KR20140122823A - Train Operating Control System using RFID - Google Patents

Abstract

The present invention relates to a train operation control system using an RFID capable of controlling a train in low costs and high accuracy by grafting a high-tech RFID sensor to a vehicle-ground wire-wireless communications technique to control a train. The train operation control system includes a train including: an RFID reader reading RFID tag information recorded in an RFID tag arranged in a railroad; a communications unit to transmit driving information including the RFID tag information and receive the driving information on other trains which are in operation regardless of the train; and a driving control unit controlling a driving speed of the train by analyzing the received driving information of the other trains.

Description

[0001] The present invention relates to a train operating control system using RFID,

[0001] The present invention relates to a train operation control system using RFID technology, and more particularly, to a train operation control system that reads an installation position information of an RFID tag recorded on an RFID tag disposed on a track, Control system.

A train is a mass transport transportation system in which high safety is a top priority. In order to prevent a collision between a preceding train and a next train, the next train grasps the position information of the preceding train and performs braking control. In order to realize this, the train position information is collected through the track circuit of the current ground line and the limited speed information is transmitted to the following train through the signal display of the line side.

  However, in order to realize such train spacing control, a lot of ground equipment is required on the track side. That is, a track circuit should be installed at regular intervals of the rails in order to grasp train position information, a ground signal device for displaying a progress signal on a follower train according to train position information, a train forcing a train And an automatic block system for interlocking them are installed and operated.

In addition, for automatic train operation, an automatic train operation must be installed for stationary stopping in the station, train start control, and acceleration / deceleration control. The configuration of such an automatic train operating apparatus is constituted by an on-board automatic train operating facility of a train and a ground-based automatic train operating facility installed on each station.

  In this way, the existing signal facilities require installation of numerous facilities on the railway line for train control, and installation of ground-based automatic train operation equipment in each station function room for automatic operation of trains such as stationary stop, It takes a great deal of money to pay.

1 is a diagram showing the configuration of a conventional train control system.

Conventional train control systems consist of a centralized control system of the command room, interlocking devices of signaling machine rooms in the region, track circuits on the track, signaling devices, line switching devices and vehicle signaling equipment. And it sends the line status control information to the field facility so that it can be operated according to the schedule of the train, and the position information of the train is transmitted to the Centralized Traffic Control And informs the engineer who drives the train through a signal.

On the other hand, Korean Patent Laid-Open No. 10-2010-0083051 is disclosed as a representative prior art using an RFID (Radio Frequency Identification) tag. The representative prior art includes a plurality of RFID tags which are installed along the railroad track in which fixed information such as RFID tag installation information and line information is stored and performs noncontact communication with the RFID reader of the train system to transmit the fixed information A line system for relaying variable information and train operation information exchange between the train system and the command system; The RFID tag is installed in a train and includes an RFID reader. The RFID tag performs non-contact communication with the RFID tag of the line system to transmit train driving information such as train speed information and train braking information to the RFID tag. One or more train systems for controlling train operations; And a command system installed at a remote place to perform wired communication with the line system to receive and process train operation information and transmit variable information such as train line occupancy information and train control information to the line system It is possible to control the train operation precisely and precisely, to monitor and control the train operation in the remote control system installed in the remote place, and to lower the installation, operation and maintenance cost.

SUMMARY OF THE INVENTION It is an object of the present invention to control a train at low cost and high precision by combining a state-of-the-art RFID sensor with an information communication technology of a vehicle-to-terrestrial wired /

The present invention provides a train operation control system for controlling the operation of a train, comprising: an RFID reader for reading RFID tag information recorded on an RFID tag disposed on a railway; A communication unit for transmitting operation information including the RFID tag information to the outside and receiving operation information of another train operating separately from the train; And a train control unit for controlling the traveling speed of the train by analyzing driving information of the other train.

In addition, the train operation control system further includes a wireless repeater or a wired repeater for transmitting and receiving operation information between the train and another train.

In addition, when the train is located in the tunnel, the train information is transmitted / received using a wired repeater.

Also, the medium used by the wireline repeater may be an RCX (Radiax Coaxial cable).

In addition, the traveling speed of the train can be controlled by a moving block system.

In addition, the train controls the traveling speed of the train by using driving information including the RFID tag information and the speed information of the train, so as to stop at a specific position in the stopping station.

In addition, the closer the station is located, the narrower the arrangement interval of the RFID tags.

Further, the RFID reader includes a transmitting antenna and a receiving antenna,

In order to improve the reception ratio of the signal transmitted from the RFID tag, the reception antenna may be disposed apart from the transmission antenna, or may be arranged in a direction different from the direction of the transmission antenna so as to have a different directivity.

In addition, the RFID tag may store information of at least one of a slope of a line, a curvature of a line, a ground condition, and a type of a sleeper.

According to the present invention, a high-precision train can be controlled by incorporating an advanced RFID sensor and a vehicle-to-terrestrial wired / wireless information / communication technology for train control at low cost and high accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing each configuration of a conventional train control system. FIG.
FIG. 2 is a view showing a train passing through a line provided with an RFID tag according to the present invention.
FIG. 3 is a diagram related to train operation in an open space section according to the present invention.
4 and 5 are diagrams related to train operation in an open space and a tunnel section according to the present invention.
6 is a view illustrating an RFID antenna installed on a train according to the present invention.
7 is a view showing each configuration of a train according to the present invention.
FIG. 8 is a diagram showing a relationship between a train speed and a stop position in a case where a stop is performed using a conventional grounding grounding device.
9 is a graph showing the relationship between the train speed and the stop position when the RFID tag is stopped using the RFID tag according to 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 is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

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

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

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

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

FIG. 2 is a view showing a train passing through a line on which an RFID tag according to the present invention is installed, and FIG. 7 is a view showing each configuration of a train according to the present invention.

2, the present train operation control system includes a plurality of trains having an RFID tag 210, an RFID reader 130, and a communication unit installed in the line 200.

The RFID tag 210 includes an antenna (not shown) and an integrated circuit (not shown). The RFID tag 210 records information in an integrated circuit and transmits information to the RFID reader 130 as a reader through an antenna. This information is used to identify the object to which the RFID tag is attached.

The RFID tag 210 used in the present invention is a passive RFID that reads and communicates information of a chip only by the power of the RFID reader 130 and a battery is built in the tag so that the power is used to read information of the chip Semi-passive RFID that uses the power of the reader for communication, and Active RFID that uses the power of the tag to both read and communicate information on the chip.

The RFID tags 210 may be disposed at regular intervals along the line 200. In a section where the train 100 must stop exactly at a specific position such as a stopping station, the RFID tags 210 are arranged more closely . For example, in the middle section between the station and the station, one RFID tag 210 may be installed for each of the three sleepers, but in the case of a section close to the station, the RFID tag 210 may be installed for each sleeper. have. Of course, it is not necessary to dispose the RFID tag 210 along the line 200, nor to place it on a sleeper. In order to grasp the current position of the train 100, the RFID tag 210 may be installed so that only the positional information can be secured using the RFID tag 210.

The RFID tag 210 may store information on the installation location of the RFID tag 210, the inclination of the track, the curvature of the track, the ground condition, and the type of the sleeper. In this specification, a general description of a communication unit such as a memory, a chip, and an antenna in the RFID tag 210 is omitted.

7, the train 100 according to the train operation system includes a communication unit of the on-board control unit 110, the antenna 120, and the communication interface 125, an RFID reader 130, a speed detection unit 140, a travel control unit 150, a braking unit 160, and a basic information storage unit 170.

The on-board control unit 110 controls the various components in the train, and controls the train on the basis of the information read from the RFID reader 130 in particular. More specifically, the on-board control unit receives the position information of the train, the speed of the train input from the speed detection unit 140, and the basic information of the train received from the basic information storage unit 170 among information received from the RFID reader 130 And outputs it to the communication interface 125 for output to the outside. In addition, the control unit 150 outputs a control signal to the operation control unit 150 to reduce the train based on the information and the information provided from another train.

The basic information of the train can include information such as the length of the train, the weight, the type of train such as KTX or Saemaulho, the use of trains such as passenger or cargo, the driving method of the motor or the engine type,

The antenna 120 of the communication unit performs a wireless communication function installed on the train, and serves to provide information calculated by the train to other trains. On the other hand, the communication interface 125 serves to interface the onboard controller 110 and the antenna 120.

The speed detector 140 detects the speed of the train, and the operation controller 150 determines the acceleration and deceleration of the train based on the position information, the speed information, and the basic information of the vehicle. The braking section 160 may be a brake typically installed on a train. Finally, the basic information storage unit 170 stores basic information of the aforementioned train. Basic information can be changed at any time by user operation. For example, the length and purpose of a train can be changed by a user's operation at every train operation.

2, according to an embodiment of the present invention, the first train 100A and the second train 100B can directly communicate with each other through the antenna 120 installed in each of them without passing through the repeater 300 . Of course, information output from the train can be transmitted to a train centralized control apparatus (not shown) through a repeater or the like. More specifically, the following on-board control section 110 of the second train 100B, based on the position information and speed of the preceding first train 100A, position information and speed of the second train, The moving speed of the train can be controlled by the on-board controller so that the moving distance of the train itself can be adjusted by setting the position of the train as the target point of the train and calculating the speed limit curve in consideration of the train braking distance. Such a moving block system divides the station and the station into one section or several sections so as to be suitable for the operation of the train operation, sets the speed stage for each signal display, It is possible to input more trains to the same interval line than the fixed block system of the step speed code transmission method which operates with the pattern.

FIG. 3 is a diagram related to the train operation in the open section of the open space without clogging the front according to the present invention. 1 and Fig. 2 will be mainly described. 3, when the distance between the preceding first train 100A and the succeeding second train 100B is such that the distance between the preceding first train 100A and the following second train 100B can not be covered by a communication unit (not shown) installed on the vehicle, And the second train 100B communicate through the repeater 300. [ In the case of using only a radial coaxial cable for relaying between the first train 100A and the second train 100B, a cable is required to be installed around the line, which causes a great deal of cost. On the contrary, in the open space with low signal interference as in the present invention, a wireless repeater can be installed in place of the radial coaxial cable to provide communication between the trains. The use of such a wireless repeater can significantly reduce the overall system construction cost.

FIG. 4 is a diagram related to train operation in an open space and a tunnel section according to the present invention. The difference from FIG. 3 will be mainly described. As shown in FIG. 4, the preceding first train 100A has passed through the tunnel section, and the trailing second train 100B is before entering the tunnel 1000 section. Generally, radio communication is not smooth due to the waveform characteristics of radio waves and obstacles of terrain. Therefore, in the tunnel section or the quadratic curve section and the emergency section, wired repeating of the radial coaxial cable can be added in addition to the wireless communication to ensure faultless communication between the first train 100A and the second train 100B. As shown in FIG. 4, the first train 100A and the second train 100B communicate with each other through a wired line in a tunnel section and communicate wirelessly outside a tunnel.

FIG. 5 is a diagram related to train operation in an open space and a tunnel section according to the present invention. As shown in FIG. 5, when the trailing second train 100B travels in the tunnel section, the second train 100B communicates with the antenna 350 installed in the tunnel 1000 to transmit and receive signals, Signals transmitted to and received from the antenna 350 are transmitted and received to the outside of the tunnel 1000 through the wired line 400. Thereafter, the signal is transmitted / received to / from the first train through the antenna 300 installed outside the tunnel. Such an operation may occur between the second train 100B and a third train (not shown) that trails the second train.

6 is a view illustrating an RFID antenna installed on a train according to the present invention.

Generally, in the case of high-speed railway, the time required for the RFID reader 130 installed in a train to read the RFID tag 210 is very short. Therefore, the recognition rate of the RFID signal in the high-speed rail can be significantly lowered, and such a low recognition rate adversely affects the calculation of the braking distance of the train.

As shown in FIG. 6, the RFID reader according to the present invention can read the RFID tag signal even in a high-speed railway by enlarging the range of reading the received signal reflected from the RFID tag. In more detail, the RFID reader 130 according to the present invention includes a transmitting antenna 131 and a receiving antenna 133. The direction of the receiving antenna 133 is set differently from the direction of the transmitting antenna 131 in consideration of the traveling speed of the train. The absolute position of the transmitting antenna 131 transmitting a signal to the RFID tag may be different from the absolute position of the receiving antenna 133 receiving the signal because the train is traveling at a high speed. Therefore, considering the distance difference, the direction of the receiving antenna 133 may be turned toward the RFID tag to increase the signal reception rate of the RFID reader. At this time, the direction of the receiving antenna 133 is not necessarily fixed, and the direction of the antenna may be changed according to the speed of the train.

Further, the present invention can be used for stopping a train at an accurate position of a stationary station. For example, when the train enters the station, the train can be stopped at the correct position by using the RFID tag information according to the present invention and the line database information of the on-board control unit instead of the existing branch point signal paper box or correct positioning paper box. Further, in order to control the train more precisely, the closer the RFID tag is to the station, the more closely the RFID tag can be installed. In general section, RFID tag is installed on every sleeping area, but in the section close to the station, the RFID tag can be installed between the sleepers and the sleepers to increase the sensing accuracy.

FIG. 8 is a graph showing a relationship between a train speed and a stop position when the conventional stationary landing gear is used, FIG. 9 is a graph showing a relationship between a train speed and a stop position when the vehicle is stationary using the RFID tag according to the present invention. FIG. As shown in FIG. 8, in the conventional case, since the accuracy is lowered, the speed of the train can not be precisely controlled, and the train can not be accurately stopped at a desired position. In contrast, as shown in FIG. 9, the present invention can improve the ride quality because the jerk rate can be improved because there is no abrupt change in the speed rise period, the fall period, and the constant speed maintenance period of the train.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that many modifications and variations are possible without departing from the scope of the present invention. Accordingly, it is to be understood that the invention encompasses all such changes and modifications as come within the scope of the appended claims.

100: Train
120: antenna
125: Communication interface
130: RFID reader
131: transmitting antenna
133: Antenna for reception
140: Speed detector
150:
160:
170: Basic information storage unit
200: track
210: RFID tag
300: repeater
400: Cable
1000: Tunnel

Claims (9)

1. A train operation control system for controlling the operation of a train, comprising:
An RFID reader for reading RFID tag information recorded on an RFID tag disposed on a track;
A communication unit for transmitting operation information including the RFID tag information to the outside and receiving operation information of another train operating separately from the train; And
And a running control unit for analyzing the running information of the other train to control the running speed of the train. The method according to claim 1,
Wherein the train operation control system further comprises a wireless repeater or a wireline repeater for transmitting and receiving operation information between the train and another train. 3. The method of claim 2,
And when the train is located in the tunnel, the traveling information is transmitted and received using a wireline repeater. The method according to claim 2 or 3,
Wherein the medium used by the wire line repeater is an RCX (Radiax Coaxial cable). The method according to claim 1,
Wherein the traveling speed of the train is controlled by a moving block system. The method according to claim 1,
Wherein the train controls the travel speed of the train using the travel information including the RFID tag information and the speed information of the train so as to stop at a specific position of the stop station. The method according to claim 6,
And the arrangement interval of the RFID tags becomes narrower as they approach the stopping station. The method according to claim 1,
The RFID reader includes a transmitting antenna and a receiving antenna,
The receiving antenna is disposed in a direction different from the direction of the transmitting antenna so as to be disposed apart from the transmitting antenna or to have a different directivity in order to improve the reception ratio of the signal transmitted from the RFID tag. Train Control System Using. The method according to claim 1,
Wherein the RFID tag stores information of at least one of an inclination of a line, a curvature of a line, a ground condition, and a type of a sleeper.

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