JP2001199338A - Automatic train control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic train control device capable of surely guaranteeing the continuity of train control and capable of improving an effective speed of travel control in a car-mounted device when controlling a train on a roadway where long and short tracks mixedly exist. SOLUTION: A frame telegraphic message transmission means 20 arranged in a station on a roadway and an aboveground apparatus room is provided with a speed control logic block 40 of a train TR, and this block is provided with an information forming part 42 for control information for receiving command information S41 and the information storage area 43a. Respective control information reproducing means 30 mounted in the train TR are provided with an ATC car-mounted device 50 for the travel control, and this device is provided with a telegraphic message sorting part 51 for an independent telegraphic message and a composite telegraphic message, a telegraphic message storage area 52a for the composite telegraphic message and an information decoding part 53 on the basis of these telegraphic message groups.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for driving a plurality of trains at high speed on a railway line consisting of a series of closed sections.
The present invention relates to an automatic train control device for controlling the running of each train while transmitting control information such as speed limit and braking amount in various lengths according to each operation plan and running state.

[0002]

2. Description of the Related Art Conventionally, an automatic train control (hereinafter, referred to as ATC) system for automatically transmitting security information such as an appropriate speed limit and a traveling position to a train traveling on a railway line has been known. Have been. In this ATC system, a plurality of closed sections are sequentially set on a route, and ground equipment is installed in a station or an equipment room beside a track, and connected to a track circuit of each closed section via a transmission line. is there.

[0003] According to this ATC system, a series of security information is sequentially sent out to a 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 each closed section, and 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 transmit, receive, and further control the train, and the on-board device processes commands included in the acceleration / deceleration and other information within the required time. In other words, within the time required to pass one track circuit, information necessary for each track circuit is processed, and stable traveling control is always realized.

[0004] The time required for such train control is regulated by the transmission time of the control time having the longest information length. For this reason, the on-board device is configured to determine the content of the command from the ATC device within the required time. This makes it possible to design each stage of communication and processing functions in a coherent manner, and even when using control information of various contents,
An ATC system that integrally manages a series of train controls corresponding to each can be configured.

[0005] The above-mentioned track circuits have various lengths from relatively long long tracks laid on high-speed running lines between stations to relatively short short tracks used frequently in station premises and the like. There is. Examples of the short track include a branch line for changing a train from one line to another line, a drop-in line and a retreat line for allowing a train to enter a platform or a branch line, and the like. Train control is also performed on these short tracks as independent closed sections.

[0006] In other words, whether running on a short track or not, continuous running control is required in all closed sections according to the actual running state of the train. As a result, consistent train control without leakage over the entire route can be realized, and meticulous follow-up control consistent with the operation schedule can be realized at all times.

[0007]

However, the automatic train control device according to the above-mentioned conventional example has the following problems. In recent years, high-speed trains have remarkably required high-speed information transmission and an increase in the amount of transmission information. Therefore, control information has been digitally transmitted. However, when the amount of control information is large, the transmission time is prolonged, and the time required for train control is long. For this reason, it is necessary to prevent in advance that the train cannot completely receive the control information while traveling on the short orbit.

[0008] In this case, for example, it is conceivable to retransmit the same control information through a subsequent normal-length trajectory.
However, on such a short track, it is important to control the train continuously with the command items on the preceding track. For this reason, if the following train control is performed on the following track, the continuity of the train control cannot be sufficiently guaranteed.

In some cases, it is only necessary to transmit control information with a small amount of information. Even in such a case, it is desired to reduce the burden on the entire train control by causing the on-board device to perform uniform processing as in the case of a large amount of information. For this purpose, it is more convenient to set the length of the control information transmission frame to a fixed length. For this reason, there is a limit to shortening the transmission frame to shorten the transmission time.

In such a short orbit reception, the above-mentioned restrictions due to the time required for train control, difficulties in retransmitting control information, and limitations on shortening of transmission frames have become problems that cannot be ignored in conjunction with the speeding up of trains. Therefore, the collective solution of these problems has been an important technical problem in train control.

Accordingly, an object of the present invention is to provide a method for controlling a train on a line having a mixture of long and short tracks, particularly when a train enters a short or short track from a long track in digitization of information transmission. Another object of the present invention is to provide an automatic train control device that ensures continuity of train control.

[0012]

In order to solve the above-mentioned problems, an automatic train control device according to the present invention is installed so as to correspond to a series of a plurality of closed sections. One or a plurality of transmission units are organized into control information, and the traveling train passing through each closed section in order, information transmission means for transmitting each control information for each transmission unit, and mounted in each traveling train,
Reproducing means for receiving one or a plurality of transmission units via each closed section and reproducing at least one control information from these transmission units, and based on the reproduced control information, a traveling train in the closed section The running control is performed.

According to this automatic train control device, the information transmission means divides a telegram with a large amount of information into a plurality of transmission units and sends out the telegram to each closed section. For this reason, each transmission unit has an information length suitable for a short orbit, and can be sufficiently received by the traveling train reproducing means. Then, the original control information can be reproduced from each transmission unit or from a plurality of transmission units. For the control information reproduced from one transmission unit, for example, desired traveling control is immediately performed.

According to a second aspect of the present invention, in the automatic train control device, the information transmission means is installed beside a line composed of a plurality of closed sections, and the information for organizing command items for the traveling train into control information. A knitting unit, a predetermined storage area for storing the knitted control information, and a message transmitting unit for reading out the control information from the information storage unit for each transmission unit and transmitting each of them toward a specific block section. It is characterized by having. According to this, a practical one suitable for train control can be realized, and each piece of control information is transmitted in one or a plurality of transmission units in a predetermined sequence toward a predetermined closed section.

According to a third aspect of the present invention, in the automatic train control apparatus, the reproducing means includes a message receiving unit for receiving each transmission unit via a closed section on the line, and a header unit for each received transmission unit. A message sorting unit that sorts a single message consisting of one transmission unit and a compound message consisting of a plurality of transmission units, and a message storage unit that stores a transmission unit group of the sorted compound message in a predetermined area. And an information decryption unit that decodes the transmission unit group of the stored single message in the original order while reading out the transmission unit group of the composite message in a desired order, but immediately decodes the transmission unit of the sorted single message. According to this feature, it is possible to realize a configuration of a practical reproducing means suitable for an actual route in which a single message and a complex message are complicatedly complicated.

[0016]

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 one embodiment. The automatic train control device 10 includes a frame message transmission means 20 installed in a station on a route or a side of the route, for example, in a ground equipment room, and control information mounted in trains TR, TR,. Each of the reproducing means 30 (only one of them is shown in the figure).

As a result, each train T on a line consisting of a series of closed sections (a part of which is shown in this drawing)
Control information for train control can be transmitted to R (one of them is shown in this figure). Also, the communication information according to the present invention is constituted from the frame message, the information transmitting means from the transmitting means 20 and the information reproducing means according to the present invention from the reproducing means 30, respectively.

As this train TR, for example, in the case of a railway, there is a train composed of one or more trains running on the line, but other than that, while traveling along a fixed line, the train TR Any mobile vehicle that receives control information via the respective track circuits TS and TL may be used.
Hereinafter, an example of train control in one track circuit TS, TL of a train having a plurality of double trains will be described. Reference numeral 21
Indicates a transformer block for matching with the track circuit, and 31 indicates a receiver for receiving a signal current from each track circuit TS, TL.

FIG. 2 is a block diagram showing an example of a configuration of the transmission means of the frame message shown in FIG. This transmission means 20
A track transmission / reception block 24 for various information corresponding to each track circuit TS, TL; a speed control logic block 40 for logically configuring the control information of the train TR based on the control conditions; And an interface block 25 for centralized management of data transmission and interlocking with connection routes. The orbit transmission / reception block 24 constitutes a message transmission unit according to the present invention.

The speed control logic block 40 includes an information transmission unit 4 for transmitting control information with the orbit transmission / reception block 24.
1 and an information organization unit 42 for control information, position information, and management information, which receives command information S41 from a position detection device, a speed command device, or the like of the train TR (not shown).

Further, in this speed control logic block 40,
A ground storage unit 43 attached to the information organization unit 42;
And an input / output unit 45 for various kinds of management information with the interface block 25 described above. The ground storage unit 43 is provided with an information storage area 43a for control information, and the information storage area 43a constitutes a storage area according to the present invention.

When transmitting to the reproduction means 30 of the train TR, the maximum length of a message that can be transmitted at one time is set as a transmission unit, and the information length Ut is registered in a predetermined register 42a of the message composition unit 42 in advance. Keep it. This information length is determined, for example, as follows. Usually, a necessary transmission band is guaranteed while avoiding the influence of the harmonics of the power supply frequency by using a several hundred Hz band as the carrier wave of the frame message. At this time, a transmission speed of about several tens of bps is empirically appropriate to maintain a predetermined transmission quality.

Therefore, the traveling speed of the train TR is 300 km
On routes exceeding / S, for example, only a few tens of bits of information can be transmitted while passing a short track of less than 100 m.
It cannot be transmitted to R. However, information that needs to be processed immediately even in this short orbit requires at least several tens of bits, and in particular, it should be considered that the information cannot be transmitted in a short orbit of about several tens of meters in a station yard.

In this case, it is desirable that the above-mentioned information length Ut can be reduced to about several tens of bits. For example, if the information length Ut is set to 20 bits, and information having a length of about 100 bits, which does not normally require immediate processing, is transmitted in five divisions, the processing of each unit is not so burdensome as long as this is the extent. No.

FIG. 3 is a block diagram of a configuration example of the control information reproducing means shown in FIG. The reproducing means 30 includes a receiver 31 described above and a receiver 32 for each frame message.
And an AT for instructing a target speed and a braking amount for traveling control.
C on-board device 50. The power receiver 31 and the receiver 32 constitute a message receiver according to the present invention.

The ATC on-board device 50 has a message sorting unit 51 for a single message and a compound message, a vehicle storage unit 52 for a compound message and the like, and an information decoding unit 53 based on these message groups. Things. The on-board storage unit 52 is provided with a message storage area 52a according to the present invention.

Next, the operation of the embodiment of the present invention will be described. FIG. 4 is a flowchart of an example of the information transmission operation of the transmission means shown in FIG. In this information transmission service, the following processes may be configured by predetermined firmware, and may be stored in the above-described ground storage unit 43 in advance, for example.

In this information transmission service, each process is started by introducing predetermined new information into the information organizing unit 42, for example, by an interrupt process in which a priority is set in advance. As the trigger, for example, the arrival of new command information S41 from the above-described speed command device or the like, or the input of new management information via the input / output unit 45 may be used.

When the specific processing is started as described above,
First, the control information knitting process ST11 is executed. In the knitting process ST11, command items based on the operation schedule of each train TR are determined based on the current running position of each train TR while referring to the above-described presenting table unit 44 while decoding the respective introduced information. You. Then, predetermined track circuits TS and TL are specified in accordance with the current position of each train TR, and an identification number or the like of the train TR is added to the command items and organized into control information.

Subsequently, storage processing S of the organized control information
Execute T12. In this storage processing ST12, these control information are stored in the information storage area 43a of the above-mentioned ground storage unit 43, and can be sequentially read out in a certain order at any time. As this storage format, for example, the order may be managed by a series of sequence numbers and the like.

Subsequently, a frame message transmission process ST13 is executed based on the stored control information. In the transmission process ST13, while searching the information storage unit 43a, reading out a partial information group of a predetermined data length with respect to desired control information in a certain order, each of them is converted into a frame message of a certain format. Then, the previously specified track circuits TS and TL are designated, and each frame message is repeatedly transmitted to the designated track circuits. After confirming the normal end, the process proceeds to the next transmission operation. In addition, the frame information may be sequentially transmitted while organizing the control information for each of the partial information groups described above, whereby the control information storage processing ST12 can be omitted.

FIG. 5 is a format diagram showing an example of a frame message of the information transmission business shown in FIG. The format of the frame message is, for example, a start flag F before and after the message.
1 and an end flag F2, a header portion HD is provided following the start flag F1, an attribute area Z indicating the information type of the message, a section number T of the specified track circuits TS and TL in order.
n, each area such as the identification number ID of the train TR to be controlled is formed and the corresponding code is set.

Further, a message body is stored following the header section HD, and a message concerning 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 transmission quality is simply guaranteed by a CRC code or the like. As the information type, for example, a message classification indicating whether the frame message is a single message or a compound message,
For example, a simple flag indicating whether the message is a single message, a message sequence number, its version number, and the like are registered in a simple manner.

Therefore, the partial information group is read out from the message storage area 43a of the ground storage unit 43 based on the respective sequence numbers, and the register 4 of the message organization unit 42 is read.
Each track circuit T is based on the information length Ut registered in 2a.
The transmission unit of the message for S and TL can be limited to this length. Therefore, in this transmission unit, one track circuit T
Each frame message can always reach the reproduction means 30 of the train TR in a fixed transmission time while configuring the minimum amount of control information required by S and TL.

In other words, such transmission processing ST1
According to No. 3, the transmission unit corresponding to the shortest track circuit TS, TL is determined, and each control information is divided in accordance with this.
A series of short frame messages can be constructed for each. For this reason, the orbital circuit TS, consisting of the short orbits described above,
Train TR passing near the speed limit for TL
Within one passing time, one frame message can be transmitted sufficiently.

In other words, continuous train control can be performed for all closed sections corresponding to the track circuits TS and TL, and each section of the transmission means 20 has a closed track circuit TS composed of short track circuits in particular. Each process of the transmission operation can be performed without distinguishing the section from other closed sections composed of the long track circuit TL.

In addition to the above, a plurality of information lengths Ut, Ut,. It is good also as a structure used. In this case, on a high-speed running line other than the station yard, each frame message is transmitted with the same amount of information as before, the transmission speed for one control information is increased, and an effective ATC system train control is performed. The response can be further improved.

FIG. 6 is a flow chart of an example of the information reproducing operation of the reproducing means shown in FIG. This information reproduction business,
The following processes may be configured by predetermined firmware, and may be stored in, for example, the above-described vehicle storage unit 52 in advance. Alternatively, each unit may be configured by a logic circuit.

In this information reproducing operation, a new frame message is introduced into the receiver 32 of the reproducing means 30 to start each processing by, for example, interrupt processing in which priorities are set in advance.

When the specific processing is started in this way, first, a frame message reception processing ST21 is executed. In the reception process ST21, the frame message transmitted from the transmission means 20 via the track circuit is transmitted to the receiver 32 described above.
Receive by.

Subsequently, the sorting process ST of the frame message is performed.
Step 22 is executed. In the sorting process ST22, each frame message is sorted into a single message and a composite message according to the information type set in the attribute area Z while referring to the header portion HD of the received frame message.

As a result, the compound message storage process ST23 is executed for the obtained compound message group, but the control information decoding process ST24 is immediately executed for the single message or the last frame of the compound message group. . In the storage process ST23, each compound message is stored together with a series of sequence numbers in the corresponding message storage area 52a of the on-board storage unit 52, and can be read out in a certain order at any time. .

In the control information decoding process ST24,
If it is a single message, the original control information is restored as it is, and various command items included in each message are decoded. Also, in the case of a compound message, the original control information of the corresponding data length is restored while reading from the message storage area 52a in order according to the respective sequence numbers.
In the same way, decode the instructions.

According to this information reproducing operation, a single telegram composed of one unit frame is selected, and the control information is immediately decoded for those telegrams. At this time, since a considerable number of command items out of the control information used for normal train control can be configured in the form of a single message, the ATC on-board device 50 of the train TR includes acceleration / deceleration in train control. Effective response to commands and the like can be improved.

[0045]

As described above, according to the present invention,
A single message consisting of one transmission unit is immediately decoded, and a composite message group consisting of a plurality of transmission units is also decoded at a later time. Even on a route where a track and a long track coexist, it is possible to improve the throughput of traveling control in the on-board device. Further, there is no difference in the transmission / reception processing between the single message and the composite message. According to the automatic train control device of the second aspect,
One control information is stored as a plurality of transmission units, each of which can be transmitted in a fixed sequence. According to the automatic train control device of claim 3, one or a plurality of transmission units are received and each of the control information is transmitted. Is provided for train control at a decoding speed corresponding to the amount of information.

[Brief description of the drawings]

FIG. 1 is a block diagram of 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 transmission unit of a frame message shown in FIG. 1;

FIG. 3 is a block diagram of a configuration example of a control information reproducing unit shown in FIG. 1;

FIG. 4 is a flowchart of an information transmission operation 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 business shown in FIG. 4;

FIG. 6 is a flowchart of an example of an information reproducing operation of the reproducing unit shown in FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Automatic train control apparatus, 20 ... Transmission means, 21 ... Transformer block for matching, 24 ... Track transmission / reception block, 25 ...
Interface block, 30 playback means, 31 power receiver, 32 receiver, 40 speed control logic block, 4
DESCRIPTION OF SYMBOLS 1 ... Information transmission part, 42 ... Information organization part, 42a ... Register, 43 ... Ground storage part, 43a ... Information storage area, 44 ...
Present table part, 45 input / output part, 50 ATC on-board device, 51 processing selection part, 52 vehicle storage part, 52a reuse flag, 53 information decoding part, S41 command information, T
S, TL: track circuit, TR: train.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Maruyama 2-29, Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture F-term (reference) 5H161 AA01 BB03 CC04 CC11 CC13 DD02 EE07

Claims (3)

[Claims] 1. A train control system is installed in correspondence with a series of a plurality of closed sections, organizes train control command items in each closed section into control information comprising one or a plurality of transmission units, and sequentially passes through each closed section. Information transmission means for transmitting each control information to each traveling train, and one or a plurality of transmission units mounted in each traveling train via each closed section, An automatic train control device, comprising: a reproducing unit that reproduces at least one control information from a unit, and configured to perform traveling control of a traveling train in the closed section based on the reproduced control information. 2. The information transmission means is installed beside a line composed of a plurality of closed sections, and stores an information organization unit for organizing command items for a traveling train into control information, and stores the organized control information. 2. The storage device according to claim 1, further comprising: a predetermined storage area to be stored, and a message transmission unit that reads control information from the information storage unit for each transmission unit and transmits each of the control information toward a specific block section. Automatic train control device. 3. The reproduction means includes: a message receiving unit that receives each transmission unit via a closed section in a line; and a header unit of each received transmission unit, each of which is a single transmission unit. A message sorting unit that sorts a message into a composite message composed of a plurality of transmission units, a message storage area that stores a transmission unit group of the sorted composite message in a predetermined area, and a transmission unit group of the stored composite message 2. An information decoding unit which decodes command items after grouping in the original control information while reading in a desired order, but immediately decodes a transmission unit of the separated single message.
Or the automatic train control device according to claim 2.