JPH03125544A - Alarm information transfer system - Google Patents

Abstract

PURPOSE:To eliminate the need for the connection of a slave station and a master station with a private line at all times by transferring an alarm caused in an exchange in the slave station to the master station through a public communication network only at the change of an alarm signal. CONSTITUTION:When an alarm is issued from the exchange 2, an alarm signal is sent to an alarm detection section 11 through plural alarm signal lines 17 provided on each alarm type. Since the alarm detection section 11 has a function to detect the change in an alarm signal, the alarm detection section 11 detects the change in the alarm signal upon the receipt of the alarm signal and sends the state information of an alarm signal line and information representing the change in the state to an alarm information transmission section 12 as alarm detection information. When the alarm cause in the exchange 2 of a slave station 1 is eliminated and the alarm signal is restored, the alarm detection section 11 detects the change in the alarm signal and sends the alarm detection information to the alarm information transmission section 12. Thus, the setting of a private line is not always required and the installation is saved.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a remote centralized monitoring system that transfers alarm information generated in exchanges installed in a plurality of slave stations to a master station, and centrally monitors the exchanges at the master station. The purpose is to transfer alarm information to the master station via the public communication network when an alarm occurs and when the alarm is restored.The slave station equipment installed in the slave station where the exchange is installed receives the alarm signal from the exchange and transmits it to the master station. an alarm detection unit that detects a change in an alarm signal and outputs alarm detection information when a change is detected; and an alarm information transmission unit that receives the alarm change detection information and transmits the alarm information to a master station via a public communication network. a slave station identification information storage means for storing slave station identification information to be sent to the master station, and an editor for inputting, editing and outputting the alarm detection information and the slave station identification information; means, a transmitting means for transmitting the slave station identification information and alarm information via a public communication network, controlling the editing means and the transmitting means, and controlling connection to the public communication network to transmit the slave station to the master station. A plurality of slave station corresponding units that receive information from the slave station apparatus via a public communication network are provided in the master station apparatus, which includes a control means for transmitting identification information and alarm information, and receives the alarm information from the slave station apparatus. a station identification information storage means for storing a plurality of station identification information; an alarm information display means for displaying alarm information received from the slave station device; the input slave station identification information is compared with the station identification information stored in the station identification information recording means 11 to identify the slave station that is the source of the alarm information, and then receives the alarm information. It is configured to include a master station control means for editing and outputting it to the alarm information display means.

[Industrial application field]

The present invention relates to a remote centralized monitoring system that transfers alarm information generated in exchanges installed in a plurality of slave stations to a master station, and centrally monitors the exchanges at the master station.

When maintenance of an unmanned exchange (referred to as a slave station) is performed at a remote maintenance center (referred to as a master station), conventionally, the slave station equipment that transmits alarm information of the slave exchange and the master station transmit the alarm information. Alarm information was transferred by connecting the master station device that received the information with a dedicated line.

On the other hand, the reliability of exchanges has improved significantly in recent years, and the occurrence of alarms in exchanges has become extremely rare. In such a situation, the chances of using a dedicated line between a slave station and a master station for transmitting alarm information have decreased significantly, and the dedicated line installed for handling slave stations and the slave station on the master station side are The cost of supporting equipment is high compared to the operating rate.

Therefore, there is a need for an alarm information transfer system that transfers alarm information via a public communication network when an alarm occurs in a slave exchange.

[Conventional technology]

FIG. 4 is a block diagram of a conventional system.

A slave station device 72 installed in a plurality of slave stations 7o monitored by the master station 80 receives an alarm signal from the exchange 71 via an alarm signal line 76, and sends alarm information to the master station 80 via a dedicated line 77. Transferring.

Although the details of the alarm signal line 76 from the exchange 71 are omitted, it consists of a plurality of lines, and each line is used for each type of alarm. The alarm signal line 76 is connected to the alarm signal receiving section 73 of the slave station device 72, and the alarm signal is received by the alarm signal receiving section 73 and sent to the editing section 74.

The editing section 74 edits the plurality of alarm types into a serial signal form and sends it to the transmitting section 75. The transmitter 75 sends the received signal to the dedicated line 77 as alarm information.

In the master station device 81 installed in the master station 80 , a slave station corresponding section 82 provided for each dedicated line receives the alarm information and transfers it to the master station control section 83 . The master station control unit 83 edits the alarm information and outputs it to a maintenance terminal 84 having an output device such as a display device. The maintenance person sees this and knows that an alarm has occurred in the slave station's exchange 71 or that the system has been restored.

However, in the conventional system, alarm signals from the switchboards of slave stations are always sent to the master station through a dedicated line, so each slave station requires a dedicated line and a slave station corresponding part of the master station equipment, resulting in high equipment costs. It has become a thing.

[Problem to be solved by the invention]

As mentioned above, in the conventional system, the alarm signal from the switchboard of the slave station is always sent to the master station through the dedicated line, so it is necessary to install a dedicated line and a slave station support section to handle the slave station.
Although the frequency of alarm occurrence is low, the equipment cost is high.

An object of the present invention is to transfer alarm information from an exchange to a master station via a public communication network when an alarm occurs and when the alarm is restored.

[Means to solve the problem]

FIG. 1 is a diagram explaining the principle of the present invention.

In the figure, l is a slave station, 2 is a switch installed in slave station 1,
3 is a master station, 4 is a public communication network, IO is a slave station device installed in the slave station 1 and transmits the alarm information of the exchange 2 to the master station 3, 20 is a slave station device installed in the master station 3 and transmits the alarm information of the exchange 2 to the master station 3. This is a master station device that receives the alarm information from the device 10.

11 is provided in the slave station device 10, and the switch 2
12 is an alarm detection unit that receives an alarm signal via an alarm signal line 17, detects a change in the alarm signal, and outputs alarm detection information when a change is detected; to the master station device 20 via the public communication network 4.
This is an alarm information transmitter that transmits alarm information to. 13-1
6 is each part constituting the alarm information transmitter 12; 13
14 is a slave station identification information storage means for storing slave station identification information to be sent to the master station device 20; Editing means for inputting, editing and outputting, 1
5 is a transmission means for transmitting the slave station identification information and alarm information via the public communication network 4; 16 is for controlling the editing means 4 and the transmission means 15 and controlling the connection to the public communication network 4;
It is a control means that transmits the slave station identification information and alarm information to the master station device 20.

Reference numerals 21 to 24 indicate respective units constituting the master station device 20, 2I indicates a plurality of slave station corresponding units that receive information from the slave station bag r110 via the public communication network 4, and 22 stores a plurality of station identification information flli. Station identification information storage means 23, alarm information display means for displaying alarm information received from the slave station device 10; 24, controlling the plurality of slave station correspondence units 21 to manually input information sent from the slave station device IO; , after comparing the input slave station identification information with the station identification information stored in the station identification information storage means 22 to identify the slave station l that is the source of the alarm information, receives and edits the alarm information, and issues the alarm. This is a master station control means that outputs to the information display means 23.

[For production]

In FIG. 1, when an alarm occurs in the exchange 2, the alarm signal is sent to the alarm detection section 11 via the corresponding signal line of a plurality of alarm signal lines 17 provided for each alarm type. Since the alarm detection unit 11 has a function of detecting a change in the alarm signal (details are not shown), upon reception of the alarm signal, it detects the change in the alarm signal, and detects the state information and state of the alarm signal line. Information indicating that has changed is sent to the alarm information transmitter 12 as alarm detection information.

In the alarm information transmitter 12, the control means 16 identifies the alarm detection information and controls the transmitter 15 to send it to the public communication network 4.
A connection operation to the master station device 20 is performed via the terminal. When the connection is completed, the control means 16 sends the identification information of the slave station I stored in the slave station identification information storage means 13 to the master station device 20 via the editing means 14.

In the master station device 20, one of the plurality of slave station corresponding parts 21 is acquired via the public communication network 4, and then the slave station identification information sent from the slave station device 10 is received. The master station control means 24 receives the core slave station identification information via the slave station correspondence section 21, collates it with the station identification information stored in advance in the station identification information storage means 22, and compares it with the station identification information stored in advance in the station identification information storage means 22. , and sends an II'1 approval signal to the slave station device 10 by a method not shown.

In the slave station device 10, when the control means 16 receives the @ acknowledgment signal from the master station device 20 via the transmission means 15,
The editing means 14 is controlled to edit the alarm detection information received from the alarm detection section 11, and the information is sent to the transmitting means 1 as alarm information.
5 to the master station device 20.

When the master station control means 24 of the master station device 20 receives the alarm information, it edits it and outputs it to the alarm information display device 23, thereby notifying a maintenance person or the like that an alarm has occurred in the exchange 2 of the slave station I.

When the control means 16 of the slave station device 10 finishes sending out the alarm information, it restores each means of the alarm information transmitter 12 and disconnects the communication line to the public communication network 4.

When the cause of the alarm in the exchange 2 of the slave station 1 is removed and the alarm signal is restored, the alarm detection section 11 detects a change in the alarm signal and sends alarm detection information to the alarm information transmission section 12 as described above. . Thereafter, the alarm information is sent to the master station device 20 via the public communication network 4 in the same manner as described above, and when the sending is finished, the public communication network is disconnected and the alarm information transmitter 12 is returned to its original state.

As described above, in the present invention, in order to transmit alarm information via the public communication network 4 only when an alarm occurs in the exchange 2 of the slave station 1 or when the alarm state is restored, a dedicated line is always set up. Furthermore, there is no need to install as many slave station corresponding units 21 of the master station device 20 as there are slave stations, and it is only necessary to install the number corresponding to the probability that alarm information will be sent at the same time, so equipment can be saved. .

〔Example〕

FIG. 2 is a configuration diagram of an embodiment of a slave station device of the present invention, and FIG. 3 is a configuration diagram of an embodiment of a master station device of the present invention.

(1) of FIG. 2 is an example configuration diagram of the alarm detection section of the slave station device, 31 is the alarm detection section, 32 is the alarm signal reception section, 33 is the alarm signal change detection section, and 34 is the power supply control. Department. Reference numerals 33a to 33c denote respective parts constituting the alarm signal change detection section 33, where 33a is a change detection circuit, 33b is a change holding circuit, and 33c is a reset control circuit.

1 2 Further, 34a to 34c are respective parts constituting the power supply control section 34, where 34a is an OR circuit, 34b is a power supply control circuit, and 34c is a power supply section.

In addition, (2) of FIG. 2 is an embodiment configuration diagram of the alarm information transmitting section of the slave station device, 41 is the alarm information transmitting section, 42
．． 44 is a multiplexer (MPX), 43 is a data editing section, 45 is a parallel/serial (P/S) conversion circuit, 4
6 is a modulator, 47 is a network control device, 48 is a demodulator, 49 is a serial/parallel (S/P) conversion circuit, 50 is a control section, 51 is a power supply section, and 52 is a power-on reset circuit.

Below, (1) and (2) in FIG. 2 will be explained together. It should be noted that the same symbols are used for the parts shown in (1) and (2) of FIG. 2 overlappingly.

In the embodiment shown in FIG. 2, the power supply unit 34c in the power supply control unit 34 of the alarm detection unit 31 receives power from the exchange,
Although DC voltage for operation is constantly supplied to the alarm detection section 31 to keep the alarm detection section 31 in the operating state, the power supply section 51 of the alarm information transmission section 41 receives power from the station power supply. , normally no operating DC voltage is sent to the alarm information transmitter 41.

The alarm detecting section 31 which is always in the operating state as described above has the alarm signal receiving section 32 connected to the plurality of contacts a7! of the alarm signal transmitting section 35 of the exchange. An alarm signal is being received from o-aff.

Note that the plurality of contact points aβ. One or more of ~aβ2 are activated depending on the type of alarm.

Now, when the contact ago operates, the relay 80 of the alarm signal receiving section 32 is operated by the contact, and the earth signal is sent to the alarm signal change detecting section 33 through the contact ao. Contact a of the alarm signal receiving section 32. The output of -ap is sent to the alarm information transmitter 41 as an alarm state signal ST, ~STp indicating the alarm state, but in the above state, earth air is sent only to ST.

Furthermore, the ground air at the contact point a0 is simultaneously input to the change detection circuit 33a. The change detection circuit 33a is a circuit that sends a differential pulse at the rise and fall of the input, although the details are omitted from the illustration, and detects the rise by the input of the ground air and outputs the differential pulse to the change holding circuit 33b. Send. The change holding circuit 3 4 33b inputs and holds the differential pulse, and sends an alarm detection signal CH to the alarm information transmitter 41 without indicating that a change has occurred in the alarm signal.

On the other hand, the alarm detection signal C output from the change holding circuit 33b
I. is manually input to the OR circuit 34a of the power supply control section 34.

The OR circuit 34a sends an output to the power supply control circuit 34b when any of the alarm detection signals CHo to CH is input, and the power supply control circuit 34b thereby transmits the alarm information transmitter 4.
A power-on instruction signal is sent to the power supply unit 51 of No. 1. As a result, the power supply unit 51 supplies an operational DC voltage to the alarm information transmitting unit 41, and sends back a power-on display signal to the power supply control circuit 34b. The power supply control circuit 34b
transmits a power-on instruction signal to the alarm information transmitter 41 when there is an input from the OR circuit 34a when the power-on display signal is not input manually, but the power-on display signal is input. In other words, when the power supply section 51 of the alarm information transmitting section 41 is already in the operating state, the power-on instruction signal is not sent.

When the power supply section 51 of the alarm information transmission section 41 operates, the power-on reset circuit 52 operates, and the control section 50 of the alarm information transmission section 41 is initialized. When the control unit 50 is initialized, it first controls the network control device 47 and inputs the telephone number (
(not shown) is sent. When the connection is completed, the control unit 50
sends the slave station number and slave station ID (slave station identification information) to the multiplexer 44. P/S conversion circuit 45. Modulator 46. It is sent to the master station through the network control device 47.

In this state, the master station identification information is returned from the master station device (not shown), but this conflict occurs between the network control device 47 and the demodulator 48.
The signal is sent to the control unit 50 through the 3/P conversion circuit 49, and compared with a preset master station TD to confirm that the connection has been completed without fail.

Upon completion of the above two connections, the control unit 50 outputs the alarm status signals STo to ST2 input to the multiplexer 42.
and the alarm detection signals CHo-CHp are divided into fixed information units, for example, 4-bit units, and the data is edited in the data editing section 43 and sent to the multiplexers 44 and P as alarm information.
/S conversion circuit 45. Modulator 465 6 Sends to the master station via network control device 47.

When all the above alarm information is sent out, multiplexer 4
Similarly to the above, the data end signal inputted in 4 is sent to the master station, and a reception completion signal is received from the master station. Upon receiving the reception completion signal, the control section 50 sends an information transmission completion signal to the reset control circuit 33c of the alarm detection section 31. When the reset control circuit 33c receives the information sending completion signal while the alarm detection signal CHO is being input, it sends a reset signal to the change holding circuit 33b to reset the change holding circuit 33b.

Further, the control section 50 of the alarm information transmitting section 41 controls the network control device to disconnect from the public communication network, and also sends a power cut signal to the power supply section 51 to turn off the power. With the above, the series of operations in the slave station device ends.

Next, the configuration diagram of an embodiment of the master station device of the present invention shown in FIG. 3 will be explained.

In FIG. 3, 61 is a master station device, 62 is a slave station corresponding section, and 62a
~ 62b are each part that constitutes the slave station corresponding section 62, and 62+]
62b is a modem, and 62c is an S/P conversion circuit. Further, 63 is a control unit, 64 is a station identification information correspondence table, and 65 is a maintenance terminal.

In FIG. 3, when the control unit 63 of the master station device 61 receives the slave station number and slave station ID from the slave station via the slave station corresponding unit 62 captured from the public communication network, it uses the core slave station number as the basis. After determining whether the received slave station ID is correct by indexing the station identification information correspondence table 64 set in advance, if it is correct, the master station ID (not shown) stored in the station identification information correspondence table 64 is indexed. Send to slave station.

Next, the Bill control unit 63 receives the alarm information sent from the slave station, and when a data end signal is finally sent, the Bill control unit 63 edits the received alarm information and displays it on the maintenance terminal 65, and indicates that the reception is complete. It sends a signal to the slave station, controls the network control device, and disconnects the line to the public communication network.

In the above description, it is assumed that the power supply section 51 of the alarm information transmitting section 41 of the slave station device outputs the DC voltage for operating the alarm information transmitting section 41 only when transmitting alarm information. It is clear that the effects of the present invention do not change even if the power supply section 51 is operated all the time. Also, although the master station sends the master station identification information to the slave stations, the transmission of the master station identification information is omitted by sending a signal indicating that the master station has received the slave station identification information from the slave station. It is also possible. The present invention does not exclude these.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to transfer an alarm generated in an exchange in a slave station to a master station using the public communication network only when the alarm signal changes, and to always communicate with a slave station via a dedicated line. Since there is no need to keep the master station connected, it becomes possible to significantly reduce the cost required for the dedicated line and equipment for the slave station support section within the master station, which greatly contributes to the economicalization of such alarm information transfer systems.

[Brief explanation of the drawing]

Figure 1 is a diagram explaining the principle of the present invention, Figure 2 is the present invention ■9 It is. ) ■ Slave station switch master station public communication network slave station device Alarm detection part Alarm information transmitter Slave station identification information storage means Editing method Transmission means control means Master station device Slave station support department Station identification information storage means Alarm information display means Master station control means 0 Unexamined Publication Hei 3 125544 (7) Configuration diagram of conventional method No. figure

Claims (1)

[Claims] A slave station device (10) provided in a slave station (1) in which a switch (2) is installed transmits alarm information generated in the switch (2) to a master station (3). In a remote centralized monitoring system that transmits an alarm signal to a master station device (20) and centrally monitors a slave exchange in the master station (3), an alarm signal is sent from the exchange (2) to the slave station device (10). an alarm detection unit (11) that receives the alarm signal, detects a change in the alarm signal, and outputs alarm detection information when a change is detected; (4) is provided with an alarm information transmitter (12) that transmits alarm information to the master station device (20), and in the alarm information transmitter (12), the alarm information is sent to the master station device (20). a slave station identification information storage means (13) for storing slave station identification information for inputting the alarm detection information from the alarm detection section (11) and slave station identification information from the slave station identification information storage means (13); , an editing means (14) for editing and outputting, a transmitting means (15) for transmitting the slave station identification information and alarm information via the public communication network (4), the editing means (14) and the transmitting means ( 15) and the connection to the public communication network (4), and the master station device (20
control means ( ) for transmitting the slave station identification information and alarm information to
16), in the master station device (20), a plurality of slave station corresponding units (21) that receive information from the slave station device (10) via the public communication network (4), and a plurality of station identification units. Station identification information storage means (22) for storing information
), an alarm information display means (23) for displaying alarm information received from the slave station device (10), and an alarm information display means (23) for displaying alarm information received from the slave station device (10);
0) input the information sent from the slave station, and compare the input slave station identification information with the station identification information stored in the station identification information storage means (22) to identify the slave station (1) that is the source of the alarm information. After that, the main station control means (24) receives and edits the alarm information and outputs it to the alarm information display means (23), and when an alarm occurs or is restored in the exchange (2) of the slave station (1). The alarm information is sent to the master station (3) via the public communication network (4).
An alarm information transfer method characterized by transferring information to.