KR101550239B1 - Method and apparatus for controlling train based on single light LED(light emitting diode) signal transmitter having three different lights - Google Patents

Abstract

Discloses a train control method and apparatus using a three-phase LED signaling device of a single type. The operation of the light emitting diode (LED) signal of the short-circuit type 3 is established by setting the first short-circuit type LED signal to the stop signal according to the trajectory section of the train, the first short- , The second shorted tri-state LED signal may be set to have an attention signal, and the third shorted tri-state LED signal may be set to have a progress signal, And one LED may be represented by one of a green signal, a yellow signal, and a red signal, a green signal may be a progress signal, a yellow signal may be a caution signal, and a red signal may be a stop signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for controlling a train using a three-

The present invention relates to a train control method, and more particularly, to a method and apparatus for controlling the operation of a vehicle based on an LED signal.

Since the opening of Gyeongin Line in 1899, many railway lines have been operating on the Gyeongbu Line, Honam Line, Janghang Line, Chungbuk Line and the Seoul Metropolitan Area. There have been many technological improvements and service improvements in railway lines as well as quantitative expansion, and still continue. In order to improve the railway system technically and improve the service, various aspects such as the operation of the railway, technical matters, economics, costs and benefits should be examined in various ways. For example, many aspects can be considered to implement a railway signaling system, which is one of the most important aspects of safety in railway systems. It is important that the railway signal system is implemented clearly and error free because it has a large ripple effect on system operation from the aspect of system function implementation.

Signaling systems are closely related to operation and are safety-based systems. The signaling system can be implemented on the basis of the purpose of being safe, accurate, and fast. Therefore, the signaling system requires a high degree of safety and reliability. That is, in any case, the train should not be accidentally caused by a fault in the signal system and should be operated in a stable manner. In addition, the entire system must be configured to operate in a fail-safe manner. In addition, there is a need to reduce the cost of maintenance of the signaling system.

A first object of the present invention is to provide a train control method using a three-phase LED signaling device of a monopole type.

A second object of the present invention is to provide a mono-type 3-state LED signaling device for train control.

According to an aspect of the present invention, there is provided a light emitting diode (LED) signaling device comprising: a light emitting diode (LED) Signal, the second shorted three-phase LED signal is a caution signal, and the third three-phase three-phase LED signal is a progress signal when the first shorted three-phase LED signal is changed to the stop signal. Wherein the LEDs are implemented as one LED and the one LED is represented by one of a green signal, a yellow signal, and a red signal, and the green signal The yellow signal may be the attention signal, and the red signal may be the stop signal. The operation of the mono type 3-state LED signaling device may further include a step of judging whether an error occurs in the mono type three-phase signaling device or whether the mono type three-phase signaling device does not emit light, The determination as to whether an error has occurred or whether the monotone type three-phase signaling device does not emit light can be performed based on information on the travel distance of the train. The operation of the mono-type 3-state LED signaling apparatus further includes a step of requesting the position information of the preceding train which precedes the train when the mono-type 3-state signaling apparatus fails or the mono-type 3-state signaling apparatus does not emit light . Wherein the LED signal controller is configured to transmit the change signal information to the LED signal controller, wherein the LED signal controller receives the change signal information and the LED signal The control unit may compare the predicted signal information with the predicted signal information to determine whether or not an error has occurred in the three-phase LED signal unit of the forklift type, and transmit the correction signal such as an LED to the three-phase LED signal unit , The prediction signal information may be a signal of the LED light signal of the forklift 3-state predicted on the basis of the position information of the preceding train proceeding ahead of the train. The operation of the mono type three-phase LED signaling device is such that at least one of the first three-phase LED signaling device of the short-range type, the three-phase LED signaling device of the second short- Modifying the signal displayed on the at least one monotone type three-phase signaling device based on the correction signal such as the LED when the correction signal is received. Wherein the operation of the mono type three-phase LED signaling device is such that at least one of the first three-phase LED signaling device of the short-range type, the three-phase LED signaling device of the second three-phase type and the three- Changing a signal displayed on the at least one mono type three-phase signaling device based on the change signal, such as the default LED, when the change signal is received, wherein the change signal, such as the default LED, If the speed of the train is less than a threshold value based on the speed, it may be a signal for changing the signal system to operate with a different signal system than the pre-set default signal system for the three-state LED signaling apparatus.

According to an aspect of the present invention, there is provided a light emitting diode (LED) signal system of a three-prong type, wherein the LED system comprises a processor, When the first short type 3-state LED signal is set to the stop signal and the first short type 3-state LED signal is changed to the stop signal according to the movement of the first short type 3-state LED signal, , And a third tri-state tri-state LED signal may be configured to have a progress signal, wherein the tri-state tri-state LED signal is implemented based on one LED and the one LED is a green signal, The green signal may be a progress signal, the yellow signal may be the attention signal, and the red signal may be the stop signal. The processor may be configured to determine whether an error has occurred in the shorted three-state signaling device or if the shorted three-state signaling device is not emitting light, and if the error occurs in the three- The determination as to whether the signaling device is not emitting can be performed based on information on the travel distance of the train. The processor may be further configured to request the location information of the preceding train which precedes the train if an error occurs in the mono-type 3-state signaling device or when the mono-type 3-state signaling device does not emit light. Wherein the LED signal controller is configured to transmit the change signal information to the LED signal controller, wherein the LED signal controller receives the change signal information and the LED signal The control unit may compare the predicted signal information with the predicted signal information to determine whether or not an error has occurred in the three-phase LED signal unit of the forklift type, and transmit the correction signal such as an LED to the three-phase LED signal unit , The prediction signal information may be a signal of the LED light signal of the forklift 3-state predicted on the basis of the position information of the preceding train proceeding ahead of the train. The processor may be configured such that when at least one of the first, second, third, and third third-state LED indicators, the third LED indicator, the third LED indicator, and the third LED indicator, , And to change the signal displayed on the at least one mono type three-phase signaling device based on the correction signal such as the LED. Wherein the processor is configured to receive a default signal change signal from at least one of the first three-phase LED indicator, the second three-phase LED indicator, and the third three-phase LED indicator, , The default LED, and the like, the change signal may be configured to change the signal displayed on the at least one mono type three-phase signaling device, wherein the change signal, such as the default LED, is based on the speed of the train, Threshold signal, it may be a signal for changing the signal system to operate with a different signal system than the pre-set default signaling system for the monotone three-state LED signaling apparatus.

As described above, by using the train control method and apparatus using the LED light source of a monolithic type according to the embodiment of the present invention, since the LED light source of the three-phase LED for railway uses one LED or the like as compared with the existing three- Can be reduced by 1/3 to reduce the weight and area used for the signaling device, thereby reducing the cost of constructing the signaling device and the maintenance cost of the signaling device. In addition, it is possible to improve the visibility of the engineer's signal by improving the problem of the engineer's mistake due to the interference caused by the proximity of the existing three-LED signaler.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram illustrating a light emitting diode (LED)
FIG. 2 is a conceptual diagram illustrating a single-type three-state LED signaler installed in a line according to an embodiment of the present invention.
Figure 3 discloses the operation of a train when a short three-state LED signaling device fails in accordance with an embodiment of the present invention.
FIG. 4 is a conceptual diagram illustrating a method of controlling a three-phase LED signaling device according to an embodiment of the present invention.
FIG. 5 is a conceptual diagram illustrating a method of analyzing a signal generated from a short-range three-state LED signaler in a train according to an exemplary embodiment of the present invention.
FIG. 6 is a conceptual diagram illustrating a method of operating a signal system differently according to a travel route of a train according to an embodiment of the present invention.
7 is a conceptual diagram illustrating a signal controller according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same reference numerals will be used for the same constituent elements in the drawings, and redundant explanations for the same constituent elements will be omitted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram illustrating a light emitting diode (LED)

Referring to FIG. 1, a mono type three-state LED signaling device can be implemented based on one LED or the like. One LED or the like included in the three-state LED signal of the short-circuit type can be emitted by three different colors of light. When the LED is green (100), it indicates the progress of the train. When the LED is yellow (120), it indicates the attention of the train. When the LED is red (140) can do.

The three-LED LED indicator can change the color based on the position information of the train. The preceding train position information for changing the signal information displayed in the monotone 3-state LED signal can be obtained based on the track circuit. As described later, when the track circuit is short-circuited by the wheels of the train on which the track circuit is running, the three-state LED signal generator of the forklift type can display a red stop signal (R) 140. When a single three-state LED indicator is displayed in red (140), the LEDs of other signals located in the path of excessive trains due to the relays are sequentially connected to the yellow (120) (G-appearing) signal of the mobile terminal 100. [ For example, it can be assumed that a three-state LED signal of a short-circuit type is implemented on a line side at intervals of 200 m. In this case, the shorted 3 local LED signal present at the previous 200 m based on the shorted three-state LED signal with red (140) stop signal (R) is yellow (120) , And the short-circuit type 3 local LED signal present at the previous 400m can be displayed as a green (100) caution signal (G-present). By using this method, trains following the preceding train can obtain information about whether there is a preceding train in front of 200m ahead and 400m ahead of the preceding train.

FIG. 2 is a conceptual diagram illustrating a single-type three-state LED signaler installed in a line according to an embodiment of the present invention.

FIG. 2 illustrates the operation of the first short three-phase LED signal 200, the second short three-phase LED signal 220, and the third short three-phase LED signal 240 according to the position of the train. Assuming that the mono-type 3-state LED signaler installed on the line has a certain interval of the signaler, the second mono-type 3-state LED signaler 220 is arranged to be spaced apart from the signal line interval of the first short- It can be a signal located in the place. The third shorted three-state LED signal 240 may be a signal located at a distance from the second shorted three-state LED signal 220 by a signal interval.

Referring to FIG. 2, when a train enters a specific position based on the position of the first short type three-state LED signal device 200, the axle of the train may short-circuit the track circuit formed by the line and the closed loop. When the track circuit is short-circuited, the first short-circuit type three-state LED signal generator 200 may be displayed as a stop signal (red signal).

In the case where the first short-circuit type three-state LED signal generator 200 is indicated by a red color signal, the second short-circuit type three-phase LED signal generator 220, which is positioned before the traveling direction of the train sequentially by relay interlocking, Signal). Also, the third short three-state LED signal 240 located before the second short three-state LED signal 220 may be indicated by a progress signal (green signal).

Figure 3 discloses the operation of a train when a short three-state LED signaling device fails in accordance with an embodiment of the present invention.

FIG. 3 illustrates a method of controlling a train through additional determination when a three-state LED signaling device fails. If a three-position LED signal fails, information on the position of the preceding train can not be provided through the three-phase LED signaling device, so the train can use additional methods to determine the position of the preceding train. You need to do it.

First, it is assumed that the first short-circuit type three-state LED signal generator 310 to the third short-circuit type LED signal generator 330 are implemented in a line, and the second short-circuit type three-state LED signal generator 320 fails have. The failure of the three-state LED signal of the short-circuit type can be detected by judging whether or not the short-circuit type three-state LED signal is emitted through the light sensor implemented in the three-state LED signal of the short-circuit type.

In this case, there is a possibility that the train will see the stop signal through the third short-circuit type three-state LED signal 330 without seeing the caution signal of the second short-circuit type three-state LED signal 320. In this case, there is a risk of an accident because it may not be able to keep the gap with the preceding train.

In order to prevent such a case, it is determined that a signal generated in the second short-circuit type three-state LED signal generator 320 is not sensed at the current position based on the position sensor or the speed sensor implemented in the train, and the second short- 0.0 > 320 < / RTI >

For example, assuming that the first train 360 is fixed and the second train 370 moves along the first train 360 when the second short-type three-state LED signal 320 is broken, can do.

In this case, the second train 370 may preferentially acquire the progress signal and perform the progress in the first short type 3-state LED signal 310. The second train 370 can predict that there is a second shorted tri-state LED signal 320 after a signal interval of 200 m after acquiring a signal from the first shorted tri-state LED signal 310 . If the second short three-state LED signal 320 fails, the second train 370 can not obtain a signal from the second short three-state LED signal 320 at that location. When the second train 370 fails to acquire a signal from the second short three-state LED signal 320 after 200 m after acquiring the signal from the first short three-phase LED signal 310, the second short 3 It can be determined that an abnormality has occurred in the present LED signal generator 320.

In this case, the second train 370 may predict or obtain information about the signal of the second short three-state LED signal 320 in a variety of ways. First, the second train 370 receives information indicating that a signal has not been acquired from the second short-circuit type three-state LED signal 320 when the LED signal controller is in charge of managing the LED signal of the short-circuit type three- And may request information about the location of the train 360. In this case, the LED signal controller may transmit information on the position of the first train 360 preceding the second train 370 to the second train 370. Alternatively, the second train 370 may request the information of the position of the first train 360 to the first train 360 to obtain the position information of the first train 360. [

Even if the train passes by another fault, the trajectory circuit is not short-circuited, so that there may be a case where the signal of the LED signal of the three-state short-circuit type is not changed by the relay interlocking. Even in this case, you can control the LED light signal of the tri-state 3-state so that the train does not mistake the signal.

FIG. 4 is a conceptual diagram illustrating a method of controlling a three-phase LED signaling device according to an embodiment of the present invention.

Referring to FIG. 4, the signal controller 400 determines whether a signal generated from the LED signal 450 of the mono-type three-signal LED 450 is a correct signal based on the signal of the mono-type 3-state LED signal 450 and the position of the train And a method for judging whether or not the user is satisfied.

The signal controller 400 determines whether or not there is an error in the mono-type 3-state LED signal 450 based on the position information of the train and the information about the signal generated in the mono-type 3-state LED signal 450 can do.

The signal controller 400 can predict a signal generated from the LED signal 450 of the mono-type 3-state display on the line based on the position of the train moving on the present line. The signal of the monotone type 3-state LED signal 450 predicted by the signal controller 400 is defined as the predicted monotone type 3-state LED signal 420. The signal controller 400 determines whether the signal information 410 currently generated in the LED indicator 450 of the LED indicator 300 is different from the LED indicators 420 of the predictive LED indicator 3 and the current LED indicator 430 ) Has not malfunctioned.

For example, if the first train passes the track circuit, the signal of the mono-tri-state LED signal 450 is changed to a stop signal. When the signal is changed, the mono 3-state LED signal may transmit information 410 about the mono 3-state LED signal changed to the signal controller 400. The signal controller 400 compares the information 410 about the signal transmitted by the LED indicator 450 of the mono-type 3-state to the predicted mono-type 3-state LED signal 420 to determine whether the two signals are different from each other, It is possible to determine whether or not an error exists in the monotone type 3-state LED signal 410. If there is no error in the signal changed by the mono-type 3-state LED signal 450, it is possible to transmit a response signal indicating that the signal changed by the mono 3-state LED signal 450 is the correct signal.

Conversely, if there is an error in the signal modified by the mono-tri-state LED signal 450, the signal controller 400 will undergo further verification as to whether the predicted mono-tri-state LED signal 420 is correct, It is possible to transmit a correction request signal 430 such as an LED requesting to change the signal of the LED light source 450 of the mono-type 3-state based on the predicted mono-type 3-state LED signal 420 to the mono-type 3-state LED signaler. The LED light signal 450 of the mono type 3-state receiving the correction request signal 430 such as the LED can change the signal of the mono-type 3-state LED signal 450 based on the received signal.

In addition, the signaling unit control unit 400 may transmit information indicating that the signal system of the current three-state LED signaling unit 450 may be erroneous to a train running on the railway line so that the train can be safely operated have. For example, a train that received information indicating that the signal scheme of the present mono-tri-state LED signal 450 may be in error may be transmitted to the train through an additional preceding train sensing device (e.g., radar) Information about the distance can be obtained and additional information about the position of the preceding train can be obtained.

By using this method, it is possible to prevent accidents between trains due to signal errors.

FIG. 5 is a conceptual diagram illustrating a method of analyzing a signal generated from a short-range three-state LED signaler in a train according to an exemplary embodiment of the present invention.

FIG. 5 illustrates a method for transmitting information on a signal generated in a short-circuit type three-state LED signaling device to a vehicle operator when the operator who operates the train does not see a signal generated from the LED signal device of the short-circuit type three-state display. This method may be performed only when the operator does not see the signal, but the operator may be used to judge again whether or not the signal is certain. In this case, the continuous image analysis can analyze the information of the signal of the LED light signal of the three-way LED signal which the passenger has passed before and can transmit the signal to the train operator through the display.

Referring to FIG. 5, a method for analyzing signals generated in a three-phase LED signaling device using a three-dimensional image sensor mounted on a train is described.

For example, the image information analyzing unit 500 can determine whether the signal generated from the LED signal generator of the three-phase three-state display is a signal based on the image information captured by the image capturing device provided in the train.

For example, the image information analyzing unit 500 acquires image information of a portion where a three-state LED signal generator is installed, and a pixel corresponding to a signal portion generated by a three-state LED signal generator of a three- It is possible to judge whether or not it is a signal having any pixel value.

The information on the current pixel can be displayed on the monitor that the operator can view based on the screen information analyzed by the image information analyzing unit 500. [

FIG. 6 is a conceptual diagram illustrating a method of operating a signal system differently according to a travel route of a train according to an embodiment of the present invention.

FIG. 6 illustrates a method of operating a signal system in consideration of the actual train speed.

In fact, it is possible to operate the signal system by taking the actual speed of the train into consideration when operating the train. For example, an interval of 200 meters with a three-LED LED indicator on the trains running at full speed may be a fast traverse. However, if a train stops at the station and then moves to the next station, the 200m section may not be the section where the train is moving fast. Therefore, the signal indicating the deceleration of the train can be set differently considering the moving speed of each section.

It can be assumed that the first train 660 moves after a stationary movement in the reverse direction to change the signal of the first short type 3-state LED signal generator 610. In this case, the signal of the third short-circuit type three-state LED signal generator 630 located before 400m as the default value by the relay interlock is a green signal, and the signal of the second short-circuiting three-state LED signal generator 620 located 200m before is a yellow signal can be changed. However, when the first train 660 stops and travels in the opposite direction as described above, the moving time after the signal of the first three-state LED indicator 610 changes, Lt; / RTI > In this case, the signal of the third short-circuit type three-state LED signal 630 is changed to a yellow signal (caution signal) instead of a green signal, so that another train 670 traveling along the first train 660 is driven by the first train 660, It is possible to reduce the speed in advance in consideration of the movement of the motor.

In order to perform this method, if the speed of the train 660 that changed the signal 610 of the first short-circuiting 3-state LED signal at present is calculated and the calculated speed is lower than a specific threshold value, the first short- It is possible to keep the colors of the second short three-state LED signal 620 and the third short three-state LED signal 630, which are located before the first three-state LED signal 610, as yellow signals, which are caution signals. For example, when the first short type 3-state LED signal 610 is changed to a stop signal due to a train moving at a speed of 10 km / h or less by setting a speed of 10 km / h as a threshold value, the second short type 3 It is possible to control both the present LED signal 620 and the third short three-phase LED signal 630 to be changed to the caution signal. Conversely, if the first shorted tri-state LED signal 610 is changed to a stop signal due to a train traveling at a speed of more than 10 km / h, the second shorted tri-state LED signal 620 at the default value is a caution signal, The three-prism type three-state LED signal 630 can be emitted as a progress signal.

As an example of such a signal control method, it is possible to use a signal change system different from the default signal change based on relay information based on the current train position information and the train speed information.

For this additional control, a signal controller can be implemented. The signal controller can acquire information on the speed of the train, and when the signal operation other than the default value is to be performed based on the signal, the signal controller can control the signal transmitter by transmitting a separate control signal. 1 to 6 may be implemented as a single system to control the operation of a mono-type 3-state LED signal generator included in the system based on the processor.

7 is a conceptual diagram illustrating a signal controller according to an embodiment of the present invention.

7, the signal control unit includes a signal information receiving unit 700, a train position information receiving unit 710, a train speed information receiving unit 720, an error determination unit 730, a signal control unit 740, a communication unit 750, And a processor 760.

The signaling device information receiving unit 700 may be implemented to collect information about a signal generated in the current tri-state LED signaling device. Information on the short-circuiting three-state LED signal received by the signaling device information receiving unit 700 can be transmitted to the error determining unit 730, and the error determining unit 730 can receive the three- It is possible to judge the error of the signal generated from the three-state LED signal of the short-circuit type.

The train position information receiving unit 720 can receive information on the position of the current train from the train. Information on the position of the train received by the train position information receiving unit 720 can be transmitted to the error determining unit 730. [ Information about the position of the train can be used to determine the error of the signal generated in the LED triangle of three LEDs.

The train speed information receiving unit 720 can receive information on the train speed from the train. Information on the speed of the train received by the train speed information receiving unit 720 may be transmitted to the error determining unit 730. Information on the speed of the train can be used to determine the error in the signal generated in the LED triangle with three LEDs.

The error determination unit 730 receives the signal information of the signaling unit received from the signaling device information receiving unit 700, information on the position of the train received from the train position information receiving unit 710, and information on the train speed received from the train speed information receiving unit 720 Information on whether or not an error exists in the current signaling apparatus can be determined based on the information about the error.

If it is determined by the error determination unit 730 that an error has occurred, or if it is determined according to the speed of the train that the LED signal of the monotone type three-phase LED should be operated with a signal value other than the default signal value, And to generate a signal for control.

The communication unit 750 may be implemented to transmit and receive signals to a train, a mono type three-phase LED signal.

The processor 760 controls the operation of the signal information receiver 700, the train position information receiver 710, the train speed information receiver 720, the error determiner 730, the signal controller 740, and the communication unit 750 Lt; / RTI >

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

Claims (7)

CLAIMS What is claimed is: 1. A light emitting diode (LED) signaling system comprising: a processor;
Wherein the processor is configured such that the first short-circuiting three-state LED signaling device is set as a stop signal according to the trajectory movement of the train,
Wherein the second shorted tri-state LED signal is configured to be a caution signal and the third shorted tri-state LED signal to have a progress signal when the first shorted tri-state LED signal is changed to the stop signal,
Wherein the at least one tri-state LED signal is implemented based on one LED and the one LED is represented by one of a green signal, a yellow signal, and a red signal,
The green signal is a progress signal, the yellow signal is the attention signal, and the red signal is the stop signal,
And to determine whether an error occurs in the shorted three-state signaling device or whether the shorted three-state signaling device is not emitting light,
Wherein the determination as to whether an error occurs in the mono-type three-phase signaling device or the mono-type three-phase signaling device is performed is based on information on the travel distance of the train. .
delete 2. The apparatus of claim 1,
Wherein the controller is configured to additionally request location information of a preceding train that precedes the train when an error occurs in the mono-type 3-state signaling device or when the mono-type 3-state signaling device does not emit light. The method according to claim 1,
The three-state LED signal of the short-circuit type is implemented to transmit change signal information to the LED signal controller, which is information on the changed signal of the short-circuit type three-state LED signal,
The LED signal controller compares the received change signal information with the predicted signal information predicted by the LED signal controller to determine whether an error has occurred in the LED signal of the short-circuit type 3-state. If the error occurs, To the three-phase LED signaling device,
Wherein the prediction signal information is a signal of the forklift 3-state LED signal predicted based on the position information of the preceding train preceding the train. 5. The apparatus of claim 4,
When at least one of the first three-phase LED indicators for the short-circuit type, the second three-phase LED indicator for the short-circuit type and the three-phase LED signal for the third short-circuit type receives the correction signal, Wherein the at least one three-state three-state signal generator is configured to change a signal displayed on the at least one three-state three-phase signal generator based on an equal correction signal. 5. The apparatus of claim 4,
Wherein when at least one of the first shorted tri-state LED signal, the second shorted tri-state LED signal, and the third shorted tri-state LED signal of the short-circuit type three-phase signaling device receives a default signal change signal, Wherein the LED is configured to change a signal displayed on the at least one mono-type three-phase signaling device based on a change signal such as an LED. The method according to claim 6,
Wherein the change signal of the default LED or the like is used to change the signal system so as to operate with a signal system different from the default signal system set in advance for the monotone type 3-state LED signaling apparatus when the speed of the train is less than a threshold value, Signal is a three-mode LED signal system with a short-circuit.

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