KR20010058122A - Apparatus and method for remote surveillance using AO/DI - Google Patents

Abstract

PURPOSE: An apparatus and a method for performing a remote monitoring function using an AO/DI(Always-On/Dynamic ISDN) are provided to usually check a line, determine whether the line has an error and remotely monitor a network at a low cost. CONSTITUTION: A remote monitoring device(10), installed at a remote place as a monitored target, provides video data to a network always or when a necessary event happens. A remote monitoring server(20), installed at a monitoring part, receives the video data from the remote monitoring device(10) via the network. The AO/DI is connected to the Internet at low speed via a D-channel packet access of the ISDN. The AO/DI automatically performs a B-channel line access when the large amount of traffic is generated, and thereby makes data transmission between the remote monitoring device(10) and the remote monitoring server(20) at high speed.

Description

Apparatus and method for remote surveillance using AO / DI}

The present invention relates to a remote monitoring apparatus and method using AO / DI, and more particularly, by using AO / DI (Always On / Dynamic ISDN), the AO channel is used for line monitoring and constant monitoring, and the ISDN B channel is used. The present invention relates to a remote monitoring apparatus and method for performing complete video surveillance.

The conventional remote monitoring device is composed of a remote monitoring device 10 and a remote monitoring server 20 as shown in FIG. The remote monitoring equipment 10 is installed at a remote place to be monitored, and the remote monitoring server 20 is installed at the monitoring subject side. The image of the remote monitoring apparatus 10 side is transmitted to the remote monitoring server 20 side at any time or when a necessary event occurs through a connected network.

Currently, most remote monitoring devices perform remote monitoring using PSTN, ISDN or leased line.

2 is a flowchart of a remote monitoring control using a conventional PSTN or ISDN. When the remote monitoring device 10 detects a movement by performing a monitoring operation on its own, the circuit is connected to a remote sensing server 20 after the movement. It sends an image for the alarm on the remote monitoring server 20. When the alarm is released, the line connection between the remote monitoring device 10 and the remote monitoring server 20 is released.

When using PSTN or ISDN as described above, there is an advantage that the network fee is inexpensive, but it is impossible to always check and determine the state of the line and there is no method for diagnosing when disconnecting the line.

On the other hand, Figure 3 is a conventional remote monitoring control flow chart using a dedicated line, and displays an arbitrary image to the remote monitoring server 20, and solves the problem by generating an alarm when the Mars is interrupted or a problem occurs on the line.

The remote monitoring method using the leased line has a problem in that it is possible to monitor at all times and easily determine whether there is an abnormal state of the line, while the network fee is high.

Accordingly, the present invention has been made to solve the above-mentioned problems, and the remote monitoring using the AO / DI to perform the remote monitoring at a low network cost and can always check and determine whether there is an abnormal state at a low line cost It is an object of the present invention to provide an apparatus and method.

In order to achieve the above object, a remote monitoring device using AO / DI according to a preferred embodiment of the present invention, the remote monitoring device is installed at a remote site to be monitored, and provides a network at the time of occurrence of a regular or necessary event to the network;

A remote monitoring server installed at a monitoring subject and receiving an image from the remote monitoring device through the network; And

It is equipped with AO / DI that is connected to the internet at low speed through D channel packet connection of ISDN, and performs high speed data transmission between the remote monitoring equipment and the remote monitoring server by automatically making a B channel connection when high capacity traffic occurs. .

Remote monitoring method using the AO / DI according to an embodiment of the present invention, the step of transmitting a still image of the current monitoring target from the remote monitoring device connected to the Internet from the remote monitoring device connected to the Internet through the AO connection;

Transmitting video and audio information from the remote monitoring apparatus to the remote monitoring server by a motion detection or connection request of the remote monitoring server; And

And retransmitting the still image from the remote monitoring device to the remote monitoring server when the alarm situation is released from the remote monitoring server.

1 is a block diagram of a conventional remote monitoring device,

2 is a flowchart of a remote monitoring control using a conventional PSTN or ISDN,

3 is a remote monitoring control flow chart using a conventional dedicated line,

4 is an exemplary diagram of a network configuration of an AO / DI employed in the present invention;

5 is a block diagram of a remote monitoring apparatus according to an embodiment of the present invention;

6 is a control flowchart of the monitoring equipment side of the remote monitoring apparatus according to an embodiment of the present invention;

7 is a monitoring service side control flowchart of the remote monitoring apparatus according to the embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: remote monitoring equipment

20: remote monitoring server

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a diagram illustrating an AO / DI network configuration employed in the present invention, which is connected to the Internet at low speed through the D-channel packet connection of the ISDN, and automatically generates a B-channel line connection when high-capacity traffic occurs. Send and receive data.

The configuration of the remote monitoring apparatus to which the network configuration of AO / DI of FIG. 4 is applied is shown in FIG. 5. In FIG. 5, constant monitoring and line check are performed on the AO channel, and complete video transmission is performed using the high speed B channels.

6 is a flow chart of the monitoring equipment side of the remote monitoring apparatus according to an embodiment of the present invention.

In the case of the remote monitoring equipment 10, first, the AO connection is connected to the Internet network, and then the still image of the current monitoring target is transmitted to the remote monitoring server 20 on a low speed AO channel. In this state, if a motion is detected or a server-side connection request is made, the high-speed B channel is connected to the remote sensing server 20 and then video and audio information is transmitted. In this state, if there is an alarm situation release on the server side, the B channel is released and the still image transmission to the remote monitoring server 20 is resumed.

7 is a monitoring service side control flowchart of the remote monitoring apparatus according to the embodiment of the present invention.

In the case of the remote monitoring server 20 side, first, a connection to the Internet network is received and then the received still image of the remote monitoring device 10 is displayed. If a reception interruption occurs or a user's request is made, the high-speed B channel is connected to the remote monitoring device 10. If the connection is successful, video and audio are sent until the user clears the alarm. If the connection fails, the corresponding alarm is triggered.

According to the present invention as described above, by performing the remote monitoring using the AO / DI, it is possible to build a monitoring system that takes advantage of the constant monitoring of the leased line at a low line cost of the public network.

On the other hand, the present invention is not limited to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

Claims (6)

A remote monitoring device installed at a remote place to be monitored and providing an image to the network at any time or when a necessary event occurs; A remote monitoring server installed at a monitoring subject and receiving an image from the remote monitoring device through the network; And It is connected to the internet at low speed through DDN packet connection of ISDN and has AO / DI to make high speed data transmission between the remote monitoring equipment and remote monitoring server by automatically making B channel connection when high capacity traffic occurs. Remote monitoring device using AO / DI, characterized in that. Transmitting a still image of a current monitoring target from a remote monitoring device connected to the Internet through an AO connection to the remote monitoring server connected to the Internet; Transmitting video and audio information from the remote monitoring apparatus to the remote monitoring server by motion detection or by requesting connection of the remote monitoring server; And And retransmitting the still image from the remote monitoring device to the remote monitoring server when the alarm condition is released from the remote monitoring server. The method of claim 2, Remote monitoring method using the AO / DI, characterized in that the still image transmitted from the remote monitoring device side to the remote monitoring server side is transmitted in a low-speed AO channel. The method of claim 2, Remote monitoring method using the AO / DI characterized in that the high-speed B-channel connection to the remote monitoring server in advance when transmitting the video and audio information from the remote monitoring equipment to the remote monitoring server. The method of claim 2, AO / characterized in that a high-speed B channel is connected to the remote monitoring device when a remote connection server connected to the Internet is receiving a still image of the remote monitoring device or there is a reception interruption or a user's request. Remote monitoring method using DI. The method of claim 5, If the high speed B channel connection is successful, the remote monitoring server receives the video and audio until the user releases the alarm, and generates a corresponding alarm if the connection fails. Surveillance Method.