KR102211350B1 - Apparatus and Method for Fail-Proofing a Track Circuit - Google Patents

Abstract

The present invention is an apparatus for preventing failure of a track circuit including a transmitting unit, a receiving unit, and a track relay, comprising: a track detecting unit for acquiring status information on whether the transmitting unit and the receiving unit is normally operated in real time and transmitting it to a backup system; A relay control unit for acquiring real-time status information on whether the track relay is operating normally, transmitting it to a backup system, and energizing the track relay under a specific condition; A backup track circuit device comprising a backup transmission unit, a backup receiving unit, and a backup track relay, and controlled by a backup system to be used in place of the track circuit when a malfunction of the track circuit is detected; And the track detection unit, the relay control unit, and the backup track circuit device, respectively, and perform analysis and judgment on real-time status information received from the track detection unit and the relay control unit, and malfunction in the transmission unit, the reception unit, or the track relay. Is detected, a backup system that performs a measure corresponding to the malfunction, wherein the backup system detects the malfunction, a) when the output side of the receiving unit is abnormal, b) the transmission unit is malfunctioning or the receiving unit When the input side of is abnormal, or c) the track relay is broken, it is classified to respond to each malfunction, and the information on the response to the malfunction and malfunction is transmitted to the control station and an audible alarm ( Alarm) or visual alarm (indication).

Description

Apparatus and Method for Fail-Proofing a Track Circuit}

The present invention relates to a track circuit failure prevention apparatus and a failure prevention method capable of preventing the occurrence of a malfunction due to a failure of the track circuit apparatus among railway signaling facilities.

Track circuit refers to a circuit that electrically configures rails to detect the presence or absence of track occupancy of trains, etc., and track circuit devices use rails as electric circuits to detect the location of trains or other tracked vehicles. Furthermore, it is used to directly or indirectly control signal control equipment in the ground signaling system and in-vehicle signaling system by transmitting the onboard speed code.

This track circuit device is also called a blockage device, and is mainly used to prevent the entry of other trains when there is already a train in a specific section to prevent collisions and collisions between trains. In the past, a manual blocking method that directly exchanged communication between stations was used, but this method had a long control time, so there were many restrictions on the expansion of the number of train operations, and accordingly, an automatic blocking method was used to allow the train to operate more efficiently. Was developed.

The track circuit device used in the automatic closing method divides the entire rail made of conductors into a certain section, makes the divided part into an insulated section, and connects both rails with a power supply in the direction of the train traveling in this blocked section. Made with In addition, a relay is connected to the train departure circuit. The relay is a device that acts as a switch to open and close the circuit by various input signals such as the amount of current. In this case, the relay is connected to a signal that sends a progress signal to the next train. have. When there is no abnormality in the flow of rail current, the relay is excited and connects the circuit with the beacon and sends a progress signal to the next train. However, when a train passes through a closed section, a short circuit occurs as the wheels and axles of the train, through which current can flow, pass through the rails. A new circuit is created in which current flows through the train, and no current flows through the relay, causing the relay to fall and the beacon lamp to turn off, preventing the next train from entering.

Fig. 1 shows such a configuration as a drawing, and a typical track circuit is composed of a double-track track circuit as shown in Fig. 1. However, in the case of a high-speed line or subway, it is generally composed of an ATC non-insulated track circuit.

In the conventional track circuit, the transmission current (including frequency in the case of ATC) from the transmitter moves from the rail transmission end to the landing end via the field line device (transmitting side), and the line device (receiving side) to the machine room receiver When the furnace current is supplied, the receiver supplies DC power to the track relay, and the track relay is excited.

However, in such a conventional track circuit, when a transmitter, a receiver, or a track relay fails, the track circuit is dropped until physical action is taken, so that a signal (e.g., the signal lamp is turned off) is generated to prevent the next train from entering. As a result, there is a problem that interferes with the progress of the next train.

In preparation for this problem, in the case of the first stage section of the high-speed ship, the track circuit remote recovery device is installed, but there is a problem that the uneven track fall phenomenon by the receiver is often occurred, and there is still a problem of train delay in the process of taking this action. Occurs.

Conventional track circuit failure detection device or remote recovery device is registered Patent Publication No. 10-0121731 (Patent Document 1), Published Utility Model Publication No. 20-2013-0004703 (Patent Document 2), Registered Patent Publication No. 10-1023533 It is presented in the No.

Registered Patent Publication No. 10-0121731 (registered on August 29, 1997) “Track circuit failure detection device” Public Utility Model Publication No. 20-2013-0004703 (published on May 5, 2013) “Remote recovery device for track circuits of high-speed railroads” Registered Patent Publication No. 10-1023533 (2011.03.11. Announcement) "RTC's real-time remote recovery system and its control method"

The present invention is to solve the above problem, and an object of the present invention is to enable the track circuit to maintain a normal operating state even before physical maintenance measures are performed in the event of a failure of a transmission unit, a reception unit or a track relay of the track circuit. It is to provide a track circuit failure prevention device and method.

Another object of the present invention is to provide a track circuit failure prevention apparatus and method capable of preventing a train delay problem due to an irregular track drop phenomenon caused by a receiving unit of a track circuit, which is a particularly frequent failure.

Another object of the present invention is to diagnose whether a failure (abnormal track circuit fall) occurs in a track circuit device of a train track, particularly a track of a high-speed ship, by diagnosing whether it is in a state unrelated to the actual train operation or passage, and If it is determined that it is irrelevant, the train is operated normally or at least at a preset minimum speed or higher without interruption, so that the convenience of rail users such as high-speed rail, general rail, and subway can be improved.

As an aspect of the present invention for achieving the above object, the track circuit failure prevention device according to the present invention is installed to be electrically connected to the track of the train, and communicates with the transmitting unit through a transmission unit connected to a power supply and a train track. A device for preventing failure of a track circuit comprising a receiving unit and a track relay connected to the receiving unit, comprising: a track detecting unit for acquiring status information on whether the transmitting unit and the receiving unit is normally operating in real time and transmitting it to a backup system; A relay control unit for acquiring real-time status information on whether the track relay is operating normally, transmitting it to a backup system, and energizing the track relay under a specific condition; A backup track circuit device comprising a backup transmission unit, a backup receiving unit, and a backup track relay, and controlled by a backup system to be used in place of the track circuit when a malfunction of the track circuit is detected; And the track detection unit, the relay control unit, and the backup track circuit device, respectively, and perform analysis and judgment on real-time status information received from the track detection unit and the relay control unit, and malfunction in the transmission unit, the reception unit, or the track relay. Is detected, a backup system that performs a measure corresponding to the malfunction, wherein the backup system detects the malfunction, a) when the output side of the receiving unit is abnormal, b) the transmission unit is malfunctioning or the receiving unit When the input side of is abnormal, or c) the track relay is broken, it is configured to respond to malfunctions in different ways, respectively, and information on the response to the malfunction and malfunction is transmitted to the control station to be heard by the control station. Ensuring that one or more of an enemy alert (alarm) or visual alert (indication) is delivered.

At this time, the specific condition in which the relay control unit excites the track relay is a case in which the state information of the receiving unit of the track circuit is detected by the track detection unit as the input side is normal and the output side is abnormal. The relay control unit operates to excite the track relay by determining that it is an abnormal failure of the receiving unit and applying an output power corresponding to the output of the receiving unit to the track relay.

In addition, when the track detection unit detects that the transmission unit of the track circuit is defective or the input side of the receiving unit is abnormal, the backup system transfers the track circuit to the backup track circuit device to secure a normal function. Works to do.

In addition, when the relay control unit detects that the track relay among the track circuits has a failure, the backup system switches the track circuit to the backup track circuit device and operates to secure a normal function.

Meanwhile, the backup system includes at least one of the track detection unit, the relay control unit, and the backup track circuit device connected to each of the track circuits, and for the track circuits successively disposed on the train track. The relay control unit monitors whether or not the track relays fall and excitation in sequence in the moving direction, and at the same time monitor the output side of the transmitting unit and the input side of the receiving unit of the track circuit corresponding to the excited track relay. In the track circuits, when the track relays fall and excitation are sequentially performed in the traveling direction of the train, and the output side of the transmission unit and the input side of the receiving unit of the track circuit corresponding to the excited track relay are detected as normal. , It is operated to determine that the track circuit corresponding to the excited track relay is normal.

As another aspect of the present invention for achieving the above object, the method for preventing failure of a track circuit according to the present invention is installed to be electrically connected to a track of a train, a transmitting unit connected to a power supply, and the transmitting unit through a train track. A method for preventing failure of a track circuit comprising a receiving unit for communication and a track relay connected to the receiving unit, the method comprising: 1) determining whether a specific track circuit among the plurality of track circuits continuously installed along a train track has fallen; 2) monitoring whether the specific track circuit and its front and rear track circuits are sequentially dropped and excited in the train traveling direction; 3) The output side of the transmission unit and the input side of the receiving unit of the specific track circuit are monitored, and when the output side of the transmission unit and the input side of the receiving unit are normal when the track relay of the specific track circuit is energized, the specific track circuit is normal. Determining that it is; 4) a) When the specific track circuit falls from the front track circuit to the rear track circuit without sequentially falling of the track, b) the specific track circuit in the falling state is sequentially excited by the forward and forward track circuits. Determining that the specific track circuit is abnormal when it is maintained in a falling state afterwards, or c) when the excited specific track circuit first falls without falling of the excited front and front track circuits; 5) switching the specific track circuit to a backup track circuit device in case of a failure at the output side of the transmission unit or an abnormal operation at the input side of the reception unit in the specific track circuit; And 6) when the output side of the receiver in the specific track circuit is abnormal, the relay control unit determines that it is an abnormal failure and applies output power to the track relay to excite the track relay.

In this case, steps 1) to 3) may be performed only during the train operating time.

According to the track circuit failure prevention apparatus and method according to the present invention as described above, even when the transmission unit, the receiving unit or the track relay of the track circuit fails, the track circuit is maintained to operate normally until actual maintenance work is performed, There is an excellent effect of preventing delayed train operation and securing the reliability of the track circuit device.

In particular, there is an excellent effect that it is possible to more easily solve the train delay problem caused by the irregular track drop phenomenon caused by the track circuit receiver.

In addition, by fundamentally preventing the situation in which train operation is unnecessarily delayed due to a failure of the track circuit by such a device and method for preventing failure of the track circuit, the advantage of securing the on-time operation of the train and promoting and enhancing the convenience of train users. There is this.

Furthermore, there is an advantage in that cost reduction and work processing efficiency can be improved by improving the trouble-shooting process.

1 shows a conventional double-tracked track circuit.
2 is a block diagram showing a conventional track circuit device.
3 is a block diagram showing a track circuit device with a track circuit failure prevention device according to the present invention.
4 is an exemplary view illustrating the operation of the track circuit showing the division of the track circuit and the falling and excitation states of the track circuit for each divided section.
5 is a flow chart showing a method for preventing failure of a track circuit according to the present invention.

Hereinafter, an apparatus for preventing failure of a track circuit according to the present invention will be described with reference to the accompanying drawings.

1 shows a conventional double-tracked track circuit, FIG. 2 is a block diagram showing a conventional track circuit device, and FIG. 3 shows a track circuit device having a track circuit failure prevention device according to the present invention. It is a block diagram.

The track circuit to which the track circuit failure prevention device of the present invention is applied is based on a conventional double-track track circuit, and an example of such a double-track track circuit is shown in FIG. 1.

Field facilities installed on the train track 60 include a transmission-side line-side device 51 and a receiving-side line-side device 55, and a transmitter 10 and a transmitter 10 connected to the transmission-side line-side device 51. ), a power supply device 40 for supplying power, a receiver 20 connected to the receiving-side trackside device 55, and a track relay 30 operated by receiving signals from the receiver 20, a machine room ( 70) It is provided indoors.

2, the conventional track circuit device 99 includes a transmission unit 10, a receiving unit 20, and a track relay 30, and these transmitting units 10, receiving units 20 and track relays 30 A track circuit monitoring device (80, TLDS: Track Ciruit Level Detection System) is connected to, and performs transmission/reception voltage (Level), train detection, and on-board signal frequency monitoring.

The transmission unit 10 is supplied with power from the power supply device 40, and is installed to be electrically connected to the track 60 of the train, specifically the transmission-side trackside device 51. The receiving unit 20 communicates with the transmitting unit 10 through the transmitting-side trackside device 51 and the receiving-side trackside device 55 installed on the train track 60. The track relay 30 is connected to the receiving unit 20, and when an operation signal (DC power) is output from the receiving unit 20, it is excited to operate the aforementioned signal device.

In such a conventional track circuit 99, a failure of the transmission unit 10, the receiving unit 20, or the track relay 30 occurs, so that the DC power that excites the track relay 30 cannot be transmitted to the track relay or the track relay itself In the case of inoperability, the track relay 30 falls until physical maintenance measures are taken, and the signal that the preceding train is passing through the corresponding track is continuously sent to the following train, so the situation is identified and maintained. There is a problem that the overall train operation is delayed until the maintenance measures are completed.

The track circuit failure prevention apparatus of the present invention solves the above problem, and its configuration is as shown in FIG. 3.

3, the track circuit failure prevention apparatus 200 of the present invention includes a transmission unit 110, a receiving unit 120 and a track relay 130 constituting the track circuit 100, and a relay control unit ( 210), the track detection unit 220, a backup system 230 and a backup track circuit device 240 is further included.

The relay control unit 210 acquires status information on whether the track relay 130 is normally operated in real time, transmits it to the backup system 230, and acts to excite the track relay 130 under a specific condition. The specific conditions will be described later.

The track detection unit 220 acquires in real time status information on whether the transmission unit 110 and the reception unit 120 operate normally and transmits it to the backup system 230, and the TLDS 80 of the conventional track circuit is It can be used as the trajectory detection unit 220.

The backup track circuit device 240 includes a backup transmission unit 241, a backup receiving unit 243, and a backup track relay 245, and when a malfunction of the track circuit 100 is detected, the track circuit 100 is It is controlled by the backup system 230 to be used as a substitute.

The backup system 230 is connected to the track detection unit 220, the relay control unit 210, and the backup track circuit device 240, respectively, and real-time status information from the track detection unit 220 and the relay control unit 210 It receives and analyzes and judges the received real-time status information. In addition, when a malfunction is detected in the transmission unit 110, the reception unit 120 or the track relay 130, a measure corresponding to the malfunction is performed.

As a result, the malfunction refers to a situation in which the track relay 130 does not operate normally, and the backup system 230 prevents the malfunction,

a) When the output side of the receiving unit 120 is abnormal,

b) when the transmission unit 110 is faulty or the input side of the reception unit 120 is abnormal, or

c) When the track relay 130 itself is faulty

It is categorized into three categories, and configured to respond to malfunctions in different ways for each case.

Meanwhile, the backup system 230 is configured to transmit information on the malfunction and response to the malfunction to the control station 250 to transmit one or more of an audible alarm (alarm) or a visual alarm (display) to the control station 250. . Malfunction information includes information on whether a malfunction has occurred, identification information of the track circuit where malfunction has occurred, the location of the malfunction (transmitter, receiver, etc.) and the type of malfunction (input side, output side failure, etc.). It includes whether the backup track circuit device 240 by 230 is switched, whether or not the track relay 130 is excited by the relay control unit 210. The audible or visual alarm informs the control office worker of malfunction information and information on the matters that the track circuit failure prevention device of the present invention responds to the malfunction, so that the situation can be easily identified, and additionally required. It allows actions to be taken (e.g. call maintenance team, etc.).

Hereinafter, the criteria for determining the normal or abnormality of the track circuit 100 by the backup system 230 will be described.

Although the track circuit failure prevention apparatus of FIG. 3 shows only the track circuit failure prevention apparatus 200 for one track circuit 100, in order to actually implement the track circuit failure prevention apparatus of the present invention, each track circuit 100 ), the track detection unit 220, the relay control unit 210, and the backup track circuit device 240 connected to the backup system 230 must be connected to one or more.

The backup system 230 determines whether or not the track relay 130 falls and excites sequentially in the traveling direction of the train with respect to the track circuits 100 continuously arranged on the train track 60. Watch over 210.

In addition, when the track relay 130 is excited, the output side of the transmission unit 110 and the input side of the receiving unit 120 of the track circuit 100 corresponding to the track relay 130 excited are monitored.

As a result of monitoring the track relay 130, the fall and excitation of the track relay 130 in the track circuits 100 are sequentially performed in the traveling direction of the train, and the transmission unit 110 and the receiving unit 120 monitoring result, excitation When it is detected that the output side of the transmission unit 110 and the input side of the receiving unit 120 of the track circuit 100 corresponding to the track relay 130 that has been activated, the energized track relay 130 It is determined that the track circuit 100 is normal.

When the track circuit 100 is determined to be normal by the backup system 230, the track relay 130 is operated by the track circuit 100, and there is no room for the backup track circuit device 240 to intervene.

However, when it is detected by the track detection unit 220 that the transmission unit 110 of the track circuit 100 is defective or the input side of the receiving unit 120 is abnormal, the backup system 230 The track circuit 100 is transferred to the backup track circuit device 240 to operate to secure a normal function.

In addition, even when it is detected by the relay control unit 210 that the track relay 130 of the track circuit 100 is a failure, the backup system 230 transfers the track circuit 100 to the backup track circuit. Switching to the device 240 operates to ensure normal function.

That is, in the case of the failure symptom, the backup system 230 replaces the track circuit 100 with the backup track circuit device 240, and the track relay (precisely, the backup track relay 245 included in the backup track circuit device 240) )) is normally excited or dropped so that an accurate signal about whether or not the railroad track is occupied can be sent to subsequent trains.

On the other hand, in the case of the above-mentioned failure symptom, the track relay 130 is no longer used until the maintenance work is completed, and the backup track relay 245 included in the backup track circuit device 240 is used. In the case of a failure symptom under a specific condition, the track relay 130 may be used as it is, but the control method may be different.

As mentioned above, the specific condition for the relay control unit 210 to energize the track relay 130 is that the status information for the receiving unit 120 of the track circuit 100 is normal for the input side and the output side This is a case that is detected by the trajectory detection unit 220 as abnormal.

In this case, the transmission unit 110 of the track circuit 100 operates normally, and the input side of the receiving unit 120 also operates normally, but the output side of the receiving unit 120 is faulty, and thus an operation signal, that is, DC power, to the track relay 130 If it is not possible to send, the relay control unit 210 to send DC power to the track relay 130 to solve the problem.

That is, in this case, the relay control unit 210 determines an abnormal failure of the receiving unit 120, and applies output power corresponding to the output of the receiving unit 120 to the track relay 130, and the track relay ( 130) works.

Thus, in the event of an irregular orbital fall caused by the receiving unit 120 or more, the track relay 130 can be operated to operate normally by intervening only the relay control unit 210 without necessarily intervening the backup track circuit device 240. There is an advantage of being there. The control method of the track relay 130 may contribute to extending the life of the backup track circuit device 240.

Hereinafter, a method for preventing failure of a track circuit according to the present invention will be described with reference to FIGS. 4 and 5.

FIG. 4 is an exemplary diagram illustrating the operation of the track circuit showing the division of the track circuit and the falling and excitation states of the track circuit for each segment, and FIG. 5 is a flowchart illustrating a method for preventing a failure of the track circuit according to the present invention.

A method of preventing a failure of a track circuit by the apparatus for preventing failure of a track circuit according to the present invention described above will be described. This track circuit failure prevention method is installed to be electrically connected to the track 60 of the train, and the transmission unit 110 connected to the power supply 40, and the receiving unit communicating with the transmission unit 110 through the train track 60 ( It is assumed that the configuration of the track circuit 100 including the track relay 130 connected to the receiving unit 120 and 120).

1) First, it is determined whether or not a specific track circuit (100-0: B115T) among the plurality of track circuits 100 continuously installed along the train track 60 is falling (S110). If the specific track circuit (100-0: B115T) has not fallen, it is determined that it is not the train operating time (S115).

2) Next, it is monitored whether the specific track circuit (100-0: B115T) and its front and rear track circuits (100-1: B113T, 100+1: B117T) are sequentially dropped and excited in the train traveling direction ( S120).

3) Next, by monitoring the output side of the transmission unit 110 and the input side of the receiving unit 120 of the specific track circuit (100-0) (S130), the track relay of the specific track circuit (100-0) When the output side of the transmission unit 110 and the input side of the reception unit 120 are normal when 130 is excited, it is determined that the specific track circuit is normal (S135).

4) However, if a) the specific track circuit (100-0) falls without sequentially dropping the track from the front track circuit (100-1) to the rear track circuit (100+1), b) a fall state The specific track circuit (100-0) of the forward and forward track circuits (100-1: B113T, 100-2: B111T) remain in a falling state even after sequentially excited, or c) excited front And in three cases, such as the case that the specific track circuit 100-0, which is excited without the fall of the forward track circuits 100-1: B113T, 100-2: B111T, falls first, the specific track circuit 100 -0) is determined to be abnormal (S140).

5) When the specific track circuit (100-0) is determined to be abnormal, in the case of a failure of the output side of the transmission unit 110 or an abnormal operation of the input side of the receiving unit 120 in the specific track circuit (100-0), (S150), the specific track circuit (100-0) is transferred to the backup track circuit device 240 (S155).

6) Or, when the specific track circuit (100-0) is determined to be abnormal, when the output side of the receiving unit 120 in the specific track circuit (100-0) is abnormal (S160), the relay control unit ( At 210), it is determined as an abnormal failure, and output power is applied to the track relay 130 to excite the track relay 130 (S165).

In the track circuit failure prevention method according to the present invention, in particular, the steps 1) to 3) (S110 to S130) can be set to be performed only during the train operating time and not to be processed during the blocking operation time. In other words, it is a structure that can set blocking conditions when necessary. The reason for first determining whether a specific track circuit (100-0: B115T) is falling in step 1) (S110) is because it is based on the premise of the train operating time.

The embodiments of the track circuit failure prevention apparatus and method according to the present invention have been described in detail above with reference to the accompanying drawings, but these are illustrative and should not be construed as limiting the scope of the present invention, and the scope of the present invention is only It should be noted that it is determined by the description of the following claims.

60: train track 80: TLDS
100: track circuit 110: transmitter
120: receiver 130: track relay
200: track circuit failure prevention device 210: relay control unit
220: track detection unit 230: backup system
240: backup track circuit device 241: backup transmission unit
243: backup receiver 245: backup track relay

Claims (7)

A device for preventing failure of a track circuit, which is installed to be electrically connected to the track of a train, and comprises a transmitting unit connected to a power supply device, a receiving unit communicating with the transmitting unit through the train track, and a track relay connected to the receiving unit,
A trajectory detection unit for acquiring in real time status information on whether the transmitting unit and the receiving unit are operating normally and transmitting it to a backup system;
A relay control unit for acquiring real-time status information on whether the track relay is operating normally, transmitting it to a backup system, and energizing the track relay under specific conditions;
A backup track circuit device comprising a backup transmission unit, a backup receiving unit, and a backup track relay, and controlled by a backup system to be used in place of the track circuit when a malfunction of the track circuit is detected; And
The track detection unit, the relay control unit, and the backup track circuit device are connected to each other, and the analysis and determination of real-time status information received from the track detection unit and the relay control unit are performed. A backup system for performing a measure corresponding to the malfunction when detected;
It is made including,
The backup system prevents the malfunction.
a) If the output side of the receiver is abnormal,
b) when the transmitting unit is defective or the input side of the receiving unit is abnormal, or
c) If the above track relay is broken
Classified as one of them and configured to respond to malfunctions in different ways,
It characterized in that at least one of an audible alarm (alarm) or a visual alarm (indication) is transmitted to the control station by transmitting information on the malfunction and response to the malfunction,
In addition, the backup system,
One or more of the track detection unit, the relay control unit, and the backup track circuit device connected to each of the track circuits are connected,
The track relay that is excited while monitoring through the relay control unit whether a specific track circuit and its front and rear track circuits are sequentially dropped and excited in the train traveling direction among the plurality of track circuits continuously installed along the train track. Monitoring the output side of the transmitting unit and the input side of the receiving unit of the specific track circuit corresponding to,
In the track circuits, when the track relays fall and excitation are sequentially performed in the traveling direction of the train, and the output side of the transmission unit and the input side of the receiving unit are normal when the track relay of the specific track circuit is energized, the specific track The circuit is judged to be normal,
a) When the specific track circuit falls from the front track circuit of the specific track circuit to the rear track circuit of the specific track circuit without sequentially falling of the track, b) the specific track circuit in the falling state is When the forward and forward track circuits of the specific track circuit are kept in a falling state even after they are sequentially excited, or c) the front of the specific track circuit that is excited and the forward track circuits of the specific track circuit are excited without falling When the specific track circuit first falls, it is determined that the specific track circuit is abnormal. The method according to claim 1,
The specific condition for the relay control unit to excite the track relay,
In the case where the state information of the receiving unit of the track circuit is detected by the track detection unit as the input side is normal and the output side is abnormal,
In this case, the relay control unit determines the abnormal failure of the receiving unit and operates to excite the track relay by applying an output power corresponding to the output of the receiving unit to the track relay. The method according to claim 1,
When the track detection unit detects that the transmission unit of the track circuit is faulty or the input side of the receiving unit is abnormal, the backup system switches the track circuit to the backup track circuit device and operates to secure a normal function. Track circuit failure prevention device, characterized in that. The method according to claim 1,
When the relay control unit detects that the track relay among the track circuits is faulty, the backup system switches the track circuit to the backup track circuit device and operates to secure a normal function. Failure prevention device. delete A method for preventing failure of a track circuit comprising a transmission unit connected to a power supply device, a receiving unit communicating with the transmission unit through the train track, and a track relay connected to the receiving unit,
1) determining whether a specific track circuit among the plurality of track circuits continuously installed along the train track is falling;
2) monitoring whether the specific track circuit and its front and rear track circuits are sequentially dropped and excited in the train traveling direction;
3) The output side of the transmission unit and the input side of the receiving unit of the specific track circuit are monitored, and when the output side of the transmission unit and the input side of the receiving unit are normal when the track relay of the specific track circuit is energized, the specific track circuit is normal. Determining that it is;
4) a) When the specific track circuit falls from the front track circuit to the rear track circuit without sequentially falling of the track, b) the specific track circuit in the falling state is sequentially excited by the forward and forward track circuits. Determining that the specific track circuit is abnormal when it is maintained in a falling state afterwards, or c) when the excited specific track circuit first falls without falling of the excited front and front track circuits;
5) switching the specific track circuit to a backup track circuit device in case of a failure at the output side of the transmission unit or an abnormal operation at the input side of the reception unit in the specific track circuit; And
6) if the output side of the receiving unit is abnormal in the specific track circuit, the relay control unit determines that it is an abnormal failure and applies output power to the track relay to energize the track relay;
Track circuit failure prevention method comprising a. The method of claim 6,
The method for preventing failure of a track circuit, characterized in that steps 1) to 3) are performed only during a train operating time.

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