JP3408886B2 - Elevator remote monitoring device - Google Patents

Description

Description: 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 state of an elevator. 2. Description of the Related Art An elevator remote monitoring device extracts various data relating to the operation and operation of an elevator from an elevator control unit, and when a serious accident occurs in the elevator, the data is transmitted via a communication line. It is provided with a function to report the accident to a monitoring center device at a remote location, and to transmit an operation state, operation history, abnormality detection information, and the like at the time of failure detection by a command. Such an elevator remote monitoring device is described in, for example, Japanese Patent Application Laid-Open No. 4-201963 and is well known. [0003] As described above, when an elevator remote monitoring device detects a failure of an elevator, it notifies the monitoring center device of the failure. The content of the notification specifies the elevator. This is data indicating a number (management number) and details of a failure. Since the data amount of these notification contents is relatively small, 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 operates according to the instruction of the failure diagnosis device at a remote location,
The operation history, abnormality detection information, and the like are collected, and these data are transmitted to the failure diagnosis device via the communication line. 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. [0004] Incidentally, since a failure of the elevator causes trouble for many users, it is necessary to quickly find the cause of the failure and prevent the failure from occurring again. In particular, breakdowns that cause passengers to be trapped in elevators not only cause extreme anxiety for passengers, but also may lead to 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 longer, and the investigation of the cause is delayed accordingly. An object of the present invention is to solve the above-mentioned 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 types of elevator data from an elevator control unit and transmits the data to a monitoring center device when an elevator failure is detected. And a remote monitoring device for an elevator that transmits a data transmission request relating to a failure from the failure diagnosis device, wherein the remote monitoring device includes the remote monitoring device and the monitoring center device.
Alternatively, use one of the above-mentioned fault diagnosis devices for one telephone line
And a plurality of communication units having different communication speeds, and data to the failure diagnosis device.
If the select high-speed communication unit of the communication unit during transmission
Both of the above-mentioned messages are sent when data is sent to the monitoring center device.
Communication unit selecting means for selecting a low-speed communication unit among the communication units ;
It connected the monitoring by the telephone line connecting portion required data by using the communication unit selected by communication unit selecting means
To either the center device or the failure diagnosis device
Transmitting means for transmitting via a telephone line . [0007] Communication with the monitoring center device, such as notification of an elevator failure, is performed by a communication unit having a low communication speed. The data transmission request from the failure diagnosis device is confirmed by switching to the high-speed communication unit, and data is transmitted by the switched high-speed communication unit. By using a high-speed communication unit, a large amount of data required to determine the cause of the failure can be transmitted in a short time, and the cause of the failure can be quickly found. The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a block diagram of an elevator remote monitoring device according to an embodiment of the present invention. In this figure, reference numeral 1 denotes an elevator, which shows a car 1a, a rope 1b, a counterweight 1c, and pulleys 1d and 1e. 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. 3
Is a remote monitoring device for the elevator 1 and is installed in a building where the elevator 1 is provided. Reference numeral 4 denotes a monitoring center device, which 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 connection unit 31 for connecting a telephone line between an external device such as the monitoring center device 4 and the remote failure diagnosis device 5 and the remote monitoring device 3, a low speed communication unit 32, and a high speed communication. A unit 33, a switch 34 for switching between them, a communication command unit 35 for performing 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 components, required components are configured using a microcomputer. The low-speed communication unit 32 performs communication at a speed of, for example, 300 BPS (bits / second), and the high-speed communication unit 33 performs communication at a speed of, for example, 1200 BPS. The communication speed of the telephone line is 300 BPS or more.
It is used up to about 28,800 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, and a diagram showing a protocol for confirming a communication destination between the remote monitoring device 3 and the monitoring center 4 in FIG. A description will be given with reference to the flowchart of FIG. The remote monitoring device 3 constantly monitors the elevator 1 by the failure detection unit 36. The communication command unit 35 determines whether a failure detection signal has been output from the failure detection unit 36 (procedure S ₁ shown in FIG. 2), and then the telephone line connection unit 31 determines whether a signal has been received from outside (belling). (Procedure S ₂ ). Here, the failure detection unit 36
Detects that a failure has occurred in the elevator 1 by inputting, for example, a signal indicating that a safety device of the elevator 1 has been activated, a signal indicating that the elevator 1 has stopped at a high speed, and the like. The command unit 35 instructs the telephone line connection unit 31 to connect the telephone line with the monitoring center device 4. The telephone line connection unit 31 makes a dial call to the monitoring center device 4 (step S ₃ ) and waits for a response from the monitoring center device 4 (step S ₄ ). If there is a response from the monitoring center device 4, the communication command section 35 selects the low-speed communication unit 32 actuates the switch 34, 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). The process of confirming the communication destination is for maintaining confidentiality, and is performed by means shown in FIGS. That is, the communication command unit 35 transmits to the monitoring center device 4 through a telephone line connecting portion 31 the encrypted identification signal a shown in FIG. 3 (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, the monitoring center device 4 transmits an encrypted response signal b shown in FIG. 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 determines that it has confirmed the communication destination (Step S ₇ shown in FIG. 2), in turn transmits the normal signal c confirmation to the monitoring center device 4 (Step S ₆₃ shown in FIG. 4), FIG. 2
Proceeds to process step S ₈ shown in the fault data (data indicating the management number and fault condition of failure lift) reports the failure to send to the monitoring center device 4. When the response signal b transmitted from the monitoring center device 4 is not a correct signal, the communication command unit 35
Alternatively, if the response signal b is not received within a predetermined time,
It determines that the destination can not be confirmed in Step S ₇ shown in, instructs the opening of the telephone line to the telephone line connections 31 as an abnormal termination without sending a confirmation normal signal c. On the other hand, also in the monitoring center device 4, if the confirmation normal signal c is not received within a predetermined time, the telephone line is opened as abnormal termination. Meanwhile, the telephone line connection unit 31 is located Bell adhesion in the processing of Step S ₂ (typically, reception of signals from the monitoring center device 4) connected to the telephone line and determines that (Step S
₉ ) This is notified to the communication command unit 35, and the communication command unit 35
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). Processing of the communication destination confirmation is remote monitoring device 3 becomes the receiving side, which sends out an identification signal always previously remote monitoring device 3 is the same as the process in Step S _6. If the communication destination in the processing steps S ₁₁ is judged to have been confirmed (Step S _12), the communication command unit 35 is monitoring center device 4
The processing of the communication (command communication) between the performing (Step S _13). [0014] If the communication destination in the process of steps S ₁₂ is judged not to be confirmed, incoming in the communication command unit 35 instructions S ₂ is determined to be high possibility of incoming transmissions from the remote diagnostic device 5, the switch 34, the high-speed communication unit 33 is selected,
The communication mode of the remote monitoring device 3 is set to high-speed communication mode (Step S _14). Here, the remote failure diagnosis device 5 will be described. The monitoring center device 4 performs communication in the low-speed communication mode, but the remote failure diagnosis device 5 can perform communication in either the low-speed communication mode or the high-speed communication mode. On the other hand, many remote monitoring devices are not only provided with a low-speed communication unit and a high-speed communication unit as in the above-described embodiment, but are also capable of performing communication only in a low-speed mode. For this reason, the telephone number and the communication mode (the low-speed communication mode only for the low-speed communication mode, and the high-speed communication mode for both the communication modes) are filed in the remote failure diagnosis device 5 for each remote monitoring device. 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 extracts the telephone number and the communication mode of the remote monitoring apparatus of the transmission partner from the file, and performs transmission in the 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
Automatically causes the remote failure diagnostic device 5 to transmit a data request command, or the operator manually performs this. As shown in FIG. 1, the remote monitoring device 3 of this embodiment includes a low-speed communication unit 32 and a high-speed communication unit 33, so that a data request from the remote failure diagnosis device 5 is made in a 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 determined that confirmation is not possible. 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 processes are performed in step S
₁₁ is the same as the processing of S _12. When it is confirmed that the transmission destination is the remote failure diagnosis device 5, the communication command unit 35 issues a command to the elevator control unit 2 and outputs the failure detection data transmitted to the failure detection unit 36 earlier. (Safety device activation signal, high-speed sudden stop signal, etc.) and data related to the failure of the elevator 1, such as the 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. and transmits to the remote diagnosis apparatus 5 through the section 31 (Step S _17). If the transmission destination is not confirmed, the communication command unit 35 opens the telephone line by the telephone line connection unit 31 and ends the communication. As described above, in this embodiment, when a request for transmission of data related to a failure is made from the remote failure diagnosis device, 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 determined and the necessary measures can be taken. Further, since it is not necessary to change the existing device, it can be implemented easily and inexpensively. In the above embodiment, an example in which the monitoring center device and the remote failure diagnosis device are provided side by side has been described. However, failure diagnosis of a failure elevator can be performed only for important failures or complicated failures. As such, the remote fault diagnosis device can be shared by several monitoring center devices. As described above, according to the present invention, a plurality of communication units having different communication speeds are provided in a remote monitoring device, and a high-speed communication unit is selected to request a data transmission from a failure diagnosis device. Is determined, and the required data is transmitted to the failure diagnosis device using the high-speed communication unit, so that the data can be transmitted in a short time, and the cause of the failure can be quickly determined and the required data can be determined. Action can be taken.

BRIEF DESCRIPTION OF THE 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 the 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. [Description of Signs] 1 elevator 2 elevator control device 3 remote monitoring device 4 monitoring center device 5 remote failure diagnosis device 31 telephone line connection unit 32 low speed communication unit 33 high speed communication unit 34 switch 35 communication command unit 36 failure detection unit 37 failure information Memory

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Yamazaki 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd. (56) References JP-A-6-255931 (JP, A) JP-A Heisei 4-89778 (JP, A) (58) Fields studied (Int. Cl. ⁷ , DB name) B66B 3/00 B66B 5/00

Claims (1)

(57) [Claims] [Claim 1] Various data of an elevator are extracted from an elevator control unit, and when a failure of the elevator is detected, the data is transmitted to the monitoring center device, and the failure diagnosis device detects the failure. in elevator remote monitoring system that transmits this when there is associated data transmission request, to the remote monitoring device, the monitoring sensor and the remote monitoring device
Either the monitoring device or the fault diagnosis device
A telephone line connection unit selectively connected via a speech line; a plurality of communication units having different communication speeds ;
Select high-speed communication unit among the above communication units when transmitting data
Before sending data to the monitoring center device.
Before serial communication unit selecting means for selecting the communicating portion of the low speed of the communication unit, which is connected required data by using the communication unit selected by the telephone line connection unit by the communication unit selecting means
Either the monitoring center device or the failure diagnosis device
And a transmission means for transmitting data via the telephone line to the elevator.