WO2018122918A1

WO2018122918A1 - Elevator control device

Info

Publication number: WO2018122918A1
Application number: PCT/JP2016/088703
Authority: WO
Inventors: 恒次阪田; 奈々穂大澤; 賢一小泉; 広泰田畠; 智史山▲崎▼
Original assignee: 三菱電機株式会社; 三菱電機ビルテクノサービス株式会社
Priority date: 2016-12-26
Filing date: 2016-12-26
Publication date: 2018-07-05
Also published as: JPWO2018122918A1; KR102174105B1; JP6536755B2; CN110114295A; KR20190100288A; CN110114295B

Abstract

Provided is an elevator control device that makes it possible for an elevator to recognize its own restoration to normal. This elevator control device (7) comprises: a malfunction detection unit (11) that detects malfunctions that have occurred at the apparatuses of an elevator (1) and outputs malfunction codes that correspond to detected malfunctions; a storage unit (13) that, for each malfunction code, stores a date and time for when the malfunction was dealt with; and a restoration determination unit (14) that, on the basis of the content stored in the storage unit (13), determines that an apparatus that had malfunctioned has been restored to normal when the malfunction code that corresponds to the malfunction has not been outputted by the malfunction detection unit (11) between when the malfunction was dealt with and when an amount of time that is equal to or greater than a preset threshold value has passed.

Description

Elevator control device

The present invention relates to an elevator control device.

Conventionally, when a failure occurs in an elevator, the elevator detects the failure. In this case, for example, a maintenance worker takes measures against the failure. As a technique related to the failure of an elevator, for example, there is one described in Patent Document 1 below.

Japanese Unexamined Patent Publication No. 2011-020758

If a similar failure recurs after an action is taken for an elevator failure, the elevator detects the failure. On the other hand, when the elevator recovers normally, the elevator cannot recognize that it has recovered.

The present invention has been made to solve the above problems. The purpose is to provide an elevator control device that allows the elevator itself to recognize that it has been restored normally.

The elevator control device according to the present invention detects a failure that has occurred in an elevator device, outputs a failure code corresponding to the detected failure, and indicates the date and time when the measure for the failure was performed for each failure code. And a failure code corresponding to the failure by the failure detection unit until a time equal to or greater than a preset threshold value has elapsed after the action for the failure is performed based on the storage content stored in the storage unit. And a recovery determination unit that determines that the device in which the failure has occurred has been normally recovered when it is not output.

In the elevator control device according to the present invention, the recovery determination unit does not output a failure code corresponding to the failure by the failure detection unit until a time equal to or greater than a preset threshold has elapsed since the measure for the failure was performed. If the device has failed, it is determined that the device has been successfully restored. For this reason, according to this invention, the elevator itself can recognize having recovered normally.

It is a schematic diagram which shows an example of the structure of an elevator. 3 is a functional block diagram of a control device in Embodiment 1. FIG. 6 is a diagram illustrating an example of a data distribution representing a failure occurrence interval in the first embodiment. FIG. 3 is a flowchart illustrating an operation example of the control device according to the first embodiment. It is a hardware block diagram of a control apparatus.

The present invention will be described in detail with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1 FIG.
It is a schematic diagram which shows an example of the structure of an elevator.

As shown in FIG. 1, the elevator 1 includes a hoistway 2, a hoisting machine 3, a rope 4, a car 5, a counterweight 6, and a control device 7. The hoistway 2 is formed, for example, so as to penetrate each floor of a building (not shown). The hoisting machine 3 is provided, for example, in a machine room (not shown). The rope 4 is wound around the hoisting machine 3. The car 5 and the counterweight 6 are suspended in the hoistway 2 by the rope 4. The car 5 and the counterweight 6 move up and down when the hoisting machine 3 is driven. The hoisting machine 3 is controlled by the control device 7.

The control device 7 is electrically connected to the hoisting machine 3 and the maintenance device 8. The maintenance device 8 has a function of communicating with the monitoring center 9.

The control device 7 and the maintenance device 8 are provided, for example, in a building where the elevator 1 is installed. The monitoring center 9 is provided in a building different from the building where the elevator 1 is installed, for example. The monitoring center 9 is, for example, a server provided in a management company for the elevator 1.

FIG. 2 is a functional block diagram of the control device according to the first embodiment.

As shown in FIG. 2, the control device 7 includes an operation control unit 10, a failure detection unit 11, a notification unit 12, a storage unit 13, and a recovery determination unit 14.

The operation control unit 10 controls the operation of the elevator 1. The operation control unit 10 controls the movement of the car 5 by controlling the driving of the hoisting machine 3, for example. For example, the operation control unit 10 controls the opening and closing of the door of the elevator 1 via a door opening and closing device (not shown).

The failure detection unit 11 detects a failure that has occurred in the elevator 1 device. The failure detection unit 11 outputs a failure code corresponding to the detected failure. The failure code is, for example, preset information for specifying the type of failure and the location where the failure has occurred.

The reporting unit 12 reports to the monitoring center 9 via the maintenance device 8. For example, when the failure detection unit 11 detects a failure, the notification unit 12 issues a failure code corresponding to the failure to the monitoring center 9.

The monitoring center 9 stores, for example, the failure code issued from the control device 7 and the date and time when the failure code was issued. That is, the monitoring center 9 stores, for example, the occurrence date and time of the failure for each failure code.

When a failure occurs in the elevator 1, for example, the management company for the elevator 1 takes measures against the failure. The measure for the failure may be, for example, restarting the control device 7 by remote operation from the monitoring center 9. The measure against the failure may be, for example, that a maintenance worker visits a place where the elevator 1 is installed to perform maintenance work. The maintenance worker who performed the maintenance work sets a recovery flag in the control device 7, for example. The recovery flag is set, for example, via a maintenance terminal carried by the maintenance worker.

The storage unit 13 stores, for example, the date and time when a failure is detected by the failure detection unit 11 for each failure code. That is, the storage unit 13 stores, for example, the failure occurrence date and time for each failure code.

The storage unit 13 stores, for example, the control sequence of the elevator 1 immediately before the occurrence of the failure for each failure code. The control sequence includes, for example, information indicating the stop position of the car 5, the moving range of the car 5, the moving distance of the car 5, the moving speed of the car 5, the door opening / closing of the door, and the like. That is, for example, the storage unit 13 stores, for each failure code, the operation of the elevator 1 performed immediately before the occurrence of the failure or the operation of the elevator 1 that was scheduled to be performed immediately before the occurrence of the failure.

The storage unit 13 stores, for example, the date and time when the measure for the failure was performed for each failure code. The date and time when the measure for the failure was performed is, for example, the date and time when the control device 7 was restarted and the date and time when the recovery flag was set.

The restoration determination unit 14 determines whether or not the elevator 1 has been normally restored based on the storage contents of the storage unit 13. For example, when the failure detection unit 11 outputs a failure code corresponding to the failure before the time equal to or greater than the threshold has elapsed since the action for the previous failure was performed, the recovery determination unit 14 recurs the failure. It is determined that For example, when the failure detection unit 11 does not output a failure code corresponding to the failure until a time equal to or greater than a preset threshold has elapsed since the treatment for the previous failure was performed, the recovery determination unit 14 It is determined that the device in which the failure has occurred has been restored normally. The threshold value is stored in the storage unit 13, for example.

The operation control unit 10 may execute a control sequence immediately before the occurrence of the failure, for example, during a period from when the measures for the previous failure are performed until a time equal to or greater than the threshold value elapses. For example, when the previous failure was “door opening failure on the 9th floor”, the operation control unit 10 may move the car 5 to the 9th floor and repeat the door opening and closing during the above period. The execution of the control sequence immediately before the occurrence of the failure may be repeated at regular intervals, for example.

The execution of the control sequence immediately before the occurrence of the failure is performed when, for example, a hall call and a car call are not generated. The execution of the control sequence immediately before the occurrence of the failure may be performed, for example, during a time period when there is no user of the elevator 1.

For example, when the recovery determination unit 14 determines that the failure has recurred, the notification unit 12 issues a failure code corresponding to the failure to the monitoring center. For example, when the recovery determination unit 14 determines that the device in which the failure has occurred has been normally recovered, the notification unit 12 notifies the monitoring center 9 that the recovery of the device has been confirmed.

The threshold value used for determination by the recovery determination unit 14 is set for each failure code, for example. For example, the threshold is set based on the largest value among the data occupying a specific ratio in the lower order in the distribution of data representing the occurrence intervals of failures corresponding to the same failure code. The failure occurrence interval is derived, for example, from the failure occurrence date and time for each failure code stored in the monitoring center 9.

FIG. 3 is a diagram showing an example of a data distribution representing a failure occurrence interval in the first embodiment. Hereinafter, an example of a method for setting the threshold will be described with reference to FIG.

The horizontal axis in Fig. 3 represents the value of the reporting interval. The vertical axis in FIG. 3 represents the frequency at which each reporting interval appears. The notification interval is an elapsed time from when a certain failure code is issued until the same failure code is issued next. That is, the notification interval is data representing the occurrence interval of failures corresponding to the same failure code.

In the distribution shown in FIG. 3, for example, the reporting interval occupying the lower X% is too short and can be estimated to be due to the recurrence of the failure. In this case, for example, the threshold is set based on the largest value in the reporting interval occupying the lower X%. As the threshold, for example, the largest value may be set as it is. As the threshold value, for example, a value obtained by adjusting the largest value by a preset method may be set.

The threshold setting may be automatically performed by the function of the monitoring center 9, for example. The threshold setting may be performed, for example, by a maintenance worker operating a maintenance terminal connected to the control device 7.

FIG. 4 is a flowchart showing an operation example of the control device according to the first embodiment.

The control device 7 determines, for example, whether or not a time equal to or greater than a threshold has elapsed since the restart or the recovery flag was set (step S101). If it is determined in step S101 that the time equal to or greater than the threshold has not elapsed, the control device 7 reads the control sequence immediately before the failure (step S102). Subsequent to step S102, the control device 7 determines whether or not a call is currently being generated (step S103). If it is determined in step S103 that a call has occurred, the control device 7 performs the process of step S101.

When it is determined in step S103 that no call has occurred, the control device 7 executes the read control sequence (step S104). Following step S105, the control device 7 determines whether or not the failure has recurred (step S105). If it is determined in step S105 that the failure has not recurred, the control device 7 performs the process of step S101.

When it is determined in step S105 that the failure has recurred, the control device 7 issues a failure code to the monitoring center 9 (step S106). If it is determined in step S101 that the time equal to or greater than the threshold has elapsed, the control device 7 notifies the monitoring center 9 that the recovery has been confirmed (step S107).

In the first embodiment, for example, the recovery determination unit 14 is based on the contents stored in the storage unit 13 until the time equal to or longer than a preset threshold elapses after the action for the previous failure is performed. When the failure code corresponding to the failure is not output by the above, it is determined that the device in which the failure has occurred has been restored normally. For this reason, according to Embodiment 1, the elevator itself can recognize that it recovered normally.

In the first embodiment, for example, the operation control unit 10 determines the elevator 1 based on the control sequence immediately before the occurrence of the failure during a period from when the treatment for the previous failure is performed until the time equal to or greater than the threshold value elapses. To work. For example, when the failure detection unit 11 outputs a failure code corresponding to the failure before the time equal to or greater than the threshold has elapsed since the action for the previous failure was performed, the recovery determination unit 14 recurs the failure. It is determined that For this reason, according to Embodiment 1, it is possible to more reliably confirm whether or not the elevator has been normally restored by reproducing the operation of the elevator immediately before the occurrence of the failure.

In the first embodiment, the threshold value used for the determination by the recovery determination unit 14 is, for example, a lower specification in the distribution of data representing the occurrence intervals of failures corresponding to the same failure code detected by the failure detection unit 11 in the past. It is set based on the largest value among the data occupying the ratio of. For this reason, according to Embodiment 1, it can be confirmed more reliably whether or not the elevator has been normally restored based on the standard derived from the statistical data of the same failure.

In the first embodiment, for example, when the recovery determining unit 14 determines that the device in which the failure has occurred has been normally recovered, the reporting unit 12 confirms that the recovery of the device has been confirmed. To report. For this reason, according to Embodiment 1, even if it is a case where the countermeasure with respect to a failure is performed by remote control, it is not necessary for a maintenance worker to confirm that the elevator restored.

According to the first embodiment, for example, it is possible to evaluate whether or not a failure handling manual used by a maintenance worker when performing a failure countermeasure is appropriate. Information indicating the used failure handling manual is input to the monitoring center 9 or the like by a maintenance worker, for example. Table 1 below shows, as an example, the reporting interval of the fault code A classified for each fault handling manual used when performing a measure for the fault corresponding to the fault code A.

According to Table 1, when the procedure is performed using the manual 1, most of the reporting intervals are less than the threshold value. That is, when the treatment is performed according to the manual 1, the recurrence rate of failure is high. For this reason, the manual 1 is evaluated as inappropriate as a countermeasure against the failure corresponding to the failure code A.

According to Table 1, when the procedure is performed using Manual 2, about half of the reporting intervals are less than the threshold. That is, when the treatment is performed according to the manual 2, the failure recurrence rate is moderate. For this reason, the manual 2 is evaluated as insufficient as a countermeasure for the failure corresponding to the failure code A.

According to Table 1, when the procedure is performed using the manual 3, most of the notification intervals are equal to or greater than the threshold value. That is, when the treatment is performed according to the manual 3, the failure recurrence rate is low. Therefore, the manual 3 is evaluated as being appropriate as a countermeasure against the failure corresponding to the failure code A.

行う By performing such an evaluation, the management company of the elevator 1 can determine the failure handling manual to be used with priority for each failure code. Moreover, the management company of the elevator 1 can review the content of the failure handling manual. Further, the management company of the elevator 1 can review the condition of the failure code A. That is, for example, the condition of the failure code A is further classified into cases, and the failure corresponding to the failure code A is divided into a failure corresponding to the failure code A1 and a failure corresponding to the failure code A2. In this case, for example, the manual 2 can be associated with the failure code A1, and another manual can be associated with the failure code A2.

FIG. 5 is a hardware configuration diagram of the control device.

Each function of the operation control unit 10, the failure detection unit 11, the reporting unit 12, the storage unit 13, and the recovery determination unit 14 in the control device 7 is realized by a processing circuit. The processing circuit may be dedicated hardware 50. The processing circuit may include a processor 51 and a memory 52. A part of the processing circuit is formed as dedicated hardware 50, and may further include a processor 51 and a memory 52. FIG. 5 shows an example in which the processing circuit is partly formed as dedicated hardware 50 and includes a processor 51 and a memory 52.

When at least a part of the processing circuit is at least one dedicated hardware 50, the processing circuit may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or the like. The combination is applicable.

When the processing circuit includes at least one processor 51 and at least one memory 52, each function of the operation control unit 10, the failure detection unit 11, the reporting unit 12, the storage unit 13, and the recovery determination unit 14 includes software, firmware, Alternatively, it is realized by a combination of software and firmware. Software and firmware are described as programs and stored in the memory 52. The processor 51 reads out and executes the program stored in the memory 52, thereby realizing the function of each unit. The processor 51 is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a DSP. The memory 52 corresponds to, for example, a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, and an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.

As described above, the processing circuit can realize each function of the control device 7 by hardware, software, firmware, or a combination thereof. Each function of the monitoring center 9 is also realized by a processing circuit similar to the processing circuit shown in FIG.

As described above, the present invention can be applied to an elevator.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Hoistway 3 Hoisting machine 4 Rope 5 Car 6 Counterweight 7 Control device 8 Maintenance device 9 Monitoring center 10 Operation control part 11 Failure detection part 12 Alerting part 13 Storage part 14 Restoration judgment part 50 Dedicated hardware 51 Processor 52 memory

Claims

A fault detection unit that detects a fault that has occurred in the elevator equipment and outputs a fault code corresponding to the detected fault;
A storage unit that stores the date and time when the failure was taken for each failure code;
Based on the storage content of the storage unit, when a failure code corresponding to the failure is not output by the failure detection unit until a time equal to or greater than a preset threshold has elapsed since the action for the failure was performed A recovery determination unit that determines that the device in which the failure occurred has recovered normally;
Elevator control device with.
An operation control unit that operates the elevator based on a control sequence immediately before the occurrence of the failure during a period from when the measure for the failure is performed until a time equal to or greater than the threshold value elapses;
The recovery determination unit determines that the failure has recurred when a failure code corresponding to the failure is output by the failure detection unit before the time equal to or greater than the threshold has elapsed since the failure was treated. The elevator control device according to claim 1.
The threshold is set based on the largest value among the data occupying a specific ratio in the lower order in the distribution of data representing the occurrence intervals of failures corresponding to the same failure code detected by the failure detection unit in the past. The elevator control device according to claim 1 or 2.
4. The apparatus according to claim 1, further comprising a notification unit that notifies the monitoring center that the recovery of the device has been confirmed when the recovery determination unit determines that the device in which the failure has occurred has been normally recovered. The elevator control device according to any one of the above.