KR100850740B1 - Unified operation system using microwave communication for a train and the operation method thereof - Google Patents

Abstract

A system and a method for integrally managing trains using microwave communication are provided to prevent various accidents efficiently in the subway and manage failure of station equipments promptly by enabling a train driver and a central control center to monitor/manage a platform image and an operation state of various equipment of a station. A ground device(100) is installed in each station, integrates/converts a monitoring image received from cameras and contents image comprising TV or various AD broadcasts into a digital broadcast signal, transmits the digital broadcast signal in microwave, and periodically checks/transmits an operation status of important equipments comprising the ground device to an integrated manager(300). The integrated manager is installed to a central control center, outputs monitoring image information received from the ground device, and outputs a management signal when failure occurs in the main equipment. An onboard device(200) is installed in a train, demodulates the digital broadcast signal received from the ground device through the microwave, and displays the monitoring image and the contents image to a train driver or passengers by separating the digital broadcast signal.

Description

Unified operation system using microwave communication for a train and the operation method

The present invention relates to a train integrated operating system and a method of operating the same using microwave communication, and more particularly, wirelessly transmitted to trains by integrating the platform image provided from a camera installed in the history with various contents, the history and the general command room and It is configured to integrate and monitor the operation status of various equipments of the station as well as the image of the platform through the network that connects the communication branches, so that the train station and the general command room can monitor the platform status of the station In addition, the present invention relates to an integrated operation system and its operation method capable of taking immediate failure measures by grasping the failure situation of the historical equipment in a general command room and a communication branch in real time.

Recently, due to the rapid increase in the number of automobiles and the supply of road facilities, which are rapidly increasing due to industrial development and economic growth, the traffic shortage in big cities is intensifying. have.

Urban railway refers to transportation facilities and means of transportation that run along tracks, which are used for smooth communication of urban traffic. For example, lightweight railways promoted by subways, trains, or small and medium cities constructed and operated in urban traffic areas. And monorails.

However, in 2003, following the Daegu subway fire disaster, it was necessary to prepare various safety accidents such as suicide, unauthorized access and train contact, and preparation for the second major disaster caused by fire or flooding. Seriously emerged. Accordingly, the government-related ministries have enacted and reflected in Article 46 of the Urban Railroad Construction Regulations so that electric vehicle engineers can check the platform status and establish a wireless video transmission system that transmits emergency situations to electric vehicles in the event of a disaster.

Since then, Busan Metro Line 3, Gwangju Subway Line 1, Seoul Subway Line 8, and New Airport Railroad have been building wireless video transmission systems that can only transmit video in one direction using wireless LAN system and leaky coaxial cable. In September, the Ministry of Information and Communication sensed the necessity of standardization work for the subway wireless video transmission system and announced that all future subway wireless video transmission systems should use the dedicated frequency of 18GHz.

Conventional wireless image transmission system is a wireless monitoring system for the line monitoring of the subway platform described in Korea Patent No. 0395825. The wireless monitoring system described in the above document is a system in which a surveillance camera installed in a platform in a subway station and a monitor system in a running train are wirelessly interlocked so that a driver in a train can grasp the platform and track conditions before the train enters the station. .

However, such a conventional wireless video transmission system has a risk that the driver in the train can determine the situation of the platform in the station through a relatively small monitor screen, there is a risk that the driver's carelessness or accident may not find a dangerous situation, When an error occurs in a main device such as a camera or a wireless communication unit due to a mechanical fault or an external factor such as fire or flooding, it is difficult to immediately detect the abnormal state of the device in real time and recover the normal state. There is a problem that it takes a lot.

The present invention is to solve the problem of the wireless image transmission system according to the prior art. In other words, the object of the present invention is to integrate the platform image provided from the camera installed in the history with a variety of content and wireless transmission to the train, and through the network network connecting the history and the general command room and communication branch as well as the station image By providing a wireless communication system that integrates and monitors and manages the operation status of the equipment, it is possible to prevent historical accidents on the urban railway more efficiently by allowing the train driver and the general command room to monitor the status of the station platform in a dual way. Its purpose is to establish a stable monitoring system that can respond immediately to the occurrence of failure of the historical equipment.

The present invention as a technical concept for achieving the above object is integrated in each history, the surveillance video transmitted from a plurality of cameras installed around the platform or track, and the content video consisting of TV or various commercials A terrestrial device that modulates the digital video broadcasting signal and transmits the microwave to the microwave; An integrated operating device provided in a general command room, connected to the ground apparatus and a network, and configured to receive and output the surveillance image information from the ground apparatus; It is provided in a train that runs along a track, demodulates a digital video broadcasting signal received through microwave communication from the ground apparatus, and separates the surveillance video and the content video from the demodulated digital video broadcasting signal to drive or passenger of the train. And an on-vehicle device for outputting to the vehicle, wherein the ground apparatus periodically detects an operation state of the main equipments constituting the ground apparatus and transmits it to the integrated operating apparatus, and the integrated operating apparatus is provided from the ground apparatus. Receives and outputs the operation status information of the main equipment, and when the detection of the failure of the main equipment, the train integrated operation using the microwave communication, characterized in that for transmitting the command signal for the main equipment with the failure to the ground apparatus Provide a system.

In addition, the present invention, by collecting the operation status for the main equipment installed in the history on the ground device periodically, if there is a failure equipment transmits the failure occurrence information for the corresponding equipment to the integrated operating device, Receives the fault occurrence information transmitted from the ground apparatus, informs the commander of the fault contents through the screen output and alarm alarm, and sends the action command to the ground apparatus side with reference to the previously stored fault information for the fault. In addition, the present invention provides a method for operating a train integrated using microwave communication, characterized in that for transmitting information on the occurrence of the failure to the maintenance device of the communication branch located in the vicinity of the history.

The integrated train operating system and the operating method using the microwave communication according to the present invention, by integrating the platform image provided from the camera installed in the history with a variety of content by wireless transmission to the train, allowing the driver of the train platform to the arrival history In addition, it is possible to check the condition of the track and immediately respond to unforeseen accidents, while providing various information to passengers.

In addition, the present invention integrates and monitors and manages the operation status of various equipments of the station as well as the image of the platform through the network network connecting the history and the general command room and the communication branch, through automatic measures for the occurrence of the failure of the history equipment. It also has the effect of greatly improving the safety and reliability of the monitoring system.

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

1 is a block diagram of a train integrated operating system according to an embodiment of the present invention.

As shown in Figure 1, the train integrated operating system according to an embodiment of the present invention is provided with a ground device 100 provided for each history, the integrated operating device 300 installed in the general command room, and the communication branch The maintenance device 400 is connected to the network, the train is provided with a vehicle apparatus 200 for receiving data through microwave communication from the ground device 100 of the scheduled arrival history.

The ground apparatus 100 integrates a surveillance image transmitted from a plurality of cameras installed near a platform or track, and a content image classified by terrestrial broadcasting or advertisement, modulates it into a single digital video broadcasting signal, and then installs the onboard equipment of a train. Microwaves to 200. In addition, it detects the operation state of the main equipment constituting the ground device 100 and transmits to the integrated operating device 300 and the maintenance device 400 of the communication branch of the general command room.

The integrated operating device 300 is installed in the general command room and outputs the operation status of the main equipment constituting the ground device 100 from each ground device 100 connected to the network and outputs, and the main equipment to the ground device 100 As an operating device that transmits a command signal to control, when an error occurs in a specific main equipment of the ground apparatus 100, an alarm is immediately notified by a screen and sound, and the history name, device name, device location, and fault status of the faulty equipment, etc. It provides information on the occurrence of failures. In addition, the integrated operating device 300 receives and displays the monitoring image information from each ground apparatus 100, thereby efficiently monitoring the platform and track conditions of the entire history from the center.

The maintenance device 400 is installed in a certain number of history units one by one is provided in the communication branch in charge of maintenance of the history in the jurisdiction, and transmits the status information of the main equipment from the ground apparatus 100 through the network It is configured to receive and monitor, so that in case of a failure, the management staff of the corresponding communication branch can respond quickly.

The on-vehicle device 200 is provided in a train running along a track to demodulate a digital video broadcasting signal wirelessly received from the ground apparatus 100, and separates the demodulated digital video broadcasting signal into a surveillance video and a content video, respectively. By outputting to the driver and passengers of the car, the driver can check the platform or track status of the scheduled arrival history and respond immediately to unforeseen accidents, while providing various contents to the passengers.

2 is a block diagram showing a detailed configuration of the train integrated operating system shown in FIG.

The detailed configuration of a wireless communication system according to an embodiment of the present invention will be described with reference to FIG. 2.

The ground apparatus 100 is a screen splitter for outputting a plurality of cameras 110 installed around a platform or track of history and an independent analog image received from each camera 110 into a predetermined number of images. 120, a surveillance image encoder 141 that receives a video signal from the screen splitter 120, converts the image into a digital format, and compresses the compressed image. Providing unit 130, a content image encoder 142 for converting and compressing the content image transmitted from the content providing unit 130 to a digital format, and multi-synthesizing the signal input from each encoder to output as a single signal A digital video that modulates the signal output from the multiplexer 150 and the multiplexer 150 to a digital video broadcasting standard. It is configured to include a transmitter modulator 160 and a radio transmitter 170 that transmits the converted digital video broadcasting signal outputted from the digital video broadcast modulator 160 in the microwave-only frequency. In addition, the first control unit 180 for controlling each device constituting the ground device 100, and the input unit 190 for receiving a variety of alarm-related information from the user and transmits to the first control unit 180.

The digital video broadcasting modulator 160 converts the signal output from the multiplexer 150 into a digital video broadcasting standard DVB-T (terrestrial digital video broadcasting) or DVB-S (satellite digital video broadcasting) and outputs it as an IF signal. In this way, by applying the digital video broadcasting standards, it is possible to transmit a variety of data signals in addition to the video signal to the on-vehicle device 200 side.

The wireless transmitter 170 up-converts the IF signal transmitted from the digital video broadcasting modulator 160 to a dedicated frequency for wireless communication and transmits the wireless module (not shown) and an antenna responsible for microwave transmission. It consists of a part (not shown). Here, the wireless transmitter 170 is installed in a plurality of train operating directions, namely ascending and descending, so as to monitor the entire operating section of the train, each of which is assigned a number of two or three channels to the train operating direction By alternately allocating the assigned channels according to the signal interference with other adjacent radio transmitters can be minimized. In Korea, the dedicated frequency of the wireless transmitter 170 is preferably set to 18 GHz allocated to the subway wireless video transmission system by the information and communication unit.

The first controller 180 periodically collects / stores the operation state of the main equipment of the ground apparatus 100 installed in the corresponding history, outputs a failure occurrence signal for the equipment in which the problem occurs, and the screen splitter 120 ) To output the historical information such as the history name on the screen generated by the screen splitter 120. In addition, the IF frequency of the output signal can be changed by controlling the digital video broadcasting modulator 160, and if the alarm information including the alarm occurrence contents, the alarm occurrence position is input through the input unit 190, the input alarm information Is transmitted to the audio input terminal of the surveillance video encoder 141. As described above, the alarm information encoded together with the boarding point image information and delivered to the onboard apparatus 200 may be decoded by the onboard apparatus 200 to generate an alert required by the driver. In addition, the first control unit 180 transmits the operation state and related data of the main equipment constituting the ground apparatus 100 to the integrated operating device 300 of the general command room and the maintenance device 400 of the communication branch.

The integrated operating device 300 receives the operation status information on the main equipment of the ground apparatus 100 from the first control unit 180 of the ground apparatus 100 to monitor the malfunction and failure, and to take measures for the equipment in which the failure occurs. The integrated control unit 310 for transmitting a signal to the first control unit 180, the monitoring unit 320 receives the failure information from the integrated control unit 310 and outputs the screen or sound, and the history of the failure history for each history The two consists of a history history database (330).

Meanwhile, the on-vehicle device 200 receives a microwave of a digital video broadcasting standard from the radio transmitter 170 of the terrestrial device 100 and transmits the radio signal from the radio receiver 270 and the radio receiver 270 to down-convert to an IF signal. A digital video broadcasting demodulator 260 for demodulating an IF signal of a digital video broadcasting standard, and a demultiplexer for processing a signal demodulated by the digital video broadcasting demodulator 260 and separating the video signal into a surveillance video signal and a content video signal; 250, a surveillance image decoder 241 for decoding the surveillance video signal output from the demultiplexer 250 and inputting the same to the engine room monitoring apparatus 210, and a content video signal output from the demultiplexer 250. Content image decoder 242 to transmit to the passenger guide system side, and the second control unit 280 for controlling each device constituting the vehicle on-board 200.

The second control unit 280 controls each device constituting the onboard device 200, and analyzes the audio signal output from the audio output terminal of the surveillance image decoder 241 to extract the alarm information and to generate an alarm. The alarm information is sent to the engine room monitoring device.

The wireless receiver 270 is composed of a wireless module and an antenna unit in the same manner as the wireless transmitter 170, and is installed in the front of the vehicle's traveling direction to receive a desired wireless signal. The antenna unit receives two signals to improve reception sensitivity. It is desirable to be composed of a diversity antenna capable of doing so.

Referring to the process of integrated operation of each equipment of the ground apparatus through the interlocking of the integrated operating device and the ground device on the train integrated operating system configured as described above are as follows.

The first control unit 180 periodically collects the operation status of the main equipment of the ground apparatus 100 installed in the corresponding history, and when there is a failure device, failure information of the corresponding device is connected to the network. Transmitting to the integrated control unit 310 of the integrated operating device (300).

The integrated control unit 310 receives the failure occurrence information and displays the corresponding failure information on the screen of the monitoring unit 320 and generates an alarm alarm sound so as to notify the commander of the general command room about the failure, and near the corresponding history. By transmitting the corresponding failure occurrence information to the maintenance unit 400 of the communication branch located so that the management staff of the communication branch quickly dispatched. At this time, the integrated control unit 310 stores the failure occurrence information in the failure history database 330, and referring to the failover information previously stored for the failure, of the ground apparatus 100 that has transmitted the failure occurrence information. The action command is transmitted to the first controller 180.

The first control unit 180 outputs a control signal necessary for performing the action command received from the integrated control unit 310 to the other device that can replace the failed device or the failed device, and recovers the corresponding failure. The effects of the failure will be minimized until repair of the failed equipment.

3 is a view showing a failover process of the wireless transmitter unit of the integrated train operating system according to an embodiment of the present invention, the wireless transmitter 170 and the case where a failure occurs in the wireless transmitter 170 of the main equipment of the ground apparatus 100 It shows how to maintain the normal vehicle wireless communication function through the integration between the integrated operating device (300).

As shown in (a) of FIG. 3, a plurality of radio transmitters 170-1, 170-2, and 170-3 are installed along a running section of a train, and each radio transmitter 170-1, 170-2, 170 is installed. -3) is responsible for a certain wireless communication area (hereinafter referred to as cell coverage) according to the size of the output. The radio transmitters 170-1, 170-2, and 170-3 may be installed at relatively long distances from the history along the train tracks, and especially in the case of subways, which are installed in tunnels. Immediate maintenance is difficult.

Therefore, in the present invention, as shown in (b) of FIG. 3, when a failure occurs in the specific wireless transmitter 170-2, the first control unit 180 detects this and the integrated control unit 310 of the integrated operating device 300. And transmits the failure occurrence information, and the integrated control unit 310 displays the contents of the alarm on the screen of the monitoring unit 320 and transmits the failure occurrence information to the glass management device 400 of the communication branch.

In addition, the integrated control unit 310, as shown in (c) of FIG. 3, the wireless transmission unit 170-2 (hereinafter referred to as a "fault transmitter") in which a failure occurs to the first control unit 180 that transmitted the failure occurrence information. The first control unit 180 transmits an action command to increase the output of the wireless transmitter 170-1 (hereinafter, referred to as a shear transmitter) located at the front end. By outputting one control signal and increasing the output of the front end transmitter 170-1, the cell coverage is restored by enlarging the communication area of the front end transmitter 170-1 to include the area of the fault transmitter 170-2.

Thereafter, when the failure of the failure transmitter 170-2 is restored and normally operated, the integrated controller 310 receives the recovery information from the communication branch or the first controller 180 and returns to the normal state to the first controller 180. Command signal, and the first controller 180 outputs a control signal to the front end transmitter 170-1 and the fault transmitter 170-2 in which the fault is recovered, thereby transmitting the front end transmitter 170-1 and the fault transmitter ( By returning the output of 170-2 to the default setting value, each communication unit accepts normal cell coverage.

As described above, the present invention displays the failure information such as the history, equipment name, equipment location, failure state, etc. related to the failure through interworking between the wireless transmitter 170 and the integrated operating device 300 when the failure of the wireless transmitter 170 occurs. In addition, the commander of the general command room can immediately recognize this to take a prompt action, and at the same time can maintain the normal wireless communication and platform monitoring function through the appropriate control of the integrated operating device 300 for the wireless transmitter 170.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in the art.

1 is a block diagram of a train integrated operating system according to an embodiment of the present invention.

2 is a block diagram showing a detailed configuration of the train integrated operating system shown in FIG.

Figure 3 is a diagram showing a radio transmitter fail-over process of the integrated train operating system according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: ground apparatus 110: camera

120: screen splitter 130: content provider

141: surveillance video encoder 142: content video encoder

150: multiplexer 160: digital video broadcasting modulator

170: wireless transmission unit 180: first control unit

190: input unit 200: onboard device

241: surveillance video decoder 242: content video decoder

250: demultiplexer 260: digital video broadcasting demodulator

270: wireless receiving unit 280: second control unit

300: integrated operating device 310: integrated control unit

320: monitoring unit 330: failure history database

400: maintenance device

Claims (11)

It is provided in each history, and the surveillance video transmitted from multiple cameras installed around the platform or track and the content video composed of TV broadcasting or various commercial broadcasting are integrated into the digital video broadcasting signal, and then transmitted to the microwave. Ground equipment; An integrated operating device provided in a general command room, connected to the ground apparatus and a network, and configured to receive and output the surveillance image information from the ground apparatus; It is provided in a train that runs along a track, demodulates a digital video broadcasting signal received through microwave communication from the ground apparatus, and separates the surveillance video and the content video from the demodulated digital video broadcasting signal to drive or passenger of the train. On-vehicle device that outputs to them; It is configured to include, The ground apparatus periodically detects the operating states of the main equipments constituting the ground apparatus and transmits them to the integrated operating apparatus. The integrated operating apparatus receives and outputs operation state information of the main equipments from the ground apparatus, and transmits an action command signal for the main equipment having the failure to the ground apparatus when the failure of the main equipment is detected. Train integrated operating system using microwave communication. The method of claim 1, The ground device, A plurality of cameras installed around a platform or track of history; A screen splitter configured to output an independent analog image received from each camera into one image divided into a predetermined number; A surveillance video encoder receiving the video signal from the screen splitter and converting the video signal into a digital format to compress the video signal; A content providing unit providing content consisting of TV broadcasting or various commercial broadcasting; A content image encoder for converting and compressing a content image transmitted from the content providing unit into a digital format; A multiplexer for synthesizing the signals input from the surveillance video encoder and the content video encoder and outputting them as one signal; A digital video broadcasting modulator for modulating a signal output from the multiplexer according to a digital video broadcasting standard; A wireless transmitter for converting a digital video broadcast signal output from the digital video broadcast modulator into microwaves of a dedicated frequency and transmitting the microwave; A first control unit controlling each device constituting the ground device; An input unit configured to receive alarm related information from a user and transmit the alarm related information to the first controller; Train integrated operating system using microwave communication, characterized in that consisting of. The method of claim 2, The first control unit, By passing the alarm information input through the input unit to the audio input terminal of the surveillance image encoder, the input alarm information is encoded by the surveillance image encoder along with the platform image information to be delivered to the onboard device. Train integrated operation system using microwave communication. The method of claim 2, The wireless transmitter, A plurality of trains are installed in the up and down direction of the train so as to monitor the entire running section of the train, and the train integrated operation system using microwave communication, characterized in that the assignment is alternately assigned to one of the plurality of channels in each direction. . The method of claim 2, Dedicated frequency of the wireless transmission unit is integrated train operating system using microwave communication, characterized in that set to 18GHz. The method of claim 1, The on-vehicle device, A radio receiver for receiving microwaves from the radio transmitter of the terrestrial device; A digital video broadcasting demodulator for demodulating a signal of a digital video broadcasting standard transmitted from the wireless receiver; A demultiplexer for processing the demodulated signal by the digital video broadcasting demodulator to separate the surveillance video signal and the content video signal; A surveillance video decoder for decoding the surveillance video signal output from the demultiplexer and inputting the surveillance video signal to an engine room monitoring apparatus; A content video decoder for decoding the content video signal output from the demultiplexer and transmitting the decoded content video signal to a passenger guidance system; A second control unit controlling each device constituting the onboard device; Train integrated operating system using microwave communication, characterized in that consisting of. The method of claim 6, The second control unit, And extracting alarm information from the audio signal output from the audio output terminal of the surveillance video decoder, and transmitting the corresponding alarm information to the engine room monitoring apparatus when an alarm occurs. The method of claim 1, The integrated operating device, An integrated control unit configured to receive operation status information of main equipment of the ground apparatus from the first control unit of the ground apparatus to monitor malfunction and failure, and to transmit an action signal for the failing equipment to the first control unit; A monitoring unit which receives the failure information from the integrated control unit and outputs the information to a screen or a sound; A disability history database that stores disability history information for each history; Train integrated operating system using microwave communication, characterized in that consisting of. The ground equipment provided in each history, the integrated operation device of the general command room, and the maintenance device of the communication branch are connected by a network network, and the train is equipped with a onboard device that receives data from the ground apparatus through microwave communication. In the method of integrated operation of each equipment of the ground apparatus using the integrated operating system, Collects the operation status of major equipment installed in the history from the ground equipment periodically, and if there is a failure equipment, transmits failure information on the equipment to the integrated operating device. The integrated operating device receives the fault occurrence information transmitted from the ground apparatus, notifies the commander of the fault contents through a screen output and an alarm alarm, and refers to the fault information stored in advance for the fault to the ground apparatus side. Transmitting the action command, the train integrated operation method using the microwave communication, characterized in that for transmitting the failure occurrence information to the maintenance unit of the communication branch located in the vicinity of the history. The method of claim 9, When the integrated operating device receives the failure occurrence information transmitted from the ground device, the failure occurrence information is stored in the failure history database, and the ground that transmits the failure occurrence information with reference to the previously stored failover information for the failure. Train integration operation method using microwave communication, characterized in that for transmitting the action command to the device side. The method of claim 10, If the failing equipment is a wireless transmission unit performing a microwave communication function, The integrated operating device sends an action command to raise the output of the wireless transmitter located in front of the failed wireless transmitter to the ground apparatus that has transmitted the failure occurrence information. And the terrestrial device outputs a control signal corresponding to the action command to increase the output of the front end to restore the communication area of the failed wireless transmitter.

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