KR101634148B1 - Rail breakage detecting device and method thereof - Google Patents

Abstract

The present invention relates to a line break detection apparatus for a line break detection apparatus in a train control system using radio communication between a ground control system provided in a control section for controlling a train and a car control system provided in a train, A current sensing unit provided in the train detects a return current flowing through the rail during the running of the train and determines whether or not to detect the return current from the cutoff judgment unit connected to the current sensing unit, It is determined that the line is broken, and the cutting-off detection information according to the determination is transmitted to the on-vehicle control system or the terrestrial control system.
According to the present invention, by measuring the return current flowing through the rail through the current sensing unit mounted in the train and judging whether or not the rail is broken according to whether or not the return current is detected, It is easy to detect the incision.

Description

TECHNICAL FIELD [0001] The present invention relates to a rail break detection apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line break detection apparatus and method, and more particularly, to a line break detection apparatus and a method thereof for detecting a line break in a radio train control system.

A train is a mass transport transportation system in which a high degree of safety must be ensured first. Many devices have been continuously developed and used in order to secure the safety of a train and improve the efficiency of the train.

As the technology develops, the safety of trains is further strengthened, the convenience of train operation is further improved, and various types of information transmitted from a ground device to an on-board device in a wireless communication environment for unattended automatic operation have become various, Automatic Train Control Device (ATC) and Automatic Train Operation Device (ATO) have been developed and used.

On the other hand, the integrity of the railway should always be guaranteed for safe operation of the train. In particular, if a track is damaged, it can cause a serious accident and must be detected. For this purpose, there is a conventional method of detecting line break by a track circuit using a line as a part of an electric circuit.

In conventional track circuits, a plurality of electric circuits are formed in order to transmit information from the ground to a vehicle, and then a minute current flows. When a train passes through such an electric circuit, it short-circuits the current to transmit information from the ground to the vehicle, and detects that a train is present on the electric circuit. At this time, the flow of current means that the track has not been damaged, and incidentally, it is used to detect the line break. That is, the track circuit transmitter transmits a minute current together with the train running information, and the track circuit constitutes the line as one electric circuit to make the current flow. Then, the receiver detects the current flowing in the track, . In other words, if the line is normal, the current flowing through the line arrives at the receiver, but if the line is broken, the current flowing through the line will not reach the receiver. Through this, it can be confirmed that the section where the current is not detected in the receiver is a line breakage.

However, as a railway control system based on a wireless communication network is introduced, a track without a track circuit is implemented, which makes it difficult to detect a track break on a track without a track circuit.

[Patent Document 0001] Korean Patent Registration No. 10-0532920 (Orbital Circuit Current Measurement Device, Nov. 25, 2005)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-described problems, and it is an object of the present invention to provide a railway control system capable of measuring a return current on a rail by a current sensing unit provided in a train, And an object thereof is to provide a detection device and a method thereof.

The line breakage detection apparatus of the present invention is a line break detection apparatus in a train control system using radio communication between a terrestrial control system provided in a control section for controlling a train and an onboard control system provided on a train, A current detection unit for detecting a return current flowing through the rail during the running of the train and determining whether or not to detect the return current from the cutoff judgment unit connected to the current sensing unit, Judges that the line is broken, and transmits the discrimination detection information according to the judgment to the onboard control system or the terrestrial control system.

A method for detecting line breakage in a train control system using wireless communication between a ground control system provided in a control section for controlling a train and a vehicle control system provided in a train, Detecting a reverse current flowing through a rail on which a train is currently traveling, the current sensing unit mounted on the train; (b) if the return current is not detected using the received signal of the current sensing unit, the step of determining that the line is broken; And (c) if it is determined in the step (b) that the line is broken, the cut-off determination unit includes transmitting the discrimination information according to the determination to the onboard control system or the terrestrial control system via the wire / wireless communication unit.

According to the line break detection apparatus and method of the present invention, a return current flowing through a rail is measured by a current sensing unit provided in a train, and whether a line break is caused by the presence or absence of a return current detection is determined, It is possible to detect line breakage in the system.

1 is a block diagram showing the overall configuration of a radio train control system provided with a line break detection apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a block diagram showing a detailed configuration of the line breakage detection apparatus of Fig. 1. Fig.
3 is a flowchart illustrating a line break detection method according to a preferred embodiment of the present invention.
FIG. 4A is a circuit diagram illustrating a return path of a return current in a line break detection apparatus according to a preferred embodiment of the present invention, in which a train is located between a substation and AT1. FIG.
FIG. 4B is a circuit diagram for explaining a return path of a return current in a line break detection apparatus according to a preferred embodiment of the present invention, in which a train is located between AT1 and AT2.
5 is a view for explaining a measurement distance of a return current according to a position of a line current sensor in a line break detection apparatus according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Hereinafter, the line break detection apparatus of the present invention constructed as described above will be described in detail.

As shown in FIG. 1, the overall configuration of a radio traction control system environment provided with a line break detection apparatus according to a preferred embodiment of the present invention includes a ground control system 100, an on-board control system 200, a line break detection apparatus 300).

The terrestrial control system 100 is provided for each control period for controlling the train 10, and controls the train 10 that has entered each control period. The terrestrial control system 100 further includes a wireless communication unit 110, a train control unit 120, and a train information management unit 130.

The wireless communication unit 110 is provided for wirelessly transmitting information necessary for train control with the onboard control system 200.

The train control unit 120 generates and transmits a control pattern for controlling the position, speed, and the like of the train 10 to the onboard control system 200 so as to transmit a control command or directly to the train 10 And may be wirelessly controlled.

The train information management unit 130 is configured to store train information necessary for train control and to continuously monitor the train information in the train control monitoring unit. The train information includes, for example, train number, train speed, train travel period, Information, and the like.

The onboard control system 200 is provided in the train 10 and generates a control pattern including the position, speed, and the like of the train 10 by wireless communication with the terrestrial control system 100, And the like. The onboard control system 200 further includes a communication unit 210 for communication with the terrestrial control system 100 or the line breakage detection apparatus 300 and an onboard control unit 220 for controlling the train 10 according to the control pattern can do.

The line break-off detecting apparatus 300 is provided in the train 10 to measure the return current and determine whether or not the line break occurs. In particular, it is connected to the on-vehicle control system 200 to transmit the incision detection information to the onboard control system 200, thereby ensuring the integrity of the line. At this time, the line break detection apparatus 300 may be implemented in the on-board control system 200.

2, the line breakage detection apparatus 300 includes a current sensing unit 310, a cut determination unit 320, a memory 330, And a wired / wireless communication unit 340.

The current sensing unit 310 includes line current sensors and detects a return current flowing through the rail. At this time, the line current sensor is provided on the side of the train lower frame side of the train 10, close to the rail, so as to facilitate measurement of the return current. Particularly, in order to detect the return current flowing through the rails on both sides of the train 10 during traveling, it is preferable that the trains 10 are provided on the lower frame of the train 10 corresponding to the respective side rails, respectively. In addition, it is preferable that the line current sensor is divided into a front portion and a back portion of the train 10 so as to correspond to respective positions. The line current sensor measures the return current in consideration of the position of the pantograph which collects electricity according to the traveling direction of the train It is intended to operate the line current sensor differently.

Accordingly, the current sensing unit 310 may include all four line current sensors. In the line current sensors, two line current sensors are provided at the front of the train 10, and two line current sensors are provided at the rear of the train 10 Respectively. Also, a pair of front-end line current sensors are provided on the lower frame of the front portion of the train 10 at positions corresponding to the two side rails (the rails to which the wheels contact) Is provided on the lower frame of the rear portion of the train 10 at a position corresponding to the lower portion of the train 10.

FIG. 4A is a diagram illustrating an example in which a train is connected to a sub-station and a sub-station, and FIG. 4B shows the return path of the return current when the train is on the first AT transformer AT1 side and the return path of the return current when the train is on the first AT transformer AT1 side and the second AT transformer AT2 side. Path.

4A and 4B, the return current detected by the line current sensor is supplied to the train 10 through the pantograph and supplied through the substation, passes through the inside of the train 10, And then to the substation (or AT transformer side).

In addition to the return current on the return path, there is a ground current and a feedback current through a feeder. The ground current is a current supplied to the train 10 through the pantograph, Which corresponds to the current flowing through the electrode. In addition, the feedback current through the feeder flows in the same path as the return current, and the current that part of the current returns to the substation through the (-) feeder side. Among these currents, the current that can be detected through the actual line current sensor is the return current flowing in the rail, and this corresponds to the return current detected by the line current sensor.

4a and 4b show that the movement path of the return current, the ground current, and the negative feedback current varies depending on the location of the train 10 in each section where the substation and the AT transformer are located. In particular, And when the train 10 is traveling in the AT1 side transformer section, it is preferable to detect the return current of the loop (first loop, first loop) of the corresponding section. Similarly, in FIG. 4B, when the train 10 is traveling in the interval between the AT1 side transformer and the AT2 side transformer, it is preferable to detect the return current of the second loop.

5, the pantograph is configured to detect electric current through the caten grid and detect the return current. The pantograph detects the return current by selecting one of the line current sensors installed at the front and back portions according to the position of the pantograph. To the front and rear portions of the train 10, respectively. At this time, electric power can be supplied by selecting between the pontag of the front part or the pontragus of the back part, and the position where electric power is supplied is determined according to the traveling direction of the train 10. [ That is, electric power is supplied through the front pontage of the train 10 starting from the front part, and electric power is supplied through the pontoon of the back part of the train 10 starting from the occiput part.

The position of the pantograph is taken into consideration when detecting the return current, and it is preferable to detect the return current by the line current sensor at the position opposite to the position of the pantograph. The reason is that whether or not the movement path of the return current passes through the rail differs, and measurement error may occur. 5, assuming that a 10-car is 200 m in length and power is supplied through a front pontage, if the return current is measured by a line current sensor at the back of the vehicle, Which measures the return current through the actual rail at a distance of about 180 m, which can increase the measurement reliability. Therefore, it is preferable to detect the return current by using the line current sensor of the occiput portion when power is supplied from the pontag of the front head portion, and to detect the return current by using the front head line current sensor when power is supplied from the pontragus of the head portion.

A cutoff determination unit 320 is provided to detect whether a line break is caused by using the return current measured by the current sensing unit 310. [

The cut-off determining unit 320 receives the return current value measured from the current sensing unit 310, receives a reference current value considering the measurement error stored in the memory 330, It is judged that the line is broken. Further, it is determined that the line is not broken if the current is equal to or greater than the reference current value. If the line is broken according to the determination result, the discrimination detection information is generated and transmitted to the onboard control system 200 or the terrestrial control system 100. In addition, when the train 10 in motion enters the control section, the cutoff determination section 320 determines whether the return current is detected from the current sensing section 310 for each control section, and outputs the return current detection information for each section to the memory 330, or may be transmitted to the onboard control system 200 or the terrestrial control system 100.

Here, the discontinuity detection information is information including, for example, a discontinuity detection time, a discontinuity detection interval, and a return current detection value, and the return current detection information for each interval may include a return current detection value, have.

The wired and wireless communication unit 340 may transmit the discontinuity detection information to the onboard control system 200 or wirelessly transmit the discontinuity detection information directly to the terrestrial control system 100 at the request of the discard determination unit 320. [

The process of the line breakage detection method according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

The line break detection method of the present invention comprises a terrestrial control system 100 provided in a train control section for a radio train control system and an onboard control system 200 provided in the train 10, The line breakage detecting apparatus 300 connected to the onboard control system 200 can be used.

First, the line current (return current) is detected by the current sensing unit 310 provided in the train (S100). Thereafter, it is determined whether or not the line current is detected from the cut-off determination unit 320 connected to the current sensing unit 310 (S102). When the line current is not detected, the cutoff determination unit 320 determines that the line is cut off (S104). Thereafter, the ablation discrimination section 320 transmits discrimination detection information according to the judgment to the terrestrial control system 100 or the onboard supervision system 200 (S106). If the line current is detected in step S102, the severance determination unit 320 determines that the line is not broken (S108). Thereafter, the process returns to step S100, and the line current can be continuously detected.

10: train 100: ground control system
110: wireless communication unit 120: train control unit
130: Train information management unit 200: Onboard control system
210: communication unit 220:
300: line break detection unit 310: current sensing unit
320: Discrimination judgment section 330: Memory
340: Wired /

Claims (9)

1. A line break detection apparatus in a train control system using radio communication between a ground control system provided in a control section for controlling a train and an on-vehicle control system provided on a train,
A current sensing unit provided in the train detects a return current flowing through the rail during running of the train and determines whether or not the return current is detected from a cutoff judgment unit connected to the current sensing unit, Judging that the line is broken, and transmitting the discrimination information according to the judgment to the onboard control system or the terrestrial control system,
Wherein the current sensing unit includes a front head line current sensor and a back head line current sensor provided respectively at a front portion of the train and a rear portion of the body frame of the train so as to facilitate detection of the return current,
Wherein the line current sensor detects the return current by a line current sensor at a position opposite to a position of a power supply pantograph disposed at the front and rear portions of the frontal line current sensor and the occipital line current sensor. The line breakage detecting apparatus according to claim 1,
A memory for receiving and storing a reference value current in consideration of a measurement error when detecting a return current;
Judging whether or not to detect the return current by using a received signal from the current sensing unit, and judging that the line is broken if it is judged that the return current is less than the reference value current; And
And a wired / wireless communication unit for transmitting the coring detection information to the onboard control system or the terrestrial control system. 3. The apparatus according to claim 2,
Wherein the controller is configured to determine whether or not to detect a return current for each control section when the train in motion enters the control section, store the return current detection information for each section in the memory, Wherein the control unit is configured to transmit the control signal to the ground control system. The method according to claim 1,
The front head line current sensor and the back head line current sensor
And wherein the pair of traction circuits are provided in pairs at positions corresponding to the respective rails to detect the traction currents flowing through the two side rails, respectively. delete A track break detection method in a train control system using radio communication between a ground control system provided in a control section for controlling a train and an on-vehicle control system provided on a train,
(a) a current sensing unit including a front head line current sensor and a back head line current sensor in each of a front part of a train and a lower part of a body frame of a back part of the train, wherein the front head part line current sensor and the back head part line current sensor Detecting a return current flowing in a rail on which a train is currently traveling by a line current sensor at a position opposite to a position of the power supply pantograph installed in the rail;
(b) if the return current is not detected using the received signal of the current sensing unit, the step of determining that the line is broken; And
(c) if it is determined in the step (b) that the line is broken, the cut-off determination unit transmits the cut-out detection information according to the determination to the onboard control system or the terrestrial control system via the wire / wireless communication unit Way. 7. The method of claim 6, wherein step (a)
(a-1) detecting the return current for each section when the train in motion enters the control section;
(a-2) determining whether or not to detect a return current for each control section when the control section enters the control section, and storing the return current detection information for each section in a memory; And
(a-3) transmitting the return current detection information for each section to the on-board control system or the terrestrial control system. 7. The method of claim 6, wherein step (b)
(b-1) if the return current is detected, determining that the line is not broken; And
(b-2) returning to the step (a) after the determination of (b-1). The method according to claim 6, wherein the line breakage detection method
(d) receiving a reference value current in consideration of a measurement error and storing it in a memory,
Wherein when it is determined that the return current is detected by the cut-off determining section, it is determined that the line break is caused when the detected return current is equal to or lower than the reference value current.

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