KR100945851B1 - The railway turnout detection system and the method of detecting railway turnout - Google Patents

Abstract

The present invention relates to a rail branch detection system of a train and a branch detection method thereof, comprising: a plurality of eddy current sensors measuring a motion signal of a track when a train moves a branch section of a track, and a response signal detected through the eddy current sensors It is composed of data processing means for determining the direction of the branch by collecting the train, the train detects the response signal from the eddy current sensors when moving the branch section and compares the detection sequence of the eddy current sensors with time according to the train left Or it is determined whether the branching to the right side.

According to the present invention has the advantage of detecting whether the branch line of the train by using the eddy current sensor installed on the train can accurately and quickly check whether the entry into the branch section, the installation of the ground equipment in the way to detect the branch directly from the vehicle This eliminates the need for cost savings in terms of installation, operation and maintenance.

Train, track, branch, eddy current sensor

Description

The railway turnout detection system and the method of detecting railway turnout}

1 is a block diagram of a track branch detection system of a train according to the present invention,

2 is a detailed configuration diagram of the eddy current sensor module for detecting the line branch of the train according to the present invention,

3 is a diagram schematically showing a state in which a train moves in a track branch section,

Figure 4 is a graph showing the response characteristics of the eddy current sensor module when the train left branch,

5 is a graph showing the response characteristics of the eddy current sensor module when the train on the right branch;

6 is a control flowchart illustrating a track branch detection process of a train according to the present invention.

*** Explanation of symbols for main parts of drawing ***

1: train 10: track

20: branch section 100: eddy current sensor module

110,120,130,140,150,160: eddy current sensor

200: data processing means 210: control unit

220: memory unit 230: interface unit

240: clock generator 250: data input processor

300: vehicle controller 400: ground controller

The present invention relates to a track branch detection system of a train and a branch detection method thereof. More specifically, the present invention relates to a system capable of detecting whether a branch is directly in a train when passing through a railway track branch, and such a railway track branch. The present invention relates to a method of detecting whether a train diverges in a section.

In general, the control method of the train is being developed from the ground-based control method to the wireless communication-based control method.

At this time, in order to control the train based on wireless communication, it is necessary to grasp the exact speed and location of the train moving on the track in real time.

On the other hand, in the current wireless communication-based train control system, tacometa is installed on the train to detect the speed and position of the train and calculates the speed by measuring the number of revolutions of the wheels of the train, and is installed every certain section of the train. Use the ballis information to correct the position.

However, when a train moves through a branch section of a track, only the information of tacometa and ballis cannot confirm whether the train is in the correct branch as soon as the train enters the branch section of the track. There was also a problem that can not be confirmed whether the normal branch of the train.

Therefore, the method of checking on the ground and the method of checking on the vehicle is used as a method for detecting the track branch of a train.

At this time, the method of checking on the ground can be installed to determine whether the train has branched by installing the axle detector on the ground track located in the branch section to detect whether the train has moved, and the method of checking on the vehicle detects the direction of movement of the train. By using sensors such as gyroscopes or electronic compasses or image recognition technology, it is possible to check whether the train is branched.

By the way, if the ground equipment is used to check the branching of the track, it is possible to detect the exact direction of the branch of the train, but the installation of additional ground equipment is very expensive to install and maintenance, and to minimize the ground equipment. It is also undesirable for the application of wireless communication based train control systems.

On the other hand, when the gyroscope or the electronic compass is used to detect the direction of movement of the train directly in the train, the gyroscope and the electronic compass cannot measure the characteristics of the gradual angle change so that the train moves at a gentle angle. When entering the railway branch section of trains, it was impossible to detect the immediate branching direction, and it was impossible to accurately detect the branching of trains in areas where frequent and complicated track branches such as vehicle bases occurred.

Accordingly, an object of the present invention is to solve such a problem, an object of the present invention is to provide a railway branch detection system and the branch of the train that can accurately detect the presence or absence of the branch directly from the train as soon as the train enters the track division without the aid of additional ground equipment. It is to provide a detection method.

Another object of the present invention can be utilized in a wireless communication-based train control system by detecting whether the track branch directly in the train, the branch line detection system of the train and its branch detection can minimize the installation, operation and maintenance costs To provide a method.

In particular, the present invention installs an eddy current sensor module in the lower part of the train to detect the sequential order of the eddy current sensor when the train passes through the branch section of the rail line branch detection system and the branch detection method of the train to detect whether the train branching To provide.

The present invention for achieving the above object relates to a track branch detection system of a train; It consists of a plurality of eddy current sensors for measuring the response signal of the line when the train moves the branch section of the track, and data processing means for collecting the response signal detected by the eddy current sensors to determine the direction of the branch of the train. It is done.

Here, the eddy current sensors are an eddy current sensor module arranged in a line to maintain a constant interval, the eddy current sensor module is characterized in that provided in the direction orthogonal to the traveling direction of the train at the bottom of the train.

The eddy current sensors detect the line and output the response signal, which is inputted to the data processing unit, and compares the detection sequence of the eddy current sensors with time to determine whether the train has branched to the left or the right.

In addition, the data processing means includes a control unit for determining whether a train is diverted using a response signal detected by the eddy current sensors, a memory unit in which a monitoring program is embedded, and a clock generation unit for generating a clock for driving the control unit. And, it characterized in that it is configured as a power supply.

The data processing means may further include an interface unit for transmitting branch information to the on-vehicle controller of the train when the controller determines whether to branch the train.

The data processing means may further include a data input processing unit for converting an analog signal type received from the eddy current sensors into a digital signal and inputting the digital signal to the controller.

The data input processing unit is configured as an A / D converter.

The present invention also relates to a track branch detection method of a train; A first step of detecting a response signal from a plurality of eddy current sensors provided at a lower portion of the train in a direction orthogonal to a traveling direction of the train when the train moves a branch section; A second step of converting a response signal in the form of an analog signal received from the eddy current sensor into a digital signal; And a third step of determining whether the train has branched to the left or the right by comparing the detection sequence of the eddy current sensor according to time when the response signals converted into the digital signals are input.

Further, after the third step, if it is determined that the train is diverging to the left or right in the branch section of the track, the fourth step of generating the branch information and transmitting to the on-vehicle controller of the train; characterized in that it further comprises.

With reference to the accompanying drawings, the track branch detection system and the branch detection method of the train according to the present invention will be understood by the embodiments described in detail below.

At this time, Figure 1 is a configuration diagram of the line branch detection system of the train according to the present invention, Figure 2 is a detailed configuration diagram of the eddy current sensor module for the line branch detection of the train according to the present invention, Figure 3 is a track branch section 4 is a diagram schematically illustrating a state in which a train moves, and FIG. 4 is a graph illustrating a response characteristic of the eddy current sensor module when the train is on the left branch, and FIG. 5 is a response of the eddy current sensor module when the train is on the right branch. 6 is a graph showing characteristics, and FIG. 6 is a control flowchart illustrating a track branch detection process of a train according to the present invention.

First, according to FIGS. 1 to 3, the line branch detection system of the train according to the present invention detects whether or not the train line branches by using an eddy current sensor.

Such a track branch detection system of a train according to the present invention, the eddy current sensor module for measuring the response signal according to the branch of the track 10 using the eddy current (Eddy Current) when the train 1 moves on the track 10 And a data processing means 200 which collects the response signal sensed by the eddy current sensor module 100 and determines whether to branch.

At this time, the eddy current is a current generated in the conductor by the electromotive force occurs when the magnetic field generated around the coil acts on the conductor when the conductor is close to the coil through which the alternating current flows. .

The eddy current sensor module 100 is a plurality of eddy current sensors (110,120,130,140,150,160) arranged in a row, the eddy current sensors in a direction orthogonal to the traveling direction of the train (1) below the train (1) Install the eddy current sensor module 100 so that the 110, 120, 130, 140, 150 and 160 are located.

At this time, the eddy current sensor module 100 as shown in the figure, but arranged only six eddy current sensors 110, 120, 130, 140, 150, 160 in a row, by placing the eddy current sensors in a plurality or multiple rows to determine more accurate response characteristics All of which are within the same technical category.

On the other hand, the eddy current sensors 110, 120, 130, 140, 150, 160 is a magnetic field is formed in proportion to the intensity and frequency of the current applied to the coil portion of the sensor and the eddy current is generated on the surface of the metal base material by the magnetic field, the nose of the sensor by the generated eddy current The magnetic field is formed in a direction opposite to the direction of the magnetic field generated in some to cause a change in the impedance of the sensor coil portion, and accordingly a known sensor using the principle that the voltage across the coil is changed.

Accordingly, the eddy current sensors 110, 120, 130, 140, 150 and 160 are installed at the center lower portion of the train 1, and when the train 1 moves on the track 10, in particular, when passing through the branch section 20 of the track 10, As a result, the eddy current sensors 110, 120, 130, 140, 150, and 160 become part of the branch section 20 in a non-contact manner so that eddy currents are generated in the conductor lines 24a and 22b, thereby outputting a response signal due to impedance change.

Hereinafter, each component constituting the track branch detection system of the train according to the present invention will be described in more detail.

First, the eddy current sensor module 100 is installed in the direction orthogonal to the longitudinal direction of the train 1 in the lower portion of the train 1, a plurality of eddy current sensors 110, 120, 130, 140, 150, 160 are arranged to maintain a constant interval Structure.

In this case, the eddy current sensors 110, 120, 130, 140, 150, and 160 are arranged to maintain a predetermined interval from the left side to the right side of the train 1, and the eddy current sensors 110, 120, 130, 140, 150, and 160 each have an independent output channel.

Therefore, when a specific eddy current sensor (one of 110, 120, 130, 140, 150, 160) detects a line 10 made of a conductor, and a response signal as a sensor output is input to the data processing means 200, the detection sequence of the eddy current sensor according to time is compared and compared. It is determined whether the track branch of the train 1 has occurred to the left or to the right.

That is, while the train 1 having the eddy current sensor module 100 moves on the track 10 moves on the track 10, the train 1 is operated by the left track (also referred to as a 'track changer'). When branching to 22, the lower portion of the train 1 moves across the top of one of the right tracks 24a and 24b.

Therefore, when the wheels 1a and 1b of the train move along the left tracks 22a and 22b, among the plurality of eddy current sensors 110, 120, 130, 140, 150, and 160 constituting the eddy current sensor module 100 provided in the lower part of the train 1. The upper portion of the line 24a is sequentially moved from the eddy current sensor 110 on the left in the traveling direction of the train 1 to the eddy current sensor 160 on the right, and outputs a response signal.

On the other hand, when the train 1 branches to the right tracks 24a and 24b, the lower part of the train 1 moves across the top of one track 22b of the left tracks 22a and 22b.

Therefore, when the wheels 1a and 1b of the train 1 move along the right track 24a and 24b, a plurality of eddy current sensors constituting the eddy current sensor module 100 provided in the lower part of the train 1 Of the 110, 120, 130, 140, 150, 160 in the reverse direction from the eddy current sensor 160 on the right in the traveling direction of the train 1 to the eddy current sensor 110 on the left in order to move the upper portion of the line 22b and outputs a response signal.

On the other hand, the data processing means 200 is a control unit 210 for determining whether the branch of the train using the response signal detected by the eddy current sensor module 100, a memory unit 220 that the monitoring program is built-in, To the interface unit 230 for transmitting the branch information on whether the branch to the on-vehicle controller 300 provided in the train (1), and the clock generator 240 for generating a clock for driving the control unit 210 It is composed.

Accordingly, the data processing means 200 quickly determines whether the branch of the train 1 is branched or not by using the response signal of the eddy current sensor module 100 so that the driver can quickly and accurately confirm the branching. do.

At this time, the data processing means 200 is further provided with a data input processing unit 250, the response signal in the form of an analog signal received from a plurality of eddy current sensors 110, 120, 130, 140, 150, 160 constituting the eddy current sensor module 100 Is converted into a digital signal and input to the control unit 210.

The controller 210 compares the response signals continuously detected from the plurality of eddy current sensors 110, 120, 130, 140, 150, and 160 to determine which direction the train 1 is branching at the branch point 20 to determine whether the branching and branching are possible. Generates branch information about

At this time, the data input processing unit 250 is configured as an A / D converter 252 for digitizing the analog signal type of the analog signal detected by the eddy current sensors 110, 120, 130, 140, 150, 160 for each channel.

Accordingly, the data input processing unit 250 and the control unit 210 may be configured as one digital signal processor (DSP). The branch information generated by processing such digitalized response signal may be an interface unit. It is transmitted to the vehicle controller 300 through the 230.

On the other hand, the interface unit 230 may be configured to transmit the branch information to the vehicle controller 300 by wire, or to configure the wireless module to the vehicle controller 300 for convenience and speed of installation work. .

More specifically, the data processing means 200 may be connected by a cable provided with a connection connector (not shown) when the interface unit 230 is wired, RF in the case of a wireless transmission module A known one consisting of a transmission / reception module and an antenna can be used.

In addition, the data processing means 200 is provided with a power supply unit 260 for driving this, such a power supply unit 260 may be configured to receive power through a battery or battery for independent driving, It is preferable to use the power source of the train 1 for continuous driving.

The on-vehicle controller 300 installs and operates branch information of the corresponding train 1 on the ground, and comprehensively manages branch information by wirelessly transmitting to the ground controller 400 which collects and manages traffic information of a plurality of trains. Done.

Hereinafter, the track branch detection process of a train according to the present invention will be described in detail with reference to FIGS. 1 to 6.

First, the train 1 is driven on the track 10. (S100)

When the train 1 moves on the general track 10 instead of the branch section 20 while the train 1 moves, the plurality of eddy current sensors 110, 120, 130, 140, 150, and 160 constituting the eddy current sensor module 100 are connected to the conductor chain 10. Because it does not detect, the response signal is not output and it operates normally.

As such, when the train 1 passes through the branch section 20 while the train 1 is in operation, the eddy current sensors 110, 120, 130, 140, 150 and 160 of the eddy current sensor module 100 detect a line to generate a response signal. S110)

That is, for example, when the train 1 branches to the left tracks 22a and 22b, the answering surfaces of the wheels 1a and 1b of the train 1 are moved along the left tracks 22a and 22b.

At this time, the eddy current sensor module 100 is installed in the lower portion of the train 1 in a direction orthogonal to the longitudinal direction of the train 1, and the upper portion of one of the right tracks 24a and 24b is fixed. It will move across the street.

Accordingly, as shown in FIG. 4, the eddy current sensors 110, 120, 130, 140, 150, and 160 sequentially rotate from the eddy current sensor 110 on the left side of the traveling direction to the eddy current sensor 160 on the right side according to the time (0 to t5). The upper portion of the line 24a is moved to detect a response signal.

From the response signal of the left eddy current sensor 110 to the response signal of the right eddy current sensor 160 has a time (0 ~ t5) interval and is sequentially input to the data processing means 200.

Accordingly, the digital signal is a response signal in the form of an analog signal received from a plurality of eddy current sensors 110, 120, 130, 140, 150, and 160 constituting the eddy current sensor module 100 through the data input processing unit 250 of the data processing means 200. It is converted to (S120).

The response signals converted into digital signals are input to the controller 210, and the controller 210 determines whether the response signal is input from the eddy current sensor 110 on the left side or the response signal from the eddy current sensor 160 on the right side. The direction of the branch is determined by comparing with (S130).

That is, when the response signals are sequentially detected from the right eddy current sensor 160 with the time difference in order from the left eddy current sensor 110, it is determined that the train 1 branches to the left tracks 22a and 22b. .

Accordingly, it generates branch information indicating that the train 1 is branching to the left in the branch section 20 and transmits it to the vehicle controller 300 of the train 1 through the interface unit 230 (S140). )

The vehicle controller 300 wirelessly transmits the branch information to the ground controller 400.

Therefore, the ground controller 400 receives the branch information from the vehicle controller 300, which is used as a data that can be integrated monitoring by receiving a branch signal from a plurality of other trains.

On the other hand, unlike the branching to the left side, when the train 1 reaches the branch section 20 and branches to the right track 24a, 24b, the wheels 1a, 1b of the train along the right track 24a, 24b. The answer surface of is in contact and moves.

Accordingly, the train 1 moves across the upper portion of one of the left lines 22a and 22b at a predetermined distance.

Accordingly, as shown in FIG. 5, the eddy current sensors 160, 150, 140, 130, 120, and 110 sequentially rotate from the eddy current sensor 160 on the right side of the traveling direction to the eddy current sensor 110 on the left side according to time (0 to t5). The upper portion of the line 22b is moved to detect a response signal.

The response signal of the right eddy current sensor 160 to the response signal of the left eddy current sensor 110 has a time (0 to t5) interval and is sequentially input to the data processing means 200.

Accordingly, the digital signal is a response signal in the form of an analog signal received from a plurality of eddy current sensors 110, 120, 130, 140, 150, and 160 constituting the eddy current sensor module 100 through the data input processing unit 250 of the data processing means 200. When the input signal is inputted to the controller 210 and the controller 210 detects the response signals from the left eddy current sensor 110 in order from the left eddy current sensor 160 in order, the train 1 is right. It determines with branching to the tracks 24a and 24b.

Accordingly, the branch information generating branch information indicating that the train 1 is branching to the right in the branch section 20 is transmitted to the on-vehicle controller 300 of the train 1 through the interface unit 230, and the vehicle The controller 300 wirelessly transmits such branch information to the ground controller 400.

Although the preferred embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to be substantially equivalent to the embodiment of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

As can be seen from the above description, according to the present invention, there is an advantage that the branch line of the train can be detected accurately and quickly by using an eddy current sensor installed in the train, and it is possible to check whether the branch section is entered quickly and directly. It does not require the installation of ground equipment in the way of detecting the system, which reduces cost in terms of installation, operation and maintenance.

In addition, the present invention has the advantage of improving the reliability of the location detection of the train to determine whether the branch of the train quickly and accurately without the installation of additional ground equipment when applied to the wireless communication-based train control system.

In addition, by utilizing the present invention, it is possible to check whether a branch section is directly entered from a train, and when a combination of a track DB and a wireless communication technology is applied, even if a train enters a wrong course due to an error of an interlocking device or a track changer, It can be detected immediately to prevent accidents such as train crashes.

Claims (9)

It consists of a plurality of eddy current sensors for measuring the response signal of the line when the train moves in the branch section of the track, and data processing means for collecting the response signal detected by the eddy current sensors to determine the direction of the branch of the train. Branch detection system for trains. The method of claim 1, The eddy current sensors maintain a predetermined interval and are arranged in a line to constitute an eddy current sensor module, and the eddy current sensor module is provided at a lower portion of the train in a direction orthogonal to a traveling direction of the train. system. The method of claim 1, wherein the eddy current sensors detect the line and output the response signal to the data processing means to compare the detection sequence of the eddy current sensors according to time to determine whether the train has branched to the left or right. A track branch detection system for a train. The apparatus of claim 1, wherein the data processing means comprises: The controller is configured to determine whether the train is branched by using the response signal detected by the eddy current sensors, a memory unit in which a monitoring program is embedded, a clock generator for generating a clock for driving the controller, and a power supply unit. The track branch detection system of a train, characterized in that. The method of claim 4, wherein And the data processing means further comprises an interface unit for transmitting branch information to the on-vehicle controller of the train when the controller determines whether the train is branched or not. The method of claim 4, wherein The data processing means further includes a data input processing unit for converting an analog signal type received from the eddy current sensors into a digital signal and inputting it to a controller. The method of claim 6, And the data input processing unit comprises an A / D converter. A first step of detecting a response signal from a plurality of eddy current sensors provided at a lower portion of the train in a direction orthogonal to a traveling direction of the train when the train moves a branch section; A second step of converting a response signal in the form of an analog signal received from the eddy current sensor into a digital signal; And A third step of determining whether the train has branched to the left or the right by comparing the detection sequence of the eddy current sensor according to time when the response signals converted into the digital signal are input; Way. The method of claim 8, A fourth step of generating branch information and transmitting the branch information to the on-vehicle controller of the train when it is determined that the train is branching to the left or the right side of the branch section of the track after the third step. Branch detection method.

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