KR101414069B1 - AF Track Circuit - Google Patents

AF Track Circuit Download PDF

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Publication number
KR101414069B1
KR101414069B1 KR1020130062320A KR20130062320A KR101414069B1 KR 101414069 B1 KR101414069 B1 KR 101414069B1 KR 1020130062320 A KR1020130062320 A KR 1020130062320A KR 20130062320 A KR20130062320 A KR 20130062320A KR 101414069 B1 KR101414069 B1 KR 101414069B1
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South Korea
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information
train
frequency
transmitter
track
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KR1020130062320A
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Korean (ko)
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최진호
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(주)테크빌
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
    • B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
    • B61L23/16—Track circuits specially adapted for section blocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The present invention relates to an audible frequency (AF) track circuit including: a track circuit line unit formed by adding impedance to a part period of railroad tracks so as to resonate with any one of four audible resonant frequencies; a transmitter separating train service information corresponding to the AF of the track circuit line unit from train service information transferred from outside, generating information on the AF of the track circuit lint unit and the separated train service information, and transmitting the generated information to the track circuit line unit; a transmitter board having the transmitter formed therein; a track relay connected to a predetermined signal device; a relay driving unit supplying an excitation voltage for exciting the track relay to the track relay; a receiver controller controlling the excitation voltage supplying operation of the relay driving unit on the basis of the size of the track signal transferred through the track circuit line unit, wherein the transmitter board includes a frequency selection switch installed therein, the transmitter includes the frequency selection switch installed in the transmitter board, separates train service information corresponding to an AF selected by the frequency selection switch from the train service information received from outside, and generates a track signal including information on the AF selected by the frequency selection switch. Accordingly, one transmitter can be used for four audible resonant frequencies.

Description

가청주파수궤도회로{AF Track Circuit}[0001] The present invention relates to an audio frequency track circuit,

본 발명은 가청주파수궤도회로에 관한 것으로서, 보다 상세하게는 열차선로에 폐색구간을 설정하기 위해 열차선로를 분할하여 전기적으로 절연하고 그 분할된 열차선로에 가청주파수가 공진주파수가 되도록 임피던스가 부가하여 구성되는 궤도회로에 관한 것이다.The present invention relates to an audible frequency track circuit, and more particularly, to an audible frequency track circuit in which a train line is divided and electrically isolated in order to set a block section in a train line, and an impedance is added to the divided train line so that an audible frequency becomes a resonance frequency And more particularly, to a track circuit constructed.

열차의 충돌이나 추돌을 방지하기 위해 1개 이상의 열차가 동시에 진입할 수 없도록 폐색구간을 열차선로에 설정할 필요가 있으며, 이를 위해 열차선로를 분할하여 전기적으로 절연하고 그 분할된 열차선로를 회로의 일부로 사용하여 구성한 궤도회로가 안출되어 사용되고 있다.In order to prevent collision or collision of a train, it is necessary to set a blockage section on a train line so that one or more trains can not enter at the same time. For this purpose, a train line is divided and electrically insulated and the divided train line is part of a circuit The track circuit constituted by the use has been found and used.

궤도회로는 상행선로에 대하여 공진주파수를 달리하는 2종류의 궤도회로가 교대로 구성되고, 하행선로에 대하여 공진주파수를 달리하는 2종류의 궤도회로가 교대로 구성된다(상행선로의 공진주파수와 하행선로의 공진주파수도 다름).The track circuit is composed of two kinds of track circuits alternately having different resonance frequencies with respect to the upcoming track, and two kinds of track circuits having different resonance frequencies with respect to the down track are alternately constituted (the resonance frequency of the up line and the down line The resonant frequency is different.

공진주파수로는 가청주파수(audio Frequency) 즉, 2,040Hz, 2,400Hz, 2,760Hz, 3,120Hz가 사용되고 있다. 이하 설명의 편의를 위해 가청주파수의 공진주파수를 가청공진주파수라고 한다.As the resonance frequency, audio frequencies (2,040 Hz, 2,400 Hz, 2,760 Hz, 3,120 Hz) are used. For convenience of explanation, the resonance frequency of the audible frequency is referred to as an audible resonance frequency.

이와 같이 가청공진주파수를 달리하여 구성된 궤도회로 상호간은 전기적으로 절연된다. As described above, the track circuits formed by varying the audible resonance frequency are electrically insulated from each other.

도5는 종래 가청주파수궤도회로의 기능별 블럭도이고, 도6은 도5에 도시된 송신기의 기능별 블럭도이고, 도7은 도5에 도시된 수신기의 기능별 블럭도이고, 도8은 종래 가청주파수궤도회로의 송신기보드를 도시한 도면이다.5 is a functional block diagram of a conventional audible frequency track circuit, FIG. 6 is a functional block diagram of the transmitter shown in FIG. 5, FIG. 7 is a functional block diagram of the receiver shown in FIG. Fig. 3 is a diagram showing a transmitter board of a track circuit. Fig.

종래의 궤도회로는, 이들 도면에 도시된 바와 같이, 궤도회로선로부(111)와, 궤도회로선로부(111)에 연결된 송신기(120)와, 송신기(120)가 형성되어 있는 송신기보드(114)와, 궤도회로선로부(111)에 연결되어 있는 수신기(130)와, 소정의 신호기와 수신기(130) 사이에 배치된 궤도계전기(112)를 갖고 있다.As shown in these drawings, a conventional track circuit includes a track circuit line portion 111, a transmitter 120 connected to the track circuit line portion 111, a transmitter board 114 on which the transmitter 120 is formed A receiver 130 connected to the track circuit line section 111 and an orbital relay 112 disposed between the predetermined signal transmitter and the receiver 130.

궤도회로선로부(111)는 열차선로를 소정 길이구간으로 분할하고, 분할된 열차선로구간에 4개의 가청공진주파수 중 어느 하나의 주파수에 공진하도록 임피던스(111a)를 부가하여 구성된다.The track circuit line section 111 is constituted by dividing the train line into a predetermined length section and adding an impedance 111a to the divided train line section so as to resonate at any one of the four audible resonance frequencies.

송신기(120)는 궤도점유검출신호를 생성하는 궤도점유검출신호생성부(121)와, 열차운행정보아날로그신호를 생성하는 열차운행정보신호생성부(122)와, 궤도점유검출신호를 반송파로 하여 열차운행정보아날로그신호를 주파수 변조하여 궤도회로선로부(111)로 전송하는 변조부(123)를 갖고 있다.The transmitter 120 includes a trajectory occupancy detection signal generation unit 121 for generating a trajectory occupancy detection signal, a train driving information signal generation unit 122 for generating a train driving information analog signal, And a modulating unit 123 for frequency-modulating the train operation information analog signal and transmitting it to the track circuit line unit 111.

궤도점유검출신호생성부(121)는 발진기와 분주회로 등을 이용하여 궤도회로선로부(111)의 가청공진주파수와 같은 주파수의 궤도점유검출신호를 생성한다.The track occupancy detection signal generation section 121 generates an orbit occupancy detection signal having the same frequency as the audible resonance frequency of the track circuit line section 111 by using an oscillator and a frequency divider circuit or the like.

궤도점유검출신호생성부(121)는 4개의 가청공진주파수별 중 하나에 대한 주파수의 궤도점유검출신호를 생성하도록 구성된다.The trajectory occupancy detection signal generation section 121 is configured to generate the trajectory occupancy detection signal of the frequency for one of the four audible resonance frequencies.

열차운행정보신호생성부(122)는 4개의 가청공진주파수에 대한 소정의 열차운행정보를 모두 포함하는 전체열차운행정보신호를 수령한다.The train running information signal generating unit 122 receives the entire train running information signal including all the train running information for the four audible resonance frequencies.

전체열차운행정보신호는 외부의 열차운행정보전송장치로부터 디지탈신호 형태로 열차운행정보신호생성부(122)에 전달되고, 열차운행정보에는 전방열차와의 운행간격, 해당 열차의 운행속도, 선로의 경사도나 커브 등 열차운행에 필요한 정보가 포함한다.The entire train operation information signal is transmitted from the external train operation information transmission device to the train operation information signal generation unit 122 in the form of a digital signal. The train operation information includes an operation interval with the preceding train, a running speed of the train, Includes information necessary for train operation such as slope and curve.

열차운행정보신호생성부(122)는 미리 설정된 자신의 가청공진주파수에 대한 열차운행정보를 선택적으로 받아들여(주파수식별비트를 이용하거나 미리 설정된 채널에 대한 열차운행정보만을 입력받는 방법 등으로) 공지의 디지탈신호를 아날로그신호로 변환하는 기술을 적용하여 열차운행정보아날로그신호를 생성한다.The train operation information signal generating unit 122 may be configured to receive train operation information for a predetermined audible resonance frequency of the train (for example, using a frequency identification bit or receiving only train operation information for a predetermined channel) And converts the digital signal of the train to an analog signal.

열차운행정보신호생성부(122)는 4개의 가청공진주파수별 중 하나에 대한 주파수의 열차운행정보신호를 생성하도록 구성된다.The train driving information signal generating unit 122 is configured to generate a train driving information signal having a frequency for one of the four audible resonance frequencies.

변조부(123)는 궤도점유검출신호생성부(121)로부터의 궤도점유검출신호를 반송파로 하여 열차운행정보신호를 변조한다.The modulation unit 123 modulates the train operation information signal by using the orbit occupancy detection signal from the trajectory occupancy detection signal generation unit 121 as a carrier wave.

변조부(123)는 4개의 가청공진주파수별 중 하나에 대한 주파수의 열차운행정보신호를 변조하도록 구성된다. The modulator 123 is configured to modulate the train operation information signal of the frequency for one of the four audible resonance frequencies.

이러한 구성을 갖는 변조부(123)는 종래 널리 알려진 바와 같이 신호합성이나 전압주파수변환기 등을 사용하여 구현할 수 있다.The modulation unit 123 having such a configuration can be implemented using signal synthesis, voltage frequency converter, or the like as is well known in the art.

변조부(123)에 의해 변조된 신호는 궤도신호가 되고 동조, 증폭 등의 과정을 거쳐 궤도회로선로부(111)로 전송된다.The signal modulated by the modulator 123 becomes an orbit signal and is transmitted to the orbit circuit line unit 111 through a process such as tuning and amplification.

궤도회로선로부(111)에 전송된 열차운행정보신호는 열차에 설치된 차상안테나를 통해 열차자동운전제어장치(ATC : Automatic Train Control System) 등과 같은 열차운행제어장치로 전달된다.The train operation information signal transmitted to the track circuit line section 111 is transmitted to a train operation control device such as an automatic train control system (ATC) through a vehicle-mounted antenna installed in the train.

송신기보드(114)는 각 가청공진주파수에 대하여 하나씩 마련된다(동일한 가청공진주파수를 처리하는 열차운행정보신호생성부, 궤도점유검출신호생성부 및 변조부에 대하여 하나씩).The transmitter board 114 is provided for each of the audible resonance frequencies (one for the train operating information signal generating unit, the trajectory occupancy detecting signal generating unit, and the modulating unit, which process the same audible resonance frequency).

수신기(130)는 궤도계전기(112)에 여자전압을 공급하는 계전기구동부(131)와, 온도센서(113)에 연결된 온도데이터버퍼(313)와, 계전기구동부(131)의 여자전압공급동작을 제어하는 수신기제어부(132)를 갖고 있다.The receiver 130 includes a relay driver 131 for supplying an excitation voltage to the orbital relay 112, a temperature data buffer 313 connected to the temperature sensor 113, and an excitation- And a receiver control unit 132 for controlling the receiver.

계전기구동부(131)는 수신기제어부(132)로부터의 제어신호에 따라 궤도계전기(112)에 여자(勵磁) 전압을 공급하거나 궤도계전기(112)에 공급되는 여자전압을 차단하도록 동작한다.The relay driving unit 131 operates to supply excitation voltage to the track relay 112 or cut excitation voltage supplied to the orbital relay 112 in accordance with a control signal from the receiver control unit 132. [

수신기제어부(132)는 궤도회로선로부(111)를 통해 전달되는 궤도점유검출신호의 크기에 따라(열차가 궤도회로에 진입하면 차체를 일부로 하는 폐회로가 형성되어 궤도점유검출신호의 크기가 작아짐) 즉, 궤도점유검출신호의 크기가 감소하지 않은 경우에는 궤도계전기에 여자(勵磁) 전압을 공급하기 위한 제어신호를 계전기구동부(131)로 출력하고(녹색등 점등), 궤도점유검출신호의 크기가 감소하는 경우에는 궤도계전기(112)에 공급되는 여자전압을 차단하기 위한 제어신호를 계전기구동부(131)로 출력한다(적색등 점등).The receiver control unit 132 determines whether or not the trajectory occupancy detection signal transmitted through the trajectory circuit line unit 111 is smaller than the trajectory occupancy detection signal when the train enters the trajectory circuit, That is, when the magnitude of the track occupancy detection signal does not decrease, a control signal for supplying excitation voltage to the track relay is output to the relay driving unit 131 (green light, etc.) and the magnitude of the track occupancy detection signal And outputs a control signal for interrupting the excitation voltage supplied to the trajectory relay 112 to the relay driving unit 131 (red light, etc.).

궤도계전기(112)의 여자상태에 따라 궤도회로선로부(111)의 주변에 설치된 신호기(녹색등 또는 적색등)가 동작하고, 이에 따라 궤도회로의 점유상태가 시각적으로 표시된다.(Green lamp or red lamp) provided around the track circuit line section 111 operates according to the excitation state of the orbital relay 112, thereby visually displaying the occupation state of the orbit circuit.

전술한 구성을 갖는 종래의 가청주파수궤도회로는 현장에서 사용되고 있는 것이라고 발명자가 확인해 준 종래기술에 해당한다.The conventional audible frequency track circuit having the above-mentioned configuration corresponds to the conventional technology confirmed by the inventor to be used in the field.

그런데 종래의 가청주파수궤도회로에 따르면, 송신기(120)에서 처리하는 가청공진주파수가 각각 달라 각 송신기(120)를 각각 다른 송신기보드(114)에 형성하여야 하기 때문에 송신기(120)의 제작이 복잡하고 송신기보드(114)의 예비품을 4종류 준비해야 한다는 문제점이 있었다. However, according to the conventional audible frequency track circuit, since the audible resonance frequencies processed by the transmitter 120 are different from each other, each transmitter 120 must be formed in a different transmitter board 114, so that the manufacture of the transmitter 120 is complicated There is a problem that four types of spare parts of the transmitter board 114 must be prepared.

따라서 본 발명의 목적은, 하나의 송신기를 네 개의 가청공진주파수에 대하여 사용할 수 있도록 한 가청주파수궤도회로를 제공하는 것이다.It is therefore an object of the present invention to provide an audio frequency orbit circuit that allows one transmitter to be used for four audible resonance frequencies.

상기 목적은, 본 발명에 따라, 4개의 가청공진주파수 중 어느 하나에 공진하도록 임피던스를 열차선로의 일부구간에 부가하여 형성된 궤도회로선로부와, 외부로부터 전달되는 열차운행정보 중 상기 궤도회로선로부의 가청공진주파수에 대응하는 열차운행정보를 분리하고 상기 궤도회로선로부의 가청공진주파수에 대한 정보와 상기 분리한 열차운행정보를 포함하는 궤도신호를 생성하여 상기 궤도회로선로부에 전송하는 송신기와, 상기 송신기가 형성되어 있는 송신기보드와, 소정의 신호기에 연결된 궤도계전기와, 상기 궤도계전기를 여자(勵磁)하기 위한 여자전압을 상기 궤도계전기에 공급하는 계전기구동부와 상기 궤도회로선로부를 통해 전달되는 궤도신호의 크기에 기초하여 상기 계전기구동부의 여자전압공급동작을 제어하는 수신기제어부를 갖는 수신기를 갖는 가청주파수궤도회로에 있어서, 상기 송신기보드에 설치된 주파수선택스위치를 포함하고; 상기 송신기는 상기 송신기보드에 설치된 주파수선택스위치를 포함하고, 외부로부터 전달되는 열차운행정보 중 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대응하는 열차운행정보를 분리하고 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대한 정보를 포함하는 궤도신호를 생성하는 것을 특징으로 하는 가청주파수궤도회로에 의해 달성된다.According to the present invention, the above-mentioned object can be attained by providing a track circuit line section formed by adding an impedance to a part of a train line so as to resonate with any one of four audible resonance frequencies, A transmitter for separating train running information corresponding to an audible resonance frequency and generating a trajectory signal including information on an audible resonance frequency of the trajectory circuit line section and the separated train running information and transmitting the generated trajectory signal to the track circuit line section; A relay drive unit for supplying an excitation voltage for exciting the orbital relay to the orbital relay; and a control unit for controlling the orbital circuit, A receiver control section for controlling the excitation voltage supplying operation of the relay driving section based on the magnitude of the signal, In the audio frequency track circuits having a receiver with, and a frequency selector switch installed on the transmitter board; Wherein the transmitter includes a frequency selection switch provided on the transmitter board and separates train operation information corresponding to an audible resonance frequency selected by the frequency selection switch among train operation information transmitted from the outside, And generates an orbit signal including information on the resonance frequency.

여기서 궤도신호 생성을 위한 송신기의 회로구성이 간단해 지고 송신기의 부품 특성 저하에 따른 궤도신호의 왜곡을 방지할 수 있도록, 상기 송신기는 외부로부터 전달되는 열차운행정보디지털신호 중 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대응하는 열차운행정보디지털신호를 수신하는 운행정보수신부와, 상기 운행정보수신부에서 수신한 열차운행정보디지털신호에 대응하는 열차운행정보펄스를 생성하고 상기 열차운행정보펄스의 진폭을 "A"라고 할 때 sinA을 소정의 열차운행정보샘플링주기로 연산하여 열차운행정보를 생성하는 운행정보생성부와, 상기 주파수선택스위치에 의해 선택된 가청공진주파수를 "Fs"라고 하고 소정의 반송파샘플링주기를 "Tf"라고 할 때 2 × 3.14 × Fs × Tf를 연산하여 반송주파수정보를 생성하는 반송주파수정보생성부와, 상기 반송주파수정보생성부에서 생성한 반송파주파수정보를 "B"라고 하고 상기 운행정보생성부에서 연산하는 sinA를 "C"라고 할 때 sin(B+C)를 상기 반송파샘플링주기마다 연산하여 변조하는 변조부와, 상기 변조부로부터 출력되는 디지털신호를 아날로그로신호로 변환하는 디지털아날로그변환기를 포함하는 것이 바람직하다.Here, in order to simplify the circuit configuration of the transmitter for generating the trajectory signal and to prevent the distortion of the trajectory signal due to the degradation of the characteristics of the parts of the transmitter, the transmitter transmits the train driving information digital signal, A driving information information receiving unit for receiving a train driving information digital signal corresponding to the selected audible resonance frequency; a driving information generating unit for generating a train driving information pulse corresponding to the train driving information digital signal received by the driving information receiving unit, A traveling information generating unit for calculating sinA at a predetermined train operating information sampling period to generate train driving information when it is assumed to be "A "; and a control unit that sets the audible resonance frequency selected by the frequency selecting switch to" Fs &Quot; Tf "is calculated as 2 x 3.14 x Fs x Tf to generate carrier frequency information (B + C) of the carrier frequency information generated by the carrier frequency information generation unit is denoted by "B" and sinA calculated by the traveling information generation unit is denoted by "C & And a digital-to-analog converter for converting the digital signal output from the modulation unit into an analog signal.

따라서 본 발명에 따르면, 송신기보드에 주파수선택스위치를 설치하는 한편, 외부로부터 전달되는 열차운행정보 중 주파수선택스위치에 의해 선택된 가청공진주파수에 대응하는 열차운행정보를 분리하고 주파수선택스위치에 의해 선택된 가청공진주파수에 대한 정보를 포함하는 궤도신호를 생성하도록 송신기를 구성함으로써 하나의 송신기를 네 개의 가청공진주파수에 대하여 사용할 수 있다. 이에 따라 송신기의 제작이 간단해지고 송신기보드의 예비품을 1종류만 준비하면 된다.Therefore, according to the present invention, a frequency selection switch is provided on the transmitter board, and train operation information corresponding to the audible resonance frequency selected by the frequency selection switch among the train operation information transmitted from the outside is separated, One transmitter can be used for four audible resonant frequencies by configuring the transmitter to generate an orbital signal that includes information about the resonant frequency. Thus, the manufacture of the transmitter is simplified and only one spare part of the transmitter board can be prepared.

도1은 본 발명의 실시예에 따른 가청주파수궤도회로의 기능별 블럭도,
도2는 도1에 도시된 송신기의 기능별 블럭도,
도3은 도1에 도시된 수신기의 기능별 블럭도,
도4는 본 발명의 실시예에 따른 가청주파수궤도회로의 송신기보드를 도시한 도면,
도5는 종래 가청주파수궤도회로의 기능별 블럭도,
도6은 도5에 도시된 송신기의 기능별 블럭도,
도7은 도5에 도시된 수신기의 기능별 블럭도,
도8은 종래 가청주파수궤도회로의 송신기보드를 도시한 도면이다.1 is a functional block diagram of an audible frequency track circuit according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of the transmitter shown in FIG. 1;
3 is a functional block diagram of the receiver shown in FIG. 1,
FIG. 4 illustrates a transmitter board of an audible frequency track circuit according to an embodiment of the present invention. FIG.
5 is a functional block diagram of a conventional audible frequency track circuit,
FIG. 6 is a functional block diagram of the transmitter shown in FIG. 5,
FIG. 7 is a function block diagram of the receiver shown in FIG. 5,
8 is a diagram showing a transmitter board of a conventional audible frequency track circuit.

이하에서, 첨부도면을 참조하여 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명의 실시예에 따른 가청주파수궤도회로의 기능별 블럭도이고, 도2는 도1에 도시된 송신기의 기능별 블럭도이고, 도3은 도1에 도시된 수신기의 기능별 블럭도이고, 도4는 본 발명의 실시예에 따른 가청주파수궤도회로의 송신기보드를 도시한 도면이다.FIG. 1 is a functional block diagram of an audible frequency track circuit according to an embodiment of the present invention. FIG. 2 is a functional block diagram of the transmitter shown in FIG. 1, FIG. 3 is a functional block diagram of the receiver shown in FIG. 4 is a diagram illustrating a transmitter board of an audible frequency track circuit according to an embodiment of the present invention.

본 발명의 실시예에 따른 가청주파수궤도회로는, 이들 도면에 도시된 바와 같이, 궤도회로선로부(11)와, 궤도회로선로부(11)에 연결되어 있는 송신기(20)와, 송신기(20)가 형성되어 있는 송신기보드(14)와, 송신기보드(14)에 설치된 주파수선택스위치(15)와, 궤도회로선로부(11)에 연결되어 있는 수신기(30)와, 소정의 신호기와 수신기(30) 사이에 배치된 궤도계전기(12)를 갖고 있다.As shown in these drawings, the audio frequency orbit circuit according to the embodiment of the present invention includes a track circuit line portion 11, a transmitter 20 connected to the track circuit line portion 11, a transmitter 20 A frequency selector switch 15 provided on the transmitter board 14, a receiver 30 connected to the track circuit line unit 11, a predetermined signal transmitter and receiver 30, which are arranged in parallel with each other.

궤도회로선로부(11)는 열차선로를 소정 길이구간으로 분할하고, 분할된 열차선로구간에 4개의 가청공진주파수 중 어느 하나의 주파수에 공진하도록 임피던스(11a)를 부가하여 구성된다.The track circuit line section 11 is constituted by dividing the train line into a predetermined length section and adding an impedance 11a to the divided train line section so as to resonate at any one of the four audible resonance frequencies.

주파수선택스위치(15)는 DIP스위치 등을 사용하여 구현할 수 있다.The frequency selection switch 15 can be implemented using a DIP switch or the like.

송신기(20)는 주파수선택스위치(15)에 연결된 운행정보수신부(24) 및 운행정보생성부(22)와, 운행정보수신부(24)와 운행정보생성부(22)에 연결된 변조부(23)와, 변조부(23)에 연결된 디지털아날로그변환기(25)를 갖고 있다.The transmitter 20 includes a traveling information receiving unit 24 and a traveling information generating unit 22 connected to the frequency selection switch 15 and a modulation unit 23 connected to the traveling information receiving unit 24 and the traveling information generating unit 22. [ And a digital-to-analog converter (25) connected to the modulator (23).

운행정보수신부(24)는 외부로부터 전달되는 열차운행정보디지털신호 중 주파수선택스위치(15)에 의해 선택된 가청공진주파수에 대응하는 열차운행정보디지털신호를 수신한다.The travel information receiving unit 24 receives train operation information digital signals corresponding to the audible resonance frequencies selected by the frequency selection switch 15 among train operation information digital signals transmitted from the outside.

운행정보수신부(24)는 DIP스위치의 조작상태에 따라 즉, DIP스위치1, DIP스위치2 및 DIP스위치3이 온상태로 조작되고 DIP스위치4가 오프상태로 조작된 경우 2,040Hz가 선택된 것으로 판단할 수 있다. When the DIP switch 1, the DIP switch 2 and the DIP switch 3 are operated in the ON state and the DIP switch 4 is operated in the OFF state according to the operation state of the DIP switch, the travel information receiver 24 judges that 2,040 Hz is selected .

그리고 운행정보수신부(24)는 주파수식별비트를 이용하거나 채널과 가청공진주파수 사이의 대응테이블을 이용하는 방법 등으로 주파수선택스위치(15)에 의해 선택된 가청공진주파수에 대응하는 열차운행정보디지털신호를 수신하도록 구성할 수 있다.The driving information receiving unit 24 receives the train driving information digital signal corresponding to the audible resonance frequency selected by the frequency selection switch 15 by using the frequency identification bit or using a correspondence table between the channel and the audible resonance frequency .

운행정보생성부(22)는 다음과 같은 방법으로 열차운행정보를 생성한다.The driving information generating unit 22 generates train driving information in the following manner.

먼저 운행정보수신부(24)에서 수신한 열차운행정보디지털신호에 대응하는 열차운행정보펄스를 생성한다.First, a train information pulse corresponding to the train operation information digital signal received by the train information reception unit 24 is generated.

다음에 열차운행정보펄스의 진폭을 "A"라고 할 때 sinA을 소정의 열차운행정보샘플링주기로 연산하여 열차운행정보를 생성한다. 여기서 열차운행정보샘플링주기는 sinA를 복원할 수 있도록 선택된다. 시험결과에 따르면 열차운행정보샘플링주기는 148us ~ 152us정도가 바람직하다.Next, when the amplitude of the train running information pulse is "A ", the train running information is generated by calculating sinA at a predetermined train running information sampling period. Here, the train operation information sampling period is selected to restore sinA. According to the test result, the sampling period of train operation information is preferably about 148us to 152us.

반송주파수정보생성부(21)는 2 × 3.14 × Fs × Tf를 연산하여 반송주파수정보를 생성한다. 여기서 Fs는 주파수선택스위치(15)에 의해 선택된 가청공진주파수를 의미하고, Tf는 소정의 반송파샘플링주기를 의미한다. 반송파샘플링주기 Tf는 가청공진주파수를 복원할 수 있도록 선택된다. 시험결과에 따르면 반송파샘플링주기는 10us ~ 20us정도가 바람직하다.The carrier frequency information generating section 21 calculates 2 × 3.14 × Fs × Tf to generate carrier frequency information. Here, Fs denotes an audible resonance frequency selected by the frequency selection switch 15, and Tf denotes a predetermined carrier sampling period. The carrier sampling period Tf is selected to restore the audible resonance frequency. According to the test results, the carrier sampling period is preferably 10us to 20us.

반송주파수정보생성부(21)는 DIP스위치의 조작상태에 따라 즉, DIP스위치1, DIP스위치2 및 DIP스위치3이 온상태로 조작되고 DIP스위치4가 오프상태로 조작된 경우 2,040Hz가 선택된 것으로 판단할 수 있다.If the DIP switch 1, the DIP switch 2, and the DIP switch 3 are operated in the ON state and the DIP switch 4 is operated in the OFF state, the carrier frequency information generating section 21 selects 2,040 Hz in accordance with the operation state of the DIP switch It can be judged.

변조부(23)는 sin(B+C)를 반송파샘플링주기마다 연산하여 변조한다. 여기서 "B"는 반송주파수정보생성부(21)에서 생성한 반송파주파수정보를 의미하고 "C"는 운행정보생성부에서 연산하는 sinA를 의미한다.The modulator 23 calculates sin (B + C) every carrier sampling period and modulates it. Here, "B" means the carrier frequency information generated by the carrier frequency information generating section 21 and "C" means sinA calculated by the travel information generating section.

디지털아날로그변환기(25)는 변조부(23)로부터 출력되는 디지털신호를 아날로그로신호로 변환한다.The digital-to-analog converter 25 converts the digital signal output from the modulator 23 into an analog signal.

디지털아날로그변환기(25)의 출력은 궤도신호가 되고 필터링, 증폭 등의 과정을 거쳐 궤도회로선로부(11)로 전송될 수 있다.The output of the digital-to-analog converter 25 becomes a trajectory signal and can be transmitted to the track circuit line section 11 through a process such as filtering and amplification.

궤도회로선로부(11)에 전송된 열차운행정보신호는 열차에 설치된 차상안테나를 통해 열차자동운전제어장치(ATC : Automatic Train Control System) 등과 같은 열차운행제어장치로 전달된다. The train operation information signal transmitted to the track circuit line section 11 is transmitted to a train operation control device such as an automatic train control system (ATC) through a vehicle-mounted antenna installed in the train.

수신기(30)는 궤도계전기(12)에 여자전압을 공급하는 계전기구동부(31)와, 계전기구동부(31)의 여자전압공급동작을 제어하는 수신기제어부(32)를 갖고 있다.The receiver 30 has a relay drive unit 31 for supplying an excitation voltage to the track relay 12 and a receiver control unit 32 for controlling excitation voltage supply operation of the relay drive unit 31. [

계전기구동부(31)는 수신기제어부(32)로부터의 제어신호에 따라 궤도계전기(12)에 여자(勵磁) 전압을 공급하거나 궤도계전기(12)에 공급되는 여자전압을 차단하도록 동작한다.The relay drive unit 31 operates to supply excitation voltage to the track relay 12 or cut excitation voltage supplied to the track relay 12 in accordance with a control signal from the receiver control unit 32. [

수신기제어부(32)는 궤도회로선로부(11)를 통해 전달되는 궤도점유검출신호의 크기에 따라(열차가 궤도회로에 진입하면 차체를 일부로 하는 폐회로가 형성되어 궤도점유검출신호의 크기가 작아짐) 즉, 궤도점유검출신호의 크기가 감소하지 않은 경우에는 궤도계전기에 여자(勵磁) 전압을 공급하기 위한 제어신호를 계전기구동부(31)로 출력하고(녹색등 점등), 궤도점유검출신호의 크기가 감소하는 경우에는 궤도계전기(12)에 공급되는 여자전압을 차단하기 위한 제어신호를 계전기구동부(31)로 출력한다(적색등 점등).The receiver control unit 32 controls the amount of the track occupancy detection signal transmitted from the track circuit line unit 11 according to the size of the track occupancy detection signal (when the train enters the track circuit, a closed circuit is formed as a part of the vehicle body, That is, when the magnitude of the track occupancy detection signal is not decreased, a control signal for supplying excitation voltage to the orbital relay is outputted to the relay driving unit 31 (green light, etc.) and the magnitude of the track occupancy detection signal (Red light, etc.) is output to the relay driving part 31. The control signal for turning off the excitation voltage supplied to the track relay 12 is outputted to the relay driving part 31. [

궤도계전기(112)의 여자상태에 따라 궤도회로선로부(11)의 주변에 설치된 신호기(녹색등 또는 적색등)가 동작하고, 이에 따라 궤도회로의 점유상태가 시각적으로 표시된다.A signal circuit (green light or red light) provided around the track circuit line section 11 operates in accordance with the excitation state of the track relay 112, thereby visually displaying the occupation state of the track circuit.

상술한 바와 같이 본 발명의 실시예에 따르면, 송신기보드(14)에 주파수선택스위치(15)를 설치하는 한편, 외부로부터 전달되는 열차운행정보 중 주파수선택스위치(15)에 의해 선택된 가청공진주파수에 대응하는 열차운행정보를 분리하고 주파수선택스위치(15)에 의해 선택된 가청공진주파수에 대한 정보를 포함하는 궤도신호를 생성하도록 송신기(20)를 구성함으로써 하나의 송신기(20)를 네 개의 가청공진주파수에 대하여 사용할 수 있게 된다. 이에 따라 송신기(20)의 제작이 간단해지고 송신기보드(14)의 예비품을 1종류만 준비하면 된다.As described above, according to the embodiment of the present invention, the frequency selection switch 15 is provided on the transmitter board 14, and the frequency of the audible resonance frequency selected by the frequency selection switch 15 By configuring the transmitter 20 to separate the corresponding train operating information and generate a trajectory signal containing information on the audible resonance frequency selected by the frequency selection switch 15, one transmitter 20 can be configured with four audible resonance frequencies As shown in FIG. Accordingly, the manufacture of the transmitter 20 is simplified, and only one spare part of the transmitter board 14 is prepared.

그리고 운행정보수신부(24)에서 수신한 열차운행정보디지털신호에 대응하는 열차운행정보펄스를 생성하고 열차운행정보펄스의 진폭을 "A"라고 할 때 sinA을 소정의 열차운행정보샘플링주기로 연산하여 열차운행정보를 생성하는 운행정보생성부(22)와, 주파수선택스위치(15)에 의해 선택된 가청공진주파수를 "Fs"라고 하고 소정의 반송파샘플링주기를 "Tf"라고 할 때 2 × 3.14 × Fs × Tf를 연산하여 반송주파수정보를 생성하는 반송주파수정보생성부(21)와, 반송주파수정보생성부(21)에서 생성한 반송파주파수정보를 "B"라고 하고 운행정보생성부(22)에서 연산하는 sinA를 "C"라고 할 때 sin(B+C)를 변조하는 변조부(23)와, 변조부(23)로부터 출력되는 디지털신호를 아날로그로신호로 변환하는 디지털아날로그변환기(25)를 포함하도록 수신기(30)를 구성하여 디지탈신호처리방식으로 궤도신호를 생성함으로써, 궤도신호 생성을 위한 송신기(20)의 회로구성이 간단해 지고 송신기(20)의 부품특성 저하에 따른 궤도신호의 왜곡을 방지할 수 있게 된다.When the amplitude of the train driving information pulse is "A ", sinA is calculated at a predetermined train driving information sampling period to generate a train driving information pulse corresponding to the train driving information digital signal received by the driving information receiving unit 24, A traveling information generating unit 22 for generating driving information and a driving frequency calculating unit 21 for calculating a traveling frequency of the traveling wave by 2 x 3.14 x Fs x when the audible resonance frequency selected by the frequency selecting switch 15 is "Fs" and the predetermined carrier sampling period is "Tf" A carrier frequency information generation section 21 for calculating carrier frequency information Tf and generating carrier frequency information; carrier frequency information generated by carrier frequency information generation section 21 as "B" a modulation section 23 for modulating sin (B + C) when sinA is "C", and a digital-analog converter 25 for converting the digital signal outputted from the modulating section 23 into an analog signal A receiver (30) By generating a trajectory signal by Lee way, a simple circuit configuration of the transmitter 20 for the track signal is generated by it is possible to prevent the distortion of the trajectory signal according to the characteristic deterioration of the transmitter part (20).

11, 111 : 궤도회로선로부 12, 112 : 궤도계전기
14, 114 : 송신기보드 15 : 주파수선택스위치
20, 120 : 송신기 21 : 반송주파수정보생성부
22 : 속도정보생성부 23, 123 : 변조부
24 : 속도정보수신부 25 : 디지털아날로그변환기
30, 130 : 수신기 31, 131 : 계전기구동부
32, 132 : 수신기제어부 121 : 궤도점유검출신호생성부
122 : 열차운행정보신호생성부11, 111: Track circuit section 12, 112: Track relay
14, 114: Transmitter board 15: Frequency selection switch
20, 120: Transmitter 21: Carrier frequency information generating section
22: speed information generator 23, 123:
24: speed information receiving unit 25: digital-to-analog converter
30, 130: Receiver 31, 131: Relay driver
32, 132: receiver control unit 121: track occupancy detection signal generation unit
122: train operation information signal generating section

Claims (2)

4개의 가청공진주파수 중 어느 하나에 공진하도록 임피던스를 열차선로의 일부구간에 부가하여 형성된 궤도회로선로부와, 외부로부터 전달되는 전체열차운행정보 중 상기 궤도회로선로부의 가청공진주파수에 대응하는 열차운행정보를 분리하고 상기 궤도회로선로부의 가청공진주파수에 대한 정보와 상기 분리한 열차운행정보를 포함하는 궤도신호를 생성하여 상기 궤도회로선로부에 전송하는 송신기와, 상기 송신기가 형성되어 있는 송신기보드와, 소정의 신호기에 연결된 궤도계전기와, 상기 궤도계전기를 여자(勵磁)하기 위한 여자전압을 상기 궤도계전기에 공급하는 계전기구동부와 상기 궤도회로선로부를 통해 전달되는 궤도신호의 크기에 기초하여 상기 계전기구동부의 여자전압공급동작을 제어하는 수신기제어부를 갖는 수신기를 갖는 가청주파수궤도회로에 있어서,
상기 송신기보드에 설치된 주파수선택스위치를 포함하고;
상기 송신기는 외부로부터 전달되는 열차운행정보 중 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대응하는 열차운행정보를 분리하고 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대한 정보를 포함하는 궤도신호를 생성하는 것을 특징으로 하는 가청주파수궤도회로.A track circuit line section formed by adding an impedance to a section of the train line so as to resonate with any one of the four audible resonance frequencies and a train line section corresponding to an audible resonance frequency of the track circuit line section among all train operation information transmitted from the outside A transmitter for separating the information and generating an orbit signal including information on an audible resonance frequency of the orbit circuit line section and the separated train operation information and transmitting the generated orbit signal to the track circuit line section; An orbital relay connected to a predetermined signal, a relay driver for supplying an excitation voltage for exciting the orbital relay to the orbital relay, and a relay driver for driving the relay based on the magnitude of the orbital signal transmitted through the orbital circuit line, A receiver having a receiver control section for controlling excitation voltage supply operation of the drive section In the frequency track circuits,
A frequency selection switch provided on the transmitter board;
The transmitter separates train operation information corresponding to an audible resonance frequency selected by the frequency selection switch among train operation information transmitted from the outside and generates a trajectory signal including information on an audible resonance frequency selected by the frequency selection switch Wherein the audio frequency orbit circuit comprises: 제1항에 있어서,
상기 송신기는 외부로부터 전달되는 열차운행정보디지털신호 중 상기 주파수선택스위치에 의해 선택된 가청공진주파수에 대응하는 열차운행정보디지털신호를 수신하는 운행정보수신부와, 상기 운행정보수신부에서 수신한 열차운행정보디지털신호에 대응하는 열차운행정보펄스를 생성하고 상기 열차운행정보펄스의 진폭을 "A"라고 할 때 sinA을 소정의 열차운행정보샘플링주기로 연산하여 열차운행정보를 생성하는 운행정보생성부와, 상기 주파수선택스위치에 의해 선택된 가청공진주파수를 "Fs"라고 하고 소정의 반송파샘플링주기를 "Tf"라고 할 때 2 × 3.14 × Fs × Tf를 연산하여 반송주파수정보를 생성하는 반송주파수정보생성부와, 상기 반송주파수정보생성부에서 생성한 반송파주파수정보를 "B"라고 하고 상기 운행정보생성부에서 연산하는 sinA를 "C"라고 할 때 sin(B+C)를 상기 반송파샘플링주기마다 연산하여 변조하는 변조부와, 상기 변조부로부터 출력되는 디지털신호를 아날로그로신호로 변환하는 디지털아날로그변환기를 포함하는 것을 특징으로 하는 가청주파수궤도회로.The method according to claim 1,
The transmitter includes a driving information receiver for receiving a train operation information digital signal corresponding to an audible resonance frequency selected by the frequency selection switch among train operation information digital signals transmitted from an external source, A train information generating section for generating train operating information by generating a train running information pulse corresponding to the train driving information pulse and calculating the sinA at a predetermined train running information sampling period when the amplitude of the train running information pulse is "A" A carrier frequency information generation section for calculating carrier frequency information by calculating 2 × 3.14 × Fs × Tf when the audible resonance frequency selected by the selection switch is "Fs" and the predetermined carrier sampling period is "Tf" Carrier frequency information generated by the carrier frequency information generation unit is "B" and sinA calculated by the traveling information generation unit is " And a digital-to-analog converter for converting the digital signal output from the modulating unit into an analog signal, wherein the modulating unit modulates sin (B + C) for each of the carrier sampling periods, Audible frequency orbit circuit.
KR1020130062320A 2013-05-31 2013-05-31 AF Track Circuit KR101414069B1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR101773027B1 (en) 2015-04-16 2017-08-31 (주)티엘씨테크놀로지 Train position detection tag system capable of transmitting ambient condition information of railways and the method thereof

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Publication number Priority date Publication date Assignee Title
KR100277459B1 (en) 1998-02-04 2001-01-15 이종수 Track circuit receiver
JP2004274815A (en) 2003-03-05 2004-09-30 Sumitomonacco Materials Handling Co Ltd Method and apparatus for cutting off dark current of battery-powered vehicle
KR100669225B1 (en) 2005-04-14 2007-01-15 신우이.엔.지 주식회사 AF Track Circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100277459B1 (en) 1998-02-04 2001-01-15 이종수 Track circuit receiver
JP2004274815A (en) 2003-03-05 2004-09-30 Sumitomonacco Materials Handling Co Ltd Method and apparatus for cutting off dark current of battery-powered vehicle
KR100669225B1 (en) 2005-04-14 2007-01-15 신우이.엔.지 주식회사 AF Track Circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101773027B1 (en) 2015-04-16 2017-08-31 (주)티엘씨테크놀로지 Train position detection tag system capable of transmitting ambient condition information of railways and the method thereof

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