Support system, support device, and support method

Abstract

To provide a technology capable of supporting crew members of a railway vehicle in taking measures against abnormalities or signs of abnormalities in doors of the railway vehicle.SOLUTION: A support system SYS includes a diagnosis unit 1002 that acquires information on a diagnosis result regarding an abnormality in a door 80 of a railway vehicle 1, and a vehicle-side information notification unit 22 that notifies crew members of the railway vehicle 1 of information on measures to be taken in response to an abnormality or a sign of an abnormality regarding the door 80 when the information on the diagnosis result indicates the abnormality or the sign of the abnormality regarding the door 80.SELECTED DRAWING: Figure 17

Description

Technical Field

[0001] The present disclosure relates to a support system and the like.

Background Art

[0002] For example, techniques for diagnosing abnormalities related to the doors of railway vehicles and detecting abnormalities and signs thereof are known (see Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, for example, when an abnormality or a sign thereof related to the door is detected during the commercial operation of a railway vehicle, it is desirable that the abnormality or the sign thereof be handled by crew members such as the driver or the conductor of the railway vehicle.

[0005] Therefore, in view of the above problems, an object of the present disclosure is to provide a technology capable of assisting crew members of railway vehicles in handling abnormalities and signs thereof related to the doors of railway vehicles.

Means for Solving the Problems

[0006] To achieve the above object, in one embodiment of the present disclosure, a diagnostic information acquisition unit that acquires information regarding a diagnosis result of an abnormality related to a door of a railway vehicle; a first notification unit that notifies a crew member of the railway vehicle of information regarding a measure against the abnormality or a sign thereof related to the door when the information regarding the diagnosis result indicates that there is an abnormality or a sign thereof related to the door of the railway vehicle. A support system is provided.

[0007] In addition, in other embodiments of the present disclosure, a support device mounted on a railway vehicle, a diagnostic information acquisition unit that acquires information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; a notification unit that notifies a crew member of the railway vehicle of information regarding a measure against the abnormality or its sign related to the door when the information regarding the diagnosis result indicates that there is an abnormality or its sign related to the door of the railway vehicle, A support device is provided.

[0008] In still other embodiments of the present disclosure, a support method executed by a support system, a diagnostic information acquisition step of acquiring information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; a notification step of notifying a crew member of the railway vehicle of information regarding a measure against the abnormality or its sign related to the door when the information regarding the diagnosis result indicates that there is an abnormality or its sign related to the door of the railway vehicle, A support method is provided.

Advantages of the Invention

[0009] According to the above-described embodiments, it is possible to support a crew member of a railway vehicle in taking measures against an abnormality or its sign related to a door of the railway vehicle.

Brief Description of the Drawings

[0010]

Figure 1

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Modes for Carrying Out the Invention

[0011] Hereinafter, embodiments will be described with reference to the drawings.

[0012] [Configuration related to door opening and closing operation] With reference to FIGS. 1 to 8, an example of the configuration related to the opening and closing operation of the door 80 of the railway vehicle 1 will be described.

[0013] FIG. 1 is a block diagram showing an example of the configuration related to the opening and closing operation of the door 80 of the railway vehicle 1. FIGS. 2 to 6 are schematic views showing a first example of the arrangement structure of the door 80 and the door drive mechanism 200 of the railway vehicle 1. Specifically, FIG. 2 is a schematic view showing a first example of the door 80 and the door drive mechanism 200 in the fully closed and locked state of the door 80. FIG. 3 is a schematic view showing a first example of the door 80 and the door drive mechanism 200 in the fully closed and unlocked state. FIG. 4 is a schematic view showing a first example of the door 80 and the door drive mechanism 200 during the opening operation (immediately after the start of the opening operation) or during the closing operation (immediately before the completion of the closing operation). FIG. 5 is a schematic view showing a first example of the door 80 and the door drive mechanism 200 during the opening operation (immediately before the completion of the opening operation) or during the closing operation (immediately after the start of the closing operation). FIG. 6 is a schematic view showing a first example of the door 80 and the door drive mechanism 200 in the fully open state. FIG. 7 is a schematic view showing a second example of the arrangement structure of the door 80 and the door drive mechanism 200 of the railway vehicle 1. Specifically, FIG. 7 is a schematic view showing a second example of the door 80 and the door drive mechanism 200 in the fully closed and locked state of the door 80. FIG. 8 is a view showing an example of the push-back mechanism PBM.

[0014] The railway vehicle 1 may be a single-car formation composed of one vehicle, or may be a multi-car formation in which a plurality of vehicles are connected in series.

[0015] As shown in FIGS. 1 to 7, the railway vehicle 1 includes a host device 10, a motor 30, an encoder 31, a current sensor 32, a locking device 50, a DCS (Door Close Switch) 60, a DLS (Door Lock Switch) 70, and a door 80. The railway vehicle 1 also includes a door control device 100, a power supply 150, an input contactor 151, and a door drive mechanism 200.

[0016] The upper device 10 includes a vehicle control device 12, a door opening / closing operation device 14, and a transmission device 16.

[0017] The vehicle control device 12 controls the operation of the railway vehicle 1. For example, when the railway vehicle 1 is composed of a plurality of cars, the vehicle control device 12 is provided one each in the driver's cab of the leading vehicle and the conductor's cab of the trailing vehicle. Also, for example, when the railway vehicle is a single-car formation, the vehicle control device 12 is provided one each in the driver's cab and the conductor's cab at the front end and the rear end of the railway vehicle 1 (the vehicle).

[0018] The functions of the vehicle control device 12 are realized by arbitrary hardware or an arbitrary combination of hardware and software, etc. The vehicle control device 12 is mainly configured by a computer including, for example, a CPU (Central Processing Unit), a memory device, an auxiliary storage device, and an interface device for input / output with the outside. The memory device is, for example, SRAM (Static Random Access Memory). The auxiliary storage device is, for example, EEPROM (Electrically Erasable Programmable Read Only Memory) or flash memory. The interface device includes, for example, a communication interface for connecting to a communication line inside the railway vehicle 1 or a communication line outside the railway vehicle 1. Also, the interface device may include an external interface for connecting to an external recording medium. Thereby, for example, in the manufacturing process, an operator can install a program and various data used for processing related to the control of the operation of the railway vehicle 1 from an external recording medium into the auxiliary storage device, etc. of the vehicle control device 12. Also, a program and various data used for processing related to the control of the operation of the railway vehicle 1 may be downloaded from outside the railway vehicle 1 through the communication interface. Also, the interface device may include a plurality of different types of interface devices according to the type of the communication line to be connected.

[0019] When the railway vehicle 1 is stopped at a station or the like, the vehicle control device 12 outputs a stop signal indicating that it is in a stopped state to the door control device 100. Further, the vehicle control device 12 outputs, to the door control device 100, an open command instructing an opening operation of the door 80 or a close command instructing a closing operation of the door 80, which are input from the door opening / closing operation device 14.

[0020] The vehicle control device 12 is connected to a wiring 13 for transmitting an interlock signal. Both ends of the wiring 13 are connected to the vehicle control device 12, and the DCS60 and DLS70 are provided on the wiring 13. When at least one of the DCS60 and DLS70 is in an off state, the wiring 13 is in a non-conductive state. In this case, the interlock signal input to the vehicle control device 12 becomes an L (Low) level. On the other hand, when both the DCS60 and DLS70 are in an on state, the wiring 13 is in a conductive state. In this case, the interlock signal input to the vehicle control device 12 becomes an H (High) level. The vehicle control device 12 determines that the railway vehicle 1 is in a drivable state when the interlock signal is at the H level. Therefore, when the interlock signal shifts from the L level to the H level, the railway vehicle 1 becomes drivable.

[0021] The door opening / closing operation device 14 is used for an operator (e.g., a conductor) of the railway vehicle 1 to perform an opening / closing operation of the door 80. The door opening / closing operation device 14 includes an open switch 14A and a close switch 14B. For example, when the open switch 14A is operated while the railway vehicle 1 is stopped, the door opening / closing operation device 14 outputs an open command that rises from the L level to the H level to the vehicle control device 12. Further, for example, when the close switch 14B is operated while the railway vehicle 1 is stopped, the door opening / closing operation device 14 outputs a close command that falls from the H level to the L level to the vehicle control device 12.

[0022] The transmission device 16 relays signals between the vehicle control device 12 and the door control device 100 for each of the plurality of doors 80 of the railway vehicle 1.

[0023] Specifically, the transmission device 16 may receive various signals transmitted from the vehicle control device 12 to the door control device 100 and transmit them to some or all of the target door control devices 100 (input signal SDR). Further, the transmission device 16 may receive various signals (output signal SD) transmitted from each door control device 100 to the vehicle control device 12 and transmit them to the vehicle control device 12.

[0024] The motor 30 drives the door 80 to open and close. The motor 30 is, for example, a rotating machine driven by three-phase alternating current driving power. The motor 30 may be a linear motor driven by three-phase alternating current driving power. Further, the motor 30 may be a direct current motor driven by direct current.

[0025] The encoder 31 detects the rotational position and displacement position of the motor 30. For example, when the motor 30 is a rotating machine, the encoder 31 detects the rotational position (rotation angle) of the rotation shaft of the motor 30. The encoder 31 detects, for example, the rotational position (rotation angle) and the number of rotations during one rotation of the rotation shaft of the motor 30. The encoder 31 outputs a detection signal including information regarding the rotational position of the rotation shaft of the motor 30, and the detection signal is taken into the door control device 100. Thereby, the door control device 100 can acquire position information in the opening and closing direction of the door 80 based on the signal of the encoder 31. That is, the information included in the signal of the encoder 31 corresponds to the position information of the door 80.

[0026] Note that the door control device 100 may acquire the position information of the door 80 from other information instead of or in addition to the encoder 31. For example, when sensorless control of the motor 30 is performed, the door control device 100 acquires the position information of the door 80 based on an estimated value of the rotational position of the motor 30 generated during the control of the motor 30. Further, the door control device 100 may acquire the position information of the door 80 based on the output of a distance sensor capable of directly measuring the position of the door 80 or the like. In these cases, the encoder 31 may be omitted.

[0027] The current sensor 32 detects the current of the three-phase alternating current drive power supplied from the door control device 100 to the motor 30. The current sensor 32 includes current sensors 32A and 32B that detect the current of two of the three power lines of the U-phase, V-phase, and W-phase that connect between the door control device 100 and the motor 30. For example, the current sensor 32A detects the current of the U-phase power line, and the current sensor 32B detects the current of the W-phase power line. Further, the current sensor 32 may include a current sensor that detects the current of the remaining one power line. For example, as shown in FIG. 1, the current sensor 32 may be built in the door control device 100 or provided outside the door control device 100. The detection signals of the current sensor 32 (current sensors 32A and 32B) are taken into the normal control unit 110 and the standby control unit 120 described later.

[0028] The locking device 50 locks and unlocks the door 80. The locking device 50 includes, for example, a pin 51 and coils 52 and 53, and is realized by a bi-directional self-holding solenoid. The coils 52 and 53 are each connected to the door control device 100.

[0029] When the coil 52 of the locking device 50 is energized by the door control device 100, the pin 51 protrudes from the housing of the locking device 50. As a result, a lock pin 230 described later moves in the unlocking direction, and the door 80 is unlocked. Further, since the locking device 50 is self-holding, it maintains the state of protruding from its housing even after the energization of the coil 52 is released. Thereby, the unlocked state of the door 80 can be maintained.

[0030] When the coil 53 of the locking device 50 is energized by the door control device 100, the pin 51 is drawn into the housing of the locking device 50. As a result, a lock pin 230 described later moves in the locking direction, and the door 80 is locked. Further, since the locking device 50 is self-holding, it maintains the state of being drawn into its housing even after the energization of the coil 53 is released. Thereby, the locked state of the door 80 can be maintained.

[0031] DCS60 detects the opening and closing state of the door 80 of the railway vehicle 1. Specifically, DCS60 detects the fully closed state in which the door 80 of the railway vehicle 1 is completely closed. DCS60 is realized, for example, by a limit switch pressed by the action of the door 80 when the door 80 moves to the fully closed position.

[0032] DCS60 includes fixed contacts 61A1, 61A2, fixed contacts 61B1, 61B2, and a movable contact 62.

[0033] The fixed contacts 61A1, 61A2 are arranged in series with the wiring 13 in a manner that disconnects the wiring 13. Hereinafter, the fixed contacts 61A1, 61A2 may be conveniently referred to as the "A contacts" of DCS60.

[0034] The fixed contacts 61B1, 61B2 are arranged in series with the wiring 101 in a manner that disconnects the wiring 101 whose both ends are connected to the door control device 100. Thereby, the door control device 100 can grasp the on / off state of DCS60 by the H-level signal and the L-level signal indicating the conduction state and the non-conduction state of the fixed contacts 61B1, 61B2, respectively. Hereinafter, the fixed contacts 61B1, 61B2 may be conveniently referred to as the "B contacts" of DCS60.

[0035] The movable contact 62 conducts either the A contacts (fixed contacts 61A1, 61A2) or the B contacts (fixed contacts 61B1, 61B2) of DCS60 by moving along the axial direction (the vertical direction in FIG. 1). In a state where no external force acts on DCS60, the movable contact 62 is in a state of conducting the B contacts, that is, the B contacts are on and the A contacts are off. On the other hand, as will be described later, when the movable contact 62 is pressed by the action of the door 80, the A contacts are turned on in a state where the A contacts are conducted by the movable contact 62, and the B contacts are turned off. Then, when the movable contact 62 returns to a state where it is not pressed by the action of the door 80, the B contacts are turned on in a state where the B contacts are conducted by the movable contact 62, and the A contacts return to a state where they are off.

[0036] For example, the door control device 100 can grasp the on / off state of the B contact of the DCS60 based on the signal input through the wiring 101. Also, for example, the door control device 100 can grasp the on / off state of the A contact of the DCS60 by inverting the signal input through the wiring 101.

[0037] The DLS70 detects the presence or absence of locking of the door 80. Specifically, it detects the locked state of the door 80. The DLS70 is realized, for example, by a limit switch pressed by the action of the lock pin 230 when the lock pin 230 of the door 80 moves to the locked position.

[0038] The DLS70 includes fixed contacts 71A1, 71A2, fixed contacts 71B1, 71B2, and a movable contact 72.

[0039] The fixed contacts 71A1, 71A2 are arranged in series with the wiring 13 in a manner that disconnects the wiring 13. Hereinafter, the fixed contacts 71A1, 71A2 may be conveniently referred to as the "A contacts" of the DLS70.

[0040] The fixed contacts 71B1, 71B2 are arranged in series with the wiring 102 in a manner that disconnects the wiring 102 whose both ends are connected to the door control device 100. Thereby, the door control device 100 can grasp the on / off state of the DLS70 by the H-level signal and the L-level signal indicating the conductive state and the non-conductive state of the fixed contacts 71B1, 71B2, respectively. Hereinafter, the fixed contacts 71B1, 71B2 may be conveniently referred to as the "B contacts" of the DLS70.

[0041] The movable contact 72 conducts either one of the A contacts (fixed contacts 71A1, 71A2) and B contacts (fixed contacts 71B1, 71B2) of the DLS 70 by moving along the axial direction (the vertical direction in FIG. 1). In a state where no external force acts on the DLS 70, the movable contact 72 conducts the B contacts, that is, the B contacts are turned on and the A contacts are turned off. On the other hand, when the movable contact 72 is pressed by the action of the lock pin 230, the A contacts of the DLS 70 are turned on and the B contacts are turned off. Then, when the movable contact 72 returns to a state where it is not pressed by the action of the lock pin 230, the B contacts are turned on and the A contacts are turned off.

[0042] For example, the door control device 100 can grasp the on / off state of the B contacts of the DLS 70 based on the signal input through the wiring 102. Also, for example, the door control device 100 can grasp the on / off state of the A contacts of the DLS 70 by inverting the signal input through the wiring 102.

[0043] When the door 80 is fully closed and locked, and both the A contacts of the DCS 60 and the A contacts of the DLS 70 are turned on, the wiring 13 becomes conductive and the interlock signal becomes the H level.

[0044] The door 80 is a double-opening sliding door provided at the openings on the left and right sides of the body of the railway vehicle 1 (hereinafter referred to as "door openings"). The door 80 includes door panels 80A and 80B.

[0045] The door panels 80A and 80B perform the opening and closing operations of the door 80 (door opening of the body) via the door drive mechanism 200 by the power of the motor 30. Specifically, the door panels 80A and 80B can close and open the door opening of the body by performing symmetric operations in the front-rear direction with the center of the front-rear direction of the door opening of the body as the center.

[0046] When the door 80 is in the fully closed state, door edge rubbers 81A and 81B are provided at the portions where the door panels 80A and 80B abut against each other, respectively. The door edge rubbers 81A and 81B are provided in the range extending from the upper end to the lower end at the joint portions of the door panels 80A and 80B, respectively.

[0047] The door control device 100 performs control related to the opening and closing operation of the door 80. The door control device 100 is provided for each of the plurality of doors 80 provided in the railway vehicle 1.

[0048] The functions of the door control device 100 are realized by arbitrary hardware, or an arbitrary combination of hardware and software, etc. The door control device 100 is mainly configured by a computer including, for example, a CPU, a memory device, an auxiliary storage device, and an interface device for input / output with the outside. The memory device is, for example, SRAM. The auxiliary storage device is, for example, EEPROM or flash memory. The interface device includes, for example, a communication interface for connecting to the communication line inside the railway vehicle 1. Further, the interface device may include an external interface for connecting to an external recording medium. Thereby, for example, in the manufacturing process, an operator can install a program and various data used for the process related to the control of the door 80 from an external recording medium to the auxiliary storage device etc. of the door control device 100. Also, a program and various data used for the process related to the control of the door 80 may be downloaded from the upper device 10 through the communication interface. Further, the interface device may include a plurality of different types of interface devices according to the type of the communication line to be connected.

[0049] The door control device 100 includes a normal control unit 110, a standby control unit 120, a switching circuit unit 130, and a switching circuit unit 140.

[0050] The normal control unit 110 controls the opening and closing operations of the door 80. The normal control unit 110 includes a power supply circuit 111, a communication unit 112, an input signal detection unit 113, a sequence unit 114, a motor control unit 115, a motor drive unit 116, and a locking / unlocking drive unit 117.

[0051] The power supply circuit 111 functions as a drive power supply for various devices of the normal control unit 110. Using the power of a relatively high voltage (e.g., 100V) supplied from the power supply 150 to the door control device 100, the power supply circuit 111 generates the power of a relatively low voltage (e.g., 5V (volts) or less) for driving the devices of the normal control unit 110.

[0052] The communication unit 112 performs two-way communication with the transmission device 16 outside the door control device 100.

[0053] The input signal detection unit 113 detects various signals input from outside the door control device 100.

[0054] Also, the input signal detection unit 113 may perform various processes based on the detected signals.

[0055] For example, when the input signal detection unit 113 detects a predetermined signal from the input signals, it sends the predetermined signal to the sequence unit 114 or the motor control unit 115. That is, the input signal detection unit 113 extracts (selects) the signals necessary for the control of the sequence unit 114 or the motor control unit 115 from among the plurality of types of input signals, and sends them to the sequence unit 114 or the motor control unit 115. Thereby, the sequence unit 114 and the motor control unit 115 can appropriately execute the sequence control and the drive control of the motor 30 described later based on the signals input from the input signal detection unit 113.

[0056] Based on the signal input from the input signal detection unit 113, the sequence unit 114 performs sequence control related to the opening and closing operation of the door 80. Specifically, the sequence unit 114 performs sequence control related to the opening and closing operation of the door 80 according to the stop signal, opening command, closing command, etc. from the vehicle control device 12. Also, the sequence unit 114 uses signals such as the encoder 31, DCS60, and DLS70 to perform sequence control related to the opening and closing operation of the door 80 while grasping the opening and closing state of the door 80, the position in the opening and closing direction of the door 80, the presence or absence of door locking of the door 80, etc.

[0057] Based on the control command related to the opening and closing operation of the door 80 from the sequence unit 114, the motor control unit 115 performs drive control of the motor 30 so as to realize the opening and closing operation of the door 80 corresponding to the control command. The motor control unit 115 generates, for example, a PWM (Pulse Width Modulation) signal for driving the motor 30 based on the speed command and thrust command of the motor 30 input from the sequence unit 114, and outputs it to the motor drive unit 116. Specifically, the motor control unit 115 may use detection signals such as the encoder 31 and current sensor 32 input from the input signal detection unit 113 to generate a PWM signal that conforms to the speed command and thrust command while grasping the current of the motor 30 and the rotational position of the rotating shaft, etc.

[0058] Using the DC power input from the power supply 150, the motor drive unit 116 generates and outputs three-phase AC power for driving the motor 30. The motor drive unit 116 includes, for example, an inverter circuit that converts DC into three-phase AC of a predetermined voltage and a predetermined frequency. The two DC power lines on the input side of the motor drive unit 116 are connected to the power supply 150 through the input contactor 151, and the three power lines on the output side are connected to the motor 30 through the switching circuit unit 130.

[0059] The locking and unlocking drive unit 117 energizes the coils 52 and 53 of the locking device 50 in accordance with a locking command or an unlocking command input from the sequence unit 114, and drives the locking device 50 (pin 51) in the locking direction or the unlocking direction of the door 80. The positive and negative DC power lines on the input side of the locking and unlocking drive unit 117 are connected to the power supply 150 through the input contactor 151. And one set of the positive and negative DC power lines on the output side of the locking and unlocking drive unit 117 is connected to the coil 52 through the switching circuit unit 140, and the other set is connected to the coil 53 through the switching circuit unit 140. For example, the locking and unlocking drive unit 117 has semiconductor switches capable of switching conduction and non-conduction between the DC power line on the input side and each of one set of DC power lines and the other set of DC power lines on the output side, and switches the on and off of the semiconductor switches. Specifically, when an unlocking command is input from the sequence unit 114, the locking and unlocking drive unit 117 may shift to a conducting state between the DC power line on the input side and one set of DC power lines on the output side, and energize the coil 52 of the locking device 50 through the switching circuit unit 140. Also, when a locking command is input from the sequence unit 114, the locking and unlocking drive unit 117 may shift to a conducting state between the DC power line on the input side and the other set of DC power lines, and energize the coil 53 of the locking device 50 through the switching circuit unit 140.

[0060] The standby system control unit 120 is configured to be able to execute control related to the opening and closing operation of the door 80, and serves as a backup function for the normal system control unit 110. Thereby, in addition to the normal system control unit 110, the door control device 100 is provided with the standby system control unit 120, so that the control system related to the opening and closing operation of the door 80 can be made redundant. Specifically, when an abnormality occurs in the normal system control unit 110, the standby system control unit 120 performs control related to the opening and closing operation of the door 80 in place of the normal system control unit 110.

[0061] The standby system control unit 120 includes the same components as the normal system control unit 110. Specifically, the standby system control unit 120 includes a power supply circuit 121, a communication unit 122, an input signal detection unit 123, a sequence unit 124, a motor control unit 125, a motor drive unit 126, and a locking / unlocking drive unit 127.

[0062] The power supply circuit 121 has the same hardware configuration and functions as the power supply circuit 111 of the normal system control unit 110. Also, the communication unit 122 has the same hardware configuration and functions as the communication unit 112 of the normal system control unit 110. Also, the input signal detection unit 123 has the same hardware configuration and functions as the input signal detection unit 113 of the normal system control unit 110. Also, the sequence unit 124 has the same hardware configuration and functions as the sequence unit 114 of the normal system control unit 110. Also, the motor control unit 125 has the same hardware configuration and functions as the motor control unit 115 of the normal system control unit 110. Also, the motor drive unit 126 has the same hardware configuration and functions as the motor drive unit 116 of the normal system control unit 110. Also, the locking / unlocking drive unit 127 has the same hardware configuration and functions as the locking / unlocking drive unit 117 of the normal system control unit 110. Therefore, detailed descriptions are omitted.

[0063] The switching circuit unit 130 switches between a state in which the motor drive unit 116 and the motor 30 are electrically connected and a state in which the motor drive unit 126 and the motor 30 are electrically connected. Specifically, on the input side of the switching circuit unit 130, the three-phase AC output power lines of the motor drive unit 116 and the motor drive unit 126 are respectively connected, and on the output side, the three-phase AC input power line extending from the motor 30 is connected. Then, the switching circuit unit 130 switches between a state in which the output power line of the motor drive unit 116 and the input power line of the motor 30 are electrically connected and a state in which the output power line of the motor drive unit 126 and the input power line of the motor 30 are electrically connected.

[0064] When the switching circuit unit 130 maintains the state of electrically connecting the motor drive unit 116 and the motor 30 when the normal control unit 110 controls the opening and closing operation of the door 80. On the other hand, when an abnormality occurs in the normal control unit 110 and the standby control unit 120 shifts to the state of controlling the opening and closing operation of the door 80, the switching circuit unit 130 switches to the state of electrically connecting the motor drive unit 126 and the motor 30.

[0065] The switching circuit unit 140 switches between the state of connecting the locking / unlocking drive unit 117 and the locking device 50 (coils 52, 53) and the state of connecting the locking / unlocking drive unit 127 and the locking device 50 (coils 52, 53). Specifically, on the input side of the switching circuit unit 140, two sets of output power lines of the locking / unlocking drive unit 117 and the locking / unlocking drive unit 127 are respectively connected, and on the output side, two sets of input power lines extending from the locking device 50 (coils 52, 53) are connected. Then, the switching circuit unit 140 switches between the state of connecting between the two sets of output power lines of the locking / unlocking drive unit 117 and the two sets of input power lines of the locking device 50 and the state of connecting between the two sets of output power lines of the locking / unlocking drive unit 127 and the two sets of input power lines of the locking device 50.

[0066] When the switching circuit unit 140 maintains the state of electrically connecting the locking / unlocking drive unit 117 and the locking device 50 (coils 52, 53) when the normal control unit 110 controls the opening and closing operation of the door 80. On the other hand, when an abnormality occurs in the normal control unit 110 and the standby control unit 120 shifts to the state of controlling the opening and closing operation of the door 80, the switching circuit unit 140 switches to the state of electrically connecting the locking / unlocking drive unit 127 and the locking device 50 (coils 52, 53).

[0067] The power supply 150 supplies DC power at a predetermined voltage (e.g., 100 volts) to various devices of the railway vehicle 1, including the motor 30, the locking device 50, and the door control device 100. The power supply 150 includes, for example, a battery and an auxiliary power supply device. The battery supplies DC power to various devices of the railway vehicle 1 when the pantograph of the railway vehicle 1 is not connected to the overhead line. The auxiliary power supply device generates DC power based on the power supplied from the overhead line through the pantograph when the pantograph of the railway vehicle 1 is connected to the overhead line, and supplies the DC power to various devices of the railway vehicle 1.

[0068] The input contactor 151 is provided in the power circuit between the power supply 150 and various devices including the door control device 100, and switches the on / off of the power supply to various devices of the railway vehicle 1 by opening and closing the power circuit. The input contactor 151 is closed, for example, in response to a predetermined operation corresponding to turning on the power in the driver's cab of the railway vehicle 1. Thereby, the power supply to various devices of the railway vehicle 1 including the door control device 100 is started, and the railway vehicle 1 starts. Also, the input contactor 151 is opened, for example, in response to a predetermined operation corresponding to turning off the power in the driver's cab of the railway vehicle 1. Thereby, the power supply to various devices of the railway vehicle 1 including the door control device 100 is stopped (cut off), and the railway vehicle 1 stops.

[0069] The door drive mechanism 200 transmits the power of the motor 30 to the door 80 to cause the door 80 to open and close. Also, the door drive mechanism 200 realizes the locked state and the unlocked state of the door 80 in accordance with the operation of the locking device 50 (pin 51).

[0070] The door drive mechanism 200 includes racks 210, 220 and a lock pin 230.

[0071] The rack 210 is attached to the upper end of the door panel 80A. The rack 210 includes a rack portion 211 and a connecting portion 212.

[0072] The rack portion 211 is a member extending in the longitudinal direction of the railway vehicle 1. A rack gear 211A is provided on the lower surface of the rack portion 211. The rack portion 211 is disposed slightly above the rotation axis of the motor 30 whose rotation axis is along the width direction (left - right direction) of the railway vehicle 1 above the door opening of the railway vehicle 1 (the vehicle body). Thereby, the pinion gear arranged coaxially with the rotation axis of the motor 30 can be engaged with the rack gear 211A on the lower surface of the rack portion 211. Therefore, the rack portion 211 can be moved in the longitudinal direction of the railway vehicle 1 in accordance with the rotation of the motor 30.

[0073] The connecting portion 212 connects the door panel 80A and the rack portion 211. The connecting portion 212 is provided so as to extend upward from the upper end portion of the door panel 80A, and the rack portion 211 is connected to the upper end portion thereof. Thereby, the door panel 80A can move in the longitudinal direction of the railway vehicle 1 in conjunction with the movement of the rack portion 211 in accordance with the rotation of the motor 30, and the opening and closing operation of the door 80 can be realized. At this time, the movement of the door panel 80A in the longitudinal direction is guided by a slide rail (hereinafter referred to as "door rail").

[0074] A DCS contact portion 213 is provided on the connecting portion 212.

[0075] As shown in FIGS. 2 and 3, when the door panels 80A and 80B shift to the fully - closed state where they are completely closed, the DCS contact portion 213 contacts the movable contact 62 of the DCS 60, and the movable contact 62 is pressed. Thereby, the movable contact is pushed in and the DCS 60 is turned on. On the other hand, as shown in FIGS. 4 - 6, when the door panel 80A shifts to a state other than the fully - closed state where it is completely closed, the DCS contact portion 213 shifts to a state where it does not contact the movable contact 62 of the DCS 60, and the DCS 60 is turned off.

[0076] The rack 220 is attached to the upper end of the door panel 80B. As shown in FIGS. 2 to 6, the rack 220 includes a rack portion 221, a connecting portion 222, and a lock pin abutting portion 223. Further, as shown in FIG. 7, the rack 220 may include a spring member 224 and a support rod 225. Hereinafter, as shown in FIG. 8, the mechanism portion including the spring member 224 and the support rod 225 is collectively referred to as a push-back mechanism PBM.

[0077] The rack portion 221 is a member extending in the longitudinal direction of the railway vehicle 1. A rack gear 221A is provided on the upper surface of the rack portion 221. The rack portion 221 is disposed slightly below the rotation axis of the motor 30 above the door opening of the railway vehicle 1. Thereby, the pinion gear arranged coaxially with the rotation axis of the motor 30 can be engaged with the rack gear 211A on the upper surface of the rack portion 221. Therefore, the rack portion 221 can be moved in the longitudinal direction of the railway vehicle 1 in accordance with the rotation of the motor 30.

[0078] The connecting portion 222 connects the door panel 80B and the rack portion 221. The connecting portion 222 is provided so as to extend upward from the upper end of the door panel 80B, and the rack portion 221 is connected to the upper end thereof. Thereby, the door panel 80B can move in the longitudinal direction of the railway vehicle 1 in conjunction with the movement of the rack portion 221 in accordance with the rotation of the motor 30, and the opening and closing operations of the door 80 can be realized. At this time, the door panel 80B is guided in the longitudinal direction by a slide rail (door rail).

[0079] Here, the rack gear 211A engages with the pinion gear coaxial with the motor 30 from above, and the rack gear 221A engages with the pinion gear from below. Accordingly, the racks 210 and 220 can be moved in opposite directions in accordance with the rotation of the motor 30. Therefore, the opening and closing operations of the two door panels 80A and 80B can be realized by one motor 30.

[0080] An inclined portion 222A that slopes downward toward the center side of the door opening in the longitudinal direction of the railway vehicle 1 is provided at the upper end of the connecting portion 222.

[0081] The lock pin abutting portion 223 is abutted by the lock pin 230 when the door 80 is in the locked state. The lock pin abutting portion 223 is provided so as to protrude in a direction opposite to the extending direction of the rack portion 221 with respect to the connecting portion 222. Specifically, the lock pin abutting portion 223 is provided so as to protrude in the opening direction of the door panel 80B when viewed from the connecting portion. A lock hole 223A is provided in the lock pin abutting portion 223.

[0082] As shown in FIGS. 7 and 8, when the push-back mechanism PBM is provided, the lock pin abutting portion 223 is provided separately from the rack portion 221 and the connecting portion 222. In this case, the lock pin abutting portion 223 is provided so as to be adjacent to the opening direction of the door panel 80B when viewed from the rack portion 221 and the connecting portion 222, and is connected to the rack portion 221 and the connecting portion 222 via the push-back mechanism PBM.

[0083] The lock hole 223A is a recess provided on the upper surface of the lock pin abutting portion 223. When the door 80 is locked, the lower end of the lock pin 230 (pin portion 231 described later) is inserted into the lock hole 223A.

[0084] The spring member 224 is disposed so as to abut on both the upper part of the connecting portion 222 and the lock pin abutting portion 223. Specifically, the spring member 224 is adjacent to the upper part of the connecting portion 222 in the opening direction of the door panel 80B and adjacent to the lock pin abutting portion 223 in the closing direction of the door panel 80B. The spring member 224 is an elastic body that can expand and contract in the front-rear direction (the opening and closing direction of the door panel 80B), and is, for example, a coil spring. The spring member 224 is in a state where the support rod 225 is inserted through the central axis portion in the shape of a coil spring. Thereby, the position of the spring member 224 is restricted so as to expand and contract along the support rod 225. By the action of the support rod 225, the distance between the connecting portion 222 and the lock pin abutting portion 223 is variable between zero and a predetermined value Dmax, and when the distance between the connecting portion 222 and the lock pin abutting portion 223 is in the state of the predetermined value Dmax, the spring member 224 is in a state of being contracted more than its natural length. Thereby, the distance between the connecting portion 222 and the lock pin abutting portion 223 is maintained to be the predetermined value Dmax by the elastic force (reaction force) of the spring member 224.

[0085] In addition, the spring member 224 may be replaced with another type of elastic member that can expand and contract when an external force in the opening direction acts on the door 80 in the locked state.

[0086] The elastic force of the spring member 224 is set to an elastic force such that when the door 80 is closed and the lower end of the pin portion 231 is inserted into the lock hole 223A with a foreign object caught between the door edge rubbers 81A and 81B, the passenger can relatively easily pull out the foreign object. Thereby, even when a foreign object is caught between the door 80 (between the door edge rubbers 81A and 81B), the passenger can pull out the foreign object by moving the door panel 80B in the opening direction against the reaction force of the spring member 224. At this time, in the locked state of the door 80, the passenger can move the door panel 80B in the opening direction until the distance between the above-described connecting portion 222 and the lock pin abutting portion 223 becomes substantially zero.

[0087] The support rod 225 connects between the upper part of the connecting part 222 and the lock pin contact part 223 in the front-rear direction (the opening and closing direction of the door 80). The support rod 225 has a rod part 225A and a diameter-expanded part 225B.

[0088] The base end of the rod part 225A in the front-rear direction is fixed to the connecting part 222, and the tip end is connected to the diameter-expanded part 225B. The rod part 225A has a circular cross-section and is inserted into a through-hole that penetrates the central axis of the spring member 224 and the lock pin contact part 223 in the front-rear direction.

[0089] The diameter-expanded part 225B is provided at the tip end of the rod part 225A and is exposed outside the through-hole of the lock pin contact part 223. The diameter-expanded part 225B has a substantially disc shape with an outer diameter larger than the outer diameter of the rod part 225A and the inner diameter of the through-hole of the lock pin contact part 223. Thereby, the diameter-expanded part 225B functions as a stopper, and the door panel 80B connected to the connecting part 222 can move in the front-rear direction within a range between a predetermined value Dmax and substantially zero for the distance between the connecting part 222 and the lock pin contact part 223. Therefore, as described above, the passenger can move the door panel 80B in the opening direction against the reaction force of the spring member 224 and pull out the foreign object.

[0090] In addition, as long as the push-back mechanism PBM is configured such that the elastic member can expand and contract according to the thrust acting from the door drive mechanism 200 to the door 80 in the locked state of the door 80, it may have a configuration and structure different from the above.

[0091] The lock pin 230 is provided above the lock pin contact part 223 of the rack 220. The lock pin 230 includes a pin part 231 and a locking device contact part 232.

[0092] The pin part 231 is provided so as to extend in the vertical direction.

[0093] The locking device contact portion 232 is attached to the upper end portion of the pin portion 231, and is provided so as to extend horizontally from the connecting portion with the pin portion 231, specifically, in the direction opposite to the door opening in the longitudinal direction of the railway vehicle 1. Below the locking device contact portion 232, the locking device 50 is fixedly arranged, and the upper end portion of the pin 51 of the locking device 50 is in contact with the lower surface of the locking device contact portion 232. Thus, when the pin 51 of the locking device 50 protrudes upward, the locking device contact portion 232 is lifted upward, and when the pin 51 of the locking device 50 is retracted downward, the locking device contact portion 232 descends downward by the weight of the lock pin 230.

[0094] As shown in FIGS. 3 to 6, in a state where the pin 51 of the locking device 50 protrudes, the lower end of the pin portion 231 connected to the locking device contact portion 232 is located above the inclined portion 222A of the rack 220, and the pin portion 231 does not engage with the lock hole 223A. Therefore, since the rack 220 can move without being affected by the arrangement of the lock pin 230, the door 80 (door panels 80A, 80B) is in a state where it can move in the opening and closing direction.

[0095] On the other hand, as shown in FIG. 2, in a state where the pin 51 of the locking device 50 is retracted, the lower end of the pin portion 231 is located below the inclined portion 222A of the rack 220. Also, in the fully closed state of the door 80, the pin portion 231 is located on the side of the lock pin contact portion 223 rather than the inclined portion 222A in the longitudinal direction of the railway vehicle 1. Therefore, when the pin 51 of the locking device 50 is retracted in the fully closed state of the door 80, the locking device contact portion 232 moves downward, and the pin portion 231 engages with the lock hole 223A (recess) of the rack 220. As a result, the movement of the rack 220 is restricted, and the rotation of the pinion gear engaged with the rack gear of the rack 220 is restricted. Consequently, the movement of the rack 210 having the rack gear 211A engaged with the pinion gear is restricted. Therefore, the movement of the door panels 80A, 80B connected to the racks 210, 220 is restricted, and the locked state of the door panels 80A, 80B is realized.

[0096] Hereinafter, as shown in FIG. 2, the mechanism that realizes the locked state of the door 80 including the lock pin contact portion 223 and the lock pin 230 is comprehensively referred to as the locking mechanism portion LCM. Further, as shown in FIG. 7, when the push-back mechanism PBM is provided, the locking mechanism portion LCM includes the push-back mechanism PBM (the spring member 224 and the support rod 225).

[0097] [Position relationship between DCS and DCS contact portion] Next, with reference to FIGS. 9 to 12, the change in the position relationship between the DCS 60 and the DCS contact portion 213 during the closing operation and the opening operation of the door 80 will be described.

[0098] FIG. 9 is a diagram showing a first example of the position relationship between the DCS 60 and the DCS contact portion 213. FIG. 10 is a diagram showing a second example of the position relationship between the DCS 60 and the DCS contact portion 213. FIG. 11 is a diagram showing a third example of the position relationship between the DCS 60 and the DCS contact portion 213. FIG. 12 is a diagram showing a fourth example of the position relationship between the DCS 60 and the DCS contact portion 213. Specifically, FIGS. 9 to 12 are diagrams showing the position relationship between the DCS 60 and the DCS contact portion 213 during the closing operation or the opening operation of the door 80 in a time series.

[0099] As shown in FIGS. 9 to 12, the DCS contact portion 213 includes a main body portion 213A, a contact portion 213B, a connection portion 213C, a spring portion 213D, and a mounting portion 213E.

[0100] The main body portion 213A holds the contact portion 213B at the tip via the connection portion 213C so as to be movable within a predetermined range in the longitudinal direction of the railway vehicle 1 or the opening and closing direction of the door 80. The opening and closing direction of the door 80 is determined by the inclination with respect to the longitudinal direction of the door rail. When the door rail is attached in parallel to the longitudinal direction, the opening and closing direction of the door 80 coincides with the longitudinal direction of the railway vehicle 1.

[0101] The contact portion 213B is a portion that contacts the movable contact 62 of the DCS 60 in the fully closed state of the door 80. The contact portion 213B is disposed between the main body portion 213A and the DCS 60 (movable contact 62) in the longitudinal direction of the railway vehicle 1 or the opening and closing direction of the door 80.

[0102] The connecting portion 213C is provided so as to extend from the abutting portion 213B toward the main body portion 213A in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80, and its tip is inserted into the main body portion 213A. Thereby, the main body portion 213A can hold the tip of the connecting portion 213C therein and guide it so as to be movable within a predetermined range in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80. The predetermined range is defined such that, for example, in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80, the maximum value of the distance between the abutting portion 213B and the main body portion 213A is shorter than the natural length of the spring portion 213D, and the minimum value thereof is equal to or greater than the minimum length of the spring portion 213D.

[0103] The spring portion 213D is wound around the connecting portion 213C and disposed between the main body portion 213A and the abutting portion 213B. Thereby, in combination with the function of the main body portion 213A, the distance between the abutting portion 213B and the main body portion 213A in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80 can be maintained at a predetermined value shorter than the natural length of the spring portion 213D in a state where the abutting portion 213B and the DCS60 are not in contact.

[0104] The mounting portion 213E is provided on the main body portion 213A and is used to mount the DCS abutting portion 213 on the door 80 side (connecting portion 212). For example, the mounting portion 213E is provided with a long hole extending in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80 and penetrating in the left-right direction. Then, by screwing two bolts BLT into the corresponding screw holes (female screws) of the connecting portion 212 in a spaced-apart manner in the longitudinal direction through the long hole, the DCS abutting portion 213 is fixed to the connecting portion 212. Thereby, for example, in the manufacturing process, an operator can adjust the mounting position of the DCS abutting portion 213 in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80 within a range defined by the length of the long hole and the mounting span of the two bolts BLT.

[0105] When the door 80 is closing, the positional relationship between the DCS 60 and the DCS contact portion 213 usually changes in the order of FIGS. 9, 10, and 11. Further, when the door 80 continues to close from the state of FIG. 11, it may reach the state of FIG. 12.

[0106] FIG. 9 shows the positional relationship between the DCS 60 and the DCS contact portion 213 at the timing when the contact portion 213B contacts the tip of the movable contact 62 of the DCS 60 during the closing operation of the door 80. FIG. 10 shows the positional relationship between the DCS 60 and the DCS contact portion 213 at the timing when the movable contact 62 of the DCS 60 is pushed into the housing of the DCS 60 by the contact portion 213B and the DCS 60 switches from off to on during the closing operation of the door 80. FIG. 11 shows the positional relationship between the DCS 60 and the DCS contact portion 213 at the timing when the movable contact 62 of the DCS 60 is completely pushed into the housing of the DCS 60 by the contact portion 213B and the contact portion 213B contacts the housing of the DCS 60 during the closing operation of the door 80. FIG. 12 shows the positional relationship between the DCS 60 and the DCS contact portion 213 when the door 80 further moves in the closing direction from the state of FIG. 11 and the distance between the contact portion 213B and the main body portion 213A reaches the shortest length of the spring portion 213D. When transitioning from the state of FIG. 11 to the state of FIG. 12, since the contact portion 213B contacts the housing of the DCS 60 and cannot move, the spring portion 213D contracts as the door 80 moves in the closing direction.

[0107] Also, when the door 80 is opening, the positional relationship between the DCS 60 and the DCS contact portion 213 usually changes in the order of FIGS. 11, 10, and 9. Further, when the positional relationship of FIG. 12 is established during the closing operation of the door 80, it changes in the order of FIGS. 12, 11, 10, and 9.

[0108] Figure 12 shows the positional relationship between DCS60 and the DCS contact portion 213 when, during the opening operation of the door 80, the movable contact 62 is fully pushed into the housing of DCS60 and the distance between the contact portion 213B and the main body portion 213A is at the shortest length of the spring portion 213D. Figure 11 shows the positional relationship between DCS60 and the DCS contact portion 213 when, during the opening operation of the door 80, the movable contact 62 is fully pushed into the housing of DCS60 and the distance between the contact portion 213B and the main body portion 213A is at the natural length of the spring portion 213D. When transitioning from the state of Figure 12 to the state of Figure 11, the position of the contact portion 213B in the longitudinal direction of the railway vehicle 1 or the opening and closing direction of the door 80 does not change, and the spring portion 213D, which is contracted to the shortest length in the state of Figure 12, extends. Figure 10 shows the positional relationship between DCS60 and the DCS contact portion 213 at the timing when the restriction on the movable contact 62 by the contact portion 213B is gradually released during the opening operation of the door 80, the movable contact 62 of DCS60 comes out of the housing of DCS60, and DCS60 switches from on to off. Figure 9 shows the positional relationship between DCS60 and the DCS contact portion 213 at the timing when the restriction on the movable contact 62 by the contact portion 213B is completely released during the opening operation of the door 80, and the movable contact 62 of DCS60 protrudes from the housing of DCS60 by the maximum amount. When transitioning from the state of Figure 11 to the states of Figures 10 and 9, the longitudinal distance between the contact portion 213B and the main body portion 213A is maintained at the maximum value within the range where the contact portion 213B is movable relative to the main body portion 213A, and as the door 80 moves in the opening direction, the movable contact 62 gradually comes out from inside DCS60. This is because the movable contact 62 is biased to come out of the outside of the housing of DCS60.

[0109] [Overview of the Support System] Next, with reference to Figure 13, the support system SYS according to the present embodiment will be described.

[0110] Figure 13 is a diagram showing the configuration of an example of the support system SYS.

[0111] The support system SYS performs a diagnosis of abnormalities related to door 80 (hereinafter referred to as "abnormality diagnosis"), and when the diagnosis result indicates an abnormality or a sign thereof, it supports the crew of the railway vehicle 1 in taking measures against the abnormality or its sign related to door 80. The crew of the railway vehicle 1 includes, for example, a driver and a conductor.

[0112] The abnormalities related to door 80 include comprehensive or individual abnormalities of a plurality of functional items necessary for the operation of door 80. The plurality of functional items may include functional items dependent on hardware related to the opening and closing operation of door 80, functional items dependent on software related to the opening and closing operation of door 80, and functional items dependent on both. In addition, the abnormalities related to door 80 include, for example, relatively minor abnormalities in which the functions necessary for the operation of door 80 are not impaired but there is a deviation from the normal state, to severe abnormalities in which some or all of the functions necessary for the operation of door 80 are impaired. Severe abnormalities related to door 80 correspond to failures related to door 80. In addition, the abnormalities related to door 80 include, for example, abnormalities (i.e., deterioration) indicating a state in which the functions of the functional items of door 80 have deteriorated irreversibly, and abnormalities indicating a reversibly deteriorated state.

[0113] Abnormality diagnosis includes, for example, diagnosis of the presence or absence of abnormalities, diagnosis of the degree of abnormality (abnormality level), etc. The abnormality level may include the deterioration level. In addition, abnormality diagnosis may include diagnosis of the remaining life. In addition, abnormality diagnosis may include diagnosis of the presence or absence of signs of abnormalities.

[0114] As shown in FIG. 13, the support system SYS includes a support device 2, a user interface (UI) device 3, and a door control device 100.

[0115] The support device 2 is provided in a support facility SF outside the railway vehicle 1, and supports from outside the railway vehicle 1 the crew of the railway vehicle 1 in responding to an abnormality or its sign related to door 80 in response to an input from a supporter SP. The support facility SF includes, for example, a railway command room and a vehicle base.

[0116] The support device 2 is communicably connected to a communication device 18 mounted on the railway vehicle 1, for example, through a predetermined communication line, and is communicably connected to the UI device 3 and the door control device 100 through the communication device 18. The predetermined communication line includes, for example, a wide area network (WAN: Wide Area Network). The wide area network includes, for example, a mobile communication network with a base station as an end, a satellite communication network using communication satellites, the Internet, and the like. Further, the predetermined communication line may include a short-distance communication line based on a predetermined communication standard such as WiFi or Bluetooth (registered trademark).

[0117] Note that the communication device 18 may be provided in a form shared by both the UI device 3 and the door control device 100, or different communication devices 18 may be provided for each of the UI device 3 and the door control device 100. In the latter case, the communication methods of the communication devices 18 corresponding to the UI device 3 and the door control device 100 may be the same or different. Also, in the latter case, the communication device 18 may be provided in a form shared by all of the plurality of door control devices 100 provided in the railway vehicle 1, or a plurality of communication devices 18 shared among some of the plurality of door control devices 100 may be provided. Further, the UI device 3 may be directly communicably connected to the communication device 18, or may be communicably connected to the communication device 18 via another device inside the railway vehicle 1. In the latter case, for example, the UI device 3 is communicably connected to the communication device 18 via the transmission device 16 or the vehicle control device 12 and the transmission device 16. Similarly, the door control device 100 may be directly communicably connected to the communication device 18, or may be communicably connected to the communication device 18 via another device inside the railway vehicle 1. In the latter case, for example, the door control device 100 is communicably connected to the communication device 18 via the transmission device 16. Also, the function of the communication device 18 may be built into the UI device 3. Similarly, the function of the communication device 18 may be built into the door control device 100.

[0118] The support device 2 may be a server device with relatively high processing power as long as the required processing power is guaranteed, or may be a terminal device with relatively low processing power. The server device may be, for example, a cloud server, an on-premises server, or an edge server. The terminal device may be, for example, a stationary terminal device such as a desktop PC (Personal Computer), or may be a portable terminal device (mobile terminal) such as a smartphone, a tablet terminal, a laptop computer, etc.

[0119] The UI device 3 is used by the crew members on board the railway vehicle 1. The UI device 3 provides information to the crew members of the railway vehicle 1 by visual or auditory means, or receives input from the crew members of the railway vehicle 1 and transmits a signal corresponding to the input content to a transmission destination corresponding to the input content.

[0120] The UI device 3 may be pre-mounted on the railway vehicle 1, or may be brought into the railway vehicle 1 in a form carried by the crew members. In the former case, the UI device 3 is mounted, for example, on the driver's console in the driver's cab or conductor's cab of the railway vehicle 1. In the latter case, the UI device 3 is, for example, a portable terminal device (mobile terminal). The mobile terminal includes, for example, a smartphone, a tablet terminal, a laptop computer, etc.

[0121] [Hardware Configuration of Support Device] Next, with reference to FIG. 14, the hardware configuration of the support device 2 will be described.

[0122] FIG. 14 is a diagram showing an example of the hardware configuration of the support device 2.

[0123] In addition, when the UI device 3 is a mobile terminal, the UI device 3 has the same hardware configuration as the support device 2.

[0124] The functions of the support device 2 are realized by any hardware, or any combination of hardware and software, etc. For example, as shown in FIG. 14, the support device 2 includes an external interface 2A, an auxiliary storage device 2B, a memory device 2C, a CPU 2D, a high-speed arithmetic device 2E, a communication interface 2F, an input device 2G, a display device 2H, and a sound output device 2I. These components are communicably connected to each other through, for example, a bus BS.

[0125] The external interface 2A functions as an interface for reading data from the recording medium 2Aa and writing data to the recording medium 2Aa. The recording medium 2Aa includes, for example, a flexible disk, a CD (Compact Disc), a DVD (Digital Versatile Disc), a BD (Blu-ray (registered trademark) Disc), an SD memory card, a USB (Universal Serial Bus) memory, etc. Thereby, the support device 2 can read various data used in processing through the recording medium 2Aa, store it in the auxiliary storage device 2B, or install a program for realizing various functions.

[0126] In addition, the support device 2 may acquire various data and programs used in processing from an external device through the communication interface 2F.

[0127] The auxiliary storage device 2B stores various installed programs and stores files, data, etc. necessary for various processes. The auxiliary storage device 2B includes, for example, an HDD (Hard Disc Drive), an SSD (Solid State Drive), an EEPROM, a flash memory, etc.

[0128] When there is an instruction to start a program, the memory device 2C reads the program from the auxiliary storage device 2B and stores it. The memory device 2C includes, for example, a DRAM (Dynamic Random Access Memory) and an SRAM.

[0129] The CPU 2D executes various programs loaded from the auxiliary storage device 2B to the memory device 2C, and realizes various functions related to the support device 2 according to the programs.

[0130] The high-speed arithmetic unit 2E operates in conjunction with the CPU 2D and performs arithmetic processing at a relatively high speed. The high-speed arithmetic unit 2E includes, for example, a GPU (Graphics Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), etc.

[0131] Note that the high-speed arithmetic unit 2E may be omitted depending on the speed of the necessary arithmetic processing.

[0132] The communication interface 2F is used as an interface for communicably connecting to other devices different from the support device 2. Thereby, the support device 2 can communicate with, for example, the UI device 3 and the transmission device 16 through the communication interface 2F. Also, the communication interface 2F may have a plurality of types of communication interfaces according to the difference in the communication method for each connected device.

[0133] The input device 2G receives various inputs from the user.

[0134] The input device 2G includes, for example, an operation input device in a form that receives a mechanical operation input from the user. The operation device for remote operation may be an operation input device. The operation input device includes, for example, buttons, toggles, levers, a touch panel mounted on the display device 2H, a touch pad provided separately from the display device 2H, a keyboard, a mouse, etc.

[0135] Also, the input device 2G includes, for example, a voice input device capable of receiving a voice input from the user. The voice input device includes, for example, a microphone capable of collecting the user's voice.

[0136] Further, the input device 2G includes, for example, a gesture input device capable of receiving gesture input from a user. The gesture input device includes, for example, a camera capable of imaging the state of the user's gesture.

[0137] Also, the input device 2G includes, for example, a biometric input device capable of receiving biometric input from a user. The biometric input device includes, for example, a camera capable of acquiring image data containing information about the user's fingerprint or iris.

[0138] The display device 2H displays an information screen or an operation screen for the user. The display device 2H is, for example, a liquid crystal display, an organic EL (Electroluminescence) display, or the like.

[0139] The sound output device 2I conveys various information by sound to the user of the support device 2. The sound output device 2I is, for example, a buzzer, an alarm, a speaker, or the like.

[0140] [Functional Configuration of Support System] Next, with reference to FIG. 15, the functional configuration of the support system SYS will be described.

[0141] FIG. 15 is a diagram showing an example of the functional configuration of the support system SYS.

[0142] As shown in FIG. 15, the door control device 100 includes an operation information acquisition unit 1001, a diagnosis unit 1002, a notification unit 1003, and an operation information transmission unit 1004. These functions are realized, for example, by loading a program installed in an auxiliary storage device into a memory device and executing it on a CPU.

[0143] The operation information acquisition unit 1001 acquires information (operation information) related to the opening and closing operation of the door 80.

[0144] The operation information of the door 80 includes, for example, information representing the state of the door 80 during the opening operation or closing operation of the door 80, data of acquisition targets such as physical quantities and signals (hereinafter simply referred to as "acquisition targets"). The acquisition targets include, for example, information indicating whether it is an opening operation or a closing operation of the door 80 (opening / closing information), the position of the door 80 (specifically, the positions of the door panels 80A and 80B), and electrical characteristic quantities of the motor 30 (for example, current). In addition, the acquisition targets include various signals such as DLS signals, DCS signals, signals indicating the presence or absence of foreign objects being pinched in the door 80 during the closing operation of the door 80, and signals indicating the presence or absence of foreign objects being drawn into the door pocket of the door 80 during the opening operation of the door 80. Further, the acquisition targets may include information used for controlling the door 80. The information used for the door 80 includes, for example, command values and internal signals inside the door control device 100 (for example, signals representing sequence numbers in software). In addition, the acquisition targets include data and determination result information acquired during the most recent pre-departure inspection and recorded inside the railway vehicle 1 such as the door control device 100.

[0145] The operation information acquisition unit 1001 acquires the operation information of the door 80, which is necessary for the abnormality diagnosis regarding the door 80, performed by the diagnosis unit 1002.

[0146] Further, when the diagnosis result of the abnormality diagnosis regarding the door 80 indicates that there is an abnormality or a sign thereof regarding the door 80, the operation information acquisition unit 1001 acquires the operation information of the door 80 for considering measures against the abnormality or the sign thereof regarding the door 80. The operation information of the door 80 for considering measures against the abnormality or the sign thereof regarding the door 80 is defined for each type of diagnosis item described later, for example. Further, the operation information of the door 80 for considering measures against the abnormality or the sign thereof regarding the door 80 may be the type of operation information specified by an acquisition command from the support device 2. Further, the operation information of the door 80 for considering measures against the abnormality or the sign thereof regarding the door 80 may include not only the operation information newly acquired according to the opening and closing operation of the door 80 but also the operation information acquired and held in advance. The operation information acquired and held in advance includes, for example, the operation information used in the abnormality diagnosis when the diagnosis result of the abnormality diagnosis indicates that there is an abnormality or a sign thereof regarding the door 80. Further, the operation information acquired and held in advance includes, for example, data and determination result information at the time of pre-delivery inspection described above.

[0147] The diagnosis unit 1002 causes the operation information acquisition unit 1001 to acquire the operation information of the door 80 necessary for it, and performs an abnormality diagnosis regarding the door 80 based on the operation information of the door 80 acquired by the operation information acquisition unit 1001.

[0148] The diagnosis unit 1002 performs an abnormality diagnosis regarding the door 80, for example, in response to a command received from the outside such as the vehicle control device 12 or the support device 2. The command from the outside is manually output, for example, in response to an input from a crew member of the railway vehicle 1 or a supporter SP of the support facility SF. Further, the command from the outside may be automatically output from the vehicle control device 12 or the support device 2 in response to the establishment of a pre-defined condition. This condition is defined in advance for each diagnosis item described later, for example. The pre-defined condition is, for example, a condition regarding the cycle or timing of executing the abnormality diagnosis. Further, the pre-defined condition may be a condition regarding the operation information of the door 80.

[0149] Further, the diagnosis unit 1002 may automatically execute an abnormality diagnosis in response to the establishment of a predetermined condition similar to the above without relying on an external command.

[0150] The diagnosis unit 1002 performs an abnormality diagnosis on some or all of the diagnosis items among a plurality of function items. The diagnosis items include, for example, items related to the running resistance of the door 80 and items related to the position of the DCS60 or the DCS contact portion 213. Further, the diagnosis items may include items related to the positional relationship between the lock pin 230 and the lock hole 223A in the fully closed state of the door 80, items related to the fastening structure between the door panels 80A and 80B and the door drive mechanism 200, and the like.

[0151] For example, for each diagnosis item, the operation content of the door 80 and the type of operation information to be acquired are predetermined. The operation information acquisition unit 1001 causes the door 80 to execute a specified predetermined operation and acquires the type of operation information to be acquired during that operation. Further, when the operation information of the door 80 required for the abnormality diagnosis for each diagnosis item has already been acquired, the execution of the predetermined operation of the door 80 may be omitted. For example, when the operation information acquired when at least one of the opening operation and the closing operation of the door 80 is performed during the stop at the nearest station can be used for the abnormality diagnosis related to the diagnosis item, the process of causing the door 80 to execute a predetermined operation is omitted.

[0152] When the operation information acquisition unit 1001 has completed the acquisition of operation information for the abnormality diagnosis regarding the diagnosis items of the door 80, the diagnosis unit 1002 performs an abnormality diagnosis regarding the diagnosis items of the door 80 based on the acquired operation information. The diagnosis unit 1002 may perform the abnormality diagnosis using the operation information of the door 80 as it is, or may perform the abnormality diagnosis using the information (processed information) obtained by processing the operation information. The processed information includes, for example, the data of the result of the frequency analysis of the data of the operation information. The data of the result of the frequency analysis of the data of the operation information is obtained, for example, by applying the fast Fourier transform (FFT) to the data of the operation information. Further, it may be obtained by applying the continuous wavelet transform (CWT), the short time Fourier transform (STFT), etc. to the data of the operation information.

[0153] The diagnostic unit 1002 performs an abnormality diagnosis regarding the diagnostic items of the door 80 based on, for example, a comparison between operation information and its processed information (e.g., data of the result of frequency analysis) and reference information. The reference information includes, for example, reference values (threshold values) regarding the feature amounts of the data of the operation information and the data of the result of frequency analysis. Thereby, the diagnostic unit 1002 can diagnose, for example, the presence or absence of an abnormality regarding the diagnostic items of the door 80, the presence or absence of its signs, the degree of abnormality, etc., by comparing the magnitude relationship between the feature amount obtained from the operation information or the processed information and the reference value. Further, the reference information may include data of the same type as the data of the operation information and the data of the result of frequency analysis (i.e., data of the same physical quantity), which represents the normal state or the abnormal state of the door 80. Thereby, the diagnostic unit 1002 can diagnose the presence or absence of an abnormality regarding the diagnostic items of the door 80, the presence or absence of its signs, the degree of abnormality, etc., by evaluating the degree of deviation between the data of the operation information or the processed information and the data of the reference information by a known method. Further, the reference information may be data of the past operation information of the door 80 that is the object of the abnormality diagnosis and the data of the result of its frequency analysis, etc. Further, the reference information may be data of the past operation information of another door 80 different from the door 80 that is the object of the abnormality diagnosis and the data of the result of its frequency analysis. Thereby, the diagnostic unit 1002 can diagnose the presence or absence of an abnormality regarding the diagnostic items of the door 80, the presence or absence of its signs, the degree of abnormality, etc., by evaluating the degree of deviation between the operation information, etc. immediately after measurement and the past operation information, etc.

[0154] Further, the diagnostic unit 1002 may perform an abnormality diagnosis regarding the diagnostic items of the door 80 from the tendency of the change in the data of the operation information and the data of the result of its frequency analysis by using the history of the data of the operation information and the data of the result of its frequency analysis including the current portion. In this case, the history of the data of the operation information and the data of the result of its frequency analysis may be stored inside the railway vehicle 1, such as in the auxiliary storage device of the door control device 100, or may be stored in an external device of the railway vehicle 1 (e.g., the auxiliary storage device 2B of the support device 2, etc.).

[0155] Further, the diagnosis unit 1002 may perform an abnormality diagnosis regarding the diagnosis items of the door 80 by using a learned model obtained through supervised learning based on data of operation information, data of the result of its frequency analysis, or data of feature amounts obtained therefrom. In this case, the learned model is obtained by performing machine learning of a base learning model based on teacher data in which data obtained by an accelerated durability test using an actual machine or data obtained by computer simulation is labeled as normal or abnormal. For example, the learned model is mainly configured with a deep neural network (DNN: Deep Neural Network), and is optimized by applying a machine learning algorithm such as the error backpropagation method based on teacher data. The same may apply to various learned models by supervised learning described later.

[0156] In addition, there may be a case where big data corresponding to historical data such as data of operation information, data of its frequency analysis, and data of diagnosis results regarding diagnosis items of a large number of doors 80 of a plurality of railway vehicles 1 can be used. In this case, the diagnosis unit 1002 may perform an abnormality diagnosis regarding the function items of the door 80 by applying machine learning (unsupervised learning) such as clustering based on the big data.

[0157] Further, the diagnosis unit 1002 may perform processing associated with the abnormality diagnosis in addition to the abnormality diagnosis regarding the diagnosis items of the door 80.

[0158] For example, when the diagnosis unit 1002 diagnoses that there is an abnormality or a sign thereof regarding the diagnosis items of the door 80, or when it diagnoses that the degree of abnormality is relatively high with respect to a predetermined standard, it estimates the cause of the abnormality or the sign based on the data of operation information and the data of the result of its frequency analysis. That the degree of abnormality is relatively high with respect to a predetermined standard may mean that the degree of abnormality is equal to or higher than the predetermined standard, or may mean that it is higher than the predetermined standard.

[0159] Further, the diagnosis unit 1002 may estimate the cycle and timing of future inspections and checks of the diagnosis items of the door 80 based on the diagnosis results of the degree of deterioration and remaining life of the diagnosis items of the door 80.

[0160] The notification unit 1003 notifies the crew of the railway vehicle 1 about the information regarding the diagnosis result of the abnormality diagnosis related to the door 80 by the diagnosis unit 1002 through the UI device 3. Specifically, the notification unit 1003 notifies the crew of the railway vehicle 1 about the information regarding the diagnosis result of the abnormality diagnosis related to the door 80 by transmitting a notification command including the diagnosis result to the UI device 3 and then through the UI device 3. Regardless of the content of the diagnosis result, the notification unit 1003 may notify the crew of the railway vehicle 1 about the information regarding the diagnosis result, or may notify the crew of the railway vehicle 1 about the information regarding the diagnosis result only when the diagnosis result indicates an abnormality related to the door 80 or a sign thereof. When the diagnosis result indicates an abnormality related to the door 80 or a sign thereof, for example, it includes the case of a diagnosis result indicating that the degree of abnormality related to the door 80 is relatively high with respect to a predetermined standard.

[0161] In addition, the notification unit 1003 notifies the supporter SP of the support facility SF through the support device 2 about the information regarding the diagnosis result of the abnormality diagnosis related to the door 80 by the diagnosis unit 1002. Specifically, the notification unit 1003 notifies the supporter SP about the information regarding the diagnosis result of the abnormality diagnosis related to the door 80 by transmitting a notification command including the diagnosis result to the support device 2 and then through the display device 2H and the sound output device 2I of the support device 2. Regardless of the content of the diagnosis result, the notification unit 1003 may notify the supporter SP about the information regarding the diagnosis result, or may notify the supporter SP about the information regarding the diagnosis result only when the diagnosis result indicates an abnormality related to the door 80 or a sign thereof.

[0162] The information regarding the diagnosis result includes, for example, information representing the diagnosis item and information representing the diagnosis result. Further, the information regarding the diagnosis result may include the operation information used for the abnormality diagnosis. Also, the information regarding the diagnosis result may include information representing the history of the most recent diagnosis results related to the same diagnosis item.

[0163] In addition, when the diagnosis result indicates an abnormality or its sign related to the door 80, the notification unit 1003 may notify the crew of the railway vehicle 1 through the UI device 3 of information regarding the measures for initial response to the abnormality or its sign related to the door 80. Thereby, the support system SYS can complete the process of notifying the crew of the measures for initial response inside the railway vehicle 1. As a result, after obtaining the diagnosis result indicating an abnormality or its sign related to the door 80, the support system SYS can notify the crew of the railway vehicle 1 of the measures for the abnormality or its sign related to the door 80 more quickly. Therefore, the crew of the railway vehicle 1 can quickly take the measures for initial response to the abnormality or its sign related to the door 80.

[0164] The measures for initial response are the measures that can be implemented at the discretion of the crew of the railway vehicle 1 among the measures for the abnormality or its sign of the door 80, and more specifically, the measures that can be implemented within a range that does not affect the operation of the railway vehicle 1. The measures for initial response include, for example, reissuing the opening command and the closing command. In addition, the measures for initial response include, for example, restarting the power supply of the door system including the target door 80. Specifically, it is the measure of turning off the breaker of the door system, turning it on again, and then starting the devices necessary for the operation of the door 80. In addition, the measures for initial response include, for example, operating the emergency unlocking handle of the target door 80. For example, when a foreign object is caught in the door pocket, the door 80 can be manually unlocked and manually operated to remove the foreign object and return the door 80 to normal operation. In addition, the measures for initial response include, for example, turning off the power of the target door 80.

[0165] For example, information representing initial response measures is predefined for each of a plurality of diagnostic items. Thereby, the notification unit 1003 can read, from an auxiliary storage device or the like, information representing the initial response process of the diagnostic item corresponding to the diagnostic result indicating an abnormality or a sign thereof among the plurality of diagnostic items, and notify the crew of the railway vehicle 1 through the UI device 3. Further, the correspondence between the cause of the abnormality or its sign and the initial response measure may be predefined. Thereby, when the diagnostic unit 1002 has estimated the cause of the abnormality or its sign, the notification unit 1003 can read, from an auxiliary storage device or the like, information representing the initial response measure according to the cause, and notify the crew of the railway vehicle 1 through the UI device 3.

[0166] Further, the notification unit 1003 may notify a plurality of initial response measures for an abnormality or a sign thereof related to the door 80. Thereby, the crew of the railway vehicle 1 can select and execute a measure suitable for the current state of the door 80 from among the options of the plurality of initial response measures. Also, the crew of the railway vehicle 1 may be able to receive an instruction on the measure to be selected from the supporter SP of the support facility SF through the UI device 3 from among the options of the plurality of initial response measures. For example, the crew of the railway vehicle 1 receives an instruction on the measure to be selected by means of a voice call function such as digital radio between the support device 2 and the UI device 3 via the communication device 18. Also, the crew of the railway vehicle 1 may receive an instruction on the measure to be selected by means of a chat function by data communication between the support device 2 and the UI device 3 via the communication device 18.

[0167] In addition, the notification unit 1003 may notify the supporter SP, etc. of the support facility SF through the support device 2 of the result of the process associated with the abnormality diagnosis regarding the door 80 by the diagnosis unit 1002. Thereby, for example, the supporter SP can determine the measures for the abnormality or its sign regarding the door 80 based on the estimated result of the cause of the abnormality or its sign regarding the door 80. Also, for example, the person of the support facility SF such as the supporter SP can consider and adjust the cycle and timing of future inspections and checks for each diagnostic item of the door 80 based on the estimated result of the cycle and timing of future inspections and checks of the diagnostic items of the door 80.

[0168] The operation information transmission unit 1004 transmits the operation information for considering the measures for the abnormality or its sign regarding the door 80, which is acquired by the operation information acquisition unit 1001, to the support device 2.

[0169] The support device 2 includes a vehicle - side information acquisition unit 21, a vehicle - side information notification unit 22, an acquisition command transmission unit 23, a measure information acquisition unit 24, and a measure information notification unit 25. These functional units are realized, for example, by loading a program installed in the auxiliary storage device 2B into the memory device 2C and executing it on the CPU 2D.

[0170] The vehicle - side information acquisition unit 21 acquires various information (vehicle - side information) received from the railway vehicle 1 from a reception buffer or the like. The vehicle - side information includes, for example, information regarding the diagnosis result of the abnormality diagnosis regarding the door 80 transmitted from the notification unit 1003 and the operation information transmitted from the operation information transmission unit 1004.

[0171] The vehicle - side information notification unit 22 notifies the supporter SP of the support facility SF of the information acquired by the vehicle - side information acquisition unit 21. As a result, the supporter SP can confirm the information regarding the result of the abnormality diagnosis related to the door 80 transmitted from the notification unit 1003 to the support device 2. Further, the supporter SP can confirm and analyze the operation information transmitted from the operation information transmission unit 1004 to the support device 2, and as a result, can consider measures against the abnormality or its sign related to the door 80. The vehicle - side information notification unit 22 notifies the supporter SP of the information visually, for example, through the display device 2H. Also, the vehicle - side information notification unit 22 may notify the supporter SP of the information aurally through the sound output device 2I.

[0172] The acquisition command transmission unit 23 transmits an acquisition command for the operation information of the door 80 to the railway vehicle 1 in response to the input from the supporter SP through the input device 2G. As a result, the supporter SP can cause the door control device 100 to acquire the operation information necessary for considering measures against the abnormality or its sign related to the door 80. The type of the operation information of the door 80 to be acquired may be defined in advance for each diagnosis item, or may be settable by the supporter SP through the input device 2G.

[0173] When the operation information acquisition unit 1001 receives an acquisition command from the support device 2, it acquires the operation information of the door 80, and the operation information transmission unit 1004 returns the operation information of the door 80 acquired by the operation information acquisition unit 1001 to the support device 2. As a result, the vehicle - side information notification unit 22 can notify the supporter SP of the operation information of the door 80 acquired by the vehicle - side information acquisition unit 21. As a result, the supporter SP can consider measures against the abnormality or its sign related to the occurring door 80 by analyzing the operation information of the door 80 acquired in response to the acquisition command.

[0174] Measures for abnormalities or signs thereof related to the door 80 include, for example, reissuing opening and closing commands. Also, measures for abnormalities or signs thereof related to the door 80 include, for example, restarting the power supply of the door system including the target door 80. Specifically, it is a measure of turning off the breaker of the door system and then turning it on again, and then starting the devices necessary for the operation of the door 80. Also, measures for abnormalities or signs thereof related to the door 80 include, for example, operating the emergency unlocking handle of the target door 80, etc. For example, when a foreign object is caught in the door pocket, the door 80 can be manually unlocked and manually operated to remove the foreign object and return the door 80 to normal operation. Also, measures for abnormalities or signs thereof related to the door 80 include, for example, turning off the power of the target door 80. Thereby, the opening operation of the door 80 in which an abnormality or its sign has occurred can be prohibited. Also, measures for abnormalities or signs thereof related to the door 80 include, for example, suspending the use of the railway vehicle 1 itself. Thereby, for example, when the abnormality of the target door 80 is serious or the degree of deterioration is very high, the use of the railway vehicle 1 can be suspended and a detailed inspection can be carried out promptly. Also, measures for abnormalities or signs thereof related to the door 80 include, for example, causing the door 80 to execute a predetermined operation for identifying the cause or target part of the abnormality or its sign related to the door 80. Thereby, for example, the supporter SP can identify the cause or target part of the abnormality or its sign related to the door 80 from the operation information obtained during the predetermined operation of the door 80.

[0175] The treatment information acquisition unit 24 acquires information (treatment information) regarding treatment for an abnormality or a sign thereof related to the door 80 in response to an input from the supporter SP through the input device 2G.

[0176] The supporter SP checks, for example, the operation information of the door 80 notified by the vehicle-side information notification unit 22, and by checking various reference information, considers and determines measures for abnormalities or signs thereof regarding the target door 80. The various reference information includes, for example, materials related to maintenance such as the maintenance manual of the door 80. Also, the various reference information includes, for example, a database regarding cases of occurrence of abnormalities or signs thereof related to the door 80. Specifically, the supporter SP may identify the target part and cause corresponding to the abnormality or its sign regarding the door 80 from the operation information of the door 80 and various reference information and determine the measures.

[0177] In addition, instead of or in addition to acquiring the treatment information according to the input from the supporter SP, the treatment information acquisition unit 24 may acquire the treatment information by determining the treatment for the abnormality or its sign regarding the door 80 by itself and generating the treatment information. For example, the treatment information acquisition unit 24 may acquire the treatment information by inferring the treatment for the abnormality or its sign regarding the door 80 using a learned model in which supervised learning has been performed based on the operation information of the door 80. In this case, the learned model is obtained by performing machine learning on the base learning model based on a dataset of teacher data composed of, for example, a combination of the operation information of the database regarding past cases of occurrence of abnormalities and their signs and the implemented treatments.

[0178] The treatment information notification unit 25 notifies the crew of the railway vehicle 1 of the treatment information acquired by the treatment information acquisition unit 24 through the UI device 3. Specifically, the treatment information notification unit 25 transmits a notification command including the treatment information to the railway vehicle 1. Thereby, the UI device 3 can notify the crew of the railway vehicle 1 of the treatment information according to the notification command received through the communication device 18.

[0179] For example, the supporter SP notifies the crew of the railway vehicle 1 of the treatment information through a voice call function such as digital radio, which is realized by functional units such as the treatment information acquisition unit 24 and the treatment information notification unit 25. Further, the supporter SP may notify the crew of the railway vehicle 1 of the treatment information through a chat function, which is realized by functional units such as the treatment information acquisition unit 24 and the treatment information notification unit 25.

[0180] In addition, as described above, the processing information may be obtained without depending on the input from the supporter SP. In this case, for example, the treatment information notification unit 25 notifies the crew of the railway vehicle 1 through the UI device 3 in response to an input corresponding to the confirmation by the supporter SP for the treatment information automatically obtained by the treatment information acquisition unit 24. Thereby, the supporter SP can confirm the treatment information automatically generated by the treatment information acquisition unit 24, and if necessary, correct it and then notify the crew of the railway vehicle 1. Further, the treatment information notification unit 25 may automatically notify the crew of the railway vehicle 1 through the UI device 3 of the treatment information automatically obtained by the treatment information acquisition unit 24 without depending on the input from the supporter SP. Thereby, it is possible to automate the process from the generation to the notification of the treatment information.

[0181] [Operation of the support system in the normal state regarding the door] With reference to FIG. 16, the operation of the support system SYS in a state where there are no abnormalities and signs thereof regarding the door 80 (normal state regarding the door 80) will be described.

[0182] FIG. 16 is a sequence diagram showing an example of the operation of the support system SYS in a state where there are no abnormalities and signs thereof regarding the door 80.

[0183] As shown in FIG. 16, the diagnosis unit 1002 of the door control device 100 performs an abnormality diagnosis regarding the door 80 (step S102).

[0184] In this example, the diagnosis unit 1002 diagnoses that there are no abnormalities and signs thereof regarding the door 80, and outputs a diagnosis result indicating normality.

[0185] When step S102 is completed, the notification unit 1003 of the door control device 100 transmits a notification command including a diagnosis result indicating normality to the UI device 3 (step S104).

[0186] The UI device 3 receives the notification command transmitted in step S104 (step S106).

[0187] When step S106 is completed, the UI device 3 displays a diagnosis result indicating normality on its own display device (step S108).

[0188] Thereby, the crew of the railway vehicle 1 can confirm that an abnormality diagnosis regarding the door 80 has been executed and that the diagnosis result is normal.

[0189] In addition, when the diagnosis result of the abnormality diagnosis regarding the door 80 indicates normality, the processes of steps S104, S106, and S108 may be omitted. Also, when the diagnosis result of the abnormality diagnosis regarding the door 80 indicates normality, the process of step S108 may be omitted, and the information regarding the diagnosis result received in step S106 may be stored in the UI device 3 as a log of the diagnosis result. Thereby, the crew of the railway vehicle 1 can retrospectively confirm the history of the information regarding the diagnosis result by operating the UI device 3.

[0190] Also, the notification unit 1003 of the door control device 100, in conjunction with the process of step S104, transmits a notification command including a diagnosis result indicating normality to the support device 2 (step S110).

[0191] The support device 2 receives the notification command transmitted in step S110 (step S112).

[0192] When step S112 is completed, the vehicle - side information notification unit 22 of the support device 2 displays a diagnosis result indicating normality on the display device 2H (step S114).

[0193] As a result, the supporter SP of the support facility SF can have an abnormality diagnosis performed on the door 80 and confirm that the diagnosis result is normal.

[0194] In addition, when the diagnosis result of the abnormality diagnosis regarding the door 80 indicates normal, the processes of steps S110, S112, and S114 may be omitted. Also, when the diagnosis result of the abnormality diagnosis regarding the door 80 indicates normal, the process of step S114 may be omitted, and the information regarding the diagnosis result received in step S106 may be accumulated in the support device 2 as a log of the diagnosis result. Thereby, the supporter SP can retrospectively check the history of the information regarding the diagnosis result by operating the support device 2.

[0195] [Operation of the support system in an abnormal state regarding the door] Next, with reference to FIGS. 17 to 19, the operation of the support system SYS in a state where there is an abnormality or a sign thereof regarding the door 80 (abnormal state regarding the door 80) will be described.

[0196] <First example> FIG. 17 is a sequence diagram showing a first example of the operation of the support system SYS in a state where there is an abnormality or a sign thereof regarding the door 80.

[0197] As shown in FIG. 17, the diagnosis unit 1002 of the door control device 100 performs an abnormality diagnosis regarding the door 80 (step S202).

[0198] In this example, the diagnosis unit 1002 diagnoses that there is an abnormality regarding the door 80 or a sign of an abnormality regarding the door 80, and outputs a diagnosis result indicating that there is an abnormality or a sign of an abnormality.

[0199] When step S202 is completed, the notification unit 1003 of the door control device 100 transmits a notification command including the diagnosis result indicating that there is an abnormality or a sign of an abnormality to the UI device 3 (step S204).

[0200] The UI device 3 receives the notification command transmitted in step S204 (step S206).

[0201] When step S206 is completed, the UI device 3 displays, on its own display device, a diagnostic result indicating that there is an abnormality or a sign of an abnormality (step S208).

[0202] Thereby, the crew of the railway vehicle 1 can confirm that an abnormality diagnosis regarding the door 80 has been executed and that the diagnostic result indicates an abnormality or the presence of a sign of an abnormality.

[0203] In addition, the notification unit 1003 of the door control device 100 transmits, in conjunction with the process of step S204, a notification command including a diagnostic result indicating an abnormality or a sign of an abnormality to the support device 2 (step S210).

[0204] The support device 2 receives the notification command transmitted in step S210 (step S212).

[0205] When step S212 is completed, the vehicle - side information notification unit 22 of the support device 2 displays, on the display device 2H, a diagnostic result indicating an abnormality or a sign of an abnormality (step S214).

[0206] Thereby, the supporter SP of the support facility SF can confirm that an abnormality diagnosis regarding the door 80 has been executed and that the diagnostic result indicates an abnormality or the presence of a sign of an abnormality.

[0207] In addition, when step S210 is completed, the operation information acquisition unit 1001 of the door control device 100 acquires the operation information of the door 80 for considering measures against the abnormality or its sign regarding the door 80 (step S216).

[0208] When step S216 is completed, the operation information transmission unit 1004 of the door control device 100 transmits the operation information of the door 80, acquired in step S216, to the support device 2 (step S218).

[0209] The support device 2 receives the operation information of the door 80 transmitted in step S218 (step S220).

[0210] When step S220 is completed, the vehicle-side information acquisition unit 21 of the support device 2 acquires the operation information of the door 80, and the vehicle-side information notification unit 22 of the support device 2 displays the operation information of the door 80 on the display device 2H (step S222).

[0211] Thereby, the supporter SP at the support facility SF can check the operation information of the door 80, analyze the operation information of the door 80, and consider and determine measures against abnormalities or signs thereof related to the door 80.

[0212] After the completion of step S220, in response to the input from the supporter SP through the input device 2G, the treatment information acquisition unit 24 of the support device 2 acquires the treatment information, and the treatment information notification unit 25 transmits a notification command including the treatment information to the UI device 3 (step S224).

[0213] The UI device 3 receives the notification command including the treatment information transmitted in step S224 (step S226).

[0214] When step S226 is completed, the UI device 3 notifies the crew of the railway vehicle 1 of the treatment information in response to the notification command received in step S226 (step S228).

[0215] Thereby, the UI device 3 can execute the measures proposed by the supporter SP at the support facility SF against abnormalities or signs thereof related to the door 80. Therefore, the supporter SP can support the crew of the railway vehicle 1 in taking measures against abnormalities or signs thereof related to the door 80 through the support system SYS.

[0216] <Second Example> FIG. 18 is a sequence diagram showing a second example of the operation of the support system SYS in a state where there is an abnormality or a sign thereof related to the door 80.

[0217] As shown in FIG. 18, since the operations from step S302 to step S328 are the same as the operations from step S202 to step S228 in FIG. 17, the description thereof is omitted.

[0218] After the completion of step S328, if there is an input from the crew through the input device indicating the implementation of the treatment, a notification signal including information indicating the implementation of the treatment is transmitted to the support device 2 (step S330).

[0219] The support device 2 receives the notification signal transmitted in step S330 (step S332).

[0220] When step S332 is completed, the vehicle-side information acquisition unit 21 of the support device 2 acquires information indicating the implementation of the treatment, and the vehicle-side information notification unit 22 of the support device 2 notifies the supporter SP that the treatment has been implemented through the display device 2H and the sound output device 2I (step S334).

[0221] After the completion of step S334, when an input is made through the input device 2G to request the acquisition of the operation information of the door 80 from the supporter SP, the acquisition command transmission unit 23 of the support device 2 transmits an acquisition command for the operation information of the door 80 to the door control device 100 of the railway vehicle 1 (step S336).

[0222] The door control device 100 receives the acquisition request transmitted in step S336 (step S338).

[0223] When step S338 is completed, the operation information acquisition unit 1001 of the door control device 100 acquires the operation information of the door 80 for considering the treatment for the abnormality or its sign related to the door 80 in response to the acquisition request (step S340).

[0224] When step S340 is completed, the operation information transmission unit 1004 of the door control device 100 transmits the operation information of the door 80 acquired in step S340 to the support device 2 (step S342).

[0225] The support device 2 receives the operation information of the door 80 transmitted in step S342 (step S344).

[0226] When step S344 is completed, the vehicle-side information acquisition unit 21 of the support device 2 acquires the operation information of the door 80, and the vehicle-side information notification unit 22 of the support device 2 displays the operation information of the door 80 on the display device 2H (step S346).

[0227] Thereby, the supporter SP of the support facility SF can confirm the operation state of the door 80 after the treatment by the crew of the railway vehicle 1 through the operation information of the door 80 and verify the effect of the treatment.

[0228] Also, the supporter SP of the support facility SF may consider and determine additional treatments for abnormalities or signs related to the door 80 by analyzing the operation information of the door 80. In this case, steps S348 and subsequent steps may be executed.

[0229] After step S346 is completed, in response to the input from the supporter SP through the input device 2G, the treatment information acquisition unit 24 of the support device 2 acquires the treatment information corresponding to the additional treatment, and the treatment information notification unit 25 transmits a notification command including the treatment information to the UI device 3 (step S348).

[0230] The UI device 3 receives the notification command including the treatment information transmitted in step S348 (step S350).

[0231] When step S350 is completed, the UI device 3 notifies the crew of the railway vehicle 1 of the treatment information corresponding to the additional treatment according to the notification command received in step S350 (step S352).

[0232] As a result, the UI device 3 can execute additional measures proposed by the supporter SP of the support facility SF for the abnormality or its sign related to the door 80. Therefore, the supporter SP can troubleshoot through multiple measures for the abnormality or its sign related to the door 80.

[0233] In addition, after the completion of step S352, the operations from step S330 to step S346 may be further executed. Also, after the completion of that operation, a series of operations including the operations from step S348 to step S352 and the operations from step S330 to step S346 may be further repeatedly executed.

[0234] <Example 3> FIG. 19 is a sequence diagram showing a third example of the operation of the support system SYS in a state where there is an abnormality or its sign related to the door 80.

[0235] Since the operation of step S402 is the same as the operation of step S302 in FIG. 18, the description thereof is omitted.

[0236] When step S402 is completed, the notification unit 1003 of the door control device 100 transmits a notification command including a diagnostic result indicating an abnormality or a sign of an abnormality, and treatment information on an initial response to the abnormality or its sign to the UI device 3 (step S404).

[0237] The UI device 3 receives the notification command transmitted in step S404 (step S406).

[0238] When step S406 is completed, the UI device 3 displays on its display device a diagnostic result indicating an abnormality or a sign of an abnormality, and treatment information on an initial response to the abnormality or its sign (step S408).

[0239] As a result, the crew members of the railway vehicle 1 can check the treatment information and perform the initial response treatment. Therefore, the support system SYS can support the prompt implementation of treatment for abnormalities or signs related to the door 80.

[0240] The operations after step S410 are the same as those after step S310 in FIG. 18, so the description is omitted.

[0241] <Other examples> Appropriate modifications and changes may be made to the above-described first to third examples as appropriate.

[0242] For example, in the above-described first example (FIG. 17), the operations of steps S204, S206, and S208 may be replaced with the operations of steps S404, S406, and S408 in the above-described third example (FIG. 19).

[0243] Also, in the above-described second example (FIG. 18), third example (FIG. 19), and examples of their modifications and changes, the acquisition and transmission of the operation information of the door 80 by the door control device 100 after steps S316, S318 or steps S416, S418 may be automatically performed. For example, starting from the acquisition and transmission of the operation information of the door 80 by the door control device 100 in steps S316, S318 of FIG. 18 or steps S416, S418 of FIG. 19, the acquisition and transmission of the operation information of the door 80 are periodically performed. Further, the door control device 100 may automatically acquire the operation information of the door 80 and transmit it to the support device 2 in response to the implementation of treatment for abnormalities or signs of the door 80.

[0244] [Function] Next, the functions of the support system, support device, and support method according to the present embodiment will be described.

[0245] In the first aspect of the present embodiment, the support system includes a diagnostic information acquisition unit and a first notification unit. The support system is, for example, the above-described support system SYS. The diagnostic information acquisition unit is, for example, the above-described diagnostic unit 1002. The first notification unit is, for example, the notification unit 1003 or the treatment information notification unit 25. Specifically, the diagnostic information acquisition unit acquires information regarding the diagnostic result of an abnormality related to the door of a railway vehicle. The railway vehicle is, for example, the above-described railway vehicle 1. The door is, for example, the above-described door 80. And when the information regarding the diagnostic result indicates that there is an abnormality or a sign thereof related to the door, the first notification unit may notify the crew of the railway vehicle of information regarding the treatment for the abnormality or the sign related to the door. The case where the information regarding the diagnostic result indicates that there is an abnormality or a sign thereof related to the door includes, for example, the case where the diagnostic result corresponding to the information indicates that there is an abnormality or a sign thereof related to the door. Also, the case where the information regarding the diagnostic result indicates that there is an abnormality or a sign thereof related to the door may include the case where the diagnostic result corresponding to the information indicates a state where the degree of abnormality related to the door is relatively high with respect to a predetermined standard.

[0246] Also, in the first aspect of the present embodiment, a support method regarding the treatment for an abnormality or a sign thereof of a door of a railway vehicle executed by the support system may be provided. Specifically, the support method includes a diagnostic information acquisition step and a notification step. More specifically, in the diagnostic information acquisition step, the support system acquires information regarding the diagnostic result of an abnormality related to the door of a railway vehicle. And in the notification step, when the information regarding the diagnostic result indicates that there is an abnormality or a sign thereof related to the door of the railway vehicle, the support system notifies the crew of the railway vehicle of information regarding the treatment for the abnormality or the sign related to the door.

[0247] As a result, when there is an abnormality or a sign thereof related to the door of a railway vehicle, the support system can notify the crew of the railway vehicle of information regarding the abnormality or the sign related to the door and the measures to be taken therefor. Therefore, the support system can support the crew of the railway vehicle in taking measures against the abnormality or the sign related to the door of the railway vehicle.

[0248] Also, in the second aspect of the present embodiment, on the premise of the above-described first aspect, the support system may include a second notification unit. The second notification unit is, for example, the above-described notification unit 1003. Specifically, the second notification unit is provided on the railway vehicle, and when the information regarding the diagnosis result indicates that there is an abnormality or a sign thereof related to the door, the second notification unit may notify the support facility outside the railway vehicle of the information indicating that there is an abnormality or a sign thereof related to the door. The support facility is, for example, the above-described support facility SF. And the first notification unit is provided in the support facility, and may notify the crew of the railway vehicle of the information regarding the measures to be taken against the abnormality or the sign related to the door in response to the notification from the second notification unit to the support facility.

[0249] As a result, the support system can utilize the knowledge of the support facility outside the railway vehicle and notify the crew of the railway vehicle of the information regarding the abnormality or the sign related to the door and the measures to be taken therefor. Therefore, the support system can more appropriately support the crew of the railway vehicle in taking measures against the abnormality or the sign related to the door of the railway vehicle.

[0250] Also, in the third aspect of the present embodiment, on the premise of the above-described second aspect, the support system may include an operation information acquisition unit and an operation information transmission unit. The operation information acquisition unit is, for example, the above-described operation information acquisition unit 1001. The operation information transmission unit is, for example, the above-described operation information transmission unit 1004. Specifically, the operation information acquisition unit is provided on the railway vehicle and may acquire information regarding the operation of the door. And the operation information transmission unit is provided on the railway vehicle and may transmit the information acquired by the operation information acquisition unit to the support facility.

[0251] As a result, the supporter at the support facility can specifically grasp the state regarding the operation of the doors of the railway vehicle by using the information transmitted from the railway vehicle. Therefore, the supporter at the support facility can propose more appropriate measures according to the state regarding the operation of the doors. Thus, the support system can more appropriately support the crew of the railway vehicle in taking measures against abnormalities and their signs regarding the doors of the railway vehicle.

[0252] Also, in the fourth aspect of the present embodiment, on the premise of the above-described third aspect, the support system may include a command transmission unit. The command transmission unit is, for example, the above-described acquisition command transmission unit 23. Specifically, the command transmission unit may be provided at the support facility and transmit a command for causing the operation information acquisition unit to acquire information regarding the operation of the doors to the railway vehicle.

[0253] As a result, for example, the supporter at the support facility can cause the railway vehicle side to acquire the information necessary for more appropriately grasping the state regarding the operation of the doors and transmit it to the support facility. Therefore, the supporter at the support facility can propose more appropriate measures according to the state regarding the operation of the doors. Thus, the support system can more appropriately support the crew of the railway vehicle in taking measures against abnormalities and their signs regarding the doors of the railway vehicle.

[0254] Also, in the fifth aspect of the present embodiment, on the premise of the above-described third aspect or fourth aspect, when the diagnosis information acquisition unit acquires information indicating that there is an abnormality or its sign regarding the doors, the operation information acquisition unit may automatically acquire information regarding the operation of the doors.

[0255] As a result, when a diagnostic result indicating an abnormality or a sign thereof related to the door is issued, the support system can acquire information regarding the operation of the door and transmit it to the support facility. Therefore, for example, when an abnormality or a sign thereof related to the door occurs, a supporter at the support facility can quickly obtain information regarding the operation of the door. Therefore, the support system can more quickly support the crew of the railway vehicle in taking measures against an abnormality or a sign thereof related to the door of the railway vehicle.

[0256] Further, in the sixth aspect of the present embodiment, on the premise of any one of the above-described third to fifth aspects, after it is determined that the information regarding the diagnostic result indicates an abnormality or a sign thereof related to the door, the operation information acquisition unit may acquire information regarding the operation of the door a plurality of times in time series. Further, the operation information transmission unit may transmit the information to the support facility each time the information regarding the operation of the door is acquired. And the first notification unit may notify the crew of the railway vehicle of information regarding measures against an abnormality or a sign thereof related to the door each time the information regarding the operation of the door is received at the support facility.

[0257] As a result, for example, a supporter at the support facility can grasp the state regarding the operation of the door after the crew of the railway vehicle has taken measures against an abnormality or a sign thereof related to the door, and can propose more appropriate measures. Therefore, the support system can more appropriately support the crew of the railway vehicle in taking measures against an abnormality or a sign thereof related to the door of the railway vehicle.

[0258] Further, in the seventh aspect of the present embodiment, on the premise of any one of the above-described second to sixth aspects, the second notification unit may notify the crew of the railway vehicle of information regarding measures against an abnormality or a sign thereof related to the door, and may also notify the support facility of information indicating an abnormality or a sign thereof related to the door.

[0259] As a result, the support system can, for example, more quickly provide information on simple measures corresponding to initial responses on the railway vehicle side, and then provide information on more appropriate measures utilizing the knowledge of the support facility. Therefore, the support system can more quickly and appropriately support the crew of the railway vehicle in taking measures against abnormalities and signs thereof related to the doors of the railway vehicle.

[0260] Also, in the eighth aspect of the present embodiment, the support device is mounted on the railway vehicle. The support device is, for example, the door control device 100. Also, the support device may be the vehicle control device 12 or the transmission device 16. Specifically, the support device includes a diagnostic information acquisition unit and a notification unit. The diagnostic information acquisition unit is, for example, the above-described diagnostic unit 1002. The notification unit is, for example, the above-described notification unit 1003. More specifically, the operation information acquisition unit acquires information regarding the diagnostic result of an abnormality related to the door of the railway vehicle. And when the information regarding the diagnostic result indicates that there is an abnormality or a sign thereof related to the door of the railway vehicle, the notification unit notifies the crew of the railway vehicle of information regarding measures against the abnormality or the sign related to the door.

[0261] As a result, the support device can complete, inside the railway vehicle, the process related to providing the crew with information regarding measures against the abnormality or the sign related to the door of the railway vehicle in response to the occurrence of the abnormality or the sign related to the door of the railway vehicle. Therefore, the support device can more quickly support the crew of the railway vehicle in taking measures against the abnormality or the sign related to the door of the railway vehicle.

[0262] Although the embodiments have been described in detail above, the present disclosure is not limited to such specific embodiments, and various modifications and changes are possible within the scope of the gist described in the claims.

Explanation of Reference Numerals

[0263] 1 Railway vehicle 2 Support device 3 User interface device 10 Higher-level device 12 Vehicle control device 16 Transmission device 18 Communication device 21 Vehicle-side information acquisition unit 22 Vehicle-side information notification unit 23 Acquisition command transmission unit 24 Treatment information acquisition unit 25 Treatment information notification unit 30 Motor 50 Locking device 60 DCS 70 DLS 80 Door 100 Door control device 200 Door drive mechanism 1001 Operation information acquisition unit 1002 Diagnosis unit 1003 Notification unit 1004 Operation information transmission unit SF Support facility SP Supporter SYS Support system

Claims

1. a diagnostic information acquisition unit that acquires information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; a first notification unit that notifies a train attendant of the railway vehicle of information regarding a measure to deal with the abnormality or the symptom of the abnormality, when the information regarding the diagnosis result indicates that there is an abnormality or a symptom of the abnormality, regarding the door. Support system.

2. a second notification unit that is provided in the railcar and that, when the information on the diagnosis result indicates that there is an abnormality or a symptom thereof related to the door, notifies a support facility outside the railcar of information indicating that there is an abnormality or a symptom thereof related to the door; the first notification unit is provided in the support facility, and in response to a notification from the second notification unit to the support facility, notifies a train attendant of the railway vehicle of information regarding a measure to be taken in response to an abnormality or a symptom thereof related to the door. The support system according to claim 1 .

3. an operation information acquisition unit provided in the railcar and acquiring information regarding the operation of the door; A motion information transmission unit is provided in the railcar and transmits information acquired by the motion information acquisition unit to the support facility. The support system according to claim 2.

4. a command transmission unit provided in the support facility and configured to transmit a command to the railcar to cause the operation information acquisition unit to acquire information regarding the operation of the door; The support system according to claim 3.

5. The operation information acquisition unit automatically acquires information regarding the operation of the door when the diagnosis information acquisition unit acquires information indicating that there is an abnormality or a symptom thereof regarding the door. The support system according to claim 3.

6. the operation information acquisition unit acquires information about the operation of the door a plurality of times in chronological order after it is determined that the information about the diagnosis result indicates an abnormality or a symptom thereof related to the door, the operation information transmission unit transmits information regarding the operation of the door to the support facility each time the information is acquired; the first notification unit notifies a train crew member of the railway vehicle of information regarding a measure to be taken for an abnormality or a symptom thereof related to the door every time information regarding the operation of the door is received at the support facility; 6. An assistance system according to any one of claims 3 to 5.

7. the second notification unit notifies a train attendant of the railway vehicle of information regarding a measure to be taken in response to the abnormality or a symptom of the abnormality with respect to the door, and notifies the support facility of information indicating the abnormality or a symptom of the abnormality with respect to the door.

6. An assistance system according to any one of claims 2 to 5.

8. An assistance device mounted on a railway vehicle, a diagnostic information acquisition unit that acquires information regarding a diagnosis result of an abnormality related to the door of the railway vehicle; and a notification unit that notifies a train crew member of the railway vehicle of information regarding a measure to deal with the door abnormality or the symptom thereof when the information regarding the diagnosis result indicates that there is an abnormality or a symptom thereof with respect to the door of the railway vehicle. Support equipment.

9. An assistance method executed by an assistance system, comprising: A diagnostic information acquisition step of acquiring information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; and a notification step of notifying a train attendant of the railway vehicle of information regarding a measure for dealing with the abnormality or the symptom of the abnormality, when the information regarding the diagnosis result indicates that there is an abnormality or a symptom of the abnormality with respect to the door of the railway vehicle. How to help.

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