JP6534624B2 - On-vehicle apparatus, train equipped with on-vehicle apparatus and signal security system - Google Patents

Description

  The present invention relates to a signal security system using message circulation.

  In railways, conventionally, track circuit devices, switch devices and signal devices have been interlocked to construct a signal security system which does not permit the entry of trains into a dangerous route such as collision or derailment. However, regarding the conventional signal security system, for example, in Patent Document 1, “The track circuit device electrically insulates the rail, connects the power supply to one end, connects the relay to the other end, and A device that detects a short circuit between rails, whose task is high maintenance and maintenance cost of the device. As a solution, "a signal that secures the security of a train traveling in a predetermined section based on a telegram. In the security system, the telegram patrols the trains and the equipment along the route which are present in a predetermined section, and the block occupancy right information in which the occupation right of the train can be set in each block divided into a plurality of sections in the section It is disclosed that "the composition has".

  The signal security system using the message circulation secures the exclusive right of the track range intended for traveling by updating the information of the message from which the on-board device mounted on the train is circulated at any time, and the track range It is a mechanism to convert the rolling stock included in and drive. Therefore, when a plurality of trains try to travel along competing routes in turn, the on-board device mounted on the preceding trains has an occupation right of the range in the telegram after the preceding trains have left the competing range. Release Next, an on-board device mounted on the following train secures the exclusive right of the range on the telegram, and switches the rolling units included in the range to a direction for opening the route for the purpose of traveling Only then can the following trains follow the intended path.

Unexamined-Japanese-Patent No. 2006-232106

In the signal security system using the circulation of the telegram described above, the telegram is circulated among devices present in a control area (which will be described later, but the entire travel route of the train is divided into a predetermined range). Therefore, even if the on-board device of the preceding train goes out of the conflicting range of its own train, it can not release the exclusive right of the range until the telegram is circulated to itself. In addition, even if the on-board device of the following train releases the exclusive right of the range to the on-board equipment of the preceding train, the exclusive right of the range may be secured until the telegram is circulated to itself. Can not. That is, depending on the circulation order of the telegram and the circulation timing, it may take more than necessary time to release and secure the exclusive right. This excessive time leads to a factor that impedes high-density train operation.
An object of the present invention is to solve the problem that requires more time than necessary to release and secure the aforementioned exclusive right.

  In order to solve the above problems, the present invention is an on-vehicle device mounted on a train for updating and transmitting and receiving telegrams, wherein the telegrams are circulated among a plurality of trains traveling on a traveling path in a specific area, The on-vehicle apparatus is characterized by including information on a message acquisition desired time indicating a time when the message is required, and determining the on-vehicle apparatus to directly transmit the message based on the information on the message acquisition desired time.

  According to the present invention, after the preceding train finishes traveling in the conflicting range of the course, the exclusive right of the range by the preceding train is released, and the following train secures the exclusive right of the range and can run. It is possible to reduce the time to reach, thereby enabling high-density train operation.

FIG. 1 is a diagram showing the configuration of a first embodiment of the signal security system according to the present invention. FIG. 2 is a diagram showing the relationship between the area of the route and the blocks. FIG. 3 is a diagram showing a route of a train traveling in a block in the area. FIG. 4 is a diagram showing the format of the security telegram used in the first embodiment. FIG. 5 shows the contents of the security message in steps 1 and 4 of the first embodiment. FIG. 6 shows the contents of the security message in steps 5, 7 and 8 of the first embodiment. FIG. 7 is a diagram showing the configuration of a second embodiment of the signal security system according to the present invention. FIG. 8 is a diagram showing the format of a security message used in the second embodiment. FIG. 9 shows the contents of the security message of steps 1, 2, 4 and 5 of the second embodiment. FIG. 10 shows the contents of the safety message in steps 6 and 8 of the second embodiment. FIG. 11 is a diagram showing another example of the security message. FIG. 12 is a diagram showing still another example of the security message.

In the present invention, when a plurality of trains are going to travel along competing routes in turn, the on-board device of the preceding train has run its own region where it competes with the routes of other following trains, The assumed time when the exclusive right of the range can be released is entered in advance on the message as the desired message acquisition time. When transmitting the message, the on-board device of the other train checks the desired message acquisition time by each on-vehicle device written in the message, and if this time has passed, the vehicle having the desired time entered Send a message to the upper device. By this, the on-board device of the preceding train can release the exclusive right of the range for the following trains immediately after the own train finishes traveling the range.
In addition, the on-board device of the following train writes in advance on the telegram the exclusive right reservation information for reserving the exclusive right of the range competing with the route of the preceding train. After releasing the exclusive right of the range, the onboard device of the preceding train checks the exclusive right reservation information of the range, and transmits the telegram to the onboard device of the subsequent train which has reserved the exclusive right. As a result, the on-board apparatus of the following train can secure the exclusive right of the range immediately after the on-board apparatus of the preceding train releases the exclusive right of the range.
Hereinafter, an embodiment of a signal security system according to the present invention will be described in more detail using the drawings.

  FIG. 1 is a diagram showing the configuration of a first embodiment of the signal security system according to the present invention. As shown in FIG. 1, in the first embodiment, an on-board device 101 mounted on the train 1, an on-board device 102 mounted on the train 2, an on-board device 103 mounted on the train 3, and their on-board devices A security telegram 201, which is a telegram for circulating between, and a roll control unit 105 for controlling the roll 5 are provided. In each embodiment of the present invention, a message used in the signal security system is treated as a "security message." Moreover, the on-board apparatus mounted on the train is hereinafter referred to as "on-train apparatus on train".

  The entire route on which the train travels is divided into a plurality of predetermined control areas (hereinafter referred to as "areas"), and one area is further divided into a plurality of blocks. FIG. 2 is a diagram showing an example of the area and the block. The entire route is divided into three areas of area 10, area 20 and area 30, and area 10 is divided into five blocks of block 11, block 12, block 13, block 14 and block 15.

  FIG. 3 is a diagram showing the course of a train traveling on blocks 11 to 15 in the area 10. As shown in FIG. The bold arrows indicate the course of the train. The course is the way the train travels. For example, the path 16 is a path from the block 12 to the block 13, and the path 17 is a path from the block 12 to the block 11. Further, with regard to the direction of the rolling tool 5, the direction in which the path 16 is opened is localized, and the direction in which the path 17 is opened is opposite. The term "localization" and "inversion" are terms used to indicate the direction of a roller, and "localization" refers to the steady opening direction, and "opposition" refers to the opposite direction of localization.

Next, the security message 201 manages information of on-board devices of all the trains traveling in the area 10, occupancy range information of each train, reservation information of the occupancy range, and message acquisition desired time information by each on-vehicle device. Then, the security message 201 is circulated among on-board devices of all the trains traveling in the area 10.
The security message 201 may manage each piece of information described above in any form. FIG. 4 is a diagram showing the format of the security message 201 used in the first embodiment. The security message 201 includes an area identification field 211, a member list field 212, a block occupation right field 213, a message acquisition desired time field 214 by each on-vehicle device, and a block occupation right reservation field 215.

In the area identification column 211, identification information of the area managed by the safety message 201 is entered.
In the member list column 212, identification information of each train traveling in the area is entered.

  In the block occupancy right column 213, identification information of a train having an occupancy right for each block in the area is entered. Although the occupation range information of each train may be managed in any form, in the first embodiment, the block occupation right column 213 is used to manage the occupation range information of each train. Therefore, the on-board device of each train always has a mechanism to ensure that the block is occupied before entering the block. That is, the block occupancy right must be secured to enter the block, and only one train can be secured for one block. The on-board apparatus of each train is a mechanism capable of securing the block occupancy right by filling in the identification information of the own train only when the other safety information 201 is received and there is no entry by another train.

  In the telegram acquisition desired time column 214, information on a telegram acquisition desired time indicating the time when the on-board device of each train traveling in the area requires the telegram is entered. When transmitting the security message 201, each on-vehicle device confirms the desired message acquisition time by the other on-vehicle device, and if this time has passed, the on-vehicle device on which the desired time is entered Send 201. Otherwise, the security message 201 is transmitted to the next on-board apparatus on the member list. In the case of the last on-vehicle device on the member list, it transmits to the first on-vehicle device on the member list.

  In the block occupation right reserved column 215, identification information of a train that has reserved the block occupation right is entered. When the security message 201 is received, there is an entry by another train, and when the block occupation right can not be secured, the identification information of the own train is entered in the block occupation right reservation column 215. Thereby, the exclusive right of the block can be reserved. When releasing the block occupation right, each on-vehicle device confirms the occupation right reservation column 215 of the block, and if there is a reservation, the train has reserved the security telegram 201 updated by releasing the block occupation right. Send to on-board devices. Otherwise, it sends to the next device on the member list. The last on-vehicle device on the member list transmits to the first on-vehicle device on the member list.

  Next, a mechanism in which the signal security system of the first embodiment realizes train interval control and exclusive control and route configuration control in a certain area will be described. As an example, the case where the train 1 travels on the route 16 shown in FIG. 3 will be mentioned. FIG. 5 shows the contents of the safety message 201 in step 1 and step 4.

(1-1) Step 1
When the train 1 tries to travel on the route 16, the on-board device 101 of the train 1 receives the security message 201, and the block occupancy of the blocks 12 and 13 of the block occupancy right column 213 of the security message 201 Confirm that there is no entry by other trains. After that, the occupation right of the block is secured by entering the identification number ("train 1") of the own train. At the same time, check the desired message acquisition time by other on-vehicle devices. If there is a field for which this time has passed, the security message 201 is transmitted to the on-vehicle apparatus in which the desired time is entered. Otherwise, the security message 201 is transmitted to the next on-board apparatus on the member list (in this example, the on-board apparatus 103 of the train 3).

(1-2) Step 2
The rolling tool 5 on the block 12 securing the exclusive right is turned to the direction (localization) for opening the track 16. In the first embodiment, the on-board device 101 of the train 1 directly instructs the switch controller 105 that controls the switch 5 in any form, although the switch 5 may be switched in any form. To communicate.

(1-3) Step 3
Upon receiving the instruction described above, the switch controller 105 switches the switch in the direction in which the instruction is received. After the completion of the conversion, the switch controller 105 notifies the on-vehicle device 101 of the completion of the conversion.

(1-4) Step 4
The on-vehicle apparatus 101 that has received the notification of the conversion completion gives the train 1 a permission to proceed the route 16. After that, each time the safety telegram 201 is received, the on-board device 101 secures the exclusive right of the train 1 based on the operation plan and the operation state of the train 1 (for example, train schedule and time information of automatic operation instruction). The expected time when the exclusive right can be released by leaving the block is entered in the message acquisition desired time column 214, and the updated security message 201 on the member list on the member list (in this example, the device on the train 3) Send to 103). At this time, if the desired message acquisition time is close to the current time, for example, the time from the current time to the desired message acquisition time, one on-vehicle device receives the security message 201 and updates it, and the next on-vehicle device is updated. If it is shorter than the time it takes to transmit to the next on-board device, the transmission is suspended. In that case, the corresponding on-vehicle apparatus waits for a condition for releasing the block exclusive right to be satisfied, and then updates the security message 201 and transmits the updated message to the next on-vehicle apparatus.

  When communication of the security message is performed, it is performed by a method capable of confirming that the security message has been reliably transmitted to the other side so that there is no interception or interference of the communication, falsification of data, copying, or loss. For example, encryption and decryption of communication, addition of serial number or time information, check of communication time, pre-confirmation and post-confirmation of transmission / reception source, data reply and data correctness check by data error detection code are performed.

  Subsequently, when the signal security system of the first embodiment tries to travel along a competing route in turn by a plurality of trains, immediately after the preceding train releases the exclusive right of the competing block, the exclusive right is released and Explain the mechanism that can be secured. As an example, after the preceding train 1 travels the route 16 shown in FIG. 3, the case where the following train 2 travels the route 17 shown in FIG. 3 will be mentioned. FIG. 6 shows the contents of the security message in step 5, step 7 and step 8.

First, the mechanism until the on-board device 101 gives the train 1 the travel permission of the route 16 is the same as the steps 1 to 4 described above.
Next, the on-board device 102 of the train 2 that intends to travel on the route 17 reserves a block occupation right, and secures the occupation right of the block after the preceding train 1 has passed the competing block. The system behavior up to giving the progress permission of the course 17 will be described.

(1-5) Step 5
When the on-vehicle device 102 of the train 2 receives the security message 201, the on-vehicle device 102 confirms the occupancy of the blocks 12 and 11 in the block occupancy right column 213 of the security message 201. As a result, the exclusive right of the blocks 12 and 11 secured by the train 1 can not be secured. Therefore, the on-vehicle apparatus 102 writes the identification information ("train 2") of its own train in the occupation right reservation column 215 of the blocks 12 and 11 of the security telegram 201, and reserves the block occupation right, and thereafter the security telegram 201 Is transmitted to the next on-board device on the member list (in this example, the on-board device 101 of the train 1).

(1-6) Step 6
After the message acquisition desired time by the train 1 in which the security message 201 has been completed has elapsed, the on-vehicle device that transmits the security message 201 transmits the security message 201 to the on-vehicle device 101 of the train 1.

(1-7) Step 7
The on-board device 101 of the train 1 having received the security message 201 releases the exclusive rights of the blocks 11 and 12 if the rear end of the train 1 has passed through the block 12, thereby updating the security message 201 updated by this block 11 And 12 are transmitted to the on-board device 102 of the train 2 that is reserved.

(1-8) Step 8
The on-board device 102 of the train 2 having received the security message 201 confirms the block occupancy right column 213 of the security message 201, secures the occupancy rights of the blocks 12 and 11, and causes the security message 201 to be the next vehicle on the member list. It transmits to the upper apparatus (in this example, the on-board apparatus 101 of the train 1).
(1-9) Step 9
The on-vehicle device 102 converts the rolling tool 5 on the block 12 securing the exclusive right in a direction (opposition) for opening the path 17. When confirming the completion of the conversion, the on-vehicle device 102 gives the train 2 the travel permission of the route 17. This is the same as the operation mode of the on-board device 101 and the roll controller control unit 105 in the steps 2 to 4 described above.

  Thus, with regard to the train 1 traveling on the route 16 and the train 2 that intends to drive the route 17 thereafter, interval control and exclusive control of the trains and configuration control of the route are realized. In particular, in steps 6 to 7, immediately after the train 1 passes through the block 12, the security message 201 is transmitted to the on-board device 101, so that the block occupation right can be released without any time loss. Also, in steps 7-8, immediately after the exclusive right of block 12 is released, the security telegram 201 is transmitted to the on-vehicle device 102 of the train 2 that has reserved this exclusive right. Securing can be performed without time loss.

  Although the first embodiment adopts a configuration in which the security message is circulated among on-board devices mounted on the train, a configuration in which the roll controller control device is included in the members to be circulated is also conceivable. In this case, the on-board device can instruct the switch controller to switch the switch via the security message.

  FIG. 7 is a diagram showing the configuration of a second embodiment of the signal security system according to the present invention. As shown in FIG. 7, in the second embodiment, the on-board unit 101 of the train 1, the on-board unit 102 of the train 2, the on-board unit 103 of the train 3, and a switch control unit that controls the switch 5. 105 and a security message 301 which is a message to be circulated among those devices.

  In the second embodiment, the security message 301 includes information on the on-board devices of all trains traveling in the area 10 and information on the full-turn controller control device in the area 10, occupancy range information for each train, reservation information for the occupancy range, It manages electronic message acquisition desired time information by the device (on-vehicle device or switch controller), and direction information for all switches in the area 10, lock state, and information of direction reservation. Then, the security message 301 is circulated among the devices existing in the area (on-vehicle device and roll controller control device).

  The security message 301 may manage each piece of information described above in any form. FIG. 8 is a diagram showing the format of the security telegram 301 used in the second embodiment. The security message 301 includes an area identification column 311, a member list column 312, a block occupation right column 313, a message acquisition desired time column 314 by each device (on-vehicle apparatus or switch control device), a block occupation right reservation column 315, A roll direction indication column 316, a roll state column 317, and a roll direction reservation box 318 are provided.

  The area identification column 311, the member list column 312, the block occupation right column 313, and the message acquisition desired time column 314 and the block occupation right reservation column 315 by each device (on-board device or switch control device) are described respectively. This is the same as the fields 211, 212, 213, 214, and 215 in the security message 201 of the first embodiment.

  In the rolling device direction indication column 316, instruction information for indicating the turning direction of the rolling device is entered by the on-board device of the train having an occupation right of the range (block) including the rolling device. Ru. When the on-vehicle device writes this instruction information, it transmits the security telegram 301 to the switch control device that controls the switch to be instructed, and the switch control device follows the instruction. Switch the roller.

  The roll controller status field 317 is filled with information on the lock state of the roll holder by the roll controller. If stereotaxic conversion is complete, "stereotactic lock" is entered; if pseudomorphic conversion is complete, "antistatic lock"; otherwise, "non-lock" is entered. When the conversion is completed and the stereotactic lock or the reverse lock is entered, the roll controller has the right to occupy the range (block) including the roll holder, and writes the direction of this turn direction Send a security message to the on-board device of the The on-vehicle device can confirm the completion of the conversion of the roller by confirming the roller state column 317 on the received security message.

  In the roll direction reservation column 318, reservation information of the turn direction of the roll is written by the on-board device of the train which has reserved the exclusive right of the range (block) including the roll. When the safety telegram 301 is received, if the entry by another train has already been made and the block occupation right can not be secured, the occupation right of the block is reserved by entering the identification information of the own train in the block occupation right reservation column 315 At the same time, when the block includes the rolling unit, the direction to the rolling unit can be reserved by entering the desired turning direction in the rolling direction reservation column.

  When releasing the block exclusive right, the on-vehicle apparatus confirms the exclusive right reserved column 315 of the block. Enable reservation of block ownership if there is a reservation. Furthermore, if the block includes a roll, the reservation of the roll direction of the roll is also enabled. In this case, the identification number of the own train is erased from the block occupation right column 313 to be released, and the turning direction is erased from the switch direction indication column 316, respectively, and the identification number of the reserved train Fill in the direction of the turning of the rolling machine. Then, the updated security telegram 301 is transmitted to the switch control device that controls the switch for which the reservation has become valid. On the other hand, if there is no reservation, the next device on the member list is deleted by deleting the identification number of the own train from the block occupation right column 313 to be released and the change direction from the switch direction indication column 316. Send to the device or switch controller). The last device on the member list (on-board device and switch controller) transmits to the first device on the member list (on-vehicle device and switch controller).

  Next, the signal security system of Example 2 demonstrates the structure which implement | achieves space | interval control and exclusive control of a train, and structure control of a course in an area. As an example, the case where the train 1 travels on the route 16 shown in FIG. 3 will be mentioned. FIG. 9 shows the contents of the security message in step 1, step 2, step 4 and step 5.

(2-1) Step 1
When the train 1 tries to travel on the route 16, the on-board device 101 of the train 1 receives the security message 301, and the block occupancy of the blocks 12 and 13 in the block occupancy right column 313 of the security message 301 Make sure there is no entry by other trains' on-board equipment. After the confirmation, the on-vehicle apparatus 101 writes the identification number of its own train and secures the exclusive right of the block. Then, the on-vehicle device 101 writes the localization change instruction to the rolling tool 5 on the block 12 on which the exclusive right is secured in the rolling device direction indication column 316 and controls the rolling tool 5 to perform rolling. The security message 301 is transmitted to the device control device 105.

(2-2) Step 2
The switch control device 105 that has received the safety message 301 changes the position of the switch 5 based on the switch direction information entered in the switch direction column 316 of the safety message 301. Start converting. Then, the estimated time at which conversion of the rolling stock is completed is entered in the message acquisition desired time column 314, and the security message 301 is updated. At this time, the message acquisition desired time by another on-vehicle apparatus is confirmed, and if there is a column where this time has passed, the security message 301 is transmitted to the on-vehicle apparatus in which the desired time is entered. Otherwise, the security message 301 is transmitted to the next device on the member list (in this example, the on-board device 101 of the train 1).

(2-3) Step 3
The on-vehicle apparatus that transmits the security message 301 after the message acquisition desired time by the switch control device 105 completed in the security message 301 has elapsed, transmits the security message 301 to the switch control device 105. Send.

(2-4) Step 4
If the switch control device 105 receives the safety message 301 and the localization conversion of the switch 5 is completed, the switch 5 moves to the switch state field 317 of the safety message 301, and the shift device 5 moves to the position chain. It writes in that it was locked, and transmits the security message 301 to the on-board device 101 that has issued this localization change instruction.

(2-5) Step 5
The on-board device 101 of the train 1 that has received the safety message 301 confirms that the rolling unit 5 has been converted to the localization, and gives the train 1 the travel permission of the route 16. After that, every time the safety message 301 is received, based on the operation plan and operation state of the train 1 (for example, train schedule, time information of automatic operation instruction, etc.), the train 1 leaves the block where the exclusive right is secured. An expected time at which the exclusive right can be released is entered in the message acquisition desired time column 314. The security message 301 is updated and transmitted to the next device on the member list (in this example, the on-vehicle device 103 of the train 3). At this time, if the desired message acquisition time is close to the current time, for example, the time from the current time to the desired message acquisition time causes one on-vehicle device to receive the security message and update it and transmit it to the next device If it is shorter than the time required to do the transmission, the transmission to the next device (on-vehicle device or roll controller) is suspended. In this case, after waiting for a condition that can release the block exclusive right is established, the security message 301 is updated and transmitted to the next device (on-vehicle device or switch controller) on the member list.

  In addition, when communicating the security telegram, it is performed by a method capable of confirming that the security telegram has been reliably transmitted to the other party so that there is no interception or interference of the communication, falsification of data, copying, or loss. For example, encryption and decryption of communication, addition of serial number or time information, check of communication time, pre-confirmation and post-confirmation of transmission / reception source, data reply and data correctness check by data error detection code are performed. This point is the same as that of the first embodiment.

  Subsequently, when the signal security system of the second embodiment tries to travel along a competing route in turn by a plurality of trains, immediately after the preceding train releases the exclusive right of the competing block, the exclusive right is released and Explain the mechanism that can be secured. As an example, after the preceding train 1 travels the route 16 shown in FIG. 3, the case where the following train 2 travels the route 17 shown in FIG. 3 will be mentioned. FIG. 10 shows the contents of the security message in step 6 and step 8.

First, the mechanism until the on-board device 101 gives the train 1 the travel permission of the route 16 is the same as the steps 1 to 5 described above.
Next, the on-board device 102 of the train 2 that intends to run on the route 17 reserves a block occupation right, and after leaving the range (block) where the train 1 competes, this range (block) is secured to The system behavior up to giving the travel permission of the course 17 will be described.

(2-6) Step 6
When the on-vehicle apparatus 102 of the train 2 receives the security message 301, the on-board apparatus 102 confirms the occupancy of the blocks 12 and 11 in the block occupancy right column 313 of the security message 301. As a result, the exclusive right of the blocks 12 and 11 secured by the train 1 can not be secured. Therefore, the on-vehicle device 102 writes the identification information ("train 2") of its own train in the exclusive use reservation column 315 of the blocks 12 and 11 to reserve the block exclusive right, and the roll unit 5 rotates. The direction (open position) for opening the path 17 is entered in the device direction reservation column 318. Then, the security message 301 is transmitted to the next device on the member list (in this example, the switch control device 105).

(2-7) Step 7
After the message acquisition desired time by the on-board device 101 of the train 1 in which the safety message 301 has been completed has passed, the device (on-vehicle device or roll controller control device) that transmits the safety message 301 It transmits to the on-board device 101 of the train 1.

(2-8) Step 8
The on-board device 101 of the train 1 having received the safety message 301 releases the ownership of the blocks 11 and 12 if the rear end of the train 1 has passed through the block 12, thereby blocking the on-board device 102 of the train 2. 11. Activate the reservation of the exclusive right of 11 and 12 and the reservation of the turning direction of the switch 5 which the block 12 includes. Then, the updated security telegram 301 is transmitted to the switch control device 105 that controls the switch 5.
After that, the roll 5 is converted to the opposite position, the on-board device 102 confirms this conversion, and the flow until the train 2 is permitted to proceed with the route 17 It is the same as the operation mode of steps 2 to 5 by the lamp control unit 105.

  As described above, interval control and exclusive control of the trains and configuration control of the course are realized for the train 1 traveling on the course 16 and the train 2 for which the traveling of the course 17 is intended thereafter. In particular, in steps 7-8, immediately after the train 1 passes through the block 12, the reservation of the ownership of the block 12 of the train 2 and the conversion reservation of the switch 5 with respect to the opening direction of the path 17 become effective. It is possible to release and secure the block occupation right and to instruct the direction of the switch without time loss.

  When applying the signal security system using the circulation of the security message to a route which operates trains at high density, many trains and on-vehicle devices mounted thereon are present in one area. When the security message is circulated in the order of the member list, the time taken for the members of all members to go around the on-board device becomes longer as the number of members increases.

  However, in the signal security system according to the present invention, as described in the first and second embodiments above, even in such a case, an estimated time or the like when each member device can release the exclusive right is used as a message acquisition desired time in advance. While filling in the security message, at the time of sending the security message, check the message acquisition desired time by other member devices, and if this desired time has passed, send the security message to the member device in which this desired time is entered. Send. As a result, processing such as release of block ownership can be performed without time loss. Also, each member device writes the exclusive right reservation information on the security message in order to reserve the exclusive right in the range in which the exclusive right is already secured by the other member devices. After releasing the exclusive right of the range, the member apparatus securing the exclusive right secures the exclusive right of block without transmitting any time loss by transmitting a security message to the reserved member apparatus or activating the exclusive right reservation. be able to. That is, when operating a large number of trains, the operation interval can be shortened, and high-density train operation is possible.

  As described above, in the two embodiments of the present invention, the release time of the secured occupied range is assumed based on the operation plan and the operation state of the train, and the configuration is described in which the telegram is entered as the telegram acquisition desired time. However, not only the release time of the secured occupancy range but also the time to secure the occupancy range is assumed based on the operation plan and operation state of the train, and the required time for the next route and the required point of the next route are reached The earliest time of the considered conditions may be entered as the desired message acquisition time in consideration of the time. This enables the security message to be circulated more efficiently.

  Furthermore, in order to ensure the reliability of the entire system, each member device always transmits and receives the security message within a predetermined time, thereby confirming the soundness at the time of circulation of the security message, and within this time the security If a message can not be received even once, a mechanism that outputs an alarm can be adopted. However, when the circulation order is dynamically changed, an alarm may be output even when there is no problem in the circulation of the security message. In such a case, each member device may determine the message acquisition desired time in consideration of the timeout time in order to confirm the soundness at the time of circulation of the security message. As a result, the reliability of the entire system can be ensured even in a mechanism for outputting an alarm.

Although the present invention has been described above by the two embodiments, the present invention is not limited to the above two embodiments and includes various modifications. Further, each component constituting the two embodiments is not limited to the form described in the two embodiments.
For example, although the area 10 is divided into five blocks, it may be divided into six or more. The number of trains present in the area is not limited to three and may be three or more, as a matter of course, in order to aim for high-density operation. Also, instead of managing all block occupation rights in an area with one security message, if management content is distinguished so as not to overlap, it may be managed with a plurality of security messages.

  Next, a modification of the safety message will be shown. Although the preceding embodiments have been described in the configuration in which one reservation field in the security message is provided, a plurality of reservation fields having different priorities may be provided. That is, with the release of the block occupation right of the preceding train, the reservation may be executed from the highest priority reservation column, and the priority of the other reservation columns may be raised.

  In each of the previous embodiments, when the occupied range and the reserved reservation range of each train are expressed in block units, the range is not a block unit but an absolute position such as a relative position from a certain reference point or a latitude and longitude It may be represented. As a specific example, FIG. 11 shows the occupied range and occupied reserved range of each train by the relative position from a certain reference point, and shows an example filled in the security message. Further, FIG. 12 shows the occupied range and occupied reserved range of each train by the absolute position of the latitude and longitude, and shows an example filled in the security message.

One, two, three trains, five rolling equipment, 10, 20, 30 areas,
11, 12, 13, 14, 15 blocks, 16, 17 paths,
101, 102, 103 on-vehicle equipment, 105 rolling equipment controller,
201, 301 safety message

Claims (15)

An on-board device that is installed in a train to update and transmit and receive telegrams,
The telegram is circulated among a plurality of the trains traveling on a traveling path in a specific area, and includes information on a telegram acquisition desired time indicating a time when the telegram is required,
The on-vehicle apparatus determines the on-vehicle apparatus to directly transmit the message based on the information on the desired message acquisition time. The on-vehicle apparatus according to claim 1,
The message includes information on an occupied range of the travel path occupied by each of the plurality of trains,
The on-vehicle device writes in the telegram as information on the desired telegram acquisition desired time, based on the operation plan or the operation state of the own train, the assumed time when the occupied range occupied by the own train can be released. On-board equipment to feature. The on-vehicle apparatus according to claim 2,
The on-vehicle apparatus is characterized in that, when the estimated time is close to the current time, the on-vehicle apparatus determines whether to transmit the written electronic message for circulation or to suspend the transmission. An on-vehicle apparatus according to claim 2 or 3,
When the on-vehicle device receives the message, the on-vehicle device directly transmits the message to the on-vehicle device in which the desired message acquisition desired time is entered if it is after the estimated time based on the information on the desired message acquisition time. On-board equipment. An on-vehicle apparatus according to any one of claims 2 to 4, wherein
The message includes information on an occupancy range reservation indicating a train that reserves next occupancy of the occupancy range with respect to the information on the already set occupancy range,
The on-vehicle apparatus determines the on-vehicle apparatus to directly transmit the telegram based on the information on the occupied area reservation when releasing the occupied area occupied by the own train. . The on-vehicle apparatus according to claim 5,
When the other train has already set the information of the occupied range with respect to the occupied range of the traveling path where the own train intends to run, the on-vehicle device may use the telegram for the occupied by the own train. An on-vehicle apparatus characterized in that information on range reservation is entered. A signal security system comprising: an on-vehicle apparatus according to any one of claims 1 to 6; and a switch control unit for controlling a switch arranged in the traveling path,
The telegram is additionally circulated to the train with the roll controller control device, and further includes information on a roll indicator direction indication indicating a turn direction of the roll indicator;
When the on-vehicle device writes in the telegram the information on the occupied range of the travel path occupied by its own train, the information on the roll direction indication for the rolling switches arranged in the occupied range A signal security system characterized in that the electronic message written in the same is also written directly to a switch controller for controlling the switch. The signal security system according to claim 7, wherein
When the teleporter control device receives the telegram, an estimated time at which the conversion of the telescopic device is completed is information of the telegraphics acquisition desired time based on the information on the teleport direction indication. A signal security system characterized by filling in a message. The signal security system according to claim 8, wherein
When the on-vehicle device receives the message, the on-vehicle device directly transmits the message to the switch control device based on the information on the message acquisition desired time if the time is later than the estimated time. system. The signal security system according to claim 9, wherein
The message further includes information on the status of the switch indicating the conversion status of the switch;
The roller switch control device switches its own roller based on the information on the roller direction indication, and, after completion of the conversion, switches the switch state of its own roller. A signal security system characterized by filling in the message as the device state information and directly transmitting the written message to the on-vehicle device in which the information of the roll direction instruction is written. The signal security system according to claim 10, wherein
When the on-vehicle device receives the telegram, the on-board device confirms the information on the rolling unit status of the rolling unit included in the occupied range occupied by the own train, and permits or does not allow the train to proceed. A signal security system characterized by determining permission. An on-vehicle apparatus according to any one of claims 1 to 11,
The on-vehicle device writes an estimated time for securing an occupied range of the traveling path for planning traveling based on an operation plan or an operating state of its own train in the telegram as information on the telegram acquisition desired time. An on-vehicle device characterized by An on-vehicle apparatus according to any one of claims 1 to 12,
The on-vehicle apparatus is characterized in that information on the desired message acquisition time in consideration of a timeout time is entered in the message. The signal security system according to any one of claims 7 to 11, wherein
The signal security system, wherein the switch controller writes information on the desired message acquisition time in consideration of a timeout time in the message.   A train equipped with the on-vehicle apparatus according to any one of claims 1 to 13.

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