JPS62131639A - Method of communication supervisory and controlling - Google Patents

Abstract

PURPOSE:To strengthen the supervisory function by shortening the polling cycle time even when the scale of a communication supervisory and controlling equipment is large in the communication supervisory control of a polling system where a supervisory station calls plural stations to be supervised sequentially. CONSTITUTION:The frequency of generation within a prescribed time having a change in the operating state of each supervised station is stored in a memory circuit in a communication supervisory and controlling section 100 installed in a supervisory station. When the generation of frequency stored in the memory circuit is zero and the operating state of a station to be supervised is normal for a long period, the call of the supervised station is controlled not to be executed. Further, the call signal reception frequency received by its own station within a specified time is stored in the memory circuit of a own station within a specified time is stored in the memory circuit of a communication supervisory and controlling section 200 installed in the station to be supervised. When the reception frequency stored in the memory circuit is zero and a change is caused in the operating state of its own station and a call signal to its own station is not detected for a prescribed time or over, the sending of the operating state of its own station to the supervisory station is controlled. through the control above, the polling cycle time is shortened in a large sized communication supervisory and controlling equipment as well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication monitoring and control method for data transmission. In particular, the present invention relates to a communication monitoring and control method that enables selective calling and individual calling.

〔overview〕

The present invention provides a polling-based communication monitoring control method in which a monitoring station and a plurality of monitored stations are interconnected, and the monitoring station sequentially calls the plurality of monitored stations. When polling is performed by excluding a monitored station that has been removed from the calling order, and when a local station ringing signal cannot be detected from the excluded monitored station for a specified period of time, or when a change occurs in the operating status of the local station. This system strengthens the monitoring function by shortening the polling cycle time even when the scale of the communication monitoring and control equipment is large, by sending the operating status of the own station to the monitoring station when the communication monitoring and control equipment is large, and also eliminates the adverse effects caused by this. It is.

[Conventional technology]

Conventionally, in communication monitoring and control equipment, the communication monitoring and control units of a monitoring station and a monitored station are connected to each other through a dedicated line in the form of a party line. A call signal is sent to the communication monitoring control unit installed at the station, and upon receiving a response signal from the monitored station,
A polling method was used to send a calling signal to the next monitored station.

[Problem that the invention seeks to solve]

However, such conventional communication monitoring and control equipment uses a polling method that sequentially calls monitored stations, so in the case of a large-scale communication monitoring and control equipment with a large number of monitored stations, when a certain monitored station The time (polling cycle time) from when a station is called until the next call is received becomes long, and an increase in the number of stations to be monitored deteriorates the monitoring function of the communication monitoring and control device.

The present invention solves the above-mentioned drawbacks, and provides communication monitoring control that has a short polling cycle time even in large-scale communication monitoring and control equipment with a large number of monitored stations, does not reduce the monitoring function, and eliminates the disadvantages caused by this. The purpose is to provide a method.

[Means for solving problems]

The present invention provides a communication monitoring control method in which a monitoring station and a plurality of monitored stations are connected via a line, and a bipedal monitoring station sequentially calls the monitored stations to monitor their operating states, in which the monitoring station operates normally for a predetermined period of time or longer. Monitored stations that the monitoring station recognizes as It is characterized in that when a change occurs in the operating state, the operating state of the own station is transmitted to the monitoring station.

[Effect]

A communication monitoring control section installed in a monitoring station stores in a memory circuit the frequency of occurrence of changes in the operating state of each monitored station within a certain predetermined period of time. If the frequency of occurrence stored in this memory circuit is zero and the operating state of the monitored station has been normal for a long time, control is performed so that the monitored station is not called.

In addition, the communication monitoring and control unit installed in the monitored station stores in a memory circuit the frequency of receiving paging signals received by the own station within a specified period of time. When a change occurs in the operating status, or when a calling signal to the own station cannot be detected for a certain period of time,
Controls the monitoring station to transmit the operating status of its own station. - By the control operation described in item (h), even in a large-scale communication monitoring and control device, the boring cycle time can be shortened, and the monitoring function does not deteriorate, and the adverse effects caused thereby can be eliminated.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 3 is a block diagram of the communication monitoring and control device of the present invention. In FIG. 3, 100 is a communication monitoring control unit for monitoring station, 200, to 200. 1 indicates a communication monitoring and control unit for a monitored station, and l indicates a communication line, and each communication monitoring and control unit is connected to each other by a party line. FIG. 1 is a block diagram of a communication monitoring control section of a monitoring station according to an embodiment of the present invention. In FIG. 1, the status of a monitored station (not shown) is transmitted to a monitoring station communication monitoring control unit 100 via a communication line p.
It is connected to the receiving circuit 101 of. The status of the monitored station 200 is connected from the receiving circuit 101 to a receiving processing circuit 102 that stores the status of each monitored station.

Here, the feature of the present invention is the call control portion surrounded by a dashed line. That is, the state change occurrence signal from the reception processing circuit 102 is sent to the state change occurrence frequency storage circuit 103,
It is connected to a transmission control circuit 104, a call control circuit 105, and a display circuit 106. State change occurrence frequency memory circuit 10
3, it is stored as the frequency of occurrence within a predetermined time for each monitored station. The state change occurrence frequency is connected from the state change occurrence frequency storage circuit 103 to the paging control circuit 105 . If the frequency of occurrence of a state change among the monitored stations 200 is zero and the operating status of the monitored station 200 is normal, a control signal is sent from the paging control circuit 105 so as not to call the monitored station. It is connected to transmission control circuit 104 and display circuit 106. The display circuit 106 displays the status of the monitoring station communication control section 100. Control from operation circuit 107? 11 signal is connected to the transmission control circuit 104 and the display circuit 106, the monitoring station communication monitoring control unit 100 is operated, and its status is displayed. A control signal from the transmission control circuit 104 is connected to a transmission circuit 108, and from the transmission circuit 108 via a communication line r, monitored stations excluding monitored stations whose status change frequency is zero and whose operation is in a normal operating state are transmitted. is called.

FIG. 2 is a block diagram of a communication monitoring control section of a monitored station according to an embodiment of the present invention. In FIG. 2, a calling signal is connected from a monitoring station (not shown) to a receiving circuit 201 of a communication monitoring control unit 200 for a monitored station via a communication line l. Receiving circuit 2
A call signal from 01 is connected to a reception processing circuit 204 via a branch circuit 203.

Here, the feature of the present invention is the transmission control portion surrounded by a dashed line. That is, the detection signal of the local station calling signal from the reception processing circuit 204 is connected to the transmission control circuit 205, the calling frequency storage circuit 206, and the display circuit 207. If the own station calling signal includes a control signal, the control signal is connected to the control signal output circuit 208. The paging frequency storage circuit 206 stores the number of times the own station paging signal is received within a predetermined period of time as a paging frequency. The calling frequency is connected from the calling frequency storage circuit 206 to the calling control circuit 209 .

Also, the status of each monitoring item can be checked from outside the diagram by the monitoring signal input circuit 21.
0, and is connected from the supervisory signal input circuit 210 to the transmission control circuit 205 and stored. Further, the status of each monitoring item is connected from the monitoring signal input circuit 210 to a display circuit 207 for display, and is further connected to a transmission control circuit 209. In the transmission control circuit 209, when the calling frequency is zero and a change occurs in the status of each monitoring item in the supervisory signal input circuit 210, the transmission control signal is transmitted so that the status of the monitoring item of the own station is sent to the monitoring station. Connected to circuit 205. Further, the transmission control signal is also connected to the transmission control circuit 205 when the calling frequency is zero for a predetermined period of time or longer. A control signal is connected from the transmission control circuit 205 to the transmission circuit 202 via the branch circuit 203 so as to transmit the status of the monitoring item of the own station, and from the transmission circuit 202 is transmitted to the monitoring station via the communication monitoring control line l. Ru. The transmission control circuit 205 is also connected to a display circuit 207, which displays the status of its own station.

The operation circuit 211 includes a transmission control circuit 205 and a display circuit 207.
It is connected to the control signal output circuit 208 and operates the own monitored station communication monitoring control unit 200.

The operation of the communication monitoring and control device having such a configuration will be explained. In FIGS. 1 and 2, a monitoring station communication monitoring control section 100 is connected to a communication monitoring control line l by a transmitting circuit 108 and a receiving circuit 101. In FIG. Transmission control circuit 1
04 stores the status of the monitored station. Reception processing circuit 102
The station receives signals from the station and calls the monitored stations in sequence. The state change occurrence frequency storage circuit 103 receives the signal from the reception processing circuit 102 and sequentially calls the monitored stations. The state change occurrence frequency storage circuit 103 stores the state change occurrence signal from the reception processing circuit 102 as the frequency of occurrence within a predetermined time for each monitored station. The paging control circuit 105 receives the state change occurrence frequency of each monitored station in the state change occurrence frequency storage circuit 103 and the state of each monitored station in the reception processing circuit 102, and determines whether the state change occurrence frequency among the monitored stations is zero. If the operating state of the monitored station is normal, a control signal is issued to the transmission control circuit 104 so as not to call the monitored station. The operation circuit 107 is provided to perform operations on the monitoring station communication monitoring control section 100, and the display circuit 106 displays the status of the monitoring station communication monitoring control section 100. By deleting monitored stations that are judged to be operating normally without any change in their operating status for a predetermined period of time from the calling order, it is possible to shorten the polling cycle time for sequentially calling monitored stations, and to check their operating status. It is possible to intensively monitor only unstable stations.

The transmission control circuit 205 stores the status of each monitoring item taken in by the monitoring signal input circuit 210.

Upon receiving the detection signal of the local station calling signal from the reception processing circuit 204, the status of each of the above monitoring items is transmitted to the monitoring station.

The reception processing circuit 204 detects the calling signal of its own station via the communication monitoring control line l, and sends a detection signal of the own station call O small signal to the transmission control circuit 205 and the calling frequency storage circuit 206, and also detects the own station calling signal. If the signal includes a control signal, the control signal output circuit 2
The above control signal is sent to 08.

The calling frequency storage circuit 206 stores the number of times the local station has received a detection signal for calling within a specified time as a calling frequency. The call control circuit 209 is manually input to the supervisory signal input circuit 210 when the call frequency in the call frequency storage circuit 206 is zero. When a change occurs in the status of a monitoring item, a generation control signal is sent to the transmission control circuit 205 so as to send the status of the monitoring item of the local station to the monitoring station. Further, the above-mentioned transmission control signal is also transmitted when the reception frequency is zero and a state in which no change occurs in the state of the monitored item continues for a specified period of time or more. The transmission control circuit 205 receives the transmission control signal and operates to transmit the status of the monitoring items of its own station to the monitoring station.

The operation circuit 211 is connected to the communication monitoring control section 20 for the self-monitored station.
A display circuit 207 is provided to perform operations on 0.
displays the status of the JM communication monitoring control section 200 for the own monitored station.

Even if the monitoring station does not send a calling signal to the monitored station, if a change in status occurs in the monitored station or if the calling signal of the own station cannot be detected for a specified period of time,
This monitored station can send its own status to the monitoring station.

〔Effect of the invention〕

As explained above, the present invention prevents an increase in polling cycle time in a large-scale communication monitoring and control device, and enables communication monitoring by focusing only on monitored stations with unstable operating conditions. This has the excellent effect of strengthening the monitoring function of the control device. Furthermore, if the monitored station is excluded from the calling order and the monitoring station does not send out a calling signal to this monitored station, or if there is a failure in the communication monitoring control line, the calling signal to this monitored station is Even if it is not detected at the station, if there is a change in the operating state of the own station or if the calling signal cannot be detected for a specified period of time, the operating state of the own station is sent to the monitoring station. It is possible to eliminate the harmful effects caused by excluding normally operating monitored stations from the calling order. That is, there is an advantage that the time delay for the monitoring station to detect the unresponsiveness of the monitored station due to a line failure or the like and to recognize a change in the status of the monitored station that has been excluded from the calling order can be minimized.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a communication monitoring control section for a monitoring station according to an embodiment of the present invention. FIG. 2 is a block diagram of a communication monitoring control section for a monitored station according to an embodiment of the present invention. FIG. 3 is a block diagram of the communication monitoring and control device of the present invention. 100...Communication monitoring control unit for monitoring station, 101.201
...Reception circuit, 102.204...Reception processing circuit,
103... State change occurrence frequency memory circuit, 104.20
5... Transmission control circuit, 105... Calling control circuit, 1
06.207...Display circuit, 107.211...Operation circuit, 10B, 202...Transmission circuit, 200...
・Communication monitoring control unit for monitored station, 203...branch circuit,
206... Calling frequency storage circuit, 208... Control signal output circuit, 209... Calling control circuit, 210... Monitoring signal input circuit, β... Communication monitoring control line. Patent Applicant: NEC Corporation-3 Overall Diagram of Example Monitoring Station 9 1 Figure

Claims (1)

[Scope of Claims] 1) A communication monitoring control method in which a monitoring station and a plurality of monitored stations are connected via a line, and the monitoring station sequentially calls the monitored stations to monitor their operating states, which Monitored stations that the monitoring station recognizes as operating are sequentially excluded from calls, and the monitored stations are automatically removed if the monitoring station does not call them for a specified period of time or more. A communication monitoring and control method characterized in that when a change occurs in the operating state of the station, the operating state of the own station is transmitted to the monitoring station.