JP2015159700A - train radio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a rearmost vehicle to transmit train position information to a ground control device, while suppressing complication of a system and an increase in cost, even when information from a lead vehicle is not transmitted to the ground control device.SOLUTION: When an onboard control device 63b and an onboard radio device 62b of a lead vehicle 60b are in a normal state, the lead vehicle 60b gives/receives information to/from a ground control device 3A, and a rearmost vehicle 60a only receives the information from the ground control device 3A. When the onboard control device 63b or the onboard radio device 62b of the lead vehicle 60b is in an abnormal state, the rearmost vehicle 60a gives/receives the information to/from the ground control device 3A in place of the lead vehicle 60b.

Description

  The present invention relates to a train radio system.

  In a conventional train radio system, an on-board device mounted on a train communicates with a ground device to control the operation of the train. In such a train radio system, train position information can be transmitted to the ground control device when the on-board control device or the on-board radio device constituting the on-board device fails and becomes unusable. This will greatly affect the train operation.

  In the following Patent Document 1, the automatic driving device, the safety device, and the central device are coupled to each other between the leading vehicle and the trailing vehicle via a data transmission line including a transmission / reception interface device, and the train operation is actually performed. Continuously transmit operation data from the automatic driving device and safety device of the leading vehicle engaged in to the automatic driving device and safety device of the trailing vehicle, and at least one of the automatic driving device and the safety device of the leading vehicle is functioning normally due to some abnormality When it becomes difficult to perform the normal function, the central device stops the data transmission function of the device that has become difficult to perform the normal function, and has received the operation data by the rear vehicle until the normal function is performed. The technology related to the operation method of the railway vehicle automatic driving device that switches to the device and continues the train operation is disclosed. .

  In this technique, the central device monitors whether the automatic driving device and the safety device are operating normally.

JP-A-5-38005

  In the train radio system, the last vehicle is replaced with the train position information on behalf of the first vehicle, even if it is not required until the last vehicle substitutes the function of the first vehicle as described in Patent Document 1 above. Is desired to be added to the ground control device.

  However, in the above prior art, since the central device performs monitoring and control of the automatic driving device and the security device, it is difficult to realize the alternative transmission function when the central device fails.

  In addition, the above-described prior art requires a separate device called a central device, so that there is a problem that the system becomes complicated and the cost increases.

  The present invention has been made in view of the above, and it is possible to increase the complexity and cost of the system even when an abnormality occurs in the leading vehicle and information from the leading vehicle to the ground control device fails. An object of the present invention is to provide a train radio system in which a rearmost vehicle can transmit train position information to a ground control device in place of the first vehicle while suppressing the vehicle.

  In order to solve the above-described problems and achieve the object, the present invention is a train radio system that wirelessly controls the operation of a train in a radio train control section on a track, On-board control device that generates train position information based on ground element information and train speed information detected on the train, an on-board wireless device that transmits train position information generated by the on-board control device, and the vehicle A top base vehicle comprising: a radio base station that communicates with an upper radio device; and a ground control device that receives the train position information via the radio base station and controls the operation of the train based on the train position information. When the on-board control device and the on-board radio device are normal, the leading vehicle exchanges information with the ground control device, and the last vehicle only receives information with the ground control device. Do Wherein the first abnormality of the vehicle on the controller or the vehicle on the wireless device in a vehicle, the end vehicle on behalf of the leading vehicle, characterized in that the transmitting and receiving information to and from the ground train control unit.

  According to the present invention, even when an abnormality occurs in the leading vehicle and information from the leading vehicle to the ground control device is not delivered, it is possible to replace the leading vehicle while suppressing the complexity and cost increase of the system. There is an effect that the last vehicle can transmit the train position information to the ground control device.

FIG. 1 is a diagram illustrating a configuration example of a train radio system according to the present embodiment. FIG. 2 is a diagram illustrating a configuration example of a train on which an on-board device connected by a communication line to which the train radio system according to the present embodiment is applied. FIG. 3 is a diagram illustrating the concept of transmission frames and slots and an image in which communication state information with the leading vehicle is stored in the corresponding slot. FIG. 4 is a diagram for explaining the main operation of the train radio system according to the present embodiment. FIG. 5 is a sequence diagram illustrating an operation for determining a failure or a malfunction of the leading vehicle.

  A train radio system according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

Embodiment.
FIG. 1 is a diagram illustrating a configuration example of a train radio system according to the present embodiment. The train radio system is a system that wirelessly controls the operation of a train in a radio train control section on a track. FIG. 1 shows an on-line management device 1, a train radio system network 2, ground control devices 3A to 3D, base networks 4A to 4D, radio base stations 5a to 5h, a train 6, and a track 7.

  The train 6 includes a vehicle 60a and a vehicle 60b at both ends. The vehicle 60a includes an on-board device 61a, and the vehicle 60b includes an on-vehicle device 61b. The onboard device 61a includes an onboard radio device 62a and an onboard control device 63a, and the onboard device 61b includes an onboard radio device 62b and an onboard control device 63b. The on-board device 61 a and the on-board device 61 b can communicate with each other via the communication line 68. If the direction of the arrow is the traveling direction, the vehicle 60b is the leading vehicle, and the vehicle 60a is the last vehicle. Although FIG. 1 shows an example in which the onboard control device 63a is mounted on the leading vehicle 60b and the onboard control device 63b is mounted on the last vehicle 60a, it is not limited to these examples. The on-board control devices 63a and 63b may be mounted on the last vehicle 60a or the first vehicle 60b. The following description will continue with the example of FIG.

  The standing line management device 1 is a device that manages the IDs of the onboard device 61b included in the leading vehicle 60b and the onboard device 61a included in the last vehicle 60a, and backs up the base devices included in the ground control devices 3A to 3D. This base device is used when it fails and restarts. Although not shown, the standing line management apparatus 1 includes a system management apparatus.

  The train radio system network 2 is an entire network in the radio train control section, and connects the on-line management device 1 and the ground control devices 3A to 3D.

  One ground control device 3A to 3D is provided in each base (four bases (bases A to D are illustrated in FIG. 1)). This is a device that tracks the current position of the train 6 based on position information received from the on-board wireless device 62b, and performs interlock control, train interval control, and the like. Ground control devices 3A to 3D include a base terminal and a base device.

  The base networks 4A to 4D are networks provided for each base, and connect the base devices included in the ground control devices 3A to 3D and the radio base stations 5a to 5h.

  The track 7 is a track on which the train 6 operates. The operation of the train 6 is controlled by the train radio system shown in FIG. Further, a ground element 8 (position correction ground element) is installed on the track 7. Although FIG. 1 shows an example in which one ground element is installed in one section, the present invention is not limited to this, and a plurality of ground elements may be installed in one section.

  The radio base stations 5a to 5h communicate with the on-board radio device 62b in the on-board device 61b included in the leading vehicle 60b of the train 6. The wireless base stations 5a to 5h are assigned unique IDs (ID1 to ID8), respectively. The frequencies used for communication by the radio base stations 5a to 5h are fixed, and the frequencies of adjacent base stations are different.

  In FIG. 1, four pairs of frequencies (f1 to f4) are illustrated as frequencies used by the radio base stations 5a to 5h for communication, and the radio base stations 5a to 5d are assigned f1 to f4 in this order, The wireless base stations 5e to 5h are assigned f1 to f4 in this order. The four pairs of frequencies f1, f2, f3, and f4 are different frequencies.

  FIG. 2 is a diagram illustrating a configuration example of a train on which an on-board device connected by a communication line to which the train radio system of the present embodiment is applied. FIG. 2 shows vehicles 60 a and 60 b equipped with on-board devices 61 a and 61 b connected by communication line 68. As described above, the onboard device 61a includes the onboard wireless device 62a and the onboard control device 63a, and the onboard device 61b includes the onboard wireless device 62b and the onboard control device 63b. The on-board controller 63a includes a train control unit 65a that controls the operation of the train 6, and a position detection unit 66a that detects the position of the train 6 and outputs the position to the train control unit 65a. The on-vehicle control device 63b is similar, and includes a train control unit 65b and a position detection unit 66b.

  FIG. 2 shows only the devices necessary for the description of the train radio system of the present invention, but it goes without saying that the vehicles 60a and 60b are actually equipped with other on-vehicle equipment. 2 shows a configuration in which the on-board radio devices 62a and 62b are not included in the on-board control devices 63a and 63b, but the on-board radio devices 62a and 62b are included in the on-board control devices 63a and 63b. It may be a configuration.

  Next, an outline of the operation of the train radio system will be described. Here, although the on-board device 61a mounted on the vehicle 60a will be described, the operation of the on-board device 61b mounted on the vehicle 60b is the same.

  During operation of the train 6, the position detection unit 66 a detects the ID of the ground unit 8 (ground unit ID) installed on the track 7. The train control unit 65a calculates the travel distance from the reference position based on the speed information of the train 6 transmitted to the on-board device 61a with the position where the ground element ID is detected as the reference position, and on the track 7 The position of the train 6 is obtained.

  The train position information 80 obtained by the train control unit 65a is transmitted to the on-board wireless device 62a, and the on-board wireless device 62a that has received the train position information 80 sets this information in a transmission frame (see FIG. 3) described later. The In addition to the train position information 80, for example, an ID (train ID) for identifying each train is set in the transmission frame. The transmission frame is transmitted to the radio base stations 5a to 5h corresponding to the current position of the train 6 via the on-board radio device 62a. The radio base stations 5a to 5h that have received this transmission frame extract the train position information 80 and the like. The extracted train position information 80 is transmitted to any one of the ground control devices 3A to 3D corresponding to the wireless base station (for example, the ground control device 3A if the wireless base station 5a).

  The ground control devices 3 </ b> A to 3 </ b> D detect the position of the train 6 that operates in the section managed by the own device, and exchange train position information 80 with other ground control devices via the train radio system network 2. The stop limit position information 81 is generated based on the train position information 80, and the stop limit position information 81 is transmitted to the radio base stations 5a to 5h.

  The radio base stations 5a to 5h set the stop limit position information 81 in the transmission frame and transmit it to the on-board radio device 62a. Information other than the stop limit position information 81 (for example, an ID (base station ID) for identifying each base station) is set in the transmission frame.

  The ground control devices 3 </ b> A to 3 </ b> D generate the on-line management information from the train position information 80 of the train 6 existing in the own section, and transmit it to the on-line management device 1 via the train radio system network 2. The standing line management apparatus 1 grasps the positions of all the trains that are in the wireless train control section based on this standing line management information.

  The on-board wireless device 62a that has received the transmission frame from the wireless base stations 5a to 5h extracts the stop limit position information 81 and transmits it to the train control unit 65a.

  The train control unit 65a generates a speed check pattern (a pattern signal indicating speed control characteristics) based on the stop limit position information 81, and checks the generated speed check pattern and the speed information of the train 6. When the speed information exceeds the speed check pattern, the train control unit 65a generates a brake command and transmits it to a brake control device (not shown).

  According to such a train radio system, the train speed can be controlled without using a conventional track circuit. Therefore, not only cost reduction and safety improvement can be achieved, but also appropriate train interval control can be performed, and transportation efficiency can be improved.

  Next, the operation of the main part of the train radio system according to the present embodiment will be described with reference to the drawings in FIGS. FIG. 3 is a diagram illustrating the concept of transmission frames and slots and an image in which communication state information with the leading vehicle is stored in the corresponding slot. FIG. 4 is a conceptual diagram for explaining the main operation of the train radio system according to the present embodiment. FIG. 5 is a sequence diagram illustrating an operation for determining a failure or a malfunction of the leading vehicle. In the following description, as shown in FIGS. 4 and 5, it is assumed that the train 6 communicates with the ground control device 3A via the radio base station 5a.

  A transmission frame when a telegram (train control telegram) is transmitted from the radio base station 5a (ground: A) to the train 6 (on the vehicle: B) is, for example, a time division multiplexing system (TDM: as shown in FIG. 3A). The transmission frame of Time Division Multiplexing is adopted. As shown in FIG. 3A, the transmission frame includes 12 information slots (# 1, # 2, # 3, # 4,..., # 12) and 4 broadcast slots (G1,..., G4). It has 16 time slots divided into 3B and 3C are enlarged views of information slots. In the information slot, the train position information 80 and stop limit position information 81 described above are stored, as well as the train ID (ID = 3 is exemplified) and bit information (“0” indicating the communication state with the leading vehicle as shown in the figure). "Or" 1 "as an example, hereinafter referred to as" communication state information ") is stored. On the other hand, a telegram (train position information telegram) from the train 6 (on the vehicle: B) to the radio base station 5a (ground: A), for example, as shown in FIG.

  Here, when the communication status information is “0”, it is expressed as “normal”, and when the communication status information is “1”, it is expressed as “abnormal”. FIG. 3 (b) to FIG. 3 (c). The change indicates that communication with the leading vehicle is not possible, and the last vehicle receives a transmission frame with this status information to determine that there was some problem with the leading vehicle. can do.

  Next, an operation sequence among the leading vehicle 60b, the last vehicle 60a, and the ground control device 3A will be described with reference to FIGS.

  The leading vehicle 60b transmits the train position information to the ground control device 3A (FIG. 3 (a), FIG. 4 (a), FIG. 5: step ST101). The ground control device 3A that has received the train position information adds the stop limit position information generated based on the train position information and the information added with the communication state information with the leading vehicle 60b ("0" representing normal in the example of FIG. 3). Is set in the corresponding transmission frame and transmitted to the leading vehicle 60b and the last vehicle 60a (FIG. 3 (d), FIG. 4 (a), FIG. 5: step ST102). Supplementally, the leading vehicle 60b performs transmission / reception with the ground control device 3A, but the tail vehicle 60a only monitors (receives) the transmission frame transmitted from the ground control device 3A. A design in which the last vehicle 60a transmits / receives data to / from the ground control device 3A is also conceivable, but it unnecessarily wastes system resources (in the example of FIG. 3, the information slot is halved (12 → 6). ), Not preferred.

  Thereafter, the operation of transmitting and receiving train position information and stop limit position information is repeatedly executed (FIG. 4A, FIG. 5: steps ST103 and ST104). When an abnormality occurs in the leading vehicle 60b, information from the leading vehicle 60b does not reach the ground control device 3A (FIG. 4 (b), FIG. 5: step ST105).

  The abnormality of the leading vehicle 60b mentioned here may be a failure of the on-board wireless device 62b, the on-board control device 63b and the communication line 68 in the leading vehicle 60b, a combined failure of these devices, or the like. However, the single failure of the communication line 68 is not included. This is because in the case of a single failure of the communication line 68, the on-board wireless device 62b and the on-board control device 63b are operating normally, and therefore communication between the leading vehicle 60b and the ground control device 3A is normally performed. . Further, when the on-board wireless device 62b and the on-board control device 63b of the leading vehicle 60b are configured with, for example, a double redundant system, the case where both the main system and the subordinate system (standby system) have failed is described here. This is a failure of the leading vehicle 60b.

  Returning to the description of the operation, the ground control device 3A determines that an abnormality has occurred in the leading vehicle 60b when, for example, a transmission frame to be transmitted from the leading vehicle 60b has timed out and has not been reached (FIG. 4B). FIG. 5: Step ST106), information including the stop limit position information generated based on the train position information and the communication state with the leading vehicle 60b (“1” indicating abnormality in the example of FIG. 3, hereinafter “state information”) Is set in the corresponding transmission frame and transmitted to the last vehicle 60a (FIG. 4 (c), FIG. 5: step ST107). Since the leading vehicle 60b is located in the communication area of the radio base station 5a, the leading vehicle 60b reaches the leading vehicle 60b regardless of whether it can be received.

  The last vehicle 60a receives the transmission frame transmitted from the ground control device 3A, thereby recognizing that an abnormality has occurred in the first vehicle 60b (FIG. 4 (c), FIG. 5: step ST108). Thereafter, the rearmost vehicle 60a itself generates train position information and transmits it to the ground control device 3A instead of the first vehicle 60b (FIG. 4 (c), FIG. 5: step ST109). Upon receiving the train position information from the last vehicle 60a, the ground control device 3A sets the stop limit position information and the state information ("1" indicating abnormality) in the corresponding transmission frame and transmits the information to the last vehicle 60a ( FIG. 4 (c), FIG. 5: Step ST110). Thereafter, the operation of transmitting and receiving train position information and stop limit position information is repeatedly executed between the last vehicle 60a and the ground control device 3A.

  As described above, according to the train radio system of the present embodiment, when the onboard control device and the onboard radio device in the leading vehicle are normal, the leading vehicle exchanges information with the ground control device, The rearmost vehicle only receives information from the ground control device, and when the onboard control device or onboard radio device in the leading vehicle is abnormal, the last vehicle replaces the leading vehicle with the ground control device instead of the leading vehicle. Since it was decided to exchange information, even if the onboard control device or onboard radio device of the leading vehicle breaks down, the rear vehicle can be trained without complicating the system and without increasing costs. Position information can be transmitted to the ground control device.

  Further, according to the train radio system of the present embodiment, when the on-board control device in the leading vehicle is normal, the leading vehicle exchanges information with the ground control device, and the last vehicle communicates with the ground control device. When the onboard control device in the leading vehicle is abnormal, the last vehicle exchanges information with the ground control device instead of the leading vehicle. Even if the upper control device or on-vehicle wireless device fails, the rear vehicle can transmit the train position information to the ground control device without complicating the system and without increasing the cost. .

  In the present embodiment, the embodiment has been described in which the ground control device determines a failure of the onboard control device or the onboard wireless device in the leading vehicle, but the radio base station itself that directly receives the transmission frame You may make it judge. In the case of such an embodiment, it is preferable that adjacent wireless base stations communicate with each other and share necessary information so that the wireless base stations can share the failure information. .

  The configurations described in the above embodiments are examples of the configurations of the present invention, and can be combined with other known techniques, and a part of the configurations is omitted without departing from the gist of the present invention. Needless to say, it is possible to change the configuration.

  According to the present invention, even when information from the leading vehicle to the ground control device fails, the last vehicle can transmit the train position information to the ground control device instead of the leading vehicle. Useful.

  DESCRIPTION OF SYMBOLS 1 Line management apparatus, 2 train radio system network, 3A-3D ground control apparatus, 4A-4D base network, 5a-5h wireless base station, 6 train, 7 track, 8 ground element, 60a vehicle (last vehicle), 60b Vehicle (lead vehicle), 61a, 61b On-board device, 62a, 62b On-board radio device, 63a, 63b On-board controller, 65a, 65b Train control unit, 66a, 66b Position detection unit, 68 Communication line, 80 Train position Information, 81 Stop limit position information.

Claims (6)

A train radio system that wirelessly controls the operation of a train within a radio train control section on a track,
An on-board controller that generates train position information based on ground element information from the ground element on the track and train speed information detected on the train;
On-board wireless device that transmits train position information generated by the on-board control device;
A wireless base station communicating with the on-board wireless device;
Receiving the train position information via the radio base station, and a ground control device for controlling the operation of the train based on the train position information,
When the onboard control device and the onboard radio device of the leading vehicle are normal, the leading vehicle exchanges information with the ground control device, and the last vehicle exchanges information with the ground control device. Only receive,
A train radio in which the rearmost vehicle exchanges information with the ground control device instead of the first vehicle when the onboard control device or the onboard radio device of the head vehicle is abnormal. system. A train radio system that wirelessly controls the operation of a train within a radio train control section on a track,
On-vehicle equipped with a train control unit that generates train position information based on the ground element information from the ground element on the track and the train speed information detected by the train, and an on-board wireless device that transmits the train position information A control device;
A radio base station that communicates with the on-board controller;
Receiving the train position information via the radio base station, and a ground control device for controlling the operation of the train based on the train position information,
During normal operation of the onboard control device in the leading vehicle, the leading vehicle exchanges information with the ground control device, and the last vehicle only receives information with the ground control device,
The train radio system according to claim 1, wherein when the onboard control device in the leading vehicle is abnormal, the rearmost vehicle exchanges information with the ground control device instead of the leading vehicle.   The ground control device determines that an abnormality has occurred in the on-board control device or the on-board radio device in the leading vehicle when the train position information from the leading vehicle cannot be received. The train radio system according to claim 1 or 2. When the ground control device determines an abnormality of the on-vehicle control device or the on-vehicle wireless device in the leading vehicle, the ground control device sets status information indicating failure in a transmission frame to be transmitted,
The radio base station transmits the transmission frame toward the train including the failed leading vehicle,
The train radio system according to claim 3, wherein the last vehicle recognizes an abnormality of the first vehicle based on state information included in a transmission frame from the radio base station.   The wireless base station determines that an abnormality has occurred in the on-board control device or the on-board wireless device in the leading vehicle when a transmission frame from the leading vehicle fails. Item 3. The train radio system according to item 1 or 2. When the radio base station determines a failure of the on-board control device or the on-vehicle radio device in the leading vehicle, the radio base station sets status information indicating failure to the transmission frame to be transmitted, and sets the transmission frame to Send to the train including the failed leading vehicle,
The train radio system according to claim 5, wherein the last vehicle recognizes an abnormality of the first vehicle based on state information included in a transmission frame from the radio base station.

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