JP4132493B2 - Automatic train control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, when a plurality of trains travel at a high speed on a railway line composed of a series of blocked sections, control information such as a speed limit can be set in various lengths according to each operation plan and traveling state. The present invention relates to an automatic train control device for performing travel control of each train while transmitting as a telegram.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is known an automatic train control (hereinafter referred to as ATC) system for automatically sending safety information such as an appropriate speed limit and traveling position to a train traveling on a railway line. In this ATC system, a plurality of closed sections are set in order on the route, and the ground device is installed in a station or a device room beside the track, and connected to the track circuit of each blocked section via a transmission line. is there.
[0003]
According to this ATC system, a series of security information is sequentially sent to the train using each block section as a control unit. These pieces of security information are transmitted to the train in units of track circuits corresponding to the respective closed sections, and these are received by an on-board device mounted on the train and used for controlling the corresponding train. For this reason, it takes a certain amount of time to receive information from the transmission and further to control the train, and the on-board device processes commands included in acceleration / deceleration and other information within the required time. In other words, within the time passing through one track circuit, the information necessary for each track circuit is processed and stable running control is always realized.
[0004]
The time required for such train control is restricted to the transmission time of the control time with the longest information length. For this reason, the on-board device is configured to discriminate the command content from the ATC device within the required time. As a result, each stage of the communication and processing functions can be designed in a well-organized manner, and even if control information with various contents is used, an ATC system that uniformly manages a series of corresponding train controls is configured. be able to.
[0005]
The track circuit described above has various lengths ranging from a relatively long long track laid on a high-speed travel line between stations to a relatively short short track frequently used in a station premises. Examples of this short track include a branch line for transferring a train from one line to another, a lead-in line and a retreat line for entering the train on a platform or branch line, and the like. Train control is performed on these short tracks as a single closed section.
[0006]
In other words, whether or not it is a short or small track, continuous running control is required in all closed sections depending on the actual running state of the train. As a result, consistent train control with no leakage can be realized over the entire route, and fine-tuned follow-up control that always matches the operation schedule can be realized.
[0007]
[Problems to be solved by the invention]
However, the automatic train control device according to the conventional example has the following problems. In recent years, the speeding up of trains has been remarkable, and it has become necessary to speed up information transmission and increase the amount of transmission information, so control information has been transmitted digitally. However, when the amount of control information increases, the transmission time is prolonged and the time required for train control takes a long time. For this reason, it is necessary to prevent in advance that the train cannot receive the control information to the end while traveling on the short orbit described above.
[0008]
In this case, for example, it is conceivable to retransmit the same control information via a subsequent normal-length trajectory. However, on such a short track, it is important to perform train control that is continuous with the command items in the preceding track. For this reason, if the follow-up train control is performed on the following track, the continuity of this train control cannot be sufficiently guaranteed.
[0009]
In some cases, it may be necessary to transmit control information having a small amount of information. Even in such a case, it is desirable to reduce the burden on the entire train control by causing the on-board device to perform uniform processing in the same way as when the amount of information is large. For this purpose, it is convenient to set the length of the transmission frame of the control information to a fixed length. For this reason, there is a limit to shortening the transmission time by shortening the transmission frame.
[0010]
In such a short orbit reception, the above-described restrictions due to the time required for train control, difficulty in retransmitting control information, restriction on shortening of transmission frames, and the like have become problems that cannot be ignored in combination with high-speed trains. Therefore, the collective solution of these problems is an important technical issue in train control.
[0011]
Therefore, an object of the present invention is to ensure that when train control is performed on a route in which long and short tracks are mixed, particularly when the train enters a short track from a long track in digital control of information transmission. An object of the present invention is to provide an automatic train control device that guarantees continuity of train control.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, an automatic train control device according to the present invention is installed corresponding to a series of a plurality of blocked sections, organizes track classification and train control command items in each blocked section into control information, Information transmission means for transmitting each control information as communication information according to track classification to traveling trains that sequentially pass through the blockage section, and message reception that receives the communication information via the blockage section in the existing line and obtains control information And an information pre-decision determining unit comprising a processing selection unit that predetermines the trajectory classification of the blockage section adjacent to the blockage section with reference to the header section of the control information, and an on-vehicle storage unit that holds the control information. with reference in accordance with this information preemption determination unit to the reception state of the message receiver includes a decoding unit for decoding the instruction items of the block sections from the control information, and mounting of in each of the running train , Each of the communication information received via the respective block section, reproduces the command items in one block section, includes an information reproducing means for reproducing the trajectory classification of block sections adjacent thereto, and information preemption decision The unit determines whether the control information is related to the long or short trajectory on the trajectory classification of the closed section, and stores the control information related to the short trajectory in advance based on the trajectory classification, so that the decoding unit Even when a train enters a closed section of a short track adjacent to a closed section of a long track, train control can be performed while continuously decoding command items from the control information regardless of the length of the adjacent closed section wherein the structure and the.
[0013]
According to this automatic train control device, the command information in each block section and the track classification of the block section adjacent to it are included in the control information by the information transmission means. For this reason, the track classification of the adjacent block section is transmitted in advance together with the communication information for the block section. And, by configuring the practical information reproducing means suitable for the actual transmission environment that changes with the length of the trajectory, the control information of the blocked section is reproduced from the communication information, and the track classification of the subsequent blocked section is also performed. Is obtained. Therefore, for example, the control information can be determined in advance from the trajectory classification. The information pre-decision determining unit holds control information related to the short trajectory in advance based on the trajectory classification, so that the decoding unit enters the closed segment of the short track adjacent to the closed segment of the long track. Even in this case, it becomes possible to perform the train control while continuously decoding the command items from the control information regardless of the length of the adjacent closed section.
[0014]
In the automatic train control device according to claim 2 of the present invention, the information transmission means is installed beside a route composed of a plurality of blocked sections, and a table for specifying the track classification of each blocked section, while applying the resulting trajectory classification from the table, it has an information organization unit organizing control information in each block section, and a message transmission unit to be transmitted to a particular block section the control information as the communication information, the It is characterized by.
According to this, it is possible to realize a practical information transmission means configuration suitable for an actual route in which long and short tracks are mixedly mixed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a block diagram of a configuration example of an automatic train control device according to an embodiment.
This automatic train control device 10 includes a frame telegram transmission means 20 installed in a station or on the side of a route, for example, in a ground equipment room, and control information installed in trains TR, TR,. Each reproducing means 30 (one of them is shown in the figure) is constituted.
[0017]
Thereby, control information for train control can be transmitted to each train TR (one of them is shown in the figure) on a route composed of a series of blocked sections (a part of which is shown in the figure).
Further, communication information according to the present invention is constituted from this frame telegram, information transmission means according to the present invention from transmission means 20, and information reproduction means according to the present invention from reproduction means 30.
[0018]
As this train TR, for example, in the case of a railroad, there is a train consisting of one or a plurality of trains traveling on the route, but each track consisting of a blockage section while traveling along a certain route. Any mobile vehicle may be used as long as it receives control information via the circuits TS and TL. Hereinafter, an example of train control in one track circuit TS, TL of a train of a plurality of cars will be described. Reference numeral 21 indicates a transformer block for matching with the track circuits TS and TL, and 31 indicates a receiver for signal currents from the track circuits TS and TL.
[0019]
FIG. 2 is a block diagram of a configuration example of the frame message transmission means shown in FIG.
The transmission means 20 includes a protector block 23 for ensuring electrical safety with the outside of the equipment, a track transmission / reception block 24 for various information associated with each track circuit TS, TL, and the train TR described above. It has a speed control logic block 40 for logically constructing control information based on the control conditions, and an interface block 25 for centralized management of the entire route, interlocking with connection routes, and the like. The protector block 23 and the track transmission / reception block 24 constitute a message transmission unit according to the present invention.
[0020]
In addition, various support devices are attached according to the management conditions of this ATC system, such as the size of the route, the type of train TR, and the traveling speed. For example, the boundary receiver 26 that receives the position information from the train TR at the management boundary with another transmission means 20 and transmits it to the speed control logic block 40, the train TR is unavoidably necessary to temporarily exceed the stop position. For example, there are an intrusion detector 27 and a power supply block (not shown).
[0021]
The speed control logic block 40 includes an information transmission unit 41 that performs transmission of control information with the track transmission / reception block 24 and transmission of position information with the boundary receiver 26, a position detection device for the train TR and a speed command (not shown). It has an information organizing unit 42 for control information, position information, and management information that receives command information S41 from a device or the like.
[0022]
Further, an input / output for various management information between the speed control logic block 40 and a display table section 44 for display for the train TR, which is attached to the information organization section 42, and the interface block 25 described above. A unit 45 is also provided. The presenting table section 44 is provided with a classification table 44a for each track circuit TS, TL, and the classification table 44a constitutes a track classification table according to the present invention.
[0023]
For example, if the information organization unit 42, the display table unit 44, and a ground storage unit (not shown) for the control program are configured by a known microprocessor system including the interface block 25 as necessary, Good. For the display table unit 44, a logical expression for determining the display may be configured as a database. In addition, it is desirable to configure each unit in consideration of making the train control fail-safe, in particular, the information organization unit 42 and its ground storage unit are duplicated.
[0024]
In this classification table 44a, the physical form of each track circuit TS, TL, in particular whether it is composed of long or short tracks, is arranged in correspondence with each other.
For example, it may be registered for each route together with a logical expression or the like in the above-described database. In this case, the display table 44 can be configured more simply than separately arranged.
[0025]
FIG. 3 is a block diagram of a configuration example of the control information reproducing means shown in FIG.
The reproduction means 30 includes the power receiver 31 described above, a receiver 32 for each frame message, an ATC on-board device 50 for instructing a target speed and a braking amount for travel control, and a drive shaft of the train TR. It has the speed generator 33 which made it interlock | cooperate, and the ATC speed check apparatus 34 which performs driving | running | working control of the train TR based on this. The power receiver 31 and the receiver 32 constitute a message receiver according to the present invention. A dedicated communication processor may be used as the receiver 32.
[0026]
The ATC on-board device 50 includes a process selection unit 51 for immediate processing or determination processing of train control, an on-board storage unit 52 for determination processing and the like, and an information decoding unit 53 for each control information. It is what you have. For example, the process selection unit 51, the on-vehicle storage unit 52, and the information decoding unit 53 may be configured by a known microprocessor system. The on-board storage unit 52 is provided with a control information reuse flag 52a, and the reuse flag 52a and the process selection unit 51 constitute an information prefetch determining unit according to the present invention.
[0027]
Next, the operation of the embodiment of the present invention will be described.
FIG. 4 is a flowchart of an example of information transmission work of the transmission means shown in FIG.
In this electronic message transmission service, each of the following processes may be configured by predetermined firmware, and may be stored in advance in the above-described ground storage unit, for example.
[0028]
Further, in this information transmission work, by introducing predetermined new information into the information organization unit 42, for example, each process is started by an interrupt process in which a priority order is set in advance. As the trigger, for example, new command information such as S41 arrives from the speed command device described above, new management information is input through the input / output unit 45, or from the boundary receiver 26 as well. It may be used to receive new position information.
[0029]
When specific processing is started in this manner, first, control information organization processing ST11 is executed. In this knitting process ST11, while deciphering each introduced information, referring to the above-mentioned presenting table section 44, command items based on the operation schedule are determined from the current traveling position of each train TR. The Then, predetermined track circuits TS and TL are specified according to the current position of each train TR, and an identification number or the like of the train TR is assigned to the command items and organized into control information.
[0030]
Subsequently, a search process ST12 for the corresponding trajectory classification is executed. In this search process ST12, the sequence number of the closed section corresponding to the track circuit TS, TL is specified, and the corresponding track classification is read using this as a search key while referring to the track classification classification table 44a. Then, the control information is transferred to the next process using the read trajectory classification as an argument, for example.
[0031]
Subsequently, a frame telegram transmission process ST13 is executed based on the organized control information and the like. In this transmission process ST13, each searched trajectory classification is converted into a frame message in a certain format while being merged with control information. Then, after specifying the track circuits TS and TL specified earlier and transmitting the respective frame telegrams, the normal end of the transmission processing is confirmed, and the next information transmission work is started.
[0032]
FIG. 5 is a format diagram showing an example of a frame message for the information transmission work shown in FIG.
As a format of this frame message, for example, a start flag F1 and an end flag F2 are added before and after the message, a header portion HD is provided following the start flag F1, and an attribute area Z indicating the information type of the message in order. Then, each region such as the section number Tn of the identified track circuits TS and TL and the identification number ID of the train TR to be controlled is formed and a corresponding code is set.
[0033]
Further, the message body is stored after the header portion HD, and a message regarding desired control items, numerical values, allowable values, and the like is set. A predetermined error detection code is placed immediately before the end flag F2, and for example, the data quality is guaranteed with a CRC code, for example.
As the information type, for example, a trajectory classification indicating the forms of the trajectory circuits TS, TL and the adjacent trajectory circuits TS, TL, for example, a flag indicating whether or not to move from a long trajectory to a short trajectory, a message, Register the sequence number, version number, etc.
[0034]
According to this information transmission service, when the train TR reaches a short track such as the aforementioned branch line, the track form of the short track can be determined in advance in the forward track preceding this. In addition to this, for example, it is determined whether or not a predetermined trajectory form is suitable for telegram transmission of planned control information, and as a result, only when the trajectory form is inappropriate, the trajectory form is controlled as a specific trajectory classification. It can also be transmitted with information. Further, the trajectory classification may be transmitted two or more before the short trajectory, or a plurality of types of short trajectories may be distinguished and transmitted.
[0035]
FIG. 6 is a flowchart of an example of the information reproduction work of the reproduction means shown in FIG.
In this information reproduction work, each of the following processes is configured by a predetermined firmware, for example, may be stored in advance in the above-described on-vehicle storage unit 52. Alternatively, each unit may be configured by a logic circuit. Good.
[0036]
Further, in this information reproduction work, by introducing a new frame telegram to the receiver 32 of the reproducing means 30, for example, each process is started by an interrupt process in which priorities are set in advance. As the trigger, for example, the arrival of the frame telegram carrier from the track circuit via the above-described power receiver may be used.
[0037]
When specific processing is started in this way, first, frame message reception processing ST21 is executed. In this reception process ST21, the frame message from the transmission means 20 transmitted through the track circuit is received by the receiver 32 described above.
[0038]
Subsequently, the trajectory classification determination process ST22 is executed. In this determination process ST22, the forms of the following track circuits TS and TL are determined according to the information type set in the attribute area Z while referring to the header part HD of the received frame message. As a result, if the trajectory classification indicates a long trajectory, the control information decoding process ST24 is immediately executed. If the trajectory classification indicates a transition to a short orbit, control is performed in advance for the next information reproduction operation. The information determination process ST23 is executed.
[0039]
In this control information determination process ST23, control information for the subsequent track circuits TS, TL is determined in advance based on the current control information regarding the track circuits TS, TL in the existing line. For example, a reuse flag 52a that holds the current control information until the next information reproduction job can be simply set, and thereby, the same train control as the last long track preceding can be continued even on a short track. . In addition, if the control information on the long track is stored in the on-vehicle storage unit 52, it can be repeatedly used on one or more short tracks following the control information.
[0040]
Subsequently, the control information decoding process ST24 is executed based on the control information. In this control information decoding process ST24, the above-mentioned reuse flag 52a is inspected, and if it is not standing and the current track circuit TS, TL is a long track, the control information is restored from the received frame message, Decipher the various directives included in. Further, if the reuse flag 52a is set and the track circuits TS and TL are short and short tracks, the train control on the last long track preceding is repeated on this short track.
[0041]
Alternatively, the control information stored in the determination process ST23 described above may be read from, for example, the on-board storage unit 52, and the command items may be decoded again. As a result, in any of the track circuits TS and TL, almost the same decoding procedure is executed based on the obtained decoding result and predetermined train control is performed, so that the decoding process ST24 can be made uniform and simple. .
[0042]
According to such a message reproduction task of the reproducing means 30, the trajectory classification of the following trajectory is acquired from the information transmitting means 20 in advance, and the train control when it is a short trajectory is determined in advance. Train control with track and continuity can be realized. For example, when there is a possibility that the control information cannot be received from the transmission means 20 in the ground equipment room because the specific track circuit TS, TL is a short track, the following short track is related based on the track classification. Train control can be determined in advance, so that train control can be realized without being traced over the entire route.
[0043]
【The invention's effect】
As described above, according to the present invention, the trajectory classification of the subsequent closed section is transmitted from the information transmitting means to the information reproducing means in advance, so that train control having continuity with the preceding trajectory can be realized. For this reason, when train control is performed on a route in which long and short tracks are mixed, an automatic train control device capable of reliably guaranteeing continuity of train control even when a train enters a short track from a long track is provided. be able to. For example, in a short track such as a branch track or a lead-in line that needs to shorten the time required for train control on the vehicle, it is assumed that the frame telegram cannot be received completely. Can be guaranteed.
In addition, according to the automatic train control device according to claim 2, a configuration of a practical information transmission means suitable for an actual route in which long and short tracks are mixed can be realized, and the automatic train control device according to claim 3 Therefore, it is possible to realize a practical reproduction means configuration suitable for an actual transmission environment that varies with the length of the orbit.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of an automatic train control device according to an embodiment of the present invention. FIG. 2 is a block diagram of a configuration example of a frame telegram transmission unit shown in FIG. FIG. 4 is a block diagram of an example of information transmission work of the transmission means shown in FIG. 2. FIG. 5 is a format diagram showing an example of a frame message of the information transmission work shown in FIG. FIG. 6 is a flowchart of an example of information reproduction work of the reproduction means shown in FIG.
DESCRIPTION OF SYMBOLS 10 ... Automatic train control device, 20 ... Transmission means, 21 ... Matching transformer block, 23 ... Guard block, 24 ... Track transmission / reception block, 25 ... Interface block, 26 ... Boundary receiver, 27 ... Intrusion detector, 30 Reproduction means 31 ... Power receiver 32 ... Receiver 33 ... Speed generator 34 ... ATC speed check device 40 ... Speed control logic block 41 ... Information transmission unit 42 ... Information organization unit 44 ... Present Table unit 44a ... Classification table 45 ... Input / output unit 50 ... ATC on-board device 51 ... Processing selection unit 52 ... On-board storage unit 52a ... Reuse flag 53 ... Information decoding unit S41 ... Command information , TS, TL ... track circuit, TR ... train.

Claims (2)

Installed corresponding to a series of blocked sections, organizes track classification and train control command items in each blocked section into control information, and tracks each control information to a traveling train that passes through each blocked section in turn. Information transmission means for transmitting as communication information according to the classification;
A telegram receiving unit that receives communication information via a blocked section in the current line and obtains control information, and a process for predetermining the trajectory classification of the blocked section adjacent to the blocked section with reference to the header section of the control information An information prefetch determining unit including a selection unit and an on-vehicle storage unit that holds control information, and referring to the information prefetch determining unit according to the reception state of the message receiving unit, the command items of the blockage section are controlled information And a decoding unit that decodes from, and is installed in each traveling train, receives each communication information through each blocked section, reproduces the command items in one blocked section, and is adjacent to this Information reproducing means for reproducing the trajectory classification of the occluded section ;
With
The information pre-determining determination unit determines whether the control information is related to a long or short trajectory on the trajectory classification of the closed section, and holds control information related to the short trajectory in advance based on the trajectory classification. The deciphering unit continuously decodes the command items from the control information regardless of the length of the adjacent closed section even when the train enters the closed section of the short track adjacent to the closed section of the long track. An automatic train control device characterized in that it can be controlled. The information transmission means includes
It is associated with a route composed of a plurality of blocked sections, a table for identifying the track classification of each blocked section,
While organizing the trajectory classification obtained from this table, an information organization unit that organizes control information in each closed section,
A message transmission unit that transmits this control information as communication information toward a specific block section ,
The automatic train control device according to claim 1, further comprising:

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