JP6584917B2 - Railway control system - Google Patents

Description

  The present invention relates to a technique for controlling the operation of a railway by a railway security device and an on-board device.

  A center that exchanges various information such as information for operation control and information indicating the state of the equipment between the on-board equipment that is mounted on the train and controls the traveling of the train, and the railway safety equipment such as traffic lights and switches. There is a railroad control system with equipment. In such a railway control system, for example, based on information indicating the state of each device received by the center device from the on-board device and the railroad safety device, the operation that each device should perform so as to perform a linked operation between these devices. Thus, each apparatus executes the operation determined by the center apparatus, thereby realizing safe railway operation.

  As a patent document disclosing a railway control system including the center device as described above, for example, there is Patent Document 1. Patent Document 1 includes a linked station facility such as a traffic light and a switch, a center device having an interlocking device that performs a chain function and an automatic route setting function such as a traffic light and a switch, and an on-board device mounted on a train. A train control device is described. In the train control device described in Patent Literature 1, each of the interlocking station facility, the center device, and the on-board device communicates intermittently with a communication device of a mobile phone communication system using a general-purpose telephone wireless line, so that the train traveling route Ensure the setting and train operation.

JP 2011-148349 A

  In railway control systems, high reliability is required for the exchange of information between devices. In the present application, the reliability in the exchange of information means the length of a period during which a state in which correct information is not transmitted between devices due to congestion or data loss may continue. That is, the shorter the period during which the correct information cannot be transmitted between the devices, the shorter the information exchange reliability, and the longer the period, the lower the information exchange reliability.

  In general, information exchange via a wireless communication network is less reliable than information exchange via a wired communication network. In addition, general-purpose mobile communication networks are less reliable than dedicated wireless communication networks because data traffic increases with the increase in the number of simultaneous users and temporary congestion is likely to occur.

  Since the on-board device moves as the train travels, it is difficult for the on-board device to exchange information with the center device without going through the wireless communication network. From the viewpoint of reliability in the exchange of information, it is desirable that the on-board device exchanges information with the center device via a dedicated wireless communication line. However, in order to use a dedicated wireless communication line, it is necessary to install and maintain base stations in a wide area, which is very expensive.

  In addition, railway security devices such as traffic lights and switches do not move. Therefore, from the viewpoint of reliability in the exchange of information, it is desirable that the railway security device exchanges information with the center device via a dedicated wired communication line. However, in order to use a dedicated wired communication line, it is necessary to wire and maintain the communication line with respect to each of the railway security devices that are geographically distributed, which requires a great deal of cost.

  Further, the center device does not move and the number thereof is small. Therefore, from the viewpoint of reliability in the exchange of information, it is desirable that the center device exchanges information with the on-board device and the railway security device via a dedicated wired communication line. However, the cost required for maintenance and management of a dedicated wired communication line cannot be ignored.

  In view of the above background, the present invention provides a railroad control system that can be realized at low cost without impairing the reliability required in the exchange of information between devices.

To solve the problems described above, the present invention relates to a mobile having a ruse centers apparatus is connected via the subscriber switching station to a wired communication network having a subscriber switching station, a base station and a subscriber switching station a railway security equipment and the onboard system is connected to the body communication network via the relevant base station and the subscriber switching station, the center apparatus and the railway protection apparatus, and said center device the onboard apparatus provides a railway control system for performing communication via the wired with interconnected by the wire communication network gateway switching center and gateway switching station of the mobile communication network as the first embodiment.

  According to the railroad control system of the first aspect, the center device exchanges information with the railroad security device or the on-board device via the general-purpose wired communication network maintained and managed by the communication carrier. Compared with the case where information is exchanged between the railway security device or the on-vehicle device via the mobile communication network, high reliability is ensured in the exchange of information between the devices.

The railway control system of the first aspect, the center apparatus and the railway security equipment performs in parallel a plurality of communications over a plurality of communication connections, the center apparatus and on the wheel device communication connection multiple A configuration in which a plurality of communications are performed in parallel may be employed as the second mode.

  According to the railroad control system of the second aspect, even if an unacceptable delay occurs in the transmission of information in communication via any one of the plurality of communication connections, communication via other communication connections is possible. As long as there is no unacceptable delay, there is no unacceptable delay in the transmission of information as a whole.

In the railroad control system according to the second aspect, the center device and the railroad security device transmit and receive data at a different timing at the same time interval between a plurality of communication connections, and the center device and the onboard device include a plurality of A configuration in which data is transmitted and received at different timings at the same time interval between communication connections may be employed as the third aspect.

  According to the railroad control system of the third aspect, compared to the case where data is transmitted and received at the same timing in the same time interval in a plurality of communications, it is via any one of the plurality of communication connections. When an unacceptable delay occurs in information transmission in communication, the maximum delay time in information transmission is shortened as a whole.

In the railroad control system according to the third aspect, when the center device and the railroad security device detect an abnormality in communication in any of a plurality of communication connections, a time interval of data transmission / reception in a communication connection in which no abnormality is detected is shortened. and, wherein the vehicle device and the center device to shorten the time interval between transmission and reception of data in the detection result abnormality is detected such have communications connection abnormality to have Zurekani definitive communications multiple communication connections, that A configuration may be employed as the fourth aspect.

  According to the railway control system of the fourth aspect, when an unacceptable delay occurs in the transmission of information in communication via any one of the plurality of communication connections, the delay occurs after the detection of the delay. Since the interval of information exchange through the communication connection that is not connected is shortened, the delay in communication is reduced as a whole.

  In the railway control system according to any one of the first to fourth aspects, the center device and the railroad safety device, and the center device and the on-board device specify a period in which communication is unnecessary, and the specified period A configuration in which data transmission / reception is not performed at least in part may be adopted as the fifth aspect.

  According to the railway control system of the fifth aspect, it is possible to prevent generation of useless data traffic and useless communication amount in the communication network due to transmission / reception of unnecessary data in a period in which communication is not required.

The figure which showed the structure of the railway system containing the railway control system concerning one Embodiment. The figure which showed the structure of the center apparatus concerning one Embodiment. The figure which showed the structure of the on-vehicle apparatus concerning one Embodiment. The figure which showed the structure of the switch concerning one Embodiment. The figure which shows the timing of transmission / reception of the data performed between the center apparatus concerning one Embodiment, a vehicle-mounted apparatus, or a switch. The figure which shows the timing of transmission / reception of the data performed between the center apparatus concerning one Embodiment, a vehicle-mounted apparatus, or a switch. The figure which shows the timing of transmission / reception of the data performed between the center apparatus concerning one Embodiment, a vehicle-mounted apparatus, or a switch. The figure which shows the timing of transmission / reception of the data performed between the center apparatus concerning a modification, and a vehicle-mounted apparatus or a switch. The figure which showed the structure of the railway system containing the railway control system concerning one modification.

[Embodiment]
A railway control system 1 according to an embodiment of the present invention will be described below. FIG. 1 is a diagram showing an overall configuration of a railway system 10 including a railway control system 1, a communication network to which devices constituting the railway control system 1 are connected, a branching device controlled by the railway control system 1, and a train. .

  The railway system 10 includes a track 3, a train 4 that runs on the track 3, and a branching device 5 that is disposed at a branch point of the track 3. The railway system 10 also includes a wired communication network 8 managed by a telecommunications carrier and a mobile communication network 9 managed by the telecommunications carrier.

  The wired communication network 8 includes a subscriber switching center 81 connected to a plurality of data communication devices of users of the wired communication network 8 by a communication line, and a relay connected to one or a plurality of subscriber switching centers 81 by a communication line. A switching center 82 and a gateway switching center 83 connected to one or a plurality of relay switching centers 82 by communication lines are provided.

  The mobile communication network 9 is connected to a plurality of base stations 91 wirelessly connected to a data communication device of a user of the mobile communication network 9, and to one or more base stations 91 via a communication line (or wireless). A subscriber exchange 92, a relay exchange 93 connected to the one or more subscriber exchanges 92 via a communication line, and a gateway exchange 94 connected to the one or more relay exchanges 93 via a communication line. .

  The gateway exchange 83 of the wired communication network 8 and the gateway exchange 94 of the mobile communication network 9 are interconnected.

  The data communication devices connected to the subscriber exchange 81 of the wired communication network 8 include a center device 11 managed by a railway operator and a data communication device 6 of a user other than the railway operator. That is, the wired communication network 8 is a general-purpose wired communication network used by an arbitrary user.

  The data communication devices connected to the base station 91 of the mobile communication network 9 include an on-board device 12 and a switch 13 managed by a railroad operator, and a data communication device 7 of a user other than the railroad operator. . In other words, the mobile communication network 9 is a general-purpose wireless communication network used by any user.

  The on-board device 12 is a device that is mounted on the train 4 and performs various processes for running control of the train 4. The switch 13 is a device for switching the branching device 5.

  The center device 11, the on-board device 12 and the switch 13 (the switch 13 is an example of a railroad security device) are all managed by the railroad operator and constitute the railroad control system 1.

  FIG. 2 is a diagram illustrating the configuration of the center device 11. The center device 11 includes a communication unit 111 that is connected to the subscriber switching center 81 via a communication line and performs data transmission / reception with each of the on-board device 12 and the switch 13 via the subscriber switching center 81. The communication unit 111 includes a reception unit 1111 that receives data from the on-board device 12 and the switch 13 and a transmission unit 1112 that transmits data to the on-board device 12 and the switch 13.

  In addition, the center apparatus 11 includes a data processing unit 112 that performs various data processing using data received by the receiving unit 1111. The data received by the receiving unit 1111 includes data indicating the state of the on-board device 12 and the switch 13 (hereinafter referred to as “status data”). The status data indicates, for example, information such as the current position of the train 4 and which branching path the switch 13 is switching the branching unit 5 to.

  The data processing unit 112 identifies the optimum speed of the train 4 based on the information indicated by the status data, for example. When the optimal speed of the train 4 is specified, the data processing unit 112 generates control data instructing traveling at the specified speed, and transmits the control data to the on-board device 12 via the transmission unit 1112. The on-board device 12 adjusts the speed of the train 4 according to the control data transmitted from the center device 11.

Further, the data processing unit 112 specifies, for example, the switching timing of the branching device 5 based on information indicated by the status data. When the switching timing of the specified branching device 5 arrives, the data processing unit 112 generates control data instructing switching of the branching device 5 and transmits the control data to the switch 13 via the transmission unit 1112. The switch 13 switches the branching device 5 in accordance with the control data transmitted from the center device 11.

  The data processing performed by the data processing unit 112 is not limited to the above. For example, the data processing unit 112 generates control data that instructs the driver of the train 4 to display a signal that prompts the driver of the train 4 to move forward or stop based on the information indicated by the status data. You may transmit to the on-vehicle apparatus 12. In this case, the on-board device 12 displays a signal for the driver according to the control data transmitted from the center device 11.

  The center apparatus 11 further includes a storage unit 113 that stores various data. The storage unit 113 stores data received by the reception unit 1111, data generated by the data processing unit 112, and the like.

  FIG. 3 is a diagram showing the configuration of the on-board device 12. The on-board device 12 includes a communication unit 121 that is wirelessly connected to the base station 91 and transmits / receives data to / from the center device 11 via the base station 91. The communication unit 121 includes a reception unit 1211 that receives data from the center device 11 and a transmission unit 1212 that transmits data to the center device 11.

  The on-board device 12 includes a data processing unit 122 that performs various data processing using data received by the receiving unit 1211. The data received by the receiving unit 1211 includes control data for instructing speed adjustment of the train 4, display of various messages to the driver, and the like. The data processing unit 122 performs a speed adjustment instruction for the speed control device 1232 described below, a display instruction for the display device 1233 described below, and the like according to an instruction indicating the control data.

  The on-board device 12 includes a device group 123 that is a collection of various devices that perform control of traveling of the train 4, monitoring of the state of the train 4, and the like. The device group 123 includes, for example, a speed sensor that measures the speed of the train 4, a sensor group 1231 that is a collection of various sensors such as a satellite positioning system that identifies the current position of the train 4, and a speed control that controls the speed of the train 4. A device 1232, a display device 1233 for displaying various information to the driver, and the like are included.

  The data processing unit 122 generates status data indicating the state of the train 4 using information measured by the sensor group 1231. The data processing unit 122 transmits the generated status data to the center apparatus 11 via the transmission unit 1212.

  The on-board device 12 further includes a storage unit 124 that stores various data. The storage unit 124 stores data received by the reception unit 1211, data generated by the data processing unit 122, and the like.

  FIG. 4 is a diagram showing the configuration of the switch 13. The switch 13 includes a communication unit 131 that is wirelessly connected to the base station 91 and transmits and receives data to and from the center apparatus 11 via the base station 91. The communication unit 131 includes a reception unit 1311 that receives data from the center device 11 and a transmission unit 1312 that transmits data to the center device 11. Data received by the receiving unit 1311 from the center device 11 includes control data for instructing switching of the branching device 5.

  The switch 13 includes a drive control unit 132 that controls driving by the actuator 133 according to control data included in the data received by the receiving unit 1311, and an actuator 133 that moves and switches the branching unit 5 according to control by the drive control unit 132. Is provided.

  The drive control unit 132 generates status data indicating the current state of the branching device 5 switched by driving the actuator 133. The drive control unit 132 transmits the generated status data to the center device 11 via the transmission unit 1312.

  The switch 13 further includes a storage unit 134 that stores various data. The storage unit 134 stores data received by the receiving unit 1311, data generated by the drive control unit 132, and the like.

  The center device 11 and the on-board device 12 perform a plurality of communications in parallel via a plurality of communication connections. Similarly, the center apparatus 11 and the switch 13 perform a plurality of communications in parallel via a plurality of communication connections. FIG. 5 is a diagram showing the timing of data transmission / reception performed between the center device 11 and the on-board device 12 or the switch 13. In FIG. 5, the downward direction is the positive direction of the time axis (time has elapsed from the top to the bottom). Hereinafter, the on-board device 12 or the switch 13 is referred to as “devices 12 and 13”.

  In the example shown in FIG. 5, the center apparatus 11 and the apparatuses 12 and 13 maintain two communication connections. In FIG. 5, the center device 11 simultaneously maintains the communication connection 21 established between the devices 12 and 13 and the communication connection 22 established between the devices 12 and 13, and the devices are connected via these communication connections. Data is transmitted / received to / from 12.13. Further, the devices 12 and 13 simultaneously maintain the communication connection 21 established with the center device 11 and the communication connection 22 established with the center device 11, and with the center device 11 through these communication connections. Send and receive data.

  The center device 11 transmits data including control data to the devices 12 and 13 every elapse of a predetermined time T1. Data transmitted from the center device 11 to the devices 12 and 13 is described in a time series as data C1, data C2,..., Data Cn (where n is an arbitrary natural number). Hereinafter, data C1, data C2,..., Data Cn are collectively referred to as “data C”.

  When the devices 12 and 13 receive the data C every time T1 from the center device 11, the devices 12 and 13 transmit data including status data to the center device 11 as a response to the data C. Data transmitted from the devices 12 and 13 to the center device 11 is described in a time series as data S1, data S2,..., Data Sn (where n is an arbitrary natural number). Hereinafter, the data S1, the data S2,..., The data Sn are collectively referred to as “data S”. The data Sk (where k is an arbitrary natural number) is data transmitted from the devices 12 and 13 to the center device 11 as a response to the data Ck.

  When the center device 11 fails to receive the data S to be transmitted from the devices 12 and 13 as a response to the data C transmitted to the devices 12 and 13 for a predetermined number of times, the center device 11 is used to transmit and receive data at that time. Switch the previous communication connection. The failure to receive data S includes a case where the center apparatus 11 cannot receive the data S and a case where the data S received by the center apparatus 11 is damaged. In the example of FIG. 5 in the center device 11, when the center device 11 fails to receive the data S twice, the communication connection used for subsequent data transmission / reception is changed from the communication connection 21 to the communication connection 22, or the communication connection 22. To communication connection 21.

  Note that the condition for switching the communication connection used by the center apparatus 11 is not limited to the condition that data reception failure is repeated a predetermined number of times. For example, when the center device 11 fails to receive the data S, the data C is transmitted promptly without waiting for the time T1 to pass, and when the data S is not successfully received within a predetermined time, the center device 11 is used. The communication connection may be switched.

  In the example of FIG. 5, the center apparatus 11 has failed to receive data S4 according to the transmission of data C4, and has failed to receive data S5 according to the subsequent transmission of data C5. In this case, the center device 11 switches the communication connection to be used from the communication connection 21 used for data transmission / reception to the communication connection 22 at that time, and transmits the data C6 to the devices 12 and 13 via the communication connection 22. To do. When the devices 12 and 13 receive the data C6 from the center device 11 via the communication connection 22, the devices 12 and 13 transmit the data S6 to the center device 11 via the communication connection 22. Thereafter, the center device 11 and the devices 12 and 13 transmit and receive data C and data S via the communication connection 22.

  In the transmission / reception of data using the communication connection 22, the center device 11 switches the communication connection to be used to the communication connection 21 when the reception of the data S fails twice. Thereafter, the center device 11 and the devices 12 and 13 transmit and receive data C and data S via the communication connection 22.

  When the sequence illustrated in FIG. 5 is followed, the center apparatus 11 normally receives the data S every time T1 elapses, but there is an abnormality in either the communication using the communication connection 21 or the communication using the communication connection 22. If the data S is unsuccessfully received, the time during which the data S cannot be received is the longest time T2, which is three times the time T1. The time during which the devices 12 and 13 cannot receive the data C from the center device 11 is also the longest time T2. Therefore, by setting the time T1 so that the time T2 is shorter than the reception interval of the data S and data C required for safely operating the train 4, the communication connection 21 and the communication connection 22 are simultaneously abnormal. Unless the problem occurs, the reliability required in the exchange of information between the center apparatus 11 and the apparatuses 12 and 13 is ensured.

  The data transmission / reception sequence performed between the center apparatus 11 and the apparatuses 12 and 13 is not limited to the one illustrated in FIG. Examples of other sequences are shown below.

  FIG. 6 is a diagram showing an example of a sequence different from FIG. When the sequence illustrated in FIG. 6 is followed, the center device 11 communicates with the communication connection 21 every time T1 regardless of whether or not an abnormality has occurred in the communication via the communication connection 21 and the communication connection 22. Data C is transmitted to the devices 12 and 13 using the connections 22 alternately. That is, the center device 11 transmits data C via the communication connection 21 every time when the time T3, which is twice as long as the time T1, elapses, and the time from the transmission timing of the data C via the communication connection 21 Data C is transmitted via the communication connection 22 every time T3 elapses at a timing shifted by T1.

  The devices 12 and 13 alternately use the communication connection 21 and the communication connection 22 according to the data C transmitted from the center device 11 every time T1 passes through the communication connection 21 or the communication connection 22. Data S is transmitted to the center device 11.

  In the example of FIG. 6, a temporary abnormality occurs in the communication via the communication connection 21, and the center device 11 receives the data S corresponding to the data C5, data C7, and data C9 transmitted using the communication connection 21. It has failed. While an abnormality occurs in communication via the communication connection 21, the center apparatus 11 receives data S6 and data S8 corresponding to the data C6 and data C8 transmitted using the communication connection 22.

  Therefore, the center apparatus 11 has a time during which the data S cannot be received during the communication via the communication connection 21 is the longest time T3 which is twice as long as the time T1. Similarly, while an abnormality has occurred in the communication via the communication connection 21, the apparatus 12 and 13 cannot receive the data C for the longest time T3.

  Therefore, the communication connection 21 and the communication connection 22 are abnormal at the same time by setting the time T1 so that the time T3 is shorter than the reception interval of the data S and data C required to safely operate the train 4. Unless the problem occurs, the reliability required in the exchange of information between the center apparatus 11 and the apparatuses 12 and 13 is ensured.

  FIG. 7 is a diagram showing an example of a sequence obtained by modifying the sequence of FIG. When the sequence illustrated in FIG. 7 is followed, the center device 11 transmits data C using a communication connection in which no abnormality has occurred when an abnormality occurs in the communication via the communication connection 21 or the communication via the communication connection 22. Is changed from the normal time T3 to the time T1, which is ½ the time T3. Thereafter, when the communication in which the abnormality has occurred returns to normal, the transmission interval of the data C using the communication connection in which the abnormality has not occurred is returned from the time T1 to the normal time T3.

  In the example of FIG. 7, a temporary abnormality occurs in communication via the communication connection 21, and the data S <b> 5, data C <b> 7, and data C <b> 9 transmitted by the center device 11 using the communication connection 21 are received. It has failed. The center apparatus 11 transmits the data C9 using the communication connection 21 and the data C9 using the communication connection 22 after failing to receive the data C5 and the data C7 in the communication via the communication connection 21. . The transmission timing of the data C9 using the communication connection 22 is after the elapse of time T1 from the transmission timing of the data C8 using the communication connection 22.

  Thereafter, the center device 11 continues to transmit data C (data C11, data C13, etc.) every time T3 using the communication connection 21, and simultaneously uses the communication connection 22 to transmit data C every time T1. Transmission of (data C10, data C11, data C12, etc.) is continued.

  In the example of FIG. 7, the center apparatus 11 has successfully received the data S11 corresponding to the data C11 transmitted using the communication connection 21. In this case, the center apparatus 11 determines that the communication via the communication connection 21 has returned to normal, and then returns the transmission interval of the data C using the communication connection 22 to time T3. That is, after transmitting the data C12 using the communication connection 22, the center apparatus 11 does not transmit the data C13 when the time T1 has elapsed, but transmits the data C14 when the time T3 has elapsed.

  In the example of FIG. 7, the center device 11 cannot receive the data S until the time T3 has elapsed after an abnormality has occurred in communication via the communication connection 21, but after the occurrence of the abnormality, the center device 11 has a time twice as long as the time T3. After the elapse of time, the data S can be received every elapse of the same time T1 as usual. The devices 12 and 13 may not be able to receive the data C until the time T3 elapses after an abnormality occurs in communication via the communication connection 21, but after the occurrence of the abnormality, the time is twice the time T3. After elapses, the data C can be received every elapse of the same time T1 as usual.

  Therefore, in order to safely operate the train 4, if there is no problem even if the reception interval of the data S and the data C is temporarily doubled, there is no problem in receiving the required data S and the data C. By setting a time T1 shorter than the interval, the reliability required in the exchange of information between the center apparatus 11 and the apparatuses 12 and 13 is ensured unless an abnormality occurs simultaneously in the communication connection 21 and the communication connection 22. The

  According to the railway control system 1 described above, the exchange of information between the center apparatus 11 and the on-board apparatus 12 and the exchange of information between the center apparatus 11 and the switch 13 are performed by the general-purpose wired communication network 8 and This is performed via the mobile communication network 9. Therefore, in comparison with the railway control system that performs the exchange of information between the center device 11 and the on-board device 12 or the exchange of information between the center device 11 and the switch 13 via a dedicated communication network, Implementation at low cost is possible.

  Further, according to the railway control system 1, the center device 11 is connected to the subscriber exchange 81 of the wired communication network 8 via a communication line. Therefore, compared with a railway control system in which the center apparatus 11 is wirelessly connected to the base station 91 of the mobile communication network 9, for example, high reliability in information exchange is ensured.

[Modification]
The embodiment described above can be variously modified. Examples of these modifications are shown below. Note that the above-described embodiment and the modifications described below may be combined as appropriate.

(1) In the railway control system 1 described above, the number of communication connections used for data communication between the center device 11 and the devices 12 and 13 is two, but the number of communication connections is It may be 3 or more. FIG. 8 is a diagram illustrating a sequence when the number of communication connections used for data communication between the center apparatus 11 and the apparatuses 12 and 13 is four. In the example of FIG. 8, communication connections 21, 22, 23, and 24 are established between the center device 11 and the devices 12 and 13. For example, when an abnormality occurs in communication via the communication connection 21, the center apparatus 11 shortens the transmission interval of the data C using the communication connection 23.

(2) In the railway control system 1 described above, a plurality of communication connections used for data communication between the center device 11 and the devices 12 and 13 are all in the same wired communication network 8 and mobile communication network 9. Established. Alternatively, a plurality of communication connections used for data communication between the center device 11 and the devices 12 and 13 may be established in a combination of different wired communication networks 8 and mobile communication networks 9. FIG. 9 is a diagram illustrating a railway system 10 including the railway control system 1 according to this modification.

  The railway system 10 illustrated in FIG. 9 includes two wired communication networks 8, that is, a wired communication network 8-1 and a wired communication network 8-2. 9 includes two mobile communication networks 9, that is, a mobile communication network 9-1 and a mobile communication network 9-2. The gateway exchange 83-1 provided in the wired communication network 8-1 and the gateway exchange 94-1 provided in the mobile communication network 9-1 are connected to each other. Also, the gateway exchange 83-3 provided in the wired communication network 8-2 and the gateway exchange 94-2 provided in the mobile communication network 9-2 are connected to each other.

  The center device 11 is connected to a subscriber exchange 81-1 included in the wired communication network 8-1 via a communication line, and is connected to a subscriber exchange 81-2 included in the wired communication network 8-2 via a communication line. The The on-board device 12 and the switch 13 are each wirelessly connected to one of the base stations 91-1 included in the mobile communication network 9-1 and the base station 91-2 included in the mobile communication network 9-2. It connects with either of them by radio.

  The center device 11, the on-board device 12 or the switch 13 include one or more communication connections established in the wired communication network 8-1 and the mobile communication network 9-1, and the wired communication network 8-2 and the mobile communication network 9. A plurality of communications are performed in parallel using one or more communication connections established in -2.

(3) In the railway control system 1 described above, the data S is transmitted from the devices 12 and 13 to the center device 11 in accordance with the data C transmitted from the center device 11 to the devices 12 and 13. Instead, a configuration in which the data C is transmitted from the center device 11 to the devices 12 and 13 according to the data S transmitted from the devices 12 and 13 to the center device 11 may be employed. The center device 11 transmits data C to the devices 12 and 13 at a predetermined time interval, and the devices 12 and 13 transmit data S to the center device 11 at a predetermined time interval regardless of reception of the data C. A configuration may be employed.

(4) In addition to or instead of the switch 13 provided in the railroad control system 1, the railroad control system 1 may include a railroad safety device other than the switchboard such as a traffic light or a breaker. In this modification, the railway safety device other than the switch provided in the railway control system 1 includes a communication unit similar to the communication unit 131 included in the switch 13, and the wired communication network 8 and the mobile communication network are connected to the center device 11. 9 establishes a plurality of communication connections, and through these communication connections, the switch 13 follows the sequence similar to the sequence followed by the reception of the data C from the center device 11 and the transmission of the data S to the center device 11. I do.

(5) In the railway control system 1, a configuration may be employed in which the center device 11 or the devices 12 and 13 specify a period in which communication is not required and do not transmit and receive data during at least a part of the specified period. .

  For example, the on-board device 12 stores data indicating a section of the track 3 that does not require communication with the center device 11 in the storage unit 124, and the train 4 specified by the satellite positioning system included in the sensor group 1231. The current position is compared with the data to determine whether communication with the center device 11 is necessary. The center device 11 stores data indicating a section of the track 3 that does not require communication with the center device 11 in the storage unit 113, and status data included in the data S transmitted from the on-board device 12. The current position of the train 4 indicated by is checked against the data to determine whether communication with the on-board device 12 is necessary.

  When the on-board device 12 and the center device 11 each determine that the train 4 has entered a section that does not require communication, the on-vehicle device 12 and the center device 11 disconnect the communication connection established with the counterpart device. Thereafter, if the on-board device 12 and the center device 11 each determine that the train 4 has entered a section that requires communication, the on-board device 12 and the center device 11 establish a communication connection with the partner device and resume communication. According to such a configuration, for example, while the train 4 travels outside the service area of the mobile communication network 9, the inconvenience of the center device 11 and the onboard device 12 trying to communicate wastefully is avoided.

  Further, for example, the switch 13 stores data indicating the operation schedule of the train 4 in the storage unit 124, and determines whether communication with the center apparatus 11 is necessary by comparing the current time with the data. Moreover, the center apparatus 11 has memorize | stored the data which show the operation schedule of the train 4 in the memory | storage part 113, and determines the necessity of communication with the switch 13 in reference to the said data. When it is determined that the switch 13 and the center device 11 have entered a time zone in which communication is not required, the switch 13 and the center device 11 disconnect the communication connection established with the counterpart device. Thereafter, when the switch 13 and the center device 11 each determine that they have entered a time zone that requires communication, they establish a communication connection with the counterpart device and resume communication. According to such a configuration, for example, in the time zone other than the time zone before and after the train 4 passes through the branch point of the line 3 where the branching device 5 corresponding to the switching device 13 is arranged, the center device 11 and the switching device 13 During this period, unnecessary communication is not performed, and communication network congestion and communication charges associated with unnecessary communication are avoided.

DESCRIPTION OF SYMBOLS 1 ... Railway control system, 3 ... Track, 4 ... Train, 5 ... Branch device, 6 ... Data communication apparatus, 7 ... Data communication apparatus, 8 ... Wired communication network, 9 ... Mobile communication network, 10 ... Railway system, 11 DESCRIPTION OF SYMBOLS: Center apparatus, 12: On-board apparatus, 13 ... Switch, 21 ... Communication connection, 22 ... Communication connection, 81 ... Subscriber exchange, 82 ... Relay exchange, 83 ... Gateway exchange, 91 ... Base station, 92 ... Subscriber exchange, 93 ... Relay exchange, 94 ... Gateway exchange, 111 ... Communication unit, 112 ... Data processing unit, 113 ... Storage unit, 121 ... Communication unit, 122 ... Data processing unit, 123 ... Device group, 124 ... storage unit, 131 ... communication unit, 132 ... drive control unit, 133 ... actuator, 134 ... storage unit, 1111 ... reception unit, 1112 ... transmission unit, 1211 ... reception unit, 1212 ... transmission unit, 1231 ... sensor group, 1232 …Speed control Location, 1233 ... display device, 1311 ... receiver, 1312 ... the transmission unit

Claims (5)

And Rousset centers apparatus is connected via the subscriber switching station to a wired communication network having a subscriber switching station,
Base station and the mobile communication network via the relevant base station and the subscriber switching station and a railway security equipment and the onboard system is connected and a subscriber switching station,
The train protection apparatus and the center apparatus, and the center apparatus and on the vehicle device, the communication via the wired with interconnected by the wire the communication network of the gateway switching center the mobile communication network gateway switching center Do railway control system. The center apparatus and the railway security equipment performs in parallel a plurality of communications over a plurality of communication connections, performed in parallel a plurality of communication via the center apparatus and on the wheel device communication connection multiple The railway control system according to claim 1. The center device and the railway security device transmit and receive data at different timings at the same time interval between a plurality of communication connections, and the center device and the on-board device differ at a same time interval between a plurality of communication connections. The railway control system according to claim 2, wherein data is transmitted and received at a timing. When the center device and the railway security device detect an abnormality in communication in any of a plurality of communication connections, the time interval of data transmission / reception in the communication connection in which no abnormality is detected is shortened, and the center device and the on-board device railway control system according to claim 3 to reduce the time interval between transmission and reception of data in the detection result abnormality is detected such have communications connection abnormality to have Zurekani definitive communications multiple communication connections. The center device and the railway security device, and the center device and the on-board device specify a period in which communication is not necessary, and do not transmit and receive data during at least a part of the specified period. Railway control system given in any 1 paragraph.

Images