JP4970493B2 - Train control device and ground device - Google Patents

Description

The present invention relates to a train control device and a ground device .

  In recent years, in trains, development of train control systems using wireless communication is progressing. In such a train control system, the train control is performed by wireless communication between the vehicle upper side and the ground side without using a track circuit, and a method of performing this wireless communication by a request from the vehicle upper side and a request from the ground side There is a method to perform by. In the on-vehicle request method, it is necessary to provide a mechanism for reliably switching the ground device as a communication partner on the upper side of the vehicle. On the other hand, in the ground request method, such a switching mechanism on the vehicle upper side is unnecessary, and as disclosed in Patent Document 1, for example, wireless communication with the vehicle upper side is controlled on the ground side. In other words, each ground device installed in each control section (control section) that divides the track is configured to perform train control by performing wireless communication with the on-board device of the train in the corresponding control section. When passing the boundary, it was necessary to transmit and receive information between the ground devices.

  Specifically, when the train is going to advance from the control section, the “advance information” is transmitted from the ground device in the control section on the advance side to the ground device in the adjacent control section on the approach side, and the ground device on the approach side Then, by receiving the “advance information”, the train that is about to enter the own control section is grasped, and wireless communication with the train is started. When the approach side ground device establishes wireless communication and determines that the train has entered the self-control section, it transmits “entry information” to the advancing side ground device and receives this “entry information”. The ground device on the advancing side ends wireless communication with the train.

JP 2008-80981 A

  Such a train control system that requires transmission and reception of information between ground devices has problems such as processing delay and transmission delay in asynchronous processing. In addition, when information transmission between adjacent ground devices fails due to a communication error or a ground device failure, there is a problem that proper train control cannot be performed and system reliability is lowered. Specifically, when the train passes the boundary of the control section, the “advance information” is not received by the entry side ground device unless “advance information” is transmitted and received between the advance side device and the entry side ground device. Therefore, the train cannot be controlled because the wireless communication with the train trying to enter the own control section cannot be started. In addition, in the ground device on the advancing side, “entrance information” from the ground device on the approaching side is not received, and thus the train location information cannot be deleted. Furthermore, the train cannot perform wireless communication with the ground device, and is stopped, for example, for safety. This invention is made | formed in view of such a situation, and aims at the improvement of the reliability in the train control system by radio | wireless.

The first invention for solving the above-described problems is
A control section for controlling the approach and advance of the train to prevent the collision of the train is defined, and a ground apparatus for performing train control by performing wireless communication with the on-board apparatus of the train located in the control section,
An approach train detection device that is installed at a position a predetermined distance away from the entry end of the self-control section and detects a train entering the self-control section;
An advancing train detection device that is installed at a predetermined distance from the advancing end of the self-control section and detects a train that has advanced from the self-control section;
With
When the ground device detects a train by the approaching train detection device, it starts a trial of wireless communication toward the detected train and performs control for establishing wireless communication with the approaching train. It is a train control device that executes a start control process and a communication end control process that performs control to end wireless communication with the detected train when train detection by the advancing train detection device is performed.

  According to the first aspect of the invention, the train control device provided on the ground side independently detects a train located in the own control section and performs train control by performing wireless communication with the on-board device of the train. be able to. That is, while the approaching train detection device detects a train that is about to enter the self-control section, and the advancing train detection device detects a train that has advanced from the self-control section, the ground device is a train located in the self-control section. Can be detected. And, while establishing the wireless communication by starting the trial of the wireless communication with the train that is going to enter the self-control section, by terminating the wireless communication with the train that has advanced from the self-control section, in the self-control section Train control of the located train is realized.

As a second invention, the train control device of the first invention,
The advancing train detection device is installed at a position separated by at least one train length from the advancing end of the self-control section,
The ground device is
A position acquisition unit that acquires the position of the train by performing wireless communication with the on-board device of the train located in the self-control section;
Based on the position acquired by the position acquisition unit, an advance estimation unit that estimates whether the train has advanced from the own control section,
Based on the estimation result by the advancing estimation unit and the detection result by the advancing train detection device, the advancing permission / inhibition for transmitting a signal instructing whether or not to advance from the own control section to other trains located in the own control section A signal transmitter;
You may comprise the train control apparatus provided with.

  According to the second invention, the advancing train detection device is installed at a position separated by at least one train length from the advancing end of the control section. Will be detected. That is, the time when the train is detected by the advancing train detection device is when the train has completely advanced from the control section. And an estimation result as to whether or not the train has advanced from the self-control section based on the position of the train acquired by performing wireless communication with the on-board device of the train located in the self-control section, and the advance train detection device On the basis of the detection result of, a signal instructing whether or not to advance from the own control section is transmitted to other trains located in the own control section. This allows, for example, other trains located in the self-control section to advance from the self-control section until a train estimated to have advanced from the self-control section is detected by the advance train detection device. By not doing so, it is possible to control the train interval so that the train that advances from the own control section does not collide with the previous train.

The third invention is
A ground device corresponding to each of the control sections defined along the line for controlling the approach and advance of the train to prevent the collision of the train,
For each of the control sections, the train is installed at a predetermined distance from the entry end of the control section, detects a train entering the control section, and outputs a detection result to the ground device corresponding to the control section. An approach train detector,
For each control section, a train that is installed at a predetermined distance from the advancing end of the control section, detects a train that has advanced from the control section, and outputs a detection result to the ground device corresponding to the control section A detection device;
Comprising
Each of the ground devices is a train control system capable of independently detecting whether or not a train is located within the own control section using the detection result of the approach train detection device and the detection result of the advance train detection device. is there.

  According to the third aspect of the invention, each ground device corresponding to each control section detects a train that is about to enter the corresponding control section from the detection result by the approach train detection device, and from the detection result by the advancing train detection device. Trains that have advanced from the corresponding control section can be detected. Thereby, the train control system which can detect independently whether the ground device corresponding to each control section can detect whether the train is located in the self-control section is realizable.

The block diagram of a train control system. The block diagram of a train control apparatus. Explanatory drawing of the train detection in a train control apparatus. Explanatory drawing of the train detection in a train control apparatus. Explanatory drawing of the train detection in a train control apparatus. Explanatory drawing of the train detection in a train control apparatus. Explanatory drawing of the train detection in a train control apparatus. Explanatory drawing of the train control in a train control system. Explanatory drawing of the train control in a train control system. Explanatory drawing of the train control in a train control system. Explanatory drawing of the train control in a train control system. Explanatory drawing of the train control in a train control system. Explanatory drawing of the train control in a train control system. The functional block diagram of a train control apparatus. The flowchart of a train control process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the applicable embodiment of the present invention is not limited to this.

[System configuration]
FIG. 1 is a configuration diagram of a train control system 1 in the present embodiment. According to FIG. 1, the train control system 1 is configured to include a plurality of train control devices 3 that control each of the control sections CA that divide the track 5, and the train interval with respect to the train 7 on the track 5. Train control to be controlled.

  FIG. 2 is a diagram illustrating a configuration of one train control device 3. According to FIG. 2, the train control device 3 includes a ground device 10 installed along the track 5, an approach side ground element 20, and an advancing side ground element 30. Further, the ground device 10 and each of the approach side ground element 20 and the advance side ground element 30 are communicatively connected by a wired cable or the like.

  The ground device 10 detects a train entering the self-control section CA and a train entering the self-control section CA based on detection signals from the approach-side ground element 20 and the advance-side ground element 30. And the predetermined | prescribed radio | wireless communication is performed with the on-board apparatus 8 mounted in the train 7 located in the detected self-control area CA, and the train control with respect to this train 7 is performed. However, the wireless communication range of the ground device 10 includes at least the entire self-control section CA, and further includes a range from the entry side to the entry side ground element 20 and from the advance side to the entry side ground element 30. Is desirable. That is, the ground device 10 can wirelessly communicate with not only the train 7 in the own control section but also the nearby train 7 outside the self control section. Further, the wireless communication between the ground device 10 and the on-board device 8 is realized by, for example, a polling method. In the polling method, a response signal to the ground device 10 is sent from the on-board device 8 in response to a call signal from the ground device 10.

  The entry side ground element 20 is installed at a position outside the entry side of the own control section CA and a predetermined distance L1 from the start point (entrance end) SP of the control section CA. This distance L1 is determined as a distance longer than the travel distance of the train corresponding to the time required for the ground device 10 and the on-board device 8 to establish wireless communication. And the approach side ground element 20 detects the train which passes the position, and outputs a detection signal to the ground apparatus 10. FIG.

  The advancing side ground element 30 is located outside the advancing side of the own control section CA and at a position separated by a predetermined distance L2 from the end point (advancing end) EP of the control section CA. This distance L2 is determined as a distance longer than the maximum train length of the train traveling on the track 5. Then, the advancing side ground element 30 detects a train passing through the position, and outputs a detection signal to the ground device 10.

  The on-board device 8 mounted on the train performs operation control of the own train by performing wireless communication with the ground device 10 that controls the control section CA where the own train is located. Specifically, braking control (brake control) is performed according to the speed check pattern received from the ground device 10. The on-board device 8 calculates the current travel position at a predetermined cycle (for example, every second). Specifically, for example, the number of rotations of the speed generator attached to the axle is counted, and the current travel position (travel distance) is calculated from the counted value, or the current position is obtained by having a GPS. To do. Further, when passing near the entrance side ground element 20 or the advance side ground element 30, the ground element that has passed is identified based on the received ground element ID by performing short-range wireless communication with the ground element. The traveling position of the own train can also be corrected based on the identified ground element position.

[principle]
(A) Train Detection Principle First, the detection principle of the train 7 entering the own control section CA in each train control device 3 will be described. 3-7 is a figure explaining the detection of the train 7 by the train control apparatus 3. FIG.

  First, as shown in FIG. 3, it is assumed that a train 7 located outside the control section CA of the train control device 3 and in front of the entry-side ground element 20 is traveling toward the control section CA. Next, as shown in FIG. 4, when this train 7 is detected by the approach side ground element 20, the ground device 10 starts a trial of wireless communication with the on-board device 8 of the train 7 and establishes wireless communication. To do. When the wireless communication with the train 7 is established, the ground device 10 acquires the current traveling position of the train 7 from the on-board device 8 of the train 7. Acquisition of the current position of the train 7 is performed at any time while communication with the train 7 is established. Subsequently, as shown in FIG. 5, when the train 7 enters the control section CA, the ground device 10 starts train control for the train 7. Here, the approach of the train 7 to the control section CA is determined based on the current position acquired from the train 7.

  Thereafter, as shown in FIG. 6, when the train 7 advances from the control section CA, the ground device 10 ends the train control performed for the train 7. Here, the advance of the train 7 from the control section CA is determined based on the current position acquired from the train 7 as in the case of approach. Then, as shown in FIG. 7, when the train 7 is detected by the advancing side ground element 30, the ground device 10 ends the communication with the train 7.

  Thus, in the train control device 3, the entry of the train 7 to the self-control section CA is detected by the apparatus alone, and the train control for the train 7 in the self-control section is performed. And while each train control apparatus 3 performs a train detection and train control independently, the train control as the train control system 1 whole is implement | achieved.

  8-13 is a figure explaining the train control in the train control system 1 whole. However, FIGS. 8 to 13 show a case where the train 7 sequentially passes through the adjacent three control sections CA1 to CA3, and the corresponding train control devices 3-1 to 3 are respectively provided to the control sections CA1 to CA3. -3 is provided.

  First, as shown in FIG. 8, it is assumed that the train 7 is located in the control section CA1 of the train control device 3-1. That is, the train 7 performs wireless communication with the ground device 10-1 and is controlled by the ground device 10-1. Next, as shown in FIG. 9, when the train 7 is detected by the approach side ground element 20-2, communication between the train 7 and the ground apparatus 10-2 is started. At this time, the train 7 continues radio communication with the ground device 10-1 and is controlled by the ground device 10-1.

  Subsequently, as shown in FIG. 10, when the train 7 advances into the control section CA1 and enters the control section CA2, the control by the ground device 10-1 for the train 7 is terminated and the control by the ground device 10-2 is started. Is done. That is, the train control for the train 7 moves from the train control device 3-1 to the train control device 3-2. And as shown in FIG. 11, if the train 7 is detected by the approach side ground element 20-3, communication with the train 7 and the ground apparatus 10-3 will be started. At this time, the train 7 continues to communicate with the ground device 10-2 and is controlled by the ground device 10-2.

  Then, as shown in FIG. 12, when the train 7 advances from the control section CA2 and enters the control section CA3, the train control of the ground device 10-2 for the train 7 is completed, and the train control by the ground device 10-3 is performed. Be started. That is, the train control for the train 7 moves from the train control device 3-2 to the train control device 3-3. At this time, the train 7 is wirelessly communicating with both the ground devices 10-2 and 3. And as shown in FIG. 13, if the train 7 is detected by the advancement side ground element 30-2, communication with the train 7 and the ground apparatus 2 will be complete | finished.

  Thus, in the train control system 1, the train control as the entire system is realized while each train control device 3 constituting the system independently performs the train detection and the train control in the own control section CA. That is, the traveling train 7 sequentially passes through each of the plurality of adjacent control sections CA, but when passing through the boundary of the control section CA, the train control for the train 7 is currently in the control section The train control device 3 corresponding to the CA is switched to the train control device 3 in the next control section CA. Moreover, communication between the train control devices 3 is not required for switching the control right.

[Function configuration]
FIG. 14 is a block diagram illustrating a functional configuration of the train control device 3. The train control device 3 includes a ground device 10, an approach side ground element 20, and an advancing side ground element 30.

  Functionally, the ground device 10 includes a processing unit 100, a wireless communication unit 200, a wired communication unit 300, and a storage unit 400.

  In the train control process, the processing unit 100 detects the train 7 located in the own control section CA. That is, when the train 7 is detected by the entry side ground element 20, it is determined that the train 7 is approaching the own control section CA, and a trial of wireless communication with the train 7 is started. When established, acquisition of the current position from the train 7 is started. And if it judges that this train 7 entered self-control section CA from the present position acquired, train control to this train 7 will be started. In train control, a speed check pattern is generated based on the current travel position, travel speed, and stop position of the train 7.

  Subsequently, when it is determined that the train 7 has advanced from the own control section CA, the train control is terminated. After that, when the train 7 is detected by the advancing side ground element 30, the communication with the train 7 is terminated because it is sufficiently far from the own control section CA.

  The wireless communication unit 200 is a wireless communication device that performs wireless communication using, for example, a spread spectrum system, and performs wireless communication with an external device (mainly, the on-board device 8 of the train 7) in the communication area. The wired communication unit 300 is a wired communication device that performs wired communication via a communication cable, for example, and performs wired communication with each of the entry side ground unit 20 and the advance side ground unit 30.

[Process flow]
FIG. 15 is a flowchart illustrating a train control process executed in the ground device 10. According to FIG. 15, the processing unit 100 first determines whether or not the train 7 is detected by the approach-side ground element 20, and if it is detected (step A <b> 1: YES) Wireless communication with the train is started (step A3). And if communication with this train 7 is established, this train will be added to on-line information (step A5).

  Further, it is determined whether or not the train 7 is detected by the advancing-side ground element 30, and if it is detected (step A7: YES), the wireless communication with the train 7 is terminated because it has moved away from the own control section (step A9). ). Then, the train is deleted from the on-line information (step A11).

  Next, the processing unit 100 performs the following processing in order from the train 7 ahead with respect to the train 7 stored in the standing line information. That is, the current position of the target train 7 is acquired (step A13), it is determined whether or not the target train is located in the own control section CA, and the standing line information is updated (step A15). If the target train 7 is located within the own control section (step A17: YES), the travel control for the target train 7 is performed (step A19). On the other hand, if the target train 7 is located outside the self-control section (step A17: NO), it is further determined whether the target train 7 has advanced from the self-control section CA. If the above process is performed, it will return to step A1 and will repeat the same process.

[Action / Effect]
Thus, in the train control system 1 of the present embodiment, the train control device 3 is provided in each of the control sections CA dividing the track 5. In each of the train control devices 3, a train that tries to enter the own control section CA is detected by the wire-connected approach side ground element 20, and a train that has advanced from the self-control section CA is detected by the wired connection ground element 30. To do. That is, each train control device 3 detects the train 7 located in the own control section CA by itself and establishes wireless communication with the train 7 to perform train control. Thereby, the communication between the ground devices 10 becomes unnecessary, and the reliability of the train control system 1 is improved.

  It should be noted that embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can of course be changed as appropriate without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Train control system 3 Train control apparatus 10 Ground apparatus 100 Processing part 200 Wireless communication part, 300 Wired communication part 20 Entrance side ground element (entrance side train detection apparatus)
30 Advancement side ground element (advancement side train detection device)
5 Track CA control section, SP start point (entrance end), EP end point (advance end)
7 trains, 8 on-board equipment

Claims (2)

A control section for controlling the approach and advance of the train to prevent the collision of the train is defined, and a ground apparatus for performing train control by performing wireless communication with the on-board apparatus of the train located in the control section,
An approach train detection device that is installed at a position a predetermined distance away from the entry end of the self-control section and detects a train entering the self-control section;
An advancing train detection device that is installed at a predetermined distance from the advancing end of the self-control section and detects a train that has advanced from the self-control section;
With
The ground device,
When train detection by the approach train detection device is made, a communication start control process for starting control of establishing wireless communication with the approaching train by starting trial of wireless communication toward the detected train ,
While the wireless communication is established, train position information reception processing for receiving information on the train position measured by the onboard device of the train from the train as needed,
Based on the information on the train position received by the train position information reception process, an entry determination process for determining whether the train has entered the own control section;
A train control start process for starting the train control for the train when it is determined that the vehicle has entered by the entry determination process;
Based on the information on the train position received by the train position information reception process, an advance determination process for determining whether the train has advanced from its own control section;
A train control end process for ending the train control for the train when it is determined that the vehicle has advanced by the advance determination process;
When the train detection by the advancing train detection device is made, a communication end control process for performing control to end the wireless communication with the detected train ,
Train control, wherein the ground device can perform the train control on the train by judging the approach and advance of the train to its own control section independently of other ground devices apparatus. A control section for controlling the approach and advance of a train to prevent a collision of a train is defined, and a ground apparatus that performs train control by performing wireless communication with an on-board apparatus of a train located in the control section,
When train detection is performed by an approach train detection device that is installed at a predetermined distance from the approach end of the self-control section and detects a train that is about to enter the self-control section, a radio directed to the detected train A communication start control process for starting control of communication and establishing control for establishing wireless communication with an approaching train;
While the wireless communication is established, train position information reception processing for receiving information on the train position measured by the onboard device of the train from the train as needed,
Based on the information on the train position received by the train position information reception process, an entry determination process for determining whether the train has entered the own control section;
A train control start process for starting the train control for the train when it is determined that the vehicle has entered by the entry determination process;
Based on the information on the train position received by the train position information reception process, an advance determination process for determining whether the train has advanced from its own control section;
A train control end process for ending the train control for the train when it is determined that the vehicle has advanced by the advance determination process;
When train detection is performed by an advancing train detection device that is installed at a predetermined distance from the advancing end of the self-control section and detects a train that has advanced from the self-control section, wireless communication with the detected train is terminated. A communication end control process for performing control, and
By executing the above, the above-mentioned train control for the train can be performed by judging the approach and advance of the train to the own control section independently of other ground devices.

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