JP2006335542A - Remote monitoring system for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote monitoring system for an elevator capable of facilitating conversations between an elevator car and a center by reducing effects of delay of audio signals. <P>SOLUTION: An elevator communications apparatus 4 is connected with a center side communications apparatus 5 via a digital line network 7 and a telephone line network 6. When abnormality signals and image signals transmitted from the elevator communications apparatus 4 to the center side communications apparatus 5 via the digital line network 7 at the time of abnormalities of the elevator are not transmitted, or when the audio signals are delayed beyond predetermined time, a transmitting circuit network is switched to transmit each signal via the telephone line network 6, so as to facilitate conversations between the elevator car and the center. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to an elevator remote monitoring system that connects an elevator car and a center and transmits audio and video in the car to the center.

In a conventional elevator remote monitoring system, the elevator car and the center are a high-speed digital line (for example, an IP network) with a low line usage fee and a telephone line that is resistant to disasters, although the line usage fee is expensive. Connected by
In this case, a high-speed digital line with a low line usage fee is usually used. If a digital line is damaged due to a disaster or failure, the line usage fee is expensive, but the telephone line is strong against disasters. Had to use. The line switching is performed depending on whether an abnormal signal, an image signal, and an audio signal can be transmitted from the car to the center.
In Patent Document 1, the remote monitoring device on the elevator device B side is connected to the receiving device on the elevator manager side by a digital communication network, and the digital communication network is connected to the analog communication network via an A / D converter. The analog communication network is connected to a remote monitoring device on another elevator apparatus A side. The remote monitoring device on the elevator apparatus A side is connected to the elevator via the analog communication network and the digital communication network. It is shown that the remote monitoring device on the elevator apparatus B side is connected to the receiving device on the elevator manager side via the digital communication network, connected to the receiving device on the manager side.

Japanese Patent Laying-Open No. 2003-300679 (pages 4-6, FIG. 1)

In the conventional elevator remote monitoring system as described above, the connection line is changed only by whether or not an abnormal signal or image signal or audio signal can be transmitted from the car to the center. Therefore, even if the audio signal can be transmitted, the audio signal is delayed. However, there was a problem that it was difficult to communicate between the elevator car and the center.
In the thing of patent document 1, it connects to a remote monitoring apparatus and a receiver via a digital communication line network or a digital communication line network and an analog communication line network, About the failure of the digital communication circuit network which passes without fail It was not mentioned.

  The present invention has been made in order to solve the above-described problems, and provides an elevator remote monitoring system that can easily talk between an elevator car and a center while reducing the influence of delay of an audio signal. The purpose is to get.

 In the elevator remote monitoring system according to the present invention, the elevator side communicator disposed on the elevator side and the center side communicator disposed on the center side for monitoring the elevator are connected by a digital line network and a telephone line network, In an elevator remote monitoring system that transmits and receives audio signals in an elevator car between an elevator-side communication device and a center-side communication device, the elevator-side communication device transmits and receives audio signals to and from the center-side communication device via a digital network. In addition, a transmission / reception control circuit is provided for switching the connection circuit network so that the audio signal is transmitted / received via the telephone line network when the audio signal is delayed beyond a certain time.

  As described above, according to the present invention, an elevator-side communication device arranged on the elevator side and a center-side communication device arranged on the center side for monitoring the elevator are connected by a digital line network and a telephone line network, and the elevator In an elevator remote monitoring system that transmits and receives audio signals in an elevator car between a side communication device and a center side communication device, the elevator side communication device transmits and receives audio signals to and from the center side communication device via a digital network. In addition, a transmission / reception control circuit is provided for switching the connection circuit network so that the audio signal is transmitted / received via the telephone line network when the audio signal is delayed over a predetermined time. There is an effect that it is easy to avoid difficult situations.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing an elevator remote monitoring system according to Embodiment 1 of the present invention.
In FIG. 1, an elevator control panel 1 that controls the operation of an elevator, an elevator intercom 2 that is used for conversation with the center, and an in-car camera 3 that captures an image of the car are connected to an elevator-side communicator 4. Yes. The center side communication device 5 is connected to the elevator side communication device 4 by a telephone line network 6 and a digital line network 7. An abnormality display 8, a headset 9, a monitor 10, and a communication end button 11 are connected to the center side communication device 5.
The elevator side communication device 4 is configured as follows.
The voice digitizing circuit 12 is connected to the car interphone 2, the image digitizing circuit 13 is connected to the car camera 3, and the transmission / reception control circuit 14 is the elevator control panel 1, the voice digitizing circuit 12, and the image digitizing. The circuit 13 is connected. The telephone line I / F 15 is connected to the transmission / reception control circuit 14 and the telephone line network 6, and the digital line I / F 16 is connected to the transmission / reception control circuit 14 and the digital line network 7.

The center side communication device 5 is configured as follows.
The voice digitizing circuit 17 is connected to the headset 9, the image digitizing circuit 18 is connected to the monitor 10, and the transmission / reception control circuit 19 communicates with the abnormality display 8, the voice digitizing circuit 17, and the image digitizing circuit 18. It is connected to the end button 11. The telephone line I / F 20 is connected to the transmission / reception control circuit 19 and the telephone line network 6, and the digital line I / F 21 is connected to the transmission / reception control circuit 19 and the digital line network 7.
FIG. 2 is a flowchart showing the operation of the elevator remote monitoring system according to Embodiment 1 of the present invention.

Next, the operation will be described.
When an abnormality occurs in the elevator, an abnormality signal is transmitted from the elevator control panel 1 to the transmission / reception control circuit 14 of the elevator-side communication device 4. This abnormal signal is transmitted from the transmission / reception control circuit 14 to the telephone line I / F 20 of the center side communication device 5 connected by the telephone line network 6 via the telephone line I / F 15 of the elevator side communication device 4, or on the elevator side The data is transmitted to the digital line I / F 21 of the center side communication device 5 connected by the digital line network 7 through the digital line I / F 16 of the communication device 4.
The abnormality signal transmitted to the telephone line I / F 20 or the digital line I / F 21 of the center side communication device 5 is transmitted to the transmission / reception control circuit 19 of the center side communication device 5, and the transmission / reception control circuit 19 displays an abnormality on the abnormality display 8. Display the signal.

The analog voice signal of the intercom 2 in the car is transmitted to the voice digitizing circuit 12 of the elevator side communication device 4 and is digitally compressed by the voice digitizing circuit 12, and as a digital voice signal, the transmission / reception control circuit 14 of the elevator side communication device 4. Sent to. The digital audio signal is transmitted from the transmission / reception control circuit 14 to the telephone line I / F 20 of the center side communication device 5 connected to the telephone line network 6 via the telephone line I / F 15 of the elevator side communication device 4 or the elevator. The data is transmitted to the digital line I / F 21 of the center side communication device 5 connected to the digital line network 7 through the digital line I / F 16 of the side communication device 4.
The digital audio signal transmitted to the telephone line I / F 20 or the digital line I / F 21 of the center side communication device 5 is transmitted to the transmission / reception control circuit 19 of the center side communication device 5, and the transmission / reception control circuit 19 converts the digital audio signal. The data is transmitted to the voice digitizing circuit 17, digitally expanded by the voice digitizing circuit 12, and transmitted to the headset 9 as an analog voice signal.
As described above, the sound of the car intercom 2 is transmitted to the headset 9. The voice of the headset 9 is transmitted to the car intercom 2 through the reverse route.

Further, the analog video signal of the car camera 3 is transmitted to the image digitizing circuit 13 of the elevator side communication device 4, digitally compressed by the sound digitizing circuit 13, and transmitted and received by the elevator side communication device 14 as a digital image signal. It is transmitted to the control circuit 14. This digital image signal is transmitted from the transmission / reception control circuit 14 to the telephone line I / F 20 of the center side communication device 5 connected by the telephone line network 6 via the telephone line I / F 15 of the elevator side communication device 4 or the elevator. The data is transmitted to the digital line I / F 21 of the center side communication device 5 connected by the digital line network 7 through the digital line I / F 16 of the side communication device 4.
The digital image signal transmitted to the telephone line I / F 20 or the digital line I / F 21 of the center side communication device 5 is transmitted to the transmission / reception control circuit 19 of the center side communication device 5, and the transmission / reception control circuit 19 converts the digital image signal into the digital image signal. It is transmitted to the image digitizing circuit 18, is digitally expanded by the image digitizing circuit 18, and is transmitted to the monitor 10 as an analog image signal.
As described above, the image of the car camera 3 is transmitted to the monitor 10.

When the communication end button 11 is pressed, a communication end signal is transmitted to the transmission / reception control circuit 19 of the center side communication device 5. This communication end signal is transmitted from the transmission / reception control circuit 19 to the telephone line I / F 15 of the elevator side communication device 4 connected by the telephone line network 6 via the telephone line I / F 20 of the center side communication device 5 or It is transmitted to the digital line I / F 16 of the elevator side communication device 4 connected by the digital line network 7 via the digital line I / F 21 of the side communication device 5.
The communication end signal transmitted to the telephone line I / F 15 or the digital line I / F 16 of the elevator side communication device 4 is transmitted to the transmission / reception control circuit 14 of the elevator side communication device 5.
In this way, communication between the elevator side communication device 4 and the center side communication device 5 is performed.

Next, switching between the telephone line network 6 and the digital line network 7 will be described with reference to the flowchart of FIG.
When an abnormal signal is received from the elevator control panel 1 (step S1), the elevator side communication device 4 is connected to the center side communication device 5 through the digital network 7 (step S2), and the abnormal signal, audio signal, and image signal are transmitted. Transmission / reception is performed (steps S3 to S5). When a communication end signal is received from the center (step S6), the connection is disconnected (step S7).
When an abnormal signal cannot be transmitted during connection (step S3), an image signal cannot be transmitted (step S4), or a delay of the audio signal is not within a certain time (for example, 0.4 seconds) (step) If the connection line of all signals is the digital line network 7 (step S8) in S5), the connection of all signals is changed to the telephone line network 6 (step S9). Also, when an abnormal signal cannot be transmitted during connection (step S3), an image signal cannot be transmitted (step S4), or the delay of the audio signal is not within a certain time (for example, 0.4 seconds). If the connection line of all signals is not the digital line network 7 (step S8) (step S5), all signals are reconnected by the telephone line network 6 (step S10).
The connection network is changed and reconnected by the transmission / reception control circuit 14 of the elevator-side communication device 4. The transmission / reception control circuit 14 transmits, for example, a signal, and a confirmation signal is received within a certain time from the partner side. If it does not come, it is determined that transmission is not possible. In the case of an audio signal, check the delay time.
As described above, usually when a high-speed digital circuit network (for example, IP network) is used with a low line usage fee, and the digital network is troubled by a disaster or failure, the line usage fee is high. However, a disaster-resistant telephone network is used.

  According to the first embodiment, when an abnormal signal cannot be transmitted during connection, an image signal cannot be transmitted, or a delay of an audio signal is not within a certain time (for example, 0.4 seconds). Since all the signal connections are changed to the telephone line network or reconnected to the telephone line network, it is easy to avoid a situation in which conversation is difficult due to a delay of the voice signal.

Embodiment 2. FIG.
The configuration of the second embodiment is the same as that in FIG. 1 and will be described with reference to FIG.
FIG. 3 is a flowchart showing the operation of the elevator remote monitoring system according to Embodiment 2 of the present invention.

Next, switching between the telephone line network 6 and the digital line network 7 will be described using the flowchart of FIG.
When an abnormal signal is received from the elevator control panel 1 (step S1), the elevator-side communication device 4 is connected to the center-side communication device 5 via the digital line 7 (step S2), and transmits / receives the abnormal signal, audio signal, and image signal. (Steps S3 to S5). When the communication end is received from the center (step S6), the connection is disconnected (step S7).
If the abnormal signal cannot be transmitted during connection (step S3) and the connection line of the abnormal signal is the digital circuit network 7 (step S11), the connection of the abnormal signal is changed to the telephone line network 6 (step S11). Step S12). If the abnormal signal cannot be transmitted during connection (step S3) and the connection line of the abnormal signal is not the digital circuit network 7 (step S11), the abnormal signal is reconnected to the telephone line network 6. (Step S13).

  If the image signal cannot be transmitted during connection (step S4) and the connection line of the image signal is the digital circuit network 7 (step S14), the connection of the image signal is changed to the telephone line network 6 (step S14). Step S15). If the image signal cannot be transmitted during connection (step S4) and the connection line of the image signal is not the digital line network 7 (step S14), the image signal is reconnected to the telephone line network 6. (Step S16).

When the delay of the audio signal is not within a certain time (for example, 0.4 seconds) during connection (step S5) and the connection line of the audio signal is the digital circuit network 7 (step S17), the audio signal The signal connection is changed to the telephone network 6 (step S18). Further, when the delay of the audio signal is not within a certain time (for example, 0.4 seconds) during connection (step S5) and the connection line of the audio signal is not the digital circuit network 7 (step S17). The voice signal is reconnected through the telephone line network 6 (step S19).
The connection network is changed and reconnected by the transmission / reception control circuit 14 of the elevator-side communication device 4. The transmission / reception control circuit 14 transmits, for example, a signal, and a confirmation signal is received within a certain time from the partner side. If it does not come, it is determined that transmission is not possible. In the case of an audio signal, check the delay time.
As described above, when a high-speed digital circuit network (for example, an IP network) is normally used and the digital circuit network is troubled due to a disaster or failure, the line usage fee is Use an expensive but disaster-resistant telephone network.

  According to the second embodiment, when an abnormal signal cannot be transmitted during connection, or when an image signal cannot be transmitted, or when a delay of an audio signal is not within a certain time (for example, 0.4 seconds), Is changed to the telephone line network or reconnected to the telephone line network, so that it is easy to avoid a situation where conversation is difficult due to a delay of the voice signal.

Embodiment 3 FIG.
The configuration of the third embodiment is the same as that in FIG. 1 and will be described with reference to FIG.
FIG. 4 is a flowchart showing the operation of the elevator remote monitoring system according to Embodiment 3 of the present invention.

Next, switching between the telephone line network 6 and the digital line network 7 will be described with reference to the flowchart of FIG.
Steps S1 to S7 and Steps S11 to S16 in FIG. 4 are the same processes as Steps S1 to S7 and Steps S11 to S16 in FIG.

The processing in steps S17, S18, and S19 in FIG. 3 is changed to the processing in steps S20, S21, and S22 in FIG.
That is, when the delay of the audio signal is not within a certain time (for example, 0.4 seconds) during connection (step S5), and the connection line of the audio signal is only the digital circuit network 7 (step S20). Changes the connection of the audio signal to the connection of both the digital network 7 and the telephone network 6 (step S21).
Further, when the delay of the audio signal is not within a certain time (for example, 0.4 seconds) during connection (step S5) and the connection line of the audio signal is not only the digital circuit network 7 (step S20). Reconnects the voice signal in both the digital circuit network 7 and the telephone network 6 (step S22).
The connection network is changed and reconnected by the transmission / reception control circuit 14 of the elevator-side communication device 4. The transmission / reception control circuit 14 transmits, for example, a signal, and a confirmation signal is received within a certain time from the partner side. If it does not come, it is determined that transmission is not possible. In the case of an audio signal, check the delay time.
As described above, when a high-speed digital circuit network (for example, an IP network) is normally used and the digital circuit network is troubled due to a disaster or failure, the line usage fee is Use an expensive but disaster-resistant telephone network.

  According to the third embodiment, during the connection, when the delay of the audio signal is not within a certain time (for example, 0.4 seconds), the audio signal depends on whether the connection line of the audio signal is only a digital circuit network. Since the signal connection is changed to the connection of both the digital line network and the telephone line network, or the connection is reconnected to both, it is easier to avoid a situation in which conversation is difficult due to the delay of the voice signal.

It is a block diagram which shows the elevator remote monitoring system by Embodiment 1- Embodiment 3 of this invention. It is a flowchart which shows operation | movement of the elevator remote monitoring system by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the elevator remote monitoring system by Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the elevator remote monitoring system by Embodiment 3 of this invention.

Explanation of symbols

1 Elevator control panel, 2 car intercom, 3 car camera,
4 Elevator side communication device, 5 Center side communication device, 6 Telephone line network,
7 Digital network, 8 Abnormal display, 9 Headset, 10 Monitor,
11 Communication end button, 12 Voice digitizing circuit,
13 Image digitizing circuit, 14, 19 Transmission / reception control circuit,
15, 20 Telephone line I / F, 16, 21 Digital line I / F,
17 Voice digitizing circuit, 18 Image digitizing circuit.

Claims (3)

  An elevator-side communicator disposed on the elevator side and a center-side communicator disposed on the center side for monitoring the elevator are connected by a digital line network and a telephone line network, and the elevator-side communicator and the center-side communication are connected. In the elevator remote monitoring system for transmitting and receiving an audio signal in an elevator car to and from an elevator, the elevator-side communication device transmits and receives the audio signal to and from the center-side communication device via a digital network. An elevator remote monitoring system comprising a transmission / reception control circuit for switching a connection circuit network so as to transmit / receive the audio signal via the telephone line network when the signal is delayed over a predetermined time.   The transmission / reception control circuit transmits an abnormal signal and an image signal in an elevator car to the center side communication device via the digital circuit network, and when the abnormal signal or the image signal is not transmitted, the signal that is not transmitted. 2. The elevator remote monitoring system according to claim 1, wherein the connection circuit network is switched so as to be transmitted through the telephone line network.   The transmission / reception control circuit switches the connection circuit network so that the audio signal is transmitted / received through both the telephone network and the digital circuit network when the audio signal is delayed over a predetermined time. The elevator remote monitoring system according to claim 1, wherein:

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