JPH066485A - Remote monitor system - Google Patents

Abstract

PURPOSE:To devise the system such that it is prevented that information with high urgency is kept waited or the information with high urgency is interrupted by information with lower urgency through the configuration of the system to select a line using right depending on the urgency of detected fault information. CONSTITUTION:When a remote monitor 5a has a using right of a telephone line and a switch 4a is connected, a remote monitor 5b detects a fault of installation or the like and it is required to use the telephone line, then a connection circuit 1b adds information representing urgency of detected fault information to the using right request information of the line and informs it to the connection circuit 1a via inter-equipment transmission interface circuits 2a, 2b. When the telephone line is not available at present, the control circuit la checks the urgency information added to the received using right request information. When the urgency is higher, the control circuit 1a stops the transmission of a signal to a receiver 7 and disconnects the switch 4a to inform the transfer of the using right of the telephone line to a control circuit 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system provided with a plurality of remote monitoring devices for automatically sending abnormality detection information to a receiving device separated via a communication line when an intrusion or facility abnormality is detected. .

[0002]

2. Description of the Related Art FIG. 2 shows a remote monitoring system in which a plurality of remote monitoring devices are connected to the same telephone line. In FIG. 2, 6 is an exchange, 7 is a receiving device, 5 a to 5 n are remote monitoring devices, and the remote monitoring devices 5 a to 5 n are connected to the receiving device 7 separated by the exchange 6.

These remote monitoring devices 5a-5n
Are switches 4a to 4n for disconnecting the telephone line, line interface circuits 3a to 3n for interfacing with the telephone line, and inter-device transmission interface circuits 2a to 2n for determining the right to use the telephone line. The control circuit 1a is composed of control circuits 1a to 1n for controlling.
1n are switches 4a to 4n so that one remote monitoring device is tangentially connected to the telephone line according to the line usage right request information transmitted via the inter-device transmission interface circuits 2a to 2n.
control n.

Next, the operation according to the above configuration will be described with reference to FIG. 3 showing a procedure for switching the right to use the telephone line. Here, the remote monitoring device 5a has the right to use the telephone line and connects the switch 4a, and the other remote monitoring devices 5b to 5n.
It is assumed that the switches 4b to 4n are disconnected, and that the remote monitoring device 5b detects an equipment abnormality or the like and an event of using the telephone line occurs.

First, the control circuit 1b makes a usage right request to the control circuit 1a via the inter-device transmission interface circuits 2b and 2a. Upon receiving the request (step S1), the control circuit 1a checks whether or not the local remote monitoring device 5a is currently using the telephone line to detect equipment abnormality and send the information to the receiving device 7. (Step S2).

If the telephone line is not in use, the control circuit 1a judges that the right to use the line can be passed to the remote monitoring device 5b, and the information is transmitted between the device transmission interface circuits 2a and 2b.
To the control circuit 1b to disconnect the switch 4a from the telephone line. On the other hand, the control circuit 1b sends the abnormality information to the receiving device 7 via the line interface circuit 3b and the exchange 6 by connecting the switch 4b (step S4).

On the other hand, when the telephone line is in use, the control circuit 1a of the remote monitoring device 5a uses the telephone line as it is and terminates the transmission of the abnormal information to the receiving device 7, and then the usage right of the line is monitored by the remote monitoring device. 5b (step S5).

[0008]

Since the conventional remote monitoring system is configured as described above, one remote monitoring device connected to the same telephone line can monitor another while the telephone line is in use. Even if an error occurs in the device, there are problems such as waiting until the remote monitoring device in use finishes sending information, or that the information sending of the remote monitoring device in use must be aborted halfway. there were.

The present invention has been made to solve the above problems, and when abnormality information is detected, the right to use the telephone line can be switched according to the content of the abnormality detection information. The purpose is to obtain a remote monitoring system.

[0010]

According to a first aspect of the present invention, there is provided a remote monitoring system in which a plurality of remote monitoring devices for automatically sending abnormality detection information to a remote receiving device are connected to the same communication line. In a remote monitoring system in which each remote monitoring device is equipped with an inter-device transmission interface circuit for transmitting the line usage right request information for switching the usage right, information indicating the urgency of the abnormality detection information is included in the line usage right request information. Each remote monitoring device is equipped with a switching control means for switching the communication line usage right to the remote monitoring device which has transmitted the above-mentioned information and transmitted the above-mentioned line usage right request information based on the content of the information indicating the degree of urgency. Is.

According to a second aspect of the present invention, there is provided a remote monitoring system for connecting a plurality of remote monitoring devices for automatically sending abnormality detection information to a remote receiving device to the same communication line to switch the right to use the communication line. In a remote monitoring system in which each remote monitoring device is equipped with an inter-device transmission interface circuit that transmits line usage right request information, the line usage right request information is added with information indicating the urgency of the abnormality detection information and transmitted. Each remote monitoring device is provided with switching control means for switching the usage right of the communication line to the remote monitoring device which has sent the usage right request information of the line after a time corresponding to the content of the information indicating the degree of urgency.

[0012]

In the remote monitoring system according to the first aspect of the present invention, the right to use the communication line is determined by the content of the detected abnormality information, and when the abnormality detection information of high urgency occurs even during the use of the communication line. , The line usage right is switched to the remote monitoring device that sends the information.

Further, in the remote monitoring system according to the second aspect, the line use right is switched after a time corresponding to the content of the information indicating the degree of urgency.

[0014]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a procedure for switching the right to use a telephone line according to an embodiment of the present invention in the remote monitoring system having the configuration shown in FIG.

Now, when the remote monitoring device 5a shown in FIG. 2 has the right to use the telephone line and the switch 4a is tangentially connected, the remote monitoring device 5b detects an abnormality in the equipment and the like and uses the telephone line. Is generated. First, the control circuit 1b
Adds the information indicating the degree of urgency of the detected abnormality information to the line usage right request information, and the inter-device transmission interface circuit 2
The control circuit 1a is notified via b and 2a.

Then, the control circuit 1a detects whether or not the remote monitoring device 5a is currently in use, such as a facility abnormality, and checks whether the telephone line is in use (steps S1 and S2). Hand it over to the remote monitoring device 5b (step S
4) If it is in use, the urgency level information added to the received usage right request information is checked (step S3).

Here, when the urgency is higher, the control circuit 1a stops sending to the receiving device 7 by the remote monitoring device 5a itself, disconnects the switch 4a, and grants the right to use the telephone line. Inter-device transmission interface circuit 2
The control circuit 1b is notified via a and 2b. Control circuit 1
b connects the switch 4b and sends the detection abnormality information to the receiving device 7 (step S6).

When the urgency is low, the remote monitoring device 5
The control circuit 1a of "a" uses the telephone line as it is, and passes the right to use the line to the receiving device 7 after the abnormal information is transmitted (step S5).

Example 2. In the above embodiment, the usage right is transferred according to the urgency, but the usage right of the line may be transferred after a time corresponding to the content of the urgency.
In this way, the line usage right by the remote monitoring device before switching is secured for the delay time as the degree of urgency is lower.

[0020]

As described above, according to claim 1 of the present invention, since the line use right can be switched according to the degree of urgency of the detected abnormality information, information of high urgency is waited for. There is an effect that it will not be interrupted or interrupted by people with high urgency despite low urgency.

Further, according to claim 2, since the line usage right is switched after a time corresponding to the content of the urgency, the line usage right of the remote monitoring device before the switching can be secured for the above time. The effect is that there is no immediate interruption.

[Brief description of drawings]

FIG. 1 is a flowchart showing a procedure for switching a line use right according to the present invention.

FIG. 2 is a configuration diagram of a remote monitoring system.

FIG. 3 is a flowchart showing a conventional line usage right switching procedure.

[Explanation of symbols]

 1a to 1n Control circuit 2a to 2n Device-to-device transmission interface circuit 3a to 3n Line interface circuit 4a to 4n Switch 5a to 5n Remote monitoring device 6 Converter 7 Receiving device

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[Procedure amendment]

[Submission date] November 13, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[Claims] 1. A plurality of remote monitoring devices for automatically sending abnormality detection information to remote receiving devices are connected to the same communication line,
In a remote monitoring system in which each remote monitoring device is equipped with an inter-device transmission interface circuit for transmitting line usage right request information for switching the usage right of the communication line, the urgency of the abnormality detection information in the line usage right request information To the remote monitoring device that has transmitted the information indicating the urgency and transmitted the line usage right request information based on the content of the information indicating the degree of urgency to each remote monitoring device. A remote monitoring system characterized by being equipped. 2. A plurality of remote monitoring devices for automatically sending abnormality detection information to remote receiving devices are connected to the same communication line,
In a remote monitoring system in which each remote monitoring device is provided with an inter-device transmission interface circuit that transmits line usage right request information for switching the usage right of the communication line, an emergency of the abnormality detection information is added to the line usage right request information. Switching control means for switching the usage right of the communication line to the remote monitoring device that has transmitted the information indicating the degree of transmission and transmitted the usage right request information of the line after a time corresponding to the content of the information indicating the degree of urgency. A remote monitoring system comprising a remote monitoring device.