JP2001016214A - Information collection control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information collection control system with excellent extension, less maintenance cost of channels and ease of message of terminals. SOLUTION: In the information collection control system, a plurality of information collection terminals and controllers are connected as access nodes on an ATM network 6, each controller is provided with a means that transmits control data, to which a terminal number corresponding to the information collection terminal of a control object is set, to ATM exchanges 5-1-5-4 in the ATM network, and each information collection terminal is provided with a means that discriminates whether or not control data received from the ATM exchange in the ATM network are addressed to its own terminal according to the terminal number set in the control data and controls its own terminal or a device to be controlled connected to its own terminal according to the control data when the control data are addressed to its own terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls a plurality of information collecting terminals arranged at different points such as roads and rivers,
The present invention relates to an information collection control system including a control device that collects video information or measurement information of a plurality of points.

[0002]

2. Description of the Related Art Conventionally, there is a system as shown in FIG. 4 as an information collection control system for grasping the conditions of rivers, coasts, roads, ports, dams, etc., and for supporting disaster prevention and expansion.

That is, ITV cameras C1 to Cn are arranged at a plurality of points such as rivers, coasts, roads, and the like, and these ITV cameras C1 to Cn are controlled in a predetermined number unit (two units in the example of FIG. 4). The ITV controlled devices 41 to 43 are installed, and the ITV controlled devices 41 to 43 are connected to the IT installed in a monitoring center or the like by analog 4-wire dedicated lines 44 to 46.
Connected to the V-controller 47, displays the images captured by the ITV cameras C1-Cn on the monitors M1-Mn connected to the ITV controller 47, and displays the images of the respective observation target points or the information collection target points at a monitoring center or the like. It can be observed at

In such a system, control data for controlling camera work such as a field of view and a zoom of each of the ITV cameras C1 to Cn is conventionally stored in each of the ITV cameras C1 to Cn.
To the ITV controlled devices 41 to 43 in charge of
The TV controller 47 outputs the data cyclically.

[0005]

However, the conventional configuration of FIG. 4 requires a dedicated line for each camera or for each ITV controlled device, which increases the line maintenance cost and increases the number of cameras. In this case, a new dedicated line must be added,
There is a problem of poor expandability.

Further, since the control data is output cyclically, it is necessary to assign the serial numbers of the cameras to which the control data is to be transmitted.
There is a problem that terminal management is troublesome, such as complicated camera number management.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an information collection control system which is excellent in scalability, has a low line maintenance cost, and facilitates terminal management.

[0008]

In order to achieve the above-mentioned object, the present invention provides a plurality of information collecting terminals arranged at different points, and collects information at a plurality of points by controlling the plurality of information collecting terminals. An information collection control system comprising: a plurality of information collection terminals and a control device connected as an access node on an ATM network; and the control device sets a terminal number corresponding to the information collection terminal to be controlled. Means for sending the set control data to the ATM exchange in the ATM network, wherein each of the information collecting terminals determines whether the control data received from the ATM exchange in the ATM network is addressed to the terminal itself. Judgment is made based on the terminal number set in the control data. Characterized in that it comprises means for controlling the controlled device that is.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an information collection control system according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a system configuration diagram showing an embodiment of the present invention, in which rivers, coasts, roads, ports,
Cameras 1-1 and 1 installed at necessary places such as dams
2, 2-1 and 2-2, 3-1 and 3-2, and an ITV controlled device 4- for controlling the cameras 1-1 and 1-2.
1, ITV controlled device 4-2 for controlling cameras 2-1 and 2-2, ITV for controlling cameras 3-1 and 3-2
The controlled device 4-3 is provided.

Then, the ITV controlled devices 4-1, 4-2,
4-3 is connected as an access node of a ring-shaped ATM network 6 composed of ATM exchanges 5-1 to 5-4. The ITV controlled device 4-1 and the cameras 1-1 and 1-2 form a set of information collecting terminals.
ITV controlled device 4-2, cameras 2-1 and 2-2, I
The TV controlled device 4-3 and the cameras 3-1 and 3-2 constitute a set of information collecting terminals.

ATM switch among ATM switches 5-1 to 5-4
A network management device 7 and an ITV controller 8 are connected to the exchange 5-1 as access nodes, and a monitor 9 for each camera or for each ITV controlled device is connected to the ITV controller 8.
-1 to 9-n are connected to display images captured by the cameras 1-1 to 3-2.

In this case, the network management device 7 and the IT
The V controller 8 and the monitors 9-1 and 9-n are installed in, for example, a monitoring center or the like.

The ATM exchanges 5-1 to 5-4 are H
It has an SD 6.3M and an analog 4-wire interface, and the ITV controlled devices 4-1, 4-2, and 4-3 are connected to the analog 4-wire interface.

Further, the ITV controlled devices 4-1, 4-2, 4
-3 is assigned a unique device number or terminal number within the network. Also, cameras 1-1 and 1-2 and cameras 2-1 and 2-2 and cameras 3-1 and 3-2 connected to these ITV controlled devices 4-1 4-2 and 4-3, respectively. A unique camera number is assigned to each ITV controlled device.

The ITV controller 8 sends control data in which terminal numbers corresponding to the ITV controlled devices 4-1, 4-2, and 4-3 to be controlled are set to the ATM switch 5-1 of the ATM network 6. Means, and the ITV controlled devices 4-1 and 4-1.
In 4-2 and 4-3, it is set in the control data whether the control data received from the ATM exchanges 5-2, 5-3 and 5-4 of the ATM network 6 are destined for the own terminal. It is provided with means for controlling the camera connected to the own terminal in accordance with the control data, if it is determined by the terminal number of the terminal.

FIG. 2 is a diagram showing a transmission format of a cyclic transmission format adopted in the information collection control system. The transmission format includes a start bit (1 bit configuration), a data bit (8 bit configuration), It is composed of a parity bit (1 bit configuration) and a stop bit (2 bit configuration).

The cyclic data transmitted from the ITV controller 8 includes control signals W1 to W1 following the synchronization signal.
W9 follows and has a data structure in which this is repeated.

Here, the synchronization signal is, for example, “0111”.
The control signal W1 is a bit string that sets the bit corresponding to the number of the camera whose control is valid to “1”.

Similarly, the control signals W2 to W8 are composed of bit strings for controlling the camera work such as the up / down / left / right directions and the changing speed, zoom, autofocus, and backlight, and the photographing environment.

The control signal W9 is conventionally unused, but in the present invention, this control signal W9 is used, and the terminal numbers of the ITV controlled devices 4-1 to 4-3 are entered here. Set and send.

In the above configuration, first, a control path is set for the ATM network 6 in the network management device 7, the ITV controller 8 is set to the "parent", and the ITV controlled devices 4-1 to 4-3 are set to the "parent". Establish a logical transmission path as a “child”.

Next, the ITV controller 8 controls the ITV to be controlled.
The control data having a configuration as shown in FIG. 2 in which terminal numbers corresponding to the controlled devices 4-1, 4-2, and 4-3 are set is transmitted to an ATM.
Send it to exchange 5-1. This control data is divided into 48-byte units in the ATM switch 5-1.
A byte header is added to make an ATM cell. AT
In order to distribute the ATM cells to the respective ITV controlled devices 4-1 to 4-3, the M exchange 5-1 duplicates the ATM cells by a cell duplication function, and then performs the respective ITV controlled devices 4-1 to 4-3. Is sent to a logical transmission path on the ATM network 6 which is a "child".

The ATM cells transmitted to the transmission line are transmitted to ATM exchanges 5-2 to 5-2 in the ring-shaped ATM network 6.
-4 after the original control data configuration is restored
The signals are distributed to the controlled devices 4-1, 4-2, and 4-3. ITV
The controlled devices 4-1, 4-2, and 4-3 are connected to the ATM switch 5-
It is determined whether the control data received from 1, 5-2, and 5-3 are addressed to the own terminal, based on the terminal number set in the control data W9 in the control data.

If it is addressed to the own terminal, the camera connected to the own terminal is controlled according to the received control data of the ATM cell group. If the received control data is not addressed to the terminal itself, the received control data is invalidated.

In this case, only the camera having the camera number corresponding to the bit set to "1" in the W1 byte in the control data is controlled.

As described above, in this embodiment, the ITV
The controller 8 and the ITV controlled devices 4-1 to 4-3 are connected to the ATM.
Since the control data is connected through the network 6 and the control data is distributed through the ATM network 6, a dedicated line for connecting the ITV controlled devices 4-1 to 4-3 and the camera at a plurality of points becomes unnecessary, and the line is maintained. Costs can be reduced.

Also, when adding cameras, it is only necessary to connect the set of the ITV controller and the camera to the ATM network, so that expandability is increased.

Further, in the ITV controller 8, which is the "parent" controller, a function of setting the terminal number to an unused bit of the control signal W9 while basically maintaining the conventional cyclic transmission system is added. Therefore, there is an advantage that the function change accompanying the change of the transmission path is small, and the cost for the function change can be reduced.

Further, since the camera number can be set for each ITV controlled device, effects such as easy management of the camera number can be obtained.

In the above embodiment, an example in which video information of a target point is collected by a camera has been described. However, the present invention is not limited to video information. It is needless to say that the same can be applied to the above.

As shown in another embodiment of FIG.
The LAN 12 to which the personal computer (PC) 10 and the server 11 are connected is connected to the ATM switch 5-1.
Connected via the router 13, the personal computer 1
0, the ATM switch 5-2 in the ATM network 6
Can be configured to control the camera 14 of another control specification connected to the camera 14.

That is, by using the ATM network, it is possible to construct a system in which control systems of controlled terminals having different control specifications are mixed.

[0034]

As described above, according to the present invention, a plurality of information collecting terminals arranged at different points and a control device for controlling the plurality of information collecting terminals to collect information of the plurality of points are provided. In the information collection control system, the plurality of information collection terminals and the control device are connected as an access node on an ATM network, and the control device sets control data having a terminal number corresponding to the information collection terminal to be controlled. To the ATM exchange in the ATM network.
Whether the control data received from the ATM exchange in the TM network is addressed to the own terminal is determined based on the terminal number set in the control data. Since the apparatus is provided with means for controlling the terminal or a controlled device connected to the terminal itself, advantages such as excellent scalability, low line maintenance cost, and easy terminal management can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of an information collection control system to which the present invention is applied.

FIG. 2 is a diagram showing a configuration of control data.

FIG. 3 is a configuration diagram showing another embodiment.

FIG. 4 is a configuration diagram showing an example of a conventional device.

[Explanation of symbols]

 1-1 to 3-2 Camera 4-1 to 4-3 ITV controlled device 5-1 to 5-4 ATM switch 6 ATM network 7 Network management device 8 ITV controller 9-1 to 9-n monitor 10 Personal computer (PC) 12 LAN 13 Router 14 Camera

Claims (1)

[Claims] 1. An information collection control system comprising: a plurality of information collection terminals arranged at different points; and a control device for controlling the plurality of information collection terminals to collect information on the plurality of points. The information collection terminal and the control device are connected as an access node on an ATM network, and the control device sends control data in which a terminal number corresponding to the information collection terminal to be controlled is set to an ATM exchange in the ATM network. Means, wherein each of the information collecting terminals is an ATM in an ATM network.
Whether the control data received from the exchange is addressed to the own terminal or not is determined by the terminal number set in the control data. An information collection control system, comprising: means for controlling a connected controlled device.