JP4550475B2 - Train control information transmission system and apparatus - Google Patents

Description

  The present invention relates to a train control information transmission system for repeatedly transmitting train control information from a control device on the ground to a control device installed on a train at a constant cycle, and in particular, as a transmission path at a train position like a track circuit. Accordingly, the present invention relates to a train control information transmission system in which transmission paths are switched without overlapping, and an apparatus constituting the system.

  In ATC devices and some ATS devices that transmit control information for trains, as a method of increasing the transmission frequency when transmitting speed limit information to trains, speed limit information is repeated using a track circuit as a transmission path. A transmission method is adopted.

  In this track circuit transmission, there is a constant transmission method in which control information is transmitted to a track circuit where a train does not exist, in addition to a track circuit where a train exists. For example, by transmitting information from the track circuit where the train exists to the track circuit corresponding to the traveling direction of the train before the train enters, the on-board controller of the train can receive the information without any breaks. .

  However, if the information to be transmitted changes before and after the track circuit boundary, or if an error occurs due to noise or the like when passing through the track circuit boundary, the information that should originally be transmitted to the train cannot be transmitted correctly. It may impair the safety of the train.

  In general, as a means for confirming that information has been correctly transmitted, a technique for attaching an error detection code such as a CRC code is known. If this error detection code is used, for example, an information string combining a part of the track circuit transmission data T received before the passage of the track circuit boundary and a part of the track circuit transmission data T received after the passage is originally obtained. Even if the information string has the same length as that of the track circuit transmission data T, it does not coincide with the determination of the error detection code, so that it can be determined that the track data is not the original track circuit transmission data T.

  In addition, by setting the frequency band of the signal used for information transmission between adjacent track circuits, and setting the frequency band of the signal received by the traveling train every time it passes the track circuit boundary, Has already been put to practical use a method for determining the passage of the track circuit boundary from the change in the frequency band of the received signal and discriminating the received information before and after the passage of the track circuit boundary.

In addition to this, as a method of judging that the information sequence that combines a part of a plurality of information is not the original information, the signal reception level of the train is constant by stopping the signal transmission of the track circuit that detects the train approach for a certain period of time. A method has been proposed for detecting the passage of the track circuit boundary due to the time reduction (see, for example, Patent Document 1).
JP2003-11821A

  In the determination method using the error detection code, the range of detectable errors is limited by the size of the error detection code. If this error detection code is set to be large, the original track circuit transmission data including the error detection code becomes large, so the transmission control cycle becomes long, and transmission when transmitting speed limit information to the train. It becomes difficult to increase the frequency.

  When changing the frequency band of a signal for each track circuit, it is necessary for the train apparatus that receives this signal to determine whether or not there is reception for all the bands that may receive it, increasing the load on the on-board apparatus. .

  In general, when the on-board device of a train is in a no-signal state for more than a certain time, it is determined that the ground control device has failed and control is performed to stop the train, so signal transmission is stopped for a certain time after passing the track circuit boundary. In this case, it is necessary to set the no-signal state to be shorter than the time for determining the failure.

  An object of the present invention is to provide a function for confirming that information is correctly transmitted in addition to the error detection code, so that the on-board controller of the train before and after passing the track circuit boundary, etc. It is an object of the present invention to provide a train control information transmission system capable of detecting whether or not the train control information is the original train control information and a device constituting the system even when an information string obtained by combining a plurality of pieces of information is received.

In order to solve the above problems, a train control information transmission system according to the present invention creates an on-board control device mounted on a train traveling on a plurality of track circuits and train control information to be given to the on-board control device of the train. a ground control unit, a plurality of transmitters for transmitting over the track circuit a train control information received from the ground controller for each transmission control cycle is connected via the ground train control unit and the network for train control unit In the train control information transmission system, the ground control device sends the train control information and the track circuit identification information for identifying the track circuit to the transmitter, and the track circuit identification information is sent to each of the transmissions. Is a waiting time from when the tracker receives the track circuit identification information to when the track circuit transmission data is transmitted to the track circuit, and a timing of any length characterized for each track circuit Has a distribution, the respective transmitter, the train control data for controlling the train control information or we created trains received, prior to said column wheel control data of the train control data detection data generated by said timing information The track circuit transmission data added to the track circuit is created and transmitted to the track circuit, and the on-board controller detects train control data from the track circuit transmission data received from the track circuit transmission using train control data detection data. It is characterized by doing .
Furthermore, the train control information transmission system of the present invention is characterized in that the on-board controller detects data after the train control data detection data as train control data from the received track circuit transmission data.
Furthermore, the train control information transmission system of the present invention is characterized in that the on-board control device discards the train control data when the detected train control data does not match the length of the train control data registered in advance. And

In order to solve the above problems, a train control information transmission system according to the present invention creates an on-board control device mounted on a train traveling on a plurality of track circuits and train control information to be given to the on-board control device of the train. A plurality of transmitters connected to the ground control device and the ground control device via a network and transmitting train control information received from the ground control device to the on-board control device via the track circuit at every transmission control period In the train control information transmission system comprising the above, the ground control device sends the train control information and the track circuit identification information for identifying the track circuit to the transmitter, and the track circuit identification information is for each track circuit. The individual transmission code characterized by the above, each transmitter is generated by the individual transmission code in the train control data for controlling the train created from the received train control information. Train control data detection data is generated as a pair of track circuit transmission data before and after the train control data and transmitted to the track circuit, and the on-board control device receives the track circuit transmission data from the track circuit transmission data. Train control data is detected using train control data detection data.
Furthermore, in the train control information transmission system of the present invention, the on-board controller is configured to detect the train control data detection data when the train control data detection data attached before and after the received track circuit transmission data is a pair of data. The data is detected as train control data.
Further, the train control information transmission system of the present invention, the onboard control device, when the detected train control data does not match the length of the train control data registered in advance, characterized in that discards the train control data And

In order to solve the above problems, the ground control device of the present invention includes an on-board control device mounted on a train that travels a plurality of track circuits, and a ground control that creates train control information to be given to the on-board control device of the train. And a plurality of transmitters connected to the ground control device via the network and transmitting the train control information received from the ground control device to the on-board control device via the track circuit at every transmission control period Train control information creating means for creating train control information, track circuit identification information setting means for setting track circuit identification information, train control information and track circuit identification A transmission packet transmitting means for generating a transmission packet including information and transmitting the transmission packet to each transmitter connected to each track circuit via a network; The road identification information is a waiting time from when each transmitter receives the track circuit identification information to when the track circuit transmits the track circuit transmission data based on the track circuit identification information, and is characterized for each track circuit. The timing information is an arbitrary length .

In order to solve the above problems, the ground control device of the present invention includes an on-board control device mounted on a train that travels a plurality of track circuits, and a ground control that creates train control information to be given to the on-board control device of the train. It consists device and a plurality of transmitters for transmitting over the track circuit a train control information received from the ground controller for each transmission control cycle is connected via the ground train control unit and the network for train control unit Train control information creating means for creating train control information, track circuit identification information setting means for setting track circuit identification information, train control information and track circuit identification create a transmission packet including information, and a transmission packet transmitting means for transmitting to each transmitter connected to each of the track circuit through the network, said track Road identification information is characterized in that individual transmission codes characterized for each track circuit.

In order to solve the above problems, a transmitter according to the present invention includes an on-board control device mounted on a train traveling on a plurality of track circuits, and a ground control device that creates train control information to be given to the on-board control device of the train. And a plurality of transmitters that are connected to the ground control device via the network and transmit train control information received from the ground control device to the on-board control device via the track circuit at every transmission control period. A transmission packet receiving means for receiving a transmission packet addressed to the local station on the network, train control data based on the train control information and track circuit identification information of the received transmission packet. And track circuit transmission data creating means for creating track circuit transmission data comprising train control data detection data, and sending the track circuit transmission data to the track circuit And a road circuit data transmission means, the track circuit identity, said a waiting time until the transmitter transmits the track circuit transmits data to the track circuit after receiving the track circuit identity trajectory It is characterized by timing information of an arbitrary length characterized for each circuit .
Furthermore, the transmitter of the present invention is characterized in that the train control data detection data is a timing having a time different from that of the adjacent track circuit that is attached in front of the train control data.

In order to solve the above problems, a transmitter according to the present invention includes an on-board control device mounted on a train traveling on a plurality of track circuits, and a ground control device that creates train control information to be given to the on-board control device of the train. And a plurality of transmitters that are connected to the ground control device via the network and transmit train control information received from the ground control device to the on-board control device via the track circuit at every transmission control period. A transmission packet receiving means for receiving a transmission packet addressed to the local station on the network, train control data based on the train control information and track circuit identification information of the received transmission packet. And track circuit transmission data creating means for creating track circuit transmission data comprising train control data detection data, and sending the track circuit transmission data to the track circuit And a road circuit data transmission means, said track circuit identification information, characterized in that it is a separate transmission code characterized for each track circuit.
Furthermore, the transmitter of the present invention is characterized in that the train control data detection data is a pair of data different from adjacent track circuits attached before and after the train control data.

In order to solve the above-described problems, an on- board control device of the present invention creates an on-board control device mounted on a train traveling on a plurality of track circuits and train control information to be given to the on-board control device of the train. From a plurality of transmitters connected to the control device and the ground control device via a network and transmitting train control information received from the ground control device for each transmission control cycle to the on-board control device via the track circuit In the on-board controller constituting the train control information transmission system, the means for receiving the track circuit transmission data from the track circuit, the train control data detection data from the received track circuit transmission data, and the recognized train control based on the data detection data and a train control data detection means for detecting the train control data, the train control data detection data, each transmitter track circuit It is a waiting time from receiving the other information to transmitting the track circuit transmission data to the track circuit, and is created based on timing information of an arbitrary length characterized for each track circuit, To do .
Furthermore, the on-board control device of the present invention recognizes that the train control data detection means recognizes the data following the timing as train control data when the train control data detection data is the timing attached before the train control data, It is a means to discard this data when the recognized train control data is different from the train control data length registered in advance.

In order to solve the above-described problems, an on- board control device of the present invention creates an on-board control device mounted on a train traveling on a plurality of track circuits and train control information to be given to the on-board control device of the train. From a plurality of transmitters connected to the control device and the ground control device via a network and transmitting train control information received from the ground control device for each transmission control cycle to the on-board control device via the track circuit In the on-board controller constituting the train control information transmission system, the means for receiving the track circuit transmission data from the track circuit, the train control data detection data from the received track circuit transmission data, and the recognized train control Train control data detection means for detecting train control data based on the data detection data, the train control data detection data characterized for each track circuit Characterized in that it is created based on another transmission code.
Further, the on-board control device of the present invention is such that the train control data detection means is configured such that when the train control data detection data is a pair of data different from adjacent track circuits attached before and after the train control data, the train control data detection data It is a means which recognizes the data between as train control data.

  By adopting the above configuration, even when the on-board controller of the train receives an information string that includes a plurality of pieces of information of only a part of the original track circuit transmission information before and after passing the track circuit boundary, the original track circuit It is possible to realize a train control information transmission system that can detect whether or not it is transmission information.

  Hereinafter, an embodiment of a train control information transmission system according to the present invention will be described with reference to FIG. The train control information transmission system according to the present invention includes a ground control device 1, a network 2, a plurality of transmitters 3-1 to 3-n, track circuits 4-1 to 4-n, and a plurality of track circuits 4. And the on-board controller 5 mounted on the train 50 traveling in order.

  The ground control device 1 has a train control information creation function for creating train control information such as a speed signal, a track circuit identification information setting function for setting track circuit identification information for identifying a track circuit that is a target of the train control information, and The transmission packet P including the train control information and the track circuit identification information is generated and transmitted to the transmitter 3 connected to each track circuit 4 via the network 2. The transmission packet P for each track circuit 4 is sent from the ground control device 1 to each of the transmitters 3-1 to 3-n via the network (LAN) 2 that operates at a transmission rate of 100 Mbps, for example. The

  Examples of the transmission packet P and track circuit transmission data T will be described with reference to FIGS. 2 (a), (b), and (c). As shown in FIG. 2A, the transmission packet P has, for example, an arbitrary packet length, and describes the header part Ph and data describing the source address, destination address and other information of the transmission packet P. Data portion Pd. In the data part Pd, train control information CI and track circuit identification information TI are described.

  As shown in FIG. 2B, the track circuit transmission data T includes an example in which the train control data detection data DD is mounted as a timing signal before the train control data CD (FIG. 2B), and the train control data. There is an example (FIG. 2C) in which the detection data DD is a pair of data added before and after the train control data CD. In FIG. 2B, the train control data detection data DD is set so that the timing is different from at least the adjacent track circuit. In FIG. 2C, train control data detection data DD attached before and after the train control data CD is configured as a pair of data different from at least adjacent track circuits.

  The transmitter 3 monitors the destination address of the transmission packet P flowing on the network 2, receives the transmission packet P addressed to itself, and reads the train control information CI and the track circuit identification information TI. The transmitter 3 further creates train control data CD from the train control information CI, adds train control data detection data DD created based on the track circuit identification information TI to the train control data CD, and uses the track circuit transmission data T as a track circuit transmission data T. 4 is transmitted on a carrier wave of 100 kHz, for example, at a speed of 64 bps.

  The on-board controller 5 recognizes the train control data detection data DD from the track circuit transmission data T received from the track circuit 4, detects the train control data CD using the train control data detection data DD, and performs train control.

  Hereinafter, a specific configuration of the train control information transmission system according to the present invention will be described with reference to FIG. The ground control device 1 includes a train control information creation unit 11, a track circuit identification information setting unit 12, and a transmission packet transmission unit 13. The transmission packet transmission unit 13 includes a transmission packet creation unit 131 and a transmission packet transmission unit 132.

  Train control information creation means 11 is means for creating train control information CI such as a train speed limit signal in each track circuit. The track circuit identification information setting means 12 is information for identifying each track circuit 4 and is a means for setting track circuit identification information TI that is the basis for creating the train control data detection data DD. The transmission packet transmitter 13 generates a transmission packet P using the train control information CI and the track circuit identification information TI in the transmission packet generator 131, and is directed from the transmission packet transmitter 132 to the network 2 operating at a speed of 100 MHz, for example. Means for sending out.

  The transmitter 3 includes a transmission packet receiving unit 31, a track circuit transmission data creation unit 32, and a track circuit transmission data transmission unit 33. The transmission packet receiving unit 31 is a unit that monitors the header of the transmission packet flowing on the network 2 and receives the transmission packet P addressed to the own station. Track circuit transmission data creation means 32 creates train control data CD and train control data detection data DD using train control information CI and track circuit identification information TI extracted from the data portion of received transmission packet P. This is means for creating track circuit transmission data T using the data. The track circuit transmission data transmission means 33 is a means for sending the track circuit transmission data T to the track circuit 4 at a carrier frequency of 100 KHz and a speed of 64 bps, for example.

  The on-board controller 5 includes a track circuit transmission data receiving unit 51, a train control data detecting unit 52, and a train control unit 53. The track circuit transmission data receiving means 51 is means for receiving the track circuit transmission data T from the track circuit 4. The train control data detection means 52 is means for recognizing the train control data detection data DD from the received track circuit transmission data T and detecting the train control data CD based on the train control data detection data DD. The train control device 53 is means for controlling the train based on the train control data DD.

  A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the train control data detection data DD is configured by the transmission timing of the train control data CD. As illustrated in FIG. 5, the ground control device 1 is connected to the transmitters 3-1 to 3-3 through the network 2. The transmitter 3-1 is connected to the network 2 and transmits the track circuit transmission data T-1 to the track circuit 4-1. Similarly, the transmitter 3-2 is connected to the network 2 and transmits the track circuit transmission data T-2 to the track circuit 4-2. Similarly, the transmitter 3-3 is connected to the network 2 and transmits the track circuit transmission data T-3 to the track circuit 4-3. The train 50 receives information from the track circuits 4-1 to 4-3 where the own train exists, and controls the train control device 53.

  The ground control device 1 creates the train control information creation means 11 for the train information control information CI to be given to the train 50, and sends it from the transmission packet sending means 13 to the transmitters 3-1 to 3-3 via the network 2.

  The transmitter 3-1 transmits the transmission packet P received via the network 2 to the track circuit 4-1 as track circuit transmission data T-1. The same processing is performed for the transmitter 3-2 and the transmitter 3-3. Hereinafter, each transmitter is referred to as a term indicating all of the transmitters 3-1 to 3-3. The track circuit 4 corresponding to each transmitter 3 is referred to as the track circuit. The transmission packet P1 for the transmitter 3-1, the transmission packet P2 for the transmitter 3-2, and the transmission packet P3 for the transmitter 3-3 are referred to as the transmission packet P.

  The train 50 receives the track circuit transmission data T via the track circuit 4 where the own train exists. When the train 50 exists in the track circuit 4-1, the track circuit transmission data T-1 exists, and when the train 50 exists in the track circuit 4-2, the track circuit transmission data T-2 exists in the track circuit 4-3. In this case, the track circuit transmission data T-3 is received. Train control information C (train control data CD) created by the ground control device 1 is received from the track circuit transmission data T. The train control data CD is processed by the train control device 53 and reflected in the brake control of the train 50.

  Here, when the ground control device 1 creates the transmission packet P, the train control created by the train control information creation unit 112 by creating the timing information (track circuit identification information) TI by the track circuit identification information setting unit 12. A case in which the transmission packet transmission unit 13 transmits the information CI to the transmitters 3-1 to 3-3 via the network 2 will be described.

  The timing information (track circuit identification information) TI is a waiting period from when each transmitter receives the transmission packet P carrying the train control information CI and the timing information TI until the track circuit transmission data T is transmitted to the track circuit 4. It's time. Timing information TI given to the transmitter 3-1 is assumed to be transmission timing dt1, timing information TI given to the transmitter 3-2 is assumed to be transmission timing dt2, and timing information TI given to the transmitter 3-3 is assumed to be transmission timing dt3.

  The transmitter 3-1 receives the transmission packet P carrying the train control information CI and the transmission timing TI (dt1) via the network 2. The transmission timing TI (dt1) is determined by the track circuit transmission data T-1 from the track circuit 4-1 after the transmitter 3-1 receives the train control information CI and the transmission timing (track circuit identification information) TI (dt1). Since the transmitter 3-1 receives the transmission packet P carrying the train control information CI and the transmission timing TI, the transmitter 3-1 sends the track circuit transmission data T-1 to the track circuit. The waiting time until transmission is determined.

  The transmitter 3-1 receives the train control information CI and the track circuit identification information (transmission timing) TI from a transmission timing adjustment unit (not shown) provided in the track circuit transmission data creation unit 32, for example. The progress of dt1) is determined. After the waiting time (dt1) elapses, the transmission timing adjustment unit sends the track circuit transmission data T-1 to the track circuit transmission data transmission means 33. The track circuit transmission data transmission means 33 transmits the track circuit transmission data T-1 to the track circuit 4-1.

  The same processing is performed for the transmitter 3-2 and the transmitter 3-3.

  In the train 50, with respect to the track circuit transmission data T received from the track circuit 4 by the track circuit transmission data receiving unit 51, the train control data detection unit 52 discards information other than the information created by the ground control device 1. About the magnitude | size of the train control data CD, it confirms that the received train control data CD is a regulation magnitude | size by giving to the train control data detection part 52 beforehand as a regulation magnitude | size. The train control data detection unit 52 sends the train control data CD to the train control device 53 only when the train control data CD has a prescribed size, and the train control data CI is train control information CI created by the ground control device 1. After confirmation, it is reflected in the brake control.

  For example, the frequency of creating the train control information CI given to the train 50 by the ground control device 1 is 1 second, the transmission control cycle is 1 second, the train control information CI is all 32 bits, and the track circuit transmission data T is transmitted using the track circuit 4. The speed is 64 bps. The train control information CI (train control data CD) includes 8-bit CRC code as an error detection code.

  The content of the timing information (track circuit identification information) TI created by the individual transmission timing setting unit provided in the track circuit identification information setting means 12 is the number of bits in units of time corresponding to 1-bit transmission at the transmission speed. It represents time. The transmission timing dt1 given to the transmitter 3-1 is 6 bits, the transmission timing dt2 given to the transmitter 3-2 is 18 bits, and the transmission timing dt3 given to the transmitter 3-3 is 12 bits. Among these, for example, 12 bits of transmission timing dt3 correspond to 0.1875 seconds from a transmission rate of 64 bps.

  Each transmitter transmits, for example, track circuit transmission data T to the track circuit by frequency modulation using MSK modulation. Each transmitter transmits “1” and “0” alternately as the synchronization signal ts during the elapse of the waiting time, and after the waiting time elapses, the train control data CD is transmitted only once until the transmission control cycle elapses, or Suppose that it sends repeatedly. Among these, when the train control data CD is transmitted once, the synchronization signal ts is transmitted from the transmission of the train control data CD to the lapse of the transmission control cycle.

  The train control data detection means 52 knows that the train control information (train control data CD) CI created by the ground control device 1 is 32 bits.

  The ground control device 1 creates train control information CI every time a transmission control period of 1 second elapses, and sends the train control information CI together with the timing information TI to each transmitter 3.

  The transmitter 3-1 receives the transmission packet P via the network 2 and receives 32-bit train control information CI and timing information TI having a value of 6 bits. After receiving the train control information CIT and the timing information TI, the transmission timing adjustment unit of the track circuit transmission data creating unit 32 transmits the synchronization signal ts only for the 6-bit waiting time that is the content of the timing information TI. Thereafter, track circuit transmission data T-1 carrying 32-bit train control data CD is transmitted. Further, thereafter, the synchronization signal ts is transmitted until the transmission control period elapses. For this reason, the number of bits of the synchronization signal ts transmitted after the train control data CD is transmitted and before the transmission control period elapses depends on the content of the timing information from the fact that the transmission speed is 64 bps and the number of bits of the transmission control period. It is a value excluding a certain synchronization signal of 6 bits and 32-bit train control data CD, and is determined to be 26 bits by the following equation.

The number of synchronization signal bits until the transmission control period elapses = the number of bits in the transmission control period−the number of synchronization signal bits based on the timing information TI−the number of bits in the train control information CD (1)
= 64-6-32
= 24

  Similarly, since the transmitter 3-2 receives the 32-bit train control information CI and the 18-bit timing information TI via the network 2, the number of bits of the synchronization signal St until the transmission control cycle elapses is expressed by the following equation. 14 bits from (1).

  Further, since the transmitter 3-3 receives the 32-bit train control information CI and the 12-bit timing information TI via the network 2, the number of bits of the synchronization signal ts until the transmission control cycle elapses is expressed by the equation ( From 1), it becomes 20 bits.

As a result, the track circuit transmission data T transmitted to each track circuit during each transmission control cycle is expressed by the following equations (2), (3), and (4). This is shown in FIG.
Track circuit transmission data T-1: synchronization signal 6 bits + train control data CD 32 bits + synchronization signal 26 bits (2)
Track circuit transmission data T-2: synchronization signal 18 bits + train control data CD 32 bits + synchronization signal 14 bits (3)
Track circuit transmission data T-3: synchronization signal 12 bits + train control data CD 32 bits + synchronization signal 20 bits (4)

  When the train 50 exists in the track circuit 4-1, the track circuit transmission data T-1 of the formula (2) is received. The train control data detection unit 52 discards the synchronization signal ts that is not the train control information CI (train control data CD) created by the ground control device 1 in the received track circuit transmission data T-1. Then, the train control data CD32 bits that have not been discarded are transmitted to the train control device 53. The train control device 53 uses the CRC code 8 bits for the train control data CD 32 bits to check for errors. When there is no error, the train control data CD is reflected in the brake control of the train 50. Thereby, the train control information CI for the train 50 created by the ground control device 1 can be correctly reflected in the brake control of the train 50.

  The same applies to the case where the train 50 exists in the track circuit 4-2 and the case where the train 50 exists in the track circuit 4-3.

  Here, consider a case where the train 50 moves from the track circuit 4-1 to the track circuit 4-2 in the middle of the transmission control cycle. It is assumed that the train 50 has passed the boundary of the track circuit by movement at the time when half of the transmission control cycle has passed (track circuit boundary pass timing). This is shown in FIG. Train control data CD1 received while the train 50 exists in the track circuit 4-1 is determined by equation (2). Similarly, the train control data CD2 received while existing in the track circuit 4-2 is determined by Expression (3). Thus, the reception information when the train 50 moves when half of the transmission control cycle has elapsed is expressed by the following equation (5).

Received information = front half of train control data CD1 + rear half of train control data CD2 = synchronization signal 6 bits + 32 bits front side of train control data CD1 + 32 bits rear side of train control data CD2 18 bits + synchronization Signal 14 bits ...... Formula (5)

  The train control data detection unit 52 performs processing on the reception information of Expression (5), and first discards the synchronization signal ts. Next, since the train control data detecting means 52 knows that the train control data CD is 32 bits, among the reception information of the equation (5), the front 26 bits of the train control data CD1 and the track circuit 26 bits. Since the information including the rear 18 bits of the transmission data T-2 bits is 44 bits, it is determined that the information is not the train control information CI (train control data CD) information created by the ground control device 1, and is discarded. Therefore, the train control data detection means 52 does not send the train control data CD to the train control device 53. As a result, the train control device 53 determines that there is no reception information for the transmission control cycle, and controls the train brake using the reception information before the reception control cycle.

  As described above, when the transmission timing information TI is used, the on-board controller of the train receives an information string in which a plurality of pieces of information of only a part of the original train control data CD are received before and after passing the track circuit boundary. However, it was shown that it is possible to detect whether or not the train control data CD is the original.

  Here, the case where the transmission timing is different for the transmitter is shown, but this method is based on detecting that the train control data CD received by the train 50 in one transmission control cycle is the original train control data CD. The transmission timing information TI of the transmitter related to the track circuit may be different for the track circuit in a range in which the train travels during at least one transmission control cycle. The range in this case is the widest range when the train 50 is premised on the maximum speed in the track circuit, and therefore the transmission timing may be different for the range based on the maximum speed.

  Note that the maximum speed is a value limited to the curve or slope of the track, the presence or absence of points or stations, and the like. Under this restriction, the speed value when the train 50 travels on each track circuit is generally called a standard operation curve.

  Next, when the ground control device 1 creates the transmission packet P carrying the train control information CI and the track circuit identification information TI, the individual transmission code DDA which is the track circuit identification information TI is supplied to the track circuit identification information setting means 12. A transmission packet P is generated as a transmission packet P together with the train control information CI generated by the individual transmission code setting unit (not shown) provided by the train control information generation unit 11 and transmitted from the transmission packet transmission unit 13 via the network 2. A second embodiment of the present invention for transmitting to 1-3 will be described.

  The individual transmission code DDA is a pair of codes attached to the front and rear of the train control data CD when each transmitter transmits the train control data CD mounted on the track circuit transmission data T to the track circuit. . The individual transmission code DDA is the train control data detection data DD, and is set to be different from the individual transmission code DDA of the adjacent track circuit.

  The transmitter 3-1 receives a transmission packet P in which the train control information CI1 and the individual transmission code DDA1 are mounted via the network 2. The individual transmission code DDA1 is information attached to the front and rear of the train control data CD1 when the transmitter 3-1 transmits the track circuit transmission data T-1 loaded with the train control data CD1 to the track circuit 4-1. is there. When the individual transmission code adding unit provided in the track circuit transmission data creating means 32 receives the train control information CI1 and the individual transmission code DDA1, the train control is transmitted as the track circuit transmission data T-1 to be transmitted to the track circuit. Information in which the individual transmission code DDA1 is added before and after the data CD1 is created. Then, the transmitter 3 transmits the track circuit transmission data T-1 loaded with the train control data CD1 and the individual transmission code DDA1 from the track circuit transmission data transmission means 33 to the track circuit 4-1.

  The same processing is performed for the transmitter 3-2 and the transmitter 3-3.

  In the train 50, the track control data detection unit 52 discards information other than the information created by the ground control device 1 for the track circuit transmission data T-1 received from the track circuit 4-1, and is before and after the train control data CD1. It is confirmed that the pair of individual transmission codes DDA1 match each other. Only when the individual transmission code DDA1 matches, the train control data detection unit 52 sends the train control data CD1 to the train control device 53, and after confirming that the train control data CD1 is created by the ground control device 1, Reflect in control.

  For example, the frequency of creating the train control information CI given to the train 50 by the ground control device 1 is 1 second, the train control information CI (train control data CD) is 32 bits, and the track using the track circuit 4 Assume that the transmission speed of circuit transmission is 64 bps. The train control information CI (train control data CD) includes 8-bit CRC code as an error detection code.

  The content of the individual transmission code DDA created by the individual transmission code setting unit (not shown) provided in the track circuit identification information setting unit 12 is such that the individual transmission code DDA1 given to the transmitter 3-1 is 4 bits. “0001”, the individual transmission code DDA2 given to the transmitter 3-2 is “0010” with 4 bits, and the individual transmission code DDA3 given to the transmitter 3-3 is “0100” with 4 bits.

  In addition, each transmitter 3 transmits, for example, track circuit transmission data T to the track circuit 4 by frequency modulation using MSK modulation. Each transmitter 3 transmits track circuit transmission data T having a pair of individual transmission codes DDA before and after the train control data CD, and after the transmission of the train control data CD is completed until the transmission control cycle elapses. A synchronization signal ts is transmitted.

  The ground control device 1 creates train control information CI every time a transmission control cycle of 1 second elapses, and sends it to each transmitter 3 together with the individual transmission code DDA.

  The transmitter 3-1 receives the transmission packet P carrying the 32-bit train control information CI1 and the 4-bit individual transmission code DDA1 having a value of “0001” via the network 2. When receiving the train control information CI1 and the individual transmission code DDA1, the individual transmission code adding unit (not shown) provided in the track circuit transmission data creating means 32 is “0001” in four bits before and after the 32-bit train control data CD. 40-bit track circuit transmission data T-1 to which the individual transmission code DDA1 having the value "is added is created. The track circuit transmission data transmission means 33 transmits 40-bit track circuit transmission data T-1 to the track circuit 4-1. Further, thereafter, the synchronization signal ts is transmitted until the transmission control cycle elapses. Therefore, the number of bits of the synchronization signal ts transmitted before the transmission control period elapses is a value excluding 40-bit information because the transmission speed is 64 bps, and is determined to be 24 bits by the following equation (6). .

The number of synchronization signal bits until the transmission control period elapses = the number of bits in the transmission control period−the number of bits in the train control data CD−the number of bits in the individual transmission code DDA−the number of bits in the individual transmission code DDA.
= 64-40
= 24

  Similarly, since the transmitter 3-2 receives the 32-bit train control information CI2 and the individual transmission code DDA2 (TI2) having a value of “0010” in 4 bits via the network 2, the transmission control period elapses. The number of bits of the synchronization signal ts is 24 bits from Equation (6).

  Also, the transmitter 3-3 receives the sub-control information CI3 of 32 bits and the individual transmission code DDA3 having a value of “0100” in 4 bits via the network 2, so that the transmission control period elapses until the transmission control cycle elapses. The number of bits of the synchronization signal ts is 24 bits from Equation (6).

  Track circuit transmission data T transmitted to each track circuit 4 during each transmission control period is expressed by the following equations (7), (8), and (9). This is shown in FIG.

Track circuit transmission data T-1:
(Individual transmission code DDA1) 4 bits (0001) + (Train control data CD1) 32 bits + (Individual transmission code DDA1) 4 bits (0001) + (Synchronization signal ts) 24 bits (7)
Track circuit transmission data T-2:
(Individual transmission code DDA2) 4 bits (0010) + (Train control data CD2) 32 bits + (Individual transmission code DDA2) 4 bits (0010) + (Synchronization signal ts) 24 bits (8)
Track circuit transmission data T-3:
(Individual transmission code DDA3) 4 bits (0100) + (Train control data CD3) 32 bits + (Individual transmission code DDA3) 4 bits (0100) + (Synchronization signal ts) 24 bits (9)

  When the train 50 exists in the track circuit 4-1, the train 50 (on-board control device 5) receives the track circuit transmission data T-1 of the formula (7). The train control data detection unit 52 discards the train control information CI1 created by the ground control device 1 and the synchronization signal ts that is not the individual transmission code DDA1 in the received track circuit transmission data T-1. It is confirmed that the 4-bit individual transmission code DDA1 before and after the 32-bit train control data CD1 matches, and if not, the train control data CD1 is discarded. Then, the 32-bit train control data CD1 that has not been discarded is transmitted to the train control device 53. The train control device 53 checks the presence / absence of an error for the 32-bit train control data CD1 using an 8-bit CRC code. When there is no error, the train control data CD1 is reflected in the brake control of the train 50. Thereby, the train control information CI1 (train control data CD1) for the train 50 created by the ground control device 1 can be correctly reflected in the brake control of the train 50.

  The same applies when the train 50 exists in the track circuit 4-2 and the train 50 exists in the track circuit 4-3.

  Here, consider a case where the train 50 is moved from the track circuit 4-1 to the track circuit 4-2 in the middle of the transmission control cycle. It is assumed that the train 50 has passed the boundary of the track circuit when half of the transmission control cycle has elapsed. The correspondence in this case will be described with reference to FIG.

  Track circuit transmission data T-1 (FIG. 7A) received while the train 50 exists in the track circuit 4-1 is determined by the equation (7). Similarly, the track circuit transmission data T-2 (FIG. 7B) received while existing in the track circuit 4-2 is determined by the equation (8). Thus, the train 50 has half the transmission control cycle. The reception information (FIG. 7C) when the track circuit boundary is moved at the time when it has elapsed is expressed by the following equation (10).

Reception information = front half of track circuit transmission data T-1 + second half of track circuit transmission data T-2 = (individual transmission code DDA1) 4 bits (0001) + (track circuit transmission data T-1) 32 bits front side 28 bits + (track circuit transmission data T-2) 32 bits rear 4 bits + (individual transmission code DDA2) 4 bits (0010) + (synchronization signal ts) 24 bits (10)

  The train control data detection means 52 performs processing on the reception information of Expression (10), discards the synchronization signal ts, and separates 4 bits of the reception information of Expression (10) before the train control data CD1. The contents of the transmission code DDA1 and the contents of the 4-bit individual transmission code DDA2 behind the train control data CD2 are collated. As a result of collating 4-bit information (0001) and 4-bit information (0010) from equation (10), they do not match. Since the individual transmission code DDA1 and the individual transmission code DDA2 do not match, the train control data detection means 52 discards the train control data CD. Therefore, the train control data detection means 52 does not send the train control data CD to the train control device 53. As a result, the train control device 53 determines that there is no reception information of the transmission control cycle, and controls the train brake using the reception information before the reception control cycle.

  As described above, when the individual on-board transmission code DDA is used, the on-board controller of the train receives an information string obtained by combining a plurality of pieces of information of only a part of the original train control data CD before and after passing through the track circuit boundary. However, it was shown that it is possible to detect whether or not the train control data CD is the original.

  In addition, although the case where the individual transmission code is different for each transmitter is shown here, this method indicates that the train control data CD received by the train 50 in one transmission control cycle is the original train control data CD. By detecting, it is sufficient that the contents of the individual transmission codes of the transmitters related to the track circuits are different for the track circuits in the range where the train travels during at least one transmission control cycle. The range in this case is the widest range when the train 50 is premised on the maximum speed in the track circuit. Therefore, the individual transmission code may be different for the range based on the maximum speed.

  When the train control information transmission system according to the present invention described above receives an information string in which the on-board controller of the train before and after passing the track circuit boundary receives a plurality of pieces of information of only a part of the original train control data CD However, it has been shown that it is possible to provide a system and apparatus that can detect whether or not the train control data CD is original.

  In the above description, the transmission packet P carrying the train control information CI and the track circuit identification information TI is sent from the ground control device 1 to the network 2, and each transmitter 3 receives the transmission packet P addressed to itself and transmits this transmission packet P. The example in which the train control data CD and the train detection data detection data DD are created from the train control information CI and the track circuit identification information TI mounted in the packet to create the track circuit transmission data T has been described. However, by notifying each transmitter 3 in advance of the track circuit identification information TI and storing the corresponding train detection data detection data DD in each transmitter 3, the transmission packet P addressed to itself is received. Since the transmitter 3 can create the track circuit transmission data T simply by reading the train control information CI, it is not necessary to mount the track circuit time identification information TI in the transmission packet P.

The figure explaining the outline | summary of a structure of the train control information transmission system concerning this invention. The figure explaining the example of the structure of the transmission packet used in the train control system concerning this invention, and track circuit transmission data. The figure explaining the structure of the apparatus which comprises the train control information transmission system shown in FIG. The figure explaining the time relation of track circuit transmission data T transmitted to each track circuit during each transmission control period used in the 1st example of the present invention. The figure explaining the receiving information when a train passes the track circuit boundary in the middle of the transmission control period in 1st Example of this invention. The figure explaining time relation of track circuit transmission data T transmitted to each track circuit during each transmission control period used in the 2nd example of the present invention. The figure explaining the receiving information when a train passes the track circuit boundary in the middle of the transmission control period in 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ground control apparatus 11 ... Train control information preparation means 12 ... Track circuit identification information setting means 13 ... Transmission packet transmission means 131 ... Transmission packet creation part 132 ... Transmission packet transmission part 2 ... Network 3 ... Transmitter 31 ... Transmission packet reception Means 32 ... Track circuit transmission data creation means 33 ... Track circuit transmission data transmission means 4 ... Track circuit 5 ... Train control device 50 ... Train 51 ... Track circuit transmission data reception means 52 ... Train control data detection means 53 ... Train control device CD ... Train control data CI ... Train control information DD ... Train control data detection data DDA ... Individual transmission code P ... Transmission packet T ... Track circuit transmission data TI ... Track circuit identification information

Claims (16)

Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device via the track circuit,
The ground control device sends the train control information and the track circuit identification information for identifying the track circuit to the transmitter,
The track circuit identification information is a waiting time from when each transmitter receives the track circuit identification information until the track circuit transmission data is transmitted to the track circuit, and has an arbitrary length characterized for each track circuit. Timing information,
Each transmitter, the train control data for controlling the train control information or we created train received,
The train control data detection data created by the timing information is generated before the train control data is added to the track circuit transmission data to be transmitted to the track circuit,
The train control information transmission system, wherein the on-board controller detects train control data using train control data detection data from track circuit transmission data received from the track circuit transmission. The train control information transmission system according to claim 1, wherein the on-board controller detects data after the train control data detection data as train control data from the received track circuit transmission data . The train control information transmission system according to claim 2 , wherein the on-board control device discards the train control data when the detected train control data does not match the length of the train control data registered in advance. . Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device via the track circuit,
The ground control device sends the train control information and the track circuit identification information for identifying the track circuit to the transmitter,
The track circuit identification information has an individual transmission code characterized for each track circuit,
Each transmitter is train control data for controlling a train created from the received train control information.
The train control data detection data created by the individual transmission code is created as a track circuit transmission data attached to the front and rear pairs of the train control data and transmitted to the track circuit,
The onboard control device, the track circuit <br/> the train control information transmission systems that, and detecting the train control data by using the train control data detection data from the track circuit transmission data received from the transmission. The on-board control device is characterized by detecting data between train control data detection data as train control data when train control data detection data attached before and after the received track circuit transmission data is a pair of data. The train control information transmission system according to claim 4 . 6. The train control information transmission system according to claim 5 , wherein the on-board controller discards the train control data when the detected train control data does not match the length of the train control data registered in advance. . Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the ground control device constituting the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device through the track circuit,
Train control information creating means for creating train control information;
Track circuit identification information setting means for setting track circuit identification information;
A transmission packet including train control information and track circuit identification information is created, and a transmission packet transmitting means for sending to each transmitter connected to each track circuit via a network ,
The track circuit identification information is a waiting time from when each transmitter receives the track circuit identification information to when the track circuit transmission data based on the track circuit identification information is transmitted to the track circuit. A ground control device characterized by being characterized timing information of an arbitrary length . Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device in ground control device constituting a configured train control information transmission system of the train control information received from the ground controller in each control cycle from a plurality of transmitters for transmitting over the track circuit against train control unit,
Train control information creating means for creating train control information;
Track circuit identification information setting means for setting track circuit identification information;
A transmission packet including train control information and track circuit identification information is created, and a transmission packet transmitting means for sending to each transmitter connected to each track circuit via a network,
The ground control apparatus according to claim 1, wherein the track circuit identification information is an individual transmission code characterized for each track circuit . Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the transmitter constituting the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device via the track circuit,
Transmission packet receiving means for receiving transmission packets addressed to the local station on the network;
Track circuit transmission data creating means for creating track circuit transmission data comprising train control data and train control data detection data based on train control information and track circuit identification information of the received transmission packet;
Track circuit data transmitting means for transmitting track circuit transmission data to the track circuit; and
With
The track circuit identification information is a waiting time from when each transmitter receives the track circuit identification information until the track circuit transmission data is transmitted to the track circuit. Shin device sending you wherein <br/> be the timing information. The transmitter according to claim 9 , wherein the train control data detection data is a timing that is added before the train control data and has a different time from an adjacent track circuit. Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device in the transmitter constituting a configured train control information transmission system of the train control information received from the ground controller in each control cycle from a plurality of transmitters for transmitting over the track circuit against train control unit,
Transmission packet receiving means for receiving transmission packets addressed to the local station on the network;
Track circuit transmission data creating means for creating track circuit transmission data comprising train control data and train control data detection data based on train control information and track circuit identification information of the received transmission packet;
Track circuit data transmitting means for transmitting track circuit transmission data to the track circuit; and
With
The track circuit identification information, a transmitter, characterized in <br/> be individual transmission codes characterized for each track circuit. The transmitter according to claim 11, wherein the train control data detection data is a pair of data that is attached before and after the train control data and is different from adjacent track circuits . Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the on-board control device constituting the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device via the track circuit,
Means for receiving track circuit transmission data from the track circuit;
Train control data detection means for recognizing train control data detection data from the received track circuit transmission data and detecting train control data based on the recognized train control data detection data;
Have
The train control data detection data is a waiting time from when each transmitter receives track circuit identification information until the track circuit transmission data is transmitted to the track circuit, and is an arbitrary length characterized for each track circuit. train control unit you wherein <br/> that have been created on the basis of the timing information. The train control data detection means recognizes the data following the timing as the train control data when the train control data detection data is the timing added before the train control data, and the train control data that has been recognized is registered in advance. 14. The on-board control device according to claim 13, wherein the on-board control device is means for discarding the data when the control data length differs. Connected to and transmitted via a network with an on-board control device mounted on a train traveling on multiple track circuits, a ground control device that creates train control information to be given to the on-board control device of the train, and the ground control device In the on-board control device constituting the train control information transmission system composed of a plurality of transmitters that transmit the train control information received from the ground control device for each control cycle to the on-board control device via the track circuit,
Means for receiving track circuit transmission data from the track circuit;
Train control data detection means for recognizing train control data detection data from the received track circuit transmission data and detecting train control data based on the recognized train control data detection data;
Have
The train control data detection data is created based on individual transmission codes characterized for each track circuit
An on-vehicle control device. The train control data detection means recognizes the data between the train control data detection data as the train control data when the train control data detection data is a pair of data different from the adjacent track circuit that is attached before and after the train control data. The on-vehicle control device according to claim 15, wherein the on-vehicle control device is a means.

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