JP6536755B2 - Elevator control device - Google Patents

Description

  The present invention relates to a control device for an elevator.

  Conventionally, when a failure occurs in an elevator, the elevator detects the failure. In this case, for example, measures for failure are implemented by a maintenance worker. As a technique regarding a failure of an elevator, there is, for example, one described in Patent Document 1 below.

Japanese Patent Application Laid-Open No. 2011-020758

  If a similar failure recurs after the measure for the elevator failure is implemented, the elevator detects the failure. On the other hand, when the elevator is restored normally, the elevator can not recognize that it has been restored.

  The present invention was made to solve the above-mentioned problems. The object is to provide an elevator control device that allows the elevator itself to recognize that it has recovered normally.

A control device of an elevator according to the present invention detects a failure that has occurred in elevator equipment and outputs a failure code corresponding to the detected failure, and a date and time when a treatment for the failure is performed for each failure code. a storage unit to store, based on the storage contents of the storage unit, a failure corresponding to the failure by the failure detection unit from the treatment is carried out until the elapse of the pre-Me set threshold or more times for faults And a recovery determination unit that determines that the device in which the failure has occurred is normally recovered when the code is not output, and the threshold corresponds to the same failure code detected by the failure detection unit in the past It is set based on the largest value among the data occupying a lower specific ratio in the distribution of data representing the occurrence intervals of failure .

  In the elevator control device according to the present invention, the recovery determination unit does not output the failure code corresponding to the failure by the failure detection unit until a time greater than or equal to a preset threshold elapses after the treatment for the failure is performed. If it is determined that the device in which the failure has occurred has been restored to normal. Therefore, according to the present invention, the elevator itself can recognize that it has been restored normally.

It is a schematic diagram which shows an example of the structure of an elevator. FIG. 2 is a functional block diagram of a control device in Embodiment 1; FIG. 8 is a diagram showing an example of data distribution representing a failure occurrence interval in the first embodiment. 5 is a flowchart showing an operation example of a control device in Embodiment 1. 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 of the drawings, the same or corresponding parts are denoted by the same reference numerals. Duplicate descriptions will be simplified or omitted as appropriate.

Embodiment 1
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 hoist 3, a rope 4, a car 5, a counterweight 6, and a control device 7. The hoistway 2 is formed, for example, to penetrate each floor of a building (not shown). The hoisting machine 3 is provided, for example, in a machine room (not shown) or the like. The rope 4 is wound around the hoisting machine 3. The car 5 and the counterweight 6 are suspended by the rope 4 in the hoistway 2. The car 5 and the counterweight 6 are raised and lowered by driving the hoisting machine 3. The hoisting machine 3 is controlled by the controller 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, for example, in a building different from the building in which the elevator 1 is installed. The monitoring center 9 is, for example, a server or the like provided in a management company of the elevator 1.

  FIG. 2 is a functional block diagram of the control device in 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 drive of the hoisting machine 3, for example. The operation control unit 10 controls the opening and closing of the door of the elevator 1 via, for example, a door opening and closing device (not shown).

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

  The reporting unit 12 reports to the monitoring center 9 via the maintenance device 8. For example, when a failure is detected by the failure detection unit 11, 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 fault code issued from the control device 7 and the date and time when the issue of the fault code was issued. That is, the monitoring center 9 stores, for example, the occurrence date and time of failure for each failure code.

  When a failure occurs in the elevator 1, for example, a management company of the elevator 1 implements measures for the failure. The treatment for the failure may be, for example, restarting the control device 7 by remote control from the monitoring center 9. The treatment for the failure may be, for example, that a maintenance worker visits the installation site of the elevator 1 to perform maintenance work. The maintenance worker who has performed the maintenance work, for example, sets a recovery flag in the control device 7. The recovery flag is set, for example, through a maintenance terminal carried by a maintenance worker.

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

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

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

  The recovery determination unit 14 determines whether the elevator 1 has recovered normally based on the storage content of the storage unit 13. For example, when a failure code corresponding to the failure is output by the failure detection unit 11 before a time greater than or equal to a threshold has elapsed since the treatment for the previous failure is performed, the recovery determination unit 14 reoccurs 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 greater than or equal to a preset threshold elapses since the treatment for the previous failure is performed, for example, the recovery determination unit 14 It is determined that the device in which the failure has occurred has been restored to normal. The threshold is stored in, for example, the storage unit 13.

  The operation control unit 10 may execute, for example, a control sequence immediately before the occurrence of the failure during a period from when the treatment for the previous failure is performed until a time greater than or equal to the threshold elapses. For example, when the previous failure is “a 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, for example, at regular intervals.

  The execution of the control sequence immediately before the occurrence of a failure is performed, for example, when no landing call and no car call have occurred. The execution of the control sequence immediately before the occurrence of the failure may be performed, for example, in a time zone in which the user of the elevator 1 is not present.

  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 it is determined by the recovery determination unit 14 that the device in which the failure has occurred has been recovered normally, the notification unit 12 issues a notification to the monitoring center 9 that the recovery of the device has been confirmed.

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

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

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

  In the distribution shown in FIG. 3, for example, the notification interval occupying the lower X% is too short, so it can be estimated to be due to the recurrence of the failure. In this case, the threshold is set based on, for example, the largest value among the notification intervals 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 according to a preset method may be set.

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

  FIG. 4 is a flowchart showing an operation example of the control device in 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 setting of the recovery flag is performed (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 a control sequence immediately before failure (step S102). Subsequent to step S102, the control device 7 determines whether a call is currently generated (step S103). If it is determined in step S103 that a call is occurring, the control device 7 performs the process of step S101.

  If it is determined in step S103 that a call has not 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 does not recur, the control device 7 performs the process of step S101.

  If 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 issues a notification to the monitoring center 9 that the recovery has been confirmed (step S107).

  In the first embodiment, for example, the recovery determination unit 14 determines whether or not a time greater than or equal to a preset threshold elapses after the treatment for the previous failure is performed based on the storage content of the storage unit 13. Therefore, when the failure code corresponding to the failure is not output, it is determined that the device in which the failure has occurred has been restored normally. For this reason, according to the first embodiment, the elevator itself can recognize that it has been restored normally.

  In the first embodiment, the operation control unit 10, for example, operates the elevator 1 based on the control sequence immediately before the occurrence of the failure during the period from when the treatment for the previous failure is performed until the time equal to or greater than the threshold passes. To operate. For example, when a failure code corresponding to the failure is output by the failure detection unit 11 before a time greater than or equal to a threshold has elapsed since the treatment for the previous failure is performed, the recovery determination unit 14 reoccurs the failure. It is determined that Therefore, according to the first embodiment, by reproducing the operation of the elevator immediately before the occurrence of a failure, it can be more reliably confirmed whether the elevator has been restored normally.

  In the first embodiment, the threshold used for determination by the recovery determination unit 14 is, for example, the 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 that occupies the ratio of. Therefore, according to the first embodiment, it is possible to more reliably confirm whether or not the elevator has been restored normally, based on the criteria derived from the same failure statistical data.

  In the first embodiment, for example, when it is determined by the recovery determination unit 14 that the device for which a failure has occurred has been recovered normally, the reporting unit 12 monitors that the recovery of the device has been confirmed. Alert to Therefore, according to the first embodiment, even when the treatment for the failure is performed by remote control, the maintenance worker does not need to confirm that the elevator has been restored.

  According to the first embodiment, it is also possible to evaluate, for example, whether or not the failure handling manual used by the maintenance worker was appropriate when taking measures for the failure. The information indicating the used failure handling manual is input, for example, by the maintenance worker into the monitoring center 9 or the like. The following Table 1 shows, as an example, the issue intervals of the failure code A classified according to the failure handling manual used when performing the treatment for the failure corresponding to the failure code A.

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

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

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

  By performing such an evaluation, the management company of the elevator 1 can determine the failure handling manual to be preferentially used for each failure code. Also, the management company of the elevator 1 can review the contents of the failure handling manual. Further, the management company of the elevator 1 can also review the condition of the failure code A. That is, for example, the condition of the failure code A is further divided into cases, and the failure corresponding to the failure code A is divided into the failure corresponding to the failure code A1 and the failure corresponding to the failure code A2. In this case, for example, the improvement can be made such that the manual 2 is associated with the failure code A1 and another manual is associated with the failure code A2.

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

  The respective functions of the operation control unit 10, the failure detection unit 11, the notification unit 12, the storage unit 13, and the recovery determination unit 14 in the control device 7 are realized by a processing circuit. The processing circuit may be dedicated hardware 50. The processing circuit may comprise a processor 51 and a memory 52. The processing circuit is partially 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 partially 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 for example be a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA or 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 notification unit 12, the storage unit 13 and the recovery determination unit 14 is software, firmware, Or realized by a combination of software and firmware. The software and the firmware are described as a program and stored in the memory 52. The processor 51 reads out and executes the program stored in the memory 52 to implement the functions of the respective units. The processor 51 is also referred to as a central processing unit (CPU), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or 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, an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD or the like.

  Thus, the processing circuit can implement 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 mentioned above, the present invention is applicable to an elevator.

Reference Signs List 1 elevator 2 hoistway 3 hoisting machine 4 rope 5 car 6 balance weight 7 control device 8 maintenance device 9 monitoring center 10 operation control unit 11 failure detection unit 12 notification unit 13 storage unit 14 recovery determination unit 50 dedicated hardware 51 Processor 52 memory

Claims (3)

A failure detection unit that detects a failure that has occurred in elevator equipment and outputs a failure code corresponding to the detected failure;
A storage unit that stores, for each failure code, the date and time when the action for the failure was performed;
Based on the stored contents of the storage unit, if a failure code corresponding to the fault is not output by the failure detector treatment since it is carried out until the elapse of the pre-Me set threshold or more times for faults A recovery determination unit that determines that the device in which the failure has occurred has been normally recovered,
Equipped with
The threshold value is set based on the largest value among data that occupies a lower specific ratio in the distribution of data representing a failure occurrence interval corresponding to the same failure code detected by the failure detection unit in the past. Elevator control device. The operation control unit operates the elevator based on the control sequence immediately before the occurrence of the failure during a period from when the treatment for the failure is performed until the time equal to or more than the threshold passes.
The recovery determination unit determines that the failure has occurred when the failure detection unit outputs a failure code corresponding to the failure before a time greater than or equal to the threshold elapses after the treatment for the failure is performed. The control device of the elevator according to claim 1. The device according to claim 1 or 2, further comprising: a notification unit that issues a notification to 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 recovered normally. The control apparatus of the elevator as described in.

Images