JP2018014805A - Train radio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology enabling reduction in burden on crews and suppression of human errors in setting change.SOLUTION: In a train radio system, when a detection unit detects the connection between two vehicles, two on-vehicle stations of first to fourth on-vehicle stations installed on the two vehicles whose connection is detected are automatically set into a rest state, and remaining two on-vehicle stations are automatically set to an active-system and spare-system on-vehicle stations, and when the detection unit does not detect the connection between the two vehicles, the first and second on-vehicle stations are automatically set to the active-system and spare-system on-vehicle stations, and the third and fourth on-vehicle stations are automatically set to the active-system and spare-system on-vehicle stations.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a train radio system in which an on-board station capable of wireless communication with a ground device is made redundant.

  In the train radio system, safety of train operation and operation work are performed by communicating emergency calls, train control signals, train status information, etc. between the ground equipment that gives commands and the on-board stations installed in the train. We are trying to improve efficiency. In recent years, as in the techniques disclosed in Patent Document 1 and Non-Patent Document 1, a configuration in which an on-board station is made redundant, that is, a duplex configuration including an active on-board station and a standby on-board station is used. As a result, the reliability of the system may be improved.

Japanese Patent Laid-Open No. 60-83451

Digital Train Radio System Common Specification, 1.0, 1st volume, Kanto Railway Company Association, p. 1-19

  In train transportation, there are cases where trains are merged or divided for convenience of operation of vehicles constituting the train and the balance of transportation personnel. Here, when one train with redundant onboard stations and another train with redundant onboard stations are merged to form one merged train, two active systems are combined into one merged train. There are two onboard stations and two onboard stations.

  In such a case, at present, the crew member manually stops the onboard station of the intermediate vehicle for reasons such as reducing the monitoring of the device, and at the same time, removes the onboard station of the leading vehicle and the last vehicle included in one merged train. Manually set as the on-board station for the active and standby systems. The same setting is made manually by the crew when splitting the merged train.

  However, the above-described work for changing the setting of the onboard station requires a crew member to reciprocate from the first vehicle to the last vehicle, and takes a relatively long time. For this reason, the above work is a burden on the crew in a situation where the train operation is overcrowded. There is also a possibility that a human setting change error may occur.

  Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to provide a technique capable of reducing the burden on a crew member and suppressing human setting change mistakes.

  A train radio system according to the present invention includes a first onboard station that is mounted on a first vehicle that is one of a leading vehicle and a tail vehicle included in a first train and that can perform wireless communication with a ground device; A second on-board station capable of wireless communication with the ground device, mounted on a second vehicle that is the other of the first vehicle and the last vehicle included in one train, and a second vehicle that can be merged and divided with the first train. A third on-board station capable of wireless communication with the ground device, mounted on a third vehicle that is one of a leading vehicle and a last vehicle included in two trains, and a leading vehicle and a last vehicle included in the second train When the fourth on-board station, which is mounted on the fourth vehicle that is the other of the tail vehicles and capable of wireless communication with the ground device, and the first train and the second train are merged, the first to A detecting unit for detecting the connection between any two of the fourth vehicles; Obtain. When the detection unit detects the connection between two vehicles, the first to fourth on-board stations use the first through line of the first train and the second through line of the second train. The two onboard stations mounted on the two vehicles whose connection is detected by the detection unit among the first to fourth onboard stations are automatically set to the dormant state by performing communication via And one of the remaining two onboard stations among the first to fourth onboard stations is automatically set as an active onboard station that performs radio communication with the ground device, and the other is a standby station. It is automatically set to the on-board station of the system. When the detection unit does not detect the connection between two vehicles, the first and second on-board stations communicate with each other via the first lead-in line, thereby One of the second onboard stations is automatically set as a working onboard station that performs wireless communication with the ground device, the other is automatically set as a standby onboard station, and the third and The onboard station of the working system in which one of the third and fourth onboard stations communicates wirelessly with the ground device by the fourth onboard station communicating via the second lead-through line The other is automatically set as a standby station on the standby system.

  According to the present invention, the in-vehicle on-board station, the active on-board station, and the standby on-board station are automatically set based on the detection result of the detection unit. Thereby, while being able to reduce the burden of a crew member, it is possible to suppress human setting change mistakes.

It is a block diagram which shows the structure of a related train radio system. 1 is a block diagram illustrating a configuration of a train radio system according to Embodiment 1. FIG. 4 is a block diagram for explaining the operation of the train radio system according to Embodiment 1. FIG. It is a figure for demonstrating the detection of the detection part of the train radio system which concerns on Embodiment 1. FIG. 4 is a block diagram for explaining the operation of the train radio system according to Embodiment 1. FIG. 6 is a block diagram for explaining an operation of a train radio system according to Embodiment 2. FIG.

<Embodiment 1>
First, before describing the train radio system according to Embodiment 1 of the present invention, a related train radio system that is a train radio system related to the train radio system will be described.

  FIG. 1 is a block diagram illustrating a configuration of a related train radio system. In FIG. 1 and the subsequent drawings, only the first vehicle and the last vehicle among the plurality of vehicles included in the train are shown for the sake of simplicity.

  The related train radio system of FIG. 1 includes a ground device 20 that is a ground station, and first and second on-board stations 1a and 1b. The first and second on-board stations 1a and 1b can perform radio communication with the ground device 20 via the radio line 21 and the on-board antennas 3a and 3b, respectively.

  The controller 2a connected to the first onboard station 1a accepts various operations from the crew, for example, button operations for notifying the ground device 20 of an emergency, and displays various information to the crew. The first on-board station 1a transmits the contents of various operations received by the operating device 2a to the ground device 20 and outputs various information received from the ground device 20 to the operating device 2a for display by the operating device 2a. Or The second on-board station 1b and the operation device 2b are configured in the same manner as the first on-board station 1a and the operation device 2a.

  The first and second on-board stations 1a and 1b described above are mounted on a train including a plurality of vehicles. The first onboard station 1a and the controller 2a are mounted on the first vehicle 11a, which is one of the leading vehicle and the last vehicle, so that the crew can use or manage the first and second onboard stations 1a and 1b. The second vehicle upper station 1b and the operation device 2b are mounted on the second vehicle 11b which is the other of the leading vehicle and the tailing vehicle.

  The first and second on-board stations 1a and 1b receive the traveling direction of the train from the ground device 20 by performing wireless communication with the ground device 20. When the first and second onboard stations 1a and 1b receive the upward direction indicated by the arrow 26 in FIG. 1 as the traveling direction, the first and second onboard stations 1a and 1b The first vehicle 11a is set as the leading vehicle, and the second vehicle 11b opposite to the arrow 26 is set as the last vehicle. On the other hand, when the first and second on-board stations 1a and 1b receive the direction opposite to the arrow 26 in FIG. 1 as the traveling direction, the first and second on-board stations 1a and 1b One vehicle 11a is set as the last vehicle, and the second vehicle 11b is set as the leading vehicle. This setting is realized by a CPU (Central Processing Unit) (not shown) provided in the first and second onboard stations 1a and 1b executing a program according to a predetermined algorithm.

  In the following, as an example, the train consists of 10 vehicles, the first vehicle 11a on which the first onboard station 1a is mounted is the leading vehicle and the first vehicle, and the second vehicle on which the second onboard station 1b is mounted. 11b is described as being the last vehicle and the No. 10 vehicle.

  Here, as shown in FIG. 1, the first and second on-board stations 1a and 1b are connected via a lead-in line 4 such as a wire so as to be capable of bidirectional communication. Then, the first on-board station 1a transmits the contents of the operation received by the operation device 2a to the second on-vehicle station 1b via the lead-through line 4, and the second on-board station 1b is transmitted by the operation device 2b. The contents of the accepted operation are transmitted to the first on-board station 1a via the lead-through line 4. In this way, the first and second on-board stations 1a and 1b can share information with each other.

  For this reason, even if a crew member operates any of operation devices 2a and 2b, both first and second on-board stations 1a and 1b can transmit the contents of the operation to ground device 20. Yes. However, in order not to perform wireless communication more than necessary, one of the first and second onboard stations 1a and 1b is set as an active onboard station that performs wireless communication with the ground device 20. At the same time, the other is set as a standby on-board station. Thus, in the related train radio system, a redundant control method in which the onboard station is made redundant is realized.

  Here, when two trains shown in FIG. 1 are prepared and merged to form one merged train, two merged train stations and two standby systems are combined into one merged train. There will be an on-board station.

  In such a case, at present, the crew member manually stops the onboard station of the intermediate vehicle for reasons such as reducing the monitoring of the apparatus, and at the same time, the onboard station of the leading vehicle and the last vehicle included in one merged train Are manually set as the on-board station of the active system and the standby system, respectively. The same setting is made manually by the crew when splitting the merged train.

  However, the above-described work for changing the setting of the onboard station is a burden on the crew in a situation where the train operation is overcrowded. There is also a possibility that a human setting change error may occur. On the other hand, in the train radio system according to the first embodiment described below, it is possible to solve these problems.

  FIG. 2 is a block diagram showing a configuration of the train radio system according to the first embodiment. Hereinafter, among the components described in the train radio system according to the first embodiment, the same or similar components as those in the related train radio system are denoted by the same reference numerals, and different contents will be mainly described.

  The train radio system of FIG. 2 includes a ground device 20 and first and second onboard stations 1a and 1b.

  The first on-board station 1a includes a control unit 8a including an on-board antenna 3a, a radio unit 5a, an I / O unit 6a, a detection unit 7a, and a CPU (Central Processing Unit) that comprehensively controls them. Including. The controller 8a and the operation device 2a are connected to each other. The operation device 2a converts the received operation content into an electrical signal and notifies the control unit 8a, and the control unit 8a performs, for example, call processing and control processing with the ground device 20 in accordance with the notified operation content. As a result, various communication service processes are performed.

  The on-board antenna 3a receives a control signal transmitted from the ground device 20 via the wireless line 21 or the like, and the wireless unit 5a converts the control signal received by the on-board antenna 3a into an electric signal to control the control unit 8a. Output to. The radio unit 5a converts the electrical signal output from the control unit 8a into a radio signal and outputs the radio signal to the on-board antenna 3a. The radio signal is output as a spatial wave from the on-board antenna 3a. Is received by the ground device 20 via

  As described above, the control unit 8a of the first on-board station 1a can perform wireless communication with the ground device 20 via the wireless line 21 and the on-board antenna 3a. Thereby, like the related train radio system, the first on-board station 1a transmits the contents of various operations received by the operation device 2a to the ground device 20, and receives various information received from the ground device 20 as the operation device 2a. It is possible to output to.

  The second on-board station 1b is configured in the same manner as the first on-board station 1a. Briefly describing the second on-board station 1b, the second on-board station 1b controls the on-board antenna 3b, the radio unit 5b, the I / O unit 6b, the detection unit 7b, and these in an integrated manner. The control part 8b is included, and it is connected with the operation device 2b. The second on-board station 1b can perform wireless communication with the ground device 20 via the wireless line 21 and the on-board antenna 3b.

  The first vehicle upper station 1a and the operation device 2a are mounted on the first vehicle 11a which is one of the leading vehicle and the last vehicle included in the first train 101, and the second vehicle upper station 1b and the operation device 2b are The second vehicle 11b, which is the other of the first vehicle and the last vehicle included in the first train 101, is mounted. In addition, the train radio system according to the first embodiment is also based on the traveling direction of the first train 101 instructed from the ground device 20 in the same manner as the related continuous radio system. The vehicle shall be set.

  In the following, as an example, the first train 101 is composed of 10 vehicles, the first vehicle 11a on which the first onboard station 1a is mounted is the leading vehicle and the first vehicle, and the second onboard station 1b is mounted. The second vehicle 11b will be described as being the last vehicle and No. 10 vehicle. However, the number of vehicles constituting the first train 101 is not limited to ten as long as it is plural.

  The control unit 8a of the first onboard station 1a and the control unit 8b of the second onboard station 1b are bidirectional via the I / O unit 6a, the first lead-through line 41, and the I / O unit 6b. Is communicably connected. Note that, for example, a high level data link control procedure (HDLC) method is used for bidirectional communication in the first lead-through line 41, and frame signals of the communication method are input / output in the I / O units 6a and 6b. The

  According to such a configuration, similarly to the related continuous radio system, even if the crew operates any of the operating devices 2a and 2b, both the first and second on-board stations 1a and 1b are the contents of the operation. Can be transmitted to the ground device 20. For this reason, one of the first and second onboard stations 1a and 1b can be set as a working onboard station, and the other can be set as a standby onboard station.

<Consolidation of trains>
FIG. 3 is a block diagram for explaining the operation of the train radio system according to the first embodiment. Specifically, FIG. 3 shows a state in which a first train 101 and a second train 102 that is configured in the same manner and that can be merged and divided can be merged. In the example of FIG. 3, the merged train 103 is formed by merging the first train 101 and the second train 102.

  The train radio system according to the first embodiment includes third and fourth onboard stations 1c and 1d mounted on the second train 102. The configuration of the third and fourth onboard stations 1c and 1d is the same as the configuration of the first and second onboard stations 1a and 1b.

  The third on-board station 1c will be briefly described. The third on-board station 1c controls the on-board antenna 3c, the radio unit 5c, the I / O unit 6c, and the detection unit 7c in an integrated manner. The control part 8c is included and it is connected with the operation device 2c. The third on-board station 1c can perform wireless communication with the ground device 20 via the wireless line 21 and the on-board antenna 3c.

  The fourth on-board station 1d will be briefly described. The fourth on-board station 1d has an on-board antenna 3d, a radio unit 5d, an I / O unit 6d, and a detection unit 7d, and comprehensively controls them. And a controller 8d that is connected to the controller 2d. The fourth onboard station 1d can perform wireless communication with the ground device 20 via the wireless line 21 and the onboard antenna 3d.

  The third vehicle upper station 1c and the operation device 2c are mounted on the third vehicle 11c, which is one of the leading vehicle and the last vehicle included in the second train 102, and the fourth vehicle upper station 1d and the operation device 2d are The second vehicle 102 is mounted on a fourth vehicle 11d that is the other of the leading vehicle and the tailing vehicle. The third and fourth onboard stations 1c and 1d are also based on the traveling direction of the second train 102 instructed from the ground device 20 in the same manner as the first and second onboard stations 1a and 1b. It is assumed that the first vehicle and the last vehicle of the train 102 are set.

  In the following, as an example, the second train 102 consists of 10 vehicles, the third vehicle 11c on which the third vehicle upper station 1c is mounted is the leading vehicle and the first vehicle, and the fourth vehicle upper station 1d is mounted. The fourth vehicle 11d will be described as being the last vehicle and the tenth vehicle. However, the number of vehicles constituting the second train 102 is not limited to ten as long as it is plural.

  Similar to the first and second onboard stations 1a and 1b, the control unit 8c of the third onboard station 1c and the control unit 8d of the fourth onboard station 1d include the I / O unit 6c and the second lead-through. The line 42 and the I / O unit 6d are connected so as to be capable of bidirectional communication. Therefore, one of the third and fourth on-board stations 1c and 1d can be set as a working on-board station, and the other can be set as a standby on-board station.

  Next, the detection units 7a to 7d will be described. One end of the detection line 10a connected to the detection line 10a is disposed in the connecting portion 9a of the first vehicle 11a. Similarly, one ends of the detection lines 10b to 10d connected to the detection units 7b to 7d are disposed in the connection portions 9b to 9d of the second to fourth vehicles 11b to 11d, respectively. Below, the detection by the detection parts 7a-7d in case the 2nd vehicle 11b and the 3rd vehicle 11c are connected like FIG. 3 is demonstrated.

  FIG. 4 is a diagram illustrating in detail the configuration of the detection units 7b and 7c, the coupling units 9b and 9c, and the detection lines 10b and 10c. The configurations of the detection units 7a and 7d are the same as the configurations of the detection units 7b and 7c described below.

  The detection unit 7b of the second vehicle 11b includes a power source 12b, a voltage detection unit 13b, and a ground 14b provided in the second vehicle 11b, and the detection unit 7c of the third vehicle 11c is a power source provided in the third vehicle 11c. 12c, voltage detector 13c and ground 14c.

  As shown by the dotted line in FIG. 4, when the second vehicle 11b and the third vehicle 11c are connected by the connecting portions 9b and 9c, the detection line 10b of the second vehicle 11b and the detection line of the third vehicle 11c. 10c is coupled. By this connection, the voltage detection unit 13b of the second vehicle 11b is connected to the power supply 12c and the ground 14c of the third vehicle 11c via the connection units 9b and 9c, and the voltage detection unit 13c of the third vehicle 11c is connected to It is connected to the power supply 12b and the ground 14b of the second vehicle 11b via the parts 9b and 9c.

  For this reason, when the 2nd vehicle 11b and the 3rd vehicle 11c connect, the voltage detection parts 13b and 13c of the 2nd and 3rd vehicles 11b and 11c detect the voltage from the power supplies 12b and 12c. And the voltage detection part of the 4th vehicles 11a and 11d does not detect the voltage from a power supply. On the other hand, when the connection between the connecting portion 9b of the second vehicle 11b and the connecting portion 9c of the third vehicle 11c is released, the portion indicated by the dotted line in FIG. 4 is separated, so the first to fourth vehicles 11a. None of the voltage detectors ˜11d detect the voltage from the power source. Therefore, in the first embodiment, when two voltage detection units among the voltage detection units of the first to fourth vehicles 11a to 11d detect the voltage from the power source, the detection units 7a to 7d It is comprised so that it may determine with the two vehicles provided with the voltage detection part having connected.

  The detection units 7a to 7d according to the first embodiment configured as described above are based on the detection results of the voltages in the voltage detection units of the first to fourth vehicles 11a to 11d, respectively. It is possible to detect the connection between any two of the vehicles 11a to 11d. For this reason, when the 1st train 101 and the 2nd train 102 merge, the detection parts 7a-7d detect the connection of any two vehicles among the 1st thru | or 4th vehicles 11a-11d. Is possible.

  However, the configuration of the detection units 7a to 7d is not limited to the above, and for example, a configuration other than the circuit configuration of FIG. 4 may be used. In the configuration of FIG. 4, the detection lines 10b and 10c are arranged so as to incline upward or downward toward the connecting portions 9b and 9c. However, the present invention is not limited to this, and the detection lines 10b and 10c are not limited thereto. May be arranged so as to incline uniformly on either the left side or the right side toward the connecting portions 9b, 9c. In this case, for example, it is possible to prevent the voltage detection units from being connected to each other.

  Returning to FIG. 3, when the first train 101 and the second train 102 are merged, the detection lines 10b and 10c and the like are connected to each other via the connecting portions 9b and 9c and the first lead-through line 41 and The second lead-through line 42 is connected to each other via the connecting portions 9b and 9c. Therefore, the first to fourth on-board stations 1a to 1d can communicate via the first and second lead-through lines 41 and 42. As a result, any one of the first to fourth onboard stations 1a to 1d can be set as a working onboard station, and another one can be set as a standby onboard station. .

  Here, when the detection units 7b and 7c detect the connection of the second and third vehicles 11b and 11c, the first to fourth onboard stations 1a to 1d connect the first and second lead-through lines 41 and 42, respectively. By communicating via the communication, the merger of the first and second trains 101 and 102 and the connection of the second and third vehicles 11b and 11c are recognized. Then, the second and third on-board stations 1b and 1c mounted on the second and third vehicles 11b and 11c whose connection is detected by the detection units 7a to 7d are automatically set to a resting state. As a result, it is possible to prevent the second and third on-board stations 1b and 1c from using more power than necessary, so that power saving can be expected.

  In addition, the first to fourth onboard stations 1a to 1d perform the above-described communication and recognition, so that the remaining first and fourth onboard stations 1a mounted on the leading vehicle and the last vehicle of the combined train 103, One of 1d is automatically set to the active onboard station, and the other is automatically set to the standby onboard station.

  At this time, in the first embodiment, the setting of the on-board station of the active system and the standby system is performed in the same manner as the setting of the leading vehicle and the last vehicle. Specifically, based on the traveling direction of the merged train 103 transmitted from the ground device 20, that is, the traveling direction of the first and second trains 101 and 102, the remaining first and fourth onboard stations 1a and 1d From among them, the onboard station for the active system and the onboard station for the standby system are determined.

  For example, it is assumed that the first and fourth on-board stations 1a and 1d receive the upward direction indicated by the arrow 26 in FIG. 4 as the traveling direction. In this case, the first vehicle 11a is set as the leading vehicle, and the first onboard station 1a mounted on the first vehicle 11a is determined and set as the active onboard station. The fourth vehicle 11d is set as the last vehicle, and the fourth onboard station 1d mounted on the fourth vehicle 11d is determined and set as a standby onboard station.

  Note that the above-described setting and determination of the onboard station are realized by the control units 8a to 8d of the first to fourth onboard stations 1a to 1d executing programs according to a predetermined algorithm.

<Division of train>
FIG. 5 is a block diagram for explaining the operation of the train radio system according to the first embodiment. Specifically, FIG. 5 shows a state where the first train 101 and the second train 102 are divided.

  When the merged train 103 is divided into the first train 101 and the second train 102, the first lead line 41 and the second lead line 42 are separated from each other. Further, since the detection lines 10b, 10c and the like are also separated from each other, the detection units 7a to 7d do not detect the connection between the two vehicles. When the detection units 7a to 7d do not detect the connection between the two vehicles, the first to fourth onboard stations 1a to 1d recognize that the first and second trains 101 and 102 are not merged. To do.

  Thereafter, the first and second on-board stations 1a and 1b communicate with each other via the first lead-through line 41, so that one of the first and second on-board stations 1a and 1b is an active on-board station. The other is automatically set as a standby station on the standby system. At this time, based on the traveling direction of the first train 101 transmitted from the ground device 20, the active onboard station and the standby onboard station are selected from the first and second onboard stations 1 a and 1 b. decide.

  Similarly, the third and fourth on-board stations 1c and 1d communicate with each other via the second lead-through line 42, so that one of the third and fourth on-board stations 1c and 1d is on the working vehicle. The station is automatically set, and the other is automatically set as a standby onboard station. At this time, based on the traveling direction of the second train 102 transmitted from the ground device 20, the active onboard station and the standby onboard station are selected from the third and fourth onboard stations 1 c and 1 d. decide.

  Note that the above-described setting and determination of the onboard station are realized by the control units 8a to 8d of the first to fourth onboard stations 1a to 1d executing programs according to a predetermined algorithm.

<Summary of Embodiment 1>
According to the train radio system according to the first embodiment as described above, based on the detection results of the detection units 7a to 7d, the on-board station in the dormant state, the on-board station on the active system, and the standby system vehicle Automatically set the upper station. Thereby, while being able to reduce a burden of a crew member, generation | occurrence | production of a human setting change mistake can be suppressed. Moreover, the configuration of the train radio system according to the first embodiment can be realized only by making a relatively simple change from the conventional configuration.

  In the configuration described above, based on the detection results of the detection units 7a to 7d and the transmission direction of the train transmitted from the ground device 20, the resting state, the on-board station of the active system, and the standby system Although the on-board station was set automatically, it is not limited to this. For example, when an instruction to merge and divide trains can be received from the ground device 20, at least one of a suspended onboard station, an active onboard station, and a standby onboard station The instruction may be reflected in one automatic setting.

<Embodiment 2>
FIG. 6 is a block diagram for explaining the operation of the train radio system according to the second embodiment of the present invention. Hereinafter, among the constituent elements described in the second embodiment, the same or similar constituent elements as those in the first embodiment are denoted by the same reference numerals, and different constituent elements will be mainly described.

  When trains are merged in the above-described configuration, two onboard stations are set in a dormant state, so that the device resources used for actual operation are one onboard station on the active system and one onboard station on the standby system And two on-board stations. In the second embodiment, when the active on-board station and the standby on-board station are out of order in such a state, two inactive states are used instead of the faulty on-board station. It is configured to use an on-board station.

  FIG. 6 shows that when the trains are merged, the first and second onboard stations 1a and 1b set in the working and working onboard stations in the first embodiment fail simultaneously. An example is shown. In the example of FIG. 6, similarly to the example of FIG. 4, the two vehicles whose connection is detected by the detection units 7 a to 7 d are the second and third on-board stations 1 b and 1 c. In this case, in the first embodiment, the second and third on-board stations 1b and 1c are suspended, and the first and fourth on-board stations 1a and 1d are put into operation.

  Here, in the second embodiment, when the detection units 7a to 7d detect the connection between the second and third vehicles 11b and 11c, both the first and fourth onboard stations 1a and 1d have failed. If there is, the second and third on-board stations 1b and 1c in the suspended state are used instead of the failed first and fourth on-board stations 1a and 1d. That is, one of the second and third onboard stations 1b and 1c is automatically set as the active onboard station, and the other is automatically set as the standby onboard station. Here, it is assumed that the second onboard station 1b on the leading side is set as the active onboard station, and the third onboard station 1c on the rear side is set as the standby onboard station. The reverse may be possible. The failed first and fourth on-board stations 1a and 1d are set in a dormant state.

  The operation content received by the operating device 2a of the first vehicle 11a on which the crew member is on and the operation content received by the operating device 2d of the fourth vehicle 11d on which another crew member is boarding are the first and second Notification is made to the second and third onboard stations 1b and 1c, which are the onboard stations of the active system and the standby system, via the lead-through lines 41 and 42. Then, the second on-board station 1b, which has become the active on-board station, transmits the notified content to the ground device 20, whereby the communication service is developed.

  According to the train radio system according to the second embodiment as described above, in the case where the trains are merged, even if the onboard station to be used for operation breaks down, the onboard station in the dormant state is replaced instead. Can be used. By effectively utilizing the device resources in this way, it is possible to prevent the communication service from being stopped due to a failure, so that the reliability of the train radio system can be improved.

  In addition, although the case where both the 1st and 4th on-board station 1a, 1d which should be used for operation failed was demonstrated above, it is not restricted to this. For example, when any one of the first and fourth on-board stations 1a and 1d to be used for operation is out of order, it is suspended instead of the one on-board station that has failed. Any one of the second and third on-board stations 1b and 1c in the state may be used. In this case as well, the reliability of the train radio system can be improved as described above.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  1a to 1d 1st to 4th on-board station, 7a to 7d detector, 9a to 9d connecting portion, 11a to 11d 1st to 4th vehicle, 12b and 12c power supply, 13b and 13c voltage detector, 41 first pull Through line, 42 2nd lead line, 101 1st train, 102 2nd train, 103 merged train.

Claims (5)

A first on-board station that is mounted on a first vehicle that is one of a leading vehicle and a trailing vehicle included in the first train and capable of wireless communication with a ground device;
A second on-board station that is mounted on a second vehicle that is the other of the first vehicle and the last vehicle included in the first train and capable of wireless communication with the ground device;
A third on-board station capable of wireless communication with the ground device, mounted on a third vehicle that is one of a leading vehicle and a trailing vehicle included in a second train that can be merged and divided with the first train;
A fourth on-board station that is mounted on a fourth vehicle that is the other of the first vehicle and the last vehicle included in the second train and capable of wireless communication with the ground device;
When the first train and the second train are merged, a detection unit that detects connection between any two of the first to fourth vehicles, and
When the detection unit detects the connection between two vehicles,
The first to fourth vehicles communicate with each other via the first train line of the first train and the second train line of the second train, thereby the first to fourth vehicles. Of the upper stations, two on-board stations mounted on two vehicles whose connection has been detected by the detection unit are automatically set to a rest state, and the remaining one of the first to fourth on-board stations One of the two on-board stations is automatically set as a working on-board station that performs radio communication with the ground device, and the other is automatically set as a standby on-board station,
When the detection unit does not detect the connection between two vehicles,
The working system in which one of the first and second on-board stations communicates with the ground device by the first and second on-board stations communicating via the first lead-through line. Automatically set to the onboard station of the other, the other is automatically set to the standby station of the standby system,
The working system in which one of the third and fourth on-board stations communicates with the ground device by the third and fourth on-board stations communicating via the second lead-through line. The train radio system is automatically set to the on-board station of the vehicle and the other is automatically set to the standby on-board station. The train radio system according to claim 1,
When the detection unit detects the connection between two vehicles,
Based on the traveling directions of the first and second trains transmitted from the ground device, the working onboard station and the standby onboard station are selected from the remaining two onboard stations. Decide
When the detection unit does not detect the connection between two vehicles,
Based on the traveling direction of the first train transmitted from the ground device, the working onboard station and the standby onboard station are determined from the first and second onboard stations. ,And,
Based on the traveling direction of the second train transmitted from the ground device, the working onboard station and the standby onboard station are determined from the third and fourth onboard stations. , Train radio system. The train radio system according to claim 1 or 2,
The detector is
Including a power source and a voltage detector provided in each of the first to fourth vehicles,
When any two of the first to fourth vehicles are connected to each other, the power source and the voltage detection unit of one of the two vehicles, the voltage detection unit of the other vehicle, and The power source is connected to each of the two vehicles via a connecting portion,
The detector is
A train radio system that detects connection between any two of the first to fourth vehicles based on a voltage detection result in each of the voltage detection units of the first to fourth vehicles. . The train radio system according to any one of claims 1 to 3,
In the case where the detection unit detects the connection between two vehicles,
If any one of the remaining two onboard stations fails, instead of the one onboard station that has failed, the two onboard stations in the dormant state Train radio system using any one of them. The train radio system according to any one of claims 1 to 4,
In the case where the detection unit detects the connection between two vehicles,
When both of the remaining two on-board stations have failed, the train radio system uses the two on-board stations in a suspended state instead of the remaining two on-board stations that have failed.

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