JPH08282931A - Remote monitoring device for elevator - Google Patents

Abstract

PURPOSE: To provide a remote monitoring device for an elevator whereby a data can be transmitted to a trouble diagnostic device in a short time. CONSTITUTION: In a remote monitoring device 3, generation of a trouble in an elevator 1, when detected by a trouble detecting part 36, is transmitted to a supervisory center device 4 through a low speed communication part 32 and a telephone line connecting part 31 by a communication command part 35. When the cause of trouble is necessary to be study, a remote trouble diagnostic device 5 requests a trouble related data from the remote monitoring device 3. In the communication command part 35, a high speed communication part 33 is selected by a switch 34, to judge a request, and after a required data from an elevator control part 2 is stored in a trouble information memory part 37, the selected high speed communication part 33 is used, to transmit a large amount of data to the remote trouble diagnostic device 5. Thus by performing transmission in a short time, the cause of trouble can be quickly investigated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator remote monitoring device for monitoring the operation and operating condition of an elevator.

[0002]

2. Description of the Related Art A remote monitoring device for an elevator extracts various data relating to the operation and operation of the elevator from an elevator control section, and when a serious accident occurs in the elevator, the accident is remotely monitored via a communication line. It has a function of notifying a monitoring center device at a location and transmitting an operation state at the time of failure detection, an operation history, abnormality detection information, etc. by a command. Such a remote monitoring device for an elevator is described in, for example, Japanese Patent Laid-Open No. 4-201963 and is well known.

[0003]

As described above, when the elevator remote monitoring device detects a failure of the elevator, the elevator remote monitoring device reports this to the monitoring center device. The content of the notification is a number (control No.) and data indicating the failure content. Since the data amount of these notification contents is relatively small, the communication between the remote monitoring device and the monitoring center device is completed in a short time. On the other hand, when a failure occurs, the elevator remote monitoring device is instructed by the failure diagnostic device at the remote location to indicate the operating state at the time of failure detection,
The operation history, the abnormality detection information, and the like are collected, and these data are transmitted to the failure diagnosis device via the communication line, and the failure diagnosis device investigates the cause of the failure based on the transmitted data. In this case, since a large amount of data is transmitted, communication between the remote monitoring device and the failure diagnosis device requires a long time.

By the way, since the failure of the elevator causes trouble to many users, it is necessary to quickly find out the cause of the failure and prevent the failure from occurring again. In particular, a failure in which the passengers are trapped in the elevator not only causes the passengers to be extremely anxious, but also may cause a personal injury in some cases. However, since the amount of data transmitted to the failure diagnosis device is extremely large as described above, there is a problem that the communication time from the elevator remote monitoring device to the failure diagnosis device becomes long and the cause investigation is delayed accordingly.

An object of the present invention is to solve the above problems in the prior art and to provide an elevator remote monitoring device capable of transmitting data to a failure diagnosis device in a short time.

[0006]

In order to achieve the above object, the present invention extracts various data of an elevator from an elevator control section, transmits the data to the monitoring center device when an elevator failure is detected, and In a remote monitoring device for an elevator, which transmits a data transmission request related to a failure from a failure diagnosing device, the remote monitoring device includes a plurality of communication units having different communication speeds, and a high speed communication unit among the communication units. A communication section selecting means for selecting the communication section to determine a data transmission request from the failure diagnosis device;
And a transmission unit for transmitting required data to the failure diagnosis device by using the high-speed communication unit selected by the communication unit selection unit.

[0007]

The communication with the monitoring center device, such as the notification of an elevator failure, is performed by the communication unit having a slow communication speed. Further, the data transmission request from the failure diagnosis device is confirmed by switching to the high speed communication unit, and the data is transmitted by the switched high speed communication unit. By using the high-speed communication unit, a large amount of data necessary for investigating the cause of the failure can be transmitted in a short time, and the cause of the failure can be found quickly.

[0008]

The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a block diagram of an elevator remote monitoring device according to an embodiment of the present invention. In this figure, 1 is an elevator, and a car 1a, a rope 1b, a counterweight 1c, and pulleys 1d and 1e are shown. Reference numeral 2 denotes an elevator control unit that controls the elevator 1 and collects data on the operation and operating state of the elevator 1. Three
Is a remote monitoring device for the elevator 1, and is installed in the building in which the elevator 1 is installed. A monitoring center device 4 collectively monitors the elevator 1 and many other elevators. Reference numeral 5 denotes a remote failure diagnosis device, which analyzes the cause of the failure when a failure occurs based on required data transmitted from the remote monitoring device.

The remote monitoring device 3 includes a telephone line connecting section 31, a low speed communication section 32, and a high speed communication for connecting a telephone line between the remote monitoring apparatus 3 and an external device such as the monitoring center apparatus 4 and the remote failure diagnosis apparatus 5. Unit 33, a switch 34 for switching them, a communication command unit 35 for issuing various commands, a failure detection unit 36 for detecting a failure of the elevator 1, and a failure information storage unit 37 for storing data related to the failure. ing. Of these units, the necessary ones are configured using a microcomputer. The low speed communication unit 32 performs communication at a speed of 300 BPS (bits / second), for example, and the high speed communication unit 33 performs communication at a speed of 1200 BPS, for example. The communication speed of the telephone line is 300 BPS
It is used up to about 28800 BPS.

Next, the operation of this embodiment will be described with reference to a flowchart showing the operation of the remote monitoring device 3 in FIG. 2, a diagram showing a communication destination confirmation protocol between the remote monitoring device 3 and the monitoring center 4 in FIG. Also, a description will be given with reference to a flowchart showing an operation of confirming a communication destination in FIG. The remote monitoring device 3 constantly monitors the elevator 1 by the failure detection unit 36. The communication command section 35 determines whether or not a failure detection signal is output from the failure detection section 36 (step S ₁ shown in FIG. 2), and then the telephone line connection section 31 determines whether or not a signal is received from outside (bell arrival). (Procedure S ₂ ) is being watched. Here, the failure detection unit 36
Detects that a failure has occurred in the elevator 1 by, for example, inputting a signal that the safety device of the elevator 1 has been activated, a signal that the elevator 1 has stopped suddenly at a high speed, and the like. The command unit 35 instructs the telephone line connection unit 31 to connect the telephone line to the monitoring center device 4. Telephone line connection unit 31 performs dialing to the monitoring center device 4 (Step S _3), and waits for a response from the monitoring center device 4 (Step S _4). When there is a response from the monitoring center device 4, the communication command unit 35 operates the switch 34 to select the low speed communication unit 32, and sets the communication mode of the remote monitoring device 3 to the low speed communication mode (step S ₅ ). communicate destination confirmation process (Step S _6).

This communication destination confirmation processing is for confidentiality and is performed by the means shown in FIGS. 3 and 4. That is, the communication command unit 35 transmits the encrypted identification signal a shown in FIG. 3 to the monitoring center device 4 via the telephone line connection unit 31 (step S ₆₁ shown in FIG. 4). When the monitoring center device 4 confirms that the transmitted identification signal a is a predetermined identification signal, it transmits the encrypted response signal b shown in FIG. 3 to the remote monitoring device 3. Communication command unit 35 waits for reception of the response signal b from the monitoring center device 4, it is determined whether the correct response signal b is received (Step S ₆₂ shown in FIG. 4), the correct response signal b is received It is judged that the communication destination has been confirmed (step S ₇ shown in FIG. 2), and this time, the confirmation normal signal c is transmitted to the monitoring center device 4 (step S ₆₃ shown in FIG. 4),
The process proceeds to the process of step S ₈ shown in (1), and the failure data (data indicating the management number of the failed elevator and the details of the failure) is transmitted to the monitoring center device 4 to notify the failure.

If the response signal b transmitted from the monitoring center device 4 is not a correct signal, the communication command unit 35
Alternatively, when the response signal b is not received within the predetermined time,
It is determined that the communication destination cannot be confirmed in step S ₇ shown in FIG. ₇ , and the confirmation normal signal c is not transmitted, and the telephone line connection unit 31 is instructed to open the telephone line as an abnormal end. On the other hand, also in the monitoring center device 4, if the confirmation normal signal c is not received within the predetermined time, the telephone line is opened as an abnormal end.

On the other hand, when the telephone line connection unit 31 determines in the process of step S ₂ that a bell has arrived (usually a signal is received from the monitoring center device 4), the telephone line connection unit 31 connects the telephone line (step S
₉ ) and informs the communication command unit 35 of this,
Selects the low-speed communication unit 32 by the switch 34, and sets the communication mode of the remote monitoring device 3 to the low-speed communication mode (Step S _10), followed by a communication destination confirmation process (Step S _11). The process of confirming the communication destination is that the remote monitoring device 3 becomes the receiving side, but the remote monitoring device 3 always sends the identification signal first, and is the same as the process in step S ₆ . When it is determined that the communication destination is confirmed in the process of step S ₁₁ (step S ₁₂ ), the communication command unit 35 causes the monitoring center device 4
The processing of the communication (command communication) between the performing (Step S _13).

When it is determined in step S ₁₂ that the communication destination is not confirmed, the communication command unit 35 determines that the incoming call in step S ₂ is likely to be the incoming call from the remote diagnostic device 5, and the switch is switched. Select the high-speed communication unit 33 by 34,
The communication mode of the remote monitoring device 3 is set to high-speed communication mode (Step S _14).

The remote fault diagnostic device 5 will be described below. The monitoring center device 4 communicates in the low speed communication mode, but the remote failure diagnosis device 5 can communicate in both the low speed communication mode and the high speed communication mode. On the other hand, many remote monitoring devices include not only those equipped with the low-speed communication unit and the high-speed communication unit as in the above embodiment, but also those capable of performing communication only in the low-speed mode. Therefore, the telephone number and communication mode (low-speed communication mode only for low-speed communication mode, high-speed communication mode for both communication modes) are stored in the remote failure diagnosis device 5 for each remote monitoring device. Therefore, when the remote failure diagnosis device 5 requests data transmission to the remote monitoring device of the failed elevator, the remote failure diagnosis device 5 automatically
Alternatively, the operator retrieves the telephone number and the communication mode of the remote monitoring device of the transmission partner from the file and transmits in that communication mode. Incidentally, if a failure occurs, whether to request data relating to faults against the failed elevator remote monitoring system, based on the failure contents sent from the remote monitoring device in step S _8, the monitoring center device 4
Is determined to automatically send a data request command to the remote fault diagnostic device 5, or manually by an operator.

Since the remote monitoring device 3 of this embodiment is provided with the low speed communication part 32 and the high speed communication part 33 as shown in FIG. 1, the data request from the remote failure diagnosis device 5 is performed in the high speed communication mode. Therefore, in the state in which the communication mode is set to the low-speed communication mode in the processing of Step S _10, grasp the transmissions from the remote monitoring device 3 (identification signal) is not possible and therefore the communication destination in step S ₁₂ It will be judged that it cannot be confirmed. Therefore, in the processing of steps S _14, as described above, by setting the communication mode of the remote monitoring device 3 to the high-speed communication mode, it is possible to grasp the transmissions from remote diagnosis device 5 (a response signal to the identification signal),
Performing communication destination confirmation process in this state (Step S ₁₅₎ and the communication destination confirmation determination (Step S _16). These processing steps S
_This is the same as the processing of ₁₁ and S ₁₂ .

When it is confirmed that the destination of the transmission is the remote failure diagnosis device 5, the communication command section 35 issues a command to the elevator control section 2 to send the failure detection data to the failure detection section 36 earlier. Along with (safety device activation signal, high-speed sudden stop signal, etc.), data related to the failure of the elevator 1, such as position data and speed data of the elevator 1, are stored in the failure information storage unit 37, and these data are connected to the telephone line. It is transmitted to the remote fault diagnosis device 5 via the unit 31 (step S ₁₇ ). When the destination is not confirmed, the communication command unit 35 opens the telephone line by the telephone line connection unit 31 and terminates the communication.

As described above, in this embodiment, when the remote failure diagnostic device requests the transmission of data related to a failure, this is confirmed by switching from the low speed communication mode to the high speed communication mode, and this switching is performed. Since the communication is performed in the high-speed communication mode, the data can be transmitted in a short time, and the cause of the failure can be quickly investigated and the required treatment can be performed. Further, since it is not necessary to change the existing device, it can be implemented easily and inexpensively.

In the above description of the embodiment, an example in which a monitoring center device and a remote failure diagnosis device are installed side by side has been described. However, failure diagnosis of a failed elevator is performed only for important failures and complicated failures. As good as possible, the remote fault diagnosis device can be shared by several monitoring center devices.

[0020]

As described above, according to the present invention, the remote monitoring device is provided with a plurality of communication units having different communication speeds, and the high speed communication unit is selected to judge the data transmission request from the failure diagnosis device. Since the required data is sent to the failure diagnosis device using this high-speed communication unit, the data can be sent in a short time, and the cause of the failure can be quickly investigated to take the necessary action. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram of an elevator remote monitoring device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of the remote monitoring device shown in FIG.

FIG. 3 is a diagram illustrating a protocol between a remote monitoring device and a monitoring center device.

FIG. 4 is a flowchart illustrating an operation when the protocol shown in FIG. 3 is implemented.

[Explanation of symbols]

 1 Elevator 2 Elevator Control Device 3 Remote Monitoring Device 4 Monitoring Center Device 5 Remote Failure Diagnosis Device 31 Telephone Line Connection Section 32 Low Speed Communication Section 33 High Speed Communication Section 34 Switch 35 Communication Command Section 36 Failure Detection Section 37 Failure Information Storage Section

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroshi Yamazaki 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Service Co., Ltd.

Claims (1)

[Claims] 1. When various kinds of elevator data are extracted from the elevator control unit, and when an elevator failure is detected, this is sent to the monitoring center apparatus, and when a failure diagnosis apparatus requests data transmission related to the failure. In a remote monitoring device for an elevator that transmits this, a plurality of communication units having different communication speeds and a high-speed communication unit among the communication units are selected for the remote monitoring device to request data transmission from the failure diagnosis device. Communication unit selection means for determining
A remote monitoring device for an elevator, comprising: a transmission unit for transmitting required data to the failure diagnosis device by using the high-speed communication unit selected by the communication unit selection unit.