIG. 1) is increased or when the failure occurrence probability is changed by the statistical information of the failure cases. In this case, the administrator operates the work instruction device 20 to update the data in the databases 31 to 35.

  First, the control unit 22 of the work instruction device 20 receives a failure occurrence report from the monitored device 10 in which the failure has occurred via the communication unit 21 via the network 40, and temporarily stores the received failure occurrence information in the storage unit 25. (Step A1; see FIG. 7). Here, the failure occurrence report includes a customer code, a device code, and an event code related to the monitored device 10.

  Next, the control unit 22 temporarily stores the date and time at the time of receiving the failure occurrence notification (corresponding to the notification reception date and time) in the storage unit 25 (step A2; see FIG. 7). Step A2 may be performed simultaneously with step A1, or may be performed before step A1.

  Next, the control unit 22 extracts the customer name, the location, and the travel cost corresponding to the customer code and the device code of the received failure occurrence report from the monitored device database 31, and extracts the extracted customer name, location, and travel cost. Is temporarily stored in the storage unit 25 (step A3; see FIG. 7). Here, at the time of temporary storage, the transfer cost is temporarily stored as an item (α).

  Next, the control unit 22 extracts, from the failure database 33, the necessity of replacement corresponding to the device code and the event code of the received failure occurrence notification, the replacement target component, and the occurrence probability. The parts to be replaced and the occurrence probabilities are temporarily stored in the storage unit 25 (step A4; see FIG. 7). Here, when there are a plurality of extracted necessity of replacement, replacement target parts, and occurrence probabilities, all the necessity of replacement, replacement target parts, and occurrence probabilities are extracted and temporarily stored. Further, at the time of temporary storage, the necessity of replacement is temporarily stored as an item (β).

  The control unit 22 determines whether or not there are a plurality of parts to be replaced temporarily stored in step A4 (step A5; see FIG. 7). When there is only one replacement target component temporarily stored (NO in step A5), the process proceeds to step A7.

  When there are a plurality of temporarily stored replacement target parts (YES in step A5), the control unit 22 selects a replacement target part corresponding to the largest occurrence probability among the occurrence probabilities temporarily stored in step A4 (step A4). A6; see FIG. 7). Thereafter, the process proceeds to step A8.

  When there is only one replacement target component temporarily stored (NO in step A5), the control unit 22 selects the replacement target component (corresponding to the largest occurrence probability) temporarily stored in step A4 (step A7; (See FIG. 7). Thereafter, the process proceeds to step A8.

  After step A6 or step A7, the control unit 22 refers to the necessity of the exchange of the item (β) temporarily stored in step A4 to determine whether the exchange is necessary (step A8; FIG. 7). If the replacement is not necessary (NO in step A8), the process proceeds to step A10.

  If replacement is required (YES in step A8), the control unit 22 determines the customer name and location of the failure occurrence report temporarily stored in step A1, and the replacement target component (mostly) selected in step A6 or step A7. The output unit 24 outputs work instruction information (fifth work instruction information) including a replacement target component corresponding to a high probability of occurrence and a predetermined comment (for example, "a failure requiring replacement" has occurred). (Step A9; see FIG. 7). Thereafter, the process returns to the start, erases the temporarily stored data, and waits for the reception of the failure notification.

  If the exchange is not required (NO in step A8), the control unit 22 checks the customer code, the device code, and the event code of the received (temporarily stored) failure occurrence report in the report history database 32 of the storage unit 25. (Step A10; see FIG. 8). If there is no corresponding record (NO in step A10), the process proceeds to step A12.

  If there is a corresponding record (YES in step A10), the control unit 22 updates the report reception date and time and the number of reports of the corresponding record in the report history database 32 of the storage unit 25 (step A11; see FIG. 8). ). Thereafter, the process proceeds to step A13. Here, in updating the report reception date and time and the number of reports, the temporarily stored date is added to the report reception date and time column of the corresponding record in the report history database 32, and the report history is updated. One is added to the number in the column of the number of reports of the corresponding record in the database 32.

  If there is no corresponding record (NO in step A10), the control unit 22 newly adds the customer code, the device code, the event code, the date and time of receiving the report, and the number of reports in the report history database 32 (step A12). ; See FIG. 8). Thereafter, the process proceeds to step A13. Here, in addition of customer code, device code, event code, report reception date and time, and the number of reports, the corresponding fields of customer code, device code, event code, report reception date, and the number of reports are newly added. The customer code, device code, and event code temporarily stored in step A1 and the date and time temporarily stored in step A2 are written in each of the columns.

  After step A11 or step A12, the control unit 22 temporarily stores the number of reports updated in step A11 or added in step A12 in the storage unit 25 (step A13; see FIG. 8). Here, at the time of temporary storage, the number of reports is temporarily stored as an item (γ).

  Next, the control unit 22 extracts, from the replacement work database 34, a replacement target component, a component cost, and a work cost corresponding to the device code and the event code of the received failure occurrence notification, and extracts the extracted replacement target component, the component cost. The work cost is temporarily stored in the storage unit 25 (step A14; see FIG. 8). Here, when there are a plurality of replacement target parts in the replacement work database 34, all the replacement target parts, the part cost, and the work cost are extracted and temporarily stored.

  Next, the control unit 22 calculates the sum of the component cost and the work cost (part work cost) corresponding to the replacement target component selected in step A6 or step A7 among the replacement target components temporarily stored in step A14. The calculated sum (part work cost) is temporarily stored in the storage unit 25 as an item (δ) (step A15; see FIG. 8).

  Next, the control unit 22 extracts, from the failure analysis database 35, the device code of the received failure occurrence notification, the replacement target component corresponding to the event code, the failure analysis time, the occurrence probability, and the analysis unit time cost. The parts to be replaced, the failure analysis time, the occurrence probability, and the analysis unit time cost are temporarily stored in the storage unit 25 (step A16; see FIG. 8). If there are a plurality of replacement target parts in the failure analysis database 35, all the replacement target parts, the failure analysis time, the occurrence probability, and the analysis unit time cost are extracted and temporarily stored.

  Next, the control unit 22 calculates the failure analysis time and the analysis unit corresponding to the replacement target component (the replacement target component corresponding to the highest occurrence probability) selected in step A6 or step A7 from the data temporarily stored in A16. The time cost is extracted (step A17; see FIG. 8).

  Next, the control unit 22 calculates the product (analysis cost) of the failure analysis time and the analysis unit time cost extracted in step A17, and uses the calculated product (analysis cost) as an item (ε) in the storage unit 25. (Step A18; see FIG. 9).

  Next, the control unit 22 calculates the sum of the moving cost of the item (α) temporarily stored in step A3 and the part work cost of the item (δ) temporarily stored in step A15 (first component replacement cost). The calculated first part replacement cost is temporarily stored in the storage unit 25 (step A19; see FIG. 9). Here, the first component replacement cost corresponds to a cost expected in replacing the selected replacement target component.

  Next, the control unit 22 calculates the product (first analysis cost) of the number of reports of the item (γ) temporarily stored in step A13 and the analysis cost of the item (ε) temporarily stored in step A18. , And temporarily stores the calculated first analysis cost in the storage unit 25 (step A20; see FIG. 9). Step A20 may be performed before step A19. Here, the first analysis cost corresponds to the total cost of the analysis costs incurred in the past.

  Next, the control unit 22 determines whether the first analysis cost temporarily stored in Step A20 is smaller than the first component replacement cost temporarily stored in Step A19 (Step A21; see FIG. 9). If the first analysis cost is smaller than the first component replacement cost (YES in step A21), the process proceeds to step A23.

  If the first analysis cost is equal to or greater than the first component replacement cost (NO in step A21), the control unit 22 selects the customer name and location of the failure occurrence report temporarily stored in step A1, and selects the customer in step A6 or step A7. Instruction information including the replaced part (replacement part corresponding to the highest probability of occurrence) and a predetermined comment (for example, "a failure has been determined that replacement can minimize the total cost") (First work instruction information) is output from the output unit 24 (step A22; see FIG. 9), and thereafter, the process returns to the start, deletes the temporarily stored data, and waits for the reception of the failure notification.

  When the first analysis cost is smaller than the first component replacement cost (YES in step A21), the control unit 22 determines the number of reports of the item (γ) temporarily stored in step A13, the predetermined future predetermined period, and , Is used to calculate the number of future reports expected to report a failure report containing the same event code as the received failure report in the predetermined period in the future, and calculate the calculated number of future reports in the item ( γ ′) is temporarily stored in the storage unit 25 (step A23; see FIG. 9). Regarding the calculation of the number of future reports in step A23, for example, the period set for the number of reports in the report history database 32 is one year (365 days), and a fault occurrence report of the same event code in the future ζ days is set. When calculating the number of future reports that are expected to be reported, the number of future reports can be calculated by the following formula 1.

[Formula 1]

  Next, the control unit 22 calculates the product (future analysis cost) of the number of future reports of the item (γ ′) temporarily stored in step A23 and the analysis cost of the item (ε) temporarily stored in step A18. And the calculated product (future analysis cost) is temporarily stored in the storage unit 25 (step A24; see FIG. 9).

  Next, the control unit 22 calculates the sum (second analysis cost) of the first analysis cost temporarily stored in step A20 and the future analysis cost temporarily stored in step A24, and calculates the calculated second analysis cost. The cost is temporarily stored in the storage unit 25 (step A25; see FIG. 9). Here, the second analysis cost is equivalent to the analysis cost obtained by adding the total of the analysis costs expected to occur in a predetermined period in the future (future analysis cost) to the first analysis cost.

  Next, the control unit 22 determines whether or not the second analysis cost temporarily stored in Step A25 is smaller than the first component replacement cost temporarily stored in Step A19 (Step A26; see FIG. 10). If the second analysis cost is smaller than the first component replacement cost (YES in step A26), the process proceeds to step A28.

  When the second analysis cost is equal to or more than the first component replacement cost (NO in step A26), the control unit 22 selects the customer name and location of the failure occurrence report temporarily stored in step A1, and selects the customer in step A6 or step A7. Instruction information including the replaced part (replacement part corresponding to the highest probability of occurrence) and a predetermined comment (for example, "a failure has been determined that replacement can minimize the total cost") (Second work instruction information) is output from the output unit 24 (step A27; see FIG. 10), and thereafter, the process returns to the start, deletes the temporarily stored data, and waits for reception of the failure occurrence report.

  If the second analysis cost is smaller than the first component replacement cost (YES in step A26), the control unit 22 determines whether there are a plurality of replacement target components temporarily stored in step A4 (step A28; FIG. 10). reference). If the number of temporarily replaced parts is one (NO in step A28), the determination processing has been completed in step A21 and step A28, so the process returns to the start, deletes the temporarily stored data, and reports the failure occurrence. Wait for the reception.

  When there are a plurality of temporarily-replaced parts to be replaced (YES in step A28), the control unit 22 determines the moving cost of the item (α) temporarily stored in step A3 and the plurality of occurrence probabilities temporarily stored in step A4. And a plurality of component costs temporarily stored in step A14 and a plurality of operation costs, a second component replacement cost expected in replacing the plurality of replacement target components is calculated, and the calculated second component replacement cost is calculated. The part replacement cost is temporarily stored in the storage unit 25 (step A29; see FIG. 10).

  Here, if there are N parts (N ≧ 2) to be temporarily stored in step A4, the second part replacement cost in step A29 is calculated as follows. First, based on Equation 2, the part work cost “δ (1)” of the part (1), the part work cost “δ (2)” of the parts (1) to (2),. Calculate each of the parts work costs “δ (N)” of 1) to (N). Next, using δ (1) to δ (N) obtained by Expression 2 and the temporarily stored occurrence probabilities r (1) to r (N), the second component is obtained based on Expression 3. Calculate the replacement cost. The component (1) is the component with the highest occurrence probability, the component (2) is the component with the second highest occurrence probability, and the component (N) is the component with the N-th occurrence probability (the component with the highest occurrence probability). Low parts). Also, the component cost (1) is the component cost of the component (1), the operation cost (1) is the operation cost of the component (1), the component cost (2) is the component cost of the component (2), The work cost (2) is the work cost of the part (2), the part cost (N) is the cost of the part (N), and the work cost (N) is the work cost of the part (N).

[Formula 2]

[Equation 3]

  Next, the control unit 22 calculates a plurality of failure analysis times temporarily stored in step A16, a plurality of occurrence probabilities (a plurality of occurrence probabilities temporarily stored in step A4 are also possible), and a plurality of analysis unit times. Based on the cost, a third analysis cost expected for replacement of a plurality of parts to be replaced is calculated, and the calculated third analysis cost is temporarily stored in the storage unit 25 (step A30; see FIG. 10).

  Here, if there are N (N ≧ 2) parts to be replaced temporarily stored in step A16, the third analysis cost in step A30 is calculated as follows. First, based on Equation 4, the analysis cost “ε (1)” of the part (1), the analysis cost “ε (2)” of the part (2),... ε (N) ”is calculated. Next, using the ε (1) to ε (N) obtained by Expression 4 and the temporarily stored occurrence probabilities r (1) to r (N), a third analysis is performed based on Expression 5. Calculate costs. The component (1) is the component with the highest occurrence probability, the component (2) is the component with the second highest occurrence probability, and the component (N) is the component with the N-th occurrence probability (the component with the highest occurrence probability). Low parts).

[Equation 4]

[Equation 5]

  Next, the control unit 22 determines whether or not the third analysis cost temporarily stored in Step A30 is smaller than the second component replacement cost temporarily stored in Step A29 (Step A31; see FIG. 10). When the third analysis cost is smaller than the second component replacement cost (YES in step A31), the process proceeds to step A33.

  When the third analysis cost is equal to or greater than the second component replacement cost (NO in step A31), the control unit 22 selects the customer name and location of the failure occurrence report temporarily stored in step A1, and selects in step A6 or step A7. Instruction information including the replaced part (replacement part corresponding to the highest probability of occurrence) and a predetermined comment (for example, "a failure has been determined that replacement can minimize the total cost") (Third work instruction information) is output from the output unit 24 (step A32; see FIG. 10). Thereafter, the process returns to the start, deletes the temporarily stored data, and waits for the reception of the failure notification. The parts to be replaced in the work instruction information in step A32 may be a plurality of parts to be temporarily stored in step A4, and may further include a plurality of occurrence probabilities temporarily stored in step A4.

  When the third analysis cost is smaller than the second component replacement cost (YES in step A31), the control unit 22 determines the customer name and location of the failure occurrence report temporarily stored in step A1 and a predetermined comment (for example, "replacement unnecessary"). Is output from the output unit 24 (step A33; see FIG. 10), and then returns to the start and erases the temporarily stored data. Then, it waits for the reception of the failure occurrence report.

  According to the first embodiment, not only the necessity of replacement but also the first analysis cost taking into account the number of reports and the first component replacement cost are compared to determine the replacement. However, the same failure occurrence report is frequently acquired, and when the first analysis cost is equal to or more than the first component replacement cost, the user is prompted to replace the component, thereby minimizing the total cost of the maintenance work and performing the work instruction. In addition, it is possible to prevent the same failure occurrence report, suppress an increase in analysis cost, and reduce unnecessary cost.

  Further, according to the first embodiment, the replacement is determined by comparing the second analysis cost and the first component replacement cost in consideration of the future number of reports, so that even if replacement is not necessary, a predetermined predetermined time is required. When the same failure occurrence report is frequently acquired during the period and the second analysis cost is expected to be higher than the first component replacement cost, the replacement of the component is encouraged, thereby minimizing the total cost of the maintenance work and performing the work instruction. The same failure occurrence report in the future can be prevented, and an increase in analysis cost can be prevented, and wasteful cost can be reduced.

  Further, according to the first embodiment, the replacement is determined by comparing the third analysis cost and the second component replacement cost in consideration of a plurality of replacement target components and a plurality of occurrence probabilities. Even if it is not necessary, when the range of the part causing the failure is widened and the third analysis cost is expected to be higher than the second part replacement cost, the replacement of the part is encouraged, so that the total cost of the maintenance work is increased. Can be instructed, and an increase in the range of parts causing a failure can be prevented, an increase in analysis costs can be prevented, and unnecessary costs can be reduced.

[Embodiment 2]
A work instruction device according to a second embodiment will be described with reference to the drawings. FIG. 11 is a block diagram schematically illustrating a configuration of the work instruction device according to the first embodiment.

  The work instruction device 20 controls an acquisition unit 26 for acquiring data, an output unit 24 for outputting data, a storage unit 25 for storing data, and the acquisition unit 26, the output unit 24, and the storage unit 25. And a control unit 22 that performs the information processing of.

  As the acquiring unit 26, for example, an input unit for inputting data, a receiving unit for receiving data, and the like can be used.

  As the output unit 24, for example, a display unit for displaying data, a printing unit for printing data, or the like can be used.

  The storage unit 25 stores a first database 51, a second database 52, and a third database 53. The first database 51 is a database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel costs are associated with each other. The second database 52 is a database in which customer identification information for identifying a customer, device identification information for identifying a device, event identification information for identifying a failure, and the number of reports are associated with each other. The third database 53 includes device identification information for identifying a device, event identification information for identifying a failure, necessity of replacement indicating whether replacement of a component is necessary or not immediately to recover from a corresponding failure, a replacement target component, This is a database in which the probability of occurrence of a corresponding replacement target component causing a failure, a component cost, a work cost, a failure analysis time, and an analysis unit time cost are associated and arranged.

  The details of the operation of the control unit 22 are as follows.

  Next, the operation of the control unit of the work instruction device according to the second embodiment will be described with reference to the drawings. FIG. 12 is a flowchart schematically illustrating the operation of the control unit of the work instruction device according to the second embodiment.

  First, the control unit 22 obtains a failure occurrence report including customer identification information, device identification information, and event identification information relating to the monitored device (corresponding to 10 in FIG. 1) through the acquisition unit 26. Of the third database 53 corresponding to the device identification information and the event identification information is selected (step B1).

  Next, the control unit 22 performs a process of referring to the necessity of the exchange of the third database 53 corresponding to the device identification information and the event identification information of the failure occurrence notification to determine whether the exchange is unnecessary (see FIG. Step B2). If replacement is necessary (NO in step B2), the process proceeds to step B6.

  If the exchange is not necessary (YES in step B2), the control unit 22 determines the moving cost of the first database 51 corresponding to the customer identification information and the device identification information of the failure report, the device identification information and the event of the failure report. A process of calculating a first component replacement cost expected in replacing the selected replacement target component based on the identification information and the component cost and the operation cost of the third database 53 corresponding to the selected replacement target component. (Step B3).

  Next, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure report, the device identification information and the event identification information of the failure report, and the selected replacement target component. Based on the corresponding failure analysis time and the analysis unit time cost of the third database 53, a process of calculating a first analysis cost that is the sum of the analysis costs generated in the past is performed (step B4). Step B4 may be performed before step B3.

  Next, when the first analysis cost is equal to or greater than the first component replacement cost, the control unit 22 generates a failure including the selected replacement target component and determining that replacement can minimize the total cost. A process of outputting work instruction information (first work instruction information) indicating that the operation has been performed is performed through the output unit 24 (step B5), and thereafter, the process returns to the start and waits for acquisition of a failure occurrence report.

  When the first analysis cost is smaller than the first component replacement cost, the control unit 22 performs a process of outputting, via the output unit 24, work instruction information indicating that a failure that does not require replacement has occurred. be able to.

  If the replacement is necessary (NO in step B2), the control unit 22 outputs the work instruction information (fifth work instruction information) including the selected replacement target component and indicating that a failure requiring replacement has occurred. , A process of outputting through the output unit 24 (step B6), and thereafter, the process returns to the start and waits for the acquisition of the failure occurrence report.

  According to the second embodiment, not only the necessity of replacement but also the first analysis cost in consideration of the number of reports and the first component replacement cost are compared to determine the replacement. However, when the same failure occurrence report is frequently acquired and the first analysis cost is equal to or greater than the first component replacement cost, the user is prompted to replace the component, thereby minimizing the total cost of the maintenance work and performing the work instruction. In addition, it is possible to prevent the same failure occurrence report, suppress an increase in analysis cost, and reduce unnecessary cost.

(Note)
In the present invention, a form of the work instruction device according to the first viewpoint is possible.

In the work instruction device according to the first aspect, the control unit, when the first analysis cost is smaller than the first component replacement cost, includes the customer identification information, the device identification information, and the device identification information of the failure occurrence report. The number of reports in the second database corresponding to the event identification information, the device identification information and the event identification information of the failure occurrence notification, and the failure in the third database corresponding to the selected replacement target component Based on the analysis time, the analysis unit time cost, and a predetermined period set in advance, the second analysis is performed by adding the total of the analysis costs expected to be generated in the future period to the first analysis cost. Calculating the cost, and when the second analysis cost is equal to or greater than the first component replacement cost, replacing the component including the selected replacement target component minimizes the total cost. A second work instruction information indicating that the faults determined to be reduction has occurred, and outputting through the output unit,
Do more.

  In the work instruction device according to the first aspect, when the second analysis cost is smaller than the first component replacement cost, the control unit may correspond to the device identification information and the event identification information of the failure occurrence report. Determining whether there is a plurality of the parts to be replaced in the third database; and, when there are a plurality of parts to be replaced, corresponding to the customer identification information and the apparatus identification information of the failure occurrence report. The plurality of component costs, the plurality of operation costs, and the plurality of occurrence probabilities of the third database corresponding to the movement costs of the first database, the device identification information and the event identification information of the failure occurrence notification. A process of calculating a second component replacement cost expected in replacement of the plurality of replacement target parts based on Based on the plurality of failure analysis times, the plurality of occurrence probabilities, and the plurality of analysis unit time costs of the third database corresponding to the device identification information and the event identification information of the harm occurrence report, the plurality of A process of calculating a third analysis cost expected in replacement of the replacement target component, and a method of replacing the plurality of selected replacement target components when the third analysis cost is equal to or greater than the second component replacement cost. And outputting, through the output unit, third work instruction information indicating that a failure determined to be able to minimize the total cost has occurred.

  In the work instruction device according to the first aspect, when the third analysis cost is smaller than the second component replacement cost, the control unit may output a fourth work instruction indicating that a failure that does not require replacement has occurred. A process of outputting information through the output unit is further performed.

  In the work instruction device according to the first aspect, the third database includes device identification information for identifying the device, event identification information for identifying a failure, and whether or not parts need to be replaced immediately to recover from the corresponding failure. A fourth database in which the necessity of replacement, the parts to be replaced, and the probability of occurrence of the corresponding parts to be replaced cause a failure, the apparatus identification information for identifying the apparatus, and the failure identification And a fifth database in which the event identification information to be replaced, the parts to be replaced, the parts cost and the operation cost are arranged in association with each other, the apparatus identification information for identifying the apparatus, the event identification information for identifying the failure, the parts to be replaced, the failure analysis time and the analysis unit. And a sixth database in which time costs are associated and arranged.

  In the work instruction device according to the first aspect, the control unit, when acquiring the failure occurrence report, calculates the customer identification information of the failure occurrence report and the device before calculating the first analysis cost. Processing for determining whether there is customer identification information, device identification information, and event identification information in the second database corresponding to identification information and the event identification information; and corresponding customer identification information, device identification in the second database. When there is information and event identification information, a process of updating the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report; If there is no customer identification information, device identification information and event identification information in the second database, the second database The customer identification information of broadcasting, the apparatus identification information and customer identification information corresponding to the event identification information, and add the device identification information and event identification information, and further performs a process of adding a report number, a.

  In the work instruction device according to the first aspect, the control unit may include, when the replacement is required, including a selected component to be replaced and indicating that a failure requiring replacement has occurred. A process of outputting the work instruction information through the output unit is further performed.

  In the present invention, a form of the work instruction system according to the second viewpoint is possible.

  In the present invention, a form of the work instruction method according to the third viewpoint is possible.

  In the present invention, the form of the program according to the fourth aspect is possible.

  The disclosure of the above patent documents is incorporated herein by reference. Within the framework of the entire disclosure of the present invention (including the claims and the drawings), modifications and adjustments of the embodiments and examples are possible based on the basic technical concept. In addition, various combinations or selections of various disclosed elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, and the like) within the frame of the entire disclosure of the present invention (necessary) Is unselected). That is, the present invention naturally includes various variations and modifications that can be made by those skilled in the art according to the entire disclosure including the claims and the drawings and the technical idea. Further, as for the numerical values and numerical ranges described in the present application, any intermediate value, lower numerical value, and small range are considered to be described even if not specified.

DESCRIPTION OF SYMBOLS 1 Work instruction system 10 Monitored device 20 Work instruction device 21 Communication unit 22 Control unit 23 Input unit 24 Output unit 25 Storage unit 26 Acquisition unit 30 Failure analysis program 31 Monitored device database (first database)
32 Report history database (second database)
33 Failure database (third database, fourth database)
34 Exchange work database (third database, fifth database)
35 Failure analysis database (third database, sixth database)
40 Network 51 First Database 52 Second Database 53 Third Database

Claims (10)

An acquisition unit for acquiring data;
An output unit for outputting data,
A storage unit for storing data,
A control unit that controls the acquisition unit, the output unit, and the storage unit, and performs predetermined information processing;
With
The storage unit,
A first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel cost are arranged in association with each other;
A second database in which customer identification information for identifying a customer, device identification information for identifying a device, event identification information for identifying a failure, and the number of reports associated with each other;
The device identification information for identifying the device, the event identification information for identifying the failure, the necessity of replacement indicating whether the component needs to be replaced immediately or not to recover from the corresponding failure, the replacement target component, and the corresponding replacement target component A third database in which the probability of occurrence of failures, parts costs, operation costs, failure analysis time, and analysis unit time costs are associated and arranged;
Remember
The control unit includes:
Through the acquisition unit, when a failure occurrence report including customer identification information, device identification information, and event identification information related to a monitored device is acquired, the failure correspondence report corresponds to the device identification information and the event identification information. Selecting the replacement target part corresponding to the highest occurrence probability among the occurrence probabilities in the third database;
A process of determining whether or not replacement is unnecessary by referring to the need for replacement of the third database corresponding to the device identification information and the event identification information of the failure occurrence notification;
When the exchange is unnecessary, the travel cost of the first database corresponding to the customer identification information and the device identification information of the failure occurrence report, and the device identification information and the event identification information of the failure occurrence report And calculating a first component replacement cost expected in the replacement of the selected replacement target component based on the component cost and the operation cost of the third database corresponding to the selected replacement target component. Processing,
When the exchange is unnecessary, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report, and the device identification information of the failure occurrence report And the event identification information, and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component, based on the failure analysis time and the analysis unit time cost. (1) a process of calculating an analysis cost;
When the first analysis cost is equal to or greater than the first component replacement cost, a second fault including the selected replacement target component, which indicates that a replacement has been determined to minimize the total cost, has occurred. A process of outputting the first work instruction information through the output unit;
I do,
Work instruction device. The control unit includes:
When the first analysis cost is smaller than the first component replacement cost, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report; The device identification information and the event identification information of the failure occurrence report, and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component, and a predetermined period set in advance. Calculating a second analysis cost by adding the total of the analysis costs expected to be incurred in a predetermined period in the future to the first analysis cost based on the first analysis cost;
When the second analysis cost is equal to or greater than the first component replacement cost, the second analysis cost includes the selected replacement target component, and indicates that a failure has occurred in which replacement has been determined to minimize the total cost. Outputting the work instruction information of item 2 through the output unit;
Do more,
The work instruction device according to claim 1. The control unit includes:
When the second analysis cost is smaller than the first component replacement cost, it is determined whether there is a plurality of the replacement target components in the third database corresponding to the device identification information and the event identification information of the failure occurrence report. Determining processing;
When there are a plurality of parts to be replaced, the transfer cost of the first database corresponding to the customer identification information and the device identification information of the failure occurrence report, and the device identification information and the event identification of the failure occurrence report Based on the plurality of component costs, the plurality of operation costs, and the plurality of occurrence probabilities of the third database corresponding to information, a second component replacement cost expected in replacement of the plurality of replacement target components is calculated. Processing to calculate,
When there are a plurality of parts to be replaced, a plurality of the failure analysis times of the third database corresponding to the device identification information and the event identification information of the failure occurrence report, a plurality of the occurrence probabilities, and a plurality of the A process of calculating a third analysis cost expected in replacing the plurality of replacement target parts based on the analysis unit time cost;
When the third analysis cost is equal to or greater than the second component replacement cost, it indicates that a failure has occurred including the selected plurality of replacement target components, and it has been determined that replacement can minimize the total cost. A process of outputting third work instruction information through the output unit;
Do more,
The work instruction device according to claim 2. When the third analysis cost is smaller than the second component replacement cost, the control unit further performs a process of outputting, via the output unit, fourth work instruction information indicating that a failure that does not require replacement has occurred. ,
The work instruction device according to claim 3. The third database,
Device identification information for identifying a device, event identification information for identifying a failure, necessity of replacement indicating whether replacement of components is necessary or unnecessary immediately to recover from the corresponding failure, replacement target component, and corresponding replacement target A fourth database in which parts are arranged in association with the probability of occurrence of the failure,
A fifth database in which the device identification information for identifying the device, the event identification information for identifying the failure, the parts to be replaced, the component costs and the operation costs are arranged in association with each other;
A sixth database in which the device identification information for identifying the device, the event identification information for identifying the failure, the parts to be replaced, the failure analysis time, and the analysis unit time cost are arranged in association with each other;
including,
The work instruction device according to any one of claims 1 to 4. The control unit includes:
When the failure occurrence report is obtained, before calculating the first analysis cost, the customer identification information of the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence notification. Processing for determining whether there is information, device identification information and event identification information;
When there is the corresponding customer identification information, device identification information, and event identification information of the second database, the second database of the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure notification is provided. Processing for updating the number of reports,
If there is no corresponding customer identification information, device identification information, and event identification information in the second database, the second database corresponds to the customer identification information, the device identification information, and the event identification information of the failure occurrence report. Processing to add customer identification information, device identification information and event identification information, and to add the number of reports;
Do more,
The work instruction device according to any one of claims 1 to 5. A process of outputting, through the output unit, fifth work instruction information indicating that a failure requiring replacement, including the selected replacement target component, has occurred when the replacement is required; Do more,
The work instruction device according to any one of claims 1 to 6. A work instruction device according to any one of claims 1 to 7,
Device to be monitored,
A network that communicably connects the work instruction device and the monitored device,
Comprising,
Work instruction system. A first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel cost are arranged in association with each other;
A second database in which customer identification information for identifying a customer, device identification information for identifying a device, event identification information for identifying a failure, and the number of reports associated with each other;
The device identification information for identifying the device, the event identification information for identifying the failure, the necessity of replacement indicating whether the component needs to be replaced immediately or not to recover from the corresponding failure, the replacement target component, and the corresponding replacement target component A third database in which the probability of occurrence of failures, parts costs, operation costs, failure analysis time, and analysis unit time costs are associated and arranged;
A work instruction method for instructing work using a device that stores
When a failure occurrence report including the customer identification information, the device identification information, and the event identification information of the monitored device is acquired, the occurrence probability of the third database corresponding to the device identification information and the event identification information of the failure occurrence notification Selecting a part to be replaced corresponding to the highest probability of occurrence,
A step of determining whether or not replacement is unnecessary by referring to the need for replacement of the third database corresponding to the device identification information and the event identification information of the failure occurrence notification;
When the exchange is unnecessary, the travel cost of the first database corresponding to the customer identification information and the device identification information of the failure occurrence report, and the device identification information and the event identification information of the failure occurrence report And calculating a first component replacement cost expected in the replacement of the selected replacement target component based on the component cost and the operation cost of the third database corresponding to the selected replacement target component. Steps to
When the exchange is unnecessary, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report, and the device identification information of the failure occurrence report And the event identification information, and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component, based on the failure analysis time and the analysis unit time cost. (1) calculating an analysis cost;
When the first analysis cost is equal to or greater than the first component replacement cost, a second fault including the selected replacement target component, which indicates that a replacement has been determined to minimize the total cost, has occurred. Outputting the first work instruction information;
including,
Work order method. A first database in which customer identification information for identifying a customer, device identification information for identifying a device, and travel cost are arranged in association with each other;
A second database in which customer identification information for identifying a customer, device identification information for identifying a device, event identification information for identifying a failure, and the number of reports associated with each other;
The device identification information for identifying the device, the event identification information for identifying the failure, the necessity of replacement indicating whether the component needs to be replaced immediately or not to recover from the corresponding failure, the replacement target component, and the corresponding replacement target component A third database in which the probability of occurrence of failures, parts costs, operation costs, failure analysis time, and analysis unit time costs are associated and arranged;
Is a program that causes a device that stores a program to execute a process of instructing a work,
When acquiring a failure occurrence report including the customer identification information, the device identification information, and the event identification information relating to the monitored device through the acquisition unit, the second information corresponding to the device identification information and the event identification information of the failure occurrence notification is acquired. Selecting the replacement target part corresponding to the highest occurrence probability among the occurrence probabilities of the three databases;
A process of determining whether or not replacement is unnecessary by referring to the need for replacement of the third database corresponding to the device identification information and the event identification information of the failure occurrence notification;
When the exchange is unnecessary, the travel cost of the first database corresponding to the customer identification information and the device identification information of the failure occurrence report, and the device identification information and the event identification information of the failure occurrence report And calculating a first component replacement cost expected in the replacement of the selected replacement target component based on the component cost and the operation cost of the third database corresponding to the selected replacement target component. Processing,
When the exchange is unnecessary, the number of reports in the second database corresponding to the customer identification information, the device identification information, and the event identification information of the failure occurrence report, and the device identification information of the failure occurrence report And the event identification information, and the failure analysis time and the analysis unit time cost of the third database corresponding to the selected replacement target component, based on the failure analysis time and the analysis unit time cost. (1) a process of calculating an analysis cost;
When the first analysis cost is equal to or greater than the first component replacement cost, a second fault including the selected replacement target component, which indicates that a replacement has been determined to minimize the total cost, has occurred. Processing for outputting the first work instruction information;
Run,
program.

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