JP2009284254A - Report apparatus and elevator remote monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restart real-time telephone speech immediately after restoration even when the interruption of communication is caused in an elevator remote monitoring system. <P>SOLUTION: Speech voice between a passenger in an elevator cage 120 and the monitoring person of a monitoring center 150 is transmitted/received via a telephone network 140 by a voice packet 192. The voice of the passenger to an intercom 121 is set in the voice packet 192 as voice data by a VoIP processing part 132, and transmitted from a modem 134 to the monitoring center 150 by a data communication processing part 133. The data communication processing part 133 decides, when the voice packet 192 is not received from the monitoring center 150 for predetermined time, that the interruption of the communication is caused in the telephone network 140, and discards the voice packet 192 without being output to the modem 134. Thus, the data communication processing part 133 can immediately make the modem 134 transmit the real-time voice packet 192 in restoration of the interruption of the communication. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a notification device and an elevator remote monitoring system that perform voice communication, for example.

In an elevator remote monitoring system for remotely monitoring an elevator from a monitoring center, when an elevator stops and a confinement accident occurs in which a passenger is trapped in the elevator car, an interphone in the elevator car and an IP telephone (IP: Internet Protocol) in the monitoring center ) Between the passengers in the elevator car and the supervisor at the monitoring center.
Voices of passengers and supervisors are converted into voice data, and voice packets (IP packets) are transmitted via a low-speed line (data communication speed: about 9.6 K to 64 Kbps) such as a telephone line or a wireless network (an example of a communication network). ).
Voice communication technology using IP packets is called “VoIP (Voice over Internet Protocol)”.

  In general, call voice (hereinafter referred to as voice packet) converted into digital data and packetized by VoIP technology must be transmitted at regular intervals to maintain a normal call. When the arrival of the voice packet is delayed, the voice cannot be reproduced during that time, and the voice is interrupted.

On the other hand, in communication over a communication network such as a telephone line or a wireless network, communication is interrupted depending on the noise of the communication path and the usage status of the base station.
When communication is interrupted, the voice packet is not received by the other party and transmission is not completed. Therefore, the retransmission process is repeated by the communication device (modem, PHS [registered trademark]), and the passenger is in the process of repeating the retransmission process. And the voice of the call with the supervisor are sequentially stored as voice packets.
When the interruption of communication is recovered, old voice packets that have been retransmitted and stored are sequentially transmitted and received by the other party. During this time, the call voice between the passenger and the supervisor is also accumulated and transmitted as an old voice packet. In VoIP, an old voice packet is discarded without being reproduced on the receiving side according to a predetermined condition.
For this reason, even if communication interruption is recovered, new voice packets cannot be transmitted in real time until transmission of old voice packets is completed. That is, even if the interruption of communication is recovered, it takes time until the passenger and the supervisor can resume the call normally.
In a voice communication system using VoIP, including an elevator remote monitoring system, it is desired that a real-time call be resumed early when communication is interrupted in the communication network and then recovered.
JP 2008-105851 A

  For example, in a voice communication system (for example, an elevator remote monitoring system) using VoIP, an object of the present invention is to enable a real-time call to be resumed immediately after recovery even if communication is interrupted. .

  The notification device of the present invention is a notification device that transmits an audio packet including audio data to a specific communication device via a communication network, and inputs an audio signal from a microphone and converts the input audio signal into audio data. A voice input unit that generates a voice packet including voice data, a communication determination unit that determines whether a communication delay has occurred in the communication network, and a communication delay that has not occurred in the communication network by the communication determination unit If it is determined, the voice packet generated by the voice input unit is transmitted to the specific communication device via the communication network, and the communication determination unit determines that a communication delay has occurred in the communication network. A voice transmission unit that discards the voice packet generated by the voice input unit.

  According to the present invention, for example, in a voice communication system (for example, an elevator remote monitoring system) using VoIP, even if communication is interrupted, voice packets are not accumulated during that time, so that a real-time call is made immediately after recovery. Can be resumed.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an elevator remote monitoring system 100 according to the first embodiment.
The configuration of the elevator remote monitoring system 100 according to Embodiment 1 will be described below with reference to FIG.

The elevator remote monitoring system 100 is a system for monitoring an elevator installed in each of a plurality of buildings in various locations in a remote monitoring center 150.
The abnormality of the elevator detected by the elevator control device 110 of each building is notified to the monitoring center 150 by the notification device 130. At this time, the passengers in the elevator car 120 can talk with the monitoring personnel of the monitoring center 150 using the interphone 121 attached in the elevator car 120.
A voice signal 191 of a call between a passenger and a supervisor is included in a voice packet (IP packet) as voice data, and is transmitted / received via the telephone network 140 by VoIP.
The elevator remote monitoring system 100 is an example of a voice communication system in which voice communication is performed using VoIP.

In the elevator car 120, a call button 122 that is pressed when a passenger calls a monitor of the monitoring center 150 and an interphone 121 that is used when the passenger calls the monitor of the monitoring center 150 are installed.
The intercom 121 includes a microphone (hereinafter referred to as a microphone) that inputs a passenger's call voice and outputs the voice signal 191 and a speaker that outputs a supervisor's call voice.

The elevator control device 110 is a device that controls the elevator car 120.
For example, the elevator control device 110 moves the elevator car 120 up and down. In addition, for example, the elevator control device 110 stops the elevator car 120 during raising and lowering of the elevator car 120 or breaks the door of the elevator car 120 based on the measured values of various sensors attached to the elevator device (including the elevator car 120). Detecting various abnormalities in the elevator apparatus. Then, the elevator control device 110 outputs an abnormality notification 193 (signal, data) indicating the detected abnormality to the notification device 130. Further, when the call button 122 in the elevator car 120 is pressed and a call signal 195 is input, the elevator control device 110 outputs an abnormality notification 193 indicating that the call button 122 is pressed to the notification device 130.

  The notification device 130 includes an abnormal reception processing unit 131, a VoIP processing unit 132, and a data communication processing unit 133, and transmits / receives voice calls 192 between the passengers in the elevator car 120 and the monitoring personnel of the monitoring center 150 using voice packets 192.

  The abnormality reception processing unit 131 receives the abnormality notification 193 output from the elevator control device 110, generates an abnormality notification packet 194 (IP packet) including the contents of the input abnormality notification 193, and generates the generated abnormality notification packet 194. Is output to the data communication processing unit 133.

The VoIP processing unit 132 (an example of a voice input unit) inputs a passenger's voice signal 191 output from the interphone 121, converts the input voice signal 191 into voice data (digital data), and includes voice data. A packet 192 is generated, and the generated voice packet 192 is output to the data communication processing unit 133.
In addition, the VoIP processing unit 132 receives the voice packet 192 including the voice data of the supervisor transmitted from the monitoring center 150, received by the modem 134, and output from the data communication processing unit 133. Then, the VoIP processing unit 132 converts the audio data included in the input audio packet 192 into an audio signal 191, and outputs the audio signal 191 to the intercom 121.

The data communication processing unit 133 (an example of a voice transmission unit, a voice reception unit, and a communication determination unit) inputs the abnormality notification packet 194 output from the abnormality reception processing unit 131 and the voice packet 192 output from the VoIP processing unit 132. The inputted abnormality notification packet 194 and voice packet 192 are output to the modem 134 and transmitted to the monitoring center 150 via the telephone network 140 (also called a telephone line or a wireless network).
In addition, the data communication processing unit 133 inputs the voice packet 192 transmitted from the monitoring center 150 via the telephone network 140 from the modem 134 and outputs the input voice packet 192 to the VoIP processing unit 132.

  The modem 134 is an example of a communication device used for data communication using the telephone network 140 as a communication network. The modem 134 modulates transmission data (for example, a voice packet 192) from a digital signal to an analog signal and sends the modulated data to the telephone network 140. Data received from the telephone network 140 (eg, voice packet 192) is demodulated from an analog signal to a digital signal. Instead of the modem 134, for example, PHS (registered trademark) may be used.

  The telephone network 140 is an example of a communication network through which voice packets 192 are transmitted and received, and other communication networks such as the Internet and a LAN may be used instead of the telephone network 140.

  The monitoring center 150 includes a communication device 151, a central monitoring device 152, and an IP telephone 153. The monitoring center 150 centrally monitors the elevators of each of a plurality of buildings, and when passengers in the elevator car 120 and the monitoring center 150 monitor when an abnormality occurs in the elevator, Are transmitted and received by voice packets 192.

The communication device 151 performs data communication using the telephone network 140 as a communication network.
For example, the communication device 151 receives the abnormality notification packet 194 and the voice packet 192 transmitted from the notification device 130 via the telephone network 140, outputs the received abnormality notification packet 194 to the centralized monitoring device 152, and receives the received voice. The packet 192 is output to the IP telephone 153.
Further, for example, the communication device 151 inputs a voice packet 192 including the voice data of the supervisor from the IP telephone 153, and transmits the input voice packet 192 to the notification device 130 via the telephone network 140.

The centralized monitoring device 152 is a computer including a display device, a keyboard, a mouse, and the like, and is used by a monitor.
For example, when the abnormality notification packet 194 is input from the communication device 151, the centralized monitoring device 152 notifies the monitoring staff of the occurrence of an abnormality in the elevator by outputting a message to the display device, turning on an LED, outputting a warning sound, or the like.

The IP telephone 153 (an example of a specific communication device, a specific reception unit, and a specific output unit) is a telephone that includes a microphone, a speaker, and a VoIP processing unit and performs a voice call using VoIP.
For example, the VoIP processing unit of the IP phone 153 inputs the voice of the supervisor as a voice signal through a microphone, converts the input voice signal into voice data, and generates a voice packet 192 including the voice data. The voice packet 192 is output to the communication device 151.
Further, for example, the VoIP processing unit of the IP telephone 153 receives the voice packet 192 output from the communication device 151, converts the voice data included in the input voice packet 192 into a voice signal, and transmits the passenger's call voice from the speaker. Output.

  Each device (including the IP telephone 153) constituting the elevator remote monitoring system 100 includes a CPU and a storage device (for example, a magnetic disk device, a semiconductor memory), and the CPU and the storage device perform each process described in the embodiment. Run with. The storage device of each device stores various data used in the processing of each device, such as an audio signal 191, an audio packet 192, an abnormality notification 193, and an abnormality notification packet 194. The OS and the program that indicates the processing method of each device and each unit (“˜ unit”) described in the embodiments are stored in a storage device, and each program is executed by the CPU and the OS.

FIG. 2 is a flowchart showing the elevator remote monitoring method according to the first embodiment.
The elevator remote monitoring method in Embodiment 1 is demonstrated below based on FIG.

<S110: Abnormality detection processing>
The elevator controller 110 detects a confinement accident in which the elevator car 120 stops and a passenger is trapped in the elevator car 120.
For example, the elevator control device 110 detects a confinement accident based on the measured values of various sensors attached to the elevator device.
Further, for example, when the passenger in the elevator car 120 presses the call button 122, the elevator control device 110 detects the input of the call signal 195 from the call button 122 as a confinement accident.

<S120: Abnormal output processing>
The elevator control device 110 that has detected the confinement accident outputs an abnormality notification 193 indicating that the confinement accident has occurred to the notification device 130.

<S130: Abnormality notification processing>
The abnormality reception processing unit 131 of the notification device 130 receives the abnormality notification 193 output from the elevator control device 110, generates an abnormality notification packet 194 including the contents of the input abnormality notification 193, and generates the generated abnormality notification packet 194. Is output to the data communication processing unit 133.
The data communication processing unit 133 inputs the abnormality notification packet 194 output from the abnormality reception processing unit 131, and outputs the input abnormality notification packet 194 to the modem 134.
The modem 134 converts the abnormality notification packet 194 output from the data communication processing unit 133 from a digital signal to an analog signal, and transmits the abnormality notification packet 194 converted to an analog signal to the monitoring center 150 via the telephone network 140.

<S140: Line connection processing>
The communication device 151 of the monitoring center 150 receives the abnormality notification packet 194 transmitted from the modem 134 of the notification device 130 via the telephone network 140, converts the received abnormality notification packet 194 from an analog signal to a digital signal, The abnormality notification packet 194 converted into a signal is output to the centralized monitoring device 152.
When the abnormality notification packet 194 is input from the communication device 151, the centralized monitoring device 152 notifies the monitor of the occurrence of the confinement accident by outputting a message to the display device, turning on an LED, outputting a warning sound, or the like.
The supervisor who knows the occurrence of the confinement accident operates the IP telephone 153 to connect the telephone line to the interphone 121 installed in the elevator car 120 where the confinement accident has occurred (call the interphone 121).
The IP telephone set 153 makes a call via the telephone network 140 to the interphone 121 installed in the elevator car 120 where the confinement accident has occurred in response to an operation by the monitoring staff. A call from the IP telephone 153 arrives at the interphone 121 of the elevator car 120 via the telephone network 140, and a call is established between the IP telephone 153 of the monitoring center 150 and the interphone 121 of the elevator car 120. When the call is established, a telephone line is connected between the IP telephone 153 of the monitoring center 150 and the interphone 121 of the elevator car 120 (the telephone line is connected).

<S150: Voice communication processing>
After connecting the telephone line, the supervisor uses the IP telephone 153 to talk with the passengers in the elevator car 120.

The VoIP processing unit of the IP telephone 153 inputs the call voice of the supervisor as a voice signal through a microphone, converts the inputted voice signal into voice data, generates a voice packet 192 including the voice data, and generates the generated voice packet. 192 is output to the communication device 151.
The communication device 151 receives the voice packet 192 output from the IP telephone 153, converts the input voice packet 192 from a digital signal to an analog signal, and reports the voice packet 192 converted to an analog signal via the telephone network 140. To device 130.
The modem 134 of the notification device 130 receives the voice packet 192 transmitted from the communication device 151 of the monitoring center 150 via the telephone network 140, converts the received voice packet 192 from an analog signal to a digital signal, and converts it into a digital signal. The converted voice packet 192 is output to the data communication processing unit 133.
The data communication processing unit 133 inputs the voice packet 192 output from the modem 134 and outputs the input voice packet 192 to the VoIP processing unit 132.
The VoIP processing unit 132 receives the audio packet 192 output from the data communication processing unit 133, converts the audio data included in the input audio packet 192 into an audio signal 191, and converts the audio signal 191 into the interphone 121 of the elevator car 120. Output to.
The intercom 121 receives the audio signal 191 output from the VoIP processing unit 132, and outputs the call voice of the monitoring person from the speaker based on the input audio signal 191 (the monitoring person's audio signal 191).

The intercom 121 of the elevator car 120 inputs the call voice of the passenger as a voice signal 191 through a microphone, and outputs the input voice signal 191 to the VoIP processing unit 132.
The VoIP processing unit 132 receives the audio signal 191 output from the intercom 121 of the elevator car 120, converts the input audio signal 191 into audio data, generates an audio packet 192 including the audio data, and generates the generated audio The packet 192 is output to the data communication processing unit 133.
The data communication processing unit 133 inputs the voice packet 192 output from the VoIP processing unit 132 and outputs the input voice packet 192 to the modem 134.
The modem 134 receives the voice packet 192 output from the data communication processing unit 133, converts the input voice packet 192 from a digital signal to an analog signal, and converts the voice packet 192 converted into an analog signal via the telephone network 140. Transmit to the monitoring center 150.
The communication device 151 of the monitoring center 150 receives the voice packet 192 transmitted from the modem 134 of the notification device 130 via the telephone network 140, converts the received voice packet 192 from an analog signal to a digital signal, and converts it into a digital signal. The converted voice packet 192 is output to the IP telephone 153.
The VoIP processing unit of the IP telephone 153 receives the voice packet 192 output from the communication device 151, converts the voice data included in the input voice packet 192 into a voice signal, and outputs the passenger's call voice from the speaker.

<S160: Line disconnection process>
After the call with the passengers in the elevator car 120 is terminated, the monitoring staff at the monitoring center 150 operates the IP telephone 153 to disconnect the telephone line with the interphone 121 of the elevator car 120 (hang up the telephone).
The IP telephone 153 releases the call established with the interphone 121 of the elevator car 120 in accordance with the operation of the supervisor. When the call is released, the telephone line is disconnected between the IP telephone 153 of the monitoring center 150 and the interphone 121 of the elevator car 120.

  With the above processing, the monitoring center 150 and the passengers in the elevator car 120 can communicate with each other when an elevator confinement accident occurs.

FIG. 3 is a flowchart showing the voice communication method according to the first embodiment.
A voice communication method in which the notification device 130 transmits and receives a voice packet 192 in the voice communication process (S150) of the elevator remote monitoring method described above will be described below with reference to FIG.
Each unit of the reporting device 130 executes each process described below using the CPU.

<S210>
First, the data communication processing unit 133 sets a predetermined value indicating “transmission permitted” (hereinafter referred to as “transmission permitted”) as an initial value in the voice transmission flag. The voice transmission flag is stored in the storage device of the notification device 130.
In the voice transmission flag, “transmission permitted” is set when no communication delay occurs in the telephone network 140 (S221 described later), and “transmission not permitted (predetermined value) when a communication delay occurs in the telephone network 140”. ) ”Is set (S231 described later).
When “transmission permitted” is set in the voice transmission flag, the voice packet 192 generated by the VoIP processing unit 132 is output from the data communication processing unit 133 to the modem 134, and is monitored from the modem 134 via the telephone network 140. 150 (S251 described later).
When “no transmission” is set in the voice transmission flag, the voice packet 192 generated by the VoIP processing unit 132 is discarded by the data communication processing unit 133 (S252 described later).
The communication delay in the telephone network 140 includes a data communication error in which an error has occurred due to the influence of noise generated in the telephone network 140, an overload of a base station device that relays data, and an amount of data transmitted and received via the telephone network 140. This occurs due to the increase in Due to the occurrence of data communication delay in the telephone network 140, the voice packets 192 are not communicated at regular intervals, and the voice is interrupted during a call performed using VoIP.
After S210, the process proceeds to S220.

<S220>
After S210, the data communication processing unit 133 determines whether the voice packet 192 has been input from the modem 134, that is, whether the modem 134 has received the voice packet 192.
When the modem 134 receives the voice packet 192 (YES), the data communication processing unit 133 stores the reception time of the voice packet 192 in the storage device, and the process proceeds to S221.
If modem 134 has not received voice packet 192 (NO), the process proceeds to S230.

<S221>
If the modem 134 receives the voice packet 192 in S220 (YES), the data communication processing unit 133 determines that no communication delay has occurred in the telephone network 140, and sets “transmission permitted” in the voice transmission flag.
After S221, the process proceeds to S222.

<S222>
After S221, the data communication processing unit 133 outputs the voice packet 192 input from the modem 134 to the VoIP processing unit 132.
The VoIP processing unit 132 converts voice data included in the voice packet 192 input from the data communication processing unit 133 into a voice signal 191, outputs the voice signal 191 to the interphone 121, and causes the interphone 121 to output call voice.
After S222, the process proceeds to S240.

<S230>
If the modem 134 has not received the voice packet 192 in S220 (NO), the data communication processing unit 133 determines whether a predetermined time has elapsed since the previous voice packet 192 was received.
If a predetermined time has elapsed since the reception of the previous voice packet 192 (YES), the process proceeds to S231. If a predetermined time has not elapsed since the reception of the previous voice packet 192 (NO), the process proceeds to S240. move on.

<S231>
In S230, when a predetermined time has elapsed since the last reception of the voice packet 192 (YES), the data communication processing unit 133 determines that a communication delay has occurred in the telephone network 140, and sets the voice transmission flag to “not transmit”. A predetermined value indicating “permitted” (hereinafter referred to as “transmission not permitted”) is set.
After S231, the process proceeds to S240.

<S240>
After S222, S230, or S231, the VoIP processing unit 132 determines whether an audio signal 191 is input from the interphone 121, that is, whether a call audio is input to the interphone 121.
If there is a call voice input to the intercom 121 (YES), the process proceeds to S241. If no call voice is input to the interphone 121 (NO), the process returns to S220.

<S241>
If there is a call voice input to the interphone 121 in S240 (YES), the VoIP processing unit 132 converts the voice signal 191 input from the interphone 121 into voice data, and generates a voice packet 192 including the voice data. The generated voice packet 192 is output to the data communication processing unit 133.
After S241, the process proceeds to S250.

<S250>
The data communication processing unit 133 to which the voice packet 192 is input from the VoIP processing unit 132 in S241 determines whether the voice transmission flag indicates “transmission permitted”.
If the voice transmission flag indicates “transmission permitted” (YES), the process proceeds to S251. If the voice transmission flag indicates “transmission not permitted” (NO), the process proceeds to S252.

<S251>
If the voice transmission flag indicates “transmission permitted” in S250 (YES), the data communication processing unit 133 determines that there is no communication delay in the telephone network 140 and outputs the voice packet 192 to the modem 134. The voice packet 192 is transmitted to the monitoring center 150 through the telephone network 140 by the modem 134.
After S251, the process returns to S220.

<S252>
If the voice transmission flag indicates “transmission not permitted” in S250 (NO), the data communication processing unit 133 determines that a communication delay has occurred in the telephone network 140 and does not output the voice packet 192 to the modem 134. Discard it.
After S252, the process returns to S220.

In the above voice communication method, when a communication delay occurs in the telephone network 140 (voice transmission flag = “transmission not permitted”), the voice packet 192 is not output to the modem 134 but is discarded (S252).
Thereby, it is possible to prevent the voice packet 192 from being stored in the storage device as a queue in the storage device while the communication delay occurs in the telephone network 140.
Therefore, when the communication delay caused in the telephone network 140 is eliminated, the voice packet 192 is not accumulated in the modem 134, and the voice packet 192 of the call voice input to the interphone 121 after the elimination of the communication delay is immediately transmitted by the modem 134. Sent.
That is, the data communication processing unit 133 of the notification device 130 continues to discard the generated voice packet 192 while the communication delay occurs in the telephone network 140, thereby eliminating the communication delay generated in the telephone network 140. Immediately, the voice packet 192 can be transmitted in real time, and the real time call can be resumed.

In the above voice communication method, the data communication processing unit 133 detects that the voice packet 192 has not been received for a predetermined time or more as a communication delay of the telephone network 140 (S230). In S230, the voice packet 192 includes a response packet (ACK) (not including voice data) indicating that the voice packet 192 transmitted from the reporting device 130 has been received. Further, the method for detecting the communication delay of the telephone network 140 is not limited to this.
For example, the modem 134 also receives data whose destination is not the notification device 130 and outputs the data to the data communication processing unit 133. Then, instead of the above-described S230, the data communication processing unit 133 sets the communication delay of the telephone network 140 that the modem 134 has not received any data including the data whose destination is not the notification device 130 for a predetermined time or more. It may be detected.
Further, for example, instead of the above S230, the data communication processing unit 133 calls that the number of times that the modem 134 retransmits the voice packet 192 is performed per unit time or a predetermined number or more for the same voice packet 192. You may detect as a communication delay of the network 140.

  In the voice communication method described above, after the VoIP processing unit 132 generates the voice packet 192, the data communication processing unit 133 determines whether a communication delay occurs in the telephone network 140 (S250), and communicates with the telephone network 140. If there is a delay, the voice packet 192 is discarded (S252). However, the processing order is not limited to this.

FIG. 4 is a second flowchart illustrating the voice communication method according to the first embodiment.
As shown in FIG. 4, the VoIP processing unit 132 determines whether a communication delay has occurred in the telephone network 140 (S250) before generating the voice packet 192 in S241, and the communication delay has occurred in the telephone network 140. The voice packet 192 may be generated only when there is not (YES) (S241).
The data communication processing unit 133 does not determine whether communication delay has occurred in the telephone network 140 (S250), and outputs and transmits all voice packets 192 input from the VoIP processing unit 132 to the modem 134 ( S251).

  When a communication delay occurs in the telephone network 140 (NO), the VoIP processing unit 132 discards the voice signal 191 input from the interphone 121 and does not generate a voice packet 192. The process returns to S220.

Similarly to the notification device 130, the communication device 151 and the IP telephone 153 of the monitoring center 150 determine whether a communication delay has occurred in the telephone network 140, and only when no communication delay has occurred in the telephone network 140. The voice packet 192 is transmitted. Further, the communication device 151 and the IP telephone set 153 of the monitoring center 150 discard the voice packet 192 without transmitting or accumulating, or do not generate the voice packet 192 when a communication delay occurs in the telephone network 140. .
For example, the IP telephone 153 includes a VoIP processing unit 132 and a data communication processing unit 133 as with the notification device 130, and the communication device 151 operates as a modem 134. That is, the IP telephone 153 is an example of a notification device.
For example, the IP telephone 153 includes a VoIP processing unit 132, and the communication device 151 includes a data communication processing unit 133 and a modem 134. That is, IP telephone 153 and communication device 151 are examples of a reporting device.

In the first embodiment, the following elevator remote monitoring system 100 has been described.
When it is detected that the voice packet 192 from the other party is not received for a certain period of time while the voice packet 192 is being transmitted by the mutual devices (the modem 134 and the communication device 151) at regular intervals, it is assumed that the communication is interrupted. The transmission of the voice packet 192 is temporarily stopped.
By this means, even when a line that may cause a communication interruption due to noise in the communication path or the usage status of the base station, such as a telephone line or a wireless network, is used, the transmission of the voice packet 192 is detected when the communication interruption is detected. Is stopped, old voice packets 192 are not accumulated in devices (modem, PHS [registered trademark], etc.) on the communication path. When the interruption of communication is recovered, real-time voice packet 192 communication can be immediately performed, and as a result, a normal call can be resumed early.

1 is a configuration diagram of an elevator remote monitoring system 100 according to Embodiment 1. FIG. 3 is a flowchart showing an elevator remote monitoring method according to the first embodiment. 3 is a flowchart illustrating a voice communication method according to Embodiment 1. 2 is a second flowchart showing a voice communication method according to Embodiment 1.

Explanation of symbols

  100 Elevator Remote Monitoring System, 110 Elevator Control Device, 120 Elevator Car, 121 Intercom, 122 Call Button, 130 Notification Device, 131 Abnormal Reception Processing Unit, 132 VoIP Processing Unit, 133 Data Communication Processing Unit, 134 Modem, 140 Telephone Network, 150 monitoring center, 151 communication device, 152 centralized monitoring device, 153 IP telephone, 191 voice signal, 192 voice packet, 193 abnormality notification, 194 abnormality notification packet, 195 paging signal.

Claims (4)

A notification device that transmits a voice packet including voice data to a specific communication device via a communication network,
An audio input unit that inputs an audio signal from a microphone, converts the input audio signal into audio data, and generates an audio packet including the audio data;
A communication determination unit for determining whether a communication delay occurs in the communication network;
When the communication determination unit determines that no communication delay has occurred in the communication network, the voice packet generated by the voice input unit is transmitted to the specific communication device via the communication network, and the communication A notification device, comprising: a voice transmission unit that discards a voice packet generated by the voice input unit when the judgment unit determines that a communication delay has occurred in the communication network. A notification device that transmits a voice packet including voice data to a specific communication device via a communication network,
A communication determination unit for determining whether a communication delay occurs in the communication network;
When an audio signal is input from a microphone and the communication determining unit determines that no communication delay has occurred in the communication network, the input audio signal is converted into audio data and an audio packet including the audio data is generated. And, if it is determined by the communication determination unit that a communication delay has occurred in the communication network, an audio input unit that discards the input audio signal;
An informing device comprising: an audio transmitting unit that transmits an audio packet generated by the audio input unit to the specific communication device via the communication network. The notification device further includes:
A voice receiving unit for receiving a voice packet transmitted via the communication network by the specific communication device;
The communication determination unit
3. The communication network according to claim 1, wherein a communication delay is determined to occur in the communication network when a voice packet is not received by the voice reception unit for a predetermined time or more. Notification device. The notification device according to any one of claims 1 to 3,
Having the specific communication device,
The specific communication device is:
A specific receiving unit that receives the voice packet transmitted by the reporting device via the communication network;
A specific output unit that outputs sound from a speaker based on the audio packet received by the specific receiving unit;
In the reporting device,
The said voice input part inputs the voice of the passenger in the said elevator car as said voice signal from the microphone installed in an elevator car, The elevator remote monitoring system characterized by the above-mentioned.

Images