JP2003069992A - Disaster management communication system for prefectural governments - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disaster management communication system for prefectural governments where terminal station facilities and a control station facility are interconnected via a satellite channel or a ground system wireless channel that solves a problem of a low cannel utilizing efficiency because a means of a control station collecting image data from a plurality of terminal station surveillance camera controllers by using a surveillance camera controller of the control station requires a plurality of cannels and that can enhance the channel utilizing efficiency through the channel configuration without the need for special provision of a control channel of the terminal station surveillance camera controllers and channels for transmitting image data to the control station. SOLUTION: The disaster management communication system for prefectural governments has a simultaneous command channel (outgoing) for broadcasting voice, fax, data or the like at the same time and a simultaneous command channel (incoming) to return a reply of the result of the simultaneous command. The control station surveillance camera controller broadcasts independent control signals to the surveillance camera controllers of a plurality of terminal stations by using the channels, and the control station collects terminal station surveillance camera image data as a result of control by the control signals.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefectural disaster management radio system comprising a control station and a terminal station having at least two monitoring camera facilities. In the prior art, when control information is transmitted from a control station monitoring camera operating device to a plurality of terminal station monitoring camera control devices, image data resulting from the control is transmitted to the control station. Collecting also required multiple downstream and upstream lines. For this line, a private line or a public line is used, and in the case of configuring the system, the number of uplinks and downlinks for the number of terminal stations is required. Means for transmitting a control signal from a surveillance camera operating device of a control station to a plurality of terminal station surveillance camera control devices and means for collecting image data as a result of the control at the control station. Required multiple lines, and the line use efficiency was poor. It is an object of the present invention to configure a line without specially preparing a line for transmitting a control line of a terminal station monitoring camera control device and image data to a control station, thereby improving line use efficiency. [0004] In order to achieve the above object, the following measures are taken. [0005] In the prefectural disaster prevention administrative radio system, voice,
It has a simultaneous command line (down) for broadcasting FAX or data, etc., and a simultaneous command line (up) for returning a response of the simultaneous command result. Using these lines, the control station monitoring camera operating device simultaneously transmits independent control signals to the monitoring camera control devices of a plurality of terminal stations, respectively, and monitors the terminal station as a result of the control by the control signals. The camera image data is collected by a control station. One embodiment of the present invention will be described below. FIG. 1 shows an example of the configuration of a prefectural disaster prevention administrative radio system including surveillance camera equipment when a satellite system is used as a transmission path. [0008] 1 is a control station facility, 2 is a terminal station facility, 3 is a communication satellite, 4 is a broadcast command station, 5 is a broadcast command transmitter, 6 is a broadcast command facsimile, 7 is a broadcast command control device, and 8 is a line. Control device, 9 is a satellite earth station device (control station), 10 is a satellite earth station device (terminal station), 11 is a line connection control device, 12 is a telephone, 13 is a fax machine, 14 is a surveillance camera operating device of the control station, Reference numeral 15 denotes a monitoring camera monitoring device. The case of a simultaneous command by voice will be described. Simultaneous voice operation is started by the simultaneous command board 4 of the control station equipment 1, and the content of the voice command is input by voice from the simultaneous command transmitter 5 connected to the apparatus. When the simultaneous command is activated and the circuit paths are connected to the satellite earth station device 10 and the line connection control device 11 of the plurality of terminal station equipments 2 via the communication command satellite 3 via the simultaneous command control device 8 and the satellite earth station device 9, a line is established. A line connection response is sent back from the connection control device 11 to the simultaneous command table 4 of the control station equipment 1. On the other hand, the line connection control device 11 sounds a ringing tone to the connected telephone 12. After a response can be confirmed from the line connection control device 11 of the terminal equipment 1 of the simultaneous command target station at the simultaneous command table 4, voice is input from the simultaneous command transmitter 5. In the case of the simultaneous command by FAX, the issuing device of the control station 1 sends the simultaneous command issuing FA from the simultaneous command transmitter 5.
X6, and the flow of operation is the same except that the telephone 12 of the terminal equipment 1 on the receiving side is replaced by the FAX 13. In the present invention, in addition to the above-described conventional configuration, the control station equipment 1 has a monitoring camera operating device 14 and a monitoring camera monitoring device 15, and the terminal station equipment 2 has a monitoring camera control device 1.
6. The surveillance camera 17 is newly added. The above-mentioned simultaneous command line is a line dedicated to the simultaneous command, and constantly transmits an idle signal on a down line to the terminal station at all times. In addition, the line connection control devices 11 of each of the plurality of terminal station equipments 1 periodically return a response to an idle signal on the uplink directed to the control station. This is to always enter the simultaneous command operation. [0013] By transmitting a surveillance camera operation signal on the down line and transmitting a surveillance camera image of the control result on the up line while transmitting and receiving signals on the up and down lines of the simultaneous command line, a new application operation is performed. Can be realized. A control signal is sent from the surveillance camera operating device 14 of the control station equipment 1 to the surveillance camera control device 16 of each terminal station equipment 2, and as a result, the surveillance camera 17 is controlled and its image is compressed and controlled. It is sent to the monitoring camera monitoring device of the station equipment 1. The image compressed and transmitted by the surveillance camera monitor device 15 is expanded to reproduce the image and display it on the monitor. According to the present invention, a plurality of controls can be simultaneously transmitted from a control station monitoring camera operation device to a plurality of terminal station monitoring camera control devices. There is no need to specially prepare multiple lines to collect the terminal station monitoring camera image data at the control station,
Line utilization efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an example of a prefectural disaster prevention administrative radio system configuration diagram [Description of symbols] 1: Control station facility 2: Terminal station facility 3: Communication satellite 4:
Simultaneous command stand, 5: Simultaneous command transmitter, 6: Simultaneous command issue F
AX, 7: simultaneous command controller, 8: line controller, 9:
Satellite earth station device (control station), 10: satellite earth station device (terminal station), 11: line connection control device, 12: telephone, 1
3: FAX, 14: surveillance camera operating device, 15: surveillance camera monitor device, 16: surveillance camera control device, 17: surveillance camera.

Claims (1)

Claims: 1. A control station, comprising a control station and a terminal station having at least two monitoring camera facilities, and connected to a network via a wireless line that is a satellite line or a terrestrial line as a communication path. In the prefectural disaster prevention administrative radio system, the control of the terminal station monitoring camera equipment is performed by transmitting a control signal from the operation device installed in the control station using the simultaneous command line (downlink) to the terminal station, and The prefectural disaster prevention administrative radio system characterized in that the surveillance camera images were compressed, and the control station was able to collect image data from multiple terminal stations by using a simultaneous command line (uplink).