JP2011057051A - Digital automatic train control (atc) device - Google Patents

Abstract

In the case of a non-insulated track circuit, the logic unit connected to the transmitter is connected to the control boundary track circuit, and the logic unit connected to the receiver is the ATC message of the outer track circuit of the control boundary track circuit. There is a possibility that the ATC message may be transmitted to the control boundary track circuit even though the ATC message is transmitted to the outer track circuit.
A configuration in which adjacent logic units of a digital ATC device are connected to each other by a dedicated LAN, a train entry side logic unit and a transmitter are connected in a control boundary track circuit, and a train entry side logic unit and a receiver are connected. And The train entry side logic unit transmits the content of the TD message transmitted to the transmitter via the dedicated LAN to the train advance side logic unit, and the validity of the content of the TD message received from the receiver in the train advance side logic unit. Confirm.
[Selection] Figure 1

Description

  The present invention relates to an ATC transmission control system for a digital ATC device.

  Generally, the ATC device determines the stop limit position of the train according to the distance from the preceding train and the route opening status of the ground device, and transmits the information to the track circuit as a train control message (hereinafter referred to as an ATC message). This is a system that automatically performs speed control that allows the on-board device to stop at the stop limit position indicated in the ATC telegram received from the track circuit.

  The train position detection in the ground device of the ATC device is performed by transmitting a train detection message (hereinafter referred to as a TD message) to the track circuit via a transmitter whose logic unit is connected to the train advancement end of the track circuit, By receiving a TD telegram from a receiver connected to the train entry end, it is determined whether or not the train is in the track circuit. Regarding the presence line detection, the logic unit determines that the line is in the presence when the signal level of the TD message received from the receiver is less than the specified value. In order to ensure safety for non-at-home detection, in addition to the signal level exceeding the specified value, the logic unit matches the content of the TD message sent to the transmitter and the content of the TD message received from the receiver. Judged to be out of line.

  In order to perform the above-mentioned train detection, in the case of an insulated track circuit, one transmitter and one receiver are required for one track circuit, but in the case of an uninsulated track circuit, one transmitter is TD telegrams can be transmitted to adjacent two track circuits connected, and one receiver can receive TD telegrams from two connected track circuits. By connecting the transmitter and the receiver alternately to each other and setting the signal frequency for each transmitter, the train detection of the two track circuit can be performed by one receiver.

  Therefore, the non-insulated track circuit can simplify the track circuit peripheral equipment and improve the maintainability compared to the insulated track circuit. However, in the case of a non-insulated track circuit, the logic unit needs to transmit the ATC message only to the train track line circuit in order to prevent interference with the signal of the adjacent track circuit when transmitting the ATC message in the ground device. Therefore, the logic unit performs ATC step-by-step transmission in which the ATC message is not transmitted to the rear track circuit after the presence line is detected, and then the ATC message is transmitted to the track circuit.

  In a general system configuration of the ATC ground device, a section from one station to two stations is controlled by one logic unit, and a plurality of logic units have respective control ranges. In the case of a non-insulated track circuit in a track circuit (hereinafter referred to as a control boundary track circuit) that straddles the control boundary of an adjacent logic unit, one of the adjacent logic units is a transmitter for ATC message transmission and a transmission for train detection The other will be connected to the train detection receiver.

  However, in this configuration, when the train is connected to the control boundary track circuit, the logic unit connected to the transmitter is a timing when the logic unit connected to the receiver does not transmit the ATC message of the outer track circuit of the control boundary track circuit. The ATC message could not be detected, and the ATC message could be transmitted to the control boundary track circuit despite the ATC message being transmitted to the outer track circuit.

  At this time, the on-board device receives the crossed ATC telegram, detects no signal, and makes an emergency stop. Further, since the logic unit connected to the receiver cannot recognize the contents of the TD message transmitted by the logic unit connected to the transmitter, the validity of the TD message received from the receiver cannot be confirmed. At this time, the logic unit connected to the receiver performs the train detection only by the signal level, and there is a possibility that the absence line is erroneously detected due to a temporary increase in the signal level due to equipment failure or the like. Therefore, in the ATC ground device using the conventional non-insulated track circuit, the track circuit adjacent to the control boundary of the logic unit is insulated.

  FIG. 4 shows a configuration diagram of a conventional example. The logic unit 1 and the logic unit 2 are connected by a dedicated LAN 3, and each logic unit transmits and receives information necessary for train control via the dedicated LAN 3 by the adjacent logic unit interface units 15A and 15B.

  Each logic unit transmits / receives information to / from each track circuit transmitter / receiver interface unit 16A, 16B, and whether or not the train is present based on the validity and level of the contents of the TD message received from each track circuit receiver Train detection units 4A and 4B for determining whether or not, telegram creation units 5A and 5B for creating ATC telegrams for each track circuit from the on-line information and linkage information, and transmission and non-transmission of ATC telegrams for each track circuit based on the on-line information It has the transmission determination part 6A, 6B which determines.

  An insulation 7 is provided at the boundary of the track circuit adjacent to the control boundary. A transmitter 9 and a receiver 10 are connected to the exit track circuit 8 of the logic unit 1, and the logic unit 1 transmits a TD message via the transmitter 9, and the TD message received from the receiver 10 and the transmitter 9. Compare the contents of the TD message sent to, and confirm the validity of the TD message. Further, the ATC message transmitted to the outer track circuit via the transmitter 11 is not transmitted when the line is in the exit track circuit 8, and the ATC message is transmitted to the transmitter 9. The train 12 receives the ATC message, and the control unit 13 performs traveling control based on the ATC message.

  The logic unit 2 uses the transmitter 15 and the receiver 16 connected to the entrance / exit track circuit 14 to perform train detection as in the logic unit 1. Further, an ATC telegram is transmitted to the transmitter 15 when the entry track circuit 14 is on line.

  In order to achieve the above object, the present invention uses the following means. Adjacent logic units are connected to each other via a dedicated LAN. In the control boundary track circuit, the train approach side logic unit and the transmitter are connected, and the train advance side logic unit and the receiver are connected. The train entry side logic unit transmits the content of the TD message transmitted to the transmitter via the dedicated LAN to the train advance side logic unit, and the validity of the content of the TD message received from the receiver in the train advance side logic unit. A configuration that can be confirmed.

  Further, when the train enters the control boundary track circuit and the ATC message of the rear track circuit is not transmitted, the train advance side logic unit sends the ATC transmission instruction information to the control boundary track circuit via the dedicated LAN. The train approaching logic unit is configured to perform ATC step-by transmission by transmitting an ATC message to the transmitter using the ATC transmission instruction information.

  According to the present invention, by enabling train detection and ATC stepping transmission in a non-insulated logic unit control boundary track circuit, it is possible to make the logic unit control boundary track circuit non-insulated, reducing track peripheral equipment, Maintenance costs can be reduced.

FIG. 1 is a diagram showing a device configuration of a first embodiment of the present invention. FIG. 2 is a diagram showing a device configuration of the second embodiment of the present invention. FIG. 3 is a diagram showing a device configuration of Embodiment 4 of the present invention. FIG. 4 is a diagram showing a configuration of a conventional apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an apparatus configuration of Embodiment 1 of the present invention. In FIG. 1, 1 and 2 are logic units, 3 is a dedicated LAN, 4A and 4B are train detection units, 5A and 5B are message creation units, 6A and 6B are transmission determination units, 7 is a control boundary track circuit, and 8A and 8B. Is a control boundary TD message output unit, 9A and 9B are control boundary train detection units, 10 is an outer track circuit, 11A and 11B are ATC transmission instruction determination units, 12A and 12B are control boundary ATC transmission determination units, and 13 and 15 are A transmitter, 14 is a receiver, 16 is a train, and 17 is a control unit.

  The logic units 1 and 2 which are adjacent logic units are connected by a dedicated LAN 3, and each logic unit exchanges information necessary for train control via the dedicated LAN 3 by the LAN interface units 18A and 18B.

  The logic unit 1 and the logic unit 2 are connected to the transmitter / receiver interface units 19A and 19B for exchanging information with the transmitter / receiver of each track circuit, and the validity and signal level of the contents of the TD message received from the receiver of each track circuit. Train detectors 4A and 4B that determine whether or not they are present, telegram creators 5A and 5B that create ATC telegrams for each track circuit from the on-line information and linkage information, and ATC telegrams for each track circuit based on the track information Transmission decision units 6A and 6B that determine transmission and non-transmission, and control boundary TD message output units 8A and 8B that transmit the contents of TD messages to adjacent logic units when transmitting TD messages to the control boundary track circuit 7. When receiving a TD message from the control boundary track circuit 7, the control boundary train detectors 9A and 9B perform the train detection by confirming the validity of the TD message by comparing with the contents of the TD message received from the adjacent logic unit. When the TD telegram is received from the control boundary trajectory circuit 7, the ATC telegram of the outer trajectory circuit 10 is not transmitted by detecting the presence of the control boundary trajectory circuit 7, and the control boundary trajectory circuit 7 is transmitted to the adjacent logic unit. ATC transmission instruction determination units 11A and 11B that transmit an ATC transmission instruction of ATC, and control boundary ATC transmission determination units 12A and 12B that transmit an ATC message to the control boundary trajectory circuit 7 using the ATC transmission instruction received from the adjacent logic unit have.

  A transmitter 13 is connected to the train advancing end of the control boundary track circuit 7 of the logic unit 1 and the logic unit 2, and a receiver 14 is connected to the train entering end. The logic unit 2 is connected to the transmitter 13 and constantly transmits a TD message to the control boundary track circuit 7 via the transmitter 13. At the same time, the logic unit 2 transmits the contents of the TD message transmitted to the control boundary track circuit 7 in the control boundary TD message output unit 8B to the dedicated LAN 3. The logic unit 1 is connected to the receiver 14, receives the TD message transmitted from the transmitter 13 via the receiver 14, and receives the TD message received from the logic unit 2 via the dedicated LAN 3 in the control boundary train detection unit 9A. The legitimacy of the TD message is confirmed by comparing the contents and the contents of the TD message received from the receiver 14, and train detection is performed.

  The logic unit 1 creates an ATC message of the outer track circuit 10 in the message generation unit 5A while the train detection unit 4A detects the presence of the track on the outer track circuit 10 of the control boundary track 7, and the transmission determination unit 6A. Then, the ATC message is transmitted to the transmitter 15. The train 16 receives the ATC telegram of the outer track circuit 10 and performs a running control in the control unit 17 based on the ATC telegram.

  When the train further travels and the logic unit 1 detects an on-line in the control boundary track circuit 7, the transmission determination unit 6A makes the ATC message of the outer track circuit 10 untransmitted, and the ATC transmission instruction determination unit 11A controls the control boundary track circuit. 7 is transmitted to the dedicated LAN 3. In the control boundary ATC transmission determination unit 12B, the logic unit 2 transmits an ATC message to the transmitter 13 upon reception of the ATC transmission instruction information from the dedicated LAN 3. The train 16 receives the ATC telegram of the control boundary track circuit 7 and performs control of traveling based on the ATC telegram in the control unit 17.

  Next, the apparatus configuration of the second embodiment of the present invention is shown in FIG. In FIG. 2, 1 is a logic unit, 2, 3 is a train detection device, 4 is a dedicated LAN, 5 is a control boundary track circuit, 6 and 9 are transmitters, 7 is a receiver, 8 is an outer track circuit, 10 is Telegram creation unit, 11A and 11B are train detection units, 12A and 12B are transmission determination units, 13A and 13B are control boundary TD message output units, 14A and 14B are control boundary train detection units, and 15A and 15B are ATC transmission instruction determination units. , 16A and 16B are control boundary ATC transmission determination units, 17 is a train, 18 is a control unit, 19 is a train detection device interface unit, 20A and 20B are logic unit interface units, 21A and 21B are LAN interface units, and 22A and 22B are 2 shows a transceiver interface unit.

  A general system configuration as an ATC ground device is a configuration in which one logic unit has one station as a control range, a plurality of train detection devices are installed under it, and transceivers for several tens of tracks are controlled for each train detection device. It is. In this configuration, if the presence determination in train detection and the ATC transmission start determination in ATC depression transmission are performed in the logic unit, it takes time to transmit information between the logic unit and the transceiver via the train detection device. As a result, the start of ATC transmission to the track circuit is delayed, and there is a possibility that no signal will be detected in the on-board device and an emergency stop will occur. Therefore, the train detection device performs the presence determination and the ATC transmission start determination in the ATC depression transmission.

  In this configuration, as shown in FIG. 2, the logic unit 1 connects the train detection device 2 and the train detection device 3 under its control, and connects the adjacent train detection device 2 and the train detection device 3 via the dedicated LAN 4. In the control boundary track circuit 5 across the control boundary of the train detection device, the train detection device 3 is connected to the transmitter 6 and the train detection device 2 is connected to the receiver 7. The train detection device 2 is connected to a transmitter 9 that transmits an ATC telegram to the outer track circuit 8 of the control boundary track circuit 5.

  The logic unit 1 creates an ATC telegram for each track circuit from the train detection device interface unit 19 for exchanging information with each train detection device, and the link information and the on-line information received from the train detection device, and transmits the ATC message to each train detection device. It has a message creation unit 10.

Each train detection device detects the train via the logic unit interface units 20A and 20B for exchanging information with the logic unit 1, the transmitter / receiver interface units 22A and 22B for exchanging information with the transceivers of each track circuit, and the dedicated LAN 4. LAN interface unit 21A for exchanging information between devices,
21B, train detection units 11A and 11B that determine whether or not a train is present based on the validity and level of the contents of the TD message received from the receiver of each track circuit, and received from the logic unit 1 based on the presence line information Transmission determination units 12A and 12B that determine whether ATC messages are transmitted or not transmitted for each track circuit, and control boundary TD messages that transmit the contents of TD messages to adjacent logic units when transmitting TD messages to the control boundary track circuit 5 Control boundary train detection that checks the validity of a TD message and detects a train by comparing it with the contents of a TD message received from an adjacent logic unit when receiving a TD message from the output units 13A and 13B and the control boundary track circuit 5 When the TC telegram is received from the control boundary trajectory circuit 5 and the ATC telegram of the outer trajectory circuit 8 is not transmitted by detecting the presence of the control boundary trajectory circuit 5 when receiving the TD telegram from the control boundary trajectory circuit 5 ATC transmission instruction determination units 15A and 15B that transmit an ATC transmission instruction of the control boundary trajectory circuit 5 to the adjacent logic unit, and an ATC message to the control boundary trajectory circuit 5 by the ATC transmission instruction received from the adjacent logical unit Control boundary ATC transmission determination units 16A and 16B are provided.

  The train detection device 3 always transmits a TD message to the control boundary track circuit 5 via the transmitter 6, and simultaneously transmits the contents of the TD message transmitted to the control boundary track circuit 5 in the control boundary TD message output unit 13B to the dedicated LAN 4. To do. The train detection device 2 receives the TD message transmitted from the transmitter 6 via the receiver 7, and the receiver receives the contents of the TD message received from the train detection device 3 via the dedicated LAN 4 in the control boundary train detection unit 14A. 7 confirms the correctness of the TD message by comparing the contents of the TD message received from 7 and performs train detection.

  In addition, the train detection device 2 transmits an ATC telegram to the transmitter 9 in the transmission determination unit 12A while the train detection unit 11A detects the presence of the track on the outer track circuit 8 of the control boundary track 5. The train 17 receives the ATC telegram of the outer track circuit 8 and performs a running control in the control unit 18 based on the ATC telegram.

  When the train further travels and the train detection device 2 detects the presence of a line in the control boundary track circuit 5, the train detection device 2 makes the ATC message of the outer track circuit 8 untransmitted in the transmission determination unit 12A, and the ATC transmission instruction determination unit In 15A, ATC transmission instruction information for the control boundary track circuit 5 is transmitted to the dedicated LAN 4. The train detection device 3 transmits an ATC message to the transmitter 6 by receiving the ATC transmission instruction information from the dedicated LAN 4 in the control boundary ATC transmission determination unit 16B. The train 17 receives the ATC telegram of the control boundary track circuit 5, and the control unit 18 performs row control based on the ATC telegram.

  This configuration can realize the same function even when the train detection device 2 and the train detection device 3 are connected to different logic units in the logic unit control boundary track circuit.

  Next, FIG. 3 shows an apparatus configuration of Embodiment 3 of the present invention. In FIG. 3, 1 and 2 are logic units, 3 and 4 are LAN control devices, 5 and 11 are dedicated LANs, 6 is a control boundary trajectory circuit, 7 and 10 are transmitters, 8 is a receiver, and 9 is an outer trajectory. Circuits, 12A and 12B are train detection units, 13A and 13B are message creation units, 14A and 14B are transmission determination units, 15A and 15B are control boundary train detection units, 16A and 16B are control boundary TD message output units, 17A and 17B Is a control boundary TD message input unit, 18A and 18B are ATC transmission instruction determination units, 19A and 19B are control boundary ATC transmission determination units, 20 is a control boundary transmission determination unit, 21 is a train, 22 is a control unit, and 23A and 23B are Adjacent logical unit interface units, 24A and 24B are transceiver interface units, 25A and 25B are LAN interface units, and 26A and 26B are logical unit / transceiver interface units.

  FIG. 3 shows a configuration in which a LAN control device is installed and information is exchanged between the devices when it is difficult to add a dedicated LAN interface in the above-described logic unit and train detection device. This configuration will be described below.

  Adjacent logic unit 1 and logic unit 2 are connected to LAN control device 3 and LAN control device 4, respectively, and LAN control device 3 and LAN control device 4 are connected by dedicated LAN 5. In the control boundary trajectory circuit 6 across the logic unit control boundary, the logic unit 2 is connected to the transmitter 7, and the logic unit 1 is connected to the receiver 8. The logic unit 1 is connected to a transmitter 10 that transmits an ATC message to the outer track circuit 9 of the control boundary track circuit 6. The logic unit 1 and the logic unit 2 are connected by a dedicated LAN 11, and each logic unit exchanges information necessary for train control via the dedicated LAN 11 by the logic unit interface units 23A and 23B.

  Each logic unit is connected to the transmitter / receiver interface units 24A and 24B for exchanging information with the transmitter / receiver of each track circuit, and whether the train is present from the validity and signal level of the contents of the TD message received from the receiver of each track circuit Train detection units 12A and 12B for determining whether or not, telegram creation units 13A and 13B that create ATC telegrams for each track circuit from the on-line information and linkage information, and transmission and non-transmission of ATC telegrams for each track circuit based on the on-line information When the TD message is received from the transmission determination units 14A and 14B and the receiver of the control boundary trajectory circuit, the content of the TD message is compared with the content of the TD message received from the adjacent logic unit via the LAN controller. It has control boundary train detectors 15A and 15B that confirm the validity and detect the train.

  Each LAN control device includes LAN interface units 25A and 25B for exchanging information between the LAN control devices via the dedicated LAN 5, and logic units / transceiver interface units 26A and 26B for exchanging information with the logic unit and the transceiver. The control unit TD message output units 16A and 16B that receive the TD message transmitted from the logic unit to the transmitter of the control boundary track circuit and transmit the contents of the TD message to the dedicated LAN, and the contents of the TD message received from the dedicated LAN. The control boundary TD message input units 17A and 17B to be transmitted to the logic unit and the ATC message non-transmission instruction transmitted from the logic unit to the transmitter of the outer track circuit of the control boundary track circuit are received in the dedicated LAN. The ATC transmission instruction determination units 18A and 18B that transmit the ATC message transmission instruction and the ATC message transmission instruction received from the dedicated LAN are transmitted by the control boundary trajectory circuit. Control limits and transmits to the vessel ATC transmission determination unit 19A, having 19B.

  In the case of the transmitter of the control boundary trajectory circuit, the transmitter transmits the ATC message to the control boundary trajectory circuit when receiving the ATC message from the logic unit and receiving the ATC message transmission instruction from the LAN controller. A boundary transmission determination unit 20 is included.

  The logic unit 2 always transmits a TD message to the control boundary track circuit 6 via the transmitter 7. At the same time, the LAN control device 4 receives the TD message and transmits the content of the TD message transmitted to the control boundary track circuit 6 in the control boundary TD message output unit 16B to the dedicated LAN 5. The LAN control device 3 transmits the contents of the TD message received from the dedicated LAN 5 at the control boundary TD message input unit 17A to the logic unit 1. The logic unit 1 receives the TD message transmitted from the transmitter 7 via the receiver 8, and compares the content of the TD message received from the LAN control device 3 in the control boundary train detection unit 15A with the validity of the TD message. Confirm that the train is detected.

  The logic unit 1 creates an ATC telegram of the outer track circuit 9 by the telegram creation unit 13A while the train detection unit 12A detects the presence of the track on the outer track circuit 9 of the control boundary track 6, and the transmission determination unit 14A An ATC message is transmitted to the transmitter 10. The train 21 receives the ATC telegram from the outer track circuit 9 and performs control of traveling based on the ATC telegram in the control unit 22. The logic unit 1 transmits the presence / absence line information of the outer track circuit 9 of the control boundary track circuit 6 to the logic unit 2 via the dedicated LAN 11. When the logic unit 2 receives the on-line information of the external track circuit 9 from the dedicated LAN 11, the logic unit 2 starts to transmit the ATC message of the control boundary track circuit 6 to the transmitter 7. However, even if the transmitter 7 receives the ATC message from the logic unit 2 in the control boundary transmission determination unit 20, it does not receive an ATC transmission instruction from the LAN control device 4, and therefore does not transmit the ATC message to the control boundary track circuit 6.

  When the train further travels and the logic unit 1 detects the presence of a line in the control boundary track circuit 6, the transmission determination unit 14A transmits to the transmitter 10 an ATC non-transmission instruction for not transmitting the ATC message of the outer track circuit 9. . At the same time, the LAN control device 3 receives the ATC non-transmission instruction, and transmits the ATC message transmission instruction of the control boundary track circuit 6 to the dedicated LAN 5 in the ATC transmission instruction determination unit 18A. The LAN control device 4 receives the ATC transmission instruction from the dedicated LAN 5 and transmits the ATC transmission instruction to the transmitter 7 in the control boundary ATC transmission determination unit 19B. The transmitter 7 transmits the ATC message received from the logic unit 2 to the control boundary trajectory circuit 6 by receiving the ATC transmission instruction information from the LAN control device 4.

1 Logic part 2 Logic part 3 Dedicated LAN
4A Train detection unit 4B Train detection unit 5A Telegram creation unit 5B Telegram creation unit 6A Transmission determination unit 6B Transmission determination unit 7 Control boundary track circuit 8 Exit track circuit 8A Control boundary TD message output unit 8B Control boundary TD message output unit 9A Control Boundary train detection unit 9B Control boundary train detection unit 10 Outer track circuit 11A ATC transmission instruction determination unit 11B ATC transmission instruction determination unit 12A Control boundary ATC transmission determination unit, train detection unit 12B Control boundary ATC transmission determination unit, train detection unit 13 Transmitter 13A Control boundary TD telegram output unit, telegram creation unit 13B Control boundary TD telegram output unit, telegram creation unit 14 Receiver 14A Control boundary train detection unit, transmission determination unit 14B Control boundary train detection unit, transmission determination unit 15 Transmitter 15A ATC transmission instruction determination unit, control boundary train detection unit 15B ATC transmission instruction determination unit, control boundary sequence Detection unit 16 Train 16A Control boundary ATC transmission determination unit, control boundary TD message output unit 16B Control boundary ATC transmission determination unit, control boundary TD message output unit 17 Control unit, train 18 control unit 18A ATC transmission instruction determination unit 18B ATC transmission instruction Determination unit 19 Train detection device interface unit 19A Control boundary ATC transmission determination unit 19B Control boundary ATC transmission determination unit 20 Control boundary transmission determination unit 20A Logic unit interface unit 20B Logic unit interface unit 21 Train 21A LAN interface unit 21B LAN interface unit 22 Control Unit 22A Transceiver interface unit 22B Transceiver interface unit 23A Adjacent logic unit interface unit 23B Adjacent logic unit interface unit 24A Transceiver interface unit 24B Transceiver interface unit 25A LAN interface unit 25B LAN interface unit 26A Logic unit / transceiver interface unit 26B Logic unit / transceiver interface unit

Claims (8)

  Non-insulated track circuit, transmitter and receiver connected to the boundary of each track circuit, and TD message transmitted from the transmitter to the track circuit from the receiver and received by the receiver The train detection unit that determines whether the train is on the basis of the validity of the contents and the signal level, the telegram creation unit that creates the ATC telegram for each track circuit from the on-line information and linkage information, and the on-line information for each track circuit In the ATC ground device in which there are a plurality of logical units each having a transmission determination unit for determining whether ATC messages are transmitted or not transmitted, and the adjacent logical units are connected by a dedicated LAN, the ATC is transmitted via the dedicated LAN. A digital ATC device, wherein transmission instruction information is exchanged and an ATC message is transmitted in a logic unit control boundary orbit circuit, which is a track circuit straddling a control boundary between adjacent logic units.   2. The digital ATC device according to claim 1, wherein the logic unit unsends an ATC message to the outer track circuit by detecting the presence of the logic unit control boundary track circuit and transmits the ATC transmission instruction information to the adjacent logic unit. An ATC transmission instruction determination unit that determines whether to perform transmission, and a control boundary ATC transmission determination unit that determines to transmit an ATC message to the logical unit control boundary trajectory circuit based on the ATC transmission instruction information received from the adjacent logical unit. A digital ATC device characterized by the above.   2. The digital ATC device according to claim 1, wherein the content of the TD message transmitted to the previous transmitter of the logic unit control boundary orbit circuit is exchanged between adjacent logic units via the dedicated LAN and received from the receiver. A digital ATC device that ensures safety in train detection by confirming the validity of a message in comparison with a TD message.   2. The digital ATC device according to claim 1, wherein when the logic unit transmits the TD message in the logic unit control boundary orbit circuit to the transmitter, the content of the TD message is transmitted to an adjacent logic unit via the dedicated LAN. A control boundary TD message output unit for transmitting the message, and a control boundary train detection unit that compares the content of the TD message received from the adjacent logic unit with the previous TD message received from the receiver to determine the validity of the message. A digital ATC device characterized by the above.   Non-insulated track circuit, transmitter and receiver connected to the boundary of each track circuit, and TD message transmitted from the transmitter to the track circuit from the receiver and received by the receiver Train detection device comprising a train detection unit for determining whether or not a train is present from the legitimacy of the contents and signal level, and a transmission determination unit for determining transmission or non-transmission of an ATC message for each track circuit based on the presence line information And an ATC that includes a logic unit including a telegram creation unit that creates an ATC telegram for each track circuit based on link information and on-line information received from a plurality of train detection devices, and connects adjacent train detection devices with a dedicated LAN. In a ground device, a train detection device control boundary track circuit that is a track circuit that exchanges ATC transmission instruction information between adjacent train detection devices via the dedicated LAN and straddles the control boundary of adjacent train detection devices Digital ATC device and transmits the ATC message.   6. The digital ATC device according to claim 5, wherein the train detection device untransmits an ATC message to an outer track circuit by detecting the presence of the train detection device control boundary track circuit, and transmits the ATC transmission instruction information to an adjacent logic unit. An ATC transmission instruction determination unit for determining whether to transmit to the train detection apparatus, and a control boundary ATC transmission determination to determine to transmit an ATC message to the train detection apparatus control boundary track circuit based on the ATC transmission instruction information received from the adjacent train detection apparatus A digital ATC device comprising a unit.   Non-insulated track circuit, transmitter and receiver connected to the boundary of each track circuit, and TD message transmitted from the transmitter to the track circuit from the receiver and received by the receiver The train detection unit that determines whether the train is on the basis of the validity of the contents and the signal level, the telegram creation unit that creates the ATC telegram for each track circuit from the on-line information and linkage information, and the on-line information for each track circuit There are a plurality of configurations including a logic unit having a transmission determination unit for determining whether ATC messages are transmitted and not transmitted, a transceiver, and a LAN controller connected to both of the logic units, and LAN control under the adjacent logic unit In an ATC ground device in which devices are connected by a dedicated LAN, ATC transmission instruction information is exchanged between adjacent logical units via the dedicated LAN, and an ATC message is transmitted to the logical unit control boundary trajectory circuit. That digital ATC system.   8. The digital ATC device according to claim 7, wherein when the logic unit receives a TD message from a receiver of the logic unit control boundary orbit circuit, the contents of the TD message received from an adjacent logic unit via the LAN controller. A control boundary train detection unit that confirms the correctness of the TD message by comparing with the control boundary train detection unit for detecting the train, and the LAN control device transmits the ATC to the transmitter of the outer track circuit of the control boundary track circuit An ATC transmission instruction determination unit that receives a message non-transmission instruction and transmits an ATC message transmission instruction of the logical unit control boundary orbit circuit to the dedicated LAN, and an ATC message transmission instruction received from the dedicated LAN in the logical unit control boundary orbit A control boundary ATC transmission determination unit for transmitting to a transmitter of the circuit, wherein the transmitter of the logic unit control boundary orbit circuit is a transmitter of the logic unit control boundary orbit circuit A control boundary transmission determination unit that transmits an ATC message to the logic unit control boundary trajectory circuit when an ATC message is received from the logic unit and an ATC message transmission instruction is received from the LAN controller; A featured digital ATC device.

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