JP7244406B2 - Monitoring center and elevator failure recovery support system - Google Patents

Description

The present invention relates to a monitoring center and an elevator failure recovery support system.

Conventionally, when performing repair work for a malfunction that occurred in an elevator, maintenance personnel connected a terminal to the control panel of the elevator, estimated the cause of the failure based on the error code output from the control panel, and then responded to the estimated cause of failure. I was doing restoration work.

However, estimating the cause of a failure from an error code largely relies on the experience of the maintenance personnel, and there are individual differences depending on the skills of the maintenance personnel. For this reason, a method has been devised in which past failure histories are stored in a database, and when a failure occurs, the history is searched, the order in which investigations should be performed to investigate the cause of the failure is calculated, and maintenance personnel are notified. .

For example, in Patent Document 1, when a new failure occurs, a database is searched for a failure history corresponding to the error code of the failure. It is stated that the investigation item with the shortest investigation time is ranked first for the failure cause with the largest number of failures.

JP 2003-104644 A

However, in the technique described in Patent Document 1, only the time required for investigation is taken into consideration in the recovery work at the time of failure. However, in actuality, depending on the cause of the failure, the time required for investigation may be short but the time required for countermeasures may be long, or the time required for investigation may be long but the time required for countermeasures may be short.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and its object is to provide a monitoring center and an elevator failure recovery support system capable of performing efficient recovery work.

In order to solve the above problems, the present invention relates to failures that occurred in the elevator in the past in a monitoring center having communication means for communicating with elevators and maintenance personnel portable terminals, the cause of the failure, and the investigation time required for each cause of the failure. , and the countermeasure time required for each of the failure causes, and based on the failure information of the elevator received via the communication means, the database is searched to extract a plurality of candidate failure causes. and a calculation means for calculating a priority order for each failure cause extracted by the search means, using the occurrence frequency information, the investigation time, and the countermeasure time.

ADVANTAGE OF THE INVENTION According to this invention, the monitoring center which can perform efficient restoration work, and an elevator failure restoration support system can be provided.

1 is an overall configuration diagram showing an elevator failure recovery support system according to an embodiment of the present invention; FIG. Skill level data of maintenance personnel. 4 is a table showing a method of calculating standard recovery time by recovery time calculation means according to the present embodiment; A table showing individual recovery time for each maintenance worker. 4 is a table showing a method of prioritizing failure causes by a priority calculation means according to the present embodiment; A table showing a method of prioritizing failure causes for maintenance personnel C. FIG. A table showing a conventional prioritization method as a comparative example. 4 is a flowchart of the elevator failure recovery support system according to the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram showing an elevator failure recovery support system according to this embodiment. As shown in FIG. 1, the elevator failure recovery support system includes an elevator 1, a maintenance personnel mobile terminal 3 carried by a maintenance personnel 4, and a monitoring center 2 located away from the building where the elevator 1 is installed. It is configured.

First, the elevator 1 has a control panel 11 for controlling the operation of the elevator and a communication terminal 12 for communicating with the monitoring center 2 . The communication terminal 12 is always connected to the error code output terminal of the control panel 11, and issues an abnormal signal to the monitoring center 2 when the elevator 1 fails. The error signal contains various types of failure information such as elevator identification data and an error code indicating the details of the failure.

Next, the monitoring center 2 accumulates communication means (first communication means 21 and second communication means 28) for communicating with the elevator 1 and the maintenance personnel portable terminal 3, and information on past failures of each elevator. database (failure history database 22, elevator information database 23, and maintenance personnel skill level database 24).

A first communication means 21 of the monitoring center 2 receives an abnormal signal from the communication terminal 12 of the elevator 1 via a dedicated line, the Internet or other wired transmission line or wireless transmission line. The second communication means 28 of the monitoring center 2 is for sending and receiving data to and from the communication means 31 of the maintenance personnel portable terminal 3 .

In addition, in the failure history database 22 of the monitoring center 2, regarding failures that occurred in each elevator, identification data such as elevator model and serial number, error code, failure date and time, failure status, recovery work content, failure cause, investigation time , countermeasure time, etc. are recorded.

Here, a case where an error code corresponding to abnormal speed is issued will be described as an example of how to deal with a failure that has occurred in an elevator. There are various candidates for devices that cause the speed abnormality, but an example of recovery work will be described below, focusing on a rotary encoder that detects the number of revolutions of the motor of the hoist.

Assuming that the cause of the failure is in the rotary encoder, first, confirm whether or not the car moves up and down. After that, items such as whether there is vibration when the car is raised and lowered and whether a specific signal is output when the car is raised and lowered are investigated. The time required to investigate these items is the investigation time in this specification. If this investigation requires replacement of the rotary encoder or the like, the time required for this replacement or the like is the countermeasure time in this specification. When removing the malfunctioning rotary encoder and installing a new rotary encoder, it is necessary to attach and detach with high accuracy, so the time required for countermeasures varies depending on the skill level of maintenance personnel.

Next, in the elevator information database 23 of the monitoring center 2, information such as the address and map where the elevator 1 is installed is accumulated in a form corresponding to the identification data.

In the maintenance staff skill level database 24 of the monitoring center 2, skill level information for each failure cause is accumulated for each maintenance staff. In FIG. 2, three maintenance personnel, an experienced maintenance worker A, a general-experienced maintenance worker B, and a less-experienced maintenance worker C, have about each target device that is a candidate for the cause of failure. It indicates the proficiency level of the For example, when the target device is a rotary encoder main body, the skill level of maintenance worker A, who is familiar with handling it, is a good value of 1.0, whereas the skill level of maintenance worker B is 1.4, and the skill level of maintenance worker C is 1.4. 1.9. On the other hand, when the target device is a push button, it can be seen that there is no difference in skill level depending on the experience of maintenance personnel.

Furthermore, the monitoring center 2 has a failure search means 25 , a recovery time calculation means 26 and a priority calculation means 27 .

When the first communication means 21 receives the failure information from the elevator 1, the failure search means 25 checks if there is any past failure data accumulated in the failure history database 22 related to the received failure information. etc. to search. Specifically, regarding the model that is the same as or similar to the model corresponding to the identification data included in the received failure information, is there any failure that is the same as or similar to the failure corresponding to the error code or failure status, etc. included in the failure information? to search for . If the same or similar failure is found as a result of the search and a plurality of candidates for the cause of the failure are assumed, the failure search means 25 extracts the investigation time and the countermeasure time for each failure cause. Here, when there are a plurality of cases of the same cause of failure in the past failure data, the average value of each case is used as the investigation time and countermeasure time required for the cause of the failure, for example. Further, the failure search means 25 also extracts the occurrence probability for each failure cause by counting the number of occurrences of the same failure cause. When the identification data is received from the elevator 1, the failure search means 25 searches the elevator information database 23 for elevator information corresponding to the received identification data, and extracts information such as the address of the elevator 1. It has become.

The recovery time calculation means 26 calculates the recovery time for each candidate failure cause using the investigation time and the countermeasure time. A method for calculating the recovery time will be specifically described with reference to FIG. As shown in FIG. 3, the recovery time calculation means 26 calculates the standard A recovery time 104 is calculated.

Here, the recovery time may simply be a value obtained by adding the investigation time 102 and the countermeasure time 103 . However, in actual recovery work, investigation and countermeasures are performed in parallel, and there is a possibility that a clear separation may be difficult. It is added after weighting. Although this coefficient is not limited to 0.4, it is desirable to set it to 1 or less because investigations are more important in general restoration work. Instead of multiplying the countermeasure time 103 by a factor of 1 or less, the investigation time 102 may be multiplied by a factor of 1 or more.

Further, the recovery time calculation means 26 may refer to the maintenance staff skill level database 24 and add the skill level information for each failure cause of the maintenance staff actually in charge to correct the standard recovery time 104 described above. good. For example, if the person in charge of recovery work is maintenance worker C, the standard recovery time 104 described above is multiplied by the skill level information 109 of maintenance worker C in FIG. A recovery time 112 is calculated. As shown in FIG. 4, the individual recovery time 112 for maintenance personnel C is significantly different from the standard recovery time 104, and affects the accuracy of prioritization, which will be described later. In particular, regarding the countermeasure work, there is a possibility that the time required for countermeasure work varies depending on the level of skill. The restoration time may be corrected.

Next, the priority calculation means 27 prioritizes each failure cause calculated by the recovery time calculation means 26 using the recovery time and the occurrence frequency information (occurrence probability or number of occurrences). . A specific method of prioritization will be described with reference to FIG. The priority calculating means 27 divides the occurrence frequency information (for example, the occurrence probability 105) of each failure cause 101 by the standard recovery time 104, and divides each failure cause so that the priority increases in descending order of the divided value. A priority 106 is assigned to 101 .

However, for fault causes with a high occurrence probability 105 of a certain value (for example, 20%) or higher, the priority may be set higher in descending order of the occurrence probability 105 regardless of the division value described above. For example, as shown in FIG. 5, the compensating chain has a division value of 0.75, which is lower than that of a push button. , is ranked first as the priority 106 .

FIG. 6 shows an example in which maintenance personnel C's skill level information for each cause of failure is taken into account to give priority. In this case, the priority calculation means 27 divides the occurrence probability 105 by the individual recovery time 112 of the maintenance worker C, and prioritizes based on this division value. In this way, by taking into consideration the skill level information of the maintenance personnel, highly accurate prioritization becomes possible. For example, regarding the tension pulley, although the priority 106 calculated simply based on the standard recovery time 104 is third as shown in FIG. It will be the 4th place like.

FIG. 7 shows, as a comparative example, a case where prioritization is performed only by the occurrence probability and investigation time as in the conventional art. It can be seen that the priority 114 according to the conventional method shown in FIG. 7 and the priorities 106 and 113 according to the method of the present embodiment shown in FIGS. As described above, according to the present embodiment, since it is possible to perform highly accurate prioritization in consideration of countermeasure time and skill level of maintenance personnel, it is possible to perform efficient restoration work and shorten the downtime of the elevator 1. becomes.

The maintenance personnel portable terminal 3 includes communication means 31 for communicating with the monitoring center 2, processing means 32 for editing information received by the communication means 31 in a predetermined format, and information processed by the processing means 32. and a display means 33 for displaying information. Then, the maintenance staff 4 receives information about the priority of the equipment to be investigated from the monitoring center 2 via the maintenance staff mobile terminal 3 . Note that failure information such as an error code may be received from the monitoring center 2 or may be received directly from the elevator 1 .
Further, when the failure has been dealt with, the maintenance staff inputs information such as the cause of the failure, investigation time, and countermeasure time to the maintenance staff portable terminal 3 . This input information is transmitted as new failure information to the monitoring center 2 via the communication means 31, and stored in the failure history database 22 in the monitoring center 2 in correspondence with the error code and the like.

The operation of the elevator failure recovery support system configured as described above will be described with reference to the flowchart of FIG.

First, when some kind of failure occurs in the elevator 1, the communication terminal 12 of the elevator 1 transmits an abnormal signal including the identification data of the elevator 1 and an error code to the monitoring center 2 (step S1). The failure search means 25 of the monitoring center 2 receives the identification data, error code, etc. from the first communication means 21 (step S2).

Even if there is no anomaly alarm, if there is a call from the manager of the elevator 1 or a user, the failure state is entered at the monitoring center 2 based on the information obtained from the manager, etc., or maintenance personnel go to the site. The confirmed failure state is input by the maintenance staff portable terminal 3 (S1' to S2'). As a result, the first communication means 21 of the monitoring center 2 enters the same state as when it receives an anomaly notification including an error code.

Next, based on the identification data, the fault search means 25 searches the elevator information database 23 for information such as the address and map of the elevator 1 in which the fault has occurred (step S3). Furthermore, the failure search means 25 determines whether or not a failure similar to or similar to the failure has occurred in the failure history database 22 in the elevator same or similar to the elevator 1 (step S4). If there is a failure history that does, it is extracted (step S5).

Further, the failure search means 25 classifies the failure causes of the extracted failure history, determines whether there are multiple failure causes (step S6), and if there are multiple failure causes, aggregates the number of failure occurrences for each failure cause. , into failure occurrence probabilities (step S7).

Next, the failure search means 25 calculates the average value of the investigation time and the countermeasure time for each failure cause (steps S8 and S9). Further, the failure searching means 25 calculates the standard restoration time based on the investigation time and the countermeasure time (step S10). Further, the failure search means 25 refers to the maintenance staff skill level database 24 and corrects the standard recovery time using a coefficient based on the skill level information of the maintenance staff in charge (step S11).

After that, the priority calculation means 27 calculates the priority using the recovery time calculated by the recovery time calculation means 26 and the failure occurrence probability (step S12).

When the obtained priority order is transmitted to the maintenance staff portable terminal 3 by the second communication means 28 (step S13), the maintenance staff 4 investigates the cause and implements countermeasure work (step S14). When the failure is recovered (step S15), the maintenance staff 4 uses the maintenance staff portable terminal 3 to input the cause of the failure, etc., and the result is registered in the failure history database 22 (step S16).

In addition, if the same or similar failure has not occurred in the past in step S4, or if the number of failure occurrences is extremely small and it is meaningless to convert it into a probability, a professional engineer at the support center and the local maintenance staff 4 The cause of the failure is investigated while consulting (step S5').

1 Elevator 2 Monitoring center 3 Maintenance personnel portable terminal 4 Maintenance personnel 11 Control panel 12 Communication terminal 21 First communication means 22 Failure history database 23 Elevator information database 24 Maintenance personnel skill database 25 ... failure search means 26 ... restoration time calculation means 27 ... priority calculation means 28 ... second communication means 31 ... communication means 32 ... processing means 33 ... display means

Claims (5)

At a monitoring center having communication means for communicating with elevators and maintenance staff mobile terminals,
Regarding failures that occurred in the elevator in the past, the cause of the failure, the investigation time required for each cause of failure , the countermeasure time required for each cause of failure, and the skill level information of each maintenance worker for each cause of failure are accumulated. a database that
search means for searching the database based on the elevator failure information received via the communication means and extracting a plurality of candidate failure causes;
For each failure cause extracted by the search means, priority is given using the occurrence frequency information, the investigation time , the countermeasure time , and the skill level information of the maintenance staff corresponding to the elevator that received the failure information. a calculation means for calculating the ranking;
monitoring center with At a monitoring center having communication means for communicating with elevators and maintenance staff mobile terminals,
a database for accumulating failure causes, investigation time required for each failure cause, and countermeasure time required for each failure cause with respect to failures that occurred in the elevator in the past;
search means for searching the database based on the elevator failure information received via the communication means and extracting a plurality of candidate failure causes;
calculation means for calculating a priority order for each failure cause extracted by the search means, using the occurrence frequency information, the investigation time, and the countermeasure time;
with
The occurrence frequency information is the number of occurrences or occurrence probability for each failure cause,
The calculation means calculates a standard recovery time by adding the time obtained by multiplying the countermeasure time by a coefficient of 1 or less and the investigation time, and divides the occurrence frequency information by the standard recovery time to determine the failure cause in descending order. A monitoring center characterized by giving priority to In the monitoring center of claim 2 ,
The database stores skill level information for each cause of failure of the maintenance staff corresponding to the elevator that received the failure information,
The monitoring center, wherein the calculation means corrects the standard recovery time by multiplying the standard recovery time by the skill level information of the maintenance worker. An elevator failure recovery support system comprising an elevator, a maintenance personnel portable terminal carried by a maintenance personnel, and a monitoring center connected to the elevator and the maintenance personnel portable terminal by communication means,
Regarding failures that have occurred in the elevator in the past, the monitoring center collects the cause of the failure, the investigation time required for each cause of failure , the countermeasure time required for each cause of failure, and the skill level of each maintenance worker for each cause of failure. has a database that accumulates degree information ,
When a failure occurs in the elevator, the elevator transmits failure information to the monitoring center via the communication means;
Based on the failure information, the monitoring center searches the database to extract a plurality of candidate failure causes, and for each failure cause, the occurrence frequency information, the investigation time , the countermeasure time , and the calculating the priority using the skill level information of the maintenance staff corresponding to the elevator that received the failure information ,
The elevator failure recovery support system, wherein the maintenance staff portable terminal receives the priority calculated by the monitoring center via the communication means. In an elevator failure recovery support method for supporting recovery work when a failure occurs in an elevator,
The elevator transmits failure information to the monitoring center via communication means when a failure occurs,
Based on the failure information, the monitoring center searches a database to extract a plurality of candidate failure causes, and provides occurrence frequency information, investigation time , countermeasure time , and the failure information for each failure cause. Calculate the priority using the skill level information of the maintenance staff corresponding to the received elevator ,
An elevator failure recovery support method, wherein the maintenance staff portable terminal receives the priority order calculated by the monitoring center via communication means.

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