KR20130080173A - Train control system and method using communication based train control system and fall back system - Google Patents

Abstract

PURPOSE: A train control system using a radio communication system and a fallback system, and a method thereof are provided to improve stability of a train service by being configured to automatically convert a data transmission system between a ground station and a train into a fallback system when the data transmission system is unavailable. CONSTITUTION: A radio communications system (10) comprises a train signal apparatus (110) and a ground signal apparatus (120). The train signal apparatus (110) radio-transmits the train service state information which includes the current position and speed information of a train. The ground signal apparatus (120) converts the train service state information which is delivered from the train signal apparatus into the train service control information which includes the permissible transfer authority information and the speed limit information; and wirelessly transmits the converted train service control information to the train signal apparatus. A fallback system (20) comprises a track circuit unit (210), a track occupation information transmission device, and an electronic interlocking (EI) device (230). The track circuit unit is provided to detect whether a train occupies a track or not. The track occupation information transmission device is provided to transmit the track occupation information which is detected by the track circuit unit. The electronic interlocking device controls the operation of the ground signal apparatus according to the information which is delivered from the track occupation information transmission device. [Reference numerals] (220) Track occupation information delivery device; (230) Electronic interlocking device; (240) Ground signal flag; (AA) Central integrated headquarter; (BB,CC,DD,EE) Field signal apparatus room; (FF) Train running direction; (GG) Track; (HH,KK) Tuning unit; (II,LL) Transmitter; (JJ,MM) Receiver; (NN) Fallback system

Description

TRAIN CONTROL SYSTEM AND METHOD USING COMMUNICATION BASED TRAIN CONTROL SYSTEM AND FALL BACK SYSTEM}

The present invention relates to a train control system and method using a wireless communication system and a fallback system. More specifically, the present invention is configured to automatically convert the data between the ground and the vehicle phase to the inability to fall / fall the fallback system due to an error in the RF-CBTC system that controls the train depending on the wireless communication, the train with a minimum protection function The present invention relates to a train control system and a method using a wireless communication system and a fallback system to allow the vehicle to operate normally.

In safety-critical systems, such as train control systems, it is important to transmit accurate train control information for organic train-to-train operation.

RF-CBTC (Radio Frequency-Communication Based Train Control System) is a system that collects control-related information such as position and speed from the onboard system periodically, determines the allowable movement authority and transmits it optimally. This is how the control is performed. However, since the RF-CBTC system is based on wireless communication, if the ground control system cannot detect the vehicle position in the event of a radio communication failure or a failure of the ground control system, there is a possibility of causing a fatal danger such as a train collision.

1 is a view for explaining a train control method based on conventional wireless communication.

Referring to FIG. 1, the conventional RF-CBTC terrestrial system is composed of a central command room and an on-site signal equipment room, and allows the allowable movement authority information including the speed limit and the movement speed to be controlled in order to minimize the interval between trains. send.

In addition, it operates by two-way wireless communication between the vehicle and the ground, and receives information including the speed limit and allowable movement authority from the ground and automatically controls it according to the static and dynamic speed profile.

In RF-CBTC, the safety distance is calculated by the calculated distance from the previous train. This can only be achieved by real-time continuous communication between the train and the ground signal system or between the train and the train.

As described above, according to the conventional method, only the wireless communication facility is constructed so that the train is controlled using the allowable movement right information from the ground to the vehicle. Therefore, if the information cannot be transmitted due to a failure or external interference of the wireless communication equipment, the tracking of the train location may fail, causing a train operation accident due to the suspension of the train or the lack of minimum safety equipment that can be checked by the crew. There is this.

The present invention is to control the operation of the train by using the fall-back system (Fall-Back System) even when a failure occurs in the Radio Frequency-Communication Based Train Control System (RF-CBTC), It is a technical problem to improve stability.

That is, an object of the present invention is to configure the train to automatically switch the data between the ground and the car phase to the inability to fall back to the fallback system due to an error in the RF-CBTC system that controls the train depending on the wireless communication, the train with a minimum protection function It is a technical problem to make it operate normally.

In a train control system using a wireless communication system and a fall-back system according to the present invention for solving such a problem, the wireless communication system includes a driving state information including current position information and current speed information of a train. On the basis of the on-vehicle signal device for transmitting wirelessly and the driving state information received wirelessly from the on-vehicle signal device, including the allowable movement authority information and the speed limit information of the train for each travel section in the entire travel section partitioned by unit track circuits. And a ground signal device for generating driving control information and wirelessly transmitting the vehicle control signal to the on-vehicle signal device. The fallback system includes a track circuit unit for detecting whether a train occupies track, and track information captured by the track circuit unit. Orbital occupancy information transmitting device for receiving and the orbit received from the orbital occupancy information transmitting device Depending on the existence information and being configured to include an electrical interlock controlling the operation of the ground beacon.

In a train control system using a wireless communication system and a fall-back system according to the present invention, the electronic interlocking apparatus included in the fallback system controls the operation of the ground signal when a failure occurs in the wireless communication system. Characterized in that.

In the train control system using a wireless communication system and a fall-back system according to the present invention, when the failure of the wireless communication system is recovered, the operation control of the ground signal by the electronic interlocking device is terminated and the wireless And returning to the normal mode by the communication system.

In a train control system using a wireless communication system and a fall-back system according to the present invention, each unit track circuit constituting the track circuit unit is an AF track circuit.

In the train control method using the wireless communication system and the fall-back system according to the present invention, the normal mode, the track circuit unit and the track occupancy information transmission by the wireless communication system including the on-board signal device and the ground signal device are transmitted. And a fall-back mode by a fallback system including a device and an electronic linkage device. In the normal mode, the on-vehicle signal device provides driving status information including current location information and current speed information of a train. Permissible movement right information of a train for each travel section in the entire driving section that is wirelessly transmitted to the ground signal device and the ground signal device is divided by unit track circuits based on the driving state information received wirelessly from the onboard signal device. And generating driving control information including speed limit information and wirelessly transmitting the vehicle control signal to the on-vehicle signal device. The circuit unit detects whether the train occupies the track, the track occupancy information transmitting device transmits the track occupancy information detected by the track circuit unit to the electronic linkage device, and the electronic linkage device transmits the track occupancy information transfer device. It is characterized in that for controlling the operation of the ground signal according to the received track occupancy information.

In a train control method using a wireless communication system and a fall-back system according to the present invention, when a failure occurs in the wireless communication system during the operation in the normal mode, the normal mode is switched to the fallback mode. The electronic interlock device included in the fallback system controls the operation of the ground signal.

In a train control method using a wireless communication system and a fall-back system according to the present invention, when the failure of the wireless communication system is recovered during the operation in the fallback mode, the fallback mode is switched to the normal mode. And the operation control of the ground signal by the electronic interlock device is terminated and returned to the normal mode by the wireless communication system.

In a train control method using a wireless communication system and a fall-back system according to the present invention, each unit track circuit constituting the track circuit unit is an AF track circuit.

According to the present invention, even when a failure occurs in the radio frequency-communication based train control system (RF-CBTC) by controlling the operation of the train using a fall-back system (Fall-Back System), The stability of the train operation is improved.

In addition, the vehicle is capable of emergency operation even in the event of an RF-CBTC facility failure during business operation, and the signal control and the train occupancy detector operate normally to ensure the minimum safety of the train operation.

In addition, it is possible to grasp the moving line of the emergency operation vehicle according to the fallback mode in the central command room on the ground has the effect of improving the overall operation efficiency.

In addition, since it detects a track loss, there is an effect that can protect the train from risk factors such as derailment.

In addition, there is an effect that can protect the train from hazards that may occur by operating the track switcher manually when the train occupancy in the branch section does not operate.

In addition, there is an advantage that the burden cost is not large compared to the degree of improvement of safety.

1 is a view for explaining a train control method based on conventional wireless communication.
2 is a diagram illustrating a train control system using a wireless communication system and a fall-back system according to an exemplary embodiment of the present invention.
3 is a diagram illustrating an example of a detailed configuration of a train control system using a wireless communication system and a fall-back system according to an exemplary embodiment of the present invention.
4 is a view for explaining the operation of the ground signal in the normal mode and the fallback mode.
FIG. 5 is a diagram for describing an example in which a driver manually operates a train with reference to information displayed by a ground signal in a fallback mode.
6 is a diagram illustrating a train control method using a wireless communication system and a fall-back system according to an embodiment of the present invention.

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

2 is a view showing a train control system using a wireless communication system and a fall-back system according to an embodiment of the present invention, Figure 3 is a view showing an example of a specific configuration of an embodiment of the present invention.

2 and 3, a train control system using a wireless communication system 10 and a fall-back system according to an embodiment of the present invention is a wireless communication system operating in a normal mode ( 10) and a fallback system 20 operating in a fall-back mode.

The wireless communication system 10 includes a vehicle onboard signal device 110 and a ground signal device 120.

The onboard signal device 110 wirelessly transmits driving state information including current location information and current speed information of a train to the ground signal device 120, and receives driving control information from the ground signal device 120.

The ground signal device 120 provides the allowable movement authority information and the speed limit information of the train for each travel section in the entire travel section partitioned by the unit track circuits based on the driving status information received wirelessly from the onboard signal device 110. Generate driving control information including the wireless transmission to the on-vehicle signal device 110.

For example, the ground signal device 120 may be configured with a wireless access point (AP) installed in each station, an on-site signal equipment room, and a central general command room.

The access point AP is a means for transmitting driving control information to the onboard signal device 110 through wireless communication with a wireless communication module provided in a train, and receiving driving state information from the onboard signal device 110.

The on-site signal equipment room transmits the driving status information received through the access points installed in each history to the central command center, and the driving control information received from the central command center is connected to the on-board signal device through the access point. Control to be transmitted to (110).

The general command center receives the operation status information of the trains in the entire operating section from the field signal equipment rooms, and based on this, the allowable movement authority information and the speed limit of each train in the operating section partitioned by the unit track circuits. It generates the operation control information including the information, and performs the function to control it to be transmitted to the on-vehicle signal device 110 provided in the train through the field signal equipment room and the access point.

The train control mode by the wireless communication system 10 including the on-vehicle signal device 110 and the ground signal device 120 is a normal mode, and the normal mode is before the failure of the wireless communication system 10 is detected. It operates in the basic mode for train control.

During the train control process in the normal mode, when a failure occurs in the wireless communication system 10, the fallback mode using the fallback system 20 (Fall-Back mode) is switched. As will be described later, in the fallback mode, the driver manually drives the train with reference to the information displayed on the ground signal 240.

The fallback system 20 includes a track circuit unit 210, a track occupancy information transmitting device 220, an electronic interlocking device 230, and a ground signal device 240.

The track circuit unit 210 is a means for detecting whether the train occupies the track, and is composed of unit track circuits partitioned over the entire track. These unit track circuits are electrically insulated from each other and occupy a closed section in which only one railway vehicle can operate at the same time. When the railway vehicle enters the unit track circuit, a short circuit occurs in the unit track circuit by the wheels of the railway vehicle, and it is detected whether the unit track circuit is occupied by the railway vehicle through the short circuit. The unit track circuits are calculated based on the safety distance at which the train can stop according to the grade or curve of the track.

For example, each unit track circuit constituting the track circuit unit 210 detects whether or not the track circuit is occupied by a railroad vehicle by detecting whether a track circuit is shorted by using an audio frequency band signal. It may be configured as an AF track circuit.

The track occupancy information transmitting device 220 is a means for transmitting the track occupancy information detected by the track circuit unit 210 to the electronic linkage device 230.

An example of a specific operation of the track circuit unit 210 and the track occupancy information transmitting device 220 will be described below.

The track circuit is composed of a circuit using a track as a part of an electric circuit, and the circuit is mainly composed of an electric circuit for detecting the presence of a train as a short circuit between rails by the axle of the vehicle. In the present invention, an AF track circuit is used. When the AF track rack, that is, the track occupancy information transmitting device 220 transmits the occupancy information to the electronic linkage device 230, the electronic linkage device 230 controls the ground signal 240, so that the driver may move the train in the fallback mode. Makes it possible to operate manually.

For example, the unit track circuit may be composed of a transmitter, a tuning unit, and a receiver.

The transmitter generates the train detection frequency required for the specific track circuit and generates the indicated speed code frequency of the square wave according to the signal manifestation conditions. The train detection frequency and the indicated speed code frequency are modulated according to the carrier frequency, and then the receiver track signal is transmitted through the amplification process.

When the train is not occupied in the track section, the train detection signal is transmitted to the receiver through the receiver side tuning unit. The received signal is amplified and demodulated to form a square wave and then transmitted through the AF track rack, that is, the track relay of the track occupancy information transmitting device 220, thereby detecting the non-occupancy state of the track circuit. When the train enters the boundary point of the track section, the track rail is shorted by the axle of the train, and the receiving section detects the track occupied state by operating the track relay of the AF track rack by reducing the received track signal below the minimum operating level.

This will be described in more detail as follows.

1) Determine whether to occupy

The AF track circuit system divides the track into a predetermined portion using frequency and electrically insulates, and configures each insulated portion as one circuit. If the frequency of the transmitter is transmitted to the receiver, it is not occupied.

2) ground signal control

The track circuit transmits the occupancy information to the electronic interlock device 230. The interlock stops the access beacon when occupying, slows down the old signal before occupying, and controls the beacon with the logic of entry when the permit is allowed.

3) Rail breakage detection

Even when the rail is broken, the track circuit is short-circuited like the operation method of occupying the train. If the occupancy information continues and compares with the occupancy information of the train, it checks the rail loss and detects the loss. It also protects the entrance automatically in case of loss.

The electronic interlock device 230 controls the operation of the ground signal 240 according to the track occupancy information received from the track occupancy information transmitting device 220.

The electronic interlock device 230 does not operate when the wireless communication system 10 is operating normally and is in a normal mode, but controls the operation of the ground signal signal 240 when a failure occurs in the wireless communication system 10. do.

In addition, when a failure occurs in the wireless communication system 10 to switch to the fallback mode and the failure of the wireless communication system 10 is restored, the operation control of the terrestrial signal signal 240 by the electronic interlocking device 230 is terminated. Returning to the normal mode by the wireless communication system 10.

In addition, the electronic linkage device 230 may be configured to protect the line changer when receiving the track occupancy information by the train, and in the case of a track loss, the track circuit is electrically shorted so that the track circuit is electrically shorted. By configuring the display to be the same as the state occupied by the train, it is possible to automatically protect the entry of the train at the time of loss.

The ground signal 240 is divided into a normal mode and a fallback mode under the control of the electronic interlock device 230, and its operation is controlled.

4 is a view for explaining the operation of the ground signal in the normal mode and the fallback mode, and FIG. 5 is a view for explaining an example in which the driver manually operates the train with reference to the information displayed on the ground signal in the fallback mode. .

4 and 5, in the normal mode, the ground signal 240 does not operate and is displayed in black. In addition, in the fallback mode, the ground signal 240 operates in red, green, and yellow colors, and the driver manually controls the driving of the train with reference to the signal displayed on the ground signal 240. That is, when the red signal is displayed on the ground signal 240, the driver stops the operation of the train on the track, and when the green signal is displayed on the ground signal 240, the train enters the track at the normal speed. When the yellow light is displayed on the ground signal 240, the driver enters the track while moving slowly.

6 is a diagram illustrating a train control method using a wireless communication system and a fall-back system according to an embodiment of the present invention. Hereinafter, a method according to an embodiment of the present invention will be described while avoiding overlapping with the system according to an embodiment of the present invention described above in detail.

2, 3, and 6, a train control method using a wireless communication system 10 and a fall-back system according to an embodiment of the present invention is a vehicle signal device 110 and a ground signal Normal mode by the wireless communication system 10 including the device 120 and by the fallback system including the track circuit unit 210 and the track occupancy information transmitting device 220 and the electronic interlocking device 230. It is configured in fall-back mode.

<Normal mode>

In the normal mode, first, in step S10, the on-vehicle signal device 110 performs a wireless transmission of the driving status information including the current position information and the current speed information of the train to the ground signal device 120.

Next, in step S20, the allowable movement authority of the train for each operating section in the entire operating section partitioned by the unit track circuits based on the driving state information received wirelessly from the onboard signal device 110 The process of generating the driving control information including the information and the speed limit information and wirelessly transmitting to the onboard signal device 110 is performed.

Thereafter, when detecting that the failure has occurred in the wireless communication system 10 through step S40, the operation according to the normal mode is terminated, and the switch to the fallback mode described later.

<Fall-Back mode>

In parallel with performing the normal mode through the above-described steps S10 and S20, a process of detecting whether the track circuit 210 occupies the track of the train is performed through step S30.

The track occupancy information detected by the track circuit unit 210 is transmitted to the electronic linkage device 230 via the track occupancy information transmission device 220. In step S50, the electronic linkage device 230 transmits the track occupancy information transmission device ( Control the operation of the ground signal 240 according to the track occupancy information received from 220. Step S60 is a process in which the driver manually operates the train with reference to the information displayed on the ground signal 240 whose operation is controlled by the electronic interlocking device 230.

If a failure occurs in the wireless communication system 10 and the failure of the wireless communication system 10 is restored during the operation while switching to the fallback mode, the fallback mode is terminated, and the process returns to step S10, and the wireless communication system 10 is returned to the wireless communication system 10 again. Operation of the normal mode is performed.

As described in detail above, according to the present invention, even when a failure occurs in a radio frequency-communication based train control system (RF-CBTC), a train using a fall-back system is used. By controlling the operation of the, the stability of the train operation is effective.

In addition, the vehicle is capable of emergency operation even in the event of an RF-CBTC facility failure during business operation, and the signal control and the train occupancy detector operate normally to ensure the minimum safety of the train operation.

In addition, it is possible to grasp the moving line of the emergency operation vehicle according to the fallback mode in the central command room on the ground has the effect of improving the overall operation efficiency.

In addition, since it detects a track loss, there is an effect that can protect the train from risk factors such as derailment.

In addition, there is an effect that can protect the train from hazards that may occur by operating the track switcher manually when the train occupancy in the branch section does not operate.

In addition, there is an advantage that the burden cost is not large compared to the degree of improvement of safety.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is obvious that any person skilled in the art may make various modifications and imitations without departing from the scope of the technical idea of the present invention.

10: wireless communication system
20: Fallback System
110: onboard signal device
120: ground signal device
210: track circuit section
220: track occupancy information transmission device
230: electronic interlock
240: ground signal

Claims (8)

In a train control system using a wireless communication system and a fall-back system,
The wireless communication system
On-vehicle signaling device for wirelessly transmitting the driving status information including the current position information and the current speed information of the train; And
Generating driving control information including allowable movement authority information and speed limit information of the train for each driving section in the entire driving section partitioned by unit track circuits based on the driving state information wirelessly transmitted from the onboard signaling device; It is configured to include a ground signal device for wireless transmission to the onboard signal device,
The fallback system
A track circuit unit for detecting whether the track occupies the train;
A track occupancy information transmitting device for transmitting track occupancy information detected by the track circuit unit; And
And an electronic interlock device for controlling the operation of the ground signal according to the track occupancy information received from the track occupancy information transmitting device. The train control system using the wireless communication system and the fallback system. The method according to claim 1,
The electronic interlock device included in the fallback system controls the operation of the ground signal when a failure occurs in the wireless communication system, the train control system using the wireless communication system and fallback system. The method of claim 2,
When the failure of the wireless communication system is recovered, the operation control of the ground signal by the electronic interlock device is terminated and the normal mode by the wireless communication system, characterized in that the train using the wireless communication system and fallback system Control system. The method of claim 2,
Each unit track circuit constituting the track circuit unit is an AF track circuit (AF Track Circuit), a train control system using a wireless communication system and fallback system. In a train control method using a wireless communication system and a fall-back system,
A normal mode by a wireless communication system including a vehicle onboard signal device and a ground signal device; And
It is composed of a fall-back mode (fall-back mode) by the fallback system including a track circuit unit, track occupancy information transmission device and electronic interlocking device,
In the normal mode,
The vehicle signaling apparatus wirelessly transmits driving status information including the current position information and the current speed information of the train to the ground signaling apparatus, and is based on the driving status information received by the ground signaling apparatus wirelessly from the vehicle signaling apparatus. Generating driving control information including allowable movement authority information and speed limit information of each train in each driving section divided by track circuits, and wirelessly transmitting it to the vehicle signaling device;
In the fallback mode,
The track circuit unit detects whether the train occupies the track, the track occupancy information transmitting device transmits the track occupancy information detected by the track circuit unit to the electronic linkage device, and the electronic linkage device from the track occupancy information transfer device. A train control method using a wireless communication system and a fallback system, characterized in that for controlling the operation of the ground signal according to the received track occupancy information. 6. The method of claim 5,
When a failure occurs in the wireless communication system during the operation in the normal mode,
Switching from the normal mode to the fallback mode, characterized in that the electronic interlock device included in the fallback system controls the operation of the terrestrial signal, a wireless communication system and a train control method using a fallback system. The method of claim 6,
When the failure of the wireless communication system is recovered during the operation in the fallback mode,
By switching from the fallback mode to the normal mode, the operation control of the ground signal by the electronic interlocking device is terminated and returned to the normal mode by the wireless communication system. Train control method. The method of claim 6,
Each unit track circuit constituting the track circuit unit is an AF track circuit (AF Track Circuit), a train control method using a wireless communication system and fallback system.

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