CN109153535B

CN109153535B - Elevator monitoring device and communication confirmation method

Info

Publication number: CN109153535B
Application number: CN201780031222.1A
Authority: CN
Inventors: 渡边明彦
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Building Techno Service Co Ltd
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Building Solutions Corp
Priority date: 2016-05-31
Filing date: 2017-04-28
Publication date: 2020-06-16
Anticipated expiration: 2037-04-28
Also published as: WO2017208715A1; JP6429831B2; KR102188563B1; CN109153535A; KR20180134985A; DE112017002717T5; JP2017214179A

Abstract

The monitoring device (3) transmits the diagnosis result of the diagnosis operation of the elevator (1) to a monitoring center (4) for remotely monitoring the elevator (1) by using a public line network (11), wherein, in the diagnosis operation of the elevator (1), when the elevator car (7) stops at each floor, the test communication is carried out with the monitoring center (4) through the public line network (11), the result of the test communication failure between the monitoring center (4) and the elevator car is stored, and when the result of the test communication failure is stored, the elevator car (7) is moved to the test communication success layer, and the result of the test communication failure is transmitted to the monitoring center (4) from a wireless communication part. Thereby, the communication state between the wireless communication device of the elevator and the monitoring center can be confirmed.

Description

Elevator monitoring device and communication confirmation method

Technical Field

The present invention relates to an elevator monitoring device and a communication confirming method, and more particularly to an elevator monitoring device and a communication confirming method for transmitting a diagnosis result of an elevator to a monitoring center for remotely monitoring the elevator by using a public line network.

Background

There are remote monitoring systems that remotely monitor a plurality of elevators from a remote location. In the remote monitoring system, information on the elevator is transmitted from a communication device provided in the elevator to a remote monitoring center by wireless communication. As a technique for performing communication between an elevator and a monitoring center via a wireless communication network, a technique described in patent document 1 is known.

The technique described in patent document 1 aims to provide an elevator with a sensor appropriately in consideration of the radio wave conditions, and to reliably perform initialization and data collection after the installation by wireless communication. The device is composed of the following parts: a wireless sensor terminal which is provided in a maintenance target device such as a car or a counterweight in an elevator facility and measures data required for diagnosing a failure of the maintenance target device; and a data collection device which is provided at an arbitrary position in the elevator facility and collects data measured by the wireless sensor terminal by wireless communication, wherein the data collection device has a radio wave intensity measurement function of measuring the radio wave intensity by wireless communication with a portable wireless terminal carried by a maintenance person, and when the maintenance person sets the wireless sensor terminal, the radio wave intensity measured by the radio wave intensity measurement function is transmitted to the portable wireless terminal as the radio wave intensity of the installation place of the wireless sensor terminal.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-103817

Disclosure of Invention

Problems to be solved by the invention

In the technique described in patent document 1, data collection by the wireless sensor terminal is performed by providing the maintenance target device with the wireless sensor terminal and moving the maintenance target device to a place where the radio wave intensity can be obtained most. However, the technique described in patent document 1 is directed to communication between a wireless sensor terminal provided in a maintenance target device and a data collection device, and does not consider communication between the data collection device and a monitoring center.

Meanwhile, in recent elevators, machine-roomless elevators in which a control device and the like are disposed in a hoistway are widespread, and a wireless communication device that communicates with a monitoring center is also disposed in the hoistway. The wireless communication device communicates with the monitoring center via the public communication network by performing wireless communication with the base station of the public communication network, but when the car and the counterweight are positioned between the wireless communication device and the base station, there is a possibility that the radio wave of the wireless communication device is shielded by the car or the like and communication becomes difficult.

Therefore, an object of the present invention is to confirm a communication state between a wireless communication device of an elevator and a monitoring center.

Means for solving the problems

The elevator monitoring device of the present invention transmits a diagnosis result of a diagnosis operation of an elevator to a monitoring center for remotely monitoring the elevator by using a public line network, and is characterized by comprising: a wireless communication unit which performs test communication with the monitoring center via the public line network every time a car stops at each floor during diagnostic operation of the elevator; a storage unit that stores at least an unsuccessful result of the success/failure results of the test communication with the monitoring center; and a control unit that moves the car to a successful floor of the test communication and transmits a result of the unsuccessful test communication from the wireless communication unit to the monitoring center, when the storage unit stores the result of the unsuccessful test communication.

In the monitoring device for an elevator according to the present invention, when the diagnostic operation of the elevator is interrupted, the storage in the storage unit is deleted and the diagnostic operation of the elevator is performed again.

In the communication confirming method of the elevator monitoring device according to the present invention, the diagnosis result of the diagnosis operation of the elevator is transmitted to the monitoring center for remotely monitoring the elevator by using the public line network, and the wireless communication unit performs the test communication with the monitoring center via the public line network every time the car stops at each floor in the diagnosis operation of the elevator, stores at least an unsuccessful result of the success or failure result of the test communication with the monitoring center, moves the car to a successful floor of the test communication when the unsuccessful result is stored, and transmits the unsuccessful result of the test communication to the monitoring center.

Effects of the invention

According to the present invention, the communication state between the wireless communication device of the elevator and the monitoring center can be confirmed, and when the communication state of the wireless communication device is not good, the installation position of the wireless communication device of the elevator can be changed to a position where the communication state is good. As a result, communication can be reliably performed between the wireless communication device of the elevator and the monitoring center.

Drawings

Fig. 1 is a block diagram showing the configuration of a remote monitoring system including a monitoring device for an elevator of the present invention.

Fig. 2 is a block diagram showing the structure of the monitoring apparatus.

Fig. 3 is a flowchart showing the processing of the monitoring apparatus.

Fig. 4 is a flowchart showing the processing of the monitoring apparatus.

Fig. 5 is a schematic diagram illustrating a change in the position of the wireless communication apparatus.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing the configuration of a remote monitoring system 100 including a monitoring device for an elevator of the present invention. In fig. 1, each floor of the building 1F to 6F is schematically shown.

As shown in fig. 1, a remote monitoring system 100 according to the present embodiment includes: an elevator 1 installed in a building not shown; a control device 2 for controlling the operation of the elevator 1; a monitoring device 3 that acquires diagnostic information of the elevator 1 from the control device 2; a monitoring center 4 for remotely monitoring the elevator 1 based on the diagnosis information; and a wireless communication device 5 for transmitting the diagnosis information of the elevator 1 acquired by the monitoring device 3 to the monitoring center 4.

The elevator 1 includes: a car 7 disposed in a hoistway 6 of the elevator 1; a hoisting machine 9 around which a rope 8 having one end connected to the car 7 is wound; and a counterweight 10 connected to the other end of the rope 8. When the hoisting machine 9 is driven, the car 7 and the counterweight 10 are lifted and lowered in the hoistway 6 by the rope 8.

In the elevator 1 of the present embodiment, the hoisting machine 9 is disposed at the upper part of the hoistway 6, and the control device 2, the monitoring device 3, and the wireless communication device 5 are disposed at the lower part of the hoistway 6. Is a so-called machine room-less structure. In the present embodiment, although the hoisting machine 9 is disposed in the upper portion of the hoistway 6, the hoisting machine 9 may be disposed in the lower portion of the hoistway 6.

The control device 2 controls the driving of the hoisting machine 9 to move the car 7 up and down in the hoistway 6 and stop at each of the floors 1F to 6F. The monitoring device 3 acquires diagnostic information and/or operation information of the elevator 1 from the control device 2, performs wireless communication between the wireless communication device 5 and the wireless base station 12 of the public line network 11, and transmits information acquired via the public line network 11 to the monitoring center 4.

The wireless communication device 5 has an antenna for performing wireless communication with the wireless base station 12, and performs wireless communication with the wireless base station 12 via the antenna. The wireless communication device 5 is connected to the monitoring device 3 by a cable having a predetermined length. The predetermined length of the cable is a length sufficient to dispose the wireless communication device 5 at almost all positions inside the hoistway 6. The communication of the wireless communication device 5 is controlled by a communication control unit 32 described later, and the wireless communication device 5 and the communication control unit 32 constitute a wireless communication unit.

Fig. 2 shows a block diagram of the monitoring device 3. As shown in fig. 2, the monitoring device 3 includes: an elevator control unit 31 connected to the control device 2, for outputting a command to the control device 2 to execute a diagnostic operation, and for acquiring a result of the diagnostic operation from the control device 2; a communication control unit 32 connected to the wireless communication device 5 and controlling communication of the wireless communication device 5; a storage unit 33 that stores the result of the diagnostic operation acquired from the control device 2, the instruction received from the monitoring center 4, and the like; and a control unit 34 that controls the elevator control unit 31 and the communication control unit 32, and performs control to transmit various information stored in the storage unit 33 to the control device 2 and the monitoring center 4.

The control unit 34 outputs a command for causing the elevator 1 to perform a diagnostic operation to the control device 2 via the elevator control unit 31. When the control device 2 executes the diagnosis operation of the elevator 1, the diagnosis operation such as opening and closing of the door of the car 7 and/or a deviation of a stop position of each floor is performed every time the elevator 1 stops at each floor. The control unit 34 also outputs a command for executing test communication with the monitoring center 4 together with the diagnostic operation to the wireless communication device 5 via the communication control unit 32. The test communication performed by the wireless communication apparatus 5 is performed to confirm whether or not the communication between the wireless communication apparatus 5 and the monitoring center 4 is normally performed. The specific control related to the test communication is described later.

The communication control unit 32 controls communication from the monitoring center 4 and also controls communication from the monitoring apparatus 3 to the monitoring center 4. In particular, test communication is performed with the monitoring center 4 in accordance with a command from the control unit 34. The storage unit 33 has a failure list 33A, and the failure list 33A stores the results of test communications, particularly the results of test communications failures among the results of success or failure of test communications.

Fig. 3 and 4 are flowcharts showing processing in the monitoring device 3 of the elevator 1 according to the present embodiment. In step S101 of fig. 3, the control unit 34 initializes the contents of the failure list 33A stored in the storage unit 33, that is, clears the contents of the failure list 33A, and proceeds to step S102. The reason why the contents of the failure list 33A are reset is that, when a passenger calls the car 7 during the execution of the diagnostic operation, the diagnostic operation is interrupted in response to the call, and the diagnostic operation is executed again after the passenger gets off the car, and in this case, the contents before the diagnostic operation is interrupted may be stored in the failure list 33A. Therefore, when the process of the flowchart is performed, the failure list 33A is initialized.

In step S102 in fig. 3, the control unit 34 outputs a command for moving the car 7 to the lowermost floor of the building from the elevator control unit 31 to the control device 2. In the present embodiment, if the control device 2 moves the car 7 to 1F, the control unit 34 advances the process to step S103 in fig. 3 to check whether the elevator 1 is installed in the building and is the first diagnosis operation. That is, if the first diagnosis operation is performed, the wireless communication between the wireless communication device 5 and the wireless base station 12 is performed for each layer, and it is necessary to check the communication state of the wireless communication device 5.

In step S103 of fig. 3, the control unit 34 proceeds to step S104 when determining that the operation is the first diagnostic operation ("yes"), and proceeds to step S107 when determining that the operation is not the first diagnostic operation ("no"). In step S104, the control unit 34 causes the wireless communication device 5 to execute test communication with the monitoring center 4. Since the diagnostic operation is performed from 1F, if the test communication is performed at 1F, the control unit 34 advances the process to step S105. The test communication is used to confirm success or failure of communication from the wireless communication device 5 to the monitoring center 4, and is performed by transmitting a predetermined signal.

In step S105, the control unit 34 confirms whether or not the test communication is a reply from the monitoring center 4. When a reply to the test communication is received from the monitoring center 4 ("yes"), the control section 34 advances the process to step S107, whereas when a reply cannot be received from the monitoring center 4 ("no"), that is, when the test communication is not received by the monitoring center 4, the control section 34 advances the process to step S106.

As shown in fig. 1, when the counterweight 10 is located between the wireless communication apparatus 5 and the wireless base station 12, there is a possibility that the test communication from the wireless communication apparatus 5 is shielded by the counterweight 10 from being received by the wireless base station 12. In such a case, the test communication fails in step S105. In addition, sometimes, the radio wave of the wireless communication device 5 is shielded by the car 7.

Here, a description will be given of a communication mask between the radio communication apparatus 5 and the radio base station 12. Normally, there is no screen between the wireless communication device 5 and the wireless base station 12, but when the car 7 and the counterweight 10 move up and down in the hoistway 6, they may be located between the wireless communication device 5 and the wireless base station 12. At this time, depending on the positions of the car 7 and the counterweight 10, the wireless communication device 5 and the wireless base station 12 may be shielded from each other, and communication between the wireless communication device 5 and the wireless base station 12 may be difficult due to the shielding.

Returning to the flowchart, in step S106, the control unit 34 stores the floor (1F in this case) on which the test communication failed in the failure list 33A, and the process proceeds to step S107. In step S107, the control unit 34 causes the control device 2 to perform a diagnostic operation such as opening and closing of the door of the car 7 at the floor, and the process proceeds to step S108.

In step S108, the control unit 34 checks whether or not the floor on which the diagnostic operation is performed by the control device 2 is the uppermost floor. In the case of the uppermost layer ("yes"), that is, in the case of 6F in the present embodiment, the control unit 34 advances the process to step S110 in fig. 4. If the uppermost layer is not found ("no"), the process returns to step S103, and steps S103 to S108 are repeated until the uppermost layer is found.

In fig. 4, in step S110, the control unit 34 checks whether or not a floor on which the test communication failed is stored in the failure list 33A. When the floor is stored in the failure list 33A ("yes"), the control unit 34 advances the process to step S111, and when the floor is not stored in the failure list 33A ("no"), the communication is tested successfully at all floors, and therefore, the process of the flowchart shown in fig. 3 is ended.

In step S111, the control unit 34 outputs to the control device 2 a command to move the car 7 to a floor not stored in the failure list 33A, that is, a floor on which the test communication has succeeded. Then, if the car 7 moves to the floor where the test communication is successful, the control unit 34 advances the process to step S112. In step S112, the control unit 34 outputs an instruction to transmit the failure list 33A to the monitoring center 4 to the wireless communication device 5. Then, if the wireless communication apparatus 5 has transmitted the failure list 33A to the monitoring center 4, the process of the flowchart shown in fig. 3 ends. The monitoring center 4 can confirm the communication state of the wireless communication device 5 from the stored content of the failure list 33A. In this case, since the failure list 33A stores the case where the test communication failed on the 1F floor, the monitoring center 4 can know the information.

Next, the position adjustment of the wireless communication device 5 will be described. Upon receiving the failure list 33, the monitoring center 4 dispatches maintenance personnel to the elevator 1 to improve the communication state of the wireless communication device 5. The maintenance person adjusts the position and the like of the wireless communication device 5 according to the contents of the failure list 33A. For example, when 1F is stored in the failure list 33A, the wireless communication device 5 is moved from the lower portion to the upper portion of the hoistway 6 in fig. 1, and test communication is performed again.

As shown in fig. 5, when the car 7 is positioned between the wireless communication device 5 and the wireless base station 12 and the radio wave therebetween is blocked, the wireless communication device 5 is moved from a position P indicated by a solid line in the figure to a position P1 or a position P2 indicated by a broken line in the figure in the hoistway 6. This adjusts the position of the wireless communication device 5 to perform test communication again.

As described above, since the test communication is performed between all the floors and the monitoring center 4 during the diagnosis operation, it is possible to confirm whether the car 7 and the counterweight 10 block the radio wave of the radio communication device 5, and when the test communication is unsuccessful due to the blocked radio wave, it is possible to confirm the floor on which the radio wave is blocked.

Thus, when the communication from the wireless communication device 5 to the monitoring center 4 fails, the position of the wireless communication device 5 of the elevator 1 can be changed to a position where the communication to the monitoring center 4 succeeds. As a result, the wireless communication device 5 of the elevator 1 and the monitoring center 4 can reliably communicate with each other.

Further, since the test communication is performed simultaneously with the diagnosis operation, the communication state between the wireless communication device 5 and the monitoring center 4 can be automatically confirmed, and the confirmation result is transmitted to the monitoring center 4, so that the communication state can be confirmed at the monitoring center 4.

Further, although the failed floor of the test communication is stored in the failed list 33A, a test communication result list may be created so as to store both the floor of the test communication failure and the floor of the test communication success. Although the test communication is performed when the elevator 1 is installed in the building and the first diagnosis operation is performed, the test communication may be performed every predetermined period, for example, once a month. By performing test communication at predetermined intervals, it is possible to cope with a change in the environment around the wireless communication device 5.

Description of the reference symbols

1: an elevator; 2: a control device; 3: a monitoring device; 4: a monitoring center; 5: a wireless communication device; 6: a hoistway; 7: a car; 8: a rope; 9: a traction machine; 10: a counterweight; 11: a public line network; 12: a wireless base station; 31: an elevator control unit; 32: a communication control unit; 33: a storage unit; 33A: a failure list; 34: a control unit; 100: a remote monitoring system.

Claims

1. An elevator monitoring device for transmitting a diagnosis result of a diagnosis operation of an elevator to a monitoring center for remotely monitoring the elevator by using a public line network, the elevator monitoring device comprising:

a wireless communication unit which performs test communication with the monitoring center via the public line network every time a car stops at each floor during diagnostic operation of the elevator;

a storage unit that stores at least an unsuccessful result of the success/failure results of the test communication with the monitoring center; and

and a control unit that moves the car to a successful floor of the test communication and transmits a result of the unsuccessful test communication from the wireless communication unit to the monitoring center, when the storage unit stores the result of the unsuccessful test communication.

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

when the diagnosis operation of the elevator is interrupted, the storage of the storage part is deleted, and the diagnosis operation of the elevator is performed again.

3. A communication confirming method of a monitoring device of an elevator, which transmits the diagnosis result of the diagnosis operation of the elevator to a monitoring center for remotely monitoring the elevator by using a public line network,

during diagnostic operation of the elevator, whenever a car stops at each floor, test communication is performed with the monitoring center via the public line network;

storing at least unsuccessful ones of said success or failure results of said test communications with said monitoring center;

in the event that an unsuccessful result is stored, the car is moved to a successful floor of the test communication and an unsuccessful result of the test communication is sent to the monitoring center.