CN115397759B

CN115397759B - Elevator system

Info

Publication number: CN115397759B
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: 2024-02-20
Anticipated expiration: 2040-04-24
Also published as: WO2021214987A1; TWI761063B; CN115397759A; JPWO2021214987A1; JP6989069B1; TW202140364A

Abstract

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

Description

Elevator system

Technical Field

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

Background

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

Prior art literature

Patent literature

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

Disclosure of Invention

Problems to be solved by the invention

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

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

Means for solving the problems

The present invention provides a monitoring system for an elevator, comprising: a collection unit that, in an elevator having a plurality of units each including a car, collects, when failure information is received from a first unit of the plurality of units, diagnostic data of a second unit of the plurality of units that does not transmit the failure information; 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, comprising: a control unit that manages call allocation to a plurality of units in an elevator having a plurality of units each including a car; a collection unit that, when failure information is received from a first unit among the plurality of units, collects diagnostic data of a second unit among the plurality of units that does not transmit the failure information; 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 case of the monitoring system or the elevator system of the present invention, it is possible to predict a failure when there is a high possibility of failure in the elevator.

Drawings

Fig. 1 is a structural 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 according to embodiment 1.

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

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

Detailed Description

The mode for carrying out the 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 repetitive description thereof will be appropriately simplified or omitted.

Embodiment 1

Fig. 1 is a structural 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, for example, a building having a plurality of floors. In a building, a hoistway 4 of an elevator 2 is provided. The hoistway 4 is a space extending in the vertical direction across a plurality of floors. The elevator 2 includes a plurality of units 5 and a control unit 6.

Each unit 5 is provided with a car 7. The car 7 is a device that travels in the vertical direction in the hoistway 4 to convey a user or the like between a plurality of floors. 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 supporting a 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 moves the elevator car 7 by hoisting the main rope 8 or the like. The counterweight 10 is a device for balancing the load applied to the main ropes 8 on both sides of the hoisting machine 9 with respect to the car 7. The control panel 11 is a part that controls the operation of the unit 5. The action 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. When detecting the occurrence of a failure, the control panel 11 transmits failure information. 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 that has failed. The control panel 11 has a function of acquiring diagnostic data in the unit 5. The diagnostic data is data for failure prediction in the unit 5. The diagnostic data includes, for example, information of the car 7 such as the position, speed, and load weight of the car 7, operation information of the hoisting machine 9, and status information of a guide rail guiding the running of the car 7 and the counterweight 10.

The control unit 6 is a part that controls the operation of the elevator 2. The operation control performed by the control unit 6 includes, for example, management of calls assigned to the plurality of units 5. The calls managed by the control unit 6 are, for example, hall calls or the like registered by the user at the hall of the elevator 2. The control unit 6 distributes, for example, a hall call registered by a user to any one of the plurality of units 5. The control panel 11 of the unit 5 to which the call is assigned 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 provided at a remote location of a building provided with the elevator 2, for example. 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 collection unit 14 transmits a request signal requesting diagnostic data to each unit 5, for example. The collection unit 14 collects diagnostic data transmitted as a response to the request signal from each unit 5. Here, the information such as the diagnosis data and the failure information transmitted from each unit 5 to the collection unit 14 may be relayed by the control unit 6, for example. In normal operation, the collecting unit 14 may periodically transmit the request signal.

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

The notification unit 16 is a part that notifies the control unit 6 when the prediction unit 15 predicts that the arbitrary unit 5 is about to fail. The notification unit 16 may notify the control unit 6 by including, for example, 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, for example, fault information transmitted from any unit 5 of the elevator 2. The storage device 13 stores, for example, diagnostic data transmitted from the individual units 5 of the elevator 2. The storage device 13 stores the result of the failure prediction by the predicting unit 15. The storage device 13 stores classification information based on blocks (blocks) of the elevator 2. The block of the elevator 2 is a class containing some or all of the plurality of units 5. The block of the elevator 2 includes, for example, a unit 5 having a period close to the start of operation among the plurality of units 5. Alternatively, the block of the elevator 2 may include, for example, a cell 5 provided close to each other among the plurality of cells 5. The storage means 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 units 5A, 5B, and 5C as the units 5 included in the same block.

Next, an example of failure prediction 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 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 unit 5 as the transmission source is the unit 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 receives the failure information from any unit 5 collects diagnostic data from other units 5 included in the same block as that unit 5. In this example, the collection unit 14 collects diagnostic data from the units 5A and 5C included in the same block as the unit 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 collection unit 14 performs failure prediction for each of the units 5A and 5C.

The storage device 13 stores the diagnostic data transmitted from the units 5A and 5C. Further, the storage device 13 stores the results of the failure prediction concerning the units 5A and 5C.

As shown in fig. 5, when the prediction unit 15 predicts that a failure is about to occur in any of the units 5, the notification unit 16 notifies the control unit 6 of the failure. In this example, the prediction unit 15 predicts that the unit 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 be failed.

The control unit 6 determines the unit 5 for which the failure is predicted as the unit 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 the unit 5C for which no failure is predicted, in preference to the unit 5 for which a failure is predicted. For example, when both the units 5A and 5C can be allocated, the control unit 6 controls the operation of the elevator 2 so that the call is allocated to the unit 5C. Alternatively, the control unit 6 may control the operation of the elevator 2 so as not to allocate the call to the unit 5 whose failure is predicted, for example, when there is a margin in the number of units 5 to allocate the call.

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

Here, the unit 5B that 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 failure information and is not predicted to have occurrence of a 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 collection unit 14 determines whether or not failure information is received from any unit 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 again to step ST1.

In step ST2, the collecting unit 14 determines the unit 5 that received the failure information. The collection unit 14 reads the information of the block of the specified cell 5 from the storage device 13. Thereafter, 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 diagnostic data is completed for the read block. The collection unit 14 determines that the collection of the diagnostic data is completed, for example, when the diagnostic data is collected for all the units 5 that do not transmit the fault information among the units 5 included in the read block. When it is determined that the collection of diagnostic data is not completed, the operation of the monitoring system 3 proceeds to step ST4. When it is determined that the collection of 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 not yet collecting diagnostic data among the units 5 not transmitting the fault information included in the read block. Thereafter, the operation of the monitoring system 3 proceeds to step ST5.

In step ST5, the prediction unit 15 predicts a failure of the unit 5 that has collected the diagnostic data based on the diagnostic data. Thereafter, 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 occurrence of a failure for the unit 5 for which failure prediction has been performed. 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 unit 16 notifies the control unit 6 of the prediction result of the unit 5 for which the prediction unit 15 predicts that a failure is to occur. Thereafter, 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 comprise units 5 that repeat each other.

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

In the elevator 2, a plurality of units 5 may start to operate at the same time. At this time, a failure due to, for example, aging or the like may occur at a timing of approach between the units 5 that approach each other at the time of starting operation. In the elevator 2, the units 5 disposed close to each other are similarly affected by an earthquake or the like. Therefore, a failure due to the influence of an earthquake or the like can be generated at a timing of approach between the units 5 whose setting positions are close to each other. In this way, when any unit 5 fails, the same failure is highly likely to occur in other units 5. The monitoring system 3 collects diagnostic data of other units 5 of the elevator 2 when a fault occurs in any of the units 5 of the elevator 2, and thus can predict a fault when the probability of a fault occurring in the elevator 2 is high. This makes it possible to predict occurrence of a failure in the elevator 2 and prevent the failure from being detected otherwise.

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

The storage device 13 stores diagnostic data and the like, and therefore the monitoring system 3 can observe the change with time of the unit 5 and the like. The prediction unit 15 may perform the failure prediction by using the past diagnosis data stored in the storage device 13 together with the failure prediction. In this case, the prediction unit 15 can perform the failure prediction more accurately.

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 occurrence of the failure of the second unit.

When receiving the notification from the notification unit 16, the control unit 6 causes the second unit to preferentially assign a call to a third unit, among the plurality of units 5, for which no failure is predicted.

The control unit 6 can acquire information about which unit 5 predicts occurrence of a failure. Thereby, 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 unit 5 in a good state by suppressing the use of the unit 5 predicted to be in failure. The control unit 6 can also present the unit 5 for which no failure is predicted to the user. In this way, since it is possible to present to the user that at least one of the units 5 is in a good condition, the control unit 6 can give 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 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 realizes the functions of the elevator system 1 by reading and executing the programs stored in the memory 100b.

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

In the case of processing circuitry provided with dedicated hardware 200, the processing circuitry is implemented, for example, by 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 realized by a processing circuit, respectively. Alternatively, the functions of the elevator system 1 can be realized by a processing circuit. For the functions of the elevator system 1, one 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 implements 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 invention can be applied to failure prediction of an elevator.

Description of the reference numerals

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 collection section; 15: a prediction unit; 16: a notification unit; 100a: a processor; 100b: a memory; 200: dedicated hardware.

Claims

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

a control unit that manages call allocation to a plurality of units including a car in an elevator having the plurality of units;

a collection unit that, when failure information is received from a first unit among the plurality of units, collects diagnostic data of a second unit among the plurality of units that does not transmit the failure information;

a prediction unit that predicts a failure of the second unit based on the diagnostic data when the collection unit collects the diagnostic data of the second unit; and

a notification unit configured to notify the control unit when the prediction unit predicts that the second unit is about to fail,

the control unit can assign a call to a third unit that is not predicted to be in failure, when assigning both the second unit and the third unit, when receiving a notification from the notification unit, with priority over the second unit.

2. The elevator system of claim 1, wherein,

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