KR20230073766A - system and control method for minimizing the boundary section of an uninsulated track circuit for DC electrification section - Google Patents

Abstract

The present invention provides a method for installing a sensor at a mini bond location, which is a boundary section of a track circuit, to solve a track circuit overlap problem of a track circuit boundary section and to optimize track relay transmitting/receiving sensitivity and provides a system for clarifying a boundary section of a track circuit by applying a train wheel detection function by using an optical sensor to solve a problem of the boundary section with an adjacent track circuit caused by a pre-short circuit and a post-short circuit of an AF track circuit.

Description

System and control method for minimizing the boundary section of an uninsulated track circuit for DC electrification section {system and control method for minimizing the boundary section of an uninsulated track circuit for DC electrification section}

The present invention relates to a system and control method for minimizing non-insulated track circuit boundary sections for DC electrification sections. It relates to a system and control method in which a sensor is installed at a bond position.

Invented in 1869, the track circuit device performs train control functions such as train position detection and speed control, and additionally has a rail breakage detection function. It is in use by some railway operating organizations.

The track circuit used the rail insulation method in the early days because the rail was used as an electric circuit, but it has developed into a non-insulation type track circuit due to problems such as high-speed train and riding comfort. Recently, non-insulation AF (Audio Frequency) track circuit has been widely used are doing

The non-insulation method distinguishes track circuits by using signal bonds to distinguish adjacent tracks and circuits.

When a mini bond (MB) is installed across both rails where trains pass, a blockage section is formed by both rails and two mini bonds crossing it, and a signal current flows there, thereby creating a single orbital circuit is formed.

However, due to the nature of the non-insulated main line AF track circuit operated in urban railways, pre-short and post-short circuits are inevitable. When this occurs, a problem that interferes with the automatic operation of the train occurs according to the related interlocking operation (locking).

In addition, in order to minimize interference with adjacent track circuits, it is difficult to maintain, such as supplementing through adjustment of the power output intensity of the track circuit transmission side and sensitivity adjustment of the receiver to drop the track relay.

Therefore, the need for a device and method capable of solving this problem is increasing.

(1) Korean Intellectual Property Office Application No. 10-2008-0088371 (2) Korean Intellectual Property Office Registration No. 10-0975343 (3) Korea Intellectual Property Office Registration No. 10-0972010 (4) Korean Intellectual Property Office Registration No. 10-0838327

An object of the present invention is to provide a user with a system and control method for minimizing a boundary section of a non-insulated track circuit for a DC electrification section.

Specifically, the present invention proposes a method of installing a sensor at the minibond position, which is the boundary of the track circuit, in order to solve the problem of overlapping track circuits in the track circuit boundary section of the prior art and to optimize the transmission / reception sensitivity of the track relay.

In addition, the present invention is a method of clarifying the boundary section of the track circuit by applying a train wheel detection function using an optical sensor to solve the problem of the boundary section with the adjacent track circuit due to the pre-short circuit and the post short circuit of the AF track circuit. want to present

On the other hand, the technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

An urban railway uninsulated track circuit boundary section minimization system, which is an aspect of the present invention for achieving the above technical problem, includes an optical sensor for sensing track circuit related information; and a signal for receiving the first information input to the track relay and the second information sensed by the optical sensor, and determining whether the transmitter/receiver of the track circuit is out of order by using the first information and the second information together. and a machine room signal control device, wherein the signal machine room signal control device compares the first information reception time of the track relay and the second information reception time by the optical sensor, and stores pre-short and post-short distance distances, Comparison and analysis, based on the comparatively analyzed reception time result and the comparatively analyzed pre-shunt and post-shunt distances, determine whether or not the allowable distance is exceeded, and determine whether the allowable distance is exceeded In this case, the operation level of the transmitter/receiver of the track circuit may be adjusted.

In addition, the optical sensor may be installed in the track circuit boundary section.

In addition, the signal machine room signal control device may compare the first information reception time and the second information reception time at the time when the train enters the track circuit and the time when it leaves the track circuit.

In addition, it further includes; a fault tracking device related to the track circuit, and the fault tracking device includes: a first transmitter for generating a signal having a positive frequency; a first receiver for receiving the frequency signal of the first transmitter transmitted through the rail; a second transmitter generating a signal having a predetermined frequency; a second receiver for receiving the frequency signal of the second transmitter transmitted through the rail; each tuning unit connected to the first and second transmitters and the first and second receivers to perform frequency tuning by being connected to both ends of the rail and to transmit and receive the tuning signal; a first microcomputer disposed between the first transmitter and the second receiver and receiving voltage and current, frequency signals, contact operation signals, and DC signals from the first transmitter and second receiver and respective connection cables; a second microcomputer disposed between the second transmitter and the first receiver and receiving voltage and current, frequency signals, contact operation signals, and DC signals from the first transmitter and the second receiver and respective connection cables; Receive voltage and current, frequency signal, contact operation signal, and DC signal from the 1st and 2nd microcomputers, and check the train occupancy status of the rail and the failure of the 1st and 2nd transmitters, 1st and 2nd receivers, and track relays, and each connection cable It may include a monitoring PC for determining whether or not the wire is disconnected.

In addition, a sensor unit composed of a coil sensor that electromagnetically induces a signal current flowing in a track circuit by non-contacting one rail line, and a coil sensor that receives a current value driven by the sensor unit and electromagnetically induces a current flowing in the track circuit A measuring unit that reads the current value induced by the coil sensor and converts the measured signal frequency into a measured value by passing only the set frequency among the signal frequencies of the plurality of components induced by the orbit circuit can be configured as a portable, straight-line structure. .

In addition, it is installed along the railroad at regular intervals, receives control signals from the control room PC inside, transmits and receives data in conjunction with other neighboring rack devices, drives and controls various signaling devices and track switching devices, and monitors their driving status. A SMPS device further comprising a non-insulated track circuit rack device equipped with a transmitter and a receiver to confirm, and configured inside the rack device, for supplying driving power to the transmitter and receiver; a current sensing unit configured inside the rack device and sensing an output current of the SMPS device; a switching control unit receiving the current sensing signal from the current sensing unit and transmitting and processing a switching control signal to a current distribution processing unit; By receiving a switching control signal from the switching control unit and switching a plurality of switches provided therein, the switches provided therein are automatically switched according to the number of SMPS devices mounted thereon to process equal power input to each SMPS device. It may be composed of a current distribution processing unit.

On the other hand, another aspect of the present invention for achieving the above technical problem, a method for minimizing a boundary section of an urban railway non-insulated track circuit, includes a first step of sensing track circuit-related information by an optical sensor; And the signal machine room signal control device receives the first information input to the track relay and the second information sensed by the optical sensor, and uses the first information and the second information together to transmit / A second step of determining whether the receiver is out of order; and, in the second step, the signal machine room signal control device compares the first information reception time of the track relay and the second information reception time by the optical sensor. and stores and compares and analyzes the pre-shunt and post-shunt distances, and exceeds the allowable distance based on the comparatively analyzed reception time result and the comparatively analyzed pre-shunt and post-shunt distances. It is determined whether or not, and if the allowable distance is exceeded, the operating level of the transmitter/receiver of the track circuit may be adjusted.

The present invention can provide users with a system and control method for minimizing boundary sections of non-insulated track circuits for DC electrification sections.

Pre-short circuit and post-short circuit are inevitable due to the nature of the non-insulated main line AF track circuit in operation in urban railways. In this case, the automatic operation of the train may be hindered according to the related interlocking operation (locking).

The present invention proposes a method of clarifying the boundary section of the track circuit by applying a train wheel detection function using an optical sensor in order to solve the problem of the boundary section with the adjacent track circuit due to the pre-short circuit and the post short circuit of the AF track circuit. .

In addition, the present invention researches and develops a non-insulated track circuit for branching that has excellent filtering ability so as not to affect pre- and post-short distance control and front and rear tracks, and can adjust the transmission and reception values to maintain balance with front and rear tracks. This is necessary, and through this, it can contribute to the reduction of branch track circuit failure and the punctual operation of trains.

In addition, the present invention prevents deterioration of the internal transformer coil by preventing overload in any one SMPS device by forcibly distributing current equally according to the number of installed SMPS devices, and can lower the failure rate, and can reduce the failure rate of any one SMPS device. When a failure occurs in a device, current is distributed and processed only to the remaining SMPS devices through current detection feedback, so there is an effect of having an uninterruptible system in real time, and safety accidents can be prevented by quickly responding to failure situations. There are advantages.

In addition, according to the present invention, by extracting the frequency, voltage, current value, and DC signal value transmitted through each connection line and connection device from the microcomputer installed for each location unit and grasping the state of each connection line and connection device, quickly It has the advantage of being able to quickly and accurately repair faults because it is possible to determine whether a fault has occurred, the type of fault, and the fault location.

In addition, according to the present invention, equipment for measuring the current value of the current flowing in the rail by a non-connected coil sensor by electromagnetic induction is manufactured as a portable device, which is convenient to use and can not affect the track circuit even when the frequency array interval is adjacent. It has the advantage that the maintainer can identify and operate the entire line environment.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

1 shows an example of a conceptual diagram of an urban railway non-insulated track circuit.
Figure 2 shows an example of the construction of an urban railway non-insulated track circuit in relation to the present invention.
Figure 3 shows an example of an overlapping section of a non-insulated track circuit in relation to the present invention.
4 shows an example of a minibond internal circuit diagram in relation to the present invention.
5 illustrates an example of a proposal for optimizing a track circuit boundary section in relation to the present invention.
6 shows an example of a flow chart (pre-short circuit countermeasures) of a control method when a track circuit boundary section sensor is applied in relation to the present invention.
7 shows an example of an automatic current distribution device of an AF non-insulated track circuit in relation to the present invention.
8 shows an example of a failure tracking device for a non-insulated AF trajectory circuit in relation to the present invention.
9 shows an example of a configuration diagram of a non-isolated AF trajectory circuit non-connected measuring device in relation to the present invention.
10 illustrates an example of a configuration of a frequency measuring unit in relation to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and it can be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. These terms are only for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

When a component is referred to as being connected or connected to another component, it may be directly connected or connected to the other component, but it may be understood that another component may exist in the middle. . On the other hand, when it is mentioned that a certain element is directly connected to another element or directly connected to another element, it can be understood that no other element exists in the middle.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions may include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms include or include are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features or numbers, It can be understood that the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded.

In addition, unless defined otherwise, all terms used in this specification, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. . Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, interpreted in an ideal or excessively formal meaning. It may not be.

Prior art and prior art problems

Invented in 1869, the track circuit device performs train control functions such as train position detection and speed control, and additionally has a rail breakage detection function. It is in use by the operating institution.

The track circuit used the rail insulation method in the early days because the rail was used as an electric circuit, but it has developed into a non-insulation type track circuit due to problems such as high-speed train and riding comfort. Recently, non-insulation AF (Audio Frequency) track circuit has been widely used are doing

In the non-insulation method, track circuits are distinguished using signal bonds (MB, mini-bond in FIG. 1) to distinguish adjacent tracks and circuits.

1 shows an example of a conceptual diagram of an urban railway non-insulated track circuit.

1 shows a track circuit for urban railways. When a mini bond (MB) is installed across both rails through which a train passes, one blocked section is formed by both rails and two mini bonds crossing it. is formed, and as a signal current flows here, one track circuit is formed.

In addition, Figure 2 shows an example of the construction of an urban railway non-insulated track circuit in relation to the present invention.

As shown in FIG. 2, the mini bonds 100 and 100' installed on the rails in the field and the transmitter 210, receiver 220, track relay 230, and signal control 240 installed in the signal machine room It consists of When the train enters the track circuit section, the track circuit is shorted by the wheel and the track relay in the signal machine room falls to recognize the train entry (position detection) and control the related signal control equipment interlocked by the signal control 240. .

In addition, Figure 3 shows an example of an overlapping section of a non-insulated track circuit in relation to the present invention.

Referring to FIG. 3, the mini bond installed on the rail at the site is composed of a combination of an impedance bond and a coupling unit, where the impedance bond is a train current ( Return current) and the signal current for the track circuit as a transformer, and the coupling unit passes two specific train detection frequencies and on-board signal frequencies in the track circuit, and is a filter circuit that blocks unnecessary frequencies. It is composed of LC combination circuit and resonates at the corresponding frequency.

4 shows an example of a minibond internal circuit diagram in relation to the present invention.

Referring to Figure 4, in the non-insulated track circuit method, the track boundary is not clearly divided than the insulated track circuit method, and overlapping sections of certain sections occur.

The phenomenon in which the track relay falls (generates a train detection signal) before the train enters the Track 2 track section (the train is located in the Track 1 section) is called Pre-Shunt, and the train is located in the Track 3 track section. However, the phenomenon in which the track circuit of Track 2 falls is called Post-Shunt.

In urban railways, the length of the pre-short circuit and the post-short circuit of the track circuit is 10 to 15 m, and the overlapping section of the track circuit is a loss section in terms of track utilization efficiency. In order to solve this problem, a device is added or research is in progress to reduce the boundary section of the AF non-insulated track circuit.

In other words, due to the nature of the non-insulated main line AF track circuit operated in urban railways, occurrence of pre-short and post-short circuits is inevitable, and in case of simple application, the non-insulated branch AF track circuit also causes pre-short and post-short circuit in the branch track. If this occurs, it may interfere with the automatic operation of the train according to the related interlocking operation (locking).

In addition, in order to solve the problem of overlapping track circuits, it is difficult to maintain, such as supplementing by adjusting the power output intensity of the track circuit transmission side and adjusting the sensitivity of the receiver to drop the track relay to minimize interference with adjacent track circuits. are experiencing

Non-insulated track circuit boundary section minimization system and control method for DC electrification section

In the present invention, in order to solve the above-mentioned conventional problems, it is intended to provide a system and control method for minimizing the boundary section of the non-insulated track circuit for the DC electrified section to the user.

Specifically, the present invention proposes a method of installing a sensor at the minibond position, which is the boundary of the track circuit, in order to solve the problem of overlapping track circuits in the track circuit boundary section of the prior art and to optimize the transmission / reception sensitivity of the track relay.

In addition, the present invention is a method of clarifying the boundary section of the track circuit by applying a train wheel detection function using an optical sensor to solve the problem of the boundary section with the adjacent track circuit due to the pre-short circuit and the post short circuit of the AF track circuit. want to present

5 shows an example of a proposal for optimizing a track circuit boundary section in relation to the present invention, and FIG. 6 shows an example of a flow chart (pre-short circuit countermeasure) of a control method when a track circuit boundary section sensor is applied in relation to the present invention. it did

Referring to FIG. 5, the present invention proposes a method of installing a sensor at a minibond position, which is a track circuit boundary, in order to solve the overlapping problem of track circuits in the track circuit boundary section and to optimize transmission/reception sensitivity of the track relay.

Referring to FIG. 5, an optical sensor transceiver device is added to the MB installed in the boundary section of the non-insulated track circuit.

In addition, when a train enters or exits, the corresponding track circuit track relay and optical sensor receiver comparator can be installed in the signal control device of the signal machine room.

In addition, in the present invention, pre-short and post-short distance comparison functions may be added to the signal control device in the signal machine room.

In addition, in the present invention, the function of adjusting the transmitter/receiver level when the pre-short and post-short distances are exceeded can be utilized by adding a function to the signal control device in the signal machine room.

Referring to FIG. 6, the present invention applies a train wheel detection function using an optical sensor to solve the problem of the boundary section with the adjacent track circuit due to the pre-short circuit and the post short circuit of the AF track circuit to determine the track circuit boundary section. Offer a way to clarify.

First, when a train enters, it is possible to determine whether or not the track relay has fallen (S1).

If there is a fall, it is determined once more whether or not the optical sensor has been received (S2), and if there is generated information on the optical sensor, it is determined that the track circuit is pre-shorted (S3).

Thereafter, it is determined whether the pre-short distance is within the set range (S4), and if not within the range, the procedure is terminated.

In addition, when there is no fall, it is determined once more whether or not the optical sensor is received (S5), and it is determined that the track circuit is faulty (S6).

In addition, if there is a fall and the optical sensor does not receive information, it is determined that the train occupies the track circuit section (S7).

That is, the present invention receives the first information input to the optical sensor and the orbit relay for sensing track circuit-related information and the second information sensed by the optical sensor, and uses the first information and the second information together , The signal machine room signal control device that determines whether the transmitter / receiver of the track circuit is out of order is used.

At this time, the signal control device in the signal machine room compares the first information reception time of the track relay and the second information reception time by the optical sensor, and stores and compares and analyzes the pre-short and post-short distances.

In addition, the signal machine room signal control device determines whether the allowable distance is exceeded based on the cross-analyzed reception time result and the comparatively analyzed pre- and post-short distances, and if the allowable distance is exceeded, the transmission of the track circuit /Adjusting the operating level of the receiver is a technical feature.

Automatic current distribution device of AF non-insulated track circuit

On the other hand, Figure 7 shows an example of an automatic current distribution device of an AF non-insulated track circuit in relation to the present invention.

Referring to this, the automatic current distribution device of the AF non-insulated track circuit according to one embodiment of the present invention configures a plurality of SMPS for supplying power to the transmitter and receiver inside the rack device, and input power to the plurality of SMPS devices. It is a device that performs automatic current distribution processing by feedback processing of current sensing and distribution processing so that this distributed processing can be performed, and automatically supplies power through the remaining SMPS when one SMPS fails or leaves.

The automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention converts the input current input to the rectifier (hereinafter referred to as a rectifier) provided inside the power supply unit (SMPS) for a rack into one By evenly distributing the power supply for all racks (SMPS) provided in the rack of the rack, overloading of the power supply for racks (SMPS) is prevented, and when one of the power supplies (SMPS) for racks fails, the current is automatically detected. It is a device that automatically detects current and processes distribution processing in a feedback method so that the input current is uniformly distributed to the remaining rack power supply (SMPS).

Such a rack power supply (SMPS) is provided inside a rack device spaced a certain distance from the railway side and is a known configuration, and a transmitter (not shown) and a receiver (not shown) for driving and controlling various signaling devices and line switching devices. ) A plurality of SMPS devices 450 and 460 for supplying power are respectively configured.

In the present invention, as an example, an automatic current distribution device composed of a plurality of SMPS devices 450 and 460 is presented as an example, but the automatic current distribution device 400 of the present invention includes a plurality of SMPS devices 450 and 460... Even if mounted, output power can be generated by injecting a uniform current into each SMPS device (450, 460...).

A typical non-insulated track circuit rack device is provided with a support shelf (not shown) at the bottom so that the SMPS device can be attached and detached in a sliding manner, and a transmitter (not shown) and a receiver (not shown) are installed on the upper shelf, respectively. It consists of a structure that can be attached and detached as a separate enclosure.

At this time, the plurality of SMPS devices 450 and 460 constituting the automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention each have a known rectifier 454 configured therein. , The rectifier 454 is a configuration for performing the basic function of a known SMPS device, a configuration for converting alternating current into direct current, making it a high frequency in a certain range again, transforming it using a ferrite transformer, and rectifying it. It consists of a combination of parts connected to each other that performs the function of maintaining a constant voltage as a PWM duty by feeding back the secondary side voltage to the primary side using a photocoupler or the like.

On the other hand, a plurality of SMPS devices (450, 460) constituting the automatic current distributor 400 of the AF non-insulated track circuit according to an embodiment of the present invention are connected to the AC input terminal therein, respectively, and are connected to the AC input power a surge/rush current prevention unit 452 for preventing burnout of internal elements of the rectifier due to excessive voltage or excessive inrush current applied when the rectifier is turned on; a current sensing unit 458 connected to and branched from the output terminal of the rectifying unit 454 to sense an output current; A power input unit 456 is configured to supply power applied from the rectifier 454 to a load side when all of the plurality of SMPS devices 450 and 460 are mounted.

At this time, the power supplied from the power input unit 456 to the load side is output power of 28V and 450A.

In addition, the plurality of SMPS devices 450 and 460 constituting the automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention are detected from the current sensing unit 458 therein, respectively. A data transmission unit 474 is configured to transmit the output current value to the control center PC 4 through the data communication network.

At this time, the data transmission unit 474 receives SMPS information in which the current is sensed from the switching control unit 472 . That is, the data transmission unit 474 receives the unique number of the current sensing unit 458 that generates the current sensing signal from the switching control unit 472, and through this, a certain port of the current distribution processing unit 470 is connected to the SMPS device. It is possible to determine whether (450, 460, ...) is connected, and how many SMPS devices (450, 460, ...) are normally operating. Accordingly, the information can be transmitted to the remote control center PC 4.

In addition, the automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention has a current distribution processing unit 470 at the input stage for supplying power to the plurality of SMPS devices 450 and 460, respectively. Is provided, the current distribution processing unit 470 is provided with a plurality of switches (not shown) inside, automatically according to the number of mounted SMPS devices (450, 460..) provided inside the switch is switched so that equal power is injected into each SMPS device (450, 460...).

On the other hand, the output current signal is received from the current sensing unit 458 of the SMPS devices 450 and 460.. included in the present invention, and the number of mounted SMPS devices 450 and 460.. is determined. A switching control unit 72 for switching the current distribution processing unit 470 according to the number of SMPS devices 450 and 460 is provided.

Therefore, the automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention determines how many of the plurality of SMPS devices 450 and 460 are mounted, and each mounted SMPS device ( 450, 460), the current distribution processing unit 470 is switched so that the current is equally distributed and applied, thereby preventing the current input to the load from being directed to either SMPS device (450, 460), and either SMPS When the devices 450 and 460 fail, uniformly stable power can be supplied to the rack device through the remaining SMPS devices 450 and 460.

On the other hand, the automatic current distribution device 400 of the AF non-insulated track circuit according to an embodiment of the present invention is a data transmission unit for transmitting the output current value and inspection signal of each SMPS device 450 and 460 to the control room PC 4 474 is further included, and the control room PC 4 receives the output current value of each SMPS device 450 and 460 from the data transmission unit 474 and monitors the presence or absence of an abnormality in the corresponding SMPS device 450 and 460 in real time. , It is possible to generate an alarm when an abnormal signal occurs, and the data transmission unit receives SMPS information sensed from the current sensing unit through the switching control unit and transmits it to the control room PC.

Fault Tracking Device for Non-Isolated AF Track Circuit

8 shows an example of a failure tracking device for a non-insulated AF trajectory circuit in relation to the present invention.

In the fault tracking device 2 of the non-insulated AF track circuit according to an embodiment of the present invention, any one line of the connection cable connected between the first and second transmitters 508A and 508B and the tuning units 514 and 516 A pulse generator 540 for generating a DC signal is provided, and a DC input unit 542 for transmitting the DC signal to the first and second microcomputers 522 and 524 is further provided on the other line.

Installing the pulse generator 540 and the DC input unit 542 on the connection cable line connected between the first and second transmitters 508A and 508B and the tuning unit 514 and 516, the first and second transmitters ( 508A and 508B) and the tuning units 514 and 516 to determine whether or not the connection cable is disconnected. That is, when checking the voltage or impedance of the connection cable, the voltage is detected even when the cable is disconnected, so it is not suitable for determining whether or not the cable is disconnected.

In contrast, the present invention can accurately check the presence or absence of disconnection.

In addition, the monitoring PC is further provided with a memory (not shown) in which normal voltage, current values, and frequency values for each location are stored therein, and is configured to compare the detected detection signal and the stored normal signal to determine the presence or absence of an abnormality. It is done.

That is, the monitoring PC receives the pulse signal received by the DC input unit 542 from the first and second microcomputers 522 and 524 distributed in a plurality of locations and compares the pulse signal with a preset pulse signal to the first and second transmitters. The connection state between 508A and 508B and the tuning units 514 and 516 can be grasped.

In addition, a capacitor C1 is formed in the matching transformer line provided inside the first and second transmitters 508A and 508B, so that the pulse wave carried on the line from the pulse generator 540 affects the matching transformer. and is removed by capacitor C1.

Non-insulation AF track circuit non-connected measuring device

9 shows an example of a configuration diagram of a non-isolated AF trajectory circuit non-connected measuring device in relation to the present invention.

As shown in FIG. 9, the present invention largely includes an input unit 601 receiving a signal from a track circuit and amplifying and rectifying the signal with a coil sensor or the like, a microprocessor unit 602, an LCD unit 603 for display, It is largely divided into an external PC (604).

In other existing products, H/W was structured using inductors and capacitors for each frequency characteristic, so it was inevitable to modify the H/W to change the frequency filter band, but due to the application of the digital filter, the MCU The frequency domain of the digital filter can be changed by changing the reference clock frequency in the (Micro Controller Unit).

The communication line between the MCU and the clock generator according to the present invention is configured in a serial communication method, and has a frequency-specific data table for setting the frequency of the clock generator inside the MCU.

When the user wants to change the frequency band, the frequency band setting data is transmitted to the clock generator to set the frequency output.

The clock generator outputs a clock frequency of 3.3V level to be used in the digital band pass filter according to the input set value, and the digital band pass filter 7762 adjusts and sets the BPF band area according to the input clock frequency.

The frequency measurement is input to the MCU by dividing the frequency using D-Flip Flop for frequency accuracy with respect to the signal that has passed through the digital band pass filter 7762.

The MCU calculates and outputs the initially input frequency value by reflecting it in the software (S/W) as much as the ratio divided by the input hardware (H/W). At this time, the signal processing of the high frequency signal part and the low frequency signal part is the same.

The frequency signal level measurement is input to the ADC terminal of the MCU through the signal amplifier to measure the minute and small signals input for the input signal.

The signal input to the ADC terminal is sampled at a sampling rate of 20Khz, and the amplification ratio amplified at the H/W stage after integrating the remaining value after subtracting the reference value from the measured level value for a certain period to remove the DC level component and taking the average value is reflected to output the final signal level value.

Therefore, the same magnetic field is formed on the rail due to the current caused by the signal flowing around the rail, and the voltage is induced in the pickup coil of the sensor unit to transmit the signal to the input terminal of the measurement unit. Therefore, a signal input from only one rail is sufficient as the signal at the input end of the measuring unit.

10 illustrates an example of a configuration of a frequency measuring unit in relation to the present invention.

As shown in FIG. 10, the signal level measuring unit includes an input stage composed of a coil sensor, a frequency filter 752, a frequency amplifier 753, and a frequency rectifier 754, an analog to digital converter (ADC; 755) and an RMS It consists of a control stage composed of a converter (RMS Converter; 756).

Specifically, the signal level measuring unit serves to measure the level of the signal received from the track circuit through the coil sensor 751, and the input terminal is a frequency filter 752, a frequency amplifier 753, and a frequency rectifier 754. configured, receives the signal of the input terminal, samples and digitizes in the analog-to-digital converter 755 of the MCU, and converts the converted value into an RMS (Root Mean Square) value in the RMS converter 756 so that the signal frequency can be analyzed process the signal.

The coil sensor 751 may further include a Faraday shield to prevent external noise from being transferred to the pickup coil.

The Faraday shield prevents external noise from being transmitted to the coil sensor and allows a magnetic field to be transmitted to the coil sensor, thereby enabling more accurate current measurement of the coil sensor.

The automatic search unit of the user setting unit automatically sets the signal frequency of the current track circuit by analyzing the signal frequency and signal level measured from the track circuit without the need for a separate operation without the user manually setting the signal frequency of the track circuit An automatic frequency search function is further included.

The user setting unit is electrically connected to the automatic search unit to determine the signal frequency of the track circuit and automatically select it. It is convenient because it automatically sets the signal frequency.

If the frequency automatic search function is used, the adjacent frequency of a track circuit using a different frequency can also be grasped, so that the maintainer can easily grasp the entire track environment that can affect the track circuit.

The frequency measuring unit performs frequency amplification and frequency rectification for high and low signals with two digital band pass filters 762 receiving signals received from the coil sensor 761, a signal amplifier 763, and a signal rectifier 764. The MCU processes and transmits the signal so that it can be analyzed, and the frequency counter of the MCU counts the input signal for one cycle and digitizes the high frequency and low frequency pulses for each of the high and low signals, and the MCU The hertz converter of converts the digitized value into units of Hz to generate a measured value.

The frequency measuring unit includes two digital band pass filters (Digital BPF; 762) capable of filtering high and low frequency pulses for each of the high and low signals in the coil sensor 761 and a signal amplifier that amplifies them. AMP; 763) and a signal rectifier (Signal Rectification; 764) that rectifies it, and the MCU that analyzes it has a Frequency Counter (765) that counts the input signal for a certain period and the value digitized in the frequency counter in Hz It is composed of a hertz converter (Hz Converter) 766 that converts into units and a display unit 767.

In addition, the non-insulated AF track circuit non-connected measuring device further includes a built-in battery capable of charging/discharging.

As shown in the drawing, the built-in battery is attached to a predetermined position of the portable built-in battery having a straight-line structure for easy portability, and can be exchanged by including a detachable case.

The signal level of the track circuit measured for the built-in battery and the measured value of the signal frequency can be displayed on the display unit that can check the remaining battery capacity, so that the user can check the remaining capacity directly on the display unit, and it is manufactured as a portable We reduced the situation where measurement was impossible due to battery problems as much as possible.

In addition, the display unit can quickly determine the location of a failure of various digital modules and batteries, and can quickly deliver the information to an operator or maintenance person.

The measured value is updated in real time and can be recorded as a LOG file when connected to a PC other than the display unit.

Here, the PC and interface method uses the full duplex RS-232 communication interface.

For example, the PC includes a database, and measurement values updated in real time can be stored in the database in units of days, hours, minutes, and seconds, and progress can be grasped by obtaining only a LOG file from a remote location.

Signal information that can be checked on the display unit includes detection frequency information and set frequency information (771), code name information and measurement code frequency information (772), measurement current value information (773), dBm conversion value information (774), and equipment status information 775 and the like.

Effect according to the present invention

The present invention can provide users with a system and control method for minimizing boundary sections of non-insulated track circuits for DC electrification sections.

Pre-short circuit and post-short circuit are inevitable due to the nature of the non-insulated main line AF track circuit in operation in urban railways. In this case, the automatic operation of the train may be hindered according to the related interlocking operation (locking).

The present invention proposes a method of clarifying the boundary section of the track circuit by applying a train wheel detection function using an optical sensor in order to solve the problem of the boundary section with the adjacent track circuit due to the pre-short circuit and the post short circuit of the AF track circuit. .

In addition, the present invention researches and develops a non-insulated track circuit for branching that has excellent filtering ability so as not to affect pre- and post-short distance control and front and rear tracks, and can adjust the transmission and reception values to maintain balance with front and rear tracks. This is necessary, and through this, it can contribute to the reduction of branch track circuit failure and the punctual operation of trains.

In addition, the present invention prevents deterioration of the internal transformer coil by preventing overload in any one SMPS device by forcibly distributing current equally according to the number of installed SMPS devices, and can lower the failure rate, and can reduce the failure rate of any one SMPS device. When a failure occurs in a device, current is distributed and processed only to the remaining SMPS devices through current detection feedback, so there is an effect of having an uninterruptible system in real time, and safety accidents can be prevented by quickly responding to failure situations. There are advantages.

In addition, according to the present invention, by extracting the frequency, voltage, current value, and DC signal value transmitted through each connection line and connection device from the microcomputer installed for each location unit and grasping the state of each connection line and connection device, quickly It has the advantage of being able to quickly and accurately repair faults because it is possible to determine whether a fault has occurred, the type of fault, and the fault location.

In addition, according to the present invention, equipment for measuring the current value of the current flowing in the rail by a non-connected coil sensor by electromagnetic induction is manufactured as a portable device, which is convenient to use and can not affect the track circuit even when the frequency array interval is adjacent. It has the advantage that the maintainer can identify and operate the entire line environment.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

Meanwhile, the above-described embodiments of the present invention may be implemented through various means. For example, embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.

In the case of hardware implementation, the method according to the embodiments of the present invention includes one or more ASICs (Application Specific Integrated Circuits), DSPs (Digital Signal Processors), DSPDs (Digital Signal Processing Devices), PLDs (Programmable Logic Devices) , Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

In the case of implementation by firmware or software, the method according to the embodiments of the present invention may be implemented in the form of a module, procedure, or function that performs the functions or operations described above. The software codes may be stored in a memory unit and driven by a processor. The memory unit may be located inside or outside the processor and exchange data with the processor by various means known in the art.

Detailed descriptions of the preferred embodiments of the present invention disclosed as described above are provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a manner of combining with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims may be combined to form an embodiment or may be included as new claims by amendment after filing.

Claims (7)

An optical sensor for sensing track circuit related information; and
A signal machine room that receives the first information input to the track relay and the second information sensed by the optical sensor, and determines whether the transmitter/receiver of the track circuit is out of order by using the first information and the second information together. Including; signal control device;

The signal machine room signal control device,
Comparing the first information reception time of the track relay and the second information reception time by the optical sensor,
Pre-paragraph and post-paragraph distances are stored, compared and analyzed,

Based on the comparatively analyzed reception time result and the comparatively analyzed pre-shunt and post-shunt distances, determining whether an allowable distance is exceeded,

When the allowable distance is exceeded, the urban railway uninsulated track circuit boundary section minimization system, characterized in that for adjusting the operation level of the transmitter / receiver of the track circuit. According to claim 1,
The optical sensor is an urban railway non-insulated track circuit boundary minimization system installed in the track circuit boundary section. According to claim 2,
The signal machine room signal control device,
An urban railway non-insulated track circuit boundary section minimization system for comparing the first information reception time and the second information reception time at the time when the train enters the track circuit and the time when it leaves the track circuit. According to claim 3,
Further comprising a fault tracking device related to the track circuit;
The failure tracking device,
a first transmitter generating a signal having a positive frequency;
a first receiver for receiving the frequency signal of the first transmitter transmitted through the rail;
a second transmitter generating a signal having a predetermined frequency;
a second receiver for receiving the frequency signal of the second transmitter transmitted through the rail;
each tuning unit connected to the first and second transmitters and the first and second receivers to perform frequency tuning by being connected to both ends of the rail and to transmit and receive the tuning signal;
a first microcomputer disposed between the first transmitter and the second receiver and receiving voltage and current, frequency signals, contact operation signals, and DC signals from the first transmitter and second receiver and respective connection cables;
a second microcomputer disposed between the second transmitter and the first receiver and receiving voltage and current, frequency signals, contact operation signals, and DC signals from the first transmitter and the second receiver and respective connection cables;
Receive voltage and current, frequency signal, contact operation signal, and DC signal from the 1st and 2nd microcomputers, and check the train occupancy status of the rail and the failure of the 1st and 2nd transmitters, 1st and 2nd receivers, and track relays, and each connection cable A system for minimizing the boundary section of an urban railway non-insulated track circuit including a monitoring PC to determine whether a line is disconnected. According to claim 4,
A sensor unit composed of a coil sensor that electromagnetically induces the signal current flowing in the track circuit by non-contacting one rail line, and a coil sensor and the coil that reads the current value driven by the sensor unit and electromagnetically induces the current flowing in the track circuit Urban railway non-insulation consisting of a portable, straight-line structure with a measuring unit that reads the current value induced by the sensor and converts the measured signal frequency into a measured value by passing only the set frequency among the signal frequencies of a plurality of components induced by the track circuit Track circuit boundary section minimization system. According to claim 5,
It is installed along the railroad at regular intervals, receives control signals from the control room PC inside, transmits and receives data in conjunction with other neighboring rack devices, drives and controls various signaling devices and track switching devices, and checks their driving status. Further comprising a non-insulated track circuit rack device equipped with a transmitter and a receiver,
an SMPS device configured inside the rack device and supplying driving power to the transmitter and receiver;
a current sensing unit configured inside the rack device and sensing an output current of the SMPS device;
a switching control unit receiving the current sensing signal from the current sensing unit and transmitting and processing a switching control signal to a current distribution processing unit;
By receiving a switching control signal from the switching control unit and switching a plurality of switches provided therein, the switches provided therein are automatically switched according to the number of SMPS devices mounted thereon to process equal power input to each SMPS device. City railway non-insulated track circuit boundary section minimization system composed of current distribution processing unit. A first step of sensing track circuit-related information by an optical sensor; and
The signal control device in the signal machine room receives the first information input to the track relay and the second information sensed by the optical sensor, and uses the first information and the second information together to transmit/receive the track circuit. Including; a second step of determining whether or not there is a failure;

In the second step, the signal machine room signal control device,
Comparing the first information reception time of the track relay and the second information reception time by the optical sensor,
Pre-paragraph and post-paragraph distances are stored, compared and analyzed,
Based on the comparatively analyzed reception time result and the comparatively analyzed pre-shunt and post-shunt distances, determining whether an allowable distance is exceeded,
When the allowable distance is exceeded, an urban railway non-insulated track circuit boundary section minimization method, characterized in that for adjusting the operation level of the transmitter / receiver of the track circuit.

Images