KR20050087258A - Serial communication interface based train course control system - Google Patents

Serial communication interface based train course control system Download PDF

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KR20050087258A
KR20050087258A KR1020040012972A KR20040012972A KR20050087258A KR 20050087258 A KR20050087258 A KR 20050087258A KR 1020040012972 A KR1020040012972 A KR 1020040012972A KR 20040012972 A KR20040012972 A KR 20040012972A KR 20050087258 A KR20050087258 A KR 20050087258A
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data
train
data transmission
cdts
serial
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KR100607123B1 (en
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신덕호
이종우
이재호
김종기
이영훈
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한국철도기술연구원
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    • 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
    • B61L27/70—Details of trackside communication
    • 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
    • B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
    • B61L27/53—Trackside diagnosis or maintenance, e.g. software upgrades for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2205/00—Communication or navigation systems for railway traffic

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

본 발명은 열차진로제어분야의 핵심장치인 열차 집중제어(CTC : Centralized Traffic Control)장치와 연동장치의 인터페이스 방법을 최적화하여 열차 진로 제어 인프라 전체의 안전성과 신뢰성을 향상시키기 위한 인터페이스 방법에 관한 것이다. The present invention relates to an interface method for improving the safety and reliability of the entire train path control infrastructure by optimizing the interface method of the centralized traffic control (CTC) device and the interlocking device, which are core devices in the field of train path control.

본 발명은 열차 진로 제어시스템에 있어서, 중앙데이터전송장치(CDTS)와 전자연동장치간의 직렬통신에 의한 인터페이스를 구성하고, 전자연동장치는 직렬데이터 통신포트를 통해 입력되는 중앙데이터 전송시스템(CDTS)의 제어데이터 수신 및 현장 설비기기로부터 수신된 감시데이터를 직렬데이터 통신포트를 통해 중앙데이터전송시스템(CDTS)으로 전송하기 위한 데이터전송수단을 포함하도록 하는 것을 기술적특징으로 하는 것으로, 중앙데이터전송장치(CDTS)와 전자연동장치간의 직렬데이터를 송수신하기 위한 지역데이터전송장치(LDTS)를 시스템 구성에서 제외하여 시스템을 간소화시키고, 불필요한 시스템 구성요소에 의한 장치의 물리적 고장률을 줄일 수 있도록 하는 것이다.The present invention relates to a train route control system, comprising an interface by serial communication between a central data transmission device (CDTS) and an electronic interlock device, wherein the electronic interlock device is input through a serial data communication port (CDTS). It is a technical feature to include a data transmission means for receiving the control data of the transmission and monitoring data received from the field equipment to the central data transmission system (CDTS) through the serial data communication port, By eliminating the local data transmission device (LDTS) for transmitting and receiving serial data between the CDTS) and the electronic interlocking device from the system configuration, the system can be simplified and the physical failure rate of the device by unnecessary system components can be reduced.

Description

직렬통신 인터페이스 방식 열차 진로 제어시스템{Serial communication interface based train course control system}Serial communication interface based train course control system

본 발명은 열차진로제어분야의 핵심장치인 열차 집중제어(CTC : Centralized Traffic Control)장치와 연동장치의 인터페이스 방법을 최적화하여 열차 진로 제어 인프라 전체의 안전성과 신뢰성을 향상시키기 위한 인터페이스 방법에 관한 것이다. The present invention relates to an interface method for improving the safety and reliability of the entire train path control infrastructure by optimizing the interface method of the centralized traffic control (CTC) device and the interlocking device, which are core devices in the field of train path control.

열차진로 제어시스템은, 중앙의 사령설비에서 각 개별역마다 구성된 단위역 설비를 통해 현장신호설비를 중앙 제어하는 시스템으로 구성되며, 현재는 경부선, 호남선 등 각 노선 그룹별로 중앙제어 사령을 두고, 해당 노선 각 역마다 단위역 설비를 구성하여 중앙제어가 이루어지고 있다. The train route control system consists of a system that centrally controls on-site signal facilities through a central station facility configured for each individual station, and currently has a central control command for each route group such as Gyeongbu Line and Honam Line. Central station is controlled by constructing unit station facilities at each station.

도 1은 열차 진로제어 시스템을 나타낸 블록도이다. 1 is a block diagram showing a train path control system.

각 단위역 설비를 제어하기 위한 중앙열차제어(CTC) 장치는 중앙사령설비로 개별역의 신호기기 상태를 감시하고 열차의 진로를 취급하기 위한 데이터를 전송하는 중앙데이터 전송시스템(CDTS)이 구성되며, 각 역마다의 단위역설비로 중앙데이터 전송시스템(CDTS)로부터 수신되는 제어 데이터(CTC 사령)를 전기연동장치로 전달하는 지역데이터전송장치(LDTS)가 구성된다. The central train control (CTC) device for each unit station facility is a central command facility, which consists of a central data transmission system (CDTS) that monitors the status of signaling devices at individual stations and transmits data for handling train routes. In addition, a regional data transmission device (LDTS) for delivering control data (CTC command) received from the central data transmission system (CDTS) to the electric interlocking device is provided as a unit station facility for each station.

각 역마다 단위역 설비로 운영자 콘솔, 선로전환기, 신호기, 폐색장치 등 각 개별역의 신호기기(현장 신호설비)를 제어하기 위한 전기연동장치가 구성되며, 전기연동장치는 지역데이터 전송장치(LDTS)를 통해 중앙사령설비와의 데이터를 주고받는다. Each station is equipped with an electric interlocking device to control the signaling devices (on-site signaling equipment) of each individual station such as an operator console, a line changer, a signaling device, and an occlusion device as a unit station facility, and the interlocking device is a local data transmission device (LDTS). Send and receive data with the central command facility.

열차의 위치를 궤도회로로 입력받아, 선로전환기와 신호기를 통해 열차의 진로를 제어하는 연동장치는 비교적 높은 신뢰성이 입증된 신호용계전기를 사용한 아날로그 시퀀스 논리회로로 구현되었다.The interlock system that receives the train's position into the track circuit and controls the course of the train through the track changer and the signal is implemented with an analog sequence logic circuit using a signal relay with relatively high reliability.

이러한 기존의 구성을 전기연동장치라고 하며, 전기연동장치를 중앙 사령에서 제어 및 감시하기 위해 병렬접점으로 인터페이스하는 지역데이터전송장치(LDTS)가 필요하게 되었다. This existing configuration is called an electro-interlocking device, and a local data transmission device (LDTS) that interfaces with parallel contacts is required to control and monitor the electro-linking device at a central command.

지역데이터전송장치(LDTS)는 단위역설비로써, 열차집중제어(CTC)장치의 중앙데이터전송장치(CDTS)와 연동관련데이터를 직렬통신으로 인터페이스 하며, 전기연동장치와는 계전기접점으로 병렬통신한다. The local data transmission device (LDTS) is a unit station facility, which interfaces with the central data transmission device (CDTS) of the train intensive control (CTC) device through serial communication, and communicates with the interlocking device in parallel by relay contact. .

사령의 진로취급명령을 전기연동장치로 전달하기 위해서는 사령의 컴퓨터가 중앙데이터전송장치(CDTS)를 통해 역마다 설치된 지역데이터전송장치(LDTS)에게 직렬통신으로 데이터를 전달하면, 각각의 지역데이터전송장치(LDTS)는 전기연동장치로 병렬데이터를 접점을 통해 전달한다.In order to transfer the command of handling the command of the command to the electric interlocking device, the computer of the command sends data through serial communication to the local data transmission device (LDTS) installed at each station through the central data transmission device (CDTS). The device (LDTS) transmits parallel data through the contact point to the electro-interlocking device.

이와 같이 전달된 데이터를 계전기 조직으로 구성된 전기연동장치의 시퀀스회로에 계전기 접점조건으로 삽입하여, 입력된 데이터에 따른 계전기 로직변환으로 명령을 수행한다.The data transmitted as described above is inserted into the relay circuit as a relay contact condition in the sequence circuit of the electric interlocking device composed of the relay structure, and the command is executed by the relay logic conversion according to the input data.

명령의 수행에 의해 변경된 현장신호설비 기기들의 상태는 전기연동장치에서 사령의 열차집중제어(CTC)장치로 반대의 과정으로 전송된다.The status of on-site signaling equipment changed by the execution of the command is transmitted from the interlocking device to the command train control system (CTC) in the reverse direction.

도 2는 열차의 진로를 제어하기 위한 핵심장치인 열차집중제어장치(CTC)와 전기연동장치의 통신 연결구조를 나타낸다. Figure 2 shows the communication connection structure of the train central control device (CTC) and the electro-interlocking device which is a key device for controlling the course of the train.

열자집중제어(CTC)장치와 전기연동장치가 별도의 시스템으로 개발됨에 따라 도 2에서와 같이 열차집중제어장치에서 전기연동장치로 전송되는 데이터의 형태가 메모리의 데이터??직렬데이터(D1)??병렬데이터(D2)??버스데이터(D3)로 변환된다.As the CTC device and the electric interlock device are developed as separate systems, as shown in FIG. 2, the data transmitted from the train concentration control device to the electric interlock device is the data of the memory? Parallel data D2 is converted to bus data D3.

또한 전기연동장치에서 열차집중제어(CTC)장치로 전송되는 데이터는 버스데이터(D3)??병렬데이터(D2)??직렬데이터(D1)??메모리의 데이터로 변환된다. In addition, the data transmitted from the electric interlocking device to the train concentration control (CTC) device is converted into data in the bus data (D3) ?? parallel data (D2) ?? serial data (D1) ?? memory.

도 2에서 직렬데이터(D1)는 대칭직렬통신(Balanced Serial Communication RS422)에 의한 데이터이며, 병렬데이터(D2)는 직류24V를 사용한 계전기 스위치데이터, 그리고 버스 데이터(D3)는 VME 또는 ISA의 시스템 버스신호이다. In FIG. 2, serial data D1 is data based on balanced serial communication RS422, parallel data D2 is relay switch data using DC 24V, and bus data D3 is a system bus of VME or ISA. It is a signal.

여기서, 운영자의 보다 편리한 운영환경지향과 통신기반 내장형시스템의 도입으로 인해 전기연동장치는 결함허용구조의 내장형 시스템인 전자 연동장치로 교체되고 있다. Here, due to the operator's more convenient operating environment orientation and the introduction of a communication-based embedded system, the electro-interlocking device is being replaced with an electronic interlock device that is a built-in system with a fault-tolerant structure.

따라서 전자연동장치의 버스데이터(D3)를 직렬데이터로 변환하면, 원거리의 데이터 전송을 위한 직렬데이터형태를 제외한 병렬데이터로의 변환과정이 무의미하게 되어, 이와 같은 전자연동장치인 경우 사실상 중앙데이터전송장치(CDTS)의 데이터를 전달하기 위하여 병렬데이터 변환을 위한 지역데이터전송장치(LDTS)가 불필요해진다. Therefore, when converting the bus data D3 of the electronic interlocking device into serial data, the conversion process to parallel data except for the serial data type for remote data transmission becomes meaningless. In order to transfer the data of the device CDTS, a local data transmission device LDTS for parallel data conversion is unnecessary.

그러나, 이와 같이 전자연동장치가 디지털 장치화 되었음에도 단위역설비로 지역데이터전송장치(LDTS)와 전자연동장치의 인터페이스는 전기연동장치와 동일하게 접점구성의 병렬테이터 통신으로 구현되고 있다.However, even though the electronic interlocking device is digitalized as described above, the interface between the local data transmission device (LDTS) and the electronic interlocking device is implemented as parallel data communication with a contact structure as the electric interlocking device.

따라서 이와 같은 시스템에 있어서, 지역데이터전송장치(LDTS)에 의해 생성되는 메시지의 오류에 의해 전체시스템중 핵심장치인 전자연동장치로의 오류확산이 발생한다. Therefore, in such a system, error diffusion to the electronic interlocking device, which is a core device of the entire system, occurs due to an error of a message generated by the LDTS.

본 발명에서는 상기와 같은 열차진로제어시스템에 있어서, 현장신호설비와의 데이터를 송수신하는 연동장치를 전자연동장치로 구성하고, 이에 따라 중앙데이터전송장치(CDTS)와 전자연동장치간의 직렬통신에 의한 인터페이스를 구성하도록 하므로써, 중앙데이터전송장치(CDTS)와 전자연동장치간의 직렬데이터를 송수신하기 위한 지역데이터전송장치(LDTS)를 시스템 구성에서 제외하여 시스템을 간소화시키고, 불필요한 시스템 구성요소에 의한 장치의 물리적 고장률을 줄일 수 있도록 한 것이다. In the present invention, in the train path control system as described above, an interlocking device for transmitting and receiving data to and from the field signal facility is configured as an electronic interlocking device, and accordingly, serial communication between the central data transmission device (CDTS) and the electronic interlocking device is performed. By configuring the interface, it simplifies the system by excluding the local data transmission device (LDTS) for transmitting and receiving serial data between the central data transmission device (CDTS) and the electronic interlocking device from the system configuration. This is to reduce the physical failure rate.

본 발명 직렬통신 인터페이스 방식 열차 진로 제어시스템은, The present invention serial communication interface train route control system,

각 단위역 설비로 현장설비와의 데이터 통신을 수행하는 전자연동장치를 통해 원격의 중앙사령의 열차집중제어(CTC)장치에서 현장 설비기기의 상태를 감시하고 열차의 진로를 취급하는 열차 진로 제어시스템에 있어서,Train track control system that monitors the status of on-site equipment and handles the course of trains in remote centralized train control system (CTC) through an electronic interlocking device that performs data communication with on-site equipment to each station equipment. To

전자연동장치의 직렬데이터 통신포트를 이용하여 개별역의 신호기기 상태를 감시하고, 열차의 진로를 취급하기 위한 데이터를 송수신하기 위한 열차집중제어(CTC) 장치내의 중앙데이터전송시스템(CDTS)과 전자연동장치가 직렬통신 인터페이스를 구성하고,  The central data transmission system (CDTS) and the electronics in the centralized train control system (CTC) are used to monitor the status of signaling devices at individual stations and to transmit and receive data for handling the course of the train using the serial data communication port of the electronic interlocking device. Interlocking devices form a serial communication interface,

전자연동장치는 직렬데이터 통신포트를 통해 입력되는 중앙데이터 전송시스템(CDTS)의 제어데이터의 수신 및 현장 설비기기로부터 수신된 감시데이터를 직렬데이터 통신포트를 통해 중앙데이터전송시스템(CDTS)으로 전송하기 위한 데이터전송수단을 포함하는 것을 특징으로 한다.The electronic interlock device receives the control data of the central data transmission system (CDTS) input through the serial data communication port and transmits the monitoring data received from the field equipment to the central data transmission system (CDTS) through the serial data communication port. It characterized in that it comprises a data transmission means for.

이와 같은 특징을 갖는 본 발명을 첨부된 도면에 도시된 실시예를 참조하여 설명하면 다음과 같다.Referring to the embodiment shown in the accompanying drawings, the present invention having such features are as follows.

도 3은 본 발명이 적용되는 열차집중제어장치와 전자연동장치의 인터페이스구성이다. 3 is an interface configuration of the train concentration control apparatus and the electronic linkage apparatus to which the present invention is applied.

본 발명은 지역데이터전송장치(LDTS)의 역할인 직렬데이터와 병렬데이터의 변환을 제외시키고, 열차집중제어(CTC)장치의 중앙데이터전송장치(CDTS)의 대칭직렬통신신호를 도 3에서와 같이, 전자연동장치의 연동논리부내장형시스템에서 직접 인터페이스하는 구성을 갖는다.The present invention excludes the conversion of serial data and parallel data, which are roles of the local data transmission device (LDTS), and the symmetric serial communication signal of the central data transmission device (CDTS) of the train intensive control (CTC) device as shown in FIG. In addition, it has a configuration of directly interfacing with the integrated logic integrated system of an electronic interlocking device.

중앙데이터전송장치(CDTS)는 전자연동장치의 직렬통신포트를 통해 직렬통신인터페이스를 구축하게 되고, 전자연동장치는 직렬통신포트를 통해 중앙데이터전송장치(CDTS)와 데이터를 송수신하게 된다.The central data transmission device (CDTS) establishes a serial communication interface through the serial communication port of the electronic interlock device, and the electronic interlock device transmits and receives data with the central data transmission device (CDTS) through the serial communication port.

열차집중제어(CTC)장치에서 전자연동장치로 전송되는 열차의 진로제어데이터는 열차집중제어(CTC)장치의 컴퓨터의 메모리 데이터에서 중앙데이터전송장치(CDTS)로 직렬 또는 이더넷통신으로 데이터를 전송한다. The train control data of the train transmitted from the train control system (CTC) to the electronic interlocking device is transmitted from the memory data of the computer of the train control system (CTC) to the central data transmission device (CDTS) by serial or Ethernet communication. .

이때 전송된 데이터(D11)는 전자연동장치가 설치된 해당 역으로 연결된 직렬데이터 케이블을 따라 대칭직렬데이터통신(D12, 번호13)으로 데이터를 전송한다. At this time, the transmitted data D11 transmits the data to the symmetrical serial data communication (D12, number 13) along the serial data cable connected to the corresponding station in which the electronic interlocking device is installed.

해당 역에 도착한 진로제어데이터는 전자연동장치의 내장형시스템 직렬포트로 직접 연결되고, 전자연동장치 내부에서 대칭직렬데이터는 메모리데이터(D14) 또는 버스데이터로 변환된다.The career control data arriving at the station is directly connected to the integrated system serial port of the electronic interlocking device, and the symmetric serial data is converted into the memory data D14 or the bus data inside the electronic interlocking device.

전자연동장치에서 열차집중제어(CTC)장치로 전송되는 현장신호기기 상태 및 진로취급데이터는 위에서 언급한 열차집중제어(CTC)장치에서 전자연동장치로 전송되는 과정의 역순으로 진행된다.On-site signal device status and career handling data transmitted from the electronic interlocking device to the train control system (CTC) are processed in the reverse order of the process transmitted from the above-mentioned train control system (CTC) to the electronic interlocking device.

이와 같은 본 발명은, 지역데이터전송장치(LDTS)를 시스템 인프라에서 제외시켜, 지역데이터전송장치에서 발생할 수 있는 하드웨어적인 결함에 의한 고장률과 두 개의 시스템(LDTS, 전자연동장치)를 통합하므로써 운영체제와 같이 중복되거나, 디바이스 드라이버와 같이 하드웨어와 함께 제외되는 영역의 소프트웨어에 잠재할 수 있는 오류의 확률을 감소시켜 열차진로제어시스템 인프라전반의 신뢰성을 향상시키며, 열차집중제어(CTC)장치와 전자연동장치의 연결을 간소화시켜, 시스템구현과 유지보수에 보다 효과적이다.   The present invention removes the local data transmission device (LDTS) from the system infrastructure, and integrates the two systems (LDTS, electronic interlocking device) and the failure rate due to hardware defects that may occur in the local data transmission device. It improves the reliability of the entire train path control system infrastructure by reducing the probability of errors that can occur in software in areas overlapping or excluded together with hardware such as device drivers. Simplify the connection of the system, making it more effective for system implementation and maintenance.

또한 지역데이터전송장치(LDTS)에 의해 생성된 메시지의 오류에 의한 바이탈(vital) 장비인 전자연동장치의 위험측 고장 발생확률을 사전에 제거하여 열차진로제어시스템 인프라전반의 안전성을 향상시킨다.In addition, it improves the safety of the entire infrastructure of the train control system by eliminating the probability of failure of the dangerous side of the electronic interlocking device, which is a vital equipment due to the error of the message generated by the LDTS.

도 1은 일반적인 종래 열차 진로제어 시스템을 나타낸 블록도.1 is a block diagram showing a conventional conventional train route control system.

도 2는 종래 시스템에 있어서, 열차의 진로를 제어하기 위한 핵심장치인 열차집중제어장치(CTC)와 전기연동장치의 통신 연결구조를 나타낸 블록도.Figure 2 is a block diagram showing a communication connection structure of the train central control device (CTC) and the electro-interlocking device which is a key device for controlling the course of the train in the conventional system.

도 3은 본 발명 직렬통신 인터페이스 방식 열차진로 제어시스템의 인터페이스 구성을 나타낸 블록도. Figure 3 is a block diagram showing the interface configuration of the present invention serial communication interface type train control system.

Claims (1)

각 단위역 설비로 현장설비와의 데이터 통신을 수행하는 전자연동장치를 통해 원격의 중앙사령의 열차집중제어(CTC)장치에서 현장 설비기기의 상태를 감시하고 열차의 진로를 취급하는 열차 진로 제어시스템에 있어서,Train track control system that monitors the status of on-site equipment and handles the course of trains in remote centralized train control system (CTC) through an electronic interlocking device that performs data communication with on-site equipment to each station equipment. To 전자연동장치의 직렬데이터 통신포트를 이용하여 개별역의 신호기기 상태를 감시하고, 열차의 진로를 취급하기 위한 데이터를 송수신하기 위한 열차집중제어(CTC) 장치내의 중앙데이터전송시스템(CDTS)과 전자연동장치가 직렬통신 인터페이스를 구성하고,  The central data transmission system (CDTS) and the electronics in the centralized train control system (CTC) are used to monitor the status of signaling devices at individual stations and to transmit and receive data for handling the course of the train using the serial data communication port of the electronic interlocking device. Interlocking devices form a serial communication interface, 전자연동장치는 직렬데이터 통신포트를 통해 입력되는 중앙데이터 전송시스템(CDTS)의 제어데이터의 수신 및 현장 설비기기로부터 수신된 감시데이터를 직렬데이터 통신포트를 통해 중앙데이터전송시스템(CDTS)으로 전송하기 위한 데이터전송수단을 포함하는 것을 특징으로 하는 직렬통신 인터페이스 방식 열차 진로 제어시스템.The electronic interlock device receives the control data of the central data transmission system (CDTS) input through the serial data communication port and transmits the monitoring data received from the field equipment to the central data transmission system (CDTS) through the serial data communication port. Serial communication interface type train route control system comprising a data transmission means for.
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Cited By (5)

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KR100800110B1 (en) * 2007-04-09 2008-02-01 유경제어 주식회사 Relay type interlocking system with remote control
KR100844551B1 (en) * 2006-11-15 2008-07-08 대아티아이(주) System and method for displaying schedule train course in railway and subway
KR100921541B1 (en) * 2007-12-06 2009-10-12 대아티아이(주) Protable LDTS maintenance device
CN111516734A (en) * 2020-05-08 2020-08-11 湖南中车时代通信信号有限公司 Data communication method and system for railway train
KR102253789B1 (en) * 2020-12-30 2021-05-20 대아티아이 (주) Electronic interlocking system of independent two-channel structure and control method

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
JP3313308B2 (en) 1997-07-31 2002-08-12 三菱電機株式会社 Dual electronic interlocking device
KR100288748B1 (en) * 1999-03-03 2001-04-16 구자영 A monitering system and method of a railway vehicle
KR100471346B1 (en) * 2002-01-16 2005-03-08 삼표케이알티 주식회사 remote divergence track guard system using wire/wireless in railroad turnout

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100844551B1 (en) * 2006-11-15 2008-07-08 대아티아이(주) System and method for displaying schedule train course in railway and subway
KR100800110B1 (en) * 2007-04-09 2008-02-01 유경제어 주식회사 Relay type interlocking system with remote control
KR100921541B1 (en) * 2007-12-06 2009-10-12 대아티아이(주) Protable LDTS maintenance device
CN111516734A (en) * 2020-05-08 2020-08-11 湖南中车时代通信信号有限公司 Data communication method and system for railway train
KR102253789B1 (en) * 2020-12-30 2021-05-20 대아티아이 (주) Electronic interlocking system of independent two-channel structure and control method

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