Support device, support method, and program

Abstract

To provide a technology enabling support of more suitable maintenance regarding a door of a railroad vehicle.SOLUTION: A support device 2 includes: a diagnosis result acquirement unit 23 for acquiring information regarding a diagnosis result of abnormality regarding a door 80 of a railroad vehicle 1; and a diagnosis result notification unit 24 for notifying the analysis result so that contents of maintenance including at least one of maintenance method for the door 80 corresponding to the diagnosis result and adjustment amount of a subject portion of the maintenance based on information acquired by the diagnosis result acquirement unit 23.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present disclosure relates to an assistance device and the like. [Background technology]

[0002] For example, there is known a technique for diagnosing an abnormality in a door and informing a target portion or part for maintenance based on the diagnosis result (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-82993 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, simply notifying the areas and parts to be maintained does not allow the customer to understand the specific measures to be taken to respond to door abnormalities and their symptoms, such as the maintenance method or the amount of adjustment to be made if adjusting the areas to be maintained.

[0005] In view of the above problems, an object of the present invention is to provide a technology that can support more appropriate maintenance of railway vehicle doors. [Means for solving the problem]

[0006] In order to achieve the above object, in one embodiment of the present disclosure, an acquisition unit that acquires information regarding a diagnosis result of an abnormality related to a door of a railway vehicle; and a notification unit that notifies information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result based on the information acquired by the acquisition unit. A support device is provided.

[0007] In another embodiment of the present disclosure, An acquisition step in which the support device acquires information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; a notification step of notifying, by the support device, information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result, based on the information acquired in the acquisition step; Ways of assistance are provided.

[0008] In still another embodiment of the present disclosure, On the computer, An acquisition step of acquiring information regarding a diagnosis result of an abnormality related to a door of the railcar; a notification step of notifying information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result, based on the information acquired in the acquisition step; The program is provided. Effect of the Invention

[0009] According to the above-described embodiment, it is possible to support more appropriate maintenance of railway vehicle doors. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a block diagram showing an example of a configuration related to the opening and closing operation of a door of a railway vehicle. [Diagram 2] 1 is a schematic diagram showing a first example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Diagram 3] 1 is a schematic diagram showing a first example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Figure 4] 1 is a schematic diagram showing a first example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Diagram 5] 1 is a schematic diagram showing a first example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Figure 6] 1 is a schematic diagram showing a first example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Figure 7] FIG. 11 is a schematic diagram showing a second example of an arrangement of doors and door drive mechanisms of a railway vehicle. [Figure 8] FIG. 13 is a diagram illustrating an example of a push back mechanism. [Figure 9] FIG. 4 is a diagram showing a first example of the positional relationship between a DCS and a DCS abutment portion. [Figure 10] 13 is a diagram showing a second example of the positional relationship between the DCS and the DCS abutment portion. FIG. [Figure 11] FIG. 13 is a diagram showing a third example of the positional relationship between the DCS and the DCS abutment portion. [Figure 12] FIG. 13 is a diagram showing a fourth example of the positional relationship between the DCS and the DCS abutment portion. [Figure 13] FIG. 1 is a diagram illustrating a configuration of an example of a maintenance support system. [Figure 14] FIG. 2 is a diagram illustrating a hardware configuration of an example of a support device. [Figure 15] FIG. 1 is a diagram illustrating a functional configuration of an example of a maintenance support system. [Figure 16] FIG. 13 is a diagram showing a first example of a display screen for the diagnosis results of an abnormality diagnosis regarding a door. [Figure 17] FIG. 13 is a diagram showing a first example of a display screen for the diagnosis results of an abnormality diagnosis regarding a door. [Figure 18] 6 is a diagram showing a first example of a motor current during a door opening operation or closing operation when an abnormality occurs in the travel resistance of the door; FIG. [Figure 19] 11 is a diagram showing a second example of a motor current during opening and closing of the door when an abnormality occurs in the travel resistance of the door. FIG. [Figure 20] 13 is a diagram illustrating a third example of a motor current during a door opening operation or closing operation when an abnormality occurs in the travel resistance of the door. FIG. [Figure 21] 13 is a diagram illustrating a third example of a motor current during a door opening operation or closing operation when an abnormality occurs in the travel resistance of the door. FIG. [Figure 22] FIG. 11 is a diagram illustrating a first example of the door position and the DCS signal change over time during the door closing operation in the diagnostic mode. [Diagram 23]FIG. 11 is a diagram illustrating a second example of the door position and the DCS signal change over time during the door closing operation in the diagnostic mode. [Figure 24] FIG. 11 is a diagram illustrating a third example of the door position and the DCS signal change over time during the door closing operation in the diagnostic mode. [Diagram 25] FIG. 13 is a diagram showing a third example of a display screen showing the diagnosis results of an abnormality diagnosis regarding a door. [Figure 26] FIG. 13 is a diagram showing a third example of a display screen showing the diagnosis results of an abnormality diagnosis regarding a door. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0012] [Door opening and closing operation configuration] An example of a configuration relating to the opening and closing operation of a door 80 of a railway vehicle 1 will be described with reference to Figs.

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

[0014] The railcar 1 may be a single-car train consisting of one car, or a multi-car train consisting of a plurality of cars connected in a daisy-chain.

[0015] 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 source 150, an input contactor 151, and a door drive mechanism 200.

[0016] The higher-level 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 a multiple-car train, one vehicle control device 12 is provided in the driver's cab of the first car and one in the conductor's cab of the last car. Also, when the railway vehicle is a single-car train, one vehicle control device 12 is provided in the driver's cab and the conductor's cab at the front and rear ends of the railway vehicle 1 (car).

[0018] The functions of the vehicle control device 12 are realized by any hardware or a combination of any hardware and software. The vehicle control device 12 is mainly configured with a computer including, for example, a central processing unit (CPU), a memory device, an auxiliary storage device, and an interface device for inputting and outputting with the outside. The memory device is, for example, a static random access memory (SRAM). The auxiliary storage device is, for example, an electrically erasable programmable read only memory (EEPROM) or a 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. The interface device may also include an external interface for connecting to an external recording medium. Thereby, for example, in a manufacturing process, a worker 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 of the vehicle control device 12. The program and various data used for processing related to the control of the operation of the railway vehicle 1 may also be downloaded from outside the railway vehicle 1 through the communication interface. The interface device may also include a plurality of different types of interface devices according to the type of communication line to be connected.

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

[0020] A wiring 13 that transmits an interlock signal is connected to the vehicle control device 12. Both ends of the wiring 13 are connected to the vehicle control device 12, and the wiring 13 is provided with a DCS 60 and a DLS 70. When at least one of the DCS 60 and the DLS 70 is in an off state, the wiring 13 is in a non-conductive state, and in this case, the interlock signal input to the vehicle control device 12 is at an L (low) level. On the other hand, when both the DCS 60 and the DLS 70 are in an on state, the wiring 13 is in a conductive state, and in this case, the interlock signal input to the vehicle control device 12 is at an H (high) level. When the interlock signal is at an H level, the vehicle control device 12 determines that the railway vehicle 1 is in a runnable state. Therefore, when the interlock signal transitions from an L level to an H level, the railway vehicle 1 is allowed to run.

[0021] The door opening / closing operation device 14 is used by a crew member (e.g., a conductor) of the railway vehicle 1 to open and close 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 an L level to an H level to the vehicle control device 12. Also, 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 an H level to an L level to the vehicle control device 12.

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

[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 signals SDR). In addition, the transmission device 16 may receive various signals transmitted from each door control device 100 to the vehicle control device 12 (output signals SD), 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 AC driving power. The motor 30 may be a linear motor driven by three-phase AC driving power. The motor 30 may also be a DC motor driven by DC.

[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 rotating shaft of the motor 30. The encoder 31 detects, for example, the rotational position (rotation angle) during one rotation of the rotating shaft of the motor 30 and the number of rotations. The encoder 31 outputs a detection signal including information on the rotational position of the rotating shaft of the motor 30, and the detection signal is taken into the door control device 100. In this way, the door control device 100 can obtain position information of the door 80 in the opening and closing direction based on the signal of the encoder 31. In other words, the information included in the signal of the encoder 31 corresponds to position information of the door 80.

[0026] The door control device 100 may obtain 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 obtains the position information of the door 80 based on an estimated value of the rotational position of the motor 30, which is generated in the process of controlling the motor 30. The door control device 100 may also obtain the position information of the door 80 based on the output of a distance sensor that can directly measure the position of the door 80. In these cases, the encoder 31 may be omitted.

[0027] The current sensor 32 detects the current of the three-phase AC driving 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 power lines out of three power lines of U-phase, V-phase, and W-phase that connect 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. The current sensor 32 may also include a current sensor that detects the current of the remaining power line. For example, as shown in FIG. 1, the current sensor 32 may be built into the door control device 100 or may be provided outside the door control device 100. Detection signals of the current sensors 32 (current sensors 32A and 32B) are taken in by a normal system control unit 110 and a standby system control unit 120, which will be 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 bidirectional 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. This causes the lock pin 230, which will be described later, to move in the unlocking direction, unlocking the door 80. In addition, since the locking device 50 is a self-retaining type, the coil 52 maintains its protruding state from the housing even after the energization of the coil 52 is released. This allows the door 80 to remain unlocked.

[0030] When the coil 53 of the locking device 50 is energized by the door control device 100, the pin 51 is retracted into the housing of the locking device 50. This causes the lock pin 230, which will be described later, to move in the locking direction, and the door 80 is locked. In addition, since the locking device 50 is a self-retaining type, the pin 51 remains retracted into the housing even after the coil 53 is de-energized. This allows the door 80 to remain locked.

[0031] The DCS 60 detects the open / closed state of the door 80 of the railcar 1. Specifically, the DCS 60 detects a fully closed state of the door 80 of the railcar 1. The DCS 60 is realized, for example, by a limit switch that is pressed by the action of the door 80 when the door 80 moves to the fully closed position.

[0032] The DCS 60 includes fixed contacts 61A1 and 61A2, fixed contacts 61B1 and 61B2, and a movable contact 62.

[0033] The fixed contacts 61A1 and 61A2 are disposed in series with the wiring 13 so as to divide the wiring 13. Hereinafter, the fixed contacts 61A1 and 61A2 may be referred to as "A contacts" of the DCS 60 for convenience.

[0034] The fixed contacts 61B1, 61B2 are arranged in series with the wiring 101 in such a manner that they divide the wiring 101, both ends of which are connected to the door control device 100. This allows the door control device 100 to grasp the on / off state of the DCS 60 based on H-level signals and L-level signals which indicate the conductive and non-conductive states of the fixed contacts 61B1, 61B2, respectively. Hereinafter, the fixed contacts 61B1, 61B2 may be referred to as the "B contacts" of the DCS 60 for convenience.

[0035] The movable contact 62 moves along the axial direction (the up-down direction in FIG. 1) to bring either the A contact (fixed contacts 61A1, 61A2) or the B contact (fixed contacts 61B1, 61B2) of the DCS 60 into conduction. When no external force is applied to the DCS 60, the movable contact 62 brings the B contact into conduction, i.e., the B contact is ON and the A contact is OFF. On the other hand, when the movable contact 62 is pressed by the action of the door 80, as described later, the A contact is turned ON and the B contact is turned OFF with the A contact being brought into conduction by the movable contact 62. Then, when the movable contact 62 returns to a state where it is not pressed by the action of the door 80, the DCS 60 returns to a state where the B contact is turned ON and the A contact is OFF with the B contact being brought into conduction by the movable contact 62.

[0036] For example, the door control device 100 can grasp the on / off state of the B contact of the DCS 60 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 DCS 60 by inverting the signal input through the wiring 101.

[0037] The DLS 70 detects whether or not the door 80 is locked. Specifically, it detects the locked state of the door 80. The DLS 70 is realized, for example, by a limit switch that is 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 DLS 70 includes fixed contacts 71A1 and 71A2, fixed contacts 71B1 and 71B2, and a movable contact 72.

[0039] The fixed contacts 71A1 and 71A2 are disposed in series with the wiring 13 so as to divide the wiring 13. Hereinafter, the fixed contacts 71A1 and 71A2 may be referred to as "A contacts" of the DLS 70 for convenience.

[0040] Fixed contacts 71B1, 71B2 are arranged in series with wiring 102 in a manner that divides wiring 102, both ends of which are connected to the door control device 100. This allows the door control device 100 to grasp the on / off state of DLS 70 based on H-level signals and L-level signals indicating the conductive and non-conductive states of fixed contacts 71B1, 71B2, respectively. Hereinafter, fixed contacts 71B1, 71B2 may be referred to as the "B contacts" of DLS 70 for convenience.

[0041] The movable contact 72 moves along the axial direction (the up-down direction in FIG. 1) to bring either the A contact (fixed contacts 71A1, 71A2) or the B contact (fixed contacts 71B1, 71B2) of the DLS 70 into conduction. When no external force is applied, the DLS 70 is in a state where the movable contact 72 brings the B contact into conduction, that is, where the B contact is turned on and the A contact is turned off. On the other hand, when the movable contact 72 is pressed by the action of the lock pin 230, the A contact is turned on and the B contact is 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 DLS 70 returns to a state where the B contact is turned on and the A contact is turned off.

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

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

[0044] The door 80 is a double-hinged sliding door provided in openings (hereinafter, "door openings") on the left and right sides of the body of the railcar 1. The door 80 includes door panels 80A and 80B.

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

[0046] Door end rubbers 81A and 81B are provided at the portions of the door panels 80A and 80B that abut against each other when the door 80 is in a fully closed state. The door end rubbers 81A and 81B are provided in the ranges from the upper end to the lower end at the joints of the door panels 80A and 80B.

[0047] The door control device 100 controls the opening and closing operations of the doors 80. The door control device 100 is provided for each of the multiple doors 80 provided on the railway vehicle 1.

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

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

[0050] The normal system control unit 110 controls the opening and closing operations of the door 80. The normal system 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 lock / unlock drive unit 117.

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

[0052] The communication unit 112 performs bidirectional 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] Furthermore, the input signal detection unit 113 may perform various processes based on the detected signal.

[0055] For example, when the input signal detection unit 113 detects a predetermined signal from among the input signals, it sends the predetermined signal to the sequence unit 114 and the motor control unit 115. That is, the input signal detection unit 113 extracts (selects) a signal required for the control of the sequence unit 114 and the motor control unit 115 from the multiple types of input signals, and sends it to the sequence unit 114 and the motor control unit 115. This allows the sequence unit 114 and the motor control unit 115 to appropriately execute sequence control and drive control of the motor 30, which will be described later, based on the signal input from the input signal detection unit 113.

[0056] The sequence unit 114 performs sequence control regarding the opening and closing operation of the door 80 based on a signal input from the input signal detection unit 113. Specifically, the sequence unit 114 performs sequence control regarding the opening and closing operation of the door 80 in response to a stop signal, an open command, a close command, and the like from the vehicle control device 12. In addition, the sequence unit 114 performs sequence control regarding the opening and closing operation of the door 80 while grasping the open / closed state of the door 80, the position of the door 80 in the opening and closing direction, whether the door 80 is locked, and the like, using signals from the encoder 31, the DCS 60, the DLS 70, and the like.

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

[0058] The motor drive unit 116 generates and outputs three-phase AC power for driving the motor 30, using DC power input from the power supply 150. 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 motor drive unit 116 has two DC power lines on its input side connected to the power supply 150 via an input contactor 151, and three power lines on its output side connected to the motor 30 via a switching circuit unit 130.

[0059] The locking / unlocking driving unit 117 energizes the coils 52, 53 of the locking device 50 in response to a locking command or an unlocking command input from the sequence unit 114, and drives the locking device 50 (pin 51) in the locking or unlocking direction of the door 80. The locking / unlocking driving unit 117 has DC power lines of positive and negative lines on its input side connected to a power source 150 through an input contactor 151. The locking / unlocking driving unit 117 has two sets of DC power lines of positive and negative lines on its output side, one set of which is connected to the coil 52 through a switching circuit unit 140, and the other set of which is connected to the coil 53 through the switching circuit unit 140. For example, the locking / unlocking driving unit 117 has a semiconductor switch capable of switching between conduction and non-conduction between the DC power line on the input side and each of the DC power lines of one set and the DC power line of the other set on the output side, and switches the semiconductor switch between on and off. Specifically, when an unlock command is input from the sequence unit 114, the lock / unlock drive unit 117 may transition the state between the DC power line on the input side and one set of DC power lines on the output side to a conductive state, and energize the coil 52 of the locking device 50 through the switching circuit unit 140. Also, when a lock command is input from the sequence unit 114, the lock / unlock drive unit 117 may transition the state between the DC power line on the input side and the other set of DC power lines to a conductive state, and energize the coil 53 of the locking device 50 through the switching circuit unit 140.

[0060] The standby control unit 120 is configured to be able to execute control related to the opening and closing operation of the door 80, and fulfills a backup function for the normal control unit 110. Thus, the door control device 100, by being provided with the standby control unit 120 in addition to the normal control unit 110, can achieve redundancy of the control system related to the opening and closing operation of the door 80. Specifically, when an abnormality occurs in the normal control unit 110, the standby control unit 120 controls the opening and closing operation of the door 80 in place of the normal 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 lock / unlock drive unit 127.

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

[0063] The switching circuit unit 130 switches between a state in which the motor driving unit 116 and the motor 30 are electrically connected and a state in which the motor driving unit 126 and the motor 30 are electrically connected. Specifically, the switching circuit unit 130 has its input side connected to the three-phase AC output power lines of the motor driving units 116 and 126, and its output side connected to the three-phase AC input power line extending from the motor 30. The switching circuit unit 130 switches between a state in which the output power line of the motor driving unit 116 and the input power line of the motor 30 are electrically connected to each other and a state in which the output power line of the motor driving unit 126 and the input power line of the motor 30 are electrically connected to each other.

[0064] When the normal system control unit 110 controls the opening and closing operation of the door 80, the switching circuit unit 130 maintains the state in which the motor drive unit 116 and the motor 30 are electrically connected. On the other hand, when an abnormality occurs in the normal system control unit 110 and the state transitions to a state in which the opening and closing operation of the door 80 is controlled by the standby system control unit 120, the switching circuit unit 130 switches to a state in which the motor drive unit 126 and the motor 30 are electrically connected.

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

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

[0067] The power source 150 supplies DC power of 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 source 150 includes, for example, a battery and an auxiliary power supply. 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 generates DC power based on 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 a power circuit between the power source 150 and various devices including the door control device 100, and switches on / off the power supply to the 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 equivalent to turning on the power in the driver's cab of the railway vehicle 1. This starts the power supply to the various devices of the railway vehicle 1 including the door control device 100, and the railway vehicle 1 starts up. The input contactor 151 is also opened, for example, in response to a predetermined operation equivalent to turning off the power in the driver's cab of the railway vehicle 1. This stops (shuts off) the power supply to the various devices of the railway vehicle 1 including the door control device 100, and the railway vehicle 1 stops.

[0069] The door drive mechanism 200 transmits the power of the motor 30 to the door 80 to open and close the door 80. The door drive mechanism 200 also realizes the locked and unlocked states 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 80 A. The rack 210 includes a rack portion 211 and a connecting portion 212.

[0072] The rack portion 211 is a member extending in the front-rear 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 above the door opening of the railway vehicle 1 (car body) and slightly above the rotation shaft of the motor 30, which is disposed so that the rotation shaft is along the width direction (left-right direction) of the railway vehicle 1. This allows a pinion gear that is disposed coaxially with the rotation shaft of the motor 30 to engage with the rack gear 211A on the lower surface of the rack portion 211. Therefore, the rack portion 211 can be moved in the front-rear 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 of the door panel 80A, and the rack portion 211 is connected to the upper end thereof. As a result, the door panel 80A moves in the fore-and-aft 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, thereby realizing the opening and closing operation of the door 80. At this time, the movement of the door panel 80A in the fore-and-aft direction is guided by a slide rail (hereinafter referred to as the "door rail").

[0074] The connecting portion 212 is provided with a DCS abutment portion 213 .

[0075] 2 and 3, when the door panels 80A, 80B transition to a fully closed state in which they are completely closed, the DCS abutment portion 213 abuts against the movable contact 62 of the DCS 60, and the movable contact 62 is pressed. This presses the movable contact and turns on the DCS 60. On the other hand, as shown in FIGS. 4 to 6, when the door panel 80A transitions to a state other than the fully closed state in which it is completely closed, the DCS abutment portion 213 transitions to a state where it does not abut against 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 abutment portion 223. 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 will be collectively referred to as a push back mechanism PBM.

[0077] The rack portion 221 is a member extending in the fore-and-aft 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 above the door opening of the railway vehicle 1 and slightly below the rotation shaft of the motor 30. This allows a pinion gear that is disposed coaxially with the rotation shaft of the motor 30 to 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 fore-and-aft 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 of the connecting portion 222. As a result, the door panel 80B moves in the fore-and-aft direction of the railcar 1 in conjunction with the movement of the rack portion 221 in accordance with the rotation of the motor 30, thereby realizing the opening and closing operation of the door 80. At this time, the movement of the door panel 80B in the fore-and-aft direction is guided 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 it from below, so that the racks 210, 220 can be moved in opposite directions in response to the rotation of the motor 30. Therefore, the opening and closing operations of the two door panels 80A, 80B can be realized with one motor 30.

[0080] An inclined portion 222A is provided at an upper end of the connecting portion 222, and is inclined downward toward the center of the door opening in the front-rear direction of the railway car 1.

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

[0082] 7 and 8, when the push back mechanism PBM is provided, the lock pin abutment portion 223 is provided separately from the rack portion 221 and the connecting portion 222. In this case, the lock pin abutment portion 223 is provided adjacent to the rack portion 221 and the connecting portion 222 in 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 in the upper surface of the lock pin abutment portion 223. When the door 80 is locked, the lower end of the lock pin 230 (a pin portion 231 described below) is inserted into the lock hole 223A.

[0084] The spring member 224 is disposed between the upper portion of the connecting portion 222 and the lock pin abutment portion 223 so as to abut against both of them. Specifically, the spring member 224 is adjacent to the upper portion of the connecting portion 222 in the opening direction of the door panel 80B and adjacent to the lock pin abutment 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 in which the support rod 225 is inserted through the central axis portion of the coil spring. As a result, 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 abutment portion 223 is varied between zero and a predetermined value Dmax, and when the distance between the connecting portion 222 and the lock pin abutment portion 223 is at the predetermined value Dmax, the spring member 224 is in a state where it is contracted from its natural length. As a result, the elastic force (reaction force) of the spring member 224 maintains the distance between the connecting portion 222 and the lock pin abutment portion 223 at the predetermined value Dmax.

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

[0086] The elastic force of the spring member 224 is set to an elastic force such that, even if the lower end of the pin portion 231 is inserted into the lock hole 223A while a foreign object is caught between the door end rubbers 81A and 81B when the door 80 is closed, the passenger can relatively easily pull out the foreign object. As a result, even if a foreign object is caught in the door 80 (between the door end 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, when the door 80 is in the locked state, the passenger can move the door panel 80B in the opening direction until the distance between the above-mentioned connecting portion 222 and the lock pin abutment portion 223 becomes approximately zero.

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

[0088] The base end of the rod portion 225A in the front-rear direction is fixed to the connecting portion 222, and the tip end is connected to the expanded diameter portion 225B. The rod portion 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 abutment portion 223 in the front-rear direction.

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

[0090] Furthermore, the pushback mechanism PBM may have a configuration or structure different from that described above, so long as the elastic member is configured to be expandable and contractible in response to the thrust acting on the door 80 from the door drive mechanism 200 when the door 80 is in the locked state.

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

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

[0093] The locking device abutment portion 232 is attached to the upper end of the pin portion 231, and is provided so as to extend from the connecting portion with the pin portion 231 in the horizontal direction, specifically, in the opposite direction to the door opening in the longitudinal direction of the railway vehicle 1. The locking device 50 is fixedly disposed below the locking device abutment portion 232, and the upper end of the pin 51 of the locking device 50 abuts against the lower surface of the locking device abutment portion 232. As a result, when the pin 51 of the locking device 50 protrudes upward, the locking device abutment portion 232 is lifted upward, and when the pin 51 of the locking device 50 is retracted downward, the locking device abutment portion 232 moves downward under the weight of the lock pin 230.

[0094] 3 to 6, when the pin 51 of the locking device 50 is in a protruding state, the lower end of the pin portion 231 connected to the locking device abutment 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, the rack 220 can move without being affected by the arrangement of the lock pin 230, and the door 80 (door panels 80A, 80B) is in a state where it can move in the opening and closing direction.

[0095] 2, when 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. When the door 80 is fully closed, the pin portion 231 is located closer to the lock pin abutment portion 223 than the inclined portion 222A in the front-rear direction of the railcar 1. Therefore, when the pin 51 of the locking device 50 is retracted when the door 80 is fully closed, the locking device abutment portion 232 moves downward, and the pin portion 231 engages with the lock hole 223A (recess) of the rack 220. This restricts the movement of the rack 220 and restricts the rotation of the pinion gear engaged with the rack gear of the rack 220, resulting in restricting the movement of the rack 210 having the rack gear 211A engaged with the pinion gear. Therefore, the movement of the door panels 80A, 80B connected to the racks 210, 220 is restricted, and the door panels 80A, 80B are locked.

[0096] Hereinafter, the mechanism for realizing the locked state of the door 80, including the lock pin abutment portion 223 and the lock pin 230, as shown in Fig. 2, will be collectively referred to as the lock mechanism portion LCM. In addition, as shown in Fig. 7, when a push back mechanism PBM is provided, the lock mechanism portion LCM includes the push back mechanism PBM (the spring member 224 and the support rod 225).

[0097] [Positional relationship between DCS and DCS contact part] Next, changes in the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is closed and opened will be described with reference to FIGS.

[0098] Fig. 9 is a diagram showing a first example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 10 is a diagram showing a second example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 11 is a diagram showing a third example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 12 is a diagram showing a fourth example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Specifically, Figs. 9 to 12 are diagrams showing in chronological order the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is closing or opening.

[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 an attachment portion 213E.

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

[0101] The contact portion 213B is a portion that comes into contact with the movable contact 62 of the DCS 60 when the door 80 is in a fully closed state. The contact portion 213B is disposed between the main body portion 213A and the DCS 60 (movable contact 62) in the front-rear direction of the railway vehicle 1 or in the opening / closing direction of the door 80.

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

[0103] The spring portion 213D is disposed between the main body portion 213A and the contact portion 213B in a form wound around the connection portion 213C. This allows, together with the function of the main body portion 213A, the distance between the contact portion 213B and the main body portion 213A in the longitudinal direction of the railcar 1 or in the opening / closing direction of the door 80 to be maintained at a predetermined value shorter than the natural length of the spring portion 213D when the contact portion 213B is not in contact with the DCS 60.

[0104] The mounting portion 213E is provided on the main body portion 213A, and is used to mount the DCS abutment portion 213 on the door 80 side (connecting portion 212). For example, the mounting portion 213E is provided with an elongated hole that extends in the front-rear direction of the railcar 1 or in the opening / closing direction of the door 80 and penetrates in the left-right direction. Then, two bolts BLT are screwed into corresponding screw holes (female threads) of the connecting portion 212 in a manner spaced apart in the front-rear direction through the elongated hole, thereby fixing the DCS abutment portion 213 to the connecting portion 212. This allows, for example, in a manufacturing process, an operator to adjust the mounting position of the DCS abutment portion 213 in the front-rear direction of the railcar 1 or in the opening / closing direction of the door 80 within a range defined by the length of the elongated 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 abutment portion 213 usually changes in the order of Figures 9, 10, and 11. Furthermore, if the door 80 continues to close from the state shown in Figure 11, it may reach the state shown in Figure 12.

[0106] Fig. 9 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 at the timing when the abutment portion 213B abuts against 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 abutment 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 abutment portion 213B during the closing operation of the door 80 and the DCS 60 is switched from OFF to ON. Fig. 11 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 at the timing when the movable contact 62 of the DCS 60 is pushed entirely into the housing of the DCS 60 by the abutment portion 213B during the closing operation of the door 80 and the abutment portion 213B comes into contact with the housing of the DCS 60. Fig. 12 shows the positional relationship between DCS 60 and DCS abutment portion 213 when door 80 moves further in the closing direction from the state in Fig. 11 and the distance between abutment portion 213B and main body portion 213A reaches the shortest length of spring portion 213D. When transitioning from the state in Fig. 11 to the state in Fig. 12, abutment portion 213B abuts against the housing of DCS 60 and cannot move, so spring portion 213D contracts as door 80 moves in the closing direction.

[0107] Furthermore, when the door 80 is opened, the positional relationship between the DCS 60 and the DCS abutment portion 213 normally changes in the order of Figures 11, 10, and 9. When the door 80 is closed and the positional relationship is as shown in Figure 12, the positional relationship changes in the order of Figures 12, 11, 10, and 9.

[0108] Fig. 12 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 when the movable contact 62 is fully pushed into the housing of the DCS 60 and the distance between the abutment portion 213B and the main body portion 213A is the shortest length of the spring portion 213D during the opening operation of the door 80. Fig. 11 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 when the movable contact 62 is fully pushed into the housing of the DCS 60 and the distance between the abutment portion 213B and the main body portion 213A is the natural length of the spring portion 213D during the opening operation of the door 80. When transitioning from the state of Fig. 12 to the state of Fig. 11, the position of the abutment portion 213B does not change in the front-rear direction of the railway vehicle 1 or in the opening / closing direction of the door 80, and the spring portion 213D, which is contracted to the shortest length in the state of Fig. 12, expands. Fig. 10 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 at the timing when the restriction on the movable contact 62 by the abutment portion 213B is gradually released during the opening operation of the door 80, the movable contact 62 of the DCS 60 comes out from the housing of the DCS 60, and the DCS 60 switches from on to off. Fig. 9 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 at the timing when the restriction on the movable contact 62 by the abutment portion 213B is completely released during the opening operation of the door 80, and the movable contact 62 of the DCS 60 protrudes to the maximum extent from the housing of the DCS 60. When transitioning from the state of Fig. 11 to the states of Figs. 10 and 9, the distance in the front-rear direction between the abutment portion 213B and the main body portion 213A is maintained at the maximum value within the range in which the abutment portion 213B can move relative to the main body portion 213A, and the movable contact 62 gradually comes out from inside the DCS 60 in accordance with the movement of the door 80 in the opening direction. This is because the movable contact 62 is biased so as to extend outside the housing of the DCS 60.

[0109] [Maintenance support system] Next, the maintenance support system SYS according to this embodiment will be described with reference to FIG.

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

[0111] The maintenance support system SYS performs a diagnosis of abnormalities regarding the door 80 (hereinafter referred to as "abnormality diagnosis") and supports maintenance regarding the door 80 by notifying the user of the diagnosis results so that the user can understand the contents of the maintenance corresponding to the diagnosis results.

[0112] An abnormality related to the door 80 includes a comprehensive or individual abnormality of multiple functional items necessary for the operation of the door 80. Furthermore, an abnormality related to the door 80 includes, for example, a relatively minor abnormality in which the functions necessary for the operation of the door 80 are not impaired but deviate from a normal state, to a severe abnormality in which a part or all of the functions necessary for the operation of the door 80 are impaired. A severe abnormality related to the door 80 corresponds to a breakdown related to the door 80. Furthermore, an abnormality related to the door 80 includes, for example, an abnormality (deterioration) that represents a state in which the functions of multiple functional items of the door 80 have irreversibly deteriorated, and an abnormality that represents a state in which the functions have reversibly deteriorated.

[0113] The abnormality diagnosis may include, for example, a diagnosis of the presence or absence of an abnormality, a diagnosis of the degree of the abnormality (degree of abnormality), etc. The degree of abnormality may include a degree of deterioration. Furthermore, the abnormality diagnosis may include a diagnosis of the remaining life. Furthermore, the abnormality diagnosis may include a diagnosis of the presence or absence of a symptom of an abnormality.

[0114] As shown in FIG. 13, the maintenance support system SYS includes a support device 2, a user interface (UI) device 3, a transmission device 16, and a door control device 100.

[0115] The support device 2 is communicatively connected to the transmission device 16, and transmits a command to the door control device 100 via the transmission device 16 to cause the door control device 100 to execute an abnormality diagnosis on the door 80. This allows the support device 2 to obtain information on the diagnosis result of the abnormality diagnosis on the door 80 from the door control device 100 via the transmission device 16.

[0116] The support device 2 may be capable of communicating directly with the door control device 100 without going through the transmission device 16.

[0117] The support device 2 is also communicably connected to the UI device 3, and notifies the user of the diagnosis result of the abnormality diagnosis regarding the door 80 through the UI device 3.

[0118] For example, the assistance device 2 is mounted on the railway vehicle 1. In this case, the assistance device 2 is, for example, a vehicle control device 12. This allows a user to operate the assistance device 2 from a driver's cab or a conductor's room of the railway vehicle 1. The assistance device 2 may also be provided in a facility outside the railway vehicle 1. In this case, the assistance device 2 may be a server device with a relatively high processing capacity, or a terminal device with a relatively low processing capacity, as long as the necessary processing capacity is ensured. The server device may be, for example, a cloud server, an on-premise server, or an edge server. The terminal device may be, for example, a fixed terminal device such as a desktop PC (Personal Computer), or may be, for example, a portable terminal device (mobile terminal) such as a smartphone, a tablet terminal, or a laptop computer.

[0119] When the assistance device 2 is provided outside the railway vehicle 1, the assistance device 2 and the transmission device 16 are communicatively connected through a predetermined communication line outside the railway vehicle 1. The predetermined communication line includes, for example, a wide area network (WAN) such as a mobile communication network terminated in a base station or a satellite communication network using a communication satellite. The predetermined communication line may also include, for example, a local network provided in a station or a vehicle depot. The predetermined communication line may also include, for example, a short-distance communication line based on a predetermined communication standard such as Bluetooth (registered trademark) or WiFi.

[0120] The function of diagnosing an abnormality in the door 80 may be transferred from the door control device 100 to the support device 2. In this case, the support device 2 can acquire measurement data required for diagnosing an abnormality in the door 80 and acquire the measurement data from the door control device 100 to perform an abnormality diagnosis in the door 80. The function of the support device 2 may be integrated into the door control device 100. In this case, the support device 2 is provided for each of the multiple door control devices 100 provided in the railway vehicle 1.

[0121] The UI device 3 is used by a user of the maintenance support system SYS. Under the control of the support device 2, the UI device 3 notifies the user of the diagnosis result of the abnormality diagnosis regarding the door 80.

[0122] The UI device 3 is, for example, a terminal device. The terminal device may be, for example, a stationary terminal device such as a desktop PC, or may be, for example, a portable terminal device (mobile terminal) such as a smartphone, a tablet terminal, or a laptop computer. Furthermore, when the assistance device 2 is mounted on the railway vehicle 1, the UI device 3 may be similarly mounted on the railway vehicle 1. For example, when the assistance device 2 is a vehicle control device 12, the UI device 3 is disposed in a driver's cab or a conductor's cab of the railway vehicle 1. This allows the user to check the diagnosis result of the abnormality diagnosis regarding the door 80 in the driver's cab or the conductor's cab of the railway vehicle 1.

[0123] When the UI device 3 is provided outside the railway vehicle 1, the assistance device 2 and the UI device 3 are communicatively connected through a predetermined communication line outside the railway vehicle 1. The predetermined communication line includes, for example, a wide area network (WAN) such as a mobile communication network terminated in a base station or a satellite communication network using a communication satellite. The predetermined communication line may also include, for example, a local network provided in a station or a vehicle depot. The predetermined communication line may also include, for example, a short-distance communication line based on a predetermined communication standard such as Bluetooth (registered trademark) or WiFi.

[0124] The functions of the UI device 3 may be integrated into the support device 2 .

[0125] [Hardware configuration of support device and UI device] Next, the hardware configuration of the support device 2 and the UI device 3 will be described with reference to FIG.

[0126] FIG. 14 is a diagram illustrating a hardware configuration of an example of the support device 2. As shown in FIG.

[0127] The hardware configuration of the UI device 3 may be the same as that of the support device 2. Therefore, illustration and description of the hardware configuration of the UI device 3 will be omitted, and FIG. 14 and the description of the hardware configuration of the support device 2 will be used.

[0128] The functions of the support device 2 are realized by any hardware or a combination of any hardware and software. 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 calculation device 2E, a communication interface 2F, an input device 2G, a display device 2H, and a sound output device 2I. These components are connected to each other so as to be able to communicate with each other via a bus BS, for example.

[0129] 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. This allows the support device 2 to read various data used in processing through the recording medium 2Aa, store the data in the auxiliary storage device 2B, and install programs that realize various functions.

[0130] The support device 2 may obtain various data and programs used in the processing from an external device through the communication interface 2F.

[0131] The auxiliary storage device 2B stores various installed programs, as well as files and data necessary for various processes. The auxiliary storage device 2B includes, for example, a hard disk drive (HDD), a solid state drive (SSD), an EEPROM, a flash memory, and the like.

[0132] When an instruction to start a program is received, the memory device 2C reads out and stores the program from the auxiliary storage device 2B. The memory device 2C includes, for example, a dynamic random access memory (DRAM) or an SRAM.

[0133] 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 in accordance with the programs.

[0134] The high-speed calculation device 2E works in conjunction with the CPU 2D to perform calculation processing at a relatively high speed. The high-speed calculation device 2E includes, for example, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), or a field-programmable gate array (FPGA).

[0135] Incidentally, the high speed calculation device 2E may be omitted depending on the required calculation processing speed.

[0136] The communication interface 2F is used as an interface for communicatively connecting to other devices different from the support device 2. This allows the support device 2 to communicate with, for example, the UI device 3 and the transmission device 16 through the communication interface 2F. In addition, the communication interface 2F may have multiple types of communication interfaces in accordance with differences in communication methods for each device to be connected.

[0137] The input device 2G accepts various inputs from the user.

[0138] The input device 2G includes, for example, an operation input device that accepts mechanical operation input from a user. The operation device for remote operation may be an operation input device. The operation input device includes, for example, a button, a toggle, a lever, a touch panel mounted on the display device 2H, a touch pad provided separately from the display device 2H, a keyboard, a mouse, etc.

[0139] The input device 2G also includes, for example, a voice input device capable of receiving voice input from the user. The voice input device includes, for example, a microphone capable of collecting the user's voice.

[0140] The input device 2G includes, for example, a gesture input device capable of receiving a gesture input from a user. The gesture input device includes, for example, a camera capable of capturing an image of a user's gesture.

[0141] 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 including information related to a user's fingerprint or iris.

[0142] The display device 2H displays an information screen and an operation screen to the user. The display device 2H is, for example, a liquid crystal display or an organic EL (Electroluminescence) display.

[0143] The sound output device 2I conveys various kinds of 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.

[0144] [Functional configuration of the maintenance support system] Next, the functional configuration of the maintenance support system SYS will be described with reference to FIG.

[0145] FIG. 15 is a diagram illustrating a functional configuration of an example of the maintenance support system SYS.

[0146] 15, the support device 2 includes a diagnostic item selection unit 21, a diagnostic command transmission unit 22, a diagnostic result acquisition unit 23, and a diagnostic result notification unit 24. 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 the program on the CPU 2D.

[0147] In response to a request from a user, the diagnosis item selection unit 21 selects an item (diagnosis item) to be diagnosed for abnormality from among a plurality of function items related to the door 80. Hereinafter, the plurality of function items that are candidates for the diagnosis item will be referred to as "a plurality of candidate items" for convenience.

[0148] For example, an application program (hereinafter, "app") that works in conjunction with the support device 2 is installed in the UI device 3. This allows the user to operate the UI device 3 to start the app, and to transmit a request (instruction) from the UI device 3 to the support device 2 by operating a screen of the app displayed on a display device 3H (see FIG. 16, etc.) of the UI device 3. The user may also input a request (instruction) to the support device 2 using an input device 2G of the support device 2.

[0149] The multiple candidate items include, for example, an item related to the running resistance of the door 80, and an item related to the positions of the DCS 60 and the DCS abutment portion 213. The multiple candidate items also include an item related to the positions of the DLS 70 and the locking device abutment portion 232. The multiple candidate items may also include an item related to the positional relationship between the lock pin 230 and the lock hole 223A when the door 80 is in a fully closed state, an item related to the locking mechanism portion LCM, an item related to the fastening structure between the door panels 80A, 80B and the door drive mechanism 200, and the like.

[0150] For example, a plurality of diagnostic item groups including some or all of the items of the plurality of candidate items are predefined, and the user selects one of the plurality of diagnostic item groups through the UI device 3. As a result, the diagnostic item selection unit 21 can select one or more items included in the selected diagnostic item group as diagnostic items in response to a user request. The contents of the items included in each of the plurality of diagnostic item groups may be fixed, or may be changeable in response to a user request or a predetermined condition. The plurality of diagnostic item groups are predefined in a manner that is divided according to differences in the timing and cycle of inspections and checks for each of the plurality of candidate items, for example. For example, diagnostic item groups corresponding to daily inspections and checks, weekly inspections and checks, monthly inspections and checks, annual inspections and checks, biennial inspections and checks, and quadrennial inspections and checks are prepared in advance. In addition, a diagnostic item group that collects items corresponding to the locations or parts where maintenance was performed most recently from among the plurality of candidate items may be predefined. In addition, the user may be able to customize the candidate items included in the diagnostic item group to his / her preferred contents through the UI device 3.

[0151] For example, an application screen including icons to be operated corresponding to each of a plurality of diagnostic item groups is displayed on the display device 3H of the UI device 3. This allows the user to select one diagnostic item group from the plurality of diagnostic item groups by performing an operation of selecting and determining one icon from the plurality of icons through the input device of the UI device 3.

[0152] Also, the user may be able to individually select one or more diagnostic items from among the multiple candidate items through the UI device 3. For example, an application screen including a hierarchical list of the multiple candidate items is displayed on the display device 3H of the UI device 3. This allows the user to individually select one or more diagnostic items from the list through the UI device 3.

[0153] The diagnostic command transmission unit 22 transmits a command (diagnosis command) to execute an abnormality diagnosis for one or more diagnostic items selected by the diagnosis item selection unit 21 from among the multiple candidate items to the door control device 100 via the transmission device 16. The destination of the diagnostic command may be all the door control devices 100 of the railway vehicle 1, or may be some of the door control devices 100. When the diagnostic command is transmitted to some of all the door control devices 100 of the railway vehicle 1, for example, the destination door control device 100 may be selectable by the user using an application screen of the UI device 3.

[0154] When the door control device 100 receives a diagnosis command from the support device 2, the door control device 100 performs an abnormality diagnosis for each diagnosis item specified in the diagnosis command.

[0155] For example, the door control device 100 shifts the control mode related to the opening and closing operation of the door 80 from the normal mode to the diagnosis mode. The normal mode is a control mode used when passengers of the railcar 1 get on and off through the door opening, and the diagnosis mode is a control mode used when measuring (obtaining) data for diagnosing an abnormality related to the door 80 (hereinafter, simply referred to as "abnormality diagnosis"). Then, the door control device 100 executes at least one of the opening operation and the closing operation of the door 80 for obtaining data required for abnormality diagnosis in accordance with the operation content of the door 80 that is predefined for each diagnosis item. In this way, the door control device 100 can obtain time-series measurement data of the measurement object that represents the state of the door 80 when the door 80 is operated. The measurement object that represents the state of the door 80 is a physical quantity that represents the state of the door 80, a signal that represents the state of the door 80, and the like. The physical quantity that represents the state of the door 80 includes, for example, the position of the door 80, the speed of the door 80, the acceleration of the door 80, the running resistance of the door 80, and the current of the motor 30 that drives the door 80. The signal representing the state of the door 80 includes, for example, a DCS signal, a DLS signal, etc. When the operation contents of the door 80 corresponding to each of the multiple diagnostic items specified in the diagnostic command are different, the execution of the predetermined operation of the door 80 and the acquisition of the measurement data are repeated the number of times corresponding to the number of diagnostic items specified in the diagnostic command. Also, when the operation contents of the door 80 are the same for at least a part of the multiple diagnostic items specified in the diagnostic command, the operation contents of the door 80 may be performed only once. As a result, the number of times the execution of the predetermined operation of the door 80 and the acquisition of the measurement data are repeated is less than the number of diagnostic items specified in the diagnostic command, and the efficiency of the operation of acquiring the measurement data for diagnosing an abnormality in the door 80 can be improved.

[0156] The type of measurement data to be acquired (i.e., the type of measurement data to be acquired when acquiring data for abnormality diagnosis) is, for example, predefined for each of a plurality of candidate items. In this case, the type of measurement data to be acquired for each of a plurality of candidate items is preregistered, for example, in an auxiliary storage device of the door control device 100. The type of measurement data to be acquired for each of a plurality of candidate items may also be preregistered in an auxiliary storage device 2B of the support device 2. In this case, the diagnosis command includes not only information representing the diagnosis item selected by the diagnosis item selection unit 21, but also information representing the type of measurement data to be acquired corresponding to the target diagnosis item.

[0157] The operation details of the door 80 for acquiring the measurement data required for the abnormality diagnosis for each of the multiple candidate items are registered in advance, for example, in an auxiliary storage device of the door control device 100. In addition, the operation details of the door 80 for acquiring the measurement data required for the abnormality diagnosis for each of the multiple candidate items may be registered in advance in an auxiliary storage device 2B of the support device 2. In this case, the diagnosis command includes not only information representing the diagnosis item selected by the diagnosis item selection unit 21, but also information representing the operation details of the door 80 corresponding to the target diagnosis item.

[0158] In addition, when the measurement data necessary for the abnormality diagnosis for each diagnosis item has already been acquired, the process of making the door 80 execute a predetermined operation may be omitted. For example, when the measurement data acquired when at least one of the opening operation and closing operation of the door 80 is performed while the train is stopped at the nearest station, etc., can be used for the abnormality diagnosis for the diagnosis item, the process of making the door 80 execute a predetermined operation is omitted.

[0159] When the door control device 100 completes acquisition of the measurement data for abnormality diagnosis of the door 80, it performs abnormality diagnosis on the diagnosis items of the door 80 based on the acquired measurement data. The door control device 100 may perform abnormality diagnosis using the measurement data as is, or may perform abnormality diagnosis using data obtained by processing the measurement data (processed data). The processed data includes, for example, data resulting from frequency analysis of the measurement data. The data resulting from frequency analysis of the measurement data is obtained, for example, by applying a fast Fourier transform (FFT) to the measurement data. Alternatively, the data may be obtained by applying a continuous wavelet transform (CWT), a short time Fourier transform (STFT), or the like to the measurement data.

[0160] The door control device 100 performs an abnormality diagnosis for the diagnostic items of the door 80 based on, for example, a comparison between the measurement data or its processed data (for example, data resulting from frequency analysis) and the reference data. The reference data includes, for example, a reference value (threshold value) for a feature amount of the measurement data or the data resulting from the frequency analysis. As a result, the door control device 100 can diagnose the presence or absence of an abnormality, the presence or absence of a symptom of an abnormality, the degree of abnormality, etc. for the diagnostic items of the door 80 by, for example, comparing the magnitude relationship between the feature amount obtained from the measurement data or the data resulting from the frequency analysis and the reference value. In addition, the reference data may include data of the same type (i.e., data of the same physical quantity) as the measurement data or the data resulting from the frequency analysis, and data that indicates a normal or abnormal state of the door 80. As a result, the door control device 100 can diagnose the presence or absence of an abnormality, the presence or absence of a symptom of an abnormality, the degree of abnormality, etc. for the diagnostic items of the door 80 by evaluating the degree of deviation between the measurement data or the data resulting from the frequency analysis and the reference data by a known method. The reference data may be past measurement data of the door 80 that is the target of the abnormality diagnosis or the result of frequency analysis thereof, or the reference data may be past measurement data of another door 80 different from the door 80 that is the target of the abnormality diagnosis or the result of frequency analysis thereof. In this way, the door control device 100 can diagnose the presence or absence of an abnormality, the presence or absence of a sign of an abnormality, the degree of abnormality, etc., regarding the diagnosis items of the door 80 by evaluating the degree of deviation between the measurement data immediately after the measurement and the past measurement data.

[0161] Furthermore, the door control device 100 may use the history of the measurement data and the data of the result of frequency analysis thereof, including the current data, to perform an abnormality diagnosis on the diagnostic items of the door 80 from the tendency of changes in the measurement data and the data of the result of frequency analysis. In this case, the history of the measurement data and the data of the result of frequency analysis thereof may be stored in an auxiliary storage device of the door control device 100, an auxiliary storage device 2B of the support device 2, or another storage device.

[0162] The door control device 100 may also perform an abnormality diagnosis for the diagnosis items of the door 80 using a trained model that has undergone supervised learning based on the measurement data, the data resulting from the frequency analysis thereof, and the data of the features obtained from these. In this case, the trained model is obtained by performing machine learning of the base learning model based on teacher data in which data obtained from an accelerated durability test using an actual machine or data obtained from a computer simulation is labeled as normal or abnormal. For example, the trained model is mainly configured with a deep neural network (DNN), and is optimized by applying a machine learning algorithm such as an error backpropagation method based on the teacher data.

[0163] There may also be cases where big data corresponding to historical data such as measurement data related to diagnostic items of many doors 80 of multiple railroad cars 1, frequency analysis data thereof, and diagnostic result data can be used. In this case, the door control device 100 may apply machine learning (unsupervised learning) such as clustering based on the big data to perform abnormality diagnosis related to the functional items of the doors 80.

[0164] Furthermore, the door control device 100 may perform, in addition to the abnormality diagnosis related to the diagnosis items of the door 80, a process associated with the abnormality diagnosis.

[0165] For example, when the door control device 100 diagnoses that there is an abnormality or a symptom thereof related to a diagnosis item of the door 80, or when it diagnoses that the degree of abnormality is relatively high with respect to a predetermined standard, the door control device 100 estimates the cause of the abnormality or the symptom thereof based on the measurement data and the data resulting from the frequency analysis thereof. The degree of abnormality being relatively high with respect to the predetermined standard may mean that the degree of abnormality is equal to or greater than the predetermined standard, or may mean that the degree of abnormality is higher than the predetermined standard.

[0166] The door control device 100 may determine the contents of the maintenance for the diagnosis items of the door 80 based on the estimation result of the cause of the abnormality and the symptom of the abnormality for the diagnosis items of the door 80. The contents of the maintenance for the door 80 may include, for example, a method of the maintenance for the door 80. The contents of the maintenance for the door 80 may also include the contents of adjustments (for example, the amount of adjustment) when adjusting the arrangement of a specific part of the door 80. The contents of the maintenance for the door 80 may also include mechanical measures such as removing foreign matter from the door 80 and lubricating the door 80. The contents of the maintenance for the door 80 may also include information on advance preparations required for the maintenance. The information on advance preparations required for the maintenance may include, for example, information on the inventory and ordering of replacement parts required for the maintenance. The contents of the maintenance for the door 80 may also include the timing of the maintenance. In this case, for example, the door control device 100 predicts future changes based on the time series changes in the measurement data of multiple times with different implementation times, including the current measurement, and plans the timing of the maintenance by grasping the urgency of the maintenance.

[0167] Furthermore, the door control device 100 may determine the period and timing of future inspections and checks of the diagnostic items of the door 80 based on the diagnosis results of the deterioration level and remaining life of the diagnostic items of the door 80. This allows, for example, the support device 2 to update candidate items included in each of the multiple diagnostic item groups based on the contents of the determination of the period and timing of future inspections and checks of the diagnostic items of the door 80.

[0168] Incidentally, the processing associated with the abnormality diagnosis may be performed by the support device 2 (for example, the diagnosis result notification unit 24).

[0169] When the abnormality diagnosis for the diagnosis items of the door 80 is completed, or when the processing associated with the abnormality diagnosis is completed, the door control device 100 transmits information regarding the diagnosis result of the abnormality diagnosis to the support device 2 via the transmission device 16.

[0170] The information on the diagnosis result includes information that represents the diagnosis result itself, such as the presence or absence of an abnormality, the presence or absence of a sign of an abnormality, and the degree of abnormality (degree of deterioration). The information on the diagnosis result may also include measurement data used in the abnormality diagnosis and processed data thereof (for example, data resulting from frequency analysis). The information on the diagnosis result may also include information on the diagnostic criteria for the abnormality diagnosis. The information on the diagnostic criteria for the abnormality diagnosis includes, for example, the above-mentioned reference data. The information on the diagnosis result may also include information that represents the result of the processing associated with the above-mentioned abnormality diagnosis. For example, the information on the result of the processing associated with the abnormality diagnosis may include information that represents the cause of an abnormality or a sign of an abnormality related to a diagnosis item when there is an abnormality or a sign of an abnormality related to the diagnosis item, or when the degree of abnormality is higher than a predetermined standard. The information on the result of the processing associated with the abnormality diagnosis may also include information that represents the contents of maintenance related to the diagnosis item of the door 80. The information on the result of the processing associated with the abnormality diagnosis may also include information that represents the determination contents of the cycle and timing of future inspections and inspections of the diagnosis items of the door 80.

[0171] The diagnosis result acquisition unit 23 acquires information on the diagnosis result received from the door control device 100 from a receiving buffer or the like.

[0172] The diagnosis result notifying unit 24 notifies the user of the diagnosis result of the abnormality diagnosis for the diagnosis item of the door 80 based on the information on the diagnosis result. Specifically, the diagnosis result notifying unit 24 notifies the user of the maintenance content of the door 80 corresponding to the diagnosis result through the UI device 3 so that the user can recognize it by transmitting a notification command including information on the diagnosis result to the UI device 3. The maintenance content of the door 80 corresponding to the diagnosis result includes, for example, the maintenance content of the door 80 for dealing with the abnormality or the sign when the diagnosis result indicates that there is an abnormality or a sign of an abnormality, or indicates a relatively high state with respect to a predetermined standard of the abnormality degree. In addition, the maintenance content of the door 80 corresponding to the diagnosis result may include the maintenance content of the door 80 for suppressing deterioration with respect to the diagnosis item of the door 80 when the diagnosis result indicates that there is a normality or indicates a relatively low state with respect to a predetermined standard of the abnormality degree. This allows the user to grasp the maintenance content of the door 80 corresponding to the diagnosis result of the abnormality diagnosis for the diagnosis item of the door 80 together with the diagnosis result. Therefore, the support device 2 can support more appropriate implementation of the maintenance of the door 80.

[0173] The notification to the user is performed, for example, visually by displaying on an application screen of a display device 3H mounted on the UI device 3. The notification to the user may be performed auditorily by sound through a sound output device mounted on the UI device 3 instead of or in addition to the visual method.

[0174] For example, the diagnosis result notifying unit 24 notifies the user through the UI device 3 of the diagnosis result of the abnormality diagnosis regarding the diagnosis item of the door 80, as well as the content of the maintenance corresponding to the diagnosis result, that is, information indicating the content of the maintenance.

[0175] The diagnosis result notification unit 24 may notify the user of the diagnosis result of the abnormality diagnosis regarding the diagnosis item of the door 80 through the UI device 3, together with information for guiding the user to information representing the maintenance contents of the door 80 corresponding to the diagnosis result. The information for guiding the user to the information representing the maintenance contents of the door 80 includes, for example, information representing a page of a reference portion of a maintenance manual for the door 80. The information for guiding the user to the information representing the maintenance contents of the door 80 may include an icon image to be operated for displaying a reference portion of the maintenance manual, which is displayed on an application screen of the display device 3H of the UI device 3. The information for guiding the user to the information representing the maintenance contents of the door 80 may include link information such as a URL (Uniform Resource Locator) for directly accessing a reference portion of a digital version of the maintenance manual. This allows the user to access the information representing the maintenance contents from the information for guiding the user to the information representing the maintenance contents of the door 80 and understand the maintenance contents.

[0176] Furthermore, the diagnosis result notification unit 24 may notify the user through the UI device 3 of information suggesting the contents of the maintenance of the door 80 corresponding to the diagnosis result, or information for guiding the user to that information.

[0177] For example, the information suggesting the contents of the maintenance of the door 80 corresponding to the diagnosis result includes information indicating the cause of the abnormality or the symptom of the abnormality. Specifically, when the diagnosis result of the abnormality diagnosis indicates the presence of an abnormality or the presence of a symptom of the abnormality, or indicates a relatively high state with respect to a predetermined standard of the degree of abnormality, the diagnosis result notification unit 24 may notify the user of the cause of the abnormality or the symptom together with the diagnosis result through the UI device 3. This allows the user to determine the contents of the maintenance of the door 80 according to the cause of the abnormality or the symptom related to the diagnosis items of the door 80.

[0178] Furthermore, the information suggesting the contents of the maintenance of the door 80 corresponding to the diagnosis result may include a drawing of the target part of the maintenance of the door 80. Specifically, the diagnosis result notifying unit 24 may cause the display device 3H of the UI device 3 to display a drawing of the target part of the maintenance of the door 80 corresponding to the diagnosis result together with the diagnosis result of the abnormality diagnosis related to the diagnosis item of the door 80. This allows the user to understand the structure of the target part of the maintenance of the door 80, and thereby understand the contents of the maintenance, such as the method of the maintenance of the door 80.

[0179] The diagnosis result notifying unit 24 may notify the user of information for guiding the user to a drawing of a target part of the maintenance of the door 80 corresponding to the diagnosis result, together with the diagnosis result of the abnormality diagnosis regarding the diagnosis item of the door 80, through the UI device 3. The information for guiding the user to the drawing of the target part of the maintenance of the door 80 includes, for example, information representing a reference part in the maintenance manual where the target drawing is described, or a page of a reference part such as a drawing collection other than the maintenance manual. The information for guiding the user to the drawing of the target part of the maintenance of the door 80 may include an icon image of an operation target for displaying the drawing of the above-mentioned reference part such as a maintenance manual or a drawing collection, which is displayed on the application screen of the display device 3H of the UI device 3. The information for guiding the user to the drawing of the target part of the maintenance of the door 80 may include link information such as a URL for directly accessing the reference part of a digital version of a maintenance manual or a drawing collection. As a result, the user can access the drawing from the information for guiding the user to the drawing of the target part of the maintenance of the door 80 and grasp the structure of the target part of the maintenance of the door 80, thereby grasping the contents of the maintenance such as the method of the maintenance of the door 80.

[0180] Furthermore, the information suggesting the contents of the maintenance of the door 80 corresponding to the diagnosis result may include time-series measurement data used in the abnormality diagnosis and processed data thereof (for example, data of the result of frequency analysis). Specifically, the diagnosis result notifying unit 24 may cause the display device 3H of the UI device 3 to display the time-series measurement data used in the abnormality diagnosis and data of the result of the frequency analysis thereof, etc., together with the diagnosis result of the abnormality diagnosis regarding the diagnosis items of the door 80. This allows the user to determine the contents of the maintenance of the door 80 corresponding to the diagnosis result by himself / herself, by analyzing the time-series measurement data and data of the result of the frequency analysis thereof.

[0181] At this time, the diagnosis result notifying unit 24 may display, on the display device 3H of the UI device 3, measurement data acquired for abnormality diagnosis and data resulting from frequency analysis thereof for a plurality of types of measurement objects that represent the state of the door 80 when the door 80 is in operation. This allows the user to comprehensively evaluate the measurement data for a plurality of types of measurement objects and data resulting from frequency analysis thereof, and as a result, to more appropriately determine the contents of maintenance of the door 80 that corresponds to the diagnosis result.

[0182] At this time, the diagnosis result notifying unit 24 may display the time-series measurement data acquired for the abnormality diagnosis, the data of the frequency analysis result thereof, and the like, on the display device 3H of the UI device 3 so that the data can be compared with the reference data. This allows the user to more easily and appropriately determine the contents of the maintenance of the door 80 corresponding to the diagnosis result.

[0183] In addition, at this time, the diagnosis result notification unit 24 may display on the display device 3H of the UI device 3 the measurement data of a type of measurement object for which the cause of the abnormality can be identified from a plurality of different patterns that may occur in the data and the data of the result of the frequency analysis thereof (see Figs. 18 to 21). This allows the user to more appropriately and easily estimate the cause of the abnormality or its symptoms depending on which of the plurality of patterns the measurement data or the data of the result of the frequency analysis thereof corresponds to. Therefore, the user can more easily and appropriately determine the contents of the maintenance of the door 80 that corresponds to the diagnosis result.

[0184] [First example of a method for diagnosing door-related abnormalities and notifying the results of the diagnosis] Next, a first example of a method for diagnosing an abnormality relating to the door 80 and a method for notifying the result of the diagnosis will be described with reference to FIGS.

[0185] 16 and 17 are diagrams showing a first example of a display screen of the diagnosis result of the abnormality diagnosis regarding the door 80. Specifically, Fig. 16 and Fig. 17 are diagrams showing a specific example (display screen 1600) of the display screen of the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80. Fig. 16 and Fig. 17 show the display screen 1600 displayed on the display device 3H of the UI device 3 in each state before and after the support device 2 acquires the diagnosis result from the door control device 100 after a diagnosis command is transmitted from the support device 2 to the door control device 100.

[0186] 16 and 17, a display screen 1600 includes graphs 1601-1604 that represent measurement data of physical quantities related to the operation of the door 80 during the opening operation of the door 80. The graphs 1601-1604 are displayed on the display screen 1600, arranged in the vertical direction (up and down direction) from the top.

[0187] Graph 1601 shows the change in running resistance of the door 80 with respect to the position of the door 80 from a fully closed state to a fully open state during the opening operation of the door 80. In the graph 1601, the left direction in the figure shows the closing direction of the door 80, and the right direction shows the opening direction of the door 80. A line 1601A showing a diagnostic criterion (threshold value) of the running resistance during the opening operation of the door 80 is drawn on the graph 1601. When the measurement data of the running resistance during the opening operation of the door 80 becomes relatively large with respect to the threshold value corresponding to the line 1601A, the door control device 100 can determine that there is an abnormality in the running resistance of the door 80.

[0188] Graph 1602 represents the change over time in the position of door 80 from the fully closed state to the fully open state during the opening operation of door 80.

[0189] A graph 1603 represents the change over time in the speed of the door 80 during the opening operation of the door 80 from the fully closed state to the fully open state.

[0190] A graph 1604 represents a time series change in the current of the motor 30 that drives the door 80 during the opening operation of the door 80 from the fully closed state to the fully open state.

[0191] Moreover, display screen 1600 includes a display area 1605 that extracts the maximum value of the running resistance when door 80 is opened from graph 1601 and the position of door 80 at that time and displays them as numerical values. Display area 1605 is disposed between graph 1601 and graph 1602 in the vertical direction of display screen 1600.

[0192] As shown in FIG. 16, before the support device 2 acquires the diagnosis result from the door control device 100, graphs 1601 to 1604 display waveforms (broken lines) of reference data corresponding to the normal state of the door 80.

[0193] 17, when the support device 2 acquires a diagnosis result from the door control device 100, the graphs 1601 to 1604 display the waveform of the measurement data acquired for abnormality diagnosis, superimposed on the waveform of the reference data corresponding to the normal state regarding the running resistance of the door 80. This allows the user to compare the measurement data with the reference data.

[0194] As shown in Figs. 16 and 17, the running resistance (dashed line) of the reference data in graph 1601 is maintained in a state smaller than line 1601A. Therefore, display area 1605 displays that the diagnostic result of the reference data is normal ("Pass"). On the other hand, as shown in Fig. 17, the running resistance (solid line) of the measured data in graph 1601 exceeds line 1601A near the fully closed position of door 80. Therefore, display area 1605 displays that the diagnostic result for the measured data is abnormal ("Fail"). This allows the user to recognize that the diagnostic result of the current abnormality diagnosis indicates that there is an abnormality in the running resistance of door 80.

[0195] In addition, since the running resistance locally exceeds the line 1601A when the door 80 is in the fully open position, the user can infer that the cause is that a foreign object may be caught in the door pocket of the door 80. Therefore, the user can proceed with preparations for maintenance of the door 80 according to the inferred cause.

[0196] Furthermore, the user can more appropriately determine the cause of the abnormality regarding the running resistance of the door 80 by comparing a plurality of different types of measurement data corresponding to the graphs 1601 to 1604.

[0197] 17, a pop-up 1606 is displayed on the display screen 1600, instructing the maintenance contents corresponding to the diagnosis result based on the measurement data. In this example, the pop-up 1606 displays text information indicating that the cause of the abnormality may be the intrusion of a foreign object into the door 80, and also displays text information instructing the maintenance contents to prompt the user to check whether or not a foreign object has been introduced into the door pocket. This allows the user to easily understand the cause of the abnormality related to the running resistance of the door 80 and the maintenance method for the abnormality.

[0198] Note that text information indicating only either the cause of the abnormality related to the running resistance of the door 80 or the maintenance method for dealing with the abnormality may be displayed in the pop-up 1606. Also, the pop-up 1606 may be omitted.

[0199] In this way, in this example, the user can understand the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80 and the contents of the maintenance corresponding to the diagnosis result through the application screen (display screen 1600) of the display device 3H. Therefore, the user can appropriately carry out the maintenance corresponding to the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80.

[0200] [Second example of method for diagnosing door-related abnormalities and notifying the results of the diagnosis] Next, a second example of a method for diagnosing an abnormality relating to the door 80 and a method for notifying the result of the diagnosis will be described with reference to FIGS.

[0201] In this example, the door control device 100 differs from the first example in that it performs an abnormality diagnosis on the running resistance of the door 80 based on time-series measurement data of the current of the motor 30. In addition, in this example, the door control device 100 differs from the first example in that it estimates the cause of the abnormality from a plurality of different patterns that may occur in the time-series measurement data of the current of the motor 30.

[0202] <How to diagnose door problems> As described above, the door control device 100 performs an abnormality diagnosis regarding the running resistance of the door 80 based on the time-series measurement data of the current of the motor 30.

[0203] For example, the door control device 100 diagnoses an abnormality related to the running resistance of the door 80 based on the degree of deviation between the time series measurement data of the motor 30 and the reference data during a period corresponding to a steady state during the opening and closing operation of the door 80 in the diagnosis mode. Specifically, the door control device 100 may diagnose that there is an abnormality related to the running resistance of the door 80 when the degree of deviation is relatively large with respect to a predetermined standard. The degree of deviation being relatively large with respect to the predetermined standard may be equal to or larger than the predetermined standard, or may exceed the predetermined standard. The reference data is data representatively representing the time series of the current of the motor 30 during the opening and closing operation of the door 80 in a normal state in the diagnosis mode. The measurement data of the current of the motor 30 during the opening and closing operation of the door 80 used for the abnormality diagnosis may be the measurement data of the current of the motor 30 during the opening operation of the door 80, or the measurement data of the current of the motor 30 during the closing operation of the door 80, or both. In the case where measurement data of the time series of the current of the motor 30 during the opening operation of the door 80 is used in the abnormality diagnosis regarding the running resistance of the door 80, data representatively representing the time series of the current of the motor 30 during the opening operation of the door 80 in a normal state is used as the reference data. Similarly, in the case where measurement data of the time series of the current of the motor 30 during the closing operation of the door 80 is used in the abnormality diagnosis regarding the running resistance of the door 80, data representatively representing the time series of the current of the motor 30 during the closing operation of the door 80 in a normal state is used as the reference data.

[0204] Further, the door control device 100 may control the door 80 to operate at a constant speed V1 in the normal mode, and may control the door 80 to operate at a constant speed V2 (<V1) in the diagnostic mode. Thereby, when viewed based on the position of the door 80 between the fully closed position and the fully open position, the transient state section of the door 80 can be made smaller, and the steady state section of the door 80 can be made larger. Therefore, the door control device 100 can perform an abnormality diagnosis regarding the running resistance of the door 80 in a wider operation section between the fully closed position and the fully open position of the door 80 based on the measured data of the current of the motor 30.

[0205] The door control device 100 may use any method to determine whether the degree of deviation between the time-series measured data of the current of the motor 30 and the reference data during the period corresponding to the steady state during the opening and closing operation of the door 80 in the diagnostic mode is relatively large with respect to a predetermined standard.

[0206] For example, a threshold Th01 higher than the current level of the motor 30 in the reference data and a threshold Th02 lower than the current level of the motor 30 in the reference data are provided. Thereby, when the time-series measured data of the current of the motor 30 in the diagnostic mode is relatively larger than the threshold Th01, or relatively smaller than the threshold Th02, the door control device 100 can determine that the degree of deviation is relatively large with respect to the predetermined standard. The fact that the measured data is relatively larger than the threshold Th01 may mean that the measured data is equal to or higher than the threshold Th01, or is larger than the threshold Th01. Similarly, the fact that the measured data is relatively smaller than the threshold Th02 may mean that the measured data is equal to or lower than the threshold Th02, or is smaller than the threshold Th02.

[0207] In addition, the door control device 100 may evaluate the degree of deviation based on pattern matching or the like between the measured data of the current of the motor 30 and the reference data during the period corresponding to the steady state during the opening and closing operation of the door 80 in the diagnostic mode. Then, the door control device 100 may determine whether the degree of deviation is relatively large with respect to a predetermined standard.

[0208] In this manner, in this embodiment, the door control device 100 can perform an abnormality diagnosis regarding the running resistance of the door 80 based on the measurement data of the current of the motor 30 during the opening and closing operation of the door 80 in the diagnosis mode.

[0209] <Method of estimating the cause of anomaly> In this example, the door control device 100 estimates the cause of the abnormality from a plurality of different patterns that may occur in the time-series measurement data of the current of the motor 30, as described above.

[0210] <Grease drying or dirt on door rails> Fig. 18 is a diagram that shows a first example of the current of the motor 30 when the door 80 is opened or closed when an abnormality occurs in the running resistance of the door 80. Specifically, Fig. 18 shows a diagram that shows a specific example (dashed line) of a time series of the current of the motor 30 when the door 80 is opened or closed when an abnormality occurs in the running resistance of the door 80 due to grease drying or dirt on the door rail. Fig. 9 also shows time series data (solid line) that shows a typical current of the motor 30 when the door 80 is opened or closed when the door 80 is normal.

[0211] 18, when the grease of the door rail dries up or becomes dirty, the current of the motor 30 when the door 80 is opened or closed tends to deviate significantly from the normal current over the entire period corresponding to the steady state of the door 80. Therefore, the door control device 100 can estimate the occurrence of grease dries up or becomes dirty in the door rail when the deviation (difference) between the measurement data of the current of the motor 30 when the door 80 is opened or closed in the diagnosis mode and the reference data is relatively large with respect to a predetermined standard over the entire operation section corresponding to the steady state of the door 80.

[0212] For example, when the average value of the current in the period corresponding to the steady state during the opening and closing operation of the door 80 in the diagnosis mode is greater than the threshold value Th1, the door control device 100 estimates that the grease of the door rail has dried up or become dirty. The threshold value Th1 is set to a value greater than 0 (zero) and somewhat greater than the average value of the same section of the reference data.

[0213] <Foreign objects entering the door rail or deformation of the door rail> Fig. 19 is a diagram that shows a second example of the current of the motor 30 when the door 80 is opened or closed when an abnormality occurs in the running resistance of the door 80. Specifically, Fig. 19 shows a diagram that shows a specific example (dashed line) of a time series of the current of the motor 30 when the door 80 is opened or closed when an abnormality occurs in the running resistance of the door 80 due to the intrusion of a foreign object into the door rail or deformation (distortion) of the door rail. Fig. 19 also shows time series data (solid line) that shows a typical current of the motor 30 when the door 80 is opened or closed when the door 80 is normal.

[0214] As shown in FIG. 19, when a foreign object enters the door rail or the door rail is distorted (deformed), the current of the motor 30 during the opening and closing operations of the door 80 tends to be locally relatively large in difference from the normal state during the period corresponding to the steady state of the door 80. This is because the entry of foreign objects into the door rail and the distortion (deformation) of the door rail often occur locally in a part of the door rail. Therefore, the door control device 100 can estimate that a foreign object has entered the door rail or the door rail has been distorted (deformed) when a state in which the deviation (difference) between the measurement data of the current of at least one of the motor 30 during the opening and closing operations of the door 80 in the diagnosis mode and the reference data is relatively large with respect to a predetermined standard occurs locally during a part of the period corresponding to the steady state of the door 80. In addition, the door control device 100 can estimate the location where a foreign object has entered the door rail or the door rail has been distorted (deformed) by comparing the measurement data of the current during the opening and closing operations of the door 80 in the diagnosis mode with the measurement data of the position of the door 80. The measurement data of the position of the door 80 is obtained based on the output of the encoder 31 .

[0215] For example, when the current of the motor 30 during a period corresponding to a steady state during the opening or closing operation of the door 80 in the diagnosis mode is locally greater than the threshold value Th2, the door control device 100 estimates that a foreign object has entered the door rail or the door rail has been distorted (deformed). The threshold value Th2 is set to a value greater than 0 (zero), for example, a value greater than the threshold value Th1. This is because it is assumed that a local increase in running resistance caused by the entry of a foreign object into the door rail or distortion of the door rail is greater than an increase in the overall running resistance of the door rail caused by grease drying or dirt on the door rail.

[0216] The door control device 100 may further distinguish between the intrusion of a foreign object into the door rail and distortion (deformation) of the door rail. In this case, the opening and closing operations of the door 80 are performed multiple times in the diagnosis mode, and the measurement data of the current of the motor 30 and the position of the door 80 are used. In this case, all of the measurement data obtained multiple times may be measurement data corresponding to the opening operation of the door 80, or may be measurement data corresponding to the closing operation of the door 80. Furthermore, the measurement data obtained multiple times may be a mixture of measurement data corresponding to the opening operation of the door 80 and measurement data corresponding to the closing operation of the door 80.

[0217] For example, the door control device 100 may estimate that the door rail is distorted if the locations of the door rail abnormalities in the multiple measurement data are concentrated within a relatively narrow predetermined range in the entire operation section between the fully closed position and the fully open position of the door 80. On the other hand, the door control device 100 may estimate that a foreign object has entered the door rail if the locations of the door rail abnormalities in the multiple measurement data deviate from a relatively narrow predetermined range in the entire operation section between the fully closed position and the fully open position of the door 80. This is because the location where the door rail is distorted is fixed, whereas the location where the foreign object that has entered the door rail is likely to move due to the opening and closing operation of the door 80.

[0218] <Changes in the inclination of the door rail in the front-to-rear direction> 20 and 21 are diagrams that show a third example of the current of the motor 30 when the door 80 is opened or closed when an abnormality occurs in the running resistance of the door 80. Specifically, FIG. 20 shows the relationship between the current of the motor 30 and the position of the door 80 when the door 80 is opened (broken line) and closed (dotted line) due to a change in the inclination state of the door rail in the front-rear direction and the door 80 is in an opening operation and a closing operation when an abnormality occurs in the running resistance of the door 80 due to a change in the inclination state of the door rail in the front-rear direction. FIG. 21 shows a diagram that shows a specific example of the time series of the current of the motor 30 when the door 80 is opened (broken line) and closed (dotted line) due to a change in the inclination state of the door rail in the front-rear direction and the door 80 is in an opening operation and a closing operation when an abnormality occurs in the running resistance of the door 80 due to a change in the inclination state of the door rail in the front-rear direction. In addition, FIG. 20 and FIG. 21 show data (solid line) that shows a typical current of the motor 30 when the door 80 is opened or closed when the door 80 is in a normal state. In this example, in normal conditions, the door rails are provided so as to extend parallel to the front-rear direction of the railway vehicle, and in abnormal conditions, the door rails are inclined upward toward the direction of the opening operation of the door panels 80A, 80B.

[0219] 20 and 21, when a change in the inclination state of the door rail in the front-rear direction occurs, the current of the motor 30 during the opening or closing operation of the door 80 changes so that the deviation from the normal current increases from one end to the other end of the operation section or period of the door 80 corresponding to the steady state of the door 80. Therefore, when the deviation (difference) between the measurement data of the current of the motor 30 during the opening or closing operation of the door 80 in the diagnosis mode and the reference data increases from one end (start end) to the other end (end end) of the operation section or period of the door 80 corresponding to the steady state of the door 80 and reaches a state relatively large with respect to a predetermined standard, the door control device 100 can estimate that a change in the inclination state of the door rail in the front-rear direction has occurred.

[0220] For example, the door control device 100 estimates that a change in the inclination state in the front-rear direction of the door rail has occurred when the difference in the current value between one end and the other end of the operation section or period corresponding to the steady state during the opening operation or closing operation of the door 80 in the diagnosis mode is relatively large compared to the threshold value Th31. The threshold value Th31 is set to a value larger than 0 (zero) and sufficiently larger than the degree of change that may occur in the steady state when the door 80 is normal.

[0221] Also, as shown in FIG. 20, when the inclination state of the door rail changes in the front-rear direction, the current during the opening operation of the door 80 increases more in the opening direction of the operation section of the door 80 in the steady state of the door 80 than in normal. Similarly, as shown in FIG. 21, the current during the opening operation of the door 80 increases more in the time series than in normal in the steady state of the door 80. This is because the upward inclination of the door rail during the opening operation of the door 80 is larger than in normal. On the other hand, as shown in FIG. 20, the current during the closing operation of the door 80 decreases more in the time series than in normal in the steady state of the door 80 toward the closing direction of the operation section of the door 80. Similarly, as shown in FIG. 21, the current during the closing operation of the door 80 decreases more in the time series than in normal in the steady state of the door 80. This is because, contrary to the opening operation of the door 80, the downward inclination of the door rail during the closing operation of the door 80 is larger than in normal. Therefore, the door control device 100 can estimate that a change in the inclination state of the door rail in the front-rear direction has occurred when the difference in the current at the same position of the door 80 during the opening and closing operations of the door 80 in the diagnosis mode is sufficiently larger than normal in the steady state of the door 80. Also, the door control device 100 can estimate that a change in the inclination state of the door rail in the front-rear direction has occurred when the difference in the time-series measurement data of the current of the motor 30 during the opening and closing operations of the door 80 in the diagnosis mode increases in the steady state of the door 80 and reaches a state relatively large with respect to a predetermined standard.

[0222] For example, the door control device 100 estimates that a change in the inclination state of the door rail in the front-rear direction has occurred when the difference in current in the entire or part of the operation section of the door 80 corresponding to each steady state during the opening operation and closing operation of the door 80 in the diagnosis mode is relatively large compared to the threshold value Th32. The threshold value Th32 is a value larger than 0 (zero) and is set to a value sufficiently larger than the degree of the difference in current of the motor 30 in the operation section of the door 80 corresponding to the steady state of the door 80 that may occur between the opening operation and closing operation of the door 80 when the door 80 is normal. In addition, the door control device 100 estimates that a change in the inclination state of the door rail in the front-rear direction has occurred when the difference in the current value in the period corresponding to each steady state during the opening operation and closing operation of the door 80 in the diagnosis mode has reached a state larger than the threshold value Th33 over time. The threshold value Th33 is a value greater than 0 (zero) and is set to a value sufficiently greater than the degree of difference in the current of the motor 30 during the period corresponding to the steady state of the door 80 that may occur between the opening and closing operations of the door 80 when the door 80 is in a normal state.

[0223] <How to notify the diagnosis results> In this example, the support device 2 causes the display device 3H of the UI device 3 to display the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80.

[0224] For example, the support device 2 displays the waveform of the measurement data acquired for the abnormality diagnosis regarding the running resistance of the door 80 on the display device 3H of the UI device 3 together with the diagnosis result, similar to the first example described above. Specifically, the support device 2 may display the waveform of the time-series measurement data of the current of the motor 30 during the opening and closing operation of the door 80 on the display device 3H of the UI device 3, similar to the graph 1604 of FIG. 16 described above. In addition, the support device 2 may display the time-series measurement data and the reference data for the current of the motor 30 during the opening and closing operation of the door 80, superimposed on each other on the display device 3H of the UI device 3. This allows the user to determine the presence or absence of an abnormality in the door 80 from the degree of deviation between the measurement data of the current of the motor 30 during the opening and closing operation of the door 80 and the reference data. In addition, the user can estimate the cause of the abnormality by determining which of a plurality of patterns defined for each cause of the abnormality the measurement data of the current of the motor 30 during the opening and closing operation of the door 80 corresponds to.

[0225] Furthermore, similarly to the first example described above, the support device 2 may cause the display device 3H of the UI device 3 to display measurement data on a plurality of physical quantities related to the operation of the door 80, including the current of the motor 30, together with the diagnosis result.

[0226] Furthermore, similarly to the first example described above, when the diagnostic result indicates that there is an abnormality, the support device 2 may display, together with the diagnostic result, a pop-up indicating at least one of the cause of the abnormality and the contents of the maintenance to address the abnormality.

[0227] In this way, in this example, similarly to the first example described above, the user can understand the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80 and the contents of the maintenance corresponding to the diagnosis result through the application screen of the display device 3H. Therefore, the user can appropriately carry out the maintenance corresponding to the diagnosis result of the abnormality diagnosis regarding the running resistance of the door 80.

[0228] [Third example of method for diagnosing door-related abnormalities and notifying the results of the diagnosis] Next, a third example of a method for diagnosing an abnormality relating to the door 80 and a method for notifying the diagnosis result will be described with reference to FIGS.

[0229] In this example, the door control device 100 differs from the first and second examples described above in that it performs an abnormality diagnosis on the positions of the DCS 60 and the DCS abutment portion 213. Similarly, in this example, the support device 2 differs from the first and second examples described above in that it notifies the user of the diagnosis result of the abnormality diagnosis on the positions of the DCS 60 and the DCS abutment portion 213 through the UI device 3.

[0230] An abnormality in the position of the DCS 60 or the DCS abutment portion 213 means a state in which the positional relationship between the DCS 60 and the DCS abutment portion 213 in the fully closed state of the door 80 is not within a predetermined range in the front-rear direction of the railcar 1 or the opening / closing direction of the door 80. The predetermined range is, for example, defined as a range in which the amount of pushing PD of the movable contact 62 into the housing of the DCS 60 by the abutment portion 213B is relatively large compared to the threshold value PDth and the length L of the spring portion 213D is relatively large compared to the threshold value Lth in the fully closed state of the door 80. The threshold value PDth is, for example, defined in advance as the minimum value of the amount of pushing of the movable contact 62 that can reliably realize the ON state of the DCS 60. As a result, when the positional relationship between the DCS 60 and the DCS abutment portion 213 in the fully closed state of the door 80 is within the predetermined range, the DCS 60 can appropriately switch its output (hereinafter, "DCS signal") from OFF to ON in accordance with the fully closed state of the door 80. Moreover, the threshold value Lth is set in a range that is smaller than the natural length of the spring portion 213D and larger than the minimum length thereof, thereby ensuring an appropriate distance between the main body portion 213A and the contact portion 213B when the door 80 is in the fully closed state.

[0231] Various factors can cause abnormalities in the position of the DCS 60 or the DCS abutment portion 213. For example, abnormalities in the position of the DCS abutment portion 213 can occur due to changes in the position of the DCS abutment portion 213 caused by loosening of the bolts BLT over time. In addition, abnormalities in the position of the DCS 60 or the DCS abutment portion 213 can also occur due to improper adjustment of the mounting positions of the DCS 60 or the DCS abutment portion 213 during manufacturing or maintenance.

[0232] <How to diagnose door problems> As described above, the door control device 100 performs abnormality diagnosis on the DCS 60 and the position of the DCS abutment portion 213.

[0233] In the diagnosis mode, the door control device 100 performs, for example, a closing operation of the door 80 from a fully open position to a fully closed position at a speed V2. Also, in the diagnosis mode, the door control device may perform an opening operation of the door 80 from a fully closed position to a fully open position at a speed V2.

[0234] The door control device 100 measures (acquires) time series data of the position of the door 80 when the door 80 is closed or opened in the diagnostic mode, and the output of the DCS 60. In addition, in the diagnostic mode, the door control device 100 may measure (acquire) time series data of the speed of the door 80 when the door 80 is closed or opened in the diagnostic mode. The position and speed of the door 80 are measured (acquired) based on the output of the encoder 31.

[0235] In the diagnosis mode, the closing operation of the door 80 does not have to be started from the fully open position. Similarly, in the diagnosis mode, the opening operation of the door 80 does not have to be performed to the fully open position. Specifically, in the diagnosis mode, it is sufficient that the fully closed position of the door 80 and the DCS signal changing from off to on (during the closing operation) or from on to off (during the opening operation) can be observed. Therefore, for example, in the diagnosis mode, the closing operation of the door 80 may be performed from a position slightly moved in the opening direction from the fully closed position, or the closing operation of the door 80 may be ended at a position corresponding to immediately after the DCS signal is observed to change from on to off. This makes it possible to shorten the operation time of the door 80 in the diagnosis mode, and as a result, it is possible to suppress the time required for abnormality diagnosis regarding the position of the DCS 60 of the door 80 and the DCS abutment portion 213, thereby improving efficiency.

[0236] The door control device 100 performs abnormality diagnosis on the DCS 60 and the position of the DCS abutment portion 213 based on the position of the door 80 during opening and closing operations in the diagnosis mode and the measurement data of the DCS signal.

[0237] For example, the door control device 100 acquires (estimates) evaluation indexes related to the positions of the DCS 60 and the DCS abutment portion 213 in accordance with the following procedures (A-1) to (A-5).

[0238] (A-1) The door control device 100 acquires the timing (time t0) at which the DCS signal switches from OFF (L level) to ON (H level) based on the position of the door 80 during the closing operation in the diagnosis mode and the time-series measurement data of the output (DCS signal) of the DCS 60. Time t0 corresponds to the timing of the rise of the DCS signal.

[0239] The door control device 100 may also acquire the timing (time t3) at which the DCS signal switches from ON (H level) to OFF (L level) based on the position of the door 80 during the opening operation in the diagnosis mode and the time-series measurement data of the output (DCS signal) of the DCS 60. Time t3 corresponds to the falling edge of the DCS signal.

[0240] (A-2) The door control device 100 estimates the time t1 based on the acquired time t0 and the time difference Δt1 assumed between the timing (time t1) when the DCS 60 is physically turned on and the timing (time t0) when the DCS signal is switched from off to on. The timing when the DCS 60 is physically turned on means the timing when the B contact of the DCS 60 is physically turned on.

[0241] Specifically, the door control device 100 may calculate the time t0 by going back from the acquired time t1 by a time difference Δt1. The time difference Δt1 is determined in advance through, for example, an experiment or a simulation regarding the closing operation of the door 80 in the diagnosis mode.

[0242] The door control device 100 may estimate the time t4 based on the acquired time t3 and the time difference Δt2 between the timing (time t4) when the DCS 60 is physically turned off and the timing (time t3) when the DCS signal is switched from on to off. The timing when the DCS 60 is physically turned off means the timing when the B contact of the DCS 60 is physically turned off.

[0243] Specifically, the door control device 100 may calculate the time t4 by going back from the acquired time t3 by the time difference Δt2. The time difference Δt2 is determined in advance, for example, through an experiment or a simulation regarding the closing operation of the door 80 in the diagnosis mode. The time differences Δt1 and Δt2 may be the same or different.

[0244] The time differences Δt1 and Δt2 are caused, for example, by a delay in the DCS signal resulting from a low-pass filter in a circuit that receives the on / off state of the B contact of the DCS 60. Alternatively, the time difference Δt1 may be ignored and the timing at which the DCS signal switches from off to on may be regarded as the timing (time t1) at which the DCS 60 is physically turned on. This is because it is possible to define evaluation criteria (for example, upper limit value Sth1 and lower limit value Sth2 described below) taking into consideration that an evaluation index (for example, dimension S of a variable part described below) contains an error resulting from the time difference Δt1. The same may be true for the time difference Δt2. In this case, step (A-2) is omitted.

[0245] (A-3) The door control device 100 estimates the position P1 of the door 80 at time t1 when the door 80 is closed, based on the time-series measurement data of the position of the door 80 when the door 80 is closed in the diagnosis mode and the estimation result at time t1.

[0246] In addition, the door control device 100 may estimate the position P4 of the door 80 at time t4 during the opening operation of the door 80 based on the time-series measurement data of the position of the door 80 during the opening operation of the door 80 in the diagnosis mode and the estimation result at time t4.

[0247] (A-4) The door control device 100 acquires the fully closed position P2 of the door 80 based on the time-series measurement data of the position of the door 80 during the closing operation of the door 80 in the diagnosis mode.

[0248] For example, even if the door 80 reaches the fully closed position P2, the door control device 100 continues to drive the door 80 in the closing direction for at least a certain period of time. Therefore, the door panels 80A, 80B are maintained in a state in which they are pressed against each other by the motor 30 for at least a certain period of time in the fully closed position during the closing operation of the door 80. Therefore, the door control device 100 can acquire, as the fully closed position P2 of the door 80, the position of the door 80 at which there is no longer any change in the time-series data of the position of the door 80 during the closing operation of the door 80.

[0249] Furthermore, the door control device 100 may obtain the fully closed position P2 of the door 80 based on time-series measurement data of the position of the door 80 during the opening operation of the door 80 in the diagnosis mode.

[0250] For example, the door control device 100 acquires the start position of the opening operation of the door 80 as the fully closed position P2.

[0251] The order of steps (A-1) to (A-4) may be changed as appropriate.

[0252] (A-5) The door control device 100 acquires (estimates) evaluation indexes related to the positions of the DCS 60 and the DCS abutment portion 213 based on the acquired position P1 and the fully closed position P2 of the door 80.

[0253] For example, the door control device 100 estimates the dimension S of the variable part (hereinafter simply referred to as "variable part") of the DCS 60 and the DCS abutment part 213 in the front-rear direction of the railcar 1 or the opening / closing direction of the door 80 when the door 80 is in a fully closed state as an evaluation index. The variable part means a part whose dimension (length) changes in the front-rear direction of the railcar 1 or the opening / closing direction of the door 80. Specifically, the variable part is a part between the abutment part 213B and the main body part 213A (i.e., the spring part 213D) and a part of the movable contact 62 protruding from the housing of the DCS 60. In this case, the door control device 100 can estimate the dimension of the variable part as an evaluation index by subtracting the difference between the already acquired position P1 and the fully closed position P2 of the door 80 from the reference value S0 of the dimension S of the variable part. (S=S0-|P1-P2|). The reference value S0 corresponds to the sum of the dimension of the spring portion 213D in the longitudinal direction of the railway vehicle 1 or the opening / closing direction of the door 80 in the state shown in FIG. 8 and the dimension of the movable contact 62 protruding from the housing of the DCS 60.

[0254] Furthermore, the door control device 100 may acquire (estimate) an evaluation index related to the position of the DCS 60 or the DCS abutment portion 213 based on the acquired position P4 and the fully closed position P2 of the door 80.

[0255] For example, the door control device 100 estimates the dimension S of the variable part of the door 80 in the fully closed state as the evaluation index, as described above. In this case, the door control device 100 can estimate the dimension of the variable part as the evaluation index by subtracting the difference between the acquired position P4 of the door 80 and the fully closed position P2 from the reference value S0 of the dimension S of the variable part (S=S0-|P4-P2|).

[0256] In addition, the door control device 100 may acquire (estimate) evaluation indexes related to the positions of the DCS 60 and the DCS abutment portion 213 by performing the following procedures (B-2) to (B-5) instead of the above-mentioned procedures (A-2) to (A-5).

[0257] (B-2) The door control device 100 acquires the position P0 of the door 80 at the time (time t0) when the DCS signal switches from off to on based on the time series measurement data of the position of the door 80 during the closing operation of the door 80 in the diagnostic mode and the time t0 already acquired in step (A-1).

[0258] In addition, the door control device 100 may acquire the position P3 of the door 80 at the timing (time t3) when the DCS signal switches from on to off based on the time series measurement data of the position of the door 80 during the opening operation of the door 80 in the diagnostic mode and the time t3 already acquired in step (A-1).

[0259] (B-3) The door control device 100 acquires the fully closed position P2 of the door 80 based on time-series measurement data of the position of the door 80 during the closing operation of the door 80 in the diagnosis mode.

[0260] The door control device 100 may obtain the fully closed position P2 of the door 80 based on time-series measurement data of the position of the door 80 during the opening operation of the door 80 in the diagnosis mode.

[0261] (B-4) The door control device 100 calculates a travel distance TL2 of the door 80 from when the DCS signal is switched from OFF to ON until the door 80 reaches the fully closed position, based on the acquired position P0 and fully closed position P2 of the door 80.

[0262] Specifically, the door control device 100 calculates the difference between the already acquired position P0 of the door 80 and the fully closed position P2 as the moving distance TL2 (TL2=|P1-P2|).

[0263] Furthermore, the door control device 100 may calculate a travel distance TL3 of the door 80 from the start of the opening operation of the door 80 to when the DCS signal switches from ON to OFF, based on the already acquired position P3 of the door 80 and the fully closed position P2.

[0264] Specifically, the door control device 100 calculates the difference between the already acquired position P3 of the door 80 and the fully closed position P2 as the moving distance TL3 (TL3=|P3-P2|).

[0265] (B-5) The door control device 100 estimates the dimension S of the variable portion of the door 80 when it is fully closed based on the travel distance TL1 during the time difference Δt1 between when the DCS 60 is physically turned on during the closing operation of the door 80 and when the DCS signal is switched on, and the previously acquired travel distance TL2.

[0266] Specifically, the door control device 100 obtains (estimates) the dimension S of the variable portion when the door 80 is in the fully closed state by subtracting the movement distances TL1, TL2 of the door 80 from the reference value S0 of the dimension S of the variable portion (S=S0-TL1-TL2).

[0267] The moving distance TL1 is, for example, predefined based on the control pattern of the speed V2 in the diagnosis mode and the above-mentioned time difference Δt1. The moving distance TL1 may also be estimated (calculated) based on the time series data of the actual speed of the door 80 in the diagnosis mode and the time difference Δt1.

[0268] In addition, the door control device 100 may estimate the dimension S of the variable part when the door 80 is fully closed based on the travel distance TL4 during the time difference Δt2 from when the DCS 60 is physically turned off during the opening operation of the door 80 to when the DCS signal is switched off, and the previously acquired travel distance TL3.

[0269] Specifically, the door control device 100 obtains (estimates) the dimension S of the variable portion when the door 80 is fully closed by subtracting the movement distance TL3 of the door 80 from the reference value S0 of the dimension S of the variable portion and adding the movement distance TL4 of the door 80 (S=S0-TL3+TL4).

[0270] The moving distance TL4 is, for example, predefined based on the control pattern of the speed V2 in the diagnosis mode and the above-mentioned time difference Δt2. The moving distance TL4 may also be estimated (calculated) based on the time series data of the actual speed of the door 80 in the diagnosis mode and the time difference Δt2.

[0271] Instead of the dimension S, the value obtained by subtracting the travel distance TL2 or the travel distance TL3 from the reference value S0 may be used as the evaluation index for the position of the DCS 60 or the DCS abutment portion 213. This is because the evaluation criteria can be specified taking into consideration that the travel distances TL1 and TL4 corresponding to the time differences Δt1 and t2 are not reflected in the evaluation index. In this case, step (B-5) is omitted.

[0272] When the dimension S of the variable portion of the estimated result is not within a predetermined range defined by an upper limit value Sth1 and a lower limit value Sth2, the door control device 100 determines that there is an abnormality in the position of the DCS 60 or the DCS abutment portion 213. The predetermined range may or may not include the upper limit value Sth1. Similarly, the predetermined range may or may not include the lower limit value Sth2. The upper limit value Sth1 is set to a value smaller than the reference value S0, and the lower limit value Sth2 is set to a value larger than the minimum length of the spring portion 213D.

[0273] In addition, the door control device 100 may diagnose the presence or absence of signs of abnormality regarding the DCS 60 of the target door 80 or the position of the DCS abutment portion 213, based on the history of the results of abnormality diagnosis (the dimension S of the variable portion) for the target door 80.

[0274] Furthermore, the door control device 100 may be able to use the diagnosis results (dimension S of the variable portion) of many doors 80, which corresponds to big data (see Figs. 16 to 19). In this case, the door control device 100 may apply machine learning (unsupervised learning) such as clustering based on the information of the diagnosis results of many doors 80, and diagnose the presence or absence of signs of abnormality regarding the DCS 60 of the target door 80 or the position of the DCS abutment portion 213.

[0275] In this way, the door control device 100 can acquire (estimate) an evaluation index related to the position of the DCS 60 and the DCS abutment portion 213 based on the position of the door 80 during the opening and closing operation of the door 80 in the diagnosis mode and the time-series measurement data of the DCS signal. This allows the door control device 100 to perform an abnormality diagnosis related to the position of the DCS 60 and the DCS abutment portion 213 using the evaluation index.

[0276] In addition, in the diagnosis mode, the position of the door 80 and the time series data of the DCS signal when the door 80 is opened or closed at a speed V2 lower than the speed V1 in the normal mode can be used. This makes it possible to suppress the amount of movement of the door 80 during the period corresponding to the time difference between the physical on / off switching of the DCS 60 and the on / off switching of the DCS signal. Therefore, it is possible to suppress errors in the evaluation index related to the positions of the DCS 60 and the DCS abutment portion 213 caused by the time difference. As a result, the door control device 100 can improve the accuracy of abnormality diagnosis related to the positions of the DCS 60 and the DCS abutment portion 213.

[0277] <Example of abnormality diagnosis for doors> A specific example of abnormality diagnosis regarding the position of the DCS 60 or the DCS contact portion 213 using the above diagnostic method will be described.

[0278] <Example 1> Fig. 22 is a diagram showing a first example of the position of the door 80 and the change over time of the DCS signal when the door 80 is closed in the diagnosis mode. Specifically, Fig. 22 shows a specific example of the change over time of the position of the door 80 and the DCS signal when the door 80 is closed in a normal case in which the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is fully closed corresponds to the state shown in Fig. 11 above.

[0279] 22 correspond to the above-mentioned times t0 and t1, and positions P10, P11, and P12 in FIG. 22 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0280] In this example, as shown in FIG. 11, when the door 80 is in a fully closed state, all the movable contacts 62 are pushed into the housing of the DCS 60 and the distance between the main body 213A and the abutment 213B is at a maximum value. That is, in this example, when the door 80 is in a fully closed state, the DCS abutment 213 on the door 80 side presses the DCS 60 to an extent that the ON state of the DCS 60 can be reliably maintained, while avoiding a state in which the DCS 60 is pressed too much such that the spring 213D is greatly contracted. Therefore, as shown in FIG. 22, in this example, the distance between the position P11 at the timing (time t11) when the DCS 60 is physically turned ON and the position P12 corresponding to the fully closed position of the door 80 is in an appropriate range that is neither too large nor too small. As a result, the dimension S of the variable portion obtained by subtracting the distance between the positions P11 and P12 from the reference value S0 is included in a predetermined range defined by the upper limit Sth1 and the lower limit Sth2. Therefore, in this example, the door control device 100 can diagnose that there is no abnormality in the DCS 60 or the position of the DCS abutment portion 213 and that they are normal.

[0281] <Second Example> Fig. 23 is a diagram showing a second example of the position of the door 80 and the change over time of the DCS signal when the door 80 is closed in the diagnosis mode. Specifically, Fig. 23 shows a specific example of the change over time of the position of the door 80 and the DCS signal when the door 80 is closed in a case where the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is fully closed is abnormal, corresponding to the state shown in Fig. 12 above.

[0282] 23 correspond to the above-mentioned times t0 and t1, and positions P20, P21, and P22 of the door 80 in FIG. 23 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0283] As shown in FIG. 12, in this example, the movable contact 62 is fully pushed into the housing of the DCS 60 and the spring portion 213D is greatly contracted to the minimum length. That is, in this example, when the door 80 is in a fully open state, the DCS abutment portion 213 on the door 80 side is in a state of over-pushing the DCS 60 in such a manner that the spring portion 213D is greatly contracted, far exceeding the level at which the ON state of the DCS 60 can be reliably maintained. Therefore, as shown in FIG. 23, in this example, the distance between the position P21 at the timing (time t21) when the DCS 60 is physically turned ON and the position P22 corresponding to the fully closed position of the door 80 is too large compared to the above-mentioned first example (FIG. 22). As a result, the dimension S of the variable portion obtained by subtracting the distance between the positions P21 and P22 from the reference value S0 becomes smaller relative to the lower limit value Sth2 and deviates from the predetermined range defined by the upper limit value Sth1 and the lower limit value Sth2 in the small direction. Therefore, in this example, the door control device 100 can diagnose that there is an abnormality in the position of the DCS 60 or the DCS abutment portion 213.

[0284] <Example 3> Fig. 24 is a diagram showing a third example of the position of the door 80 and the change over time of the DCS signal when the door 80 is closed in the diagnosis mode. Specifically, Fig. 24 shows a specific example of the position of the door 80 and the change over time of the DCS signal when the door 80 is closed in a case where the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is fully closed is abnormal, corresponding to the state shown in Fig. 10 above.

[0285] 24 correspond to the above-mentioned times t0 and t1, and positions P30, P31, and P32 of the door 80 in FIG. 24 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0286] As shown in FIG. 10, in this example, when the door 80 is in the fully closed state, the movable contact 62 is pushed into the housing of the DCS 60 to some extent, but the pushing amount is the limit of the state where the B contact of the DCS 60 can be turned on. That is, in this example, when the door 80 is in the fully closed state, the DCS abutment portion 213 on the door 80 side cannot press the DCS 60 to an extent where the ON state of the DCS 60 can be reliably maintained. Therefore, as shown in FIG. 24, although the DCS 60 is turned on near the fully closed position of the door 80, it returns to OFF due to a slight change in the pushing amount, and then it is turned on again and the ON state is maintained. Then, the position P31 at the timing (time t31) when the DCS 60 is physically turned on is the same as the position P32 corresponding to the fully closed position of the door 80. As a result, the dimension S of the variable portion becomes the reference value S0 larger than the upper limit value Sth1, and deviates from the predetermined range defined by the upper limit value Sth1 and the lower limit value Sth2 in the large direction. Therefore, in this example, the door control device 100 can diagnose that there is an abnormality in the position of the DCS 60 or the DCS abutment portion 213.

[0287] Furthermore, in this example, the door control device 100 performs an abnormality diagnosis on the positions of the DCS 60 and the DCS abutment portion 213 based on the latest timing (time t30) among multiple timings (twice in this example) at which the DCS signal switches from OFF to ON during the closing operation of the door 80. This allows the position P1 (position P31) of the door 80 at the timing (time t31) when the DCS 60 is physically turned ON to be as close as possible to the fully closed position P2 (position P32) of the door 80. As a result, the door control device 100 can reliably diagnose that there is an abnormality on the positions of the DCS 60 and the DCS abutment portion 213 in the abnormal state in which the DCS abutment portion 213 is not pressing the DCS 60 to an extent that the ON state of the DCS 60 can be maintained when the door 80 is in the fully closed state.

[0288] As described above, the diagnosis mode may be executed by the opening operation of the door 80. In this case, when there are multiple timings at which the DCS signal switches from ON to OFF during the opening operation of the door 80, the door control device 100 may perform an abnormality diagnosis for the DCS 60 or the position of the DCS abutment portion 213 based on the earliest timing among the multiple timings.

[0289] <Example 4> Even if the DCS abutment portion 213 can abut against the movable contact 62 when the door 80 is closing, there may be an abnormality in which the DCS 60 cannot be switched from OFF to ON. In this case, the door control device 100 can diagnose that there is an abnormality in the position of the DCS 60 or the DCS abutment portion 213 because the DCS 60 is not turned OFF even when the door 80 is fully closed.

[0290] <How to notify the diagnosis results> 25 and 26 are diagrams showing a third example of a display screen of the diagnosis result of the abnormality diagnosis regarding the door 80. Specifically, Figs. 25 and 26 are diagrams showing a specific example (display screen 2500) of the display screen of the diagnosis result of the abnormality diagnosis regarding the DCS 60 of the door 80 and the position of the DCS abutment portion 213. Figs. 25 and 26 show the display screen 2500 displayed on the display device 3H of the UI device 3 in each state before and after the support device 2 acquires the diagnosis result from the door control device 100 after a diagnosis command is transmitted from the support device 2 to the door control device 100.

[0291] 25 and 26, a display screen 2500 includes graphs 2501 and 2502 that represent measurement data of physical quantities related to the operation of door 80 during the closing operation of door 80. Graphs 2501 and 2502 are displayed side by side in the vertical direction (up and down direction) from top to bottom in the display area in the lower half of display screen 2500.

[0292] A graph 2501 represents the change over time in the position of the door 80 from the fully open state to the fully closed state during the closing operation of the door 80.

[0293] Graph 2502 represents the time series change in the state of the DCS signal during the closing operation of door 80 from the fully open state to the fully closed state.

[0294] The display screen 2500 also includes a display area 2503 for displaying an evaluation index (specifically, the dimension S of the variable portion described above) used in abnormality diagnosis regarding the position of the DCS 60 or the DCS contact portion 213.

[0295] The display screen 2500 also displays a drawing 2504 of the parts corresponding to the abnormality diagnosis, including the DCS 60 ("DCS Switch Case") and the DCS abutment portion 213 ("DCS Push Rod"). The drawing 2504 shows an evaluation index (dimension S of the variable portion) for the abnormality diagnosis ("Target").

[0296] The display area 2503 and the drawing 2504 are arranged side by side in the horizontal direction (left-right direction) from the left in the upper half area of ​​the display screen 1600.

[0297] 25, before the support device 2 acquires the diagnosis result from the door control device 100, graphs 2501 and 2502 display waveforms (dashed lines) of reference data corresponding to a normal state regarding the positions of the DCS 60 and the DCS abutment portion 213. Similarly, before the support device 2 acquires the diagnosis result from the door control device 100, a display area 2503 displays an evaluation index (dimension S of the variable portion) of the reference data corresponding to a normal state regarding the positions of the DCS 60 and the DCS abutment portion 213.

[0298] 26, when the support device 2 acquires a diagnosis result from the door control device 100, the waveform of the reference data corresponding to a normal state and the waveform of the measurement data acquired for abnormality diagnosis are displayed in graphs 2501 and 2502 in a superimposed manner. Similarly, when the support device 2 acquires a diagnosis result from the door control device 100, the display area 2503 displays the evaluation indexes acquired for abnormality diagnosis along with the evaluation indexes of the reference data corresponding to a normal state, arranged vertically. This allows the user to compare the measurement data with the reference data.

[0299] As shown in FIGS. 25 and 26, the evaluation index of the reference data (dimension S of the variable portion) indicates a normal state, and therefore, naturally, the display area 2503 displays that the diagnosis result based on the evaluation index of the reference data is normal ("Pass"). On the other hand, as shown in FIG. 26, the evaluation index (dimension S of the variable portion) acquired (calculated) for abnormality diagnosis is relatively far from the reference data. Therefore, the display area 2503 displays that the diagnosis result based on the evaluation index of the measurement data is abnormal ("Fail"). This enables the user to recognize that the diagnosis result of the current abnormality diagnosis indicates that there is an abnormality related to the position of the DCS 60 or the DCS abutment portion 213.

[0300] Furthermore, by comparing the evaluation index of the reference data in display area 2503 with the evaluation index of the measurement data, the user can estimate the amount of adjustment when performing maintenance to adjust the position of DCS 60 or DCS abutment portion 213. For example, the user can estimate the difference between the evaluation index of the reference data in display area 2503 and the evaluation index of the measurement data as the amount of adjustment.

[0301] Furthermore, by comparing the positions of the door 80 in the reference data and the measurement data when the DCS signal is switched from off to on in graph 2501, the user can estimate the amount of adjustment when performing maintenance to adjust the position of the DCS 60 or the DCS abutment portion 213. For example, the user can estimate the difference between the positions of the door 80 in the reference data and the measurement data when the DCS signal is switched from off to on as the amount of adjustment.

[0302] 26, a pop-up 2505 is displayed on the display screen 2500, indicating the content of the maintenance corresponding to the diagnosis result based on the measurement data. In this example, the pop-up 2505 displays text information indicating the content of the maintenance, which urges the user to check the attachment position of the DCS abutment portion 213 ("DCS push rod"). The pop-up 2505 also displays text information indicating the amount of adjustment to be made when performing maintenance to adjust the position of the DCS abutment portion 213. This allows the user to easily understand the method of maintenance for abnormalities related to the position of the DCS 60 or the DCS abutment portion 213 and the amount of adjustment to be made at that time.

[0303] Note that text information indicating only either the maintenance method for dealing with an abnormality related to the position of the DCS 60 or the DCS abutment portion 213 or the amount of adjustment at that time may be displayed in the pop-up 2505. Also, the pop-up 2505 may be omitted.

[0304] In this way, in this example, the user can understand the diagnosis results of the abnormality diagnosis regarding the positions of the DCS 60 and the DCS abutment portion 213 and the contents of the maintenance corresponding to the diagnosis results through the application screen (display screen 2500) of the display device 3H. Therefore, the user can appropriately carry out maintenance corresponding to the diagnosis results of the abnormality diagnosis regarding the positions of the DCS 60 and the DCS abutment portion 213.

[0305] Incidentally, the display screen for notifying the result of the abnormality diagnosis regarding the position of the DLS 70 or the locking device contact portion 232 may have a form similar to that of the display screen 2500 of this embodiment.

[0306] [Effect] Next, the operation of the diagnostic device according to this embodiment will be described.

[0307] In a first example aspect of this embodiment, the support device includes an acquisition unit and a notification unit. The support device is, for example, the support device 2 described above. The acquisition unit is, for example, the diagnosis result acquisition unit 23 described above. The notification unit is, for example, the diagnosis result notification unit 24 described above. Specifically, the acquisition unit acquires information on the diagnosis result of an abnormality related to a door of a railway vehicle. The railway vehicle is, for example, the railway vehicle 1 described above. The door is, for example, the door 80 described above. Then, based on the information acquired by the acquisition unit, the notification unit notifies the user of the diagnosis result so that the user can recognize the contents of the maintenance of the door corresponding to the diagnosis result. Specifically, based on the information acquired by the acquisition unit, the notification unit may notify information representing the diagnosis result and information on the maintenance of the door corresponding to the diagnosis result.

[0308] Also, in a first aspect of this embodiment, a method for assisting in the maintenance of railway vehicle doors may be provided. Specifically, the method for assisting in the maintenance of railway vehicle doors includes an acquisition step and a notification step. More specifically, in the notification step, the assistance device acquires information on the diagnosis result of an abnormality related to the railway vehicle doors. Then, in the notification step, the assistance device notifies the user of the diagnosis result based on the information acquired in the acquisition step so that the user can recognize the contents of the door maintenance corresponding to the diagnosis result. Specifically, in the notification step, the assistance device may notify the user of information representing the diagnosis result and information on the door maintenance corresponding to the diagnosis result based on the information acquired in the acquisition step.

[0309] Also, in a first aspect of this embodiment, a program may be provided for causing a computer corresponding to the assistance device to function as assistance means for railway vehicle door maintenance. Specifically, the program causes the computer to execute an acquisition step and a notification step. More specifically, in the acquisition step, information on a diagnosis result of an abnormality related to the railway vehicle door is acquired. Then, in the notification step, the diagnosis result is notified based on the information acquired in the acquisition step so that the user can recognize the contents of the door maintenance corresponding to the diagnosis result. Specifically, in the notification step, information representing the diagnosis result and information on the door maintenance corresponding to the diagnosis result may be notified based on the information acquired in the acquisition step.

[0310] This allows the support device to allow the user to recognize the contents of door maintenance corresponding to the diagnosis result, and therefore the support device can support more appropriate maintenance of the doors of the railway vehicle.

[0311] Furthermore, in a second aspect of this embodiment, on the premise of the above-mentioned first aspect, the information on door maintenance may include first information indicating the contents of door maintenance, or second information for guiding to the first information. The first information is, for example, the text information of the above-mentioned pop-up 1606 or the text information of the pop-up 2506. The second information is, for example, information indicating a reference page of the above-mentioned maintenance manual for the door 80. The second information may also be an icon image to be operated for displaying the reference part of the above-mentioned maintenance manual, or link information such as a URL for accessing the maintenance manual.

[0312] This allows the user to understand the details of the door maintenance that corresponds to the diagnosis result.

[0313] In addition, in a third aspect of this embodiment, based on the second aspect described above, the first information may include at least one of information representing a method of door maintenance, information representing a target part of the door maintenance, and information representing an adjustment amount for the target part.

[0314] This allows the user to understand the door maintenance method, the parts to be maintained, and the amount of adjustment for the parts to be maintained that correspond to the diagnosis results.

[0315] In addition, in a fourth aspect of this embodiment, assuming any one of the first to third aspects described above, the information regarding door maintenance may include third information suggesting the contents of the door maintenance, or fourth information for guiding to the third information.

[0316] This allows the user to understand the details of door maintenance corresponding to the diagnosis result from the information suggesting the details of door maintenance.

[0317] In addition, in a fifth aspect of this embodiment, on the premise of the above-mentioned fourth aspect, the third information may include a drawing of a target part of the door maintenance. The drawing of the target part of the door maintenance is, for example, the above-mentioned drawing 2504. Furthermore, the fourth information may include information for guiding to the drawing. Then, the notification unit may cause the display unit to display the diagnosis result and the drawing of the target part of the door maintenance, or may notify the diagnosis result and information for guiding to the drawing.

[0318] This allows the user to understand the structure of the part of the door that is the target of maintenance, for example, and thereby understand the details of the maintenance.

[0319] In addition, in a sixth aspect of the present embodiment, on the premise of the above-mentioned fourth or fifth aspect, the information on the diagnosis result may include time-series measurement data of a measurement object that represents the state of the door when the door is operated to obtain the diagnosis result, or data representing the result of frequency analysis on the measurement data. Furthermore, the third information may include data on the measurement data or the result of the frequency analysis. Then, the notification unit may cause the display unit to display the diagnosis result and the measurement data or the result of the frequency analysis. The display unit is, for example, the display device 3H of the above-mentioned UI device 3. The measurement data is, for example, the measurement data that is drawn as a time-series waveform on the above-mentioned graphs 1601 to 1604 or graphs 2501 and 2502.

[0320] This allows the user to estimate the cause of the door abnormality or its symptoms from the time-series measurement data of the physical quantities related to the door operation during the door operation performed to obtain the diagnosis results and the data of the result of frequency analysis of the measurement data. Therefore, the user can understand the contents of the door maintenance according to the cause of the door abnormality or its symptoms.

[0321] In addition, in a seventh aspect of the present embodiment, on the premise of the sixth aspect described above, the notification unit may cause the display unit to display measurement data or data resulting from frequency analysis for a plurality of types of measurement targets. The plurality of types of measurement targets are, for example, the running resistance of the door 80, the position of the door 80, the speed of the door 80, and the current of the motor 30 that drives the door 80, which correspond to the above-mentioned graphs 1601 to 1604.

[0322] This allows the user to more appropriately estimate the cause of door abnormalities and their symptoms by, for example, comparing measurement data and frequency analysis data for multiple types of measurement targets, and therefore the user can more appropriately understand the contents of door maintenance corresponding to the diagnosis results.

[0323] In addition, in an eighth aspect of this embodiment, based on the above-mentioned sixth or seventh aspect, the third information may include data representing a standard corresponding to the measurement data or the data resulting from the frequency analysis together with the measurement data or the data resulting from the frequency analysis. The data representing a standard corresponding to the measurement data or the data resulting from the frequency analysis is, for example, the above-mentioned standard data. The notification unit may then cause the display unit to display the measurement data or the data resulting from the frequency analysis and the data representing a standard corresponding to the measurement data or the data resulting from the frequency analysis so that the user can compare them.

[0324] This allows the user to more appropriately estimate the cause of the door abnormality or its symptoms by comparing the measurement data or the data of the frequency analysis result with the reference data, and therefore the user can more appropriately understand the contents of the door maintenance corresponding to the diagnosis result.

[0325] In addition, in a ninth aspect of this embodiment, assuming any one of the sixth to eighth aspects described above, the measurement data or the data resulting from frequency analysis may be data corresponding to a type of measurement target that allows the cause of an abnormality to be identified based on a plurality of different patterns that may occur in the data.

[0326] This allows the user to more appropriately and easily estimate the cause of the abnormality by using the measurement data of the type of object to be measured and the data of the results of the frequency analysis, depending on which of a plurality of different patterns the abnormality corresponds to. Therefore, the user can more appropriately and easily understand the contents of the door maintenance corresponding to the diagnosis result.

[0327] In addition, in a tenth aspect of this embodiment, assuming any one of the above-mentioned fourth to ninth aspects, the third information may include information indicating the cause of an abnormality or a symptom of the abnormality related to the door of the railway vehicle. The information indicating the cause of an abnormality or a symptom of the abnormality related to the door of the railway vehicle is, for example, the text information of the above-mentioned pop-up 1606. Then, when the diagnosis result indicates that there is an abnormality or a symptom of the abnormality related to the door, or indicates a relatively high state with respect to a predetermined standard of the degree of abnormality, the notification unit may notify the information indicating the cause of the abnormality or the symptom.

[0328] This allows the user to determine for himself or herself what maintenance should be done on the door based on the cause of the door abnormality and its symptoms.

[0329] In an eleventh aspect of the present embodiment, on the premise of any one of the first to tenth aspects described above, the acquisition unit may acquire information on a diagnosis result of an abnormality regarding the position of a switch for detecting a fully closed state or a locked state of the door or a pressing member for pressing a movable contact of the switch. The switch is, for example, the above-mentioned DCS 60 or DLS 70. The pressing member is, for example, the above-mentioned DCS abutment portion 213 or the locking device abutment portion 232. The notification unit may notify the diagnosis result so that an adjustment amount of the position of the switch or the pressing member corresponding to the diagnosis result can be recognized. More specifically, the notification unit may notify the diagnosis result and information on the adjustment amount of the position of the switch or the pressing member. The information on the adjustment amount of the position of the switch or the pressing member is, for example, the text information of the above-mentioned popup 2505 or the measurement data and reference data of the graphs 2501 and 2502.

[0330] This allows the user to grasp the adjustment amount of the switch that detects whether the door is fully closed and the pressing member that presses the movable contact of the switch.

[0331] Although the embodiments have been described in detail above, the present disclosure is not limited to such specific embodiments, and various modifications and variations are possible within the scope of the gist described in the claims. [Explanation of symbols]

[0332] 1. Railway vehicles 2 Support equipment 3 User Interface Devices 3H display device 10 Upper device 12 Vehicle control device 14 Door opening and closing device 16 Transmission Equipment 21 Diagnostic item selection section 22 Diagnostic command transmission unit 23. Diagnostic result acquisition unit 24. Diagnosis result notification section 30 Motor 31 Encoder 32 Current Sensor 50 Locking device 60 DCS 70 DLS 80 Doors 80A Door Panel 80B Door Panel 100 Door control device 150 Power supply 200 Door drive mechanism 210 Rack 211 Rack section 211A Rack Gear 212 Connecting part 213 DCS contact part 213A Main body 213B Contact part 213C Connection 213D Spring part 213E Mounting part 220 racks 221 Rack section 221A Rack Gear 222 Connecting part 222A Inclined section 223 Lock pin contact part 223A Rock Hall 224 Spring parts 225 Support rod 225A Rod part 225B Expanded diameter part 230 Lock pin 231 Pin section 232 Locking device contact part 1600 display screen 1601~1604 Graph 1601A Line 1605 Display area 1606 Popup 2500 display screen 2501,2502 Graph 2503 Display area 2504 Drawings 2505 Popup PBM Pushback Mechanism SYS Maintenance Support System

Claims

1. an acquisition unit that acquires information regarding a diagnosis result of an abnormality related to a door of a railway vehicle; and a notification unit that notifies information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result based on the information acquired by the acquisition unit. Support equipment.

2. The information regarding the door maintenance includes first information indicating the contents of the door maintenance, or second information for guiding to the first information. The support device according to claim 1 .

3. The first information includes at least one of information representing a method of maintenance of the door, information representing a target portion of the door maintenance, and information representing an adjustment amount of the target portion of the door maintenance. The support device according to claim 2 .

4. The information regarding the door maintenance includes third information suggesting the contents of the door maintenance, or fourth information for guiding to the third information.

4. An assistance device according to any one of claims 1 to 3.

5. The third information includes a drawing of a target portion of the door for maintenance, The fourth information includes information for guiding to the drawing, The notification unit displays the diagnosis result and the drawing on a display unit, or notifies the diagnosis result and information for guiding to the drawing.

5. The support device according to claim 4.

6. The information regarding the diagnosis result includes time-series measurement data of a measurement object representing a state of the door during the operation of the door performed to obtain the diagnosis result, or data representing a result of a frequency analysis of the measurement data, the third information includes the measurement data or data of the result of the frequency analysis, The notification unit causes a display unit to display the diagnosis result and the measurement data or the data of the result of the frequency analysis.

5. The support device according to claim 4.

7. The notification unit causes the display unit to display the measurement data or the data of the result of the frequency analysis for a plurality of types of the measurement objects.

7. The support device according to claim 6.

8. the third information includes, together with the measurement data or the data resulting from the frequency analysis, data representing a reference corresponding to the measurement data or the data resulting from the frequency analysis; the notification unit causes the display unit to display the measurement data or the data resulting from the frequency analysis and data representing a reference corresponding to the measurement data or the data resulting from the frequency analysis so as to enable a user to compare the data.

7. The support device according to claim 6.

9. The measurement data or the data of the result of the frequency analysis is data corresponding to the measurement target of a type that allows a cause of the abnormality to be identified based on a plurality of different patterns that may occur in the data.

7. The support device according to claim 6.

10. the third information includes information indicating a cause of the abnormality or a symptom thereof, the notification unit notifies information indicating a cause of the abnormality or the symptom thereof when the diagnosis result indicates the presence of the abnormality or a symptom thereof, or indicates a relatively high state of the degree of the abnormality with respect to a predetermined standard.

5. The support device according to claim 4.

11. the acquisition unit acquires information regarding the diagnosis result of the abnormality related to a position of a switch for detecting a fully closed state or a locked state of the door or a pressing member for pressing a movable contact of the switch, The notification unit notifies the diagnosis result and information related to an adjustment amount of a position of the switch or the pressing member corresponding to the diagnosis result.

4. An assistance device according to any one of claims 1 to 3.

12. An acquisition step in which the support device acquires information regarding a diagnosis result of an abnormality related to a door of the railway vehicle; a notification step of notifying, by the support device, information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result, based on the information acquired in the acquisition step; How to help.

13. On the computer, An acquisition step of acquiring information regarding a diagnosis result of an abnormality related to a door of the railcar; a notification step of notifying information representing the diagnosis result and information regarding maintenance of the door corresponding to the diagnosis result, based on the information acquired in the acquisition step; program.

Images