CN108455394B - Elevator operation inspection method and device, management server and elevator control system - Google Patents
Elevator operation inspection method and device, management server and elevator control system Download PDFInfo
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- CN108455394B CN108455394B CN201710091665.1A CN201710091665A CN108455394B CN 108455394 B CN108455394 B CN 108455394B CN 201710091665 A CN201710091665 A CN 201710091665A CN 108455394 B CN108455394 B CN 108455394B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- Automation & Control Theory (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides an elevator operation inspection method and device, a management server and an elevator control system. The elevator operation inspection method comprises the following steps: a data monitoring step of comparing operation condition data indicating the operation condition of the elevator with an inspection threshold set to be smaller than the threshold for determining the occurrence of the failure, to determine whether there is a tendency of the failure of the elevator; a tracking determination step of determining a tracking condition and historical operation data corresponding to the tracking condition when the elevator is judged to have a tendency of failure based on data related to the failure; an operation data acquisition step of acquiring tracking data in the operation of the elevator based on the tracking condition; and an inspection position determining step of performing a process of determining an inspection position to be inspected by comparing the tracking data with the determined historical operating data.
Description
Technical Field
The present invention relates to inspection and maintenance of an elevator, and particularly to an elevator operation inspection method and apparatus, a management server, and an elevator control system.
Background
Currently, elevator systems employ both local and remote integrated control and management. Fig. 1 is a schematic diagram showing the structure of an elevator and its control system. As shown in fig. 1, the elevator 1' includes a car 11, a counterweight, a hoist, a rope, a sheave (not shown), and the like, a drive unit 13 such as a motor for powering the elevator, a power conversion device 14, and the like. Various sensors 15 are attached to each component of the elevator, such as the car 11, the drive unit 13, and the power converter 14. Examples of the sensor 15 include a brake signal output detector, a load detector, a motor current detector, and a power converter main circuit detector. The sensor 15 is used not only for elevator control but also for operation monitoring of the elevator 1' and the like. The data detected by the sensor 15 is transmitted to a controller 2' of the elevator, which will be described later, for the purpose of monitoring the operation of the elevator, maintenance, fault diagnosis, and the like. The controller 2 'sends command signals to elevator components such as the power converter 14 to control the operation of the elevator 1', and receives various detection signals or state quantities from sensors 15 provided in elevator components such as the car 11, the drive unit 13, and the power converter 14 as one type of elevator operation data. The management server 3 'is provided in a management center, is connected to the controller 2' of the elevator 1 'via the network 4, and manages operation data from the elevator controller 2'.
In addition, in order to ensure safe operation of the elevator, the elevator needs to be periodically or as needed to be subjected to maintenance inspection. The inspector checks the failure positions one by one based on the operation data detected by the sensor 15 or the like, so that the amount of work done by the inspector is large.
Disclosure of Invention
In view of the above, the present invention provides an elevator operation inspection method and device, a management server, and an elevator control system.
According to an aspect of the present invention, there is provided an elevator operation checking method including: a data monitoring step of comparing operation condition data indicating an operation condition of an elevator with an inspection threshold value set to be smaller than the threshold value for determining occurrence of a failure, to determine whether or not there is a tendency of the failure of the elevator; a tracking determination step of determining a tracking condition and historical operation data corresponding to the tracking condition when the elevator is judged to have a tendency of failure based on data related to the failure; an operation data acquisition step of acquiring tracking data in the operation of the elevator based on the tracking condition; and an inspection position determining step of performing a process of determining an inspection position to be inspected by comparing the tracking data with the determined historical operating data.
In the data monitoring step, it may be determined that the elevator is likely to have a failure when the time during which the operation condition data exceeds the inspection threshold is longer than a threshold time or the number of times when the operation condition data exceeds the inspection threshold is longer than a threshold number of times.
Here, the threshold time may be a predetermined time determined in advance, or a time based on a time when the operation condition data exceeds the threshold for inspection in the elevator operation inspection performed in the past. For example, it may be a value larger than the average value of the time by a predetermined ratio.
In addition, the threshold number of times may be a predetermined number of times determined in advance, or a number of times based on the number of times the operation condition data exceeds the threshold for inspection in the elevator operation inspection performed in the past. For example, it may be a value larger than the average value of the number of times by a predetermined ratio.
The operation condition data may be operation data when the elevator is operated or a difference between the operation data and ideal operation data, and the ideal operation data may be operation data obtained based on specifications of the elevator or operation data when the elevator is operated on trial.
The threshold for inspection may be determined based on the threshold for determining occurrence of a failure.
The elevator operation inspection method may further include: and a display step of, when the inspection position is specified, transmitting the inspection position to at least one of a mobile terminal of an inspector, a display unit of an elevator, and an inspection monitor to display the inspection position.
The elevator operation inspection method may further include: and a storage step of, when the inspection position is determined, storing the tracking data as historical operating data in association with a tracking condition, an operating condition, and the inspection position corresponding to the tracking data.
The elevator operation inspection method may further include: an inspection period determining step of estimating an interval time until a failure occurs from the aged change of the component related to the inspection position and the stored historical operation data, and determining an inspection period for the inspection position based on the interval time.
The elevator operation checking method can change the control parameters related to the operation of the elevator to enable the elevator to continue to operate when the checking position is determined and the elevator is in the operable state.
According to another aspect of the present invention, there is provided an elevator operation inspection apparatus comprising: a data monitoring unit that compares operating condition data indicating an operating condition of the elevator with an inspection threshold set to be smaller than a threshold for determining occurrence of a failure, thereby determining whether or not there is a tendency for the failure of the elevator to occur; a first communication unit that, when it is determined that there is a tendency for the elevator to malfunction, generates data relating to the malfunction to a management server, and receives a tracking condition based on the data relating to the malfunction from the management server and historical operation data during normal operation of the elevator corresponding to the tracking condition; an operation data acquisition unit that acquires tracking data during operation of the elevator based on the tracking condition; and an inspection position determination section that performs a process of determining an inspection position to be inspected by comparing the tracking data with the determined historical operation data.
According to still another aspect of the present invention, there is provided a management server connected to one or more of the above-described elevator operation inspection devices through a network, and including: a second communication unit that receives data relating to the failure from the elevator operation inspection device; and a control unit that estimates an inspection position based on data related to the failure to determine a tracking condition and historical operation data during normal operation of the elevator corresponding to the tracking condition, wherein the second communication unit transmits the determined tracking condition and the historical operation data to the elevator operation inspection device.
According to still another aspect of the present invention, there is provided an elevator control system including: one or more of the above-described elevator operation inspection devices; and the management server.
According to the present invention, inspection and maintenance work of an elevator system can be performed quickly and reliably.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way.
Fig. 1 is a schematic diagram showing the structure of an elevator and its control system.
Fig. 2 is a flowchart illustrating an elevator operation checking method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the structure of an elevator control system for performing an elevator operation check according to one embodiment of the present invention;
fig. 4 is a flowchart of the actions of the elevator operation inspection device according to one embodiment of the present invention;
FIG. 5 is a flowchart of the actions of a management server according to one embodiment of the invention;
fig. 6 is a schematic structural diagram of the power conversion device 14 according to the embodiment of the present invention.
Detailed Description
Embodiments and examples of the present invention will be described below with reference to the accompanying drawings. The detailed description of the embodiments and examples of the invention encompasses numerous specific details in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a clearer understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method steps set forth below, but rather covers any modification, substitution, or modification of relevant elements, components, and method steps without departing from the spirit of the invention.
Fig. 2 is a flowchart illustrating an elevator operation checking method according to an embodiment of the present invention. An elevator operation inspection method according to an embodiment of the present invention will be described below with reference to fig. 2.
The elevator operation inspection method according to the embodiment of the present invention monitors the operation data acquired from the elevator side (data monitoring step S1). In the data monitoring step S1, the operating condition data is compared with the threshold value for inspection to determine whether there is a tendency for a failure of the elevator.
Here, the threshold for inspection is set to be smaller than the threshold for determining the occurrence of a failure.
The operating condition data is data indicating the operating condition of the elevator. The operating condition data may be, for example, the operating data obtained from the elevator side or the difference between the operating data and the ideal operating data, but is not limited thereto.
The ideal operation data can be calculated based on the specifications of the elevator or adjusted to the optimum operation data by the trial operation of the elevator. The ideal operation data mentioned here is data under a certain operation condition, and the operation condition is different, and the ideal operation data is correspondingly different. For example, the ideal operation data may be data acquired under certain elevator operation conditions at the time of trial operation, for example, a series of operation data measured by adjusting the magnitude of the load of the car, and these operation data are stored. If the ideal operation data under a certain operation condition is not stored in advance, for example, when there is no ideal operation data with a load of 75% of the rated load, the ideal operation data with a load of 75% of the rated load can be found by averaging or interpolating based on the stored ideal operation data with loads of 70% and 80% of the rated load.
When the elevator operation inspection is performed, the data monitoring step S1 may be repeatedly performed every monitoring period. In the data monitoring step S1, the operation condition data is calculated based on the operation data obtained in real time, and it is checked whether or not the operation condition data exceeds the threshold value for inspection. If the operating condition data exceeds the threshold value for checking, whether the time for which the operating condition data exceeds the threshold value for checking is greater than a threshold time is monitored. Here, the time during which the operation condition data exceeds the inspection threshold may be a continuous excess time during which the operation condition data continuously exceeds the inspection threshold, or may be an accumulated excess time obtained by accumulating the time during which the operation condition data exceeds the inspection threshold. Can be appropriately selected as needed.
When the operating condition exceeds the threshold for inspection, the number of times the operating condition exceeds the threshold for inspection may be counted, and whether the number of times the operating condition exceeds the threshold number of times may be monitored.
The threshold time and the threshold number are set in advance to predetermined values. For example, the operation data or the operation conditions thereof may be acquired, and the type of the sensor 15 may be set in advance. For example, the threshold time or number of times for monitoring the inverter output current will necessarily be different than for monitoring brake actuation. Here, the threshold number of times may be 1 time. For example, since it is determined that there is a tendency for a failure even if a single occurrence of the brake signal or the opening/closing signal of the elevator door occurs, the threshold number of times is set to 1 in this case.
The monitoring period in which the data monitoring is performed once may be set to different set values depending on the object to be monitored. For example, when it is desired to monitor a sudden signal change, the monitoring period is set short, whereas if it is monitoring of a temperature change of the power conversion device or the motor, the monitoring period is set long.
Further, the determination of whether or not there is a tendency for the elevator to malfunction may be performed as follows.
If the time when the operation condition data exceeds the threshold value for inspection or the number of times when the operation condition data exceeds the threshold value for inspection tends to be significantly increased compared with the time or the number of times when data monitoring is performed in the past elevator operation inspection, it is judged that the elevator tends to have a failure. For example, the threshold time or the threshold number of times may be a value based on the time or the number of times the operating condition data exceeds the threshold for inspection in the elevator operation inspection performed in the past. For example, a value larger than the average value of the time or the number of times by a predetermined ratio may be set. Therefore, in the data monitoring step S1, when the time when the operation condition data exceeds the threshold value for inspection or the number of times when the operation condition data exceeds the threshold value for inspection exceeds a predetermined ratio of the average value, it is determined that there is a tendency that the elevator is out of order.
For example, the operation data is periodically acquired under the operation conditions in which the speed change is large, such as the start of the operation of the elevator, the stop of the operation, the completion of acceleration, and the start of deceleration, with respect to the state quantities such as the torque command, the motor speed, the brake signal, and the opening/closing signal of the elevator door. For example, the acquisition may be performed once per day or once per week, repeated periodically.
Taking a torque command and a motor speed as examples, operation data of the torque command and the motor speed is acquired and converted into operation condition data, and when the time or the number of times that each operation condition data exceeds each inspection threshold exceeds a predetermined ratio to the average value, it is determined that there is a tendency that the elevator is out of order. Here, the predetermined ratio may be set to one value of 20% to 30%, for example, although this is merely exemplary and not limiting.
In this way, when the elevator is judged to have a failure trend, whether the elevator has the failure trend is judged by examining whether the time that the running condition data exceeds the threshold value for inspection is greater than the threshold time or whether the frequency that the running condition data exceeds the threshold value for inspection is greater than the threshold frequency, so that noises such as accidental sudden changes of the running data can be eliminated, and the elevator inspection is more reliable.
When it is determined that there is a tendency for the elevator to malfunction, the routine proceeds to tracking determination step S2, where the inspection position is estimated based on the data relating to the malfunction, and the tracking condition and the historical operating data of the elevator during normal operation corresponding to the tracking condition are determined.
The tracking function is a function generally built in a power converter or an elevator controller (in the present invention, an elevator operation inspection device). The tracking function is a function of sampling the state of the elevator, tracking the set sampling data when a trigger condition (tracking start condition) occurs, and storing the tracking data as tracking data. The data to be sampled may be set plural.
In order to operate the trace function, it is necessary to set trace conditions, for example, a trigger condition (trace start condition), a sampling period, and data to be sampled (data to be traced).
The tracked data is preferably data useful for identifying a future occurrence of a failure. That is, one or more operational data associated with the anticipated failure is designated as the data to be tracked. Based on these operation data, a tracking condition and historical operation data in normal operation of the elevator corresponding to the tracking condition are determined.
The data related to the failure includes the operation data and the operation conditions acquired from the elevator side. In addition, the data related to the above-described failure may also include load conditions, temperature conditions, and the like, depending on the situation. The expected failure name may also be included.
When determining the tracking condition, the data relating to the failure may be compared with the historical operating data stored when the inspection position was determined in the past, and the tracking condition may be determined based on the similarity. Then, historical operating data corresponding to the tracking conditions is searched based on the tracking conditions.
Further, it is expected that a failure occurring in the future may be related to operation data of a plurality of different state quantities during the operation of the elevator. The tracking conditions and the historical operating data determined based on these operating data may also be tracking conditions and historical operating data for a plurality of different state quantities.
If the required trace data reaches a number equal to or more than the hardware limit, the change state of the operation data can be sufficiently grasped by tracking a plurality of times by using a specific operation data as a reference of the operation timing in common.
After the tracking condition is determined, the operation data acquisition step S3 is executed, that is, tracking data (tracked operation data) is acquired during the operation of the elevator based on the tracking condition.
After the trace data is obtained, a process of performing determination of the check position by comparing the trace data with the historical operation data determined in step S2 is performed (check position determining step S4).
If the check position is not determined, it is possible to return to step S2, determine a new tracking condition, and repeatedly perform the process of determining the check position.
Here, one or more inspection positions may be determined, as the case may be.
If one or more inspection locations are determined, the inspection locations are output. For example, the specified inspection position may be transmitted to at least one of the mobile terminal of the inspector, the display unit of the elevator, and the monitor for inspection, and displayed (step S5, corresponding to the display step of the present invention).
When the inspection position is specified, the tracking data at that time may be stored as historical operation data in association with the inspection position, the tracking conditions, and the operation conditions (step S6, corresponding to the storage step of the present invention).
Of course, the operational data obtained during normal operation of the elevator are also stored as historical operational data.
The operating conditions may be divided between driving and regeneration, between acceleration, constant speed and deceleration, or between speed and torque, so that the search is facilitated.
According to the above-described embodiment of the present invention, since the trace data is used at the time of the failure diagnosis, the inspection of the elevator can be performed quickly and reliably.
According to the above-described embodiment of the present invention, since the threshold value for inspection is set smaller than the threshold value for determining the occurrence of a failure, and the threshold value for inspection is used to determine whether or not there is a tendency for a failure of the elevator, and the inspection position is specified based on the determination, the inspection of the elevator can be performed more quickly and reliably.
According to the embodiment of the invention, the determined inspection position is output to the inspector, so that the inspector can perform targeted inspection, and the inspection of the elevator can be more rapid, reliable and convenient.
In addition, as an improvement of the elevator operation inspection method according to the above-described embodiment of the present invention, the method may further include an inspection time determining step of estimating an interval time until the failure occurs from a secular change of the component related to the inspection position and the stored historical operation data, and determining the inspection time for the inspection position based on the interval time.
If the inspection period is later than the next periodic inspection period, the inspector may be enabled to confirm the inspection position at the periodic inspection period.
In addition, as another improvement of the elevator operation inspection method according to the above-described embodiment of the present invention, it is also possible to change the control parameter related to the operation of the elevator to continue the operation of the elevator as necessary in a state where the inspection position is determined and the elevator is operable. The changeable control parameter can be e.g. a limit value for a torque command to the motor driving the elevator or a limit value for the maximum speed of the elevator etc. This makes it possible to eliminate the need for shutdown.
Next, a detailed description will be given of a specific example of the operation check of the elevator in the elevator control system with reference to fig. 3 to 5.
Fig. 3 shows the structure of an elevator and its control system according to one embodiment of the invention.
In fig. 3, the elevator 1 is a normal elevator similar to the elevator 1' described in the background art, and the description thereof is omitted here since the description has already been given in the background art.
As shown in fig. 3, the elevator control system includes an elevator running inspection device 2 of each elevator 1 and a management server 3 connected to the elevator running inspection device 2 through a network 4.
The elevator operation inspection device 2 monitors the operation of the elevator 1, and includes a processing control unit 21 and a communication unit 22 (corresponding to a first communication unit of the present invention).
The processing control section 21 includes an operation data acquisition section 211, a data monitoring section 212, and an inspection position determination section 213.
The operation data acquisition section 211 acquires various operation data from various sensors 15 provided at various components of the elevator. The operation data acquisition unit 211 also acquires operation data as tracking data during the elevator operation based on the tracking condition.
The data monitoring unit 212 compares the operation condition data indicating the operation condition of the elevator with the threshold value for inspection to determine whether or not the elevator tends to malfunction.
The inspection position determining unit 213 performs a process of determining an inspection position to be inspected by comparing the tracking data with the historical operation data.
The communication unit 23 communicates with the management server 3 side via the network 4. When there is a tendency for a failure of the elevator to occur, the communication unit 23 transmits data relating to the failure to the management server 3, and receives a tracking condition based on the data relating to the failure from the management server 3 and historical operation data of the elevator in normal operation corresponding to the tracking condition.
The elevator operation inspection device 2 may have a storage device for storing operation data acquired from the elevator 1 side, a threshold value for determining occurrence of a failure, an inspection threshold value, and historical operation data acquired from the management server 4 side, so that the processing control unit 21 performs various data processing. As shown in fig. 3, the memory may include a first storage part 231 and a second storage part 232, which store two object data to be calculated or compared, respectively. Of course, the first and second storage units 231 and 232 may be two storage areas of the storage device, or may be memories independent of each other.
The elevator operation inspection device 2 may transmit and store the tracking data, the tracking conditions, the operation conditions, and the inspection position to at least one of the management server 3 and the cloud deck 6 via the communication unit 23. The elevator operation inspection device 2 may transmit the inspection position to at least one of the mobile terminal 5 of the inspector, the display unit of the elevator, and the monitor for inspection, and display the inspection position.
Although not shown in the figure, the elevator operation inspection device 2 may further include a control parameter changing unit that changes a control parameter related to the operation of the elevator 1 to continue the operation of the elevator 1 in a state where the inspection position is determined and the elevator 1 is operable.
The management server 3 is installed in a management center, is connected to the elevator operation inspection devices 2 of one or more elevators 1 via the network 4, and manages operation data from the one or more elevator operation inspection devices 2. The management server 3 may store operation data from one or more elevator operation inspection devices 2 in its own memory as history inspection data, or may store the history inspection data in the cloud 6. These historical examination data may be stored in the form of the database 33, or may be stored in other forms, and the form is not particularly limited.
The management server 3 includes a communication section 31 (corresponding to a second communication section of the present invention) and a control section 32.
The communication unit 31 receives data relating to a failure from the elevator operation inspection device 2, and transmits tracking conditions and historical operation data determined based on the data to the elevator operation inspection device 2.
The control unit 32 estimates the fault position based on the data relating to the fault, and specifies the tracking condition and the historical operation data during normal operation of the elevator corresponding to the tracking condition.
In addition, the elevator control system may also comprise a mobile terminal 5, which mobile terminal 5 can be connected to the network 4 and has a display. The elevator service man can use the mobile terminal 5 when performing a running inspection of the elevator. For example, when the operation inspection of the elevator is performed, the inspection position stored in at least one of the management server 3 and the cloud deck 6 is downloaded to the mobile terminal 5 via the network 4 and displayed on the display, so that the operation inspection can be performed quickly in accordance with the prompt on the display. Of course, the mobile terminal 5 may receive the specified one or more inspection positions from the elevator operation inspection device 2 via the network 4, and the inspector having the mobile terminal 5 may quickly and accurately perform the inspection based on the received information.
Although not shown in the figure, the management server 3 may further include an inspection timing determination unit that estimates an interval time until a failure occurs from the chronological change of the component related to the inspection position and the stored historical operation data, and determines the inspection timing for the inspection position based on the interval time.
Fig. 4 is a schematic diagram of the operation of the elevator operation inspection device 2 according to one embodiment of the present invention. Next, the operation of the elevator operation inspection device 2 will be described with reference to fig. 4.
It is assumed here that data monitoring is repeatedly performed N times at a predetermined monitoring cycle in one elevator running inspection, where N is an integer of 1 or more.
In the primary data monitoring, the operation data acquiring section 211 acquires control data in one monitoring cycle, such as a torque command indicating an operation condition of the elevator, or signals or data from various sensors 15 provided at various parts of the elevator as operation data, and stores the acquired various operation data in the first storage section 231 (S101).
The data monitoring unit 212 generates the acquired operation data as operation condition data, and compares the operation condition data with an inspection threshold to determine whether there is a tendency for a failure of the elevator (S102). The inspection threshold is stored in the second storage unit 232 in advance. Specifically, the operation condition data in one monitoring period is successively compared with the threshold value for inspection, the number of times that the operation condition data exceeds the threshold value for inspection is counted, if the counted value is greater than the threshold number of times, it is determined that there is a tendency that the elevator is in failure, otherwise, it is determined that there is no tendency. Here, the number of times the operation condition data exceeds the threshold for inspection is counted, but the time when the operation condition data exceeds the threshold for inspection may be counted.
If there is no tendency of the elevator to malfunction (S102: NO), the process returns to step S101, and the next data monitoring operation is executed until the data monitoring is executed N times (S109, S110), or it is judged that there is a tendency of the elevator to malfunction.
If there is a tendency for a failure to occur in the elevator (S102: YES), the communication unit 22 transmits the data relating to the failure acquired in step S101 to the management server 3 via the network 4 (S103). Here, the data related to the failure includes at least the operation data and the operation condition related to the failure.
Next, the communication unit 22 receives the tracking condition determined based on the data on the failure and the historical operation data during normal operation of the elevator corresponding to the tracking condition from the management server 3, and stores the tracking condition and the historical operation data in the second storage unit 232 (S104).
The operation data acquiring unit 211 acquires one or more tracking data during the operation of the elevator based on the tracking conditions, and stores the one or more tracking data in the first storage unit 231 (S105).
The inspection position determining part 213 compares the trace data stored in the first storage part 231 with the historical operation data stored in the second storage part 232 corresponding thereto (S106). When the deviation degree of the tracking data from the historical operation data exceeds a threshold value, it is determined that there is a position to be checked (S107: YES). The threshold value here may be set to be smaller than the threshold value for determining occurrence of a failure.
If the degree of deviation does not exceed the threshold value, it is considered that there is no position to be checked (S107: NO), the process returns to step S104, requests the management server 3 to transmit the next candidate tracking condition and the historical operating data corresponding to the tracking condition, and repeats the determination of the checking position (S105 and the subsequent steps).
When the inspection position to be inspected is specified (yes in S107), the elevator operation inspection device 2 may transmit the inspection position to at least one of the mobile terminal of the inspector, the display unit of the elevator, and the inspection monitor to display the inspection position (S108), so that the inspector can confirm the displayed inspection position and perform the inspection with pertinence. For example, the inspection position may be transmitted to the mobile terminal 5 through the network 4 by the communication unit 33, or the inspection position may be transmitted to a display unit of an elevator, an inspection monitor, or the like by the processing control unit 21.
Further, although not shown, after step S108, the elevator operation inspection device 2 may continue the operation of the elevator in consideration of changing the control parameter related to the operation of the elevator in a state where the inspection position is determined and the elevator is operable. The changeable control parameter can be e.g. a limit value for a torque command to the motor driving the elevator or a limit value for the maximum speed of the elevator etc. This makes it possible to eliminate the need for shutdown.
Fig. 5 is a schematic diagram of the action of the management server 3 according to one embodiment of the present invention. Next, the operation of the management server 3 will be described with reference to fig. 5.
The operation of the management server 3 is started when the communication unit 31 receives operation data from the elevator operation inspection device 2.
The communication unit 31 of the management server 3 receives data relating to a failure from the elevator operation inspection device 2 (S201). The control unit 32 estimates a failure that is expected to occur in the future based on the data related to the failure, searches the database 33 or the cloud disk 6 for corresponding historical operating data based on the data related to the failure, and determines a tracking condition based on the historical operating data and the operating condition (S202). For example, the management server 3 determines similarity to data relating to a failure using past historical inspection data when the inspection position was specified. And, estimating a fault location based on the similarity, and determining a tracking condition and historical operating data corresponding to the tracking condition.
Here, when the management server 3 connects a plurality of elevators and stores historical operation data of the plurality of elevators, it is possible to search not only historical operation data of the same elevator but also historical operation data of other elevators having the same or similar specifications. In addition, the management server 3 may also be configured to store history data, and learn the stored history data to grasp the relationship between each failure and the operation data showing an abnormality.
Next, the communication unit 31 transmits the determined tracking condition and the corresponding historical operation data to the elevator operation inspection device 2 (S203).
Then, the communication unit 31 determines whether or not there is a request for transmission of the tracking condition and the historical operation data from the elevator operation inspection device 2 (S204), and if there is a request (yes in S204), the processing returns to step S202, and the control unit 32 selects the next candidate and repeats the determination and transmission of the tracking condition (S202, S203). If there is no request (S204: No), the process ends.
One embodiment of the present invention has been described above. According to the present embodiment, the same advantageous effects as those of the above-described embodiment can be obtained.
In addition, the embodiment according to the present invention described above has the following effects: the elevator operation inspection device on the elevator side communicates with the management server for operation data and the like, so that the position to be inspected can be locked by using the stored historical operation data, and therefore, the inspection operation of the elevator can be performed more quickly and reliably. In addition, when the management server 3 connects a plurality of elevators and stores the historical inspection data of the plurality of elevators, the failure location is estimated using not only the historical inspection data of the same elevator but also the historical inspection data of other elevators having the same or similar specifications.
In the above embodiment, the tracking determination process for determining the tracking condition is executed by the management server, but may be executed by the elevator operation inspection device. The inspection position determination process for determining the inspection position to be inspected is executed in the elevator operation inspection apparatus, but may be executed in the management server.
In this embodiment, an example in which the elevator operation inspection method according to the present invention is implemented in an elevator control system including an elevator operation inspection device and a management server is shown, but the elevator operation inspection method according to the present invention may be implemented only in the elevator operation inspection device.
As described above, the specific location where each process of the elevator operation check according to the present invention is performed is not limited, and the assignment may be performed appropriately in consideration of hardware conditions and the like.
Next, with reference to fig. 6, a description will be given taking an example of a case where the dc voltage of the main circuit in the power conversion device 14 is abnormal. Fig. 6 is a schematic structural diagram of the power conversion device 14 according to the embodiment of the present invention.
As shown in fig. 6, the power conversion device 14 includes a rectifier that converts ac power of a commercial power supply into dc power according to a predetermined setting, an inverter that converts the converted dc power into ac power and supplies the ac power to a motor, and a dc main circuit capacitor that smoothes the dc power output from the rectifier. The sensor (i.e., voltage detection circuit) 15 detects the voltage of the capacitor of the main circuit.
In the elevator operation inspection device 2, the operation data acquisition unit 211 of the processing control unit 21 acquires the dc voltage value detected by the sensor 15, and stores the dc voltage value in the second storage unit 232. The first storage unit 231 stores a threshold value for inspection, which can be determined based on the overvoltage threshold value, and can be set to a value of 80% or 90% of the overvoltage threshold value, for example. The data monitoring unit 212 compares the dc voltage value stored in the second storage unit 232 with the inspection threshold value stored in the first storage unit 231. If the dc voltage value continues to be larger than the threshold value for inspection for a certain period of time, the elevator operation control device 2 transmits data relating to the failure to the management server 3 via the communication unit 22. The control unit 32 of the management server 3 refers to the historical operation data in the database 33, estimates a cause that may be a sudden change in the deceleration rate and an increase in the regenerative energy, sets the actual speed and torque command as a state quantity to be tracked (data to be tracked), sets a corresponding tracking condition, and transmits the set tracking condition to the elevator operation control device 2 together with the historical operation data corresponding to the tracking condition.
The operation data acquisition unit 211 of the processing control unit 21 tracks the actual speed and the torque command during the operation of the elevator 1, acquires the tracking data, and determines the inspection position by comparing the tracking data with the corresponding history operation data. If the checking position cannot be determined, feedback is made to the management server 3, the management server 3 estimates the sudden deceleration of the motor possibly caused by the holding of the brake, thereby determining a brake signal as a tracking object, setting a tracking condition, searching corresponding historical operation data, and sending the historical operation data to the elevator operation checking device 2.
The elevator operation inspection device 2 repeatedly determines the inspection position after receiving the new tracking condition and the historical operation data.
In the above embodiment, the management server transmits the tracking conditions and the corresponding historical operation data in response to a request from the elevator operation inspection device, but the management server may prioritize a plurality of sets of tracking conditions and corresponding historical operation data determined based on data related to a failure and transmit the prioritized plurality of sets of tracking data and corresponding historical operation data to the elevator operation inspection device at a time, and the elevator operation inspection device may determine the inspection position in accordance with the priority order.
In addition, in a modification of the above embodiment, when the elevator operation inspection device 2 determines in step S107 that there is a position to be inspected, the management server 3 may be further requested to transmit a next candidate tracking condition and historical operation data corresponding to the operation condition of the tracking condition in order to lock operation data, which is a trigger for the tracking data to deviate from the historical operation data, without further narrowing the inspection position, as necessary, and the inspection position may be repeatedly specified.
While the embodiments and examples of the present invention have been described in conjunction with the accompanying drawings, it will be understood by those skilled in the art that various modifications and variations may be made without departing from the spirit of the invention, and such modifications and variations are to be considered within the scope of the invention. The scope of the invention is defined by the claims rather than the embodiments.
Claims (21)
1. An elevator operation inspection method, comprising:
a data monitoring step of comparing operation condition data indicating the operation condition of the elevator with an inspection threshold set to be smaller than the threshold for determining the occurrence of the failure, to determine whether there is a tendency of the failure of the elevator;
a tracking determination step of determining a tracking condition and historical operation data corresponding to the tracking condition when the elevator is judged to have a tendency of failure based on data related to the failure;
an operation data acquisition step of acquiring tracking data in the operation of the elevator based on the tracking condition; and
an inspection position determining step of performing a process of determining an inspection position to be inspected by comparing the tracking data with the determined historical operating data.
2. The elevator operation inspection method according to claim 1,
in the data monitoring step, it is determined that the elevator is likely to malfunction when the time during which the operation condition data exceeds the inspection threshold is longer than a threshold time or the number of times when the operation condition data exceeds the inspection threshold is longer than a threshold number of times.
3. The elevator operation inspection method according to claim 2,
the threshold time is a predetermined time determined in advance, or is a time based on a time when the operation condition data exceeds the threshold value for inspection in the elevator operation inspection performed in the past;
the threshold number of times is a predetermined number of times determined in advance or a number of times that the operation condition data exceeds the threshold for inspection in the elevator operation inspection performed in the past.
4. The elevator operation inspection method according to any one of claims 1 to 3,
the operation condition data is operation data when the elevator is operated or a difference between the operation data and ideal operation data, and the ideal operation data is operation data obtained based on the specification of the elevator or operation data when the elevator is in trial operation.
5. The elevator operation inspection method according to any one of claims 1 to 3,
the threshold value for inspection is determined based on the threshold value for determining occurrence of a failure.
6. The elevator operation inspection method according to any one of claims 1 to 3,
further comprising: and a display step of, when the inspection position is specified, transmitting the inspection position to at least one of a mobile terminal of an inspector, a display unit of an elevator, and an inspection monitor to display the inspection position.
7. The elevator operation inspection method according to any one of claims 1 to 3, further comprising: and a storage step of, when the inspection position is determined, storing the tracking data as historical operating data in association with the tracking condition, operating condition and inspection position corresponding to the tracking data.
8. The elevator operation inspection method according to claim 7, further comprising: an inspection period determining step of estimating an interval time until a failure occurs from the aged change of the component related to the inspection position and the stored historical operation data, and determining an inspection period for the inspection position based on the interval time.
9. The elevator operation inspection method according to any one of claims 1 to 3,
and changing a control parameter related to the operation of the elevator to enable the elevator to continue to operate in a state where the inspection position is determined and the elevator is operable.
10. An elevator operation inspection device, comprising:
a data monitoring unit that compares operating condition data indicating an operating condition of an elevator with an inspection threshold set to be smaller than a threshold for determining occurrence of a failure, thereby determining whether or not the elevator tends to fail;
a first communication unit that, when it is determined that there is a tendency for the elevator to malfunction, transmits data relating to the malfunction to a management server, and receives a tracking condition based on the data relating to the malfunction from the management server and historical operation data during normal operation of the elevator corresponding to the tracking condition;
an operation data acquisition unit that acquires tracking data during operation of the elevator based on the tracking condition; and
and an inspection position specifying unit configured to perform a process of specifying an inspection position to be inspected by comparing the tracking data with the specified historical operation data.
11. The elevator operation inspection device according to claim 10,
when the time when the operation condition data exceeds the inspection threshold is longer than a threshold time or the number of times when the operation condition data exceeds the inspection threshold is longer than a threshold number of times, the data monitoring unit determines that the elevator tends to have a failure.
12. The elevator operation inspection device according to claim 11,
the threshold time is a predetermined time or a time based on a time when the operation condition data exceeds the threshold value for inspection in the elevator operation inspection performed in the past;
the threshold number of times is a predetermined number of times determined in advance or a number of times that the operation condition data exceeds the threshold for inspection in the elevator operation inspection performed in the past.
13. The elevator operation inspection device according to any one of claims 10 to 12,
the operation condition data is operation data when the elevator is operated or a difference between the operation data and ideal operation data, and the ideal operation data is operation data obtained based on the specification of the elevator or operation data when the elevator is in trial operation.
14. The elevator operation inspection device according to any one of claims 10 to 12,
the threshold value for inspection is determined based on the threshold value for determining occurrence of a failure.
15. The elevator operation inspection device according to any one of claims 10 to 12,
further comprising: and a control parameter changing unit that changes a control parameter relating to the operation of the elevator to continue the operation of the elevator in a state where the inspection position is determined and the elevator is operable.
16. The elevator operation inspection apparatus according to any one of claims 10 to 12, wherein when the inspection position is determined, the communication unit transmits the tracking data as historical operation data to at least one of the management server and the cloud deck together with the tracking condition, the operation condition, and the inspection position corresponding to the tracking data to store the tracking data.
17. A management server connected to one or more elevator operation inspection apparatuses according to any one of claims 10 to 16 through a network, comprising:
a second communication unit that receives data relating to the failure from the elevator operation inspection device; and
a control unit for estimating the inspection position based on the data related to the fault to determine a tracking condition and historical operation data corresponding to the tracking condition when the elevator is normally operated,
the second communication unit transmits the determined tracking condition and the historical operation data to the elevator operation inspection device.
18. An elevator control system, comprising:
one or more elevator operation inspection devices of any of claims 10 to 16; and
the management server of claim 17.
19. The elevator control system according to claim 18, wherein when the inspection position is determined, the elevator operation inspection device transmits the tracking data as historical operation data to at least one of the management server and a cloud disk together with a tracking condition, an operation condition, and the inspection position corresponding to the tracking data to store.
20. Elevator control system according to claim 18 or 19,
further comprising: a mobile terminal capable of connecting to the network and having a display;
the mobile terminal downloads the inspection location stored in at least one of the management server and the cloud deck via the network when performing an operation inspection of the elevator, or receives the inspection location from the elevator operation inspection device via the network and displays the inspection location on the display.
21. The elevator control system according to claim 18 or 19, wherein the management server further includes an inspection period determination section that estimates an interval time until a failure occurs from a change over time of a component related to the inspection position and the stored historical operation data, and determines an inspection period for the inspection position based on the interval time.
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| CN201710091665.1A CN108455394B (en) | 2017-02-20 | 2017-02-20 | Elevator operation inspection method and device, management server and elevator control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710091665.1A CN108455394B (en) | 2017-02-20 | 2017-02-20 | Elevator operation inspection method and device, management server and elevator control system |
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| CN108455394B true CN108455394B (en) | 2020-07-21 |
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| CN112777443A (en) * | 2021-02-07 | 2021-05-11 | 猫岐智能科技（上海）有限公司 | Elevator operation evaluation method, device and computer readable medium |
| CN117794836A (en) * | 2021-08-17 | 2024-03-29 | 三菱电机楼宇解决方案株式会社 | Data acquisition system for elevator |
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| CN101362568A (en) * | 2007-08-10 | 2009-02-11 | 东芝电梯株式会社 | Elevator abnormity diagnostic system |
| CN101531308A (en) * | 2008-03-13 | 2009-09-16 | 三菱电机株式会社 | Abnormity detection device for elevator |
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| CN105947819A (en) * | 2016-05-23 | 2016-09-21 | 西人马（厦门）科技有限公司 | Elevator fault diagnosis device and method and controller |
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| CN105246810A (en) * | 2013-03-22 | 2016-01-13 | 奥的斯电梯公司 | Computer system and control method |
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| CN101362568A (en) * | 2007-08-10 | 2009-02-11 | 东芝电梯株式会社 | Elevator abnormity diagnostic system |
| CN101531308A (en) * | 2008-03-13 | 2009-09-16 | 三菱电机株式会社 | Abnormity detection device for elevator |
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Effective date of registration: 20230721 Address after: Fukuoka Prefecture Patentee after: Kabushiki Kaisha YASKAWA DENKI Patentee after: YASKAWA ELECTRIC (CHINA) Co.,Ltd. Address before: Fukuoka Prefecture Patentee before: Kabushiki Kaisha YASKAWA DENKI |