KR101396570B1 - System and method for detecting isolation between railroad cars using power line communication - Google Patents

Abstract

A system and method for detecting separation between railway vehicles using power line communication are provided. A railway vehicle separation sensing apparatus using power line communication includes a separation sensing unit for receiving a separation sensing signal generated in a first vehicle and confirming a separation of the first vehicle and a second vehicle based on the received separation sensing signal, ; And an alarm generation unit for outputting a notification signal for the separation of the first vehicle and the second vehicle, wherein the separation detection unit detects the separation of the first vehicle and the second vehicle, From the first vehicle.

Description

TECHNICAL FIELD [0001] The present invention relates to a system and method for detecting separation between railway vehicles using power line communication,

The present invention relates to a system and method for detecting a separation between railway vehicles using power line communication (PLC), and more particularly, to a system and method for detecting a separation between railway vehicles by transmitting / And more particularly, to a system and method for detecting a separation between railway vehicles using power line communication.

Trains can be divided into carriages and coaches depending on the type of operation. Among them, a large number of wagons are often long and often used for transporting different kinds of cargo. Particularly, in the case of a freight vehicle that travels in a mountainous area, it often passes through a curved line with a large curvature and frequently passes through a branch line in a broken line. At this time, there is a case where the trailing vehicle is detached or the connecting device between the vehicles is disconnected. Therefore, the engineer should check from time to time whether the vehicle on the trailing end is connected safely.

Conventionally, as a method of confirming the separation of a vehicle, a method of attaching an RFID sensor to the rear of a vehicle, confirming separation through an RFID sensor, and providing separation to an engine room has been used. However, when RF is used, There was a problem that it was difficult for the engineer to immediately deal with it because it was possible to know whether or not it was separated. Further, there was a problem that it was difficult to effectively detect that the following train approached the vehicle separated from the preceding train on the front side.

Some embodiments of the present invention provide a railway vehicle separation detection system and method using power line communication, which can detect the separation of a train using power line communication through a railway.

In addition, an embodiment of the present invention can be applied to various types of trains, and can detect separation between railway vehicles without structural modification or destruction of existing vehicles, ≪ / RTI >

According to a first aspect of the present invention, there is provided a vehicular drive system for a vehicle, comprising: a control unit for receiving a separation detection signal generated in a first vehicle, A separation sensing unit for confirming the separation of the sensor; And an alarm generation unit for outputting a notification signal for the separation of the first vehicle and the second vehicle, wherein the separation detection unit detects the separation of the first vehicle and the second vehicle, And the second vehicle is received from the first vehicle through the power line communication.

In addition, the separation sensing signal may be modulated into a power line communication signal by a PLC (Power line communication) communication device of the first vehicle.

In addition, the separation detection signal may be provided to the wheel of the first vehicle through at least one of the vehicle body, the axle, and the bogie of the first vehicle.

In addition, the PLC communication device of the first vehicle may include a PLC modem and a PLC signal combiner.

The PLC signal combiner may be a non-contact PLC signal combiner.

In addition, the PLC modem may further include a PLC repeater for amplifying the sensing signal.

The separation sensing apparatus may further include a display unit for receiving an image of the connection state of the first vehicle and the second vehicle taken from the image sensing apparatus of the first vehicle and displaying the received image .

In addition, the display unit may display the received image when the notification signal is output.

Also, the alarm generator may provide the notification signal to the vehicle of the following train through the line, and the notification signal provided to the vehicle of the next train may be modulated into the power line communication signal by the PLC communication device of the first vehicle .

Also, the separation sensing signal may include information on a time at which the separation sensing signal was generated, and the separation sensing unit may be configured to detect the separation sensing signal based on the time at which the separation sensing signal was received and the time at which the separation sensing signal was generated. It is possible to determine the separation of the first vehicle.

According to a second aspect of the present invention, there is provided a method for controlling a vehicle, comprising: receiving a separation detection signal generated in a first vehicle; Calculating a distance between the first vehicle and the second vehicle based on the received separation sensing signal; Determining whether the first vehicle and the second vehicle are separated based on the calculated distance; And outputting a notification signal for the separation of the first vehicle and the second vehicle, wherein the step of receiving the separation detection signal includes the steps of: And the first detection signal is received from the first vehicle.

In addition, the step of receiving the separation sensing signal may receive a separation sensing signal modulated with a power line communication signal by the PLC (Power line communication) communication device of the first vehicle.

In addition, the separation detection signal may be provided to the wheel of the first vehicle through at least one of the vehicle body, the axle, and the bogie of the first vehicle.

In addition, the PLC communication device of the first vehicle may include a PLC modem and a PLC signal combiner.

The PLC signal combiner may be a non-contact PLC signal combiner.

In addition, the PLC modem may include a PLC repeater for amplifying the sensing signal.

The method further includes the steps of: receiving an image of the connection state of the first vehicle and the second vehicle photographed from the photographing device of the first vehicle; And displaying the received image when the notification signal is output.

The generating of the notification signal may modulate the notification signal into a power line communication signal and provide the modulated notification signal to the vehicle of the following train through the line.

The separation sensing signal may include information on a time at which the separation sensing signal was generated, and the calculating the distance may include calculating a distance based on a time at which the separation sensing signal was received and a time at which the separation sensing signal was generated The distance between the first vehicle and the second vehicle can be calculated.

According to a third aspect of the present invention, there is also provided a method of detecting a vehicle, comprising the steps of: generating a separation sensing signal used for determining a separation of a vehicle from a signal generating device; And providing the signal generator to another vehicle neighboring the vehicle through a PLC communication device in the vehicle, wherein the separation sensing signal includes a time at which the separation sensing signal is generated and a time at which the separation sensing signal is generated And the separation detection signal is transmitted to the other vehicle through the line of the railway, the method may further include the step of: .

According to the above-described object of the present invention, PLC (Power line communication) communication can be performed using a vehicle body, a wheel, an axle, a bogie and a railway of a railway vehicle as an intermediary, and a separate medium (for example, It is possible to efficiently detect the separation between the railway cars without adding the line.

In addition, according to the above-described object of the present invention, since data transmission for detection of detachment is not dependent on an additional vehicle, the vehicle can be applied to various types of vehicles. Further, Separation can be detected.

1 is an overall schematic diagram of a system for detecting a separation between railway vehicles using power line communication according to an embodiment of the present invention.
2 is a detailed configuration diagram of a signal generating apparatus 100 according to an embodiment of the present invention.
3 is a detailed configuration diagram of a PLC communication device 200 according to an embodiment of the present invention.
4 is a detailed configuration diagram of a PLC communication apparatus 300 according to an embodiment of the present invention.
5 is a detailed configuration diagram of a separation sensing apparatus 400 according to an embodiment of the present invention.
6 is a detailed flowchart of a method of detecting a separation between railway vehicles using power line communication according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall schematic diagram of a system for detecting a separation between railway vehicles using power line communication according to an embodiment of the present invention.

1, a railway vehicle separation detection system using power line communication according to an embodiment of the present invention includes a first vehicle 1000, a second vehicle 2000, a signal generator 100, a PLC (Power line communication) communication devices 200 and 300, a separation sensing device 400, and a line 4000.

The signal generator 100 located in the first vehicle 1000 generates a sensing signal used for sensing the separation of the vehicle and outputs the generated sensing signal to the first vehicle 1000 through the PLC communication device 200 of the first vehicle 1000 2 vehicle (2000). In this case, the generated sensing signal may be modulated into a power line communication signal by the PLC communication device 200, and the modulated sensing signal may be provided to the PLC communication device 300 of the second vehicle through the railway line 4000 .

Further, the sensing signal provided to the PLC communication device 300 may be demodulated by the PLC communication device 300, and the demodulated sensing signal may be provided to the separation sensing device 400. [ The separation sensing apparatus 400 may analyze the received sensing signal to determine whether the first vehicle 1000 and the second vehicle 2000 are separated or not and that the first vehicle 1000 and the second vehicle 2000 If it is separated, it can generate a notification signal.

On the other hand, the PLC communication apparatus 200 can provide a sensing signal to the line 4000 through at least one of the vehicle body, the axle, the bogie and the wheel of the first vehicle 1000, The bogie and the wheel may be formed as conductors. The material of the vehicle body, the axle, the bogie, and the line 4000 may include iron, which is a conductive metal. During operation of the vehicle, the vehicle body, the axle, the bogie and the line 4000 are firmly adhered Can be maintained. In addition, the line 4000 may be used not only as a track circuit constituting a railway signal system, but also may be supplied with electric power from a catenary line (not shown) to the vehicle.

The line 4000 may extend over the entire length of the railway on which the vehicle is operated, may be formed of a pair of roads, and may be formed of a single line or a double line. When the line 4000 is formed of a double line, a data transmission scheme such as a frequency division scheme and a time division scheme may be used together. In this case, the frequency division type signal may be transmitted through one line and the time division type signal may be transmitted through the other line.

The line (4000) can be installed on a wooden sleeper or a concrete sleeper, and can be used not only as a data transmission / reception medium for the PLC, but also as a ground circuit for an occlusion signal and a ground line of a vehicle. A PLC repeater for amplifying the weakened communication signal may be connected to the line 4000, but is not limited thereto.

Hereinafter, a signal generating apparatus 100 according to an embodiment of the present invention will be described with reference to FIG.

2 is a detailed configuration diagram of a signal generating apparatus 100 according to an embodiment of the present invention.

As shown in FIG. 2, the signal generating apparatus 100 according to an embodiment of the present invention includes a sensing signal generating unit 110 and an image capturing unit 120.

The detection signal generating unit 110 generates a detection signal used for detecting the separation of the train. The detection signal generating unit 110 may generate a detection signal including the identification value of the train and the detection signal generation time, and may further generate various types of detection signals, but the present invention is not limited thereto.

For example, as shown in Table 1, the detection signal generating unit 110 may generate a STX value of 2 Bytes, an ID value of 4 Bytes, a STU value of 2 Bytes, a Stand Time value of 10 Bytes, a Start Time value of 10 Bytes And an ETC value of 2 Bytes.

STX ID STU Stand Time Start Time ETC 2Byte 4Byte 2Byte 10 bytes 10 bytes 2Byte

In addition, the sensing signal generator 110 may periodically generate a sensing signal. The detection signal generating unit 110 may generate a detection signal at a period of, for example, 10 ^-9 seconds, but is not limited thereto.

Also, the sensing signal generator 110 may continuously generate a sensing signal. In this case, it is possible to periodically confirm reception of the detection signal in the separation sensing apparatus 400 described later. For example, the separation sensing apparatus 400 can confirm reception of the sensing signal at a period of 10 ^-9 seconds.

The data signal generated by the sensing signal generator 110 is provided to the PLC communication device 200.

The image capturing unit 120 captures the connection state of the first vehicle 1000 and the second vehicle 2000 and provides the captured image signal to the PLC communication device 200. [ The image capturing unit 120 may photograph a portion where the first vehicle 1000 and the second vehicle 2000 are connected to each other.

Hereinafter, a PLC communication apparatus 200 according to an embodiment of the present invention will be described with reference to FIG.

3 is a detailed configuration diagram of a PLC communication device 200 according to an embodiment of the present invention.

3, a PLC communication apparatus 200 according to an exemplary embodiment of the present invention includes a data transmission / reception unit 210, a PLC modem 220, and a PLC signal combiner 230.

The data transmitting and receiving unit 210 receives the sensing signal generated by the signal generating device 100 and provides the received sensing signal to the PLC modem 220 to be described later. The data transmission / reception unit 210 may receive a detection signal generated in the signal generator 100 located inside the first vehicle 1000.

The data transmitting and receiving unit 210 may receive the sensing signal encoded in a form corresponding to the PLC communication protocol and provide the received sensing signal to the PLC modem 220, but the present invention is not limited thereto. The data transmission / reception unit 210 may encode the received sensing signal in a format corresponding to the PLC communication protocol and transmit the encoded sensing signal to the PLC modem 220. Also, the data transmission / reception unit 210 may provide the received sensing signal to the PLC modem 220 without encoding.

The PLC modem 220 modulates the sensing signal received from the data transmitting and receiving unit 210 into a power line communication signal and provides the modulated sensing signal to the PLC signal combiner 230. When the received signal is an analog signal, the PLC modem 220 can modulate the analog signal into a digital signal. For example, the PLC modem 220 adds a high-frequency signal to the 60-Hz signal using the FSK method, )can do. Also, when the received signal is a digital signal, the PLC modem 220 can modulate the signal with a frequency suitable for power line communication.

In addition, the PLC modem 220 may include a PLC repeater and may amplify the communication signal using a PLC repeater.

The PLC signal combiner 230 provides the modulated sense signal received from the PLC modem 220 to the PLC signal combiner 330 of the second vehicle 2000 through the line 4000. The PLC signal combiner 230 may provide the modulated sense signal received from the PLC modem 220 to the wheel through at least one of the vehicle body, the axle and the bogie of the first vehicle 1000, for example.

The PLC signal combiner 230 may be a non-contact type PLC signal combiner. In this case, the PLC signal combiner 230 is connected to the vehicle body inside the first vehicle 1000 according to the concept of the non- It can be installed anywhere in a metal body (for example, in the form of a pipe). For example, a steel wire for the PLC may be connected to the wheel or axle of the first vehicle 1000, and a steel wire connected to the wheel or axle may be connected to the PLC signal combiner 230.

Also, the video signal generated in the signal generator 100 may be provided to the PLC signal combiner 330 of the second vehicle through the PLC communication device 200 in the same manner as described above.

Hereinafter, a PLC communication apparatus 300 according to an embodiment of the present invention will be described with reference to FIG.

4 is a detailed configuration diagram of a PLC communication apparatus 300 according to an embodiment of the present invention.

4, a PLC communication apparatus 300 according to an exemplary embodiment of the present invention includes a data transmission / reception unit 310, a PLC modem 320, and a PLC signal combiner 330. As shown in FIG.

The PLC signal combiner 330 may receive the sensing signal provided from the PLC signal combiner 230 of the second vehicle 2000 and may provide the received sensing signal to the PLC modem 320. In this case, the PLC signal combiner 330 can extract the PLC communication signal from the signal transmitted from the second vehicle 2000 through the line, the wheel and the axle.

The PLC modem 320 can receive the sensing signal provided from the first vehicle 1000 from the PLC signal combiner 330 and demodulate the received signal. The PLC modem 320 can demodulate the received sensing signal into a signal that can be used by the separation sensing apparatus 400.

The data transmission / reception unit 310 receives the demodulated sensing signal from the PLC modem 320 and provides the received data to the separation sensing apparatus 400.

Also, a video signal received from the PLC communication device 200 may be provided to the separation sensing device 400 in the same manner as described above.

Although the PLC communication device 200 and the PLC communication device 300 have been separately described above, the present invention is not limited thereto. The PLC communication device 200 and the PLC communication device 300 may be the same device and installed in the first vehicle 1000 and the second vehicle 2000, respectively. In this case, the PLC communication device installed in the first vehicle 1000 performs the function of the PLC communication device 200 described above with reference to FIG. 3, and the PLC communication device installed in the second vehicle 2000 performs the PLC communication And can perform the functions of the device 300. [

Hereinafter, a separation sensing apparatus 400 according to an embodiment of the present invention will be described with reference to FIG.

5 is a detailed configuration diagram of a separation sensing apparatus 400 according to an embodiment of the present invention.

5, the separation sensing apparatus 400 according to an embodiment of the present invention includes a vehicle separation sensing unit 410, a display unit 420, and an alarm generation unit 430. [

The vehicle separation sensing unit 410 senses the separation of the first vehicle 1000 and the second vehicle 2000 based on the received sensing signal. The vehicle separation detecting unit 410 can measure the time when the detection signal is received and confirm the separation of the first vehicle 1000 and the second vehicle 2000 using the reception time of the detection signal.

For example, the received sensing signal may include information about the time at which the sensing signal was transmitted, and the time T required for the sensing signal to be transmitted may be calculated as shown in Equation 1 below.

<Formula 1>

T = t ₂ - t ₁

(T: time of the detected signal transmission, t _2: the receiving of the detection signal the time, t _1: the detection signal sent time)

Further, for example, the distance D between the first vehicle 1000 and the second vehicle 2000 can be calculated by the following equation (2).

<Formula 2>

D = T * v

(D: distance between trains, v: moving speed of sensing signal)

Also, the vehicle separation sensing unit 410 can compare the calculated distance value with the distance value between the first vehicle 1000 and the second vehicle 2000, thereby confirming whether or not the vehicle is separated.

In addition, the vehicle separation detecting unit 410 may set various time periods for confirming whether or not the vehicle is separated. For example, a watchdog time for detecting the vehicle separation may be set to 10 ^-9 seconds. In this case, for example, if the moving speed of the sensing signal is 3 x 10 ⁸ m / s, it is possible to confirm whether or not the train is detached in units of 30 cm.

The display unit 420 displays the received video signal. The display unit 420 displays an image of the connection portion of the first vehicle 1000 and the second vehicle 2000 when the first vehicle 1000 and the second vehicle 2000 are separated, It is possible to effectively utilize the separation of the train. In addition, the display unit 420 may display an image of the connection portion of the first vehicle 1000 and the second vehicle 2000 when a notification signal is generated in the alarm generating unit 430, which will be described later.

The alarm generating unit 430 generates an alarm notifying whether or not the first vehicle 1000 and the second vehicle 2000 are separated when the first vehicle 1000 and the second vehicle 2000 are separated. The alarm generator () can notify the other vehicle in the train, as well as provide a notification signal to the vehicle of the next train. In this case, the notification signal can be provided to the other vehicle through the line 4000 after being modulated into the power line communication signal by the PLC communication device 300, and the notification can be provided to the other vehicle through the PLC communication device and the PLC modem It can receive and demodulate the signal.

Hereinafter, a method of detecting a separation between railway vehicles using power line communication according to an embodiment of the present invention will be described with reference to FIG.

6 is a detailed flowchart of a method of detecting a separation between railway vehicles using power line communication according to an embodiment of the present invention.

In step S600, the first vehicle 1000 generates a detection signal. In step S600, the first vehicle 1000 may generate a sensing signal used to sense the separation of the train. The first vehicle 1000 may generate a sensing signal including the identification value of the train and the sensing signal generation time, and may further generate various types of sensing signals, but the present invention is not limited thereto.

For example, the first vehicle 1000 can acquire the STX value of 2 Bytes, the ID value of 4 Bytes, the STU value of 2 Bytes, the Stand Time value of 10 Bytes, the Start Time value of 10 Bytes, and the ETC value of 2 Bytes To generate the sensing signal data.

Also, the first vehicle 1000 may periodically generate a detection signal. The first vehicle 1000 may, for example, generate a sense signal at a period of 10 ^-9 seconds, but is not limited thereto.

Also, the first vehicle 1000 may continuously generate a detection signal. In this case, it is possible to periodically confirm reception of the detection signal in the second vehicle 2000, which will be described later. For example, the second vehicle 2000 can confirm reception of the sensing signal at a period of 10 ^-9 seconds.

In step S602, the first vehicle 1000 provides a sensing signal to the second vehicle 2000 through the line. In step S602, the first vehicle 1000 may modulate the sensing signal into a power line communication signal and provide the modulated sensing signal to the second vehicle 2000 through the PLC signal combiner. The first vehicle 1000 can modulate an analog signal into a digital signal when the sensing signal is an analog signal. For example, the first vehicle 1000 may add a high frequency signal to a 60Hz signal using the FSK method, )can do. Further, when the received signal is a digital signal, the first vehicle 1000 can modulate the signal with a frequency suitable for power line communication. Also, the first vehicle 1000 can amplify the communication signal using the PLC repeater.

In step S602, the first vehicle 1000 may provide a sensing signal to the second vehicle 2000 through the line 4000. [ The PLC signal combiner of the first vehicle 1000 may provide the sensing signal to the wheels of the first vehicle 1000 through at least one of the vehicle body, the axle and the bogie of the first vehicle 1000, The sensing signal provided by the wheel may be provided to the second vehicle 2000 via the line 4000. [

In step S604, the second vehicle 2000 acquires the distance from the first vehicle 1000. [ In step S604, the second vehicle 2000 can receive the sensing signal provided from the first vehicle 1000 from the PLC signal combiner 330 and demodulate the received signal. The second vehicle 2000 can measure the time at which the first vehicle 1000 receives the sensing signal and the distance between the first vehicle 1000 and the second vehicle 2000 using the reception time of the sensing signal.

The second vehicle 2000 calculates the time required for the sensing signal to be transmitted from the first vehicle 1000 and multiplies the calculated value by the moving speed of the sensing signal to thereby determine the distance between the first vehicle 1000 and the second vehicle 1000 2000) can be calculated.

In step S606, the second vehicle 2000 confirms the separation from the first vehicle 1000. [ In step S606, the second vehicle 2000 can compare the calculated distance value with a preset value, thereby confirming whether or not the vehicle is detached. Also, the second vehicle 2000 can set various time periods for confirming whether or not the vehicle is separated. For example, the watchdog time for detecting the vehicle separation can be set to 10 ^-9 seconds. In this case, for example, if the moving speed of the sensing signal is 3 x 10 ⁸ m / s, it is possible to confirm whether or not the train is detached in units of 30 cm.

In step S608, the second vehicle 2000 generates an alarm. In step S608, when the separation of the vehicle is confirmed, the second vehicle 2000 can generate a notification signal including sound, image, and the like. Also, the generated notification signal may be provided to the first vehicle 1000.

In step S610, the second vehicle 2000 provides a notification signal to the third vehicle 3000. [ In step S610, the second vehicle 2000 can provide a notification signal to the third vehicle 3000 included in the next train. In this case, the notification signal may be provided to the third vehicle 3000 through the line 4000 after being modulated into the power line communication signal by the PLC communication device of the second train. In the third vehicle 3000, It is possible to receive and demodulate the modulated notification signal through the device and the PLC modem.

One embodiment of the present invention may also be embodied in the form of a recording medium including instructions executable by a computer, such as program modules, being executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (20)

A railway vehicle separation sensing apparatus using power line communication,
A separation sensing unit for receiving a separation sensing signal generated in the first vehicle and confirming the separation of the first vehicle and the second vehicle based on the received separation sensing signal;
An alarm generating unit outputting a notification signal for separating the first vehicle and the second vehicle; And
A display unit for receiving the image of the connection state of the first vehicle and the second vehicle taken from the image pickup apparatus of the first vehicle and displaying the received image;
/ RTI &gt;
Wherein the separation sensing unit receives the separation sensing signal using power line communication and receives the separation sensing signal from the first vehicle through a line on which the first vehicle and the second vehicle travel, .
The method according to claim 1,
Wherein the separation sensing signal is modulated by a power line communication communication device of the first vehicle with a power line communication signal.
3. The method of claim 2,
Wherein the separation detection signal is provided to the wheel of the first vehicle through at least one of a vehicle body, an axle, or a bogie of the first vehicle.
3. The method of claim 2,
Wherein the PLC communication device of the first vehicle includes a PLC modem and a PLC signal combiner.
5. The method of claim 4,
Wherein the PLC signal combiner is a non-contact PLC signal combiner.
5. The method of claim 4,
Wherein the PLC modem comprises a PLC repeater for amplifying the sensing signal.
delete The method according to claim 1,
Wherein the display unit displays the received image when the notification signal is output.
The method according to claim 1,
Wherein the alarm generating unit provides the notification signal to the vehicle of the following train through the line,
Wherein the notification signal provided to the vehicle of the next train is modulated by the PLC communication device of the first vehicle with a power line communication signal.
The method according to claim 1,
The separation detection signal includes information on a time at which the separation detection signal was generated,
Wherein the separation sensing unit determines the separation of the first vehicle based on the time at which the separation sensing signal was received and the time at which the separation sensing signal was generated.
A method for detecting separation between railway vehicles using power line communication,
Receiving a separation sensing signal generated in a first vehicle;
Calculating a distance between the first vehicle and the second vehicle based on the received separation sensing signal;
Determining whether the first vehicle and the second vehicle are separated based on the calculated distance;
Outputting a notification signal for separation of the first vehicle and the second vehicle;
Receiving an image of the connection state of the first vehicle and the second vehicle photographed from the photographing apparatus of the first vehicle; And
Displaying the received image when the notification signal is output;
/ RTI &gt;
Wherein the step of receiving the separation sensing signal comprises receiving the separation sensing signal using power line communication and receiving the separation sensing signal from the first vehicle through the line on which the first vehicle and the second vehicle are running / RTI &gt;
12. The method of claim 11,
Wherein the step of receiving the separation sensing signal comprises receiving a separation sensing signal modulated with a power line communication signal by a PLC (Power line communication) communication device of the first vehicle.
13. The method of claim 12,
Wherein the separation detection signal is provided to the wheel of the first vehicle through at least one of a vehicle body, an axle, or a bogie of the first vehicle.
13. The method of claim 12,
Wherein the PLC communication device of the first vehicle includes a PLC modem and a PLC signal combiner.
15. The method of claim 14,
Wherein the PLC signal combiner is a non-contact PLC signal combiner.
15. The method of claim 14,
Wherein the PLC modem includes a PLC repeater for amplifying the sensing signal.
delete 12. The method of claim 11,
Wherein generating the announcement signal modulates the announcement signal into a power line communication signal and provides the modulated announcement signal to the vehicle of the following train through the line.
12. The method of claim 11,
The separation detection signal includes information on a time at which the separation detection signal was generated,
Wherein the step of calculating the distance calculates the distance between the first vehicle and the second vehicle based on the time at which the separation detection signal was received and the time at which the separation detection signal was generated.
delete

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