CN115397759A

CN115397759A - Monitoring system for elevator and elevator system

Info

Publication number: CN115397759A
Application number: CN202080098438.1A
Authority: CN
Inventors: 井村卓矢
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2022-11-25
Anticipated expiration: 2040-04-24
Also published as: JP6989069B1; CN115397759B; TWI761063B; JPWO2021214987A1; WO2021214987A1; TW202140364A

Abstract

Provided are an elevator monitoring system and an elevator system capable of predicting a failure when the possibility of failure is high. An elevator system (1) is provided with a monitoring system (3) and an elevator (2). An elevator (2) is provided with a plurality of cells (5) and a control unit (6). Each unit (5) comprises a car (7). A control unit (6) manages call assignment to the plurality of cells (5). The monitoring system (3) is provided with a collection unit (14) and a prediction unit (15). When failure information is received from a first unit of the plurality of units (5), a collection unit (14) collects diagnostic data of a second unit of the plurality of units (5) that does not transmit failure information. When the collection unit (14) collects the diagnostic data of the second unit, the prediction unit (15) predicts a failure of the second unit based on the diagnostic data.

Description

Monitoring system for elevator and elevator system

Technical Field

The present invention relates to a monitoring system for an elevator and an elevator system.

Background

Patent document 1 discloses an example of a system for collecting data from an elevator apparatus. The system predicts a failure period of the elevator installation based on the collected data.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2009-40585

Disclosure of Invention

Problems to be solved by the invention

However, the system of patent document 1 collects data periodically. Therefore, the failure prediction based on the collected data is performed at a fixed frequency regardless of the possibility of occurrence of a failure.

The present invention has been made to solve the above problems. The invention provides a monitoring system of an elevator and an elevator system, which can predict faults when the possibility of faults is high.

Means for solving the problems

The present invention provides a monitoring system of an elevator, which comprises the following components: a collecting unit that collects, in an elevator having a plurality of cells each including a car, diagnostic data of a second cell that does not transmit failure information among the plurality of cells when failure information is received from a first cell among the plurality of cells; and a prediction unit that predicts a failure of the second unit based on the diagnostic data when the diagnostic data of the second unit is collected by the collection unit.

The present invention provides an elevator system, which comprises: a control unit that manages call assignment to a plurality of cells in an elevator having the plurality of cells each including a car; a collecting unit that collects, when failure information is received from a first unit of the plurality of units, diagnostic data of a second unit that has not transmitted failure information of the plurality of units; and a prediction unit that predicts a failure of the second unit based on the diagnostic data when the diagnostic data of the second unit is collected by the collection unit.

Effects of the invention

In the monitoring system or the elevator system according to the present invention, it is possible to predict a failure when the possibility of a failure occurring in an elevator is high.

Drawings

Fig. 1 is a configuration diagram of an elevator system according to embodiment 1.

Fig. 2 is a diagram showing an example of information stored in the storage device according to embodiment 1.

Fig. 3 is a diagram showing an example of failure prediction by the monitoring system of embodiment 1.

Fig. 4 is a diagram showing an example of failure prediction by the monitoring system of embodiment 1.

Fig. 5 is a diagram showing an example of failure prediction by the monitoring system of embodiment 1.

Fig. 6 is a flowchart showing an example of the operation of the monitoring system according to embodiment 1.

Fig. 7 is a hardware configuration diagram of a main part of an elevator system according to embodiment 1.

Detailed Description

A mode for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and overlapping description is appropriately simplified or omitted.

Embodiment mode 1

Fig. 1 is a configuration diagram of an elevator system 1 according to embodiment 1.

The elevator system 1 includes an elevator 2 and a monitoring system 3.

The elevator 2 is applied to a building having a plurality of floors, for example. In a building, a hoistway 4 of an elevator 2 is provided. The hoistway 4 is a vertically long space that spans a plurality of floors. The elevator 2 includes a plurality of cells 5 and a control unit 6.

Each unit 5 includes a car 7. The car 7 is a device that transports a user or the like between a plurality of floors by traveling in the vertical direction in the hoistway 4. In this example, each unit 5 includes a main rope 8, a hoisting machine 9, a counterweight 10, and a control panel 11. The main ropes 8 are ropes that support the load of the car 7 in the hoistway 4. A main rope 8 is wound around the hoisting machine 9. The hoisting machine 9 is a device that causes the elevator car 7 to travel by hoisting the main ropes 8 and the like. The counterweight 10 is a device that balances the load applied to the main ropes 8 on both sides of the hoisting machine 9 with the car 7. The control panel 11 is a part for controlling the operation of the unit 5. The operation of the unit 5 controlled by the control panel 11 includes, for example, the running of the car 7. In this example, the control panel 11 has a function of detecting occurrence of a failure in the unit 5. The control panel 11 transmits failure information when detecting the occurrence of a failure. The failure information is information indicating that a failure has occurred in the unit 5. The failure information contains information that identifies the unit 5 in which the failure has occurred. The control panel 11 has a function of acquiring diagnostic data in the unit 5. The diagnostic data is data used for failure prediction in the unit 5. The diagnostic data includes information on the car 7 such as the position, speed, and load weight of the car 7, information on the operation of the hoisting machine 9, information on the state of guide rails for guiding the travel of the car 7 and the counterweight 10, and the like.

The control unit 6 controls the operation of the elevator 2. The operation control by the control unit 6 includes, for example, management of calls assigned to the plurality of cells 5. The call managed by the control unit 6 is, for example, a hall call or the like registered by a user at a hall of the elevator 2. The control section 6 assigns a hall call registered by a user to any one of the plurality of cells 5, for example. The control panel 11 of the call-assigned means 5 causes the car 7 to travel in response to the call.

The monitoring system 3 includes a monitoring server 12 and a storage device 13.

The monitoring server 12 is a server device that monitors the state of the elevator 2. The monitoring server 12 is installed, for example, at a remote location of a building in which the elevator 2 is installed. The monitoring server 12 is connected to the elevator 2 via a communication network, such as the internet or a telephone line. The monitoring server 12 includes a collection unit 14, a prediction unit 15, and a notification unit 16.

The collection unit 14 is a part that collects diagnostic data from each unit 5 of the elevator 2. The collecting unit 14 transmits a request signal requesting diagnostic data to each unit 5, for example. The collecting unit 14 collects the diagnostic data transmitted as a response to the request signal from each unit 5. Here, information such as diagnostic data and failure information transmitted from each unit 5 to the collection unit 14 may be relayed by the control unit 6, for example. In a normal state, the collection unit 14 may periodically transmit a request signal.

The prediction unit 15 is a part that predicts a failure of each unit 5 of the elevator 2. The result of the failure prediction by the prediction unit 15 includes the presence or absence of a failure. The result of the failure prediction may include information such as the time when the failure is predicted to occur and the type of failure predicted to occur.

The notification unit 16 is a part that notifies the control unit 6 when the prediction unit 15 predicts that a failure will occur in any of the units 5. The notification unit 16 may notify the control unit 6, for example, by including the result of the failure prediction by the prediction unit 15.

The storage device 13 is a device that stores information. The storage device 13 stores fault information transmitted from, for example, any unit 5 of the elevator 2. The storage device 13 stores, for example, diagnostic data transmitted from each unit 5 of the elevator 2. The storage device 13 stores the result of the failure prediction performed by the prediction unit 15. The storage means 13 stores classification information based on blocks of the elevator 2. The block of the elevator 2 is a category that includes some or all of the plurality of cells 5. The block of the elevator 2 includes, for example, a cell 5 whose operation start time is close among the plurality of cells 5. Alternatively, the block of the elevator 2 may include, for example, a cell 5 or the like which is installed at a close position among the plurality of cells 5. The storage device 13 may also be part of the monitoring server 12.

Next, an example of information stored in the storage device 13 will be described with reference to fig. 2.

Fig. 2 is a diagram showing an example of information stored in the storage device 13 according to embodiment 1.

In fig. 2, information of blocks of the elevator 2 stored in the storage device 13 is shown. In this example, the storage device 13 stores the cell 5A, the cell 5B, and the cell 5C as the cell 5 included in the same block.

Next, an example of failure prediction performed by the monitoring system 3 will be described with reference to fig. 3 to 5.

Fig. 3 to 5 are diagrams showing examples of failure prediction performed by the monitoring system 3 according to embodiment 1.

As shown in fig. 3, for example, when a failure occurs in the unit 5B, the control panel 11 of the unit 5B transmits failure information to the collection unit 14 of the monitoring server 12. The collecting unit 14 determines that the cell 5 as the transmission source is the cell 5B based on the received failure information.

The storage device 13 stores the failure information transmitted from the unit 5B.

As shown in fig. 4, the collection unit 14 of the monitoring server 12 that has received the failure information from any unit 5 collects diagnostic data from another unit 5 included in the same block as that unit 5. In this example, the collection unit 14 collects diagnostic data from the cells 5A and 5C included in the same block as the cell 5B.

The prediction unit 15 predicts the failure of each cell 5 based on the diagnostic data collected by the collection unit 14. In this example, the collecting unit 14 predicts the failure of each of the unit 5A and the unit 5C.

The storage device 13 stores the diagnostic data transmitted from the units 5A and 5C. In addition, the storage device 13 stores the results of the failure prediction regarding the cells 5A and 5C.

As shown in fig. 5, when the prediction unit 15 predicts that a failure will occur with respect to any unit 5, the notification unit 16 notifies the control unit 6. In this example, the prediction section 15 predicts that the cell 5A will fail. At this time, the notification unit 16 notifies the control unit 6 of the failure prediction result of the unit 5A predicted to have failed.

The control unit 6 determines the cell 5 in which the failure is predicted as the cell 5A based on the notification from the notification unit 16. The control unit 6 controls the operation of the elevator 2 so that a call is assigned to a cell 5C for which a failure is not predicted, with priority over a cell 5 for which a failure is predicted. For example, when both of the cell 5A and the cell 5C can be assigned, the control unit 6 controls the operation of the elevator 2 so that a call is assigned to the cell 5C. Alternatively, the control section 6 may control the operation of the elevator 2 so that calls are not assigned to the cell 5 for which a failure is predicted, for example, when there is a margin in the number of cells 5 to which calls are assigned.

Alternatively, the control unit 6 may present, for example, to the user of the elevator 2, a case where no failure is predicted with respect to the cell 5C. The presentation to the user may be performed by a landing display panel, a hall lantern, or the like, for example. The control unit 6 may notify, for example, a manager of the elevator 2 of a situation in which a failure is predicted for the cell 5A.

Here, the unit 5B that has transmitted the failure information is an example of the first unit. The unit 5A that does not transmit the failure information is an example of the second unit. The unit 5C that does not transmit the failure information and has not predicted the occurrence of the failure is an example of the third unit.

Next, an operation example of the monitoring system 3 will be described with reference to fig. 6.

Fig. 6 is a flowchart showing an example of the operation of the monitoring system 3 according to embodiment 1.

In step ST1, the collecting unit 14 determines whether or not failure information is received from any of the units 5. If the determination result is yes, the operation of the monitoring system 3 proceeds to step ST2. If the determination result is "no", the operation of the monitoring system 3 proceeds to step ST1 again.

In step ST2, the collection unit 14 identifies the unit 5 that has received the failure information. The collection unit 14 reads information of the block of the specified cell 5 from the storage device 13. After that, the operation of the monitoring system 3 proceeds to step ST3.

In step ST3, the collection unit 14 determines whether or not the collection of the diagnostic data is completed for the read block. For example, when diagnostic data is collected for all cells 5 that have not transmitted failure information among the cells 5 included in the read block, the collection unit 14 determines that the collection of diagnostic data is complete. If it is determined that the collection of the diagnostic data is not completed, the operation of the monitoring system 3 proceeds to step ST4. When it is determined that the collection of the diagnostic data is completed, the operation of the monitoring system 3 is ended.

In step ST4, the collection unit 14 collects diagnostic data from any unit 5 that has not collected diagnostic data among the units 5 that have not transmitted failure information included in the read block. After that, the operation of the monitoring system 3 proceeds to step ST5.

In step ST5, the prediction unit 15 predicts a failure based on the diagnostic data for the unit 5 that has collected the diagnostic data. After that, the operation of the monitoring system 3 proceeds to step ST6.

In step ST6, the notification unit 16 determines whether or not the prediction unit 15 predicts the occurrence of a failure for the unit 5 that has performed the failure prediction. If the determination result is yes, the operation of the monitoring system 3 proceeds to step ST7. If the determination result is "no", the operation of the monitoring system 3 proceeds to step ST3.

In step ST7, the notification section 16 notifies the control section 6 of the prediction result of the unit 5 in which the prediction section 15 predicts that a failure will occur. After that, the operation of the monitoring system 3 proceeds to step ST3.

The storage device 13 may store information of a plurality of blocks. The plurality of blocks may also contain units 5 that repeat one another.

As described above, the elevator system 1 according to embodiment 1 includes the monitoring system 3 and the elevator 2. The elevator 2 includes a plurality of cells 5 and a control unit 6. Each cell 5 includes a car 7. The control unit 6 manages call assignment to the plurality of cells 5. The monitoring system 3 includes a collection unit 14 and a prediction unit 15. When receiving the failure information from the first unit of the plurality of units 5, the collecting unit 14 collects the diagnostic data of the second unit of the plurality of units 5 that has not transmitted the failure information. When the collection unit 14 collects the diagnostic data of the second unit, the prediction unit 15 predicts a failure of the second unit based on the diagnostic data.

In the elevator 2, a plurality of cells 5 may start operating at the same time. At this time, a failure due to aging or the like, for example, may occur at a close timing between the units 5 close to each other at the start of operation. In the elevator 2, the cells 5 located close to each other are similarly affected by an earthquake or the like. Therefore, a failure caused by the influence of an earthquake or the like can be generated at the timing of approach between the units 5 whose installation positions are close to each other. As described above, when a failure occurs in any of the units 5, there is a high possibility that a similar failure occurs in the other units 5. The monitoring system 3 collects diagnostic data of other cells 5 of the elevator 2 when a failure occurs in any cell 5 of the elevator 2, and therefore can predict a failure when the possibility of a failure occurring in the elevator 2 is high. This makes it possible to predict the occurrence of a failure in the elevator 2 and prevent the failure from being detected in advance.

The monitoring system 3 further includes a storage device 13. The storage device 13 stores the failure information transmitted from any of the plurality of units 5 and the diagnostic data of each unit 5 collected by the collection unit 14.

Since the storage device 13 stores diagnostic data and the like, the monitoring system 3 can observe changes over time and the like of the unit 5. The prediction unit 15 may predict the failure by using the past diagnostic data stored in the storage device 13 as well. In this case, the prediction unit 15 can more accurately predict the failure.

The monitoring system 3 further includes a notification unit 16. The notification unit 16 notifies the control unit 6 when the prediction unit 15 predicts the occurrence of the failure of the second unit.

When receiving the notification from the notification unit 16, the control unit 6 assigns a call to a third cell, which is not predicted to have a failure, of the plurality of cells 5, with priority over the second cell.

The control unit 6 can acquire information about which unit 5 predicts the occurrence of the failure. Thus, the control unit 6 can manage the operation of the elevator 2 based on the prediction result of the occurrence of the failure. The control unit 6 can make the user use the cells 5 in a good state by suppressing the use of the cells 5 for which the occurrence of a failure is predicted. Further, the control unit 6 can present the unit 5, in which the occurrence of the failure is not predicted, to the user. Thus, since the user can be notified that at least one of the cells 5 is in a good state, the control unit 6 can provide a sense of security to the user of the elevator 2.

Next, an example of the hardware configuration of the elevator system 1 will be described with reference to fig. 7.

Fig. 7 is a hardware configuration diagram of a main part of the elevator system 1 according to embodiment 1.

The functions of the elevator system 1 can be implemented by means of a processing circuit. The processing circuit is provided with at least one processor 100a and at least one memory 100b. The processing circuit may include at least one dedicated hardware 200 together with the processor 100a and the memory 100b, or may include at least one dedicated hardware 200 instead of the processor 100a and the memory 100b.

In the case of a processing circuit provided with a processor 100a and a memory 100b, the functions of the elevator system 1 are implemented by software, firmware or a combination of software and firmware. At least one of the software and the firmware is described as a program. The program is stored in the memory 100b. The processor 100a reads out and executes the program stored in the memory 100b, thereby realizing each function of the elevator system 1.

The processor 100a is also called a CPU (Central Processing Unit), a Processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP. The memory 100b is constituted by a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM.

In the case where the processing circuit includes the dedicated hardware 200, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

The functions of the elevator system 1 can be implemented by the processing circuits, respectively. Alternatively, the functions of the elevator system 1 can be realized by the processing circuit in a unified manner. For each function of the elevator system 1, a part may be implemented by dedicated hardware 200 and the other part may be implemented by software or firmware. In this way the processing circuit realizes the functions of the elevator system 1 by means of dedicated hardware 200, software, firmware or a combination thereof.

Industrial applicability

The elevator system of the present invention can be applied to a building having a plurality of floors. The monitoring system of the present invention can be applied to failure prediction of an elevator.

Description of the reference symbols

1: an elevator system; 2: an elevator; 3: a monitoring system; 4: a hoistway; 5. 5A, 5B, 5C: a unit; 6: a control unit; 7: a car; 8: a main rope; 9: a traction machine; 10: a counterweight; 11: a control panel; 12: a monitoring server; 13: a storage device; 14: a collecting section; 15: a prediction unit; 16: a notification unit; 100a: a processor; 100b: a memory; 200: dedicated hardware.

Claims

1. A monitoring system for an elevator, comprising:

a collection unit that collects, in an elevator having a plurality of cells each including a car, diagnostic data of a second cell, which has not transmitted failure information, among the plurality of cells when failure information is received from a first cell among the plurality of cells; and

and a prediction unit that predicts a failure of the second unit based on the diagnostic data when the diagnostic data of the second unit is collected by the collection unit.

2. Monitoring system of an elevator according to claim 1,

the elevator monitoring system includes a storage device that stores failure information transmitted from any of the plurality of cells and diagnostic data of each of the plurality of cells collected by the collection unit.

3. Monitoring system of an elevator according to claim 1 or 2,

the monitoring system for an elevator includes a notification unit that notifies a control unit of the elevator when the prediction unit predicts that the second unit will fail.

4. An elevator system, wherein the elevator system comprises:

a control unit that manages call assignment to a plurality of cells in an elevator having the plurality of cells each including a car;

a collecting unit that collects, when failure information is received from a first unit of the plurality of units, diagnostic data of a second unit that has not transmitted failure information of the plurality of units; and

5. The elevator system of claim 4,

the elevator system includes a storage device that stores failure information transmitted from any of the plurality of cells and diagnostic data of each of the plurality of cells collected by the collection unit.

6. The elevator system of claim 4 or 5, wherein,

the elevator system includes a notification unit that notifies the control unit when the prediction unit predicts that the second unit is about to malfunction.

7. The elevator system of claim 6,

the control unit, when receiving a notification from the notification unit, causes a third cell, which is not predicted to have a failure, of the plurality of cells to be assigned a call with priority over the second cell.