KR20140023015A - Aparatus for audio frequency track circuit - Google Patents

Abstract

A track circuit apparatus is disclosed. According to the present invention, the track circuit apparatus comprises at least one transmitting unit, at least one receiving unit and a monitoring unit. The transmitting unit modulates a code frequency according to a speed code signal received from an external device, a predetermined train detection frequency, and a cab signal frequency, and outputs a transmitting signal. The receiving unit analyzes a signal received from a field device, and controls a track relay according to the analysis. The monitoring unit displays the status information on a signal received from the transmitting unit or receiving unit, and transfers the information to the external device. The predetermined train detection frequency and the cab signal frequency are set by being selected among digital frequencies stored in a memory. [Reference numerals] (20) External device; (30) Field device; (300) Monitoring unit; (40) Track relay; (AA) First transmitting unit; (BB) Second transmitting unit; (CC) First receiving unit; (DD) Second receiving unit

Description

AF track circuit device {APARATUS FOR AUDIO FREQUENCY TRACK CIRCUIT}

The present invention relates to a track circuit device corresponding to the ground equipment of the automatic train control system, and more particularly to a track circuit device using a frequency of an audible frequency band.

The track circuit is connected to the transmitting circuit and the receiving circuit at both ends of the track by using the track as a transmission medium, and constitutes an electric circuit. If it is not transmitted, it is an electric circuit installed on track to recognize the existence of a train on track and to control the signal equipment such as signal, line switch, and interlocking device directly or indirectly.

The winry of the track circuit divides the rail into suitable sections, installs track insulation to electrically insulate the adjacent track circuit, and connects it with a revel bond to reduce the connection resistance of the rail joints in the track circuit. On the side, an orbital relay is connected to form an electric circuit. When there is no train in the track circuit, the relay is excited by the current flowing from the power supply, and when the train enters, the track circuit is shorted by the axle and thus is not excited. On the other hand, AF track circuit device refers to the configuration of the track circuit using the frequency of the audio frequency band, while the conventional track circuit device uses a commercial frequency or DC BIAS.

The conventional track circuit device uses a solid wire as a method of receiving information from an external device, which requires a complicated wiring work, and it is difficult to find a cause when a failure occurs. In addition, the size of the output orbital frequency may vary depending on the installation location for each track circuit device, but the conventional track circuit device may not easily adjust the output frequency.

An object of the present invention for solving the above problems is to provide a track circuit device that can easily change the output frequency without the need for complicated wiring.

One aspect of the present invention for achieving the above object is a track circuit device comprising at least one transmitter, at least one receiver and a monitor, wherein the transmitter is a code frequency according to a speed code signal received from an external device And modulate a preset train detection frequency and on-board signal frequency to output a transmission signal, wherein the receiver is configured to analyze a signal received from the field apparatus, and control the track relay according to the analysis result. And display status information of the signal received from the transmitter or receiver and transmit the status information to the external device, wherein the preset train detection frequency and the on-vehicle signal frequency are selected and set among the frequencies stored in a digital form in a memory. Track circuit device, characterized in that Lt; / RTI >

The transmitter may include means for setting a train detection frequency and a vehicle signal frequency by selecting a specific frequency among frequencies stored in a digital form in the memory.

Another aspect of the present invention for achieving the above object is a track circuit device comprising at least one transmitter, at least one receiver and a monitor, wherein the track circuit device has a unique identification number, the transmitter Receiving a speed code assigned with the identification number from an external device in a serial communication method, modulating a code frequency according to the received speed code signal, a preset train detection frequency and a vehicle signal frequency, and outputting a transmission signal; The receiver is configured to analyze a signal received from the field apparatus, and control the orbital relay in accordance with the analysis result, wherein the monitoring unit displays the status information of the signal received from the transmitter or receiver and the status information to the external device To provide a track circuit device, characterized in that configured to transmit to do.

In the case of using the track circuit device according to the present invention as described above, a serial communication method between the external device and the track circuit device, that is, a unique address (identification number) for each track circuit device is designated and processed to communicate with the external device. By eliminating cables and transmitting information to multiple track circuit devices with a single communication line, trouble can be prevented and maintenance is easy, and various relays used between external devices and track circuit devices can be eliminated, thereby reducing equipment costs. It also has the effect, and it is possible to operate without interruption by configuring the transceiver in dual system.

In addition, it is possible to easily adjust the frequency output from the transmitter of the track circuit device by generating a frequency by frequency size, digitizing it, storing it in a memory, and recalling it when necessary. This has the advantage that can be installed while adjusting the output for each section.

1 shows a schematic configuration of a track circuit system according to an embodiment of the present invention.
2 shows a configuration in which a track circuit device and an external device are connected through an internal communication line according to an embodiment of the present invention.
3 is a block diagram showing a connection relationship between components and components of the track circuit apparatus according to an embodiment of the present invention.
4 is a conceptual diagram illustrating a process of generating and storing a frequency for setting a track frequency of a track circuit device according to an embodiment of the present invention.

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

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

When a component is mentioned as having ∀ connected ∀ or ∀ connected ∀ to other components, it may be directly connected to or connected to that other component, but there may be other components in between. Should be. On the other hand, when an element is referred to as being directly connected ∀ directly or ∀ directly connected to another component, it should be understood that there is no other component in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms ∀ include ∀ or ∀ have ∀ and the like are intended to indicate that there exists a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 shows a schematic configuration of a track circuit system according to an embodiment of the present invention.

Referring to FIG. 1, a track circuit system according to an embodiment of the present invention may operate in conjunction with a track circuit device 10, an external device 20, a field device 30, and a track relay 40.

Track circuit device 10 may be composed of a plurality, each track circuit device 10 may be given a unique identification number to distinguish from each other. This identification number may be used in communication with the external device 20.

The external device 20 may include a speed code logic circuit composed of an interlock device and a relay configured as a system, and the field device 30 may include a mini bond and a coupling unit.

In addition, the external device 20 may be configured to be connected to the track circuit device 10 in a serial communication method. This will be described with reference to the drawings.

2 shows a configuration in which a track circuit device and an external device are connected through an internal communication line according to an embodiment of the present invention.

Referring to Figure 2, the track circuit device 10 according to an embodiment of the invention can be connected to the external device 20 in the RS-422 communication method, the external device 20 when receiving a signal track track circuit By carrying the identification number of the device 10, each track circuit device 10 can be configured to identify the signal sent to it.

In this way, by designating the address for each track circuit device 10 and processing it by communication, complicated wiring is removed, and information is provided to the track circuit devices 10 using only one communication line in the external device 10. This makes it easy to wire and reduce the possibility of failure.

In particular, by transmitting information from the external device 20 to the track circuit device 10 by communication, various relays used between the external device 20 and the track circuit device 10 may be deleted, thereby reducing the installation cost.

3 is a block diagram showing the configuration of the track circuit device and the connection between the components according to an embodiment of the present invention.

Referring to FIG. 3, the track circuit device 10 according to an embodiment of the present invention may include a receiver 100, a transmitter 200, and a monitor 300.

In addition, referring to Figure 3 the detailed configuration of the track circuit device 10 according to an embodiment of the present invention can be described as follows.

The transmitter 100 may be configured to output a modulated signal by modulating a code frequency according to a speed code received from the external device 20, a preset train detection frequency, and a vehicle signal frequency.

In this case, the information received from the external device 20 may be analyzed by the transmitter 100 to calculate the time and output the output according to the calculated time. When an abnormality occurs, the output is blocked by causing a failure in the output itself. It can also be configured to. In other words, if the voltage level and the code frequency are different from the output information by feeding back the output signal, the transmission output can be cut off by performing error processing without outputting the transmission signal.

In addition, to adjust the train detection frequency and on-vehicle signal frequency output, by connecting a dip switch to the main board of the track circuit device and manipulating it, a specific frequency is retrieved from the frequencies stored in the digital form in the memory to detect the train detection frequency. And the difference signal frequency. A more detailed configuration for configuring the train detection frequency and the onboard signal frequency in software will be described later.

On the other hand, each track circuit device 10 may have a unique identification number (ID), the identification number (ID) from the external device 20 to the internal communication line (for example, RS-422 communication described through FIG. 3) Method) can be used to check and receive whether the signal is sent to itself when receiving the speed code signal. For example, by specifying an identification number (ID) in the speed code information received by the transmitter 100, the external device 20 can be configured to process the speed code using this identification number, and a separate LAN It can also be configured using the -422 converter equipment.

That is, in the past, a solid line is used as a method of transmitting information from an external device, but unlike this, by designating a street address (ID: identification number) for each track circuit device, the communication process is eliminated and the cable connected to the interlocking device 1 It is possible to transmit information to several track circuit devices through two communication lines. This also reduces equipment costs since the various relays used between the interlock and the track circuit device are not needed.

In addition, the transmitter 100 may be configured in a dual system switching method. For example, it can be configured using both a hardware fixed method and a communication method, and can be configured to switch over if a fault occurs.

The receiver 200 may be configured to analyze the train detection frequency, the onboard signal frequency, and the code frequency component of the signal received from the field device 30, and control the track relay 40 according to the analysis result. For example, the receiver 200 compares the train detection frequency, the onboard signal frequency, and the code frequency component of the signal input through the field apparatus 30 with the signal output from the transmitter 100, and determines whether there is a match. The track relay 40 may be controlled according to the determination result.

In addition, the receiver 200 may be configured in a dual system parallel. The two receivers can be used in parallel, and two signals can be analyzed to operate using a normal receiver if one receiver is faulty. .

The monitoring unit 300 is configured to display the status information of the train detection frequency, the on-board signal frequency and the code frequency received from the transmitter 100 or the receiver 200 and transmit the status information to the external device 20 in a serial communication method. Can be.

In particular, the monitoring unit 300 may be configured to display necessary information among the information received from the transmitting unit 100 and the receiving unit 200 on the LCD screen, and to store other information in a storage device and call it when necessary. .

4 is a conceptual diagram illustrating a process of generating and storing a frequency for setting a track frequency of a track circuit device according to an embodiment of the present invention.

Referring to FIG. 4, a process of setting an orbital frequency according to an embodiment of the present invention may be described as follows.

First, a frequency is generated using a separate frequency generation program so that the transmitter can freely adjust the outputs of the train detection frequency and the onboard signal frequency (FIG. 4A). The frequency generated in this way is digitized (b in FIG. 4), stored in a memory for each frequency size, and a frequency component of a required size can be loaded to adjust the train detection frequency and the onboard signal frequency signal output.

At this time, the method of adjusting the train detection frequency and the on-vehicle signal frequency signal output may be configured by using a dip switch to simplify the transmission output. With this configuration, the track circuit device in any section can be compatible. For example, when each transmission output is configured to be adjusted and output in 32 steps, each step may be configured to be stored in a flash memory using an internal program and called up when needed.

In this way, by allowing the software to adjust the frequency output of the transmitter, it can be applied to several sections with different frequencies using the same manufactured product.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

10 track circuit device
100 transmitter
200 receiver
300 watchdog
20 External device (interlocking device)
30 Field Equipment
40 Orbital Relay
30 2nd handle

Claims (11)

In the track circuit device comprising at least one transmitter, at least one receiver and a monitoring unit,
The transmitter is configured to output a transmission signal by modulating a code frequency according to a speed code signal received from an external device, a preset train detection frequency and a vehicle signal frequency,
The receiver is configured to analyze the signal received from the field device, and control the track relay in accordance with the analysis result,
The monitoring unit is configured to display state information of a signal received from the transmitting unit or the receiving unit and to transmit the state information to the external device,
And the predetermined train detection frequency and the on-vehicle signal frequency are selected and set among frequencies stored in a digital form in a memory. The method of claim 1, wherein the transmitting unit,
And means for setting a train detection frequency and a vehicle signal frequency by selecting a specific frequency among frequencies stored in a digital form in the memory. The method of claim 2, wherein in the transmitting unit,
The means for setting the train detection frequency and the vehicle signal frequency is a track circuit device, characterized in that it comprises a dip switch (Dip Switch) connected to the main board. The method according to any one of claims 1 to 3,
And the frequency stored in the digital form is stored in the memory so that the frequency component generated by using a separate program can be designated and called according to the size. The method according to any one of claims 1 to 3,
The track circuit device has a unique identification number,
And the transmitting unit receives the speed code assigned with the identification number from the external device in a serial communication method. The method according to any one of claims 1 to 3, wherein the transmitting unit,
Track circuit device, characterized in that configured in a dual system transfer system consisting of a hardware fixed method and a communication method. The method according to any one of claims 1 to 3, wherein the receiving unit,
Comparing the train detection frequency, on-board signal frequency and code frequency components of the signal input through the field device with the signal output from the transmitter to determine whether the match, and to control the orbital relay according to the determination result Track circuit device. The method according to any one of claims 1 to 3, wherein the receiving unit,
Track circuit device, characterized in that configured to operate in a dual system parallel processing method. In the track circuit device comprising at least one transmitter, at least one receiver and the monitoring unit, the track circuit device has a unique identification number,
The transmission unit receives the speed code given the identification number from an external device in a serial communication method, and modulates a code frequency according to the received speed code signal, a preset train detection frequency, and a vehicle signal frequency to output a transmission signal. Composed,
The receiver is configured to analyze the signal received from the field device, and control the track relay in accordance with the analysis result,
And the monitoring unit is configured to display state information of a signal received from the transmitting unit or the receiving unit and to transmit the state information to the external device. The method of claim 9,
The preset train detection frequency and the on-vehicle signal frequency is selected and set among the frequencies stored in the digital form in the memory,
And the transmitter comprises means for setting a train detection frequency and a vehicle signal frequency by selecting a specific frequency among frequencies stored in the digital form in the memory. The method according to claim 9 or 10,
And the frequency stored in the digital form is stored in the memory so that the frequency component generated by using a separate program can be designated and called according to the size.

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