KR20200061413A - Maintenance plan system and maintenance plan method - Google Patents

Abstract

The management terminal 300 displays an adjustment screen including a risk graph representing a time series of risk values, an allowance mark indicating an allowable value, an expiration mark indicating an expiration date when the risk value reaches the allowable value, and a change interface for changing the allowable value do. The management terminal receives the designation allowance specified by the change interface. The maintenance plan apparatus 200 calculates a new due date based on the specified allowable value and the risk value time series, and determines a maintenance working day based on the new due date.

Description

Maintenance plan system and maintenance plan method

The present invention relates to a system for establishing a maintenance plan for a mechanical product involving remote monitoring.

In risk-based maintenance (RBM), the risk of anomalies and the probability of occurrence of each abnormality in each part of a plant, such as a plant, is determined, and the optimal maintenance plan is based on the risk calculated by the multiplication. It is planned.

Patent Literature 1 proposes a method for predicting the timing of breakage of equipment or deterioration of equipment in risk-based maintenance, and treating the predicted results as a cost to determine an appropriate repair time.

In some mechanical facilities such as elevators, remote monitoring for detecting occurrence of an abnormality is carried out based on information such as sensors in the aircraft.

Patent Document 2 proposes a technique for collecting information collected from various sensors in remote monitoring and calculating an occurrence time of an abnormality based on a change in the Mahalanobis distance.

Patent Document 1: Japanese Patent Publication No. 2003-303243 Patent Document 2: Japanese Patent Publication No. 2013-113775

In providing maintenance services to the owner of the device, downtime criteria apply. Specifically, a downtime criterion may be applied in the case of providing a maintenance service of a device in which operation is less frequently stopped even when sufficient maintenance quality is not secured, such as an elevator.

However, since the downtime standard does not adequately reflect the owner's request, it is difficult to streamline the maintenance plan while maintaining customer satisfaction.

It is an object of the present invention to make a maintenance plan according to the allowable risk specified by the manager (including the owner).

The maintenance plan system of the present invention,

A display unit for displaying an adjustment screen including a risk graph representing a time series of risk values, an allowance mark indicating an allowable value, a deadline mark indicating a due date when a risk value reaches the allowable value, and a change interface for changing the allowable value;

A reception unit accepting a designated allowance specified by the change interface;

An adjustment unit for calculating a new due date based on the specified allowable value and the risk value time series;

A planning unit is provided for determining a repair work day based on the new deadline.

According to the present invention, it is possible to make a maintenance plan according to the allowable risk specified by the manager (including the owner).

1 is a configuration diagram of the maintenance plan system 100 according to the first embodiment.
2 is a configuration diagram of the maintenance plan device 200 according to the first embodiment.
3 is a configuration diagram of the management terminal 300 according to the first embodiment.
4 is an explanatory diagram of the maintenance plan data 120 according to the first embodiment.
5 is a flowchart of the maintenance plan method according to the first embodiment.
6 is a diagram showing an adjustment screen 130 in the first embodiment.
7 is a diagram showing the movement of the adjustment screen 130 in the first embodiment.
8 is an explanatory diagram of a maintenance work day in the first embodiment.
9 is an explanatory diagram of a maintenance work day in the first embodiment.
10 is an explanatory diagram of a maintenance work day in the first embodiment.
11 is a configuration diagram of the maintenance plan device 200 according to the second embodiment.
12 is a flowchart of the maintenance plan method according to the second embodiment.
13 is a flowchart of the maintenance plan method according to the second embodiment.
14 is a diagram showing a restriction screen 140 according to the second embodiment.
15 is an explanatory diagram of a maintenance work day in the second embodiment.
16 is an explanatory diagram of a maintenance work day in the second embodiment.
17 is a configuration diagram of the maintenance plan device 200 according to the third embodiment.
18 is a configuration diagram of the maintenance plan device 200 according to the fourth embodiment.
19 is a flowchart of an event response method according to the fourth embodiment.
20 is a hardware configuration diagram of the maintenance plan device 200 according to the embodiment.
21 is a hardware configuration diagram of the management terminal 300 in the embodiment.

In the embodiments and drawings, the same reference numerals are assigned to the same elements and corresponding elements. Descriptions of the same reference numerals are omitted or simplified as appropriate. The arrows in the figure mainly indicate the flow of data or the flow of processing.

Embodiment 1.

The maintenance planning system 100 will be described based on FIGS. 1 to 10.

***Composition description***

Based on FIG. 1, the structure of the maintenance planning system 100 is demonstrated.

The maintenance plan system 100 is a system for establishing a maintenance plan for the monitoring target 110.

The maintenance plan system 100 includes a monitoring target 110, a maintenance plan device 200, and a management terminal 300.

The monitoring object 110, the maintenance planning device 200, and the management terminal 300 communicate with each other through the network 101.

The monitoring object 110 is a device that is monitored remotely and includes various sensors 111. For example, the monitoring object 110 is an elevator or an escalator.

The maintenance plan apparatus 200 plans a maintenance plan for the monitoring target 110.

The management terminal 300 is used to manage the maintenance plan.

Based on FIG. 2, the structure of the maintenance planning apparatus 200 is demonstrated.

The maintenance planning device 200 is a computer equipped with hardware such as a processor 201, a memory 202, an auxiliary storage device 203, and a communication device 204. These hardware are connected to each other via a signal line.

The processor 201 is an integrated circuit (IC) that performs arithmetic processing, and controls other hardware. For example, the processor 201 is a central processing unit (CPU), a digital signal processor (DSP), or a graphics processing unit (GPU).

The memory 202 is a volatile storage device. The memory 202 is also called main memory or main memory. For example, the memory 202 is random access memory (RAM). Data stored in the memory 202 is stored in the auxiliary storage device 203 as necessary.

The auxiliary storage device 203 is a nonvolatile storage device. For example, the auxiliary storage device 203 is a read only memory (ROM), a hard disk drive (HDD), or a flash memory. Data stored in the auxiliary storage device 203 is loaded into the memory 202 as necessary.

The communication device 204 is a receiver and a transmitter. For example, the communication device 204 is a communication chip or a network interface card (NIC).

The maintenance planning device 200 includes elements such as a screen portion 211, an adjustment portion 212, and a planning portion 213. These elements are realized in software.

In the auxiliary storage device 203, a maintenance plan program for functioning a computer as a screen unit 211, an adjustment unit 212, a planning unit 213, a storage unit 291, and a communication unit 292 is stored. The maintenance plan program is loaded into the memory 202 and executed by the processor 201.

In addition, an operating system (OS) is stored in the auxiliary storage device 203. At least a portion of the OS is loaded into the memory 202 and executed by the processor 201.

In other words, the processor 201 executes the OS while executing the maintenance plan program.

Data obtained by executing the maintenance plan program is stored in a memory 202, an auxiliary storage device 203, a register in the processor 201, or a storage device called a cache memory in the processor 201.

The memory 202 functions as a storage unit 291. However, another storage device may function as the storage unit 291 instead of the memory 202 or together with the memory 202.

The communication device 204 functions as a communication unit 292.

The maintenance planning device 200 may include a plurality of processors replacing the processor 201. The plurality of processors share the role of the processor 201.

The maintenance plan program can be recorded (storable) by a computer on a non-volatile recording medium such as an optical disk or flash memory.

Based on FIG. 3, the structure of the management terminal 300 is demonstrated.

The management terminal 300 is a computer equipped with hardware such as a processor 301, a memory 302, an auxiliary storage device 303, a communication device 304, and an input/output interface 305. These hardware are connected to each other via a signal line.

The processor 301 is an IC that performs arithmetic processing, and controls other hardware. For example, the processor 301 is a CPU, DSP, or GPU.

The memory 302 is a volatile storage device. The memory 302 is also called main memory or main memory. For example, the memory 302 is RAM. Data stored in the memory 302 is stored in the auxiliary storage device 303 as necessary.

The auxiliary storage device 303 is a nonvolatile storage device. For example, the auxiliary storage device 303 is a ROM, HDD or flash memory. Data stored in the auxiliary storage device 303 is loaded into the memory 302 as necessary.

The communication device 304 is a receiver and a transmitter. For example, the communication device 304 is a communication chip or NIC.

The input/output interface 305 is a port to which an input device and an output device are connected. For example, the input/output interface 305 is a USB terminal, the input device is a keyboard and a mouse, and the output device is a display. USB is an abbreviation for Universal Serial Bus.

The management terminal 300 includes a control unit 311 for controlling the storage unit 391, the communication unit 392, the display unit 393, and the reception unit 394. The control unit 311 is realized by software.

In the auxiliary storage device 303, a management program for functioning a computer as a control unit 311, a storage unit 391, a communication unit 392, a display unit 393, and a reception unit 394 is stored. The management program is loaded into the memory 302 and executed by the processor 301.

In addition, the OS is stored in the auxiliary storage device 303. At least a portion of the OS is loaded into the memory 302 and executed by the processor 301.

In other words, the processor 301 executes the OS while executing the management program.

Data obtained by executing the management program is stored in a memory 302, an auxiliary storage device 303, a register in the processor 301, or a storage device called a cache memory in the processor 301.

The memory 302 functions as a storage unit 391. However, another storage device may function as the storage unit 391 instead of the memory 302 or together with the memory 302.

The communication device 304 functions as a communication unit 392.

The input/output interface 305 functions as a display unit 393 and a reception unit 394.

The management terminal 300 may include a plurality of processors replacing the processor 301. The plurality of processors share the role of the processor 301.

The management program can be recorded (storable) by a computer on a non-volatile recording medium such as an optical disk or flash memory.

Based on Fig. 4, the maintenance plan data 120 will be described.

The maintenance plan data 120 represents the maintenance plan for the monitoring target 110.

Specifically, the maintenance plan data 120 indicates a visit schedule and a maintenance work schedule.

The visit schedule is a schedule of visits.

The visit is the day the worker visits the target facility.

The target facility is a facility having a monitoring target 110.

The broken triangle indicates regular visits.

The maintenance work schedule is a schedule of maintenance work days.

The maintenance work day is a day when the worker performs maintenance work on the monitoring target 110.

The solid triangle indicates the maintenance work day.

The maintenance work day is determined based on the time series of risk values of the monitoring target 110.

Specifically, a visit date before the day when the risk value (total) reaches the allowable value is determined as the maintenance work day.

The allowable value is a value determined as the maximum risk value allowed.

The risk value (total) is the sum of the individual risk values. For example, the risk value (total) is the sum of the risk value A and the risk value B.

The risk value A is the risk value of the failure risk A.

The risk value B is the risk value of the failure risk B.

The risk value is a value indicating the degree of failure risk. The higher the risk value, the higher the failure risk. Failure risks increase over time.

Each risk value time series and initial maintenance plan data 120 are obtained by a conventional method in risk-based maintenance (RBM).

For example, time series of each risk value and initial maintenance plan data 120 are obtained by the method disclosed in Patent Document 1.

***Explanation of operation***

The operation of the maintenance planning system 100 (especially the operation of the maintenance planning device 200) corresponds to the maintenance planning method. The procedure of the maintenance plan method corresponds to the procedure of the maintenance plan program.

Based on Fig. 5, the maintenance planning method will be described.

In the description of the remuneration planning method, the risk value means the risk value (total).

The initial maintenance plan data 120 is stored in the storage unit 291 of the maintenance plan device 200. In addition, the time series of risk values and the initial allowable values are stored in the storage unit 291 of the maintenance planning device 200.

In step S110, the display unit 393 displays the adjustment screen 130 on the display.

Based on Fig. 6, the adjustment screen 130 will be described.

The adjustment screen 130 has a risk graph 131, an allowance mark 132, an expiration mark 133, and a change interface 134.

The risk graph 131 represents a time series of risk values of the monitoring target 110.

Specifically, the risk graph 131 is a line graph showing a time series of risk values. The vertical axis represents risk values, and the horizontal axis represents time.

The solid line of the risk graph 131 represents a time series of performance values. The performance values are past risk values.

The dashed line portion of the risk graph 131 represents a predicted time series. The predicted value is a future risk value.

The tolerance mark 132 indicates an allowance value. Specifically, the allowable mark 132 is a straight line.

The deadline mark 133 indicates a due date. The deadline is the day when the risk value reaches an acceptable value. In other words, the deadline is a day corresponding to a risk value of the same value as the allowable value. Specifically, the deadline mark 133 is an arrow indicating a deadline date.

The change interface 134 is an interface for changing the allowable value.

Specifically, the change interface 134 is an up button and a down button. The up button is pressed to increase the tolerance, and the down button is pressed to lower the tolerance.

5, the procedure of step S110 will be described.

First, the screen unit 211 generates data of the adjustment screen 130.

Next, the communication unit 292 transmits data of the adjustment screen 130 to the management terminal 300.

Next, the communication unit 392 receives the data of the adjustment screen 130 from the maintenance planning device 200.

Then, the display portion 393 displays the adjustment screen 130 on the display using the data of the adjustment screen 130.

The procedure for generating the data of the adjustment screen 130 will be described.

First, the screen unit 211 calculates an initial due date based on a time series of risk values and an initial allowable value. The initial deadline date is a day corresponding to a risk value of the same value as the initial allowable value.

Next, the screen unit 211 generates a risk graph 131 based on the risk value time series, generates an allowable mark 132 based on the initial allowable value, and a deadline mark 133 based on the initial deadline date. Produces

Then, the screen unit 211 generates data of the adjustment screen 130.

In step S120, the acceptance unit 394 accepts the specified allowable value.

The specified allowable value is the allowable value specified by the change interface 134 of the adjustment screen 130.

The procedure of step S120 will be described.

First, the manager specifies the allowable value using the change interface 134 by operating the input device of the management terminal 300. Specifically, the administrator presses the up button or down button by operating the mouse.

Then, the reception unit 394 accepts the designated allowable value.

In step S130, the adjustment unit 212 calculates a new due date.

The new deadline date is a deadline corresponding to the specified allowable value.

The procedure of step S130 will be described.

First, the communication unit 392 transmits the designated allowable value to the maintenance planning device 200.

Next, the communication unit 292 receives the specified allowable value from the management terminal 300. Further, the storage unit 291 updates the stored allowable value with the designated allowable value.

Then, the adjustment unit 212 calculates a new due date based on the time series of the risk value and the specified allowable value. The new due date is the day when the risk value reaches the specified tolerance. In other words, the new deadline is a day corresponding to a risk value of the same value as the specified allowable value. Further, the storage unit 291 updates the memorized deadline with a new deadline date.

In step S140, the screen unit 211 updates the adjustment screen 130.

Specifically, the screen unit 211 moves the permission mark 132 of the adjustment screen 130 based on the specified allowable value, and moves the time limit mark 133 of the adjustment screen 130 based on the new deadline date. do.

The movement of the adjustment screen 130 will be described based on FIG. 7.

When the rising button, which is the change interface 134, is pressed, the allowable mark 132 moves upward, and the deadline mark 133 moves to the right.

In addition, when the down button of the change interface 134 is pressed, the allowable mark 132 moves downward, and the deadline mark 133 moves to the left.

5, the procedure of step S140 is demonstrated.

First, the screen unit 211 generates a risk graph 131 based on a time series of risk values, generates an allowable mark 132 based on a specified allowable value, and generates a deadline mark 133 based on a new deadline date. To create.

Next, the screen unit 211 generates data after the adjustment screen 130 is updated.

Next, the communication unit 292 transmits data after the update of the adjustment screen 130 to the management terminal 300.

Next, the communication unit 392 receives data after the update of the adjustment screen 130 from the maintenance planning device 200.

Then, the display unit 393 displays the adjustment screen 130 on the display using the data after the adjustment screen 130 is updated.

In step S150, the planning unit 213 determines a maintenance work day based on the new deadline date.

Then, the planning unit 213 registers the maintenance work day in the maintenance planning data 120.

The procedure of step S150 will be described.

First, the planning unit 213 selects the next visit from the maintenance plan data 120.

Next, the planning unit 213 compares the next visit with the new due date.

When the next visit date is a day before the new deadline date, the planning unit 213 determines the date before the new deadline date as a maintenance work day. Specifically, the planning unit 213 selects a visit date immediately before the new deadline date from the remuneration planning data 120. The selected date becomes the maintenance work day. Then, the planning unit 213 registers the maintenance work day in the maintenance planning data 120.

When the next visit is a day after the new deadline, the planning unit 213 determines an additional visit before the new deadline as a maintenance work day. Specifically, the planning unit 213 selects any one day until the new due date. The day selected is the additional visit and maintenance work day. Then, the planning unit 213 registers additional visits in the maintenance plan data 120. In addition, the planning unit 213 registers the maintenance work day in the maintenance planning data 120.

Based on Figs. 8 to 10, the determination of the maintenance work day will be described.

Currently, it is the day after the 2nd visit, and the day before the 3rd visit. In other words, the next visit is the third visit.

8 to 10, three allowable values are shown. The first tolerance is the maximum tolerance, the second tolerance is the middle tolerance, and the third tolerance is the minimum tolerance.

In Fig. 8, it is assumed that the manager has designated the first allowable value.

In this case, the next visit (third visit) is the day before the due date, and the previous visit immediately before the due date is the fourth visit. Therefore, the planning unit 213 determines the fourth visit as the maintenance work day.

In Fig. 9, it is assumed that the manager has designated the second allowance.

In this case, the next visit (third visit) is the day before the due date, and the previous visit immediately before the due date is the third visit. Therefore, the planning unit 213 determines the third visit as the maintenance work day.

In Fig. 10, it is assumed that the administrator has designated the third allowance.

In this case, the next visit (third visit) is a day after the due date. Therefore, the planning unit 213 selects the day before the next visit as an additional visit, and determines the additional visit as a maintenance work day.

***Supplement of Embodiment 1***

A specific example of the object to be monitored 110 is a mechanical facility.

Mechanical equipment is composed of various parts, and the deterioration of each part proceeds depending on the number of uses or aging. Therefore, maintenance work (inspection, adjustment and replacement of parts, etc.) is performed regularly so that abnormalities such as service stoppage do not occur.

A specific example of mechanical equipment is an elevator.

Remote monitoring of elevators is being carried out. In the remote monitoring, sensor information obtained by the sensor 111 in the aircraft is concentrated in the center. When an abnormality is detected by remote monitoring, the maintenance worker dispatches to the field for repair.

A specific example of the monitoring object 110 or the facility having the monitoring object 110 is a plant.

In order to develop a reasonable maintenance plan for the plant, the risk is calculated by multiplying the impact frequency and frequency of occurrence for each of the above items. Then, risk-based maintenance (RBM) is implemented. In RBM, the payoff period and the details of payoffs are determined according to the risk. The influence degree shows the influence when an abnormality occurs. Specifically, the degree of influence is determined based on the effect on human life, financial loss, or the time required to cope. The frequency of occurrence indicates the possibility of occurrence of an abnormality. In the general RBM, the frequency of occurrence is determined based on the failure results of the model or the designer's knowledge.

In addition, with advances in analysis technology and simulation technology, a technique for predicting deterioration of a member due to use has been proposed. Even if simulation is difficult, in many cases, it is possible to predict the number of times of use or the time of use in which an abnormality occurs due to the endurance test.

Here, the frequency of occurrence of the failure increases with the deterioration of the component causing the failure. Therefore, if the estimation result obtained by the deterioration prediction technique is used, the frequency of occurrence of each failure at a specific timing can be estimated.

In addition, since the condition of the parts is improved when the repair work is performed, the frequency of occurrence of abnormalities related to the parts on which the repair work is performed decreases.

The influence of each abnormality does not change even when the deterioration situation changes. Therefore, by multiplying the frequency of occurrence and the degree of influence, the risk at a specific timing can be calculated.

Here, by setting the influence degree of the failure leading to the user's injury to a value significantly higher than that of the normal failure, the deterioration of important parts is more reflected in the risk.

The maintenance plan system 100 makes it possible for an administrator (including the owner of the monitoring target 110) to easily change the allowance value, which is the basis for carrying out the maintenance work. The risk value of the monitored object 110 is calculated using RBM.

First, at the time of installation of the monitoring target 110, an initial allowable value (the initial value of the allowable level) is determined. Then, deterioration prediction is performed using the results of the acceleration test or past failure performance data, and a risk value time series is calculated based on the prediction results, and the initial maintenance plan data 120 is generated based on the risk value time series. do.

If the worker visits the site at regular intervals, the repair work will be carried out at the regular visit immediately before the risk value exceeds the allowable value. In addition, a regular maintenance plan (initial maintenance plan) is established so that the risk value does not exceed the allowable value and the amount of work is minimized. At this time, conditions such as personnel planning and dependency of multiple operations at the base of maintenance work are considered.

After the operation of the monitoring object 110 is started, remote monitoring is performed using the sensor 111 provided in the monitoring object 110. Then, the deterioration situation of each component of the monitoring target 110 is grasped.

Here, data obtained from deterioration estimation and observed data exist, but measurement deviations exist in the observed data. Therefore, by combining these two types of data using a technique such as a Kalman filter, deterioration estimation with higher accuracy can be performed. For a region not to be remotely monitored, the condition may be estimated using the inspection result at the time of visit.

If the difference between the deterioration situation of all parts and the predicted deterioration situation at the time of installation is within a certain range, no modification of the maintenance plan is necessary. Therefore, operation continues as it is.

On the other hand, if the difference exceeds a certain range, the remuneration plan is revised.

As a modification of the first step, the timing and contents of regular maintenance are adjusted.

If the deterioration of the condition is faster than the prior prediction, the maintenance plan is changed to cope with a regular visit before one time. In addition, due to deterioration, when the risk value exceeds the allowable value immediately before the maintenance day, the schedule of the maintenance work can be adjusted in units of several days.

If the deterioration of the condition is slower than previously predicted, the maintenance plan may be changed to cope with a regular visit after one time.

In addition, by optimizing the maintenance plan based on the same constraints as when the initial maintenance plan was prepared, it is also possible to determine the details of the final regular maintenance.

If the increase in risk value cannot be included within the allowable range by the modification of the first step, the remuneration plan is changed to carry out irregular remuneration. In particular, when there is no room for time until the risk value reaches the allowable value, the maintenance plan is changed so that emergency dispatch is performed. In an emergency commute, the worker rushes to the site to perform repair work on the target site. On the other hand, if there is time, it is also possible to optimize the overall maintenance plan of the target aircraft on the premise of conducting a visit for the occasional maintenance before the periodic maintenance is performed. Thereby, it is possible to perform the repair work for the target site together with the repair work for the other parts.

In addition, when the work content at the time of the visit after the next time is adjusted, the maintenance plan data 120 is updated, and the state change is continuously monitored based on the updated data. By revising the repair plan at a time when it is determined that the repair plan cannot cope with risk, it is possible to always determine the optimal response policy based on the repair plan system 100.

Moreover, while operating this system, the accuracy of deterioration prediction improves. Therefore, the initial maintenance plan itself may be reviewed in a long-term cycle so that the effect of this improvement is reflected in the initial maintenance plan.

It is desirable to set the allowable value of risk according to the manager's request.

For example, in a luxury hotel, it is required to keep noise and vibration at extremely low levels. In addition, extremely short downtime is required in medical institutions.

In this case, by setting the allowance lower than usual, an optimal maintenance plan reflecting the request can be devised. However, even if the allowable value is adjusted in this way, it may not be possible to allow adjustment to a level at which a failure affecting the user's human body occurs.

The risk value is utilized not only when a maintenance service company creates a maintenance plan, but also as a real time disclosure to a manager, and is effectively utilized.

The maintenance plan system 100 includes a management terminal 300. The management terminal 300 may be provided in a center facility in which the maintenance planning system 100 is operated, or may be installed in a remote location connected by the network 101.

The manager can confirm that the maintenance service company is performing maintenance work appropriately while managing the risk of the aircraft by using the management terminal 300. In addition, the manager can change the allowance on the spot based on the result of the review of the appropriate allowance.

If the manager changes the allowance, the remuneration plan is recalculated using the current risk value forecast. If the risk value already exceeds the new allowance, or if it is predicted that the risk value will exceed the new allowance until the next regular visit, the remuneration planning system 100 plans irregular remuneration. This makes it possible to quickly respond to the manager's request.

***Effect of Embodiment 1***

Since the maintenance planning system 100 provides the adjustment screen 130 to the manager, the manager can appropriately adjust the allowance. As a result, the maintenance service desired by the manager is provided. Therefore, it is possible to improve customer satisfaction.

***Other configurations***

The maintenance plan system 100 (for example, the maintenance plan device 200) may include a generating unit that generates initial maintenance plan data 120. The generation unit predicts the future risk value time series based on the past risk value time series, and generates the maintenance plan data 120 based on the future risk value time series. For predicting the risk value and generating the maintenance plan data 120, a conventional method based on risk-based maintenance can be used.

Embodiment 2.

The manner in which the operation of the monitored object 110 is restricted instead of adding the visitor when the next visitor is later than the new deadline is mainly explained based on Figs. do.

***Composition description***

The configuration of the maintenance plan system 100 is the same as the configuration (see FIG. 1) in the first embodiment.

Based on FIG. 11, the structure of the maintenance planning apparatus 200 is demonstrated.

The maintenance plan apparatus 200 also includes a limiting unit 214 and a predicting unit 215.

The maintenance plan program also functions the computer as the limiting unit 214 and the predicting unit 215.

***Explanation of operation***

Based on Figs. 12 and 13, the maintenance plan method will be described.

In step S201 (see FIG. 12 ), the display unit 393 displays the restriction screen 140 on the display.

Based on Fig. 14, the restriction screen 140 will be described.

The restriction screen 140 has a restriction interface 141.

The restriction interface 141 is an interface for designating an operation restriction for the monitoring target 110. The restriction interface 141 includes an interface for designating recommended operation restrictions.

Specifically, the restriction interface 141 has checkboxes for each type of operation restriction.

12, the procedure of step S201 is demonstrated.

First, the screen unit 211 generates data of the limited screen 140.

Next, the communication unit 292 transmits data of the restriction screen 140 to the management terminal 300.

Next, the communication unit 392 receives the data of the restriction screen 140 from the maintenance planning device 200.

Then, the display portion 393 displays the restriction screen 140 on the display using the data of the restriction screen 140.

In step S202, the reception unit 394 accepts the specified operation limit.

The specified operation restriction is an operation restriction specified by the restriction interface 141 of the restriction screen 140.

The procedure of step S202 will be described.

First, the administrator designates an operation restriction by using the restriction interface 141 by operating the input device of the management terminal 300. Specifically, the administrator checks a check box of any one operation limit by operating the mouse.

Then, the reception unit 394 accepts the designated operation limitation.

In addition, the communication unit 392 transmits a notice of the specified operation restriction to the maintenance plan device 200.

Next, the communication unit 292 receives the notification of the specified operation restriction from the management terminal 300.

Then, the storage unit 291 stores the specified operation limit.

In step S211, the display portion 393 displays the adjustment screen 130 on the display.

Step S211 is the same as Step S110 (see FIG. 5) in the first embodiment.

In step S212, the reception unit 394 accepts the specified allowable value.

Step S212 is the same as step S120 (see FIG. 5) in the first embodiment.

In step S213, the adjustment unit 212 calculates a new due date.

Step S213 is the same as Step S130 (see FIG. 5) in the first embodiment.

In step S220, the limiter 214 selects the next visit from the maintenance plan data 120.

Then, the limiting unit 214 compares the next visit with the new due date.

When the next visit date is a day before the new deadline date, the processing proceeds to step S221 and step S222.

When the next visit is a day after the new deadline, the process proceeds to step S231 (see Fig. 13).

In step S221, the screen unit 211 updates the adjustment screen 130.

The update method is the same as step S140 in the first embodiment (see Fig. 5).

In step S222, the planning unit 213 determines a visit date before the new due date as a maintenance work day. Specifically, the planning unit 213 selects a visit date immediately before the new deadline date from the remuneration planning data 120. The selected date is the maintenance work day.

Then, the planning unit 213 registers the maintenance work day in the maintenance planning data 120.

In step S231 (see FIG. 13 ), the limiting unit 214 limits the operation of the monitoring target 110.

Specifically, the limiting unit 214 generates an operation command corresponding to the specified operation limit. Then, the communication unit 292 transmits the generated operation command to the monitoring target 110. The monitoring target 110 receives an operation command and operates according to the received operation command. Thereby, the operation of the monitoring target 110 is limited.

In step S232, the prediction unit 215 calculates a time series of risk values after the limit.

The risk value time series after restriction is a risk value time series after the operation of the monitoring target 110 is restricted.

Specifically, the prediction unit 215 calculates the future risk time series of the monitoring target 110 based on the operation after the limit of the monitoring target 110 and the past risk time series of the monitoring target 110.

For calculation of the time series of risk values, a conventional calculation method in risk-based maintenance can be used.

In step S233, the adjustment unit 212 calculates a due date after the limit.

The deadline after the limit is a deadline corresponding to the specified allowable value after the operation of the monitoring target 110 is restricted.

Specifically, the adjustment unit 212 calculates a due date after the limit based on the specified allowable value and the time series of risk values after the limit. The deadline after the limit is the day when the risk value reaches the specified allowance. In other words, the deadline after the limit is a day corresponding to a risk value of the same value as the specified allowable value. In addition, the storage unit 291 updates the memorized deadline with the limit date after the limit.

In step S234, the screen unit 211 updates the adjustment screen 130.

Specifically, the screen unit 211 moves the allowable mark 132 of the adjustment screen 130 based on the specified allowable value, and moves the deadline mark 133 of the adjustment screen 130 based on the deadline after the limit. Move.

The procedure of step S234 is the same as the procedure of step S140 (refer FIG. 5) in 1st Embodiment.

In step S235, the planning unit 213 determines a maintenance work day based on the deadline date after the limit.

Then, the planning unit 213 registers the maintenance work day in the maintenance planning data 120.

The procedure of step S235 is the same as the procedure of step S150 (refer FIG. 5) in 1st Embodiment.

Based on Figs. 15 and 16, the determination of the maintenance work day will be described.

Currently, it is the day after the 2nd visit, and the day before the 3rd visit. In other words, the next visit is the third visit.

In Fig. 15, the risk graph shows a time series of risk values before the operation of the monitoring target 110 is restricted.

The next visit (third visit) is a day after the due date. Therefore, the operation of the monitoring target 110 is limited.

In Fig. 16, the risk graph shows a time series of risk values after the operation of the monitoring target 110 is restricted. Since the operation of the monitoring target 110 is limited, an increase in the risk value is suppressed.

The next visit (third visit) is the day before the due date, and the previous visit immediately before the due date is the third visit. Therefore, the planning unit 213 determines the third visit as a maintenance work day.

***Replenishment of Embodiment 2***

When it is difficult to include an increase in the risk value below the allowable value only by correcting the work contents at the planned visit, instead of performing irregular maintenance, the operation of the monitoring target 110 is partially limited. Deterioration of most of the members proceeds depending on the number of times of use. Therefore, progress of deterioration can be suppressed by limiting the number of uses. The limiting unit 214 determines the level of the operation limit so that the risk value for the next visit is less than the allowable value. When the risk value cannot be suppressed only by the operation restriction, the planning unit 213 determines an additional visit date as a maintenance work day.

The contents of the operation restrictions are determined in advance and registered in the storage unit 291. The content of the operation restriction can be displayed on the display of the management terminal 300. In addition, the operation status of the operation restriction can be displayed on the display of the management terminal 300. Then, the administrator can change the content of the operation restriction on the restriction screen 140.

When the content of the operation limit is changed, the prediction unit 215 newly calculates a time series of risk values. When it is estimated that the risk value exceeds the allowable value, the planning unit 213 makes a maintenance plan so that irregular maintenance is performed, as in the case where the operation restriction is not performed.

The operation limitation may be applied to the entire apparatus or may be limited to a range directly related to the member whose degradation is progressing.

For example, when deterioration occurs in a specific landing door of an elevator, the number of times the elevator is used on the floor may be limited.

In addition, when deterioration related to the driving mechanism of the elevator occurs, the operation speed of the elevator car may be lowered, or the elevator car may be operated to limit the number of passengers by changing the setting of the garden detection unit.

In addition, when the deterioration of the door of the platform occurs, the operating speed or the starting acceleration of the door may be lowered when the door is opened and when the door is closed.

In addition, when deterioration occurs in a part of the hoistway, the speed of the elevator car may be lowered only when the elevator car passes through the deteriorated part.

The manager can select a recommended item (recommended motion restriction). The recommended items are items with a small influence, and are selected with reference to normal usage patterns.

A confirmation process may be provided before the selected operation limit is applied. In the confirmation process, the display unit 393 displays the risk value time series after the limit notified from the maintenance plan apparatus 200 and the result of the next maintenance work day on the display. After confirming the indication, the manager determines the operation restrictions to be applied. Then, after the operation limit to be applied is determined, the limiting unit 214 limits the operation of the monitoring target 110.

When the operation restriction is applied, the restriction unit 214 may notify the user of the monitoring target 110 of the contents of the applied operation restriction.

When the monitored object 110 is an elevator, a message may be displayed on a display in an elevator car, an email may be transmitted to a pre-registered email address, or a message may be displayed on an advertisement display installed around the door of the platform.

***Effect of Embodiment 2***

Even if the next visit date is later than the new deadline, any visit can be made as a maintenance work day without adding a visit date.

Embodiment 3.

An aspect in which the recommended operation restriction is proposed will be mainly explained based on FIG. 17 in terms of differences from the first and second embodiments.

***Composition description***

The configuration of the maintenance plan system 100 is the same as the configuration (see FIG. 1) in the first embodiment.

Based on FIG. 17, the structure of the maintenance planning apparatus 200 is demonstrated.

The maintenance planning device 200 also includes a recommendation unit 216.

The maintenance plan program also causes the computer to function as the recommendation unit 216.

***Explanation of operation***

The recommendation unit 216 determines a recommended operation limit in advance.

Specifically, the recommendation unit 216 determines the recommended operation limit based on the operation history of the monitoring target 110.

The operation history of the monitoring target 110 is data indicating the past operating status of the monitoring target 110 and is stored in advance in the storage unit 291.

When the administrator sets the allowable range of the operation limit, it is difficult to explicitly specify the allowable range.

Thus, the recommendation unit 216 determines the recommended operation limit based on the operation history of the monitoring target 110.

For example, when the monitoring target 110 is an elevator, the recommendation unit 216 finds the frequency of use for each time zone or for each floor. Then, the recommendation unit 216 selects a time zone or floor with little influence as a limit target, and determines the use limit or speed limit in the limit target as the recommended operation limit. The recommendation unit 216 selects a building having a similar use or number of floors to a building having an elevator to be monitored 110 based on building data indicating information of each building, and of limiting the operation of the elevator in the selected building. The recommended motion limit may be determined based on the data for evaluating the effect. In other words, the recommendation unit 216 may determine the recommended operation restriction based on the effect when the operation restriction was previously performed in a similar building.

***Effect of Embodiment 3***

Since the recommended operation limit is determined in the maintenance plan system 100, the administrator can appropriately limit the operation of the monitoring target 110 by selecting the recommended operation limit in the restriction screen 140.

Embodiment 4.

An aspect in which the maintenance plan is appropriately changed when an event such as a large-scale disaster occurs is mainly described based on Figs. 18 to 20, different from the first embodiment.

***Composition description***

The configuration of the maintenance plan system 100 is the same as the configuration (see FIG. 1) in the first embodiment.

Based on FIG. 18, the structure of the maintenance planning apparatus 200 is demonstrated.

The maintenance planning device 200 also includes an event unit 217.

The maintenance plan program also causes the computer to function as the event unit 217.

***Explanation of operation***

Based on Fig. 19, an event response method will be described.

The event response method is part of the maintenance plan method.

In step S410, the event unit 217 determines whether a specific event has occurred.

The specific event is an event requiring a change in the allowable value, that is, an event requiring a change in the maintenance plan. A specific specific event is a large-scale disaster.

The occurrence of a specific event is detected by a person or sensor.

When the occurrence of a specific event is detected, the occurrence notification is input to the maintenance planning device 200.

Then, when the occurrence notification is input to the maintenance plan apparatus 200, the event unit 217 determines that a specific event has occurred.

When a specific event occurs, the process proceeds to step S420.

If a specific event has not occurred, processing ends.

In step S420, the adjustment unit 212 calculates an event due date.

The event deadline is a deadline corresponding to the event allowance.

The event allowable value is an allowable value used when a specific event occurs.

Specifically, the setting range of the allowable value is stored in advance in the storage unit 291.

Then, the adjustment unit 212 selects an upper limit allowable value from the set range, and calculates an event deadline based on the upper limit allowable value and the time series of the risk value. The event deadline is the day when the risk value reaches the upper limit. In other words, the event due date is a day corresponding to a risk value of a value equal to the upper limit allowance. Further, the storage unit 291 updates the stored allowable value to the upper limit allowable value, and updates the stored deadline date to the event deadline date.

In step S430, the planning unit 213 determines a new maintenance work day based on the event deadline date.

Then, the planning unit 213 changes the maintenance work day registered in the maintenance plan data 120 to a new maintenance work day.

The procedure for determining the new maintenance work day is the same as the procedure for determining the maintenance work day in step S150 (see FIG. 5) of the first embodiment.

***Replenishment of Embodiment 4***

In the case of a large-scale disaster, it is expected that the number of personnel resources is insufficient because urgent operations such as recovery operations occur in large quantities.

On the other hand, the manager has a desire to use the equipment as much as possible even in the event of a large-scale disaster.

So, in the case of a large-scale disaster, the adjustment unit 212 automatically raises the allowable value. However, the adjustment unit 212 matches the allowable value after being pulled up to the upper limit of the allowable value that can be normally set. In other words, the tolerance is raised only when the tolerance is set low.

Thereby, increase in maintenance work can be suppressed, giving priority to emergency response.

It is specified in advance to the manager that the allowance is raised in an emergency. For example, the display portion 393 displays a notification screen indicating the application conditions and the variation range on the display.

Depending on the purpose of the monitoring target 110, priority repair work is required even in an emergency. For example, for an apparatus of a medical institution, priority repair work is required even in an emergency.

It is also possible to set such a monitoring object 110 not to increase the allowable value.

In addition, depending on the scale of the disaster, it may be set so that the increase in the allowable value varies. For example, a tolerance value corresponding to the disaster scale is selected from a table in which the disaster scale and the tolerance values are correlated with each other.

As described above, even in the case of an emergency service, it is possible to provide an appropriate service in a form according to the intention of the manager by management based on risk values and allowable values.

In addition, in the case of a large-scale disaster, a more appropriate service can be executed by limiting the operation of the monitoring target 110 according to the operation limit (event operation limit) applied when the disaster occurs.

Also, the display unit 393 may display a setting screen for designating an allowable value and an operation limit applied in an emergency on the display. Then, in the same way as when the allowable value and the operation limit are normally specified, in the setting screen, the administrator can designate the allowable value and the operation limit applied in an emergency.

***Other configurations***

The fourth embodiment may be implemented in combination with the second embodiment or the third embodiment. In other words, the maintenance planning device 200 may include a limiting unit 214, a prediction unit 215, and a recommendation unit 216.

***Replenishment of embodiment***

The maintenance planning device 200 uses the information of the deterioration states of a plurality of components constituting the device identified by remote monitoring to determine the frequency of occurrence of each failure mode. The maintenance planning system 100 calculates the risk values for each failure mode by multiplying the degree of influence of each failure mode by the degree of influence obtained from the effect at the time of occurrence of each failure mode, and acquires the sum of these risk values.

The maintenance planning device 200 compares the preset allowable risk value with the total risk of the current facility. Then, the maintenance plan apparatus 200 modifies the plan of the maintenance work for the facility at a stage where it is predicted to exceed the allowable risk value.

The management terminal 300 displays the performance value of the sum of risks and the predicted time series change with respect to the manager (including the owner of the facility). In the management terminal 300, it is possible for the administrator to manipulate the allowable risk value based on the displayed total risk.

The maintenance planning device 200 detects that the operation has been performed, and corrects the maintenance work plan.

Basically, maintenance work is planned and carried out on the basis of a preset allowance. However, it is possible for the manager to provide the maintenance service at a level required by the manager by changing the allowance according to the situation.

The maintenance planning device 200 has a model of the progress of deterioration accompanying the passage of time or the number of times of use of the element obtained by the acceleration test.

The maintenance plan apparatus 200 uses the result of estimating the deterioration state of the parts by using both the output of the deterioration progress model and the information of the result of the remote monitoring.

In the condition estimation of component deterioration, a more accurate condition estimation can be realized by integrating the calculation results in the time series model estimated by the acceleration test in advance with the remote monitoring data and inspection data at the time of visit.

The maintenance planning device 200 is remote to limit (or suppress) the operation (number or speed) of the device (all or part) when it is estimated that the total risk will exceed the allowance before the next scheduled visit. To set the gas. In addition, the maintenance planning device 200 manages the contents of the operation restrictions.

The management terminal 300 displays the allowable contents of the operation restrictions and the contents of the operation restrictions that are actually applied to the administrator. In the management terminal 300, an operation for rewriting the contents of the permitted operation restrictions can be executed.

The maintenance planning device 200 detects that the operation has been performed, and corrects the maintenance work plan.

When the part is unlikely to withstand the next regular maintenance due to rapid deterioration of the part or the like, deterioration of the part is suppressed by limiting the operation, and further maintenance can be avoided. What type of operation restrictions are allowed is set in advance at the time of contract. The full range of motion restrictions also includes full stops. However, if the motion restriction is actually applied, there is a possibility that a request to release the motion restriction in a hurry may occur because the effect is large. Thus, it is possible for the administrator to easily change or cancel the contents of the operation restrictions.

The maintenance plan apparatus 200 extracts a condition in which the number of times of service execution is small based on the operation history data for each time zone or each operation target in the normal time of the target apparatus. Then, the maintenance planning device 200 selects the object and contents of the operation restriction, and displays the selected information on the management terminal 300 as recommended contents.

The maintenance plan apparatus 200 temporarily changes the allowable value of the risk set for each facility to a value higher than normal when a predetermined serious event such as a large-scale disaster occurs.

When there is a high possibility that the maintenance resource is insufficient, such as during a large-scale disaster, an increase in the amount of maintenance work can be suppressed by changing the allowable risk value of each gas. However, the maximum allowable risk that can be changed (the minimum that can avoid the effect on the user's body) is not changed, and the allowable value of the gas, which is normally set to a low allowable value, is raised within the range up to the maximum value.

The maintenance plan apparatus 200 temporarily changes the allowable content of the operation limit set for each facility to a wider range than usual when a predetermined serious event such as a large-scale disaster occurs.

The elevator or escalator is the target.

The maintenance plan apparatus 200 limits the number of times the door is opened or closed on a specific floor within a predetermined time to a predetermined number or less, and does not perform a service for the number of calls more than that. Alternatively, the maintenance planning device 200 allocates only other gases in the same bank.

The maintenance planning device 200, on a specific floor or all floors, suppresses the starting acceleration or the operating speed when the door is opened or when the door is closed.

The maintenance planning device 200 is an apparatus for determining whether or not driving is possible based on the measurement setting value of a sensor that detects the capacity in a car or the output of the sensor in all driving, driving in a specific direction, or service from a specific floor. The standard value of the judgment in is changed.

Based on FIG. 20, the hardware structure of the maintenance planning apparatus 200 is demonstrated.

The maintenance planning device 200 includes a processing circuit 209.

The processing circuit 209 includes a screen section 211, an adjustment section 212, a planning section 213, a limiting section 214, a prediction section 215, a recommendation section 216, an event section 217, and a storage section It is hardware that realizes (291).

The processing circuit 209 may be dedicated hardware, or may be a processor 201 that executes a program stored in the memory 202.

When the processing circuit 209 is dedicated hardware, the processing circuit 209 is, for example, a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

ASIC is short for Application Specific Integrated Circuit and FPGA is short for Field Programmable Gate Array.

The maintenance planning device 200 may include a plurality of processing circuits to replace the processing circuit 209. The plurality of processing circuits share the role of the processing circuit 209.

In the maintenance planning device 200, some functions may be realized by dedicated hardware, and the remaining functions may be realized by software or firmware.

As such, the processing circuit 209 can be realized by hardware, software, firmware, or a combination thereof.

Based on FIG. 21, the hardware configuration of the management terminal 300 is demonstrated.

The management terminal 300 includes a processing circuit 309.

The processing circuit 309 is hardware that realizes the control unit 311 and the storage unit 391.

The processing circuit 309 may be dedicated hardware or a processor 301 that executes a program stored in the memory 302.

When the processing circuit 309 is dedicated hardware, the processing circuit 309 is, for example, a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

The management terminal 300 may include a plurality of processing circuits to replace the processing circuit 309. The plurality of processing circuits share the role of the processing circuit 309.

In the management terminal 300, some functions may be realized by dedicated hardware, and the remaining functions may be realized by software or firmware.

As such, the processing circuit 309 can be realized by hardware, software, firmware, or a combination thereof.

The embodiment is an example of a preferred embodiment and is not intended to limit the technical scope of the present invention. Embodiments may be partially implemented or may be implemented in combination with other embodiments. The procedure described using a flowchart or the like may be changed as appropriate.

100: maintenance plan system
101: network
110: monitoring target
111: sensor
120: maintenance plan data
130: adjustment screen
131: Risk graph
132: allowable mark
133: due date mark
134: change interface
140: limit screen
141: restricted interface
200: maintenance plan device
201: processor
202: memory
203: auxiliary memory
204: communication device
209: processing circuit
211: screen unit
212: adjustment unit
213: Planning Department
214: restriction
215: prediction unit
216: Recommendation
217: Event Department
291: memory
292: Communication Department
300: management terminal
301: processor
302: memory
303: auxiliary memory
304: communication device
305: input and output interface
309: processing circuit
311: control unit
391: memory
392: Communication Department
393: display unit
394: Receptionist

Claims (12)

A display unit for displaying an adjustment screen including a risk graph representing a time series of risk values, an allowance mark indicating an allowable value, a deadline mark indicating a due date when a risk value reaches the allowable value, and a change interface for changing the allowable value;
A reception unit accepting a designated allowance specified by the change interface;
An adjustment unit for calculating a new due date based on the specified allowable value and the risk value time series;
Planning department to determine the repair work day based on the new deadline
Maintenance plan system comprising a.
According to claim 1,
A maintenance plan system comprising a screen unit that moves the allowable mark on the adjustment screen based on the specified allowable value and moves the deadline mark on the adjustment screen based on the new deadline date.
The method according to claim 1 or 2,
The risk graph is a line graph,
The allowable mark is a straight line,
The change interface is a rising button for raising the allowable mark and a falling button for lowering the allowable mark.
Maintenance planning system.
The method according to claim 1 or 2,
The planner selects the next visit from the remuneration plan data indicating the visit schedule, and when the next visit is a day before the new due date, a maintenance plan system that determines a visit before the new due date as the maintenance work day. .
The method of claim 4,
The planning unit determines, when the next visit date is a day after the new deadline date, a maintenance plan system for determining an additional visit date before the new deadline date as the maintenance work day.
The method of claim 4,
The maintenance plan system,
A restriction unit for limiting the operation of the monitoring target when the next visit date is a day after the new deadline;
Prediction unit to calculate the time series of risk values after the limit if the next visit is a day after the new deadline
Equipped with,
The adjustment unit calculates a due date after the limit based on the specified allowable value and the time series of risk values after the limit,
The planning unit determines the repair work day based on the deadline after the limit when the next visit is a day after the new deadline.
Maintenance planning system.
The method of claim 6,
The display unit displays a restriction screen including a restriction interface for designating an operation restriction for the monitoring target,
The reception unit receives the designated operation limit specified by the restriction interface,
The limiting unit limits the operation of the monitoring target according to the specified operation limit when the next visit date is a day after the new deadline date,
The predicting unit calculates a time series of risk values after the limit based on the specified operation limit when the next visit date is a day after the new deadline date.
Maintenance planning system.
The method of claim 7,
The restriction interface includes an interface for designating recommended operation restrictions.
The method of claim 8,
A maintenance plan system including a recommendation unit for determining the recommended operation restriction based on an operation history indicating a past operation condition of the monitoring target.
The method according to any one of claims 6 to 9,
A maintenance plan system in which the monitoring target is an elevator or an escalator.
The method according to any one of claims 1 to 10,
The maintenance plan system includes an event unit for determining whether a specific event has occurred,
The adjustment unit calculates an event due date based on an event allowance value and the risk value time series when the specific event occurs,
The planning unit changes the maintenance work day based on the event due date when a specific event occurs
Maintenance planning system.
The display unit displays an adjustment screen including a risk graph representing a time series of risk values, an allowance mark indicating an allowable value, a time limit mark indicating an expiration date when the risk value reaches the allowable value, and a change interface for changing the allowable value,
The acceptance unit accepts the designated allowance specified by the change interface,
The adjustment unit calculates a new due date based on the specified allowable value and the risk value time series,
The planning department determines a repair work day based on the new deadline.
How to plan maintenance.

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