JP5622697B2 - Train communication system and train communication method - Google Patents

Description

  The present invention relates to a train communication system that performs communication between a train and the ground side.

  Conventionally, when performing communication between the ground side and a train using wireless communication technology, there is a method of handling one train or train as one domain, which is disclosed, for example, in Patent Document 1 below. Specifically, the domain name control device includes a train diagram database (DB), a vehicle operation database (DB), and a travel performance database (DB) as a train operation system. Based on the contents of these databases, a DNS (Domain Name System) data is registered and deleted. The apparatus on the ground side performs communication with the train side with reference to the registered DNS data.

JP 2003-60670 A

  However, according to the above-described conventional technology, DNS data is registered β hours before a train having a certain train number is operated, and DNS data is deleted α hours after the train operation is completed. For this reason, there is a problem that information on train numbers for one train is temporarily registered on the DNS server, and there is a possibility of trying to communicate with a vehicle with a train number that does not exist. It was. In addition, since the train diagram DB, the vehicle operation DB, and the travel performance DB are referred to, there is a problem that it cannot be handled when the train operation system is not introduced.

  The present invention has been made in view of the above, and it is possible to obtain a train communication system capable of avoiding a temporary double registration of a train number when changing the train number of one train set. With the goal.

  In order to solve the above-described problems and achieve the object, the present invention provides a train communication system including an on-board system mounted on a train and a ground system installed on the ground, wherein the on-board system is When the on-board communication control device is provided, and the ground system includes a communication control server and a train control terminal, the on-board communication control device accepts a change in the train number of the train on which the own device is mounted, and A change notification indicating the change of the train number is transmitted to the communication control server, and the communication control server changes the train number registration information corresponding to the train number and the address addressed to the train based on the change notification. When the data necessary for control of the controlled train generated by the train control terminal is transmitted from the ground system to the on-board communication control device of the controlled train, the communication control Using the registered address over server, characterized in that.

  According to this invention, when changing the train number of one formation train, there exists an effect that it can avoid that a train number is temporarily double-registered.

FIG. 1 is a diagram illustrating a configuration example of a train communication system according to the first embodiment. FIG. 2 is a diagram illustrating a configuration example of the on-vehicle communication control device according to the first embodiment. FIG. 3 is a diagram illustrating a configuration example of the communication control server according to the first embodiment. FIG. 4 is a sequence diagram illustrating a process of changing the train number according to the first embodiment. FIG. 5 is a diagram illustrating a configuration example of registration information held by the server registration information holding unit. FIG. 6 is a diagram illustrating a configuration example of the communication control server according to the second embodiment. FIG. 7 is a sequence diagram illustrating a process of changing a train number according to the second embodiment. FIG. 8 is a diagram illustrating a configuration example of a train communication system according to the third embodiment. FIG. 9 is a diagram illustrating a configuration example of the communication control server according to the third embodiment. FIG. 10 is a sequence diagram illustrating a process of changing a train number according to the third embodiment. FIG. 11 is a sequence diagram illustrating a process of changing a train number according to the fourth embodiment.

  Hereinafter, embodiments of a train communication system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating a configuration example of a train communication system according to the present embodiment. The train communication system includes an on-vehicle system 1 and a ground system 5, and the two systems are connected via a network 4. For convenience of explanation, FIG. 1 shows a single on-board system 1, but this is not a limitation. The ground system 5 can be connected to a plurality of on-vehicle systems 1 mounted on different trains via the network 4.

  The on-board system 1 is mounted on a train, receives a change in train number, and executes an application in accordance with data such as operation information received from the ground system 5. The ground system 5 acquires and holds the train number information of the train on which the on-board system 1 is mounted from the on-board system 1, and the on-board system 1 is loaded with data such as operation information with the train number as a destination. To the train. The network 4 is an existing line such as the Internet.

  The configuration of the on-vehicle system 1 will be described. The on-board system 1 includes an on-board communication control device 2 and an application execution unit 3. The on-board communication control device 2 receives the change of the train number and transmits a change notification based on the change of the train number to the ground system 5. The application execution unit 3 executes the application according to data such as operation information received from the ground system 5. For example, it is possible to control the air conditioning, electric power, motor, etc. in the train as necessary according to the received data.

  The configuration of the ground system 5 will be described. The ground system 5 includes a router 6, a switch (SW) 7, a communication control server 8, and a train control terminal 9. The router 6 is a communication device that connects the local system and the network 4. The switch 7 is a communication device that relays communication with the communication control server 8 and the train control terminal 9. The communication control server 8 acquires and holds information on the train number of the train on which the on-board system 1 is mounted from the on-board system 1, and controls communication between the on-board system 1 and the own system. The train control terminal 9 acquires train number information from the communication control server 8, generates data necessary for control of the train such as operation information with the train number as a destination, and to the train on which the on-board system 1 is mounted. It transmits and controls the air conditioning, electric power, motor, etc. of the train, and manages traveling information from the train.

  FIG. 2 is a diagram illustrating a configuration example of the on-vehicle communication control device 2 according to the present embodiment. The onboard communication control device 2 includes an onboard registration information processing unit 21, an onboard registration information holding unit 22, an onboard control unit 23, and an onboard communication unit 24. The on-board registration information processing unit 21 receives an input for changing the train number from the crew member, and changes the contents of the on-board registration information holding unit 22. Moreover, you may provide a display part so that a crew member can confirm. The on-board registration information holding unit 22 is a storage unit that holds information on the current train number of the train on which the own system is mounted. The on-vehicle control unit 23 performs control for transmitting a change notification to the ground system 5 side. The on-vehicle communication unit 24 performs a process of transmitting a change notification to the ground system 5 side and receiving data from the ground system 5. The on-vehicle communication unit 24 transfers the data received from the ground system 5 to the application execution unit 3.

  FIG. 3 is a diagram illustrating a configuration example of the communication control server 8 according to the present embodiment. The communication control server 8 includes a server registration information processing unit 81, a server registration information holding unit 82, a server control unit 83, and a server communication unit 84. The server registration information processing unit 81 accepts input of the composition number and IP address assigned to each train, and changes the contents of the server registration information holding unit 82. In addition, a display unit may be provided so that a system administrator or the like can check. The server registration information holding unit 82 is a storage unit that holds information on the train number, current train number, and IP address of a train connected to the own system. The server control unit 83 performs control to change the contents of the server registration information holding unit 82 via the server registration information processing unit 81 when a change notification is received from the on-board system 1 side, and from the train control terminal 9 Control etc. which transmit data, such as received operation information, to the on-board system 1 side are performed. The server communication unit 84 performs processing for transmitting data such as operation information to the onboard system 1 and receiving a change notification from the onboard system 1.

  Next, a process for changing a train number as a train communication method in the train communication system will be described. FIG. 4 is a sequence diagram showing a process of changing the train number in the present embodiment. First, the crew changes the train number from A1 to A2 from the on-board communication control device 2 at a timing such as when the train arrives at the station (step S1). Specifically, the on-board communication control device 2 stores the train number input from the on-board registration information processing unit 21 in the on-board registration information holding unit 22. Next, in the on-board communication control device 2, the on-board control unit 23 sends a change notification indicating that the train number has been changed for the change received by the on-board registration information processing unit 21 to the on-board communication unit 24. To the communication control server 8 (step S2). The contents of the change notification are composition number: H1, train number: A2, IP address: 192.168.0.1.

  In the communication control server 8, the server communication unit 84 receives the change notification, and the server control unit 83 changes the content of the registration information in the server registration information holding unit 82 via the server registration information processing unit 81 (step S3). . Specifically, the train number A2 for the train number H1 is added to the registration information, and the train number A1 information is deleted. FIG. 5 is a diagram illustrating a configuration example of registration information held by the server registration information holding unit 82. The registration information includes a registration number (No.), a composition number, a train number, and an IP address. Here, as shown in FIG. As shown in FIG. 5 (b), the registration information, which has the composition number H1, train number A1, IP address 192.168.0.1 as No. 1, is changed to No. 1 is registered in the server registration information holding unit 82 as organization number: H1, train number: A2, IP address: 192.168.0.1. In FIG. 5, the server registration information holding unit 82 holds only the registration information of the train with one train number, but is an example, and registration information can be held for a plurality of trains.

  Next, when the train control terminal 9 needs to control the state of the train such as air conditioning of the train, an address inquiry is first transmitted to the communication control server 8 (step S4). At this time, in the first inquiry, an address inquiry is made for the train number A1.

  In the communication control server 8, when the server communication unit 84 receives the address inquiry, the server control unit 83 confirms the contents of the server registration information holding unit 82 via the server registration information processing unit 81, but already has the train number A1. Registration information has been deleted. Therefore, the server control unit 83 transmits a response without data to the train control terminal 9 via the server communication unit 84 (step S5).

  The train control terminal 9 that has received the response without data next transmits an address inquiry about the train number A2 as a second inquiry (step S6). In addition, the train control terminal 9 shall be equipped with the information etc. which the train for control changes into what kind of train number in the memory | storage part etc. which are not shown in figure.

  In the communication control server 8, when the server communication unit 84 receives an address inquiry, the server control unit 83 confirms the contents of the server registration information holding unit 82 via the server registration information processing unit 81. Since the registration information is held for the train number A2, the server control unit 83 transmits an IP address notification for the train with the train number A2 to the train control terminal 9 via the server communication unit 84 (step S7).

  The train control terminal 9 that has received the IP address information transmits data for controlling the train to the train number A2 with the received IP address as the destination (step S8).

  In the on-vehicle communication control device 2 for the train having the train number A2, the on-vehicle communication unit 24 transfers the received data to the application execution unit 3. And the on-board communication part 24 receives the process result which performed control from the application execution part 3, and transmits this process result to the train control terminal 9 (step S9). Thereby, in the train control terminal 9, the address of the train to be controlled is acquired from the communication control server 8, and data necessary for control is transmitted to the on-board communication control device 2 of the train to be controlled. Can be controlled.

  As described above, in this embodiment, when the crew changes the train number of one train in the on-board communication control device 2, the on-board communication control device 2 transmits a change notification to the communication control server 8. To do. And the communication control server 8 decided to change the registration information currently hold | maintained based on the received change notification. Thereby, it can prevent registering the IP address of a some train number with respect to the composition number. Moreover, since the train communication system in the present embodiment does not refer to the train diagram DB, the vehicle operation DB, and the travel performance DB, the train communication system can also be applied to a system without a train operation system including these databases.

Embodiment 2. FIG.
In the first embodiment, when the change notification is received from the on-board communication control device, the communication control server changes the registration information and responds to the address inquiry from the train control terminal. In the present embodiment, the communication control server that has received the change notification from the on-board communication control device transmits the change notification to the train control terminal. A different part from Embodiment 1 is demonstrated.

  The configuration of the train communication system is the same as that of FIG. 1, but in this embodiment, a communication control server 8 a is provided instead of the communication control server 8. FIG. 6 is a diagram illustrating a configuration example of the communication control server 8a according to the present embodiment. It differs from the communication control server 8 (see FIG. 3) in that a server control unit 83a is provided instead of the server control unit 83. In addition to the function of the server control unit 83, the server control unit 83 a further performs control for transmitting a change notification to the train control terminal 9.

  Next, a process for changing a train number as a train communication method in the train communication system will be described. FIG. 7 is a sequence diagram showing processing for changing a train number in the present embodiment. Since the processing from step S1 to S3 is the same as that of the first embodiment, the description thereof is omitted. In the communication control server 8a, when the server control unit 83a changes the content of the registration information in the server registration information holding unit 82 via the server registration information processing unit 81 (step S3), the server control unit 83a Based on the content of the changed registration information, the train information of the train having the train number A2 is transmitted as a change notification to the train control terminal 9 via the communication unit 84 (step S11). Specifically, it is notified that the train number of the train with composition number H1 has been changed to A2.

  The train control terminal 9 that has received the change notification changes the destination information held in a cache (not shown). When the train control terminal 9 needs to control the state of the train, such as air conditioning of the train, data for controlling the train is transmitted to the train number A2 based on the changed destination information ( Step S8). The subsequent processing is the same as in the first embodiment.

  As described above, in the present embodiment, when the communication control server 8a receives a change notification from the on-board communication control device 2, the change notification indicating that the train number has been changed to the train control terminal 9. Send. The train control terminal 9 changes the IP address information held in the cache using the received change notification. Thereby, compared with Embodiment 1, the time of the destination change accompanying the change of the train number, specifically, the time until the train control terminal 9 acquires the address of the train to be controlled can be shortened. . Further, the train control terminal 9 can transmit data to the train number A2 without making an address inquiry.

  In addition, although the information transmitted to the train control terminal 9 from the communication control server 8a is only that the train number of the train of the formation number: H1 is changed to A2, it is not limited to this. For example, every time the train number is changed, the communication control server 8a may transmit the stored registration information (organization number, train number, IP address) to the train control terminal 9. Even in this case, the same effect as described above can be obtained.

Embodiment 3 FIG.
In the first and second embodiments, the train control terminal communicates directly with the train side using the registration information acquired from the communication control server. In this Embodiment, a train control terminal communicates with the train side via a communication control server. A different part from Embodiment 1, 2 is demonstrated.

  FIG. 8 is a diagram illustrating a configuration example of a train communication system according to the present embodiment. The train communication system is different from the first embodiment (see FIG. 1) in that the train communication system includes a ground system 5a instead of the ground system 5. The ground system 5a includes a router 6, a SW 7, a communication control server 8b, and a train control terminal 9. As shown in FIG. 8, here, each component is connected in series. That is, the train control terminal 9 is connected to the communication control server 8b.

  FIG. 9 is a diagram illustrating a configuration example of the communication control server 8b according to the present embodiment. It differs from the communication control server 8 (see FIG. 3) in that a server control unit 83b is provided instead of the server control unit 83. In addition to the function of the server control unit 83, the server control unit 83 b further relays communication between the train control terminal 9 and the on-board communication control device 2.

  Next, a process for changing a train number as a train communication method in the train communication system will be described. FIG. 10 is a sequence diagram showing processing for changing a train number in the present embodiment. Since the processing from step S1 to S3 is the same as that of the first embodiment, the description thereof is omitted. Next, when the train control terminal 9 needs to control the state of the train such as air conditioning of the train, the train control terminal 9 does not use the IP address addressed to the train of the target train number, and the communication control server Data for controlling the train with the train number A2 as the destination is transmitted to 8b (step S21).

  In the communication control server 8b, when the server control unit 83b receives the data addressed to the train number A2 via the server communication unit 84, the server control unit 83b searches the server registration information holding unit 82 via the server registration information processing unit 81 (step S22). ). When the server control unit 83b acquires the IP address information of the train having the train number: A2 having the train number: A2 as a result of the search, the server control unit 83b takes the data received from the train control terminal 9 with the acquired address as the destination. : Transmit to the on-vehicle communication control device 2 of the train of A2 (step S23).

  In the on-board communication control device 2 of the train with the train number A2, the process when data is received from the communication control server 8b is the same as the process when data is directly received from the train control terminal 9 in the first embodiment. is there. Thereafter, the on-board communication control device 2 transmits the processing result of executing the application not to the train control terminal 9 but to the communication control server 8b (step S24).

  In the communication control server 8b, since the server control unit 83b receives the processing result received from the on-board communication control device 2 via the server communication unit 84 for the data addressed to the train number A2 previously transmitted, this processing is performed. A result is transmitted to the train control terminal 9 via the server communication part 84 (step S25).

  As described above, in the present embodiment, the train control terminal 9 designates a transmission destination and transmits data to the communication control server 8b that holds the train number, train number, vehicle number, and IP address. Send. Then, the communication control server 8b transmits the data received from the train control terminal 9 to the designated transmission destination IP address. As a result, the train control terminal 9 can communicate with the on-board communication control device 2 on the train side without transmitting an address inquiry to the communication control server 8b. Moreover, the train control terminal 9 does not need to hold the IP address information of each train. If the IP address of the communication control server 8b is known, the train control terminal 9 can provide data to the corresponding train by adding the train and train information. Can be sent.

Embodiment 4 FIG.
In the first to third embodiments, the communication control server changes the registration information based on the change notification from the on-board communication control device. In the present embodiment, a method for updating or deleting registration information in the communication control server will be described. A different part from Embodiments 1-3 is demonstrated.

  As an example, the configuration of the train communication system according to the first embodiment will be described. Note that the present invention can also be applied to the second and third embodiments. FIG. 11 is a sequence diagram showing a process for changing a train number in the present embodiment. Since the processing from step S1 to S3 is the same as that of the first embodiment, the description thereof is omitted. The on-vehicle communication control device 2 indicates that the IP address, train number, and train number information of the own train are valid for a specified period (fixed intervals) even when the crew member does not change the train number. A notification is transmitted to the communication control server 8 (step S31). The content of the address notification is the same as the content of the change notification.

  When receiving the address notification, the communication control server 8 updates the registration information held in the server registration information holding unit 82 (step S32). When there is no change in the train number, the content of the registration information after the update is the same as the content of the registration information before the update.

  When the processes in steps S31 to S32 are repeatedly performed between the on-board communication control device 2 and the communication control server 8, and then the on-board communication control device 2 cannot transmit an address notification at regular intervals (step S33). The communication control server 8 deletes the registration information on the assumption that the registration information about the on-board communication control device 2 has become invalid (step S34). For example, when the on-board communication control device 2 cannot send address notifications at regular intervals, for example, when the power of the train on which the on-board communication control device 2 is mounted is turned off, or when the train ends and the train is There is a case of entering the garage.

  As described above, in the present embodiment, the on-board communication control device 2 periodically transmits an address notification to the communication control server 8 regarding the train on which the own device is mounted. In the communication control server 8, when the address notification is not received from the on-board communication control device 2 for a certain period, the registration information about the train on which the on-board communication control device 2 is mounted is deleted. Thereby, when the train number becomes invalid, such as when the train power is turned off or when entering the garage, the registration information can be deleted immediately.

  In the second embodiment, the change notification is transmitted from the communication control server 8a to the train control terminal 9. However, when the registration information is deleted, the communication control server 8a transmits a deletion notification as the change notification. As a result, the present embodiment can be applied to the second embodiment.

  In addition, in Embodiment 1-4, although the case where communication with the train side and the ground was demonstrated, the object to move is not limited to a train, For example, also to a communication system with an aircraft, a ship, a bus, etc. Applicable.

  As described above, the train communication system according to the present invention is useful for a communication system in which one side that performs communication moves, and is particularly suitable for communication with a train.

DESCRIPTION OF SYMBOLS 1 On-board system 2 On-board communication control apparatus 3 Application execution part 4 Network 5, 5a Ground system 6 Router 7 Switch 8, 8a, 8b Communication control server 9 Train control terminal 21 On-board registration information processing part 22 On-board registration information holding Unit 23 On-vehicle control unit 24 On-vehicle communication unit 81 Server registration information processing unit 82 Server registration information holding unit 83, 83a, 83b Server control unit 84 Server communication unit

Claims (8)

A train communication system including an on-board system mounted on a train and a ground system installed on the ground, wherein the on-board system includes an on-board communication control device, and the ground system includes a communication control server and train control. If you have a terminal,
The on-vehicle communication control device comprises:
Receiving a change in the train number of the train on which the device is installed, sending a change notification indicating the change in the train number to the communication control server,
When there is no change in the train number, an address notification indicating the same train number as the train number indicated in the change notification is transmitted to the communication control server at a specified interval,
The communication control server
Based on the change notification, change the train number registration information and the train number registration information corresponding to the address addressed to the train,
Wherein when the train transmit the data necessary for the control of the control terminal is generated control target of the train from the ground system to the on-train communication control device of the control target of the train, have use the registered address to the communication control server,
When the address notification is received, the registration information of the train on which the on-board communication control device is mounted is updated based on the address notification, and when the address notification is not received for a predetermined period, the on-board communication control device Delete registration information for trains with
A train communication system. The train control terminal is
Using the train number of the train to be controlled, the communication control server is inquired about the address addressed to the train, and the on-board communication control device for the train to be controlled is sent to the address notified from the communication control server. Send the necessary data to control the train,
The communication control server
When receiving an inquiry about the address addressed to the train using the train number of the train to be controlled from the train control terminal, if there is no registration information of the corresponding train number, a response with no registration information is applicable, When there is train number registration information, notify the train control terminal of the address of the target train number,
The on-vehicle communication control device comprises:
The processing result by the vehicle control application executed according to the data necessary for the control of the train on which the own apparatus received from the train control terminal is transmitted to the train control terminal.
The train communication system according to claim 1. The communication control server
Send information on the changed train number to the train control terminal,
The train control terminal is
Based on the information received from the communication control server, the information of the train number and address held by itself is changed, and the address corresponding to the train number after the change is set as the destination to the on-board communication control device of the train to be controlled. Send the data necessary to control the train,
The on-vehicle communication control device comprises:
The processing result by the vehicle control application executed according to the data necessary for the control of the train on which the own apparatus received from the train control terminal is transmitted to the train control terminal.
The train communication system according to claim 1. The train control terminal is
Data necessary for control of the train to be controlled is sent to the communication control server, with the train number indicating the train as the destination,
The communication control server
When the train number indicating the train is received from the train control terminal and the data necessary for controlling the train to be controlled is received, the registration information is searched and the address corresponding to the train number that is the destination of the received data is specified. Then, the received data is transferred to the on-board communication control device destined for the address, and the processing result received as a response to the data from the on-board communication control device is transferred to the train control terminal,
The on-vehicle communication control device comprises:
Transmitting the processing result by the vehicle control application executed according to the data necessary for the control of the train on which the own device received from the communication control server is mounted, to the communication control server;
The train communication system according to claim 1. A train communication method in a train communication system including an on-board system mounted on a train and a ground system installed on the ground, wherein the on-board system includes an on-board communication control device, and the ground system controls communication. When equipped with a server and a train control terminal,
The on-board communication control device receives a change in the train number of the train on which the own device is installed, and a train number change step,
The on-board communication control device transmits a change notification indicating the change of the train number to the communication control server, and a change notification step;
The communication control server, based on the change notification, a registration information change step for changing the train formation number and the registration information of the train number corresponding to the address addressed to the train,
Including
Wherein when the train transmit the data necessary for the control of the control terminal is generated control target of the train from the ground system to the on-train communication control device of the control target of the train, have use the registered address to the communication control server,
further,
When the on-board communication control device does not change the train number, an address notification step of transmitting to the communication control server an address notification indicating the same train number as the train number indicated by the change notification at a specified interval; ,
When the communication control server receives the address notification, a registration information update step for updating the registration information of the train on which the on-board communication control device is mounted based on the address notification;
When the communication control server does not receive the address notification for a specified period, a registration information deletion step of deleting registration information of the train on which the on-board communication control device is mounted,
Train communication method, which comprises a. The train control terminal uses the train number of the train to be controlled, an address inquiry step for inquiring the address addressed to the train to the communication control server,
When the communication control server receives an inquiry from the train control terminal, when there is no registration information of the corresponding train number, it responds without registration information, and when there is registration information of the corresponding train number, A response step of notifying the train control terminal of the address of the train number;
The train control terminal, with the address received as a destination, a data transmission step for transmitting data necessary for controlling the train to the on-board communication control device of the train to be controlled;
A processing result transmission step for transmitting a processing result by the vehicle control application executed by the on-board communication control device according to the received data to the train control terminal;
The train communication method according to claim 5 , further comprising: A registration information transmission step in which the communication control server transmits information related to the changed train number to the train control terminal;
The train control terminal changes the information of the train number and address held by itself based on the received information, and the on-board communication control device of the train to be controlled with the address corresponding to the changed train number as the destination A data transmission step of transmitting data necessary for controlling the train to
A processing result transmission step for transmitting a processing result by the vehicle control application executed by the on-board communication control device according to the received data to the train control terminal;
The train communication method according to claim 5 , further comprising: The train control terminal transmits data necessary for control of the train to be controlled, with a train number indicating a train as a destination, and a data transmission step for transmitting to the communication control server;
Data in which the communication control server searches for registration information to identify an address corresponding to the train number that is the destination of the received data, and transfers the received data to the on-board communication control device destined for the address A transfer step;
A processing result transmission step of transmitting a processing result by the vehicle control application executed by the on-board communication control device according to the received data to the communication control server;
The communication control server, a processing result transfer step of transferring the received processing result to the train control terminal,
The train communication method according to claim 5 , further comprising:

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