CN113287126A

CN113287126A - Maintenance plan generating device, maintenance plan generating method, and maintenance plan generating program

Info

Publication number: CN113287126A
Application number: CN201980088333.5A
Authority: CN
Inventors: 福井孝太郎
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2021-08-20
Also published as: JP6827606B2; KR102399660B1; TWI764009B; JPWO2020148804A1; WO2020148804A1; KR20210092315A; TW202029108A

Abstract

A standard cycle determination unit (21) determines a standard cycle for realizing a maintenance operation of a maintenance level for the standard component. A special cycle specifying unit (22) specifies a special cycle for realizing a maintenance operation of a maintenance level for the special member. When the special cycle is shorter than the standard cycle, an extended cycle determination unit (23) determines an extended cycle for realizing maintenance work of a maintenance level when remote maintenance is introduced to the special component. A maintenance plan generating unit (24) generates a maintenance plan based on a standard cycle and any one of the special cycle and the extended cycle.

Description

Maintenance plan generating device, maintenance plan generating method, and maintenance plan generating program

Technical Field

The present invention relates to a technique for supporting generation of a maintenance plan for a product using a component with no use performance (use performance record).

Background

In general, a variation range of the life of each component is predicted at the time of product design, and a maintenance cycle is set so that the failure occurrence rate is not more than a certain level. The maintenance cycle refers to a cycle in which maintenance work such as inspection and component replacement is performed.

This method has an advantage that the theoretical failure probability can be kept to a certain degree or less only by a preliminary study. However, this method requires setting a much shorter maintenance period than the center of the life distribution. In particular, if the failure occurrence rate is desired to be close to 0, the maintenance cycle becomes very short, and the component cost and the replacement work cost become high.

The following methods are sometimes also utilized: by extracting environment information that affects the failure occurrence rate and setting a period corresponding to the environment information, the period is extended without increasing the failure occurrence rate.

This method is effective when the relationship between the environmental information and the failure occurrence rate is clear and the environmental information can be acquired with high accuracy. However, the effect is insufficient in the case where the relationship between the environmental information and the occurrence rate of the failure is unclear and in the case where the environmental information changes during the operation.

Among them, with the progress of remote monitoring technology and data analysis technology, a condition-based maintenance (condition-based maintenance) technology is attracting attention. The condition maintenance technology comprises the following technologies: the deterioration state of each component is grasped by remote monitoring, the failure occurrence time is predicted, and maintenance work is performed immediately before the failure occurs. If the accuracy of state grasping and the prediction accuracy are high, the maintenance cycle can be made substantially equal to the life of each member. By utilizing the on-demand maintenance technique, a maintenance cycle can be set in which a trouble can be avoided and the amount of work is reduced.

However, in order to predict the failure occurrence time in the visual repair technique, it is necessary to acquire a large amount of data on the situation at the time of occurrence of the target event and the process until the event occurs.

Patent document 1 describes a technique for generating a maintenance plan of a plant. Patent document 1 describes the following: the reliability of each component is calculated based on the failure rate and the time elapsed since the last inspection, and a maintenance plan is generated in which the reliability as a reference is always ensured for all the target components and the cost is minimized.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-

Disclosure of Invention

Technical problem to be solved by the invention

An elevator composed of only standard components is installed in a building or an apartment of a normal standard. On the other hand, in buildings having special designs, office buildings having high added values, and high-level accommodation facilities, elevators using special parts having special sizes or special designs may be installed. In addition, an elevator or the like configured using a special member for interlocking with an external system may be provided. Such special parts are designed and introduced in such a manner that safety can be sufficiently ensured in consideration of the fact that parts are replaced periodically. However, since the number of elevators used is small, it is difficult to grasp variations in the life and to apply the maintenance technique depending on the situation.

The maintenance work is performed for both the standard component and the special component. Therefore, when the cycle required for the maintenance work of the special member is shorter than the cycle required for the maintenance work of the standard member, the work amount increases due to the presence of the special member, such as performing the access only for the maintenance work of the special member. When the maintenance cost related to the amount of work is reflected in the maintenance price, the burden of maintenance service of the elevator having the special component becomes large.

The purpose of the present invention is to enable the maintenance plan of a product using a special component to be appropriately generated.

Means for solving the problems

A maintenance plan generating device according to the present invention includes:

a standard cycle determination unit that determines, as a standard cycle, a cycle in which a maintenance operation at a standard maintenance level is performed, for a standard component having a use performance equal to or higher than a standard, among components constituting a product;

a special cycle determination unit that determines, as a special cycle, a cycle in which a maintenance operation of the maintenance level is performed for a special component other than the standard component among the constituent components;

an extended cycle determination unit configured to determine, as an extended cycle, a cycle of a maintenance work for realizing the maintenance level when remote maintenance is introduced to the special member, when the special cycle determined by the special cycle determination unit is a cycle shorter than the standard cycle determined by the standard cycle determination unit; and

and a maintenance plan generating unit configured to generate a maintenance plan based on the standard cycle and any cycle of the special cycle and the extended cycle specified by the extended cycle specifying unit.

Effects of the invention

In the present invention, when the special cycle is a cycle shorter than the standard cycle, a cycle of the maintenance work for realizing the maintenance level when the remote maintenance is introduced to the special member is determined as the extended cycle. Then, a maintenance plan based on an arbitrary period of the special period and the extended period, and the standard period is generated. Thus, a maintenance plan for a product using a special member can be appropriately created.

Drawings

Fig. 1 is a configuration diagram of a maintenance plan generating device 10 according to embodiment 1.

Fig. 2 is a diagram showing an example of a special member in embodiment 1.

Fig. 3 is a diagram showing an example of a special member in embodiment 1.

Fig. 4 is a flowchart of the overall process of the maintenance plan generating apparatus 10 according to embodiment 1.

Fig. 5 is a diagram showing an example of remote maintenance according to embodiment 1.

Fig. 6 is a flowchart of the standard cycle determination processing in embodiment 1.

Fig. 7 is an explanatory diagram of a cycle of the maintenance work in embodiment 1.

Fig. 8 is a flowchart of the special cycle determination processing in embodiment 1.

Fig. 9 is a configuration diagram of a maintenance plan generating apparatus 10 according to modification 3.

Fig. 10 is a configuration diagram of the maintenance schedule generating apparatus 10 according to embodiment 2.

Fig. 11 is a flowchart of the overall process of the maintenance plan generating apparatus 10 according to embodiment 2.

Fig. 12 is a flowchart of the estimated charge calculation process according to embodiment 2.

Reference numerals

10: a maintenance plan generating device; 11: a processor; 12: a memory (memory); 13: a storage (storage); 14: a communication interface; 15: an electronic circuit; 21: a standard cycle determination section; 22: a special cycle determination section; 23: an extended period determining section; 24: a maintenance plan generating unit; 25: a rank determination unit; 26: a cost determination unit; 31: during the period; 32: during which time.

Detailed Description

Embodiment 1.

Description of the structure of Tuliuzhang

The configuration of a maintenance plan generating apparatus 10 according to embodiment 1 will be described with reference to fig. 1.

The maintenance plan generating apparatus 10 is a computer.

The maintenance plan generating device 10 includes a processor 11 as hardware, a memory 12, a storage 13, and a communication interface 14. The processor 11 is connected to other hardware via signal lines, and controls these other hardware.

The processor 11 is an Integrated Circuit (IC) that performs processing. Specifically, the Processor 11 is a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or a GPU (Graphics Processing Unit).

The memory 12 is a storage device that temporarily stores data. Specifically, the Memory 12 is an SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory).

The storage 13 is a storage device for storing data. Specifically, the storage 13 is an HDD (Hard Disk Drive). The storage 13 may be a removable recording medium such as an SD (registered trademark) memory card, a CF (compact flash), a NAND flash, a flexible Disk, an optical Disk, a compact Disk, a blu-ray (registered trademark) Disk, or a DVD (Digital Versatile Disk).

The communication interface 14 is an interface for communicating with an external device. Specifically, the communication Interface 14 is a port of Ethernet (registered trademark), USB (Universal Serial Bus), or HDMI (High-Definition Multimedia Interface).

The maintenance plan generating device 10 includes a standard cycle determining unit 21, a special cycle determining unit 22, an extended cycle determining unit 23, and a maintenance plan generating unit 24 as functional components. The functions of the functional components of the maintenance plan generating apparatus 10 are realized by software.

The memory 13 stores a program for realizing the functions of the functional components of the maintenance plan generating apparatus 10. The program is read into the memory 12 by the processor 11 and executed by the processor 11. This realizes the functions of the functional components of the maintenance plan generating apparatus 10.

In fig. 1, only 1 processor 11 is shown. However, the number of the processors 11 may be plural, and the plural processors 11 may cooperatively execute programs that realize the respective functions.

Description of the working of Twinia

The operation of the maintenance schedule generating apparatus 10 according to embodiment 1 will be described with reference to fig. 2 to 8.

The operation of the maintenance plan generating device 10 according to embodiment 1 corresponds to the maintenance plan generating method according to embodiment 1. The operation of the maintenance plan generating device 10 according to embodiment 1 corresponds to the processing of the maintenance plan generating program according to embodiment 1.

In embodiment 1, a description will be given using an elevator as a specific example of a product using a special member. However, the product using the special member is not limited to the elevator, and may be another product such as a escalator or a machine tool. However, as will be described later, the maintenance plan generating apparatus 10 according to embodiment 1 is effective particularly for products that are normally maintained from a remote location, such as an elevator, because it is possible to extend the cycle of maintenance work by introducing maintenance from a remote location.

Here, a member having a generally widely used performance equal to or higher than the performance standard is referred to as a standard member, and a member having a performance lower than the performance standard other than the standard member is referred to as a special member. In addition, a component having a similar component that differs only in color or size using actual results is also referred to herein as a standard component. Here, the use performance includes the performance of the inspection or adjustment work performed on the component, the performance of the abnormality management or the component replacement, and the information of the equipment state obtained by remote monitoring. The actual performance criterion is a value determined according to how accurately the on-demand maintenance is performed. That is, if the accuracy of the optional maintenance can be low, the performance criterion is a low value, and if the accuracy of the optional maintenance is required to be high, the performance criterion is a high value.

As special components there are components as shown in fig. 2 for connection to external systems such as security systems and components as shown in fig. 3 for special dimensions or special designs provided in the car.

The overall process of the maintenance plan generating apparatus 10 according to embodiment 1 will be described with reference to fig. 4.

(step S11: Standard period determination processing)

The standard cycle determination unit 21 determines a cycle of achieving a maintenance work at a maintenance level as a standard cycle for a standard component having a performance equal to or higher than a performance standard among components constituting an elevator as a product.

At this time, the standard cycle determination unit 21 determines the standard cycle by the visual maintenance using the past use result data on the standard component.

(step S12: Special period determination processing)

The special cycle specifying unit 22 specifies, as a special cycle, a cycle in which a maintenance operation of a reference maintenance level is realized for a special component other than a standard component among components constituting an elevator as a product.

In this case, the special cycle specifying unit 22 may specify the special cycle based on the result of the risk analysis, and may specify the special cycle when the cycle of the maintenance work is specified by the manufacturer of the special component or the like.

(step S13: period determination processing)

The extended period determination section 23 determines whether or not the special period determined in step S12 is a period shorter than the standard period determined in step S11.

In the case where the special cycle is a cycle shorter than the standard cycle, the extended cycle determination section 23 advances the process to step S14. On the other hand, when the special cycle is equal to or greater than the standard cycle, the extended cycle determination unit 23 advances the process to step S16.

(step S14: elongation determination processing)

When remote maintenance is introduced to the special component, the extended period determination unit 23 determines whether or not the period for achieving the maintenance level as a reference can be set to a period longer than the special period determined in step S12. The maintenance from a remote place includes: remote disconnection for disconnecting the special component from the operation of the product from the remote location in case of a defect in the special component; and remote monitoring, monitoring the operation of the particular component from a remote location. For example, as a remote maintenance for a connection member as a special member shown in fig. 2, it is conceivable to provide a communication device for network connection to a remote monitoring center between the connection member and a control panel of an elevator as shown in fig. 5. Fig. 5 shows a manner of implementing maintenance from a remote place by using a network of an existing remote monitoring center. However, the maintenance from a remote place may be realized by using a network such as LTE (Long Term Evolution) instead of the network of the existing remote monitoring center.

If the long cycle can be set, the extended cycle determination unit 23 advances the process to step S15. On the other hand, if the long cycle cannot be set, the extended cycle determination unit 23 advances the process to step S16.

(step S15: extended period determination processing)

The extended cycle determination unit 23 determines a cycle in which a maintenance level is realized as a reference when remote maintenance is introduced as an extended cycle.

(step S16: maintenance plan creation processing)

The maintenance plan generating unit 24 generates a maintenance plan based on any one of the special cycle determined in step S12 and the extended cycle determined in step S13, and the standard cycle determined in step S11.

Specifically, the maintenance plan generating unit 24 generates a maintenance plan using a short cycle of the standard cycle and the special cycle or the extended cycle. For example, when the standard cycle is two years, the special cycle, or the extended cycle is 1 year, the maintenance plan generating unit 24 generates a maintenance plan in which the cycle for performing the maintenance work is 1 year. In this case, the maintenance plan generator 24 may perform inspection for the standard components every year, but perform replacement every two years, and perform replacement for the special components every year. In addition, in the case where a plurality of standard components exist, the replacement cycle may be decided for each standard component. Similarly, in the case where there are a plurality of special parts, the replacement cycle may be decided for each special part. Here, the maintenance cycle may be set not for the entire elevator but for each work unit such as a work location where the efficiency of simultaneous work is high.

Referring to fig. 6, the standard cycle determination processing (step S11 in fig. 4) of embodiment 1 will be described.

(step S21: data Collection processing)

The standard cycle determination unit 21 collects the use performance data.

Specifically, the standard period determination unit 21 searches for the attributes of the site where the elevator as a product is installed, the model number of the standard component, and the like as keywords from the storage device in which the use record data is accumulated. The standard cycle determination unit 21 writes the retrieved use performance data in the memory 12.

(step S22: Life distribution determination processing)

The standard cycle determination unit 21 determines the life distribution of the standard component based on the usage performance data collected in step S21.

Specifically, the standard cycle determination unit 21 reads the use performance data from the memory 12. The standard cycle determination unit 21 determines the timing at which the standard component has failed based on the use performance data. The standard cycle determination unit 21 determines a distribution of time limits from the start of use of the standard component to the determined timing as a life distribution of the standard component. The standard cycle determination unit 21 writes the determined life span distribution in the memory 12.

(step S23: monitoring judgment processing)

The standard cycle determination unit 21 determines whether or not the effect of remote monitoring in which the operation of the standard component is monitored from a remote location exceeds the cost of remote monitoring.

When the effect of the remote monitoring is introduced exceeds the cost of introducing the remote monitoring, the standard cycle determination unit 21 advances the process to step S24. On the other hand, when the effect of the remote monitoring is introduced does not exceed the cost of introducing the remote monitoring, the standard cycle determination unit 21 advances the process to step S25.

The period of performing maintenance work may be extended by introducing remote monitoring. That is, by monitoring the state of the standard component by remote monitoring, if the precursor of a failure can be specified, the maintenance work can be extended for a certain period of time while there is no precursor of a failure. The effect of remote monitoring is introduced in the sense that the maintenance work cost of a certain reference period is reduced by extending the period for performing the maintenance work. That is, the determination as to whether or not the effect when the remote monitoring is introduced exceeds the cost for introducing the remote monitoring means the determination as to whether or not the cost for maintenance work, which is reduced when the remote monitoring is introduced, exceeds the cost for introducing the remote monitoring.

As a specific example, the cost for introducing remote monitoring and the extended period of the cycle of maintenance work are stored in the storage 13 for each device configuration of remote monitoring in advance. The standard cycle determination unit 21 reads the cost and the extension period from the memory 13 for each device configuration, and calculates the cost of the maintenance work that is reduced when the remote monitoring is introduced based on the extension period. Then, the standard cycle determination unit 21 determines whether or not the effect of the remote monitoring introduction exceeds the cost of the remote monitoring introduction for each device configuration.

In the case where the effect of the remote monitoring introduced in the plurality of device configurations exceeds the cost of the remote monitoring introduced, the standard cycle determination unit 21 determines to introduce the device configuration in which the difference between the effect of the remote monitoring introduced in the remote monitoring and the cost of the remote monitoring introduced is the largest.

(step S24: 1 st Standard period deciding processing)

The standard cycle determination unit 21 determines a cycle in which a maintenance operation of a maintenance level as a reference is performed when remote monitoring is introduced, as a standard cycle.

This will be described in detail with reference to fig. 7. Here, it is assumed that the failure occurrence rate is substantially 0 at the maintenance level as a reference. When the life distribution is determined as shown in fig. 7, a period 32 that is longer to some extent than a period 31 until the standard component starts to fail becomes a period for realizing a maintenance work of a standard maintenance level when remote monitoring is introduced. For example, when the term 31 is 1 year, the term 32 is 1 year and half. Further, even before the time limit 32 but after the time limit 31 has elapsed, a failure of the standard component may occur. The fault is identified by remote monitoring, and a maintenance operation is performed when the precursor occurs.

(step S25: 2 nd standard period decision processing)

The standard cycle determination unit 21 determines a cycle in which a maintenance operation of a maintenance level as a reference is performed without introducing remote monitoring as a standard cycle.

This will be described in detail with reference to fig. 7. When the life distribution is determined as shown in fig. 7, the time limit 31 until the standard component starts to fail is a cycle of maintenance work for realizing a standard maintenance level when remote monitoring is introduced. Accordingly, the occurrence rate of the failure of the standard component can be suppressed to substantially 0.

(step S26: Standard cost determination processing)

The standard cycle determination unit 21 determines a maintenance cost of a reference period amount when performing a maintenance operation in accordance with a standard cycle. The reference term is, for example, a 10-year term. Specifically, the cost for 1 maintenance operation for the standard component is stored in the memory 13 in advance. The standard cycle determination unit 21 divides the standard period by the standard cycle, and calculates the number of maintenance operations in the standard period. Then, the standard cycle determination unit 21 multiplies the number of maintenance operations by the cost of 1 maintenance operation, and determines the maintenance cost of the reference term amount.

When the standard cycle is determined in step S24, the standard cycle determination unit 21 determines the fee for introducing the remote monitoring. As a specific example, the storage 13 stores the introduction fee of the device for remotely monitoring the standard component for each building type. The standard cycle determination section 21 reads an import fee corresponding to the category of the building into which the elevator as a product is imported from the storage 13, thereby determining a fee for importing remote monitoring.

When the standard cycle is determined in step S24, the standard cycle determination unit 21 determines the sum of the maintenance cost and the cost for introducing the remote monitoring as the cost for the standard component. When the standard cycle is determined in step S25, the standard cycle determination unit 21 regards the maintenance cost as the cost for the standard component.

In addition, when there are a plurality of standard components, the standard cycle determination unit 21 determines the life distribution for each standard component in step S22. Then, in step S24 and step S25, the standard cycle determination unit 21 determines the cycle of the maintenance work for each standard component, which achieves the standard maintenance level, and determines the shortest cycle as the standard cycle.

In this case, the cost of 1 maintenance work is stored in advance for each standard component in the stocker 13. Then, in step S26, the standard cycle determination unit 21 determines the maintenance cost of the reference lifetime amount for all the standard components by summing up the maintenance costs of the reference lifetime amounts for each standard component.

Referring to fig. 8, the processing from the special cycle determination processing (step S12 in fig. 4) to the extended cycle determination processing (step S15 in fig. 4) in embodiment 1 will be described.

In fig. 8, the processes of step S31 to step S33 and step S39 correspond to the process of step S12 of fig. 4. The process of step S34 corresponds to the process of step S13 in fig. 4. The processing of steps S35 and S36 corresponds to the processing of step S14 in fig. 4. In addition, the processes of step S37 to step S38 and step S40 correspond to the process of step S15 of fig. 4.

(step S31: influence determination processing)

The special cycle determination unit 22 determines whether or not the operation of the elevator as a product is affected when the special component fails.

Specifically, the range of influence when a failure occurs in a particular component is stored in the memory 13 in advance. The special cycle determination unit 22 reads the influence range from the memory 13, and determines whether or not the influence is exerted on the operation of the elevator, based on whether or not the operation of the elevator is included in the influence range.

In the case where there is no influence on the operation of the elevator as a product, the special cycle determining section 22 advances the process to step S32. On the other hand, in the case where the operation of the elevator as a product is affected, the special cycle determination section 22 advances the process to step S33.

(step S32: 1 st Special period determination processing)

The special cycle specifying unit 22 specifies the standard cycle specified in step S11 as a special cycle that is a cycle for realizing the maintenance work of the reference maintenance level for the special member.

That is, if the operation of the elevator as a product is not affected, the maintenance work for the special component is not performed only for the special component, but is performed together with the maintenance work for the standard component.

(step S33: 2 nd special period determination processing)

The special cycle determination unit 22 determines a special cycle based on the result of the risk analysis. Alternatively, when the period of the maintenance work is defined by the manufacturer of the special member or the like, the special period determination unit 22 determines the period as the special period.

When the special cycle is determined based on the result of the risk Analysis, the special cycle determining unit 22 determines the risk of the failure of the special component by analyzing the failure mode of the special component by, for example, FTA (Fault Tree Analysis). The risk of failure indicates the degree and frequency of the effect of the failure. Then, the special cycle determination unit 22 determines a cycle corresponding to the risk of failure as a special cycle. For example, the storage 13 stores in advance how long a cycle is set according to the risk of failure, and the special cycle specifying unit 22 specifies a special cycle by reading a cycle corresponding to the risk of failure from the storage 13.

(step S34: period determination processing)

The extended period determination section 23 determines whether or not the special period determined in step S33 is a period shorter than the standard period determined in step S11 of fig. 4.

In the case where the special cycle is a cycle shorter than the standard cycle, the extended cycle determination section 23 advances the process to step S35. On the other hand, when the special cycle is equal to or greater than the standard cycle, the extended cycle determination unit 23 advances the process to step S39.

(step S35: disconnection determination processing)

The extended period determination unit 23 determines whether or not the effect of the remote disconnection introduction exceeds the cost of the remote disconnection introduction.

When the effect of the remote disconnection being introduced exceeds the cost of the remote disconnection being introduced, the extended period determination unit 23 advances the process to step S37. On the other hand, when the effect of the remote disconnection being introduced does not exceed the cost of the remote disconnection being introduced, the extended period determination unit 23 advances the process to step S36.

By introducing a remote disconnection, the particular component that has failed can be disconnected from the operation of the elevator as a product. Since the special member does not affect the operation of the elevator any longer by disconnecting the special member from the operation of the elevator, the maintenance work of the special member may be delayed.

For example, sometimes the special component is a function of receiving an operation signal from an external system or a dedicated operation switch. In this case, even if the special member cannot be used, the operation of the elevator as a product is not affected. However, since the special part in which the malfunction occurs transmits an erroneous operation signal to the elevator, there is a possibility that the elevator performs an unexpected operation. Therefore, the special member cannot always be left alone in a failure, and therefore, it is necessary to immediately perform maintenance work. However, if the special member can be disconnected from the operation of the elevator, the elevator can be continuously used even if the maintenance work is not immediately performed. In this way, the maintenance work for the special member can be delayed by disconnecting the special member from the operation of the elevator.

The effect of remote disconnection is introduced in the meaning of the cost of maintenance work in the reference period reduced by extending the period of performing maintenance work. That is, the determination as to whether or not the effect when the remote disconnection is introduced exceeds the cost for introducing the remote disconnection means that the determination as to whether or not the cost for the maintenance work of the reference term, which is reduced when the remote disconnection is introduced, exceeds the cost for introducing the remote disconnection.

As a specific example, similarly to step S23 of fig. 6, the cost for introducing the remote disconnection and the extension period of the cycle of the maintenance work are stored in advance in the storage 13 for each remote disconnection device configuration. The extended period determination unit 23 reads the cost and the extended period from the memory 13 for each device configuration, and calculates the cost of the maintenance work that is reduced when the remote disconnection is introduced, based on the extended period. Then, the extended period determination unit 23 determines whether or not the effect of the remote disconnection introduction exceeds the cost of the remote disconnection introduction for each device configuration.

In the case where the effect of the remote disconnection introduced exceeds the cost of the remote disconnection introduced in the plurality of device configurations, the extended period determination unit 23 determines to introduce the device configuration in which the difference between the effect of the remote disconnection introduced and the cost of the remote disconnection introduced is the largest.

(step S36: monitoring judgment processing)

The extended period determination unit 23 determines whether or not the effect of remote monitoring in which the operation of the special component is monitored from the remote exceeds the cost of remote monitoring.

When the effect of the remote monitoring is introduced exceeds the cost of introducing the remote monitoring, the extended period determination unit 23 advances the process to step S38. On the other hand, when the effect of the remote monitoring is introduced does not exceed the cost of introducing the remote monitoring, the extended period determination unit 23 advances the process to step S39.

Even if remote monitoring is introduced here, the life distribution as shown in fig. 7 cannot be obtained for the special component. However, if the change in the state can be grasped by remote monitoring, the work cycle corresponding to the state can be extended.

(step S37: 1 st extended period determination processing)

The extended period determination unit 23 determines, as an extended period, a period in which a maintenance operation of a reference maintenance level is realized when the remote disconnection is introduced.

Specifically, the extended period specifying unit 23 specifies a period longer than the special period specified in step S33 to a certain extent as the extended period, based on the same consideration as in step S24 of fig. 6. Alternatively, in the same manner as in step S32, the extended cycle determination unit 23 determines the standard cycle determined in step S11 as an extended cycle that is a cycle in which the maintenance work of the reference maintenance level is performed for the special member.

(step S38: 2 nd extended period determining processing)

The extended period determination unit 23 determines, as an extended period, a period in which maintenance work of a standard maintenance level is performed when remote monitoring is introduced.

Specifically, the extended period specifying unit 23 specifies a period longer than the special period specified in step S33 to a certain extent as the extended period, based on the same consideration as in step S24 of fig. 6.

(step S39: Special expense determination processing)

The special cycle determination unit 22 determines a maintenance cost of a reference period limit amount when performing a maintenance operation in a special cycle. Specifically, the cost for 1 maintenance operation for the special component is stored in the storage 13 in advance. The special cycle determination unit 22 divides the reference time limit by the special cycle, and calculates the number of maintenance operations in the reference time limit. Then, the special cycle determining unit 22 multiplies the number of maintenance operations by the cost of 1 maintenance operation, and determines the maintenance cost of the reference term amount. The special cycle determination unit 22 determines the maintenance cost of the reference term amount as the cost for the special component.

(step S40: extension cost determination processing)

The extended period determination section 23 determines a fee for introducing remote disconnection or remote monitoring. As an example, the storage 13 stores the introduction fee of the device for remote disconnection or remote monitoring for each building category. The extended period determination section 23 reads an introduction fee corresponding to the type of building into which the elevator as a product is introduced from the storage 13, thereby determining a fee for introducing remote disconnection or remote monitoring.

Then, the extended period specifying unit 23 calculates the maintenance cost of the reference lifetime amount in the same manner as in step S39, and specifies the sum of the maintenance cost and the cost for introducing remote monitoring as the cost for the special component.

Effects of embodiment 1

As described above, when the special cycle is a cycle shorter than the standard cycle, the maintenance plan generating device 10 according to embodiment 1 determines the cycle of the maintenance work for realizing the maintenance level when the remote maintenance is introduced to the special component as the extended cycle. Then, the maintenance plan generating device 10 generates a maintenance plan based on any one of the special cycle and the extended cycle and the standard cycle. This enables a maintenance plan for a product using a special member to be appropriately created.

In particular, the maintenance plan generating apparatus 10 according to embodiment 1 considers an extended period when the remote disconnection is introduced. Therefore, depending on the characteristics of the special member, in the case where the disconnection from the operation of the product such as the elevator is possible, the cycle of the maintenance work can be sometimes extended to the same extent as the standard cycle.

Other structures of Twinia

< modification 1>

In embodiment 1, only the use performance data is collected in step S21 in fig. 6. However, it is possible to handle the case where there is use actual results data regarding the target standard component differently from the case where there is use actual results data regarding only similar components similar to the target standard component.

Specifically, when there is the use performance data on the target standard component, as described in embodiment 1, the use performance data is collected in step S21 of fig. 6, and the life distribution is calculated in step S22. In contrast, when only the use performance data of the similar component is present, the standard cycle determination unit 21 collects the use performance data of the similar component and the verification experiment data on the target standard component in step S21 of fig. 6. The proof test data is collected in order to more accurately determine the lifetime distribution by adding data as a basis. Then, in step S22 of fig. 6, the standard cycle determination unit 21 estimates the life distribution based on the use performance data and the verification experiment data of the similar component. At this time, the standard cycle determination section 21 determines the estimation accuracy based on the amount of data as a basis and the degree of similarity of similar components. The degree of similarity of the similar components can be determined by storing the similarity between the components in the storage 13 in advance. The standard cycle determination unit 21 corrects the lifetime distribution so as to shorten the lifetime based on the estimation accuracy. Specifically, the standard cycle determination unit 21 performs correction so that the lifetime becomes shorter as the estimation accuracy becomes lower.

< modification 2>

In the processing shown in fig. 8, as maintenance from a remote place, either remote disconnection or remote monitoring is introduced. However, in the case where the maintenance work can be delayed longer by introducing both the remote disconnection and the remote monitoring, both the remote disconnection and the remote monitoring may be introduced.

< modification 3>

Even if the elevator is installed at a time point when the elevator is used, the use performance is accumulated to be equal to or higher than the performance standard in the process of continuously using the elevator. Then, by periodically performing the processing shown in fig. 4, the standard component and the special component are again sorted at the point of time when the processing is performed, and sometimes the component that was previously regarded as the special component is regarded as the standard component. Accordingly, a more appropriate maintenance plan can be generated.

Further, depending on the component, the manufacturer of the component may be responsible for the quality. In this case, when data on the failure performance of the single body can be obtained from a manufacturer or the like, the single body can be regarded as a standard component rather than a special component even if the performance of the single body is smaller than the performance standard.

< modification 4>

In the case where the product is an elevator, the building owner may set a special component without involvement of the elevator manufacturing company and the company performing the maintenance work. In this case, although the component is usually excluded according to the maintenance contract, if the component is provided in a form in which the operation of the elevator is controlled by a signal from a special component, the component cannot be ignored from the viewpoint of the maintenance plan. In this case, the installed component is regarded as a special component with a high risk, and can be handled by generating a maintenance plan by the processing shown in fig. 4. The special cycle is set short for special parts where the risk is high.

< modification 5>

In embodiment 1, each functional component is realized by software. However, as modification 5, each functional component may be realized by hardware. Modification 5 is different from embodiment 1 in the following.

The configuration of the maintenance plan generating apparatus 10 according to modification 5 will be described with reference to fig. 9.

When each functional component is realized by hardware, the maintenance plan generating device 10 includes an electronic circuit 15 instead of the processor 11, the memory 12, and the storage 13. The electronic circuit 15 is a dedicated circuit for realizing the functions of the functional components, the memory 12, and the storage 13.

As the electronic Circuit 15, a single Circuit, a composite Circuit, a programmed processor, a parallel programmed processor, a logic IC, a Gate Array (GA), an Application Specific Integrated Circuit (ASIC), or a Field Programmable Gate Array (FPGA) is assumed.

Each functional component may be realized by 1 electronic circuit 15, or may be realized by dispersing each functional component in a plurality of electronic circuits 15.

< modification 6>

As modification 6, some of the functional components may be realized by hardware, and other functional components may be realized by software.

The processor 11, the memory 12, the storage 13 and the electronic circuitry 15 are referred to as processing circuitry. That is, the functions of the functional components are realized by the processing circuit.

Embodiment 2.

Embodiment 2 differs from embodiment 1 in the following respects: when the cost for executing the generated maintenance plan is higher than the reference cost, the maintenance level is lowered and the maintenance plan is generated again. In embodiment 2, the difference will be described, and the description of the same point will be omitted.

Description of the structure of Tuliuzhang

Referring to fig. 10, the configuration of a maintenance plan generating device 10 according to embodiment 2 will be described.

The maintenance plan generating apparatus 10 is different from the maintenance plan generating apparatus 10 shown in fig. 1 in that it includes a rank determining unit 25 and a fee determining unit 26 as functional components.

Description of the working of Twinia

The operation of the maintenance schedule generating apparatus 10 according to embodiment 2 will be described with reference to fig. 11 to 12.

The operation of the maintenance plan generating apparatus 10 according to embodiment 2 corresponds to the maintenance plan generating method according to embodiment 2. The operation of the maintenance plan generating device 10 according to embodiment 2 corresponds to the processing of the maintenance plan generating program according to embodiment 2.

The overall process of the maintenance plan generating apparatus 10 according to embodiment 2 will be described with reference to fig. 11.

The processing of steps S43 to S48 is the same as the processing of steps S11 to S16 of fig. 4.

(step S41: estimated charge calculation processing)

The rank determination unit 25 calculates an estimate of the maintenance cost required for the maintenance of the elevator based on information such as the profit status and importance of the building in which the elevator as a product is installed.

(step S42: maintenance level determination processing)

The rank determination unit 25 determines a reference maintenance rank based on the estimation of the maintenance cost calculated in step S41 and the intention of the building owner.

The intention of the building owner is, for example, to increase the maintenance level, to adopt an average maintenance level, and to suppress the maintenance cost. In the case of an intention to make the maintenance level high, the level determination unit 25 determines a maintenance level slightly higher than the maintenance level determined based on the estimation of the maintenance cost as a reference maintenance level. In addition, the rank determination unit 25 determines, as a reference maintenance rank, a maintenance rank that is slightly lower than a maintenance rank determined based on the estimation of the maintenance cost, in the case of an intention to suppress the maintenance cost. The maintenance level in this case is a content that does not affect the safety of the user, and is mainly targeted for the stop time, the riding comfort, and the like.

The maintenance level determined based on the estimation of the maintenance cost can be determined by storing the maintenance level corresponding to each maintenance cost in the storage 13 in advance.

(step S49: fee determination processing)

The fee determination unit 26 determines whether or not the fee for executing the maintenance plan generated in step S48 is higher than the reference fee. The reference charge is the sum of the estimated maintenance charge or the estimated maintenance charge calculated in step S41 and the correction amount subtracted or added.

When the cost for executing the maintenance plan is higher than the reference cost, the cost determination unit 26 advances the process to step S50. On the other hand, when the cost for implementing the maintenance plan is not higher than the reference cost, the cost determination unit 26 ends the process.

(step S50: maintenance grade reestimation processing)

The fee determination unit 26 sets a maintenance level lower than the current reference maintenance level as a new reference maintenance level. For example, the fee determination unit 26 sets a maintenance level that is one lower than the current reference maintenance level as a new reference maintenance level.

Then, the fee determination unit 26 proceeds to step S43 to generate the maintenance plan again.

The estimated charge calculation process (step S41 in fig. 11) in embodiment 2 will be described with reference to fig. 12.

(step S51: building determination processing)

The rank determination unit 25 switches the processing according to the type of the building in which the elevator as a product is installed. Specifically, the rank determination unit 25 inputs the type of the building, and switches the process according to the input type of the building.

Here, when the type of the building is any of the office building, the house, and the commercial facility, the rank determination unit 25 advances the process to step S52. If the type of building is accommodation facility, the rank determination unit 25 advances the process to step S53. If the type of building is any of the public facilities and the medical facilities, the rank determination unit 25 advances the process to step S54. If the type of building is a transportation facility, the rank determination unit 25 advances the process to step S55.

(step S52: 1 st value estimation processing)

The rank determination unit 25 specifies an annual rent per unit area corresponding to the location of the building. Specifically, the level determination unit 25 obtains the rental fee of the building site from an external server storing the annual rental fee per unit area for each site. The rank determination unit 25 determines the rental of the entire building calculated by multiplying the acquired rental by the size of the building as the annual output value of the building.

The size of the building may be the total building area of the building, or the building may be the building area of the area to be rented if the building area of the area to be rented is known.

(step S53: 2 nd value estimation processing)

The rank determination unit 25 acquires transaction information of the last 1 year of the building from the reservation system of the accommodation facility. The level determination unit 25 calculates the accommodation charge of the last 1 year of the building from the transaction information, and determines the accommodation charge of the last 1 year as the annual output value of the building.

(step S54: 3 rd value estimation processing)

The grade determination unit 25 calculates a loss per unit time when the elevator as a product stops. Specifically, the loss is stored in advance in the storage 13 for each possible event generated. For example, if a hospital is admitted to a critically ill patient, if all elevators are stopped, an emergency operation cannot be performed, which may affect the life of the patient. This is a significant penalty in the event such an event occurs. The rank determination unit 25 calculates the probability of occurrence of each event in a unit time from the risk analysis, and calculates the loss per unit time by summing the money amounts obtained by multiplying the probability by the loss for each event. Then, the rank determination unit 25 calculates the annual loss from the loss per unit time, and determines the annual loss as the annual output value of the building.

Further, instead of setting the annual loss as it is as the annual output value of the building, the annual loss may be multiplied by a certain correction coefficient as the annual output value of the building. For example, when there are a plurality of elevators and another elevator can be used instead, the loss can be corrected so as to be small.

(step S55: 4 th value estimation processing)

The rank determination unit 25 obtains the number of annual users and the average use amount from an external server that manages information of transportation facilities. The rank determination unit 25 determines the amount of money obtained by multiplying the average amount of money used by the number of annual users as the annual output value of the building.

(step S56: maintenance cost calculation processing)

The level determination unit 25 multiplies the annual value of the building specified in any of steps S52 to S55 by the reference ratio, and calculates the estimated amount of the cost for maintaining the elevator.

The reference duty ratio is a predetermined value. The reference occupancy is generally determined by, for example, examining how much the occupancy of the cost spent for maintenance of the elevator is relative to the annual value of the building.

Effects of mode for carrying out mode 2

As described above, when the cost for executing the generated maintenance plan is higher than the reference cost, the maintenance plan generating device 10 according to embodiment 2 lowers the maintenance level and generates the maintenance plan again. Accordingly, a maintenance plan of an appropriate amount can be generated.

Even when the maintenance plan is optimized for the specific component, the maintenance plan is not necessarily an appropriate amount of money compared to the budget of the building owner. When a maintenance plan of an inappropriate amount compared with the budget is submitted to the construction owner as it is, it is likely that contract signing will take time or change to another maintenance company. However, the maintenance plan generating apparatus 10 according to embodiment 2 can generate a maintenance plan of an appropriate amount of money, and therefore this can be prevented.

Other structures of Twinia

< modification 7>

Buildings sometimes have a reduced market value and reduced revenue over time. In this case, the estimate of maintenance costs also decreases. Then, the maintenance plan generating apparatus 10 may periodically execute the processing shown in fig. 11 to generate a maintenance plan again.

In this case, the maintenance plan generating unit 24 may include the maintenance cost for the standard component and the maintenance cost for the special component in the maintenance plan. The maintenance cost for the standard component is the cost calculated in step S26 of fig. 6. The maintenance cost for the special component is the cost calculated in step S39 or step S40 in fig. 8.

The maintenance plan generating unit 24 calculates a ratio of the maintenance cost for the special member to the total of the maintenance cost for the standard member and the maintenance cost for the special member. Then, the maintenance plan generating unit 24 may notify that the special component is turned off when the occupancy exceeds the threshold. That is, when the maintenance cost of the special member accounts for a high percentage of the total maintenance cost, it may be undesirable to continue using the special member from the viewpoint of maintaining the value of the elevator. Whereupon the special feature is notified to be disconnected.

Claims

1. A maintenance plan generating device includes:

a standard cycle determination unit that determines, as a standard cycle, a cycle in which a maintenance operation of a maintenance level as a reference is performed for a standard component having a performance equal to or higher than a performance standard, among components constituting a product;

2. The maintenance plan generating apparatus according to claim 1,

the standard cycle determination section determines the standard cycle based on an actual result of a failure in an actual result of use of the standard component.

3. A maintenance plan generating device according to claim 1 or 2,

the extended cycle determination unit determines the extended cycle when at least any one of remote disconnection for disconnecting the special component from the remote location from the operation of the product and remote monitoring for monitoring the operation of the special component from the remote location is introduced as the remote maintenance.

4. A maintenance plan generating apparatus according to any one of claims 1 to 3,

the maintenance plan generating unit generates the maintenance plan using the extended period instead of the special period when a total cost obtained by adding the introduction cost of the maintenance from the remote place to the maintenance cost of the reference period in the extended period is smaller than the maintenance cost of the reference period in the special period.

5. The maintenance plan generation device according to any one of claims 1 to 4,

the maintenance plan generating device further includes a cost determining unit configured to reduce the maintenance level and regenerate the maintenance plan when a cost for executing the maintenance plan generated by the maintenance plan generating unit is higher than a reference cost.

6. A maintenance plan generating device according to claim 5,

the reference cost is decided based on at least any value of the production value of the product and the loss caused by the stoppage of the product.

7. The maintenance plan generation device according to any one of claims 1 to 6,

the maintenance plan generating unit notifies that the special component is turned off when a ratio of the cost for the special component in the cost for executing the maintenance plan exceeds a threshold value.

8. The maintenance plan generation device according to any one of claims 1 to 7,

the standard cycle determining unit determines the standard cycle again by regarding the special component as a standard component when the performance of use of the special component is equal to or higher than a threshold value,

the maintenance plan generating unit generates a maintenance plan based on the newly determined standard cycle.

9. A maintenance plan generating method, wherein,

the standard cycle determining unit determines a cycle of realizing a maintenance operation of a maintenance level as a standard cycle for a standard component having a use performance equal to or higher than a performance standard among components constituting a product,

the special cycle specifying unit specifies a cycle of a maintenance work for realizing the maintenance level as a special cycle for a special component other than the standard component among the constituent components,

an extended cycle determination unit that determines, as an extended cycle, a cycle in which a maintenance operation of the maintenance level is performed when remote maintenance is introduced to the special member, when the special cycle is a cycle shorter than the standard cycle,

a maintenance plan generating unit generates a maintenance plan based on the standard cycle and any cycle of the special cycle and the extended cycle.

10. A maintenance plan generating program for causing a computer to function as a maintenance plan generating device for performing:

a standard cycle determination process in which a standard cycle determination unit determines, as a standard cycle, a cycle in which a maintenance operation is performed at a maintenance level as a reference, for a standard component having a use performance equal to or higher than a performance standard, among component components constituting a product;

a special cycle determination process in which a special cycle determination unit determines, as a special cycle, a cycle in which a maintenance operation of the maintenance level is performed for a special component other than the standard component among the constituent components;

an extended cycle determination process of determining, as an extended cycle, a cycle in which a maintenance operation of the maintenance level is performed when remote maintenance is introduced to the special member, when the special cycle determined by the special cycle determination process is a cycle shorter than the standard cycle determined by the standard cycle determination process; and

and a maintenance plan generating process in which a maintenance plan generating unit generates a maintenance plan based on the standard cycle and any cycle of the special cycle and the extended cycle specified by the extended cycle specifying process.