Maintenance plan creation assistance device, maintenance plan creation assistance method, and maintenance plan creation assistance program

Abstract

A maintenance plan creation assistance device (100) comprises a maintenance plan creation unit (120). In a maintenance plan, which indicates a scheduled maintenance period for each piece of equipment to be maintained by a maintenance person in charge, if the volume of maintenance work in a target period exceeds the capacity of the maintenance person for that target period, the maintenance plan creation unit (120) changes a portion of the maintenance work scheduled to be performed within a period that includes at least a portion of the target period, such that the portion of the maintenance work is performed in a period that does not overlap the target period, so that the volume of maintenance work in the target period does not exceed the capacity in the plan. When the administrator of a target piece of equipment is set as a target administrator and the scheduled maintenance period corresponding to the target piece of equipment indicated by the maintenance plan is set as a scheduled target period, if the target administrator does not approve the performance of the maintenance work on the target piece of equipment during the scheduled target period, the maintenance plan creation unit (120) changes, in the maintenance plan, the scheduled maintenance period corresponding to the target piece of equipment to a period approved by the target administrator for performing the maintenance work on the target piece of equipment.

Description

Maintenance plan creation support device, maintenance plan creation support method, and maintenance plan creation support program

[0001] The present disclosure relates to a maintenance plan creation support device, a maintenance plan creation support method, and a maintenance plan creation support program.

[0002] There is a technology that realizes relatively efficient maintenance work by creating a maintenance plan and an operation plan for equipment based on an abnormality detected in the equipment to be maintained. Patent Document 1 discloses a maintenance management system that is an example of this technology. In the technology disclosed in Patent Document 1, first, an equipment maintenance plan is created based on an "equipment operation plan" and a "detected abnormality." Next, if an abnormality is detected, the timing of a failure is predicted based on the "equipment operation plan," and a maintenance plan is created according to the predicted timing of the failure and the type of failure. Next, future operation plans are updated based on the created maintenance plan. Here, an example of the operation plan is the operating frequency. The operation plan is also called an operation schedule.

[0003] JP 2019-003440 A

[0004] In conventional maintenance management systems, an equipment operation plan is determined in advance, and the equipment owner and the maintenance company must share the operation plan. However, when the equipment stakeholders are not from the same organization, such as in the case of elevators or escalators, it is difficult to share the equipment operation plan and the availability of the equipment stakeholders. Each equipment stakeholder may be, for example, the equipment owner or a maintenance worker. Equipment stakeholders may also include users of the equipment. Furthermore, in conventional technology, even when a maintenance company maintains equipment for multiple different owners, the maintenance company's availability is not taken into consideration, which may result in the formulation of an infeasible maintenance plan. An example of an infeasible maintenance plan is a maintenance plan in which the amount of work indicated in the maintenance plan temporarily exceeds the maintenance company's available work capacity. The present disclosure aims to support the efficient creation of equipment maintenance plans that are acceptable to both owners and maintenance companies, even when the maintenance company maintains equipment for multiple different owners.

[0005] The maintenance plan creation support device according to the present disclosure comprises a maintenance plan creation unit that, when the amount of maintenance work during a target period in a maintenance plan that indicates a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment to be maintained and that is created based on a prediction of the timing of failures corresponding to each piece of equipment exceeds the maintenance technician's capacity for the target period, changes part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period in the maintenance plan to be performed in a period that does not overlap with the target period so that the amount of maintenance work during the target period does not exceed the capacity; and when each piece of equipment indicated in the maintenance plan is designated as target equipment, the manager of the target equipment is designated as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan is designated as the planned target period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment.

[0006] According to the present disclosure, when the maintenance work volume for a target period exceeds the maintenance worker's capacity for the target period, the maintenance plan creation unit changes, in the maintenance plan, some of the maintenance work scheduled to be performed within a period including at least a portion of the target period so that the maintenance work volume for the target period does not exceed the capacity. Furthermore, when the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the maintenance plan creation unit changes, in the maintenance plan, the planned maintenance period corresponding to the target equipment to a period during which the target manager agrees to perform maintenance work on the target equipment. Therefore, according to the present disclosure, even when a maintenance company maintains equipment for many different owners, it is possible to support the efficient creation of maintenance plans for equipment that are acceptable to both owners and maintenance companies.

[0007] FIG. 1 is a diagram showing an example of the configuration of a maintenance plan creation support device 100 according to a first embodiment. FIG. 2 is a diagram showing an example of the hardware configuration of the maintenance plan creation support device 100 according to the first embodiment. FIG. 3 is a flowchart showing the operation of the maintenance plan creation support device 100 according to the first embodiment. FIG. 4 is a diagram explaining the processing of a failure time prediction unit 110 according to the first embodiment, where (a) is a diagram explaining a failure rate and a scheduled maintenance date, and (b) is a diagram showing an example output of the failure time prediction unit 110. FIG. 5 is a diagram explaining the processing of a maintenance plan creation unit 120 and a maintenance plan adjustment unit 130 according to the first embodiment. FIG. 6 is a diagram explaining the processing of the maintenance plan creation unit 120 according to the first embodiment. FIG. 7 is a diagram explaining the processing of the maintenance plan creation unit 120 according to the first embodiment. FIG. 8 is a diagram showing an example of the hardware configuration of a maintenance plan creation support device 100 according to a modification of the first embodiment. FIG. 9 is a diagram showing an example of the configuration of a maintenance plan creation support device 100 according to a second embodiment. FIG. 10 is a flowchart showing the operation of the maintenance plan creation support device 100 according to the second embodiment. FIG. 11 is a diagram explaining the processing of a maintenance plan creation unit 220 according to the second embodiment.

[0008] In the description of the embodiments and the drawings, the same elements and corresponding elements are given the same reference numerals. The description of elements given the same reference numerals will be omitted or simplified as appropriate. Arrows in the drawings mainly indicate the flow of data or the flow of processing. Furthermore, "unit" may be read as "circuit," "step," "procedure," "process," or "circuitry" as appropriate.

[0009] Embodiment 1. This embodiment will be described in detail below with reference to the drawings. Here, the owner of each piece of equipment does not want to stop the equipment for maintenance work, for example, when the frequency of use of the equipment is relatively high. Furthermore, the owner of each piece of equipment does not want maintenance work to be performed on a day when it is difficult to accept maintenance work due to the absence of a person in charge, etc. On the other hand, the maintenance company wants to perform maintenance work on each piece of equipment before it breaks down, and wants to reduce the number of maintenance work operations as much as possible. Furthermore, the maintenance company wants to determine the date of maintenance work taking into account the maintenance work on equipment of other owners. A common problem for both the owner of each piece of equipment and the maintenance company is that it is time-consuming to adjust the date of maintenance work while taking into account various schedules. This embodiment is intended to solve this problem.

[0010] ***Description of Configuration*** Fig. 1 shows an example of the configuration of a maintenance plan creation support device 100 according to this embodiment. As shown in the figure, the maintenance plan creation support device 100 includes a failure time prediction unit 110, a maintenance plan creation unit 120, a maintenance plan adjustment unit 130, and a DB (database) group 190. The maintenance plan creation support device 100 supports the creation of plans for maintaining a large number of pieces of equipment.

[0011] The failure time prediction unit 110 predicts the failure time of each of a plurality of pieces of equipment based on the operation data of each piece of equipment, and determines a planned maintenance period for performing maintenance work on each piece of equipment based on the predicted failure time. Each piece of equipment corresponds to a maintenance target. As a specific example, the failure time prediction unit 110 predicts the failure time of each piece of equipment based on the signal data, specifications, maintenance history, etc. of each piece of equipment. Note that multiple pieces of equipment may exist at one site. Also, a single owner may own multiple pieces of equipment, and multiple pieces of equipment owned by a single owner may be collectively treated as a single piece of equipment. The planned maintenance period may indicate the date and time period for performing maintenance work. The planned maintenance date is a specific example of a planned maintenance period.

[0012] When the maintenance work volume for a target period in the maintenance plan exceeds the maintenance technician's capacity for the target period, the maintenance plan creation unit 120 changes some of the maintenance work scheduled to be performed within a period including at least a portion of the target period in the maintenance plan to be performed in a period that does not overlap with the target period, so that the maintenance work volume for the target period does not exceed the capacity. The maintenance plan is a plan indicating a planned maintenance period, which is a period during which a maintenance technician plans to perform maintenance work on each piece of equipment to be maintained, and is a plan created based on a prediction of the failure time corresponding to each piece of equipment. A specific example of the maintenance technician is a maintenance company. Furthermore, when each piece of equipment indicated in the maintenance plan is defined as a target equipment, the manager of the target equipment is defined as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan is defined as a target planned period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the maintenance plan creation unit 120 changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period. The agreed period is a period during which the target manager agrees to perform maintenance work on the target equipment. As a specific example, the manager of the target equipment is the owner of the target equipment or a person entrusted with managing the target equipment by the owner of the target equipment. When the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the maintenance plan creation unit 120 changes the planned maintenance period corresponding to the target equipment to the agreed period in the maintenance plan so that the amount of maintenance work during the agreed period does not exceed the maintenance staff's capacity for the agreed period. When the maintenance plan adjustment unit 130 determines to change the planned maintenance period corresponding to the target equipment, the maintenance plan creation unit 120 changes the planned maintenance period corresponding to the target equipment. When the amount of maintenance work during the target period in the maintenance plan exceeds the maintenance staff's capacity for the target period, the maintenance plan creation unit 120 calculates a priority corresponding to each piece of equipment for which maintenance work is scheduled to be performed during a period that includes at least a portion of the target period, and changes the planned maintenance period corresponding to each piece of equipment with a relatively low corresponding priority to a period that does not overlap with the target period.As a specific example, the maintenance plan creation unit 120 estimates the workload of the maintenance company for each piece of equipment based on the planned maintenance date for each piece of equipment determined by the failure time prediction unit 110, and adjusts the planned maintenance date for each piece of equipment based on the estimated workload. The maintenance plan creation unit 120 also readjusts the planned maintenance date in accordance with an instruction from the maintenance plan adjustment unit 130.

[0013] The maintenance plan adjustment unit 130 notifies the target manager of the planned target period and determines whether to change the planned maintenance period for the target equipment in the maintenance plan based on the target manager's response indicating whether the target manager agrees to perform maintenance work on the target equipment during the planned target period. If the target manager agrees to perform maintenance work on the target equipment during the planned target period, the maintenance plan adjustment unit 130 sets the period during which maintenance work on the target equipment is performed as the planned target period. As a specific example, the maintenance plan adjustment unit 130 calculates a priority for each piece of equipment based on the failure urgency and contract type corresponding to each piece of equipment, and notifies the owner of each piece of equipment of the planned maintenance date for each piece of equipment according to the calculated priority. Thereafter, the maintenance plan adjustment unit 130 causes the maintenance plan creation unit 120 to adjust the planned maintenance date as appropriate based on the response of the owner of each piece of equipment.

[0014] The DB group 190 is a database that stores maintenance history, signal data, maintenance work information, and equipment specifications. The maintenance history is data indicating the history of maintenance performed on each piece of equipment. The signal data is data indicating the signals of each device and the like equipped in the equipment. The maintenance work information is data indicating the work time for each maintenance content and the maintenance work capacity of the maintenance company. The equipment specifications are data indicating the specifications of each piece of equipment.

[0015] 2 shows an example of the hardware configuration of the maintenance plan creation support device 100 according to this embodiment. The maintenance plan creation support device 100 is composed of a computer. The maintenance plan creation support device 100 may be composed of multiple computers.

[0016] As shown in the figure, the maintenance plan creation support device 100 is a computer that includes hardware such as a processor 11, a memory 12, an auxiliary storage device 13, an input / output IF (Interface) 14, and a communication device 15. These pieces of hardware are appropriately connected via signal lines 19.

[0017] The processor 11 is an integrated circuit (IC) that performs arithmetic processing and controls the hardware of the computer. Specific examples of the processor 11 include a central processing unit (CPU), a digital signal processor (DSP), or a graphics processing unit (GPU). The maintenance plan creation support device 100 may include multiple processors that replace the processor 11. The multiple processors share the role of the processor 11.

[0018] The memory 12 is typically a volatile storage device, specifically a random access memory (RAM). The memory 12 is also called a primary storage device or a main memory. Data stored in the memory 12 is saved in the secondary storage device 13 as needed.

[0019] The auxiliary storage device 13 is typically a non-volatile storage device, and specific examples thereof include a ROM (Read Only Memory), an HDD (Hard Disk Drive), or a flash memory. Data stored in the auxiliary storage device 13 is loaded into the memory 12 as needed. The memory 12 and the auxiliary storage device 13 may be configured integrally.

[0020] The input / output IF 14 is a port to which an input device and an output device are connected. Specific examples of the input / output IF 14 include a USB (Universal Serial Bus) terminal. Specific examples of the input device include a keyboard and a mouse. Specific examples of the output device include a display.

[0021] The communication device 15 is a receiver and a transmitter, and is specifically a communication chip or a NIC (Network Interface Card).

[0022] Each unit of the maintenance plan creation support device 100 may use the input / output IF 14 and the communication device 15 as appropriate when communicating with other devices.

[0023] The auxiliary storage device 13 stores a maintenance plan creation support program. The maintenance plan creation support program is a program that causes a computer to realize the functions of each unit included in the maintenance plan creation support device 100. The maintenance plan creation support program is loaded into the memory 12 and executed by the processor 11. The functions of each unit included in the maintenance plan creation support device 100 are realized by software.

[0024] Data used when executing the maintenance plan creation support program and data obtained by executing the maintenance plan creation support program are stored in a storage device as appropriate. Each part of the maintenance plan creation support device 100 uses a storage device as appropriate. As a specific example, the storage device comprises at least one of the memory 12, the auxiliary storage device 13, a register in the processor 11, and a cache memory in the processor 11. Note that the terms "data" and "information" may have the same meaning. The storage device may be independent of the computer. The functions of the memory 12 and the auxiliary storage device 13 may be realized by other storage devices.

[0025] The maintenance plan creation support program may be recorded on a computer-readable nonvolatile recording medium. Specific examples of the nonvolatile recording medium include an optical disk and a flash memory. The maintenance plan creation support program may be provided as a program product.

[0026] ***Description of Operation*** The operation procedure of the maintenance plan creation support device 100 corresponds to a maintenance plan creation support method. Also, the program that realizes the operation of the maintenance plan creation support device 100 corresponds to a maintenance plan creation support program.

[0027] 3 is a flowchart showing an example of the operation of the maintenance plan creation support device 100. The operation of the maintenance plan creation support device 100 will be described with reference to FIG.

[0028] (Step S101) First, the failure time prediction unit 110 predicts the future time and type of failure for each piece of equipment using data such as signal data and specification information for each piece of equipment, as well as machine learning (artificial intelligence), statistical methods, or physical models. Next, the failure time prediction unit 110 determines a planned maintenance date for each piece of equipment based on the prediction results. As a specific example, as shown in (a) of FIG. 4, the failure time prediction unit 110 determines the timing immediately before the failure rate corresponding to each piece of equipment exceeds the quality threshold as the planned maintenance date for each piece of equipment. Also, (b) of FIG. 4 shows a specific example of the output of the failure time prediction unit 110. (b) of FIG. 4 shows, for each owner, the prediction results of the failure type by the failure time prediction unit 110, the prediction results of the failure time by the failure time prediction unit 110, and the planned maintenance date determined by the failure time prediction unit 110. The failure rate corresponding to each piece of equipment may have a probabilistic range; that is, the failure rate corresponding to each piece of equipment may be represented by a range rather than a curve. In this case, the timing at which the quality threshold is exceeded is a certain period of time, and whether or not the quality threshold is exceeded at each point within the certain period is determined probabilistically. The quality threshold may also vary depending on the type of equipment, the type of failure, the type of maintenance contract, etc. As a specific example, the quality threshold according to the type of maintenance contract is set relatively low when the maintenance contract provides maintenance with relatively high maintenance fees and relatively high quality, i.e., is set so that maintenance work is performed when the failure rate is relatively low. The quality threshold is set relatively high when the maintenance contract provides maintenance with relatively low maintenance fees and relatively low quality, i.e., is set so that maintenance work is performed when the failure rate is relatively high.

[0029] (Step S102) The maintenance plan creation unit 120 calculates the maintenance company's workload for each fixed period based on the scheduled maintenance dates and work details for all equipment. The work details include, for example, the number of workers and the work time. Note that some sites are easy to work on due to factors such as a large work space, while others are difficult to work on due to factors such as a small work space. Therefore, even when performing maintenance work on the same equipment, the actual workload may vary depending on the equipment's installation location and conditions. Therefore, even if the failure details are the same, the calculated workload for each owner's equipment may differ. If there is a period in which the calculated workload exceeds the maintenance company's capacity, the maintenance plan creation unit 120 appropriately adjusts the scheduled maintenance date for each equipment for which maintenance work is scheduled for each period in which the calculated workload exceeds the capacity. Note that the workload indicated in the maintenance plan may take into account the travel time of workers. The workload capacity of the same maintenance company may differ from period to period. Figure 5 illustrates an example of the processing performed by the maintenance plan creation unit 120. The maintenance plan creation unit 120 integrates the maintenance work schedules for all owners' equipment and checks whether the total amount of work to be done by the maintenance company for each date exceeds the maintenance company's work capacity. Here, in Figure 5, there is a period in which the amount of maintenance work exceeds the capacity. The maintenance plan creation unit 120 adjusts the planned maintenance date for each piece of equipment for which maintenance work is scheduled to be performed during that period so that the amount of maintenance work during that period does not exceed the capacity.

[0030] As a specific example, as shown in FIG. 6 , if the total work time on November 3rd, which is the target period, exceeds the allowable amount (10 hours in this example), the maintenance plan creation unit 120 first references the DB group 190 and links the maintenance work time and failure impact for each type of failure to the failure prediction result. The maintenance plan creation unit 120 also links information such as whether the owner of each piece of equipment is an important customer to the failure prediction result. The failure prediction result is a prediction result by the failure time prediction unit 110. In this example, the scheduled maintenance date is adjusted on a daily basis. The maintenance work amount is expressed in terms of work time. Maintenance work on a certain piece of equipment may be performed across multiple dates. Next, the maintenance plan creation unit 120 calculates a priority for each owner based on the information linked to the failure prediction result. In this case, the maintenance plan creation unit 120 may score each item or use other numerical methods. Specifically, the priority is determined based on the time until a failure occurs, the failure impact, the importance of the customer, and the cost of the maintenance work. Next, the maintenance plan creation unit 120 determines, based on the priority corresponding to each piece of equipment, which equipment will undergo maintenance work on November 3rd so that the total work time on November 3rd is within 10 hours. Furthermore, the maintenance plan creation unit 120 changes the planned maintenance date for each piece of equipment whose total work time exceeds 10 hours, i.e., for each piece of equipment with a relatively low priority among the pieces of equipment that were scheduled to undergo maintenance work on November 3rd, to another date. When changing the planned maintenance date, the maintenance plan creation unit 120 may change each planned maintenance date so that the amount of maintenance work does not exceed the allowable amount on the changed date. When changing the planned maintenance date, the maintenance plan creation unit 120 may not consider whether the amount of maintenance work on the changed date will exceed the allowable amount, and may appropriately change the planned maintenance date for each piece of equipment on the changed date if the amount of maintenance work on the changed date exceeds the allowable amount. Regarding the change of the planned maintenance date, the planned maintenance date is generally brought forward, but the planned maintenance date may also be postponed depending on the type of failure or the content of the maintenance work.

[0031] (Step S103) First, the maintenance plan adjustment unit 130 notifies the owners of each piece of equipment of the planned maintenance dates created by the maintenance plan creation unit 120 via a web system or the like. Each owner transmits a response indicating whether or not they accept the proposed planned maintenance date. The maintenance plan adjustment unit 130 may present multiple candidate planned maintenance dates to each owner, or may simultaneously notify each of the multiple owners of their corresponding planned maintenance dates. The owner's response may indicate a date and time that is convenient for the owner. Next, the maintenance plan adjustment unit 130 confirms the planned maintenance date for each piece of equipment or readjusts the planned maintenance date depending on the owner's response. If the maintenance plan adjustment unit 130 readjusts the planned maintenance date, it instructs the maintenance plan creation unit 120 to readjust the planned maintenance date. At this time, if the owner's response includes a date and time that is convenient for the owner, the maintenance plan adjustment unit 130 communicates that date and time to the maintenance plan creation unit 120. When the maintenance plan adjustment unit 130 readjusts a planned maintenance date for a certain piece of equipment, it performs the same processing as the processing performed in the first adjustment for that piece of equipment. The maintenance plan adjustment unit 130 determines the order of adjustment with each owner, i.e., the order of contacting each owner, based on the priority calculated by the maintenance plan creation unit 120, as a specific example. The maintenance plan adjustment unit 130 contacts owners in order of the equipment with a relatively high corresponding priority, and prioritizes determining the planned maintenance date for each piece of equipment for the owners with a relatively high corresponding priority. The order of adjustment may also be determined based on other factors such as importance.

[0032] ***Explanation of Effects of First Embodiment*** As described above, according to this embodiment, even if the operation schedule of each facility, the availability of each facility owner, and the availability of the maintenance company are not shared between the owner and the maintenance company of each facility, it is possible to create an effective and efficient maintenance plan that is easy for both the owner and the maintenance company to accept. Furthermore, according to this embodiment, it is possible to adjust the workload of the maintenance company, which leads to the implementation of maintenance work with ample time. Therefore, this embodiment contributes to improving maintenance quality.

[0033] ***Other Configurations*** <Modification 1> Fig. 7 shows an example of the hardware configuration of a maintenance plan creation support device 100 according to this modification. The maintenance plan creation support device 100 includes a processing circuit 18 instead of the processor 11, the processor 11 and memory 12, the processor 11 and auxiliary storage device 13, or the processor 11, memory 12, and auxiliary storage device 13. The processing circuit 18 is hardware that realizes at least a part of the components included in the maintenance plan creation support device 100. The processing circuit 18 may be dedicated hardware, or may be a processor that executes a program stored in the memory 12.

[0034] When the processing circuitry 18 is dedicated hardware, the processing circuitry 18 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. The maintenance plan creation support device 100 may be provided with multiple processing circuits that replace the processing circuitry 18. The multiple processing circuits share the role of the processing circuitry 18.

[0035] In the maintenance plan creation support device 100, some of the functions may be realized by dedicated hardware, and the remaining functions may be realized by software or firmware.

[0036] The processing circuitry 18 is realized by, for example, hardware, software, firmware, or a combination of these. The processor 11, memory 12, auxiliary storage device 13, and processing circuitry 18 are collectively referred to as "processing circuitry." In other words, the functions of the functional components of the maintenance plan creation support device 100 are realized by the processing circuitry. Maintenance plan creation support devices 100 according to other embodiments may also have a configuration similar to that of this modified example.

[0037] Second Embodiment The following mainly describes the differences from the above-described embodiment with reference to the drawings.

[0038] 8 shows an example of the configuration of a maintenance plan creation support device 200 according to this embodiment. Compared to the maintenance plan creation support device 100, the maintenance plan creation support device 200 includes a maintenance plan creation unit 220 instead of the maintenance plan creation unit 120, a DB group 290 instead of the DB group 190, and further includes an owner convenience analysis unit 210.

[0039] The owner availability analysis unit 210 estimates a period during which the target manager is likely to agree to maintenance work on the target equipment based on the track record of maintenance work on the target equipment. The owner availability analysis unit 210 may generate an acceptance index by estimating a period during which the target manager is likely to agree to maintenance work on the target equipment. The acceptance index is an index corresponding to the target manager and indicates the likelihood of agreeing to maintenance work on the target equipment for each period. As a specific example, the owner availability analysis unit 210 analyzes the usage amount of each piece of equipment based on operation history and camera footage, etc., and predicts future usage amount based on the analysis results. The operation history is, for example, a history indicating activation frequency and activation date and time. Furthermore, the owner availability analysis unit 210 refers to past maintenance history to analyze the date, time, day of the week, etc. on which each owner accepted maintenance work in the past. As a specific example, the owner availability analysis unit 210 calculates the percentage of each owner who has accepted maintenance work in the past for each day of the week or for each time period. Thereafter, the owner availability analysis unit 210 generates an owner availability prediction value for each owner by statistical analysis or the like, based on the predicted future usage of each piece of equipment and the analysis results of the maintenance history. The owner availability prediction value is an index that indicates the predicted results of the ease with which each owner will accept maintenance work. The owner availability prediction value may be an index that indicates the ratio of the number of times that maintenance work has been accepted to the total number of times that maintenance work has been accepted for each day of the week, or an index that indicates the ratio of the number of times that maintenance work has been accepted to the total number of times that maintenance work has been accepted for each time period, or an index that combines these.

[0040] The DB group 290 stores operation history and camera images in addition to the data stored in the DB group 190. The operation history is data indicating the operation history of each piece of equipment. The camera images are data indicating images captured of each piece of equipment.

[0041] The maintenance plan creation unit 220 has the function of creating a maintenance plan taking into account the owner convenience predicted value in addition to the functions of the maintenance plan creation unit 120 according to the first embodiment. Specifically, the maintenance plan creation unit 220 sets the planned maintenance period for the target equipment in the maintenance plan to a period within a period during which it is estimated that the target manager will be likely to agree to maintenance work on the target equipment. As a specific example, the maintenance plan creation unit 220 sets the period corresponding to a value in the acceptance index that is equal to or greater than the acceptance threshold as the period during which it is estimated that the target manager will be likely to agree to maintenance work on the target equipment. The acceptance threshold value may differ for each period. In this embodiment, the planned maintenance date for a certain equipment is selected from the dates and times when the owner convenience predicted value for the equipment is equal to or greater than the threshold. Therefore, according to this embodiment, it is possible to avoid in advance days on which the owner is likely to not want the equipment to be stopped.

[0042] ***Explanation of Operation*** Fig. 9 is a flowchart showing an example of the operation of the maintenance plan creation support device 200. The operation of the maintenance plan creation support device 200 will be described with reference to Fig. 9 .

[0043] (Step S201) The owner convenience analysis unit 210 analyzes the owner's convenience based on the operation history and camera images, and calculates the owner convenience predicted value for each period based on the analysis result.

[0044] (Step S202) The maintenance plan creation unit 220 adjusts the planned maintenance date for each piece of equipment if the owner's predicted value for the planned maintenance date indicated in the created maintenance plan is less than the acceptance threshold. Furthermore, the maintenance plan creation unit 220 takes into account the owner's predicted value for each piece of equipment when changing the planned maintenance date for each piece of equipment. Other processing is similar to step S102. FIG. 10 shows a specific example of processing for determining a planned maintenance date taking into account the owner's convenience predicted value. In this example, the owner's convenience predicted value for each date is calculated as the acceptance index. If the planned maintenance date is not determined taking into account the owner's convenience, the planned maintenance date may be a day on which the owner is unlikely to want the equipment to be shut down due to reasons such as high equipment usage (load). On the other hand, by determining the planned maintenance date taking into account the owner's convenience, i.e., by setting a day within a period in which the acceptance index is equal to or greater than the acceptance threshold, the planned maintenance date can be set within a period in which the failure rate is high and in which the owner is likely to accept maintenance (e.g., low equipment operation).

[0045] ***Explanation of Effects of Embodiment 2*** As described above, according to this embodiment, by creating and adjusting a maintenance plan taking into account the owner's convenience predicted value, even if the operation schedule of each facility and the owner's convenience are not shared between the owner and the maintenance company, it is possible to create a plan that is acceptable to both parties more relatively efficiently. Furthermore, according to this embodiment, even if the owner is not able to grasp the operating status of the facility, it is possible to create a relatively efficient maintenance plan.

[0046] ***Other Embodiments*** The above-described embodiments can be freely combined, or any of the components of each embodiment can be modified, or any of the components can be omitted from each embodiment. Furthermore, the embodiments are not limited to those shown in embodiments 1 and 2, and various modifications are possible as needed. The procedures described using flowcharts, etc., can be modified as appropriate.

[0047] 11 Processor, 12 Memory, 13 Auxiliary storage device, 14 Input / output IF, 15 Communication device, 18 Processing circuit, 19 Signal line, 100, 200 Maintenance plan creation support device, 110 Failure time prediction unit, 120, 220 Maintenance plan creation unit, 130 Maintenance plan adjustment unit, 190, 290 DB group, 210 Owner convenience analysis unit.

Claims

1. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation unit that, when each piece of equipment indicated in the maintenance plan is a target piece of equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period, changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period. Equipped with The maintenance plan creation unit is a maintenance plan creation support device that, if the target manager does not agree to perform maintenance work on the target equipment during the target planned period, changes the planned maintenance period corresponding to the target equipment to the agreed period in the maintenance plan so that the amount of maintenance work during the agreed period does not exceed the capacity of the maintenance staff during the agreed period.

2. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation unit that, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period, changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period; a maintenance plan adjustment unit that notifies the target manager of the planned target period and determines whether to change the planned maintenance period corresponding to the target equipment in the maintenance plan based on a response from the target manager indicating whether the target manager agrees to perform maintenance work on the target equipment during the planned target period; Equipped with The maintenance plan creation unit is a maintenance plan creation support device that changes the planned maintenance period corresponding to the target equipment when it is decided to change the planned maintenance period corresponding to the target equipment.

3. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation unit that, when each piece of equipment indicated in the maintenance plan is a target piece of equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period, changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period. Equipped with The maintenance plan creation unit is a maintenance plan creation support device that, when the amount of maintenance work during the target period in the maintenance plan exceeds the capacity of the maintenance staff during the target period, calculates a priority corresponding to each piece of equipment for which maintenance work is scheduled to be performed within a period that includes at least a part of the target period in the maintenance plan, and changes the planned maintenance period corresponding to each piece of equipment with a relatively low corresponding priority to a period that does not overlap with the target period.

4. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation unit that, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period, changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period; an owner availability analysis unit that estimates a period during which the target manager is likely to agree to maintenance work on the target equipment based on a track record of maintenance work on the target equipment; Equipped with The maintenance plan creation unit is a maintenance plan creation support device that sets the planned maintenance period corresponding to the target equipment in the maintenance plan to a period within a period during which it is estimated that the target manager will be likely to agree to maintenance work on the target equipment.

5. A maintenance plan creation support device as described in any one of claims 2 to 4, wherein, when the target manager does not agree to perform maintenance work on the target equipment during the target planned period, the maintenance plan creation unit changes the planned maintenance period corresponding to the target equipment to the agreed period in the maintenance plan so that the amount of maintenance work during the agreed period does not exceed the capacity of the maintenance person during the agreed period.

6. The maintenance plan creation support device further comprises: a maintenance plan adjustment unit that notifies the target manager of the planned target period and determines whether to change the planned maintenance period corresponding to the target equipment in the maintenance plan based on a response from the target manager indicating whether the target manager agrees to perform maintenance work on the target equipment during the planned target period. Equipped with The maintenance plan creation support device according to any one of claims 1, 3, and 4, wherein the maintenance plan creation unit changes the planned maintenance period corresponding to the target equipment when it is decided to change the planned maintenance period corresponding to the target equipment.

7. The maintenance plan creation support device according to claim 2, wherein the maintenance plan adjustment unit sets the period during which maintenance work on the target equipment is to be performed as the target planned period when the target manager agrees to perform maintenance work on the target equipment during the target planned period.

8. 5. The maintenance plan creation support device according to claim 1, wherein, when the amount of maintenance work during the target period in the maintenance plan exceeds the capacity of the maintenance worker during the target period, the maintenance plan creation unit calculates a priority corresponding to each piece of equipment for which maintenance work is scheduled to be performed during a period that includes at least a portion of the target period in the maintenance plan, and changes the planned maintenance period corresponding to each piece of equipment with a relatively low corresponding priority to a period that does not overlap with the target period.

9. The maintenance plan creation support device further comprises: an owner convenience analysis unit that estimates a period during which the target manager is likely to agree to maintenance work on the target equipment based on the performance of maintenance work on the target equipment; Equipped with 4. A maintenance plan creation support device according to claim 1, wherein the maintenance plan creation unit sets the planned maintenance period corresponding to the target equipment in the maintenance plan to a period within a period during which it is estimated that the target manager will be likely to agree to maintenance work on the target equipment.

10. the owner convenience analysis unit generates an acceptance index, which is an index corresponding to the target manager and indicates the likelihood of acceptance of maintenance work on the target equipment for each period, by estimating a period in which the target manager will be likely to accept maintenance work on the target equipment; The maintenance plan creation support device described in claim 4, wherein the maintenance plan creation unit determines a period corresponding to a value in the acceptance index that is equal to or greater than the acceptance threshold as a period during which the target manager is estimated to be more likely to accept maintenance work on the target equipment.

11. a computer changes a part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period to be performed in a period that does not overlap with the target period, in a maintenance plan that indicates a planned maintenance period during which a maintenance person is scheduled to perform maintenance work on each piece of equipment that needs to be maintained and that is a plan that is created based on a prediction of a failure time corresponding to each piece of equipment, in the case where the amount of maintenance work during a target period exceeds the capacity of the maintenance person during the target period, so that the amount of maintenance work during the target period does not exceed the capacity; When the computer designates each piece of equipment indicated in the maintenance plan as target equipment, the manager of the target equipment as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan as a planned target period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the computer changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment, A maintenance plan creation support method in which, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the computer changes the planned maintenance period corresponding to the target equipment to the agreed period in the maintenance plan so that the amount of maintenance work during the agreed period does not exceed the capacity of the maintenance staff during the agreed period.

12. a computer changes a part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period to be performed in a period that does not overlap with the target period, in a maintenance plan that indicates a planned maintenance period during which a maintenance person is scheduled to perform maintenance work on each piece of equipment that needs to be maintained and that is a plan that is created based on a prediction of a failure time corresponding to each piece of equipment, in the case where the amount of maintenance work during a target period exceeds the capacity of the maintenance person during the target period, so that the amount of maintenance work during the target period does not exceed the capacity; When the computer designates each piece of equipment indicated in the maintenance plan as target equipment, the manager of the target equipment as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan as a planned target period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the computer changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment, the computer notifies the target manager of the planned target period, and determines whether to change the planned maintenance period corresponding to the target equipment in the maintenance plan based on the target manager's response indicating whether or not the target manager agrees to perform maintenance work on the target equipment during the planned target period; A maintenance plan creation support method in which the computer changes a planned maintenance period corresponding to the target equipment when it is determined that the planned maintenance period corresponding to the target equipment should be changed.

13. a computer changes a part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period to be performed in a period that does not overlap with the target period, in a maintenance plan that indicates a planned maintenance period during which a maintenance person is scheduled to perform maintenance work on each piece of equipment that needs to be maintained and that is a plan that is created based on a prediction of a failure time corresponding to each piece of equipment, in the case where the amount of maintenance work during a target period exceeds the capacity of the maintenance person during the target period, so that the amount of maintenance work during the target period does not exceed the capacity; When the computer designates each piece of equipment indicated in the maintenance plan as target equipment, the manager of the target equipment as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan as a planned target period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the computer changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment, A maintenance plan creation support method in which, when the amount of maintenance work during the target period in the maintenance plan exceeds the capacity of the maintenance staff during the target period, the computer calculates a priority corresponding to each piece of equipment for which maintenance work is scheduled to be performed during a period that includes at least a portion of the target period in the maintenance plan, and changes the planned maintenance period for each piece of equipment with a relatively low corresponding priority to a period that does not overlap with the target period.

14. a computer changes a part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period to be performed in a period that does not overlap with the target period, in a maintenance plan that indicates a planned maintenance period during which a maintenance person is scheduled to perform maintenance work on each piece of equipment that needs to be maintained and that is a plan that is created based on a prediction of a failure time corresponding to each piece of equipment, in the case where the amount of maintenance work during a target period exceeds the capacity of the maintenance person during the target period, so that the amount of maintenance work during the target period does not exceed the capacity; When the computer designates each piece of equipment indicated in the maintenance plan as target equipment, the manager of the target equipment as a target manager, and the planned maintenance period corresponding to the target equipment indicated in the maintenance plan as a planned target period, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the computer changes the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment, the computer estimates a period in which the target manager is likely to agree to the maintenance work on the target equipment based on a track record of the maintenance work on the target equipment; A maintenance plan creation support method in which the computer sets the planned maintenance period corresponding to the target equipment in the maintenance plan to a period within a period during which the target manager is estimated to be likely to agree to maintenance work on the target equipment.

15. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, A maintenance plan creation process for changing the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned period, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period. A maintenance plan creation support program that causes a maintenance plan creation support device that is a computer to execute the above, In the maintenance plan creation process, if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, the maintenance plan creation support program changes the planned maintenance period corresponding to the target equipment to the agreed period in the maintenance plan so that the amount of maintenance work during the agreed period does not exceed the capacity of the maintenance staff during the agreed period.

16. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation process for changing the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period; a maintenance plan adjustment process of informing the target manager of the planned target period and determining whether to change the planned maintenance period corresponding to the target equipment in the maintenance plan based on the target manager's response indicating whether the target manager agrees to perform maintenance work on the target equipment during the planned target period; A maintenance plan creation support program that causes a maintenance plan creation support device that is a computer to execute the above, In the maintenance plan creation process, when it is determined that a planned maintenance period corresponding to the target equipment is to be changed, the maintenance plan creation support program changes the planned maintenance period corresponding to the target equipment.

17. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, A maintenance plan creation process for changing the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned period, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period. A maintenance plan creation support program that causes a maintenance plan creation support device that is a computer to execute the above, In the maintenance plan creation process, if the amount of maintenance work during the target period in the maintenance plan exceeds the capacity of the maintenance staff during the target period, a maintenance plan creation support program calculates a priority corresponding to each piece of equipment for which maintenance work is scheduled to be performed within a period that includes at least a portion of the target period in the maintenance plan, and changes the planned maintenance period corresponding to each piece of equipment with a relatively low corresponding priority to a period that does not overlap with the target period.

18. A maintenance plan is a plan showing a planned maintenance period during which a maintenance technician is scheduled to perform maintenance work on each piece of equipment that needs to be maintained, and is a plan created based on a prediction of the timing of a failure corresponding to each piece of equipment. When the amount of maintenance work during a target period in the maintenance plan exceeds the capacity of the maintenance technician during the target period, the maintenance plan modifies part of the maintenance work that is scheduled to be performed within a period that includes at least a part of the target period so that the amount of maintenance work during the target period does not exceed the capacity, a maintenance plan creation process for changing the planned maintenance period corresponding to the target equipment in the maintenance plan to an agreed period during which the target manager agrees to perform maintenance work on the target equipment if the target manager does not agree to perform maintenance work on the target equipment during the planned target period, when each piece of equipment indicated in the maintenance plan is a target equipment, a manager of the target equipment is a target manager, and a planned maintenance period corresponding to the target equipment indicated in the maintenance plan is a planned target period; an owner availability analysis process for estimating a period during which the target manager is likely to agree to maintenance work on the target equipment based on the performance of maintenance work on the target equipment; A maintenance plan creation support program that causes a maintenance plan creation support device that is a computer to execute the above, A maintenance plan creation support program in which, in the maintenance plan creation process, the planned maintenance period corresponding to the target equipment in the maintenance plan is set to a period within which it is estimated that the target manager will be likely to agree to maintenance work on the target equipment.