JP2019064565A - Train control system - Google Patents

Abstract

To provide a train control system having a low-cost structure capable of securing an anti-interference performance with low electric power and using a track circuit as an information transmission path.SOLUTION: The train control system includes a plurality of track circuits (RC0, RC1, RC2), a ground device (4) supplying control information to each track circuit, and an on-train device (8) mounted on a train (1). A transmitter (6) transmitting the control information applied from the ground device with respect to a short and small track circuit section (SR) composed of a part of a section of the track circuit is provided for each track circuit. The on-train device (8) receives the control information at the short and small track circuit section (SR) for each track circuit, generates a speed pattern of the corresponding track circuit on the basis of the received control information, and instructs the speed of the train (1) according to the generated speed pattern. A signal current for transmitting control information generated from the transmitter (6) may have the current amount by which an anti-interference performance can be secured in the short and small track circuit section (SR).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a train control system using a track circuit as an information transmission line, and more particularly to a train control system using a short track circuit section which is a part of a section corresponding to the track circuit as an information transmission line.

  In an ATS (automatic train stop) device for automatically controlling the speed of a train traveling on a railway track, as a method for transmitting control information from an on-ground device to an on-board device, transponders A system (for example, Patent Document 1) in which a transmission coil is disposed and a system (for example, Patent Document 2) in which control information is transmitted on a track circuit are known. In the former method, since it is necessary to arrange a large number of transponders over the entire area of the target railway section, it is costly, and transponders are not arranged corresponding to the stop position in case of emergency stop of the train. Is difficult to control.

  On the other hand, in the latter scheme, control information is continuously transmitted to the train in the entire range from the beginning to the end of the track circuit via a transmitter installed at one end (start or end) of one track circuit. Because there is no inconvenience like the former scheme because However, in the latter method, since the track circuit is a transmission line, transmission taking into consideration signal attenuation due to leakage conductance of the track circuit, noise due to retrace current flowing through the track circuit, disturbance due to electric motor control of trains, etc. It needs to be a signal output. Therefore, there are restrictions on the length of the track circuit and the frequency for signal transmission, and it is necessary to perform signal transmission with sufficient power / current necessary to ensure the anti-jamming performance. For example, in a track section where train density is relatively high, the length of one track circuit is about 300 to 400 m, but it is necessary to perform signal transmission with power corresponding to that length. In addition, in the line section where train density is relatively low (or the distance between stations is long), the length of one track circuit may be 1000 m or more, and in this case also, higher power corresponding to that length It is necessary to carry out signal transmission. In addition, particularly in long and large orbit circuits (for example, 1000 m or more), only a low frequency of less than 1 kHz can be used because of loss of transmission signal (because loss is inversely proportional to frequency), the amount of information that can be transmitted Is extremely small. Therefore, there is a problem that advanced ATS technology can not be applied to a sparsely populated railway where the distance of one track circuit is long.

Unexamined-Japanese-Patent No. 11-1145760 Unexamined-Japanese-Patent No. 11-1145760

  The present invention has been made in view of the above-mentioned point, and provides a train control system using a track circuit as an information transmission path with a low-cost configuration capable of securing the anti-jamming performance with small power, Another object of the present invention is to increase the signal transmission frequency to increase the amount of information that can be transmitted even in a long track circuit.

  The present invention corresponds to each track circuit in a train control system including a plurality of track circuits, a ground device for supplying control information to each track circuit, and an on-board device mounted on a train. A transmission device for transmitting control information supplied from the ground apparatus to a short track circuit section consisting of a part of a section is provided, and the on-vehicle apparatus is configured to transmit the control information in the short track circuit section for each track circuit. Based on the received control information, a speed pattern in the corresponding track circuit is generated, and the speed of the train is indicated according to the generated speed pattern.

  According to the present invention, since each track circuit is provided with a transmitting device for transmitting control information supplied from the ground device to a short track circuit section consisting of a part of a section corresponding to the track circuit, the transmission The signal current for control information transmission generated from the device should be a current amount that can ensure the anti-jamming performance in the short track circuit section, and therefore it is required to secure the necessary current amount over the entire track circuit Compared to the conventional device, it can be configured with much less power. Further, in the on-vehicle device, the speed pattern in the corresponding track circuit is generated based on the control information received in the short track circuit section, and the speed of the train is indicated according to the generated speed pattern. Even in the configuration in which the control information is received only in, it is possible to perform speed control over the entire section corresponding to the track circuit. Therefore, according to the present invention, in the train control system using the track circuit as the information transmission path, it is possible to provide a low cost configuration capable of securing the anti-jamming performance with small power. Further, even in a long track circuit, the distance for transmitting control information is only in the short track circuit section, so that the frequency for signal transmission can be increased, and the amount of transmission of control information can be increased. Therefore, even in a sparsely populated railway where the distance of one track circuit is long, the amount of transmission of control information can be easily and easily increased, so that advanced ATS technology can be applied.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows one Example of the train control system which concerns on this invention. The graph which shows an example (example of generation | occurrence | production of a speed pattern) of the speed control of the train performed by the same Example. The block diagram which shows the modification of the train control system which concerns on this invention. The graph which shows an example (generation example of a speed pattern) of speed control of the train performed by the modification. The block diagram which shows the example in which a short track circuit section is set up in the middle of a track circuit. The block diagram which shows the Example which arranges the additional line only for signal transmission corresponding to a short track circuit area.

  A plurality of known track circuits RC0, RC1, RC2,... Using the rails 2a and 2b on which the train 1 travels throughout the entire railway line area to which the train control system according to one embodiment of the present invention is applied. Are formed continuously. FIG. 1 shows an example in which the track circuits RC0, RC1, RC2,... Are composed of double track type track circuits, and in the rails 2a, 2b, the track circuits RC0, RC1, RC2,. Rail insulation 3 is provided at the boundary. Also, as is well known, a traffic signal is provided at the boundary between track circuits RC 0, RC 1, RC 2,..., And the presence or absence of a train on the track circuit is detected to control the traffic signal closed. Although transmitters and receivers are provided in each track circuit RC0, RC1, RC2,..., These known devices are not shown for convenience.

  The present invention is characterized in that, in each track circuit RC0, RC1, RC2,..., A short track circuit section SR consisting of a part of a section corresponding to the track circuit is set. In the example of FIG. 1, the traveling direction of the train 1 is the direction indicated by the arrow F, and a short track circuit section SR is set at the start end of the section corresponding to each track circuit RC0, RC1, RC2,. As is known, the length of each track circuit RC0, RC1, RC2,... Is, for example, about 300 to 400 m in a train section where train density is relatively high, and train density is relatively low. It may be 1000 m or more in the line section, and is arbitrarily determined according to the design of the line section. On the other hand, the length of the short and small track circuit section SR according to the present invention forms a part of the section corresponding to the track circuit regardless of the length of the corresponding track circuit RC0, RC1, RC2,. It may be a relatively short fixed distance (for example, about 100 m).

  Each short track circuit section SR is provided with a transmitter 6 for transmitting control information supplied from the ground device 4 onto the short track circuit section SR. The ground device 4 is installed at the central management office, and supplies digitally encoded control information to the controller 5 of each of the remote track circuits RC0, RC1, RC2,. The controller 5 of each track circuit RC1, RC2,... Takes in the control information given to the corresponding track circuit based on the section ID (track circuit ID) included in the control information on the control line 7, A digitally encoded transmission signal according to the taken control information is selected from a predetermined carrier frequency (for example, an appropriate frequency selected from a band of about 5 to 20 kHz, or a band higher than several tens to 100 kHz). Modulated at a frequency of The transmission signal (control information) generated from the controller 5 is given to the corresponding transmission device 6. In the example of FIG. 1, the transmitter 6 includes a transmitter 6a and a series resonant circuit 6b. In general, the transmitter 6a is disposed at the beginning of the short track circuit section SR, and the series resonant circuit 6b is disposed at the end. The transmitter 6a is composed of an impedance bond, and supplies the transmission signal (control information) to the rails 2a and 2b of the short track circuit section SR. The series resonant circuit 6b is connected between the rails 2a and 2b of the short track circuit section SR, and its resonant frequency is set to the carrier frequency of the transmission signal. Since the series resonant circuit 6b has an impedance minimum at the resonant frequency, the rails 2a and 2b are shorted by the series resonant circuit 6b (that is, the track circuit is shorted) with respect to the transmission signal (control information). A circuit loop LP for transmitting a signal (control information) is formed through the rails 2a and 2b of the short and small track circuit section SR. Therefore, the portions of the rails 2a and 2b corresponding to the short track circuit section SR also form part of the transmitter 6.

  An on-board device 8 is mounted on the train 1. When the train 1 passes the short track circuit section SR, the on-board device 8 of the train 1 receives the transmission signal (control information) of the predetermined carrier frequency flowing on the rails 2a and 2b via the antenna or the receiving coil. And detects and decodes the digital code included in the transmission signal (control information). Then, the on-vehicle device 8 generates a speed pattern in the corresponding track circuit (RC0, RC1, RC2,...) Based on the control information included in the decoded digital code, and generates the generated speed pattern. Indicate the speed of the train 1 according to the pattern. This speed indication method is a method of prompting the driver to drive at the indicated speed by displaying the indicated speed on the driver's seat panel of the train 1, or automatically controlling the speed of the train 1 to the indicated speed or automatically Any manner may be adopted, such as the manner of stopping (ie, ATS). In addition, when performing ATS, you may employ | adopt any control system of a ground-based type or a vehicle-centered type.

  According to the above embodiment, since the transmitting device 6 for transmitting the control information given from the ground device 4 is provided in the short track circuit section SR consisting of a part of the section corresponding to one track circuit, The signal current for control information transmission may be any amount of current that can ensure the anti-jamming performance in the short track circuit section SR. Therefore, the power required to generate a transmission signal for control information in the short track circuit section SR can be configured with considerably smaller power than in the case of securing a necessary amount of current over the entire area of one track circuit (eg RC1). it can. In the on-vehicle device 8, the speed pattern in the corresponding track circuit (for example, RC1) is generated based on the control information received in the short track circuit section SR, and the speed of the train 1 is indicated according to the generated speed pattern. Therefore, even in the configuration in which control information is received only in the short track circuit section SR, speed control / instruction can be performed over the entire section corresponding to one track circuit (for example, RC1). In addition, since the signal transmission distance (short and short track circuit section SR) is short, the carrier frequency for control information transmission can be made relatively high (about 5 to 20 kHz, or even higher, about several 10 to 100 kHz), and advanced digital Suitable for ATS applications. Therefore, advanced digital ATS can be adopted at low cost even in a railway with a long one track circuit (for example, a railway in a sparse area or a long distance railway). In particular, in the conventional digital ATS, the carrier frequency for control information transmission is at most about 20 kHz at the highest, but according to the present invention, it is sufficient to flow the transmission signal in the short track circuit section SR. A higher carrier frequency of about several 10 to 100 kHz can be used, and a carrier frequency of 100 kHz or more can also be used, thereby enabling multi-information transmission.

  Next, an example of the information contained in the control information given from the ground device 4 to the on-vehicle device 8 will be (1) a section ID (track circuit ID) specifying the track circuit, (2) the track circuit Initial velocity (initial velocity) of the section corresponding to the (3) initial velocity distance indicating the distance for maintaining the initial velocity of the section corresponding to the track circuit, (4) at the end of the section corresponding to the track circuit (5) the section length corresponding to the track circuit (total length of section), (6) the slope of the section corresponding to the track circuit, and the like. The initial velocity of the above (2), the initial velocity distance of the above (3), and the ending velocity of the above (4) are variable values, and according to the signal indication in the track circuit or the operation situation in the line section Their respective values are determined by the ground device 4 or by higher devices (e.g. interlocking devices). In addition, since the total length in the above (5) and the gradient in the above (6) are fixed values unique to the section corresponding to the track circuit, they may be stored in advance in the memory in the on-vehicle device 8 In that case, it may not be included in the control information. In addition, the gradient of said (6) is used as a conversion variable when calculating the traveling distance of the said train in the on-board apparatus 8. FIG. Further, the control information may appropriately include other necessary information such as the distance to the traffic light to be stopped, the information indicating the signal indication, and the like.

  Next, an example of generation of the velocity pattern by a computer provided in the on-board device 8 and velocity control / instruction based on the velocity pattern will be described with reference to FIG. FIG. 2 shows the case where the signal indication of the closed section corresponding to the track circuit RC1 is G (green), and the signal indication of the closed section corresponding to the inward track circuit RC2 is Y (yellow). It mainly shows the velocity pattern generated for The on-board device 8 acquires the control information while the train 1 passes through the short track circuit section SR set at the beginning of the track circuit RC1. The acquired control information is temporarily stored in the memory in the on-vehicle device 8, and a speed pattern is generated based on the temporarily stored control information. In the case of a ground-based control method, the acquired control information may include the initial velocity V1s of (2), the initial velocity distance CD1 of (3), and the ending velocity V1e of (4). . For example, the initial speed V1s is set to the same value as the end speed of the previous track circuit (its signal display is G), and the train 1 maintains the current speed while traveling on the short track circuit section SR. Do. The on-vehicle device 8 executes the application program according to the present invention by the computer to maintain the speed pattern such that the initial speed V1s is maintained from the beginning of the track circuit RC1 to the end of the initial speed distance CD1. A velocity pattern may be created such that the transition from the initial velocity V1s to the ending velocity V1e is made continuously from the end of the initial velocity distance CD1 to the end of the track circuit RC1. Further, since the on-vehicle device 8 acquires the control information at the start end of the track circuit RC1, the on-vehicle device 8 starts calculating the traveling distance based on the current speed, and calculates the calculated traveling distance as The train 1 is used as data indicating the current traveling position of the section of the track circuit RC1. Then, the on-vehicle device 8 instructs the speed to maintain the initial speed V1s until the current travel position reaches the end of the initial speed distance CD1 according to the created speed pattern, and the current travel position is the initial speed distance When the end of the CD1 is reached, the speed is instructed to continuously change from the speed V1s to the end speed V1e. In addition, in FIG. 2, CD2 illustrates the initial velocity distance of the following track | orbit circuit RC2.

  In the above embodiment, the short and small track circuit section SR is set at the beginning of the section corresponding to the track circuit, but the present invention is not limited to this. As shown in FIG. The track circuit section SR may be set. In this case, the configurations of the controller 5 and the transmitting device 6 provided corresponding to the respective short and short track circuit sections SR are the same as those in FIG. 1, but the control information acquired by each controller 5 is the short and short track circuit section SR. It does not relate to the provided track circuit (for example, RC0), but relates to the next, that is, the inward adjacent track circuit (for example, RC1). Therefore, while passing through the short track circuit section SR set at the end portion of a track circuit (for example, RC0), the on-vehicle device 8 controls the track circuit (for example, RC1) adjacent to the next inward. Information is received, and based on the received control information, a velocity pattern in the inwardly adjacent track circuit (for example, RC1) is created as a velocity pattern in the track circuit corresponding to the control information.

  FIG. 4 is a graph showing an example of the generation of the velocity pattern by the computer of the on-vehicle apparatus 8 and an example of velocity control / instruction based on the velocity pattern in the embodiment of FIG. For example, the on-board device 8 acquires the control information while the train 1 passes through the short track circuit section SR set at the end of the track circuit RC0. The acquired control information is temporarily stored in the memory in the on-vehicle device 8, and a velocity pattern in the track circuit RC1 adjacent to the inside of the track circuit RC0 is generated based on the temporarily stored control information. The method of generating the velocity pattern based on the control information may be similar to the method described with reference to FIG.

  For example, in the case of practicing the present invention in a single track section, the arrangement of the short track circuit section SR for one of the upstream and the downstream is as shown in FIG. 3, and the arrangement of the short track circuit section SR for the other As shown in. Therefore, when the present invention is carried out in a single track section, the correspondence between track circuits RC0, RC1, RC2,... And short track circuit section SR depends on the traveling direction of train 1 as shown in FIG. Switch as shown.

  The short track circuit section SR may be set in the middle of the section corresponding to the track circuit. FIG. 5 shows an example in which the short and small track circuit section SR is set in the middle of the section corresponding to the track circuit RC1. For example, the short track circuit section SR may be set corresponding to a place where the ground device 4 needs to give a special instruction to the place, such as a place where the track rails 2a and 2b are curved. As described above, the controller 5 and the transmitting device 6 are provided corresponding to the short and small track circuit section SR, and control information related to the short and small track circuit section SR is given from the ground device 4 through the control line 7 It is received by the controller 5. The transmitter 6 may be configured by the transmitter 6a and the series resonant circuit 6b as described above. However, since rail insulation is not provided in the middle of the track circuit, the rail at one end of the short track circuit section SR on the side of the transmitter 6a in order to prevent leakage of the transmission signal to the outside of the set short track circuit section SR. A series resonant circuit 6c is connected between 2a and 2b. The resonant frequency of this series resonant circuit 6c is the carrier frequency of the transmission signal, as in the case of the series resonant circuit 6b. In this case, the on-board device 8 of the train 1 has a speed pattern starting from the middle of the track circuit RC1 based on the control information received from the transmitter 6 corresponding to the short track circuit section SR set in the middle of the track circuit RC1. Create

  The short and small track circuit section SR set in the middle of the section corresponding to one track circuit may be set not in all the track circuits but in a section corresponding to at least one required track circuit. A plurality of short track circuit sections SR may be set corresponding to one track circuit. In that case, the track circuit ID included in the control information is a plurality of short track circuit sections in one track circuit. Of course, each of the SRs is an ID that can be identified.

  In the above embodiment, for example, the initial velocity V1s of (2), the initial velocity distance CD1 of (3), the ending velocity V1e of (4), etc., contained in the control information supplied from the ground device 4 Based on the information, the speed patterns in the track circuits RC0, RC1, RC2,... Are respectively created by real time processing of a computer provided in the on-vehicle device 8. However, the method for the on-vehicle device 8 to generate the speed pattern is not limited to this, and any configuration may be adopted. For example, in the case of the on-board main control method, closed storage sections (sections of track circuits RC0, RC1, RC2,...) Over the entire line section in which the train 1 travels in the storage device included in the on-vehicle device 8 Information on the distance and the gradient, etc. and the velocity pattern corresponding to the signal indication are stored in advance, and from the ground device 4, each track circuit RC0, RC1, RC2, ... (or each short track circuit section SR The track information of (1) is included in the control information supplied to the controller 5). When the on-board unit 8 receives control information from the transmitter 6 while the train 1 passes the short track circuit section SR of one track circuit, it corresponds to the track circuit ID included in the received control information. The velocity pattern of the track circuit (any of RC0, RC1, RC2,...) Is read out from the storage device so that the velocity pattern is generated. In this case, the control information supplied from the ground device 4 includes information such as the initial velocity V1s of (2), the initial velocity distance CD1 of (3), and the ending velocity V1e of (4). You do not have to.

  In each of the above embodiments, the signal for control information transmission is fed to the portions of the rails 2a and 2b corresponding to the respective short and short track circuit sections SR. However, the present invention is not limited to this. Then, an additional line dedicated to signal transmission may be arranged, and a signal for transmitting control information may be supplied to the additional line. FIG. 6 shows an embodiment in which the additional line 6d dedicated to signal transmission is arranged along the portions of the rails 2a and 2b in the range corresponding to the short track circuit section SR. The additional lines 6d are arranged along the portions of the rails 2a and 2b in the range corresponding to the short track circuit section SR, and consist of conducting wires connected in a single loop as a whole. The loop of the additional wire 6d intersects the substantially middle portion of the short and small track circuit section SR so that the rails of the rails 2a and 2b in the range corresponding to the short and small track circuit section SR are divided into two The loop portion LP1 and the second loop portion LP2 are made to correspond to each other. As a result, for the individual rails 2a and 2b, the signal flow in the first loop portion LP1 and the signal flow in the second loop portion LP2 are reversed, and mutual electromagnetic induction between the rails 2a and 2b and the additional wire 6d The components are offset. Therefore, there is no adverse effect due to mutual electromagnetic induction between the retrace current and / or other control signal current flowing through rails 2a and 2b and the signal current for transmitting control information flowing through appendage 6d. There is. The transmission signal (control information) generated from the corresponding controller 5 is supplied to the loop of the additional wire 6 d in each short track circuit section SR. Thus, when the transmission signal (control information) flows through the loop of the additional wire 6d in the short and small track circuit section SR and the train 1 passes through the short and small track circuit section SR, the transmission signal (control information) flows through the additional line 6d. Is received by the on-vehicle device 8. Therefore, in the embodiment of FIG. 6, the loop of the additional line 6 d disposed corresponding to the short track circuit section SR functions as the transmitting device 6.

  In each of the above embodiments, the track circuits RC0, RC1, RC2,... Are described as consisting of double track type track circuits, but the present invention is not limited to this and may be formed of single track type track circuits. .

1 Train 2a, 2b Rail 3 Rail Insulation RC0, RC1, RC2, ... Track Circuit SR Short Small Track Circuit Section 4 Ground Device 5 Controller 6 Transmitter 6a Transmitter 6b, 6c Series Resonant Circuit 6d Add 7 Control Line 8 Car Upper device

Claims (6)

With multiple track circuits,
A ground device for supplying control information to each track circuit;
In a train control system comprising an on-board device mounted on a train,
A transmitter for transmitting control information supplied from the ground device to a short track circuit section consisting of a part of a section corresponding to the track circuit is provided for each track circuit;
The on-vehicle device receives the control information in the short track circuit section for each track circuit, generates a speed pattern in the corresponding track circuit based on the received control information, and follows the generated speed pattern. A train control system characterized by indicating a speed. The short and small track circuit section is set at the beginning or end of the track circuit,
When the short track circuit section is set at the beginning of the track circuit, the on-vehicle device generates a speed pattern in the track circuit as the speed pattern in the corresponding track circuit, and the short track circuit section The train control system according to claim 1, wherein when the track circuit is set to a terminal portion of the track circuit, a speed pattern in the track circuit adjacent to the inside of the track circuit is generated as the speed pattern in the corresponding track circuit. The short track circuit section is set in the middle of the track circuit in at least one track circuit,
The on-vehicle device starts from the middle of the track circuit as a speed pattern in the corresponding track circuit based on control information received from the transmitter corresponding to the short track circuit section set in the middle of the track circuit. The train control system of claim 1, generating a starting velocity pattern.   The train control system according to any one of claims 1 to 3, wherein the transmission device includes a resonant circuit that shorts a track circuit in response to the control information in the short track circuit section.   The train control system according to any one of claims 1 to 4, wherein the control information includes information defining an initial speed and an end speed of the speed pattern to be generated and a section length of the corresponding track circuit.   The train control system according to claim 5, wherein the control information further includes information indicating a slope of a track corresponding to the track circuit.

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