Diagnostic device, diagnostic system, diagnostic method, and program

Abstract

To provide a technology capable of more appropriately performing diagnosis of abnormality related to a position of a member for pressing a switch for detecting a fully closed state of a door and movable contact of the switch.SOLUTION: According to one embodiment, a door control device 100 performs diagnosis of an abnormality related to at least one of a position of a DCS 60 or a DCS contact part 213 for pressing a movable contact 62 of the DCS 60, based on a position P1 of a door 80 when an output of the DCS 60 for detecting a fully closed state of the door 80 of a railway vehicle 1 is switched from off to on during a closing operation of the door 80, or a position P4 of the door 80 when it is switched from on to off during an opening operation of the door 80, and a fully closed position P2 of the door 80.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to diagnostic devices and the like. [Background technology]

[0002] For example, a method is known in which data on the on and off timings of a switch that detects the fully closed state of a door is used to diagnose (detect) an abnormality in the position of the switch (misalignment of the mounting position) (see Patent Document 1).

[0003] Furthermore, by invoking the method of Patent Document 1, it is also possible to diagnose abnormalities related to the position of a member provided on the door side for pressing the movable contact of the switch. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-82993 Summary of the Invention [Problem to be solved by the invention]

[0005] However, there may be a time difference between the physical on / off timing of the switch and the on / off timing of the switch's output (signal). For example, a circuit that receives the switch signal may have a built-in low-pass filter to prevent chattering, and the delay caused by the low-pass filter may cause the time difference. Therefore, depending on the size of the time difference, the accuracy of diagnosing abnormalities related to the position of the switch or pressing member may deteriorate.

[0006] In view of the above problems, an object of the present invention is to provide a technology that can more appropriately diagnose abnormalities related to the switch that detects the fully closed state of the door and the position of the member that presses the movable contact of the switch. [Means for solving the problem]

[0007] In order to achieve the above object, in one embodiment of the present disclosure, When an output of a switch for detecting a fully closed state of a railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, a diagnosis is made for an abnormality related to the position of at least one of the switch and a pressing member for pressing a movable contact of the switch, based on a first position of the door when the output of the switch is switched from OFF to ON during a closing operation of the door or when the output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. A diagnostic device is provided.

[0008] In another embodiment of the present disclosure, and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of the railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. A diagnostic device is provided.

[0009] In still another embodiment of the present disclosure, A diagnostic device that diagnoses abnormalities related to at least one of the position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of the position of the door during a closing operation or an opening operation of the door of a railway vehicle and the output of a switch that detects a fully closed state of the door, If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. A diagnostic device is provided.

[0010] In still another embodiment of the present disclosure, The door of the railway vehicle is caused to perform a closing or opening operation, and diagnosing an abnormality related to at least one of the position of the switch and the position of a pressing member for pressing a movable contact of the switch based on a first position of the door when an output of the switch that detects the fully closed state of the door is switched from OFF to ON during a closing operation of the door or when an output of the switch that detects the fully closed state of the door is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. A diagnostic system is provided.

[0011] In still another embodiment of the present disclosure, The door of the railway vehicle is caused to perform a closing or opening operation, and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door, or from when the fully closed state of the door is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. A diagnostic system is provided.

[0012] In still another embodiment of the present disclosure, A diagnostic system that performs a closing or opening operation of a door of a railway vehicle, and diagnoses an abnormality related to at least one of the position of the switch and a pressing member for pressing a movable contact of the switch, based on time-series data of the position of the door during the closing operation or the opening operation of the door and the output of a switch that detects a fully closed state of the door, If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. A diagnostic system is provided.

[0013] In still another embodiment of the present disclosure, The information processing device When an output of a switch for detecting a fully closed state of a railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, a diagnosis is made for an abnormality related to the position of at least one of the switch and a pressing member for pressing a movable contact of the switch, based on a first position of the door when the output of the switch is switched from OFF to ON during a closing operation of the door or when the output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. A diagnostic method is provided.

[0014] In still another embodiment of the present disclosure, The information processing device and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of the railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. A diagnostic method is provided.

[0015] In still another embodiment of the present disclosure, A diagnostic method in which an information processing device diagnoses an abnormality in at least one of a position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of a position of the door during a closing operation or an opening operation of the door of a railway vehicle and an output of a switch that detects a fully closed state of the door, the method comprising: If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. A diagnostic method is provided.

[0016] In still another embodiment of the present disclosure, In the information processing device, and diagnosing an abnormality in at least one of the position of the switch and the position of a pressing member for pressing a movable contact of the switch, based on a first position of the door when an output of a switch that detects a fully closed state of the railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. Programs are offered.

[0017] In still another embodiment of the present disclosure, In the information processing device, and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of the railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. Programs are offered.

[0018] In still another embodiment of the present disclosure, A program that causes an information processing device to diagnose an abnormality related to at least one of the position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of a position of the door of a railway vehicle during a closing operation or an opening operation of the door and an output of a switch that detects a fully closed state of the door, the information processing device diagnoses the presence or absence of the abnormality based on the latest timing of the switch output being switched from off to on when there are multiple timings when the switch output is switched from off to on during the door closing operation, or based on the earliest timing of the switch output being switched from on to off when there are multiple timings when the switch output is switched from on to off during the door opening operation; Programs are offered. [Effects of the Invention]

[0019] According to the above-described embodiment, it is possible to more appropriately diagnose abnormalities in the switch that detects whether the door is fully closed or in the position of the member that presses the movable contact of the switch. [Brief explanation of the drawings]

[0020] [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. [Figure 2] 1 is a schematic diagram showing an example of the layout of doors and door drive mechanisms of a railway vehicle. FIG. [Figure 3] 1 is a schematic diagram showing an example of the layout of doors and door drive mechanisms of a railway vehicle. FIG. [Figure 4] 1 is a schematic diagram showing an example of the layout of doors and door drive mechanisms of a railway vehicle. FIG. [Figure 5] 1 is a schematic diagram showing an example of the layout of doors and door drive mechanisms of a railway vehicle. FIG. [Figure 6] 1 is a schematic diagram showing an example of the layout of doors and door drive mechanisms of a railway vehicle. FIG. [Figure 7] FIG. 10 is a diagram showing a first example of the positional relationship between a DCS and a DCS contact portion. [Figure 8] FIG. 10 is a diagram showing a second example of the positional relationship between the DCS and the DCS contact portion. [Figure 9] FIG. 10 is a diagram showing a third example of the positional relationship between the DCS and the DCS contact portion. [Figure 10] FIG. 10 is a diagram showing a fourth example of the positional relationship between the DCS and the DCS contact portion. [Figure 11]FIG. 10 is a diagram showing a first example of the change over time in the door position and the DCS signal during the door closing operation in the diagnostic mode. [Figure 12] FIG. 10 is a diagram illustrating a second example of the change over time in the door position and the DCS signal during the door closing operation in the diagnostic mode. [Figure 13] FIG. 10 is a diagram illustrating a third example of the change over time in the door position and the DCS signal during the door closing operation in the diagnostic mode. [Figure 14] FIG. 10 is a sequence diagram showing a first example of a process for diagnosing an abnormality related to a door. [Figure 15] FIG. 10 is a sequence diagram showing a second example of the process of diagnosing an abnormality related to a door. [Figure 16] FIG. 10 illustrates another example of a diagnostic system. [Figure 17] FIG. 10 is a sequence diagram showing a third example of the process of diagnosing an abnormality related to a door. [Figure 18] FIG. 10 is a diagram illustrating yet another example of a diagnostic system. [Figure 19] FIG. 10 is a sequence diagram showing a fourth example of the process of diagnosing an abnormality related to a door. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment will be described with reference to the drawings.

[0022] [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.

[0023] 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 an 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 the door 80 and the door drive mechanism 200 when the door 80 is fully closed and locked. FIG. 3 is a schematic diagram showing the door 80 and the door drive mechanism 200 when the door 80 is fully closed and unlocked. FIG. 4 is a schematic diagram showing 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 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 starts). FIG. 6 is a schematic diagram showing the door 80 and the door drive mechanism 200 in a fully open state.

[0024] The railway vehicle 1 may be a single-car formation consisting of one vehicle, or may be a multi-car formation consisting of a plurality of vehicles connected in a chain.

[0025] 1 to 6, the railway vehicle 1 includes a host device 10, a motor 30, an encoder 31, a current sensor 32, a locking device 50, a DCS (Door Close Switch) 60, a DLS (Door Lock Switch) 70, and a door 80. The railway vehicle 1 also includes a door control device 100, a power supply 150, an input contactor 151, and a door drive mechanism 200.

[0026] The host device 10 includes a vehicle control device 12 , a door opening / closing operation device 14 , and a transmission device 16 .

[0027] The vehicle control device 12 controls the operation of the railway vehicle 1. For example, if the railway vehicle 1 is a multi-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, for example, if 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).

[0028] 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 input / output 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. This allows, for example, during the manufacturing process, workers to install programs 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 programs 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 via the communication interface. The interface device may also include multiple different types of interface devices according to the types of communication lines to be connected.

[0029] When the railway vehicle 1 is stopped at a station or the like, the vehicle control device 12 outputs a stop signal indicating that the vehicle is stopped to the door control device 100. In addition, the vehicle control device 12 outputs to the door control device 100 an open command that instructs the door 80 to open or a close command that instructs the door 80 to close, which is input from the door opening / closing operation device 14.

[0030] 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 the 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 the 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 state where it can run. Therefore, when the interlock signal transitions from an L level to an H level, the railway vehicle 1 is able to run.

[0031] The door opening / closing operation device 14 is used by a crew member (e.g., a conductor) of the railway vehicle 1 to open or 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. Furthermore, 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.

[0032] The transmission device 16 relays signals between the vehicle control device 12 and the door control device 100 for each of the multiple doors 80 of the railway vehicle 1.

[0033] 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). The transmission device 16 may also 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.

[0034] 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 also be a linear motor driven by three-phase AC driving power. The motor 30 may also be a DC motor driven by DC.

[0035] The encoder 31 detects the rotational position and displacement position of the motor 30. For example, if the motor 30 is a rotating machine, the encoder 31 detects the rotational position (rotation angle) of the rotary shaft of the motor 30. The encoder 31 detects, for example, the rotational position (rotation angle) of the rotary shaft of the motor 30 during one rotation and the number of rotations. The encoder 31 outputs a detection signal including information related to the rotational position of the rotary shaft of the motor 30, and the detection signal is input to the door control device 100. As a result, 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.

[0036] 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 in two of the three power lines (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 in the U-phase power line, and the current sensor 32B detects the current in the W-phase power line. The current sensor 32 may also include a current sensor that detects the current in 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 externally to the door control device 100. Detection signals of the current sensors 32 (current sensors 32A and 32B) are received by a normal system control unit 110 and a standby system control unit 120, which will be described later.

[0037] 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.

[0038] 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. Furthermore, because the locking device 50 is a self-retaining type, the coil 52 remains protruding from the housing even after the energization of the coil 52 is released. This allows the door 80 to remain unlocked.

[0039] 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, locking the door 80. Furthermore, because 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.

[0040] The DCS 60 detects the open / closed state of the door 80 of the railway vehicle 1. Specifically, the DCS 60 detects the fully closed state of the door 80 of the railway vehicle 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. For example, as shown in FIGS. 2 to 6, the DCS 60 is attached to the body side of the railway vehicle 1. Furthermore, the DCS 60 may be provided on the door 80 side of the railway vehicle 1, specifically, on a component (e.g., coupling portions 212, 222) that moves together with the door 80 or the door 80 (door panels 80A, 80B).

[0041] The DCS 60 includes fixed contacts 61A1 and 61A2, fixed contacts 61B1 and 61B2, and a movable contact 62.

[0042] The fixed contacts 61A1 and 61A2 are arranged in series with the wiring 13 so as to separate the wiring 13. Hereinafter, the fixed contacts 61A1 and 61A2 may be referred to as "contacts A" of the DCS 60 for convenience.

[0043] The fixed contacts 61B1 and 61B2 are arranged in series with the wiring 101 in such a manner that both ends of the wiring 101 connected to the door control device 100 are separated. This allows the door control device 100 to grasp the on / off state of the DCS 60 based on the H-level signal and the L-level signal that indicate the conductive state and non-conductive state of the fixed contacts 61B1 and 61B2, respectively. Hereinafter, the fixed contacts 61B1 and 61B2 may be referred to as the "B contacts" of the DCS 60 for convenience.

[0044] The movable contact 62 moves in the axial direction (the up-down direction in FIG. 1 ) to bring either the A-contact (fixed contacts 61A1 and 61A2) or the B-contact (fixed contacts 61B1 and 61B2) of the DCS 60 into conduction. When no external force is applied, the DCS 60 is in a state where 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, as described below, when the movable contact 62 is pressed by the action of the door 80, the A-contact is turned ON and the B-contact is turned OFF with the A-contact being made conductive 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 made conductive by the movable contact 62 with the B-contact being ON and the A-contact is OFF. In the following description, it is assumed that the ON / OFF of the DCS 60 refers to the ON / OFF of the A-contact.

[0045] 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.

[0046] The DLS 70 detects whether the door 80 is locked or not. 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 of the door 80 when the lock pin 230 moves to the locked position.

[0047] The DLS 70 includes fixed contacts 71A1 and 71A2, fixed contacts 71B1 and 71B2, and a movable contact 72.

[0048] The fixed contacts 71A1 and 71A2 are arranged in series with the wiring 13 so as to separate the wiring 13. Hereinafter, the fixed contacts 71A1 and 71A2 may be referred to as "contacts A" of the DLS 70 for convenience.

[0049] Fixed contacts 71B1 and 71B2 are arranged in series with wiring 102 in a manner that divides wiring 102, both ends of which are connected to door control device 100. This allows door control device 100 to grasp the on / off state of DLS 70 based on H-level signals and L-level signals that indicate the conductive and non-conductive states of fixed contacts 71B1 and 71B2, respectively. Hereinafter, fixed contacts 71B1 and 71B2 may be referred to as the "B contacts" of DLS 70 for convenience.

[0050] The movable contact 72 moves along the axial direction (the up-and-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, i.e., 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.

[0051] 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.

[0052] When the door 80 is fully closed and locked, and both the A contacts of the DCS 60 and the DLS 70 are turned on, the wiring 13 becomes conductive, and the interlock signal becomes H level.

[0053] The door 80 is a double-swing sliding door provided in openings (hereinafter referred to as "door openings") on the left and right sides of the body of the railway vehicle 1. The door 80 includes door panels 80A and 80B.

[0054] The door panels 80A, 80B open and close the door 80 (the door opening of the vehicle body) via the door drive mechanism 200 using 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 movements in the front-to-rear direction around the center of the front-to-rear direction of the door opening of the vehicle body.

[0055] Door edge 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 edge rubbers 81A and 81B are provided in the range from the upper end to the lower end at the joint of the door panels 80A and 80B.

[0056] 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 plurality of doors 80 provided on the railway vehicle 1.

[0057] 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 input / output with 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, during the manufacturing process, workers to install programs and various data used for 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 programs and various data used for processing related to the control of the door 80 may also be downloaded from the higher-level device 10 via the communication interface. The interface device may also include multiple different types of interface devices according to the types of communication lines to be connected.

[0058] 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.

[0059] 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.

[0060] The power supply circuit 111 functions as a drive power source for various devices in the normal system control unit 110. The power supply circuit 111 generates relatively low voltage (e.g., 5 V or less) power for driving the devices in the normal system control unit 110, using relatively high voltage (e.g., 100 V) power supplied from the power supply 150 to the door control device 100.

[0061] The communication unit 112 performs two-way communication with the transmission device 16 outside the door control device 100 .

[0062] The input signal detection unit 113 detects various signals input from outside the door control device 100.

[0063] Furthermore, the input signal detection unit 113 may perform various processes based on the detected signal.

[0064] 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 control by the sequence unit 114 and the motor control unit 115 from among 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 perform 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.

[0065] 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, etc. from the vehicle control device 12. Furthermore, 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, etc., using signals from the encoder 31, the DCS 60, the DLS 70, etc.

[0066] The motor control unit 115 controls the driving of the motor 30 in response to a control command related to the opening and closing operation of the door 80 from the sequence unit 114 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 for 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 rotation shaft, and the like, using detection signals from the encoder 31, the current sensor 32, and the like input from the input signal detection unit 113.

[0067] Motor drive unit 116 uses DC power input from power supply 150 to generate and output three-phase AC power for driving motor 30. 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. Two DC power lines on the input side of motor drive unit 116 are connected to power supply 150 via input contactor 151, and three power lines on the output side are connected to motor 30 via switching circuit unit 130.

[0068] The locking / unlocking drive 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, thereby driving the locking device 50 (pin 51) in the locking or unlocking direction of the door 80. The locking / unlocking drive unit 117 has positive and negative DC power lines on its input side connected to a power source 150 through an input contactor 151. The locking / unlocking drive unit 117 has two sets of positive and negative DC power 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 drive unit 117 has semiconductor switches that can switch between conduction and non-conduction between the input DC power line and each of the set of DC power lines on the output side and the other set of DC power lines, and switches the semiconductor switches on and off. Specifically, when an unlock command is input from the sequence unit 114, the locking / unlocking 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. Furthermore, when a locking command is input from the sequence unit 114, the locking / unlocking 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.

[0069] 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 serves as a backup function for the normal control unit 110. As a result, the door control device 100 is provided with the standby control unit 120 in addition to the normal control unit 110, thereby achieving redundancy of the control system related to the opening and closing operation of the door 80. Specifically, if 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.

[0070] 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.

[0071] The power supply circuit 121 has the same hardware configuration and functions as the power supply circuit 111 of the utility system control unit 110. The communication unit 122 has the same hardware configuration and functions as the communication unit 112 of the utility system control unit 110. The input signal detection unit 123 has the same hardware configuration and functions as the input signal detection unit 113 of the utility system control unit 110. The sequence unit 124 has the same hardware configuration and functions as the sequence unit 114 of the utility system control unit 110. The motor control unit 125 has the same hardware configuration and functions as the motor control unit 115 of the utility system control unit 110. The motor drive unit 126 has the same hardware configuration and functions as the motor drive unit 116 of the utility system control unit 110. The locking / unlocking drive unit 127 has the same hardware configuration and functions as the locking / unlocking drive unit 117 of the utility system control unit 110. Therefore, detailed description thereof will be omitted.

[0072] The switching circuit unit 130 switches between a state in which the motor drive unit 116 and the motor 30 are electrically connected and a state in which the motor drive unit 126 and the motor 30 are electrically connected. Specifically, the three-phase AC output power lines of the motor drive units 116 and 126 are connected to the input side of the switching circuit unit 130, and the three-phase AC input power line extending from the motor 30 is connected to the output side of the switching circuit unit 130. The switching circuit unit 130 switches between a state in which the output power line of the motor drive unit 116 and the input power line of the motor 30 are electrically connected to each other and a state in which the output power line of the motor drive unit 126 and the input power line of the motor 30 are electrically connected to each other.

[0073] 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 standby system control unit 120 controls the opening and closing operation of the door 80, the switching circuit unit 130 switches to a state in which the motor drive unit 126 and the motor 30 are electrically connected.

[0074] 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 connected to its input side from the locking / unlocking drive unit 117 and the locking / unlocking drive unit 127, respectively, and 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 are connected to the two sets of input power lines of the locking device 50, and a state in which the two sets of output power lines of the locking / unlocking drive unit 127 are connected to the two sets of input power lines of the locking device 50.

[0075] 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 when the normal system control unit 110 controls the opening and closing operations of the door 80. On the other hand, when an abnormality occurs in the normal system control unit 110 and the state shifts to a state in which the standby system control unit 120 controls the opening and closing operations of the door 80, 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.

[0076] The power supply 150 supplies DC power of a predetermined voltage (e.g., 100 volts) to various devices on the railway vehicle 1, including the motor 30, the locking device 50, and the door control device 100. The power supply 150 includes, for example, a battery and an auxiliary power supply. The battery supplies DC power to various devices on 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 on the railway vehicle 1.

[0077] Input contactor 151 is provided in a power circuit between power source 150 and various devices including door control device 100, and switches on / off the power supply to various devices of railway vehicle 1 by opening and closing the power circuit. 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 railway vehicle 1. This starts the power supply to various devices of railway vehicle 1 including door control device 100, and railway vehicle 1 starts up. 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 railway vehicle 1. This stops (shuts off) the power supply to various devices of railway vehicle 1 including door control device 100, and railway vehicle 1 stops.

[0078] 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 locks and unlocks the door 80 in accordance with the operation of the locking device 50 (pin 51).

[0079] The door drive mechanism 200 includes racks 210 and 220 and a lock pin 230 .

[0080] 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.

[0081] Rack portion 211 is a member extending in the longitudinal direction of railway vehicle 1. Rack gear 211A is provided on the underside of rack portion 211. Rack portion 211 is arranged above the door opening of railway vehicle 1 (car body) and slightly above the rotation shaft of motor 30, which is arranged so that the rotation shaft is along the width direction (left-right direction) of railway vehicle 1. This allows a pinion gear arranged coaxially with the rotation shaft of motor 30 to engage with rack gear 211A on the underside of rack portion 211. Therefore, rack portion 211 can be moved in the longitudinal direction of railway vehicle 1 in accordance with the rotation of motor 30.

[0082] 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 of the connecting portion 212. 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 "door rail").

[0083] The connecting portion 212 is provided with a DCS abutment portion 213 .

[0084] 2 and 3, when door panels 80A, 80B transition to a fully closed state in which they are completely closed, DCS abutment portion 213 abuts against movable contact 62 of DCS 60, and movable contact 62 is pressed. This presses the movable contact, turning on DCS 60. On the other hand, as shown in FIGS. 4 to 6, when door panel 80A transitions to a state other than the fully closed state in which it is completely closed, DCS abutment portion 213 transitions to a state in which it does not abut against movable contact 62 of DCS 60, and DCS 60 is turned off.

[0085] As described above, when the DCS 60 is provided on the door side, the DCS abutment portion 213 may be provided on the car body side of the railway vehicle 1.

[0086] The rack 220 is attached to the upper end of the door panel 80B. The rack 220 includes a rack portion 221, a connecting portion 212, and a lock pin abutment portion 223.

[0087] The rack portion 221 is a member that extends 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 engage 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.

[0088] 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 railway vehicle 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).

[0089] Here, rack gear 211A engages with a pinion gear coaxial with motor 30 from above, and rack gear 221A engages with it from below, so that racks 210 and 220 can be moved in opposite directions in accordance with the rotation of motor 30. Therefore, one motor 30 can realize the opening and closing operations of two door panels 80A and 80B.

[0090] An inclined portion 222A is provided at the upper end of the connecting portion 222, and is inclined downward toward the center of the door opening in the longitudinal direction of the railway vehicle 1.

[0091] 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 the opposite direction to the direction in which the rack portion 221 extends. The lock pin abutment portion 223 is provided with a lock hole 223A.

[0092] The lock hole 223A is a recess provided on 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.

[0093] 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.

[0094] The pin portion 231 is provided so as to extend in the vertical direction.

[0095] The locking device abutment portion 232 is attached to the upper end of the pin portion 231, and is provided so as to extend horizontally from the connecting portion with the pin portion 231, specifically in the direction opposite to the door opening in the longitudinal direction of the railway vehicle 1. 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 due to the weight of the lock pin 230.

[0096] 3 to 6, when pin 51 of locking device 50 is in a protruding state, the lower end of pin portion 231, which is connected to locking device abutment portion 232, is located above inclined portion 222A of rack 220, and pin portion 231 does not engage with lock hole 223A. Therefore, rack 220 can move without being affected by the position of lock pin 230, and door 80 (door panels 80A, 80B) is in a state where it can move in the opening and closing directions.

[0097] 2, when the pin 51 of the locking device 50 is retracted, the lower end of the pin portion 231 is positioned below the inclined portion 222A of the rack 220. Furthermore, when the door 80 is fully closed, the pin portion 231 is positioned closer to the lock pin abutment portion 223 than the inclined portion 222A in the longitudinal direction of the railway vehicle 1. Therefore, when the pin 51 of the locking device 50 is retracted with the door 80 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 also 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, movement of the door panels 80A, 80B connected to the racks 210, 220 is restricted, and the door panels 80A, 80B are locked.

[0098] [Positional relationship between DCS and DCS contact point] Next, with reference to FIGS. 7 to 10, a description will be given of changes in the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is closed and opened.

[0099] Fig. 7 is a diagram showing a first example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 8 is a diagram showing a second example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 9 is a diagram showing a third example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Fig. 10 is a diagram showing a fourth example of the positional relationship between the DCS 60 and the DCS abutment portion 213. Specifically, Figs. 7 to 10 are diagrams showing the positional relationship between the DCS 60 and the DCS abutment portion 213 in chronological order when the door 80 is closing or opening.

[0100] As shown in FIGS. 7 to 10, 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.

[0101] Main body 213A, via connecting portion 213C, holds abutting portion 213B at its tip so that it can move within a predetermined range in the longitudinal 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 relative to the longitudinal direction. When the door rail is attached parallel to the longitudinal direction, the opening and closing direction of door 80 coincides with the longitudinal direction of railcar 1.

[0102] 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 213A and the DCS 60 (movable contact 62) in the longitudinal direction of the railway vehicle 1 or in the opening and closing direction of the door 80.

[0103] Connection portion 213C is provided to extend from abutment portion 213B toward main body portion 213A in the longitudinal direction of railcar 1 or the opening / closing direction of door 80, and its tip is inserted into main body portion 213A. As a result, main body portion 213A can hold the tip of connection portion 213C therein and guide it so that it can move within a predetermined range in the longitudinal direction of railcar 1 or the opening / closing direction of door 80. The predetermined range is defined, for example, so that the maximum value of the distance between abutment portion 213B and main body portion 213A in the longitudinal direction of railcar 1 or the opening / closing direction of door 80 is shorter than the natural length of spring portion 213D and the minimum value is equal to or greater than the minimum length of spring portion 213D.

[0104] Spring portion 213D is wound around connecting portion 213C and disposed between main body portion 213A and abutting portion 213B. This, in addition to the function of main body portion 213A, makes it possible to maintain the distance between abutting portion 213B and main body portion 213A in the longitudinal direction of railway vehicle 1 or in the opening / closing direction of door 80 at a predetermined value that is shorter than the natural length of spring portion 213D when abutting portion 213B and DCS 60 are not in contact with each other.

[0105] 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 longitudinal direction of the railcar 1 or in the opening and closing direction of the door 80 and penetrates in the left-right direction. Two bolts BLT are then threaded through the elongated hole into corresponding screw holes (internal threads) in the connecting portion 212, spaced apart from each other in the longitudinal direction, thereby fixing the DCS abutment portion 213 to the connecting portion 212. This allows, for example, during the manufacturing process, an operator to adjust the mounting position of the DCS abutment portion 213 in the longitudinal direction of the railcar 1 or in the opening and closing direction of the door 80, within a range determined by the length of the elongated hole and the mounting span of the two bolts BLT.

[0106] When the door 80 is closing, the positional relationship between the DCS 60 and the DCS abutment portion 213 normally changes in the order of Figures 7, 8, and 9. Furthermore, if the door 80 continues to close from the state shown in Figure 9, it may reach the state shown in Figure 10.

[0107] Fig. 7 shows the positional relationship between the DCS 60 and the DCS abutment portion 213 at the timing when 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. 8 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 abutment portion 213B during the closing operation of the door 80, causing the DCS 60 to switch from OFF to ON. Fig. 9 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 completely into the housing of the DCS 60 by abutment portion 213B, causing the abutment portion 213B to abut against the housing of the DCS 60 during the closing operation of the door 80. Figure 10 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 Figure 9 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 Figure 9 to the state in Figure 10, 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.

[0108] 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 9, 8, and 7. Furthermore, when the door 80 is closed and the positional relationship is as shown in Figure 10, the relationship changes in the order of Figures 10, 9, 8, and 7.

[0109] Fig. 10 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. 9 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 in Fig. 10 to the state in Fig. 9, the position of the abutment portion 213B does not change in the fore-and-aft 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 its shortest length in the state in Fig. 10, expands. Fig. 8 shows the positional relationship between the DCS 60 and the DCS abutment 213 at the timing when the restriction on the movable contact 62 by the abutment 213B is gradually released during the opening operation of the door 80, causing the movable contact 62 of the DCS 60 to come out from the housing of the DCS 60 and switching the DCS 60 from on to off. Fig. 7 shows the positional relationship between the DCS 60 and the DCS abutment 213 at the timing when the restriction on the movable contact 62 by the abutment 213B is completely released during the opening operation of the door 80, causing the movable contact 62 of the DCS 60 to protrude to its maximum extent from the housing of the DCS 60. When transitioning from the state in Fig. 9 to the states in Figs. 8 and 7, the distance in the front-to-rear direction between the abutment 213B and the main body 213A is maintained at the maximum value within the range in which the abutment 213B can move relative to the main body 213A, and the movable contact 62 gradually comes out from inside the DCS 60 as the door 80 moves in the opening direction. This is because the movable contact 62 is biased to project outside the housing of the DCS 60.

[0110] [Door abnormality diagnosis] Next, continuing to refer to FIGS. 7 to 10, an abnormality diagnosis regarding the door 80 (hereinafter simply referred to as "abnormality diagnosis") will be described. Hereinafter, in this item, the entity that performs the abnormality diagnosis regarding the door 80 will be described for convenience as the diagnosis system SYS.

[0111] The door control device 100 (motor control unit 125) has a normal mode and a diagnosis mode as control modes regarding the opening and closing operation of the door 80.

[0112] The normal mode is a control mode regarding the opening and closing operation of the door 80 that is used when passengers of the railway vehicle 1 board and alight from the door opening. In the normal mode, the door control device 100 operates (runs) the door 80 at a constant speed V1.

[0113] The diagnosis mode is a control mode regarding the opening and closing operation of the door 80 that is used when measuring (acquiring) data for performing an abnormality diagnosis regarding the door 80. For example, in the diagnosis mode of the door 80, the door control device 100 operates (runs) the door 80 at a constant speed V2. Thereby, the measurement accuracy of the position of the door 80 based on the output of the encoder 31 described later can be improved. Also, the speed V2 may be smaller than the speed V1 (V2 < V1). Thereby, the measurement accuracy of the position of the door 80 based on the output of the encoder 31 described later can be improved.

[0114] Incidentally, the speed V2 may be the same as the speed V1, or may not be a constant speed.

[0115] The abnormality diagnosis includes, for example, diagnosis of the presence or absence of an abnormality and diagnosis of the degree of an abnormality, etc. Also, the abnormality diagnosis may include diagnosis of the presence or absence of signs of an abnormality. The abnormality diagnosis regarding the door 80 includes, for example, abnormality diagnosis regarding the positions of the DCS60 and the DCS abutting portion 213.

[0116] An abnormality in the position of the DCS 60 or the DCS abutment portion 213 refers to a state in which the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is fully closed is not within a predetermined range in the longitudinal direction of the railcar 1 or the opening / closing direction of the door 80. The predetermined range is defined, for example, as a range in which, when the door 80 is fully closed, the amount PD by which the abutment portion 213B pushes the movable contact 62 into the housing of the DCS 60 is relatively large compared to a threshold value PDth and the length L of the spring portion 213D is relatively large compared to a threshold value Lth. The threshold value PDth is defined in advance, for example, as the minimum amount of push of the movable contact 62 that can reliably turn the DCS 60 on. As a result, when the positional relationship between the DCS 60 and the DCS abutment portion 213 when the door 80 is fully closed 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. Furthermore, threshold value Lth is set in a range that is smaller than the natural length of spring portion 213D and larger than the minimum length thereof, thereby ensuring an appropriate distance between main body portion 213A and contact portion 213B when door 80 is in the fully closed state.

[0117] 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. 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.

[0118] The following description will be given on the assumption that the diagnosis mode is a control mode for measuring data for diagnosing abnormalities related to the position of the DCS 60 or the DCS contact portion 213.

[0119] In the diagnostic mode, the door control device 100 performs a closing operation of the door 80 from the fully open position to the fully closed position at a speed V2, for example. Also, in the diagnostic mode, the door control device may perform an opening operation of the door 80 from the fully closed position to the fully open position at a speed V2.

[0120] The door control device 100 measures (acquires) time-series data on 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 on 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.

[0121] In the diagnostic mode, the closing operation of the door 80 does not have to be initiated from the fully open position. Similarly, in the diagnostic mode, the opening operation of the door 80 does not have to be performed to the fully open position. Specifically, in the diagnostic 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 diagnostic 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 terminated at a position corresponding to immediately after the DCS signal is observed to change from on to off. This shortens the operating time of the door 80 in the diagnostic mode, thereby reducing the time required for abnormality diagnosis regarding the DCS 60 of the door 80 and the position of the DCS abutment portion 213, thereby improving efficiency.

[0122] The diagnostic system SYS performs abnormality diagnosis on the position of the DCS 60 and the DCS contact portion 213 based on the position of the door 80 during opening and closing operations in the diagnostic mode and the measurement data of the DCS signal.

[0123] For example, the diagnostic system SYS acquires (estimates) evaluation indices relating to the positions of the DCS 60 and the DCS contact portion 213 in accordance with the following procedures (A-1) to (A-5).

[0124] (A-1) The diagnostic system SYS 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 diagnostic 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.

[0125] Furthermore, the diagnostic system SYS may 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 diagnostic mode and the time-series measurement data of the output (DCS signal) of the DCS 60. Time t3 corresponds to the timing of the falling edge of the DCS signal.

[0126] (A-2) The diagnostic system SYS estimates time t1 based on the acquired time t0 and the assumed time difference Δt1 between the timing (time t1) when the DCS 60 is physically turned on and the timing (time t0) when the DCS signal switches from off to on. The timing when the DCS 60 is physically turned on refers to the timing when the B contact of the DCS 60 is physically turned on.

[0127] Specifically, the diagnostic system SYS may calculate the time t1 by going back a time difference Δt1 from the acquired time t0. The time difference Δt1 is determined in advance through, for example, an experiment or simulation regarding the closing operation of the door 80 in the diagnostic mode.

[0128] Furthermore, the diagnostic system SYS may estimate 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.

[0129] Specifically, the diagnostic system SYS may calculate time t4 by going back from the previously acquired time t3 by a time difference Δt2. The time difference Δt2 is determined in advance, for example, through experiments or simulations regarding the closing operation of the door 80 in the diagnostic mode. The time differences Δt1 and Δt2 may be the same or different.

[0130] The time differences Δt1 and Δt2 are caused, for example, by a delay in the DCS signal due to a low-pass filter in the 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 considered the timing (time t1) at which the DCS 60 is physically turned on. This is because evaluation criteria (e.g., upper limit Sth1 and lower limit Sth2, described below) may be defined taking into account the fact that an evaluation index (e.g., the dimension S of a variable portion, described below) contains an error due to the time difference Δt1. The same may be true for the time difference Δt2. In this case, step (A-2) is omitted.

[0131] (A-3) The diagnostic system SYS 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 diagnostic mode and the estimation result at time t1.

[0132] In addition, the diagnostic system SYS 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 diagnostic mode and the estimation result at time t4.

[0133] (A-4) The diagnostic system SYS 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 diagnostic mode.

[0134] For example, even after 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 where they are pressed against each other by the motor 30 for at least a certain period of time at the fully closed position during the closing operation of the door 80. Therefore, the diagnostic system SYS can acquire, as the fully closed position P2 of the door 80, the position of the door 80 when 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.

[0135] Furthermore, the diagnostic system SYS may acquire 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 diagnostic mode.

[0136] For example, the diagnostic system SYS acquires the start position of the opening operation of the door 80 as the fully closed position P2.

[0137] The order of steps (A-1) to (A-4) may be changed as appropriate.

[0138] (A-5) The diagnostic system SYS acquires (estimates) evaluation indexes relating to the positions of the DCS 60 and the DCS contact portion 213 based on the acquired position P1 and fully closed position P2 of the door 80.

[0139] For example, the diagnostic system SYS estimates, as an evaluation index, the dimension S of the variable portion (hereinafter simply referred to as the "variable portion") of the DCS 60 and the DCS contact portion 213 in the longitudinal direction of the railcar 1 or the opening / closing direction of the door 80 when the door 80 is fully closed. The variable portion refers to a portion whose dimension (length) changes in the longitudinal direction of the railcar 1 or the opening / closing direction of the door 80. Specifically, the variable portion is the portion between the contact portion 213B and the main body portion 213A (i.e., the spring portion 213D) and the portion of the movable contact 62 extending from the housing of the DCS 60. In this case, the diagnostic system SYS can estimate the dimension of the variable portion as an evaluation index by subtracting the difference between the previously acquired position P1 of the door 80 and the fully closed position P2 from the reference value S0 of the dimension S of the variable portion (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 and the dimension of the movable contact 62 protruding from the housing of the DCS 60 in the state of FIG.

[0140] Furthermore, the diagnostic system SYS may acquire (estimate) evaluation indexes relating to the positions of the DCS 60 and the DCS contact portion 213 based on the acquired position P4 and fully closed position P2 of the door 80.

[0141] For example, the diagnostic system SYS estimates the dimension S of the variable portion of the door 80 in the fully closed state as an evaluation index, as described above. In this case, the diagnostic system SYS can estimate the dimension of the variable portion as an 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 portion (S=S0-|P4-P2|).

[0142] In addition, the diagnostic system SYS may acquire (estimate) evaluation indexes related to the positions of the DCA 60 and the DCS contact portion 213 by performing the following procedures (B-2) to (B-5) instead of the above-mentioned procedures (A-2) to (A-5).

[0143] (B-2) The diagnostic system SYS acquires the position P0 of the door 80 at the timing (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 acquired in step (A-1).

[0144] In addition, the diagnostic system SYS 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).

[0145] (B-3) The diagnostic system SYS 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 diagnostic mode.

[0146] The diagnostic system SYS may acquire 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 diagnostic mode.

[0147] (B-4) Based on the acquired position P0 and fully closed position P2 of the door 80, the diagnostic system SYS calculates the travel distance TL2 of the door 80 from when the DCS signal switches from off to on until the door 80 reaches the fully closed position.

[0148] Specifically, the diagnostic system SYS calculates the difference between the acquired position P0 of the door 80 and the fully closed position P2 as the moving distance TL2 (TL2=|P1-P2|).

[0149] Furthermore, the diagnostic system SYS may calculate a travel distance TL3 of the door 80 from the start of the opening operation of the door 80 until the DCS signal switches from ON to OFF, based on the already acquired position P3 and fully closed position P2 of the door 80.

[0150] Specifically, the diagnostic system SYS calculates the difference between the acquired position P3 of the door 80 and the fully closed position P2 as the moving distance TL3 (TL3=|P3-P2|).

[0151] (B-5) The diagnostic system SYS estimates the dimension S of the variable part 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.

[0152] Specifically, the diagnostic system SYS obtains (estimates) the dimension S of the variable portion when the door 80 is fully closed by subtracting the movement distances TL1 and TL2 of the door 80 from the reference value S0 of the dimension S of the variable portion (S=S0-TL1-TL2).

[0153] The moving distance TL1 is determined in advance based on, for example, the control pattern of the speed V2 in the diagnosis mode and the time difference Δt1. Alternatively, the moving distance TL1 may 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.

[0154] In addition, the diagnostic system SYS may estimate the dimension S of the variable part of the door 80 when it is fully closed based on the travel distance TL4 during the time difference Δt2 between when the DCS 60 is physically turned off during the opening operation of the door 80 and when the DCS signal is switched off, and the previously acquired travel distance TL3.

[0155] Specifically, the diagnostic system SYS obtains (estimates) the dimension S of the variable part 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 part and adding the movement distance TL4 of the door 80 (S = S0 - TL3 + TL4).

[0156] The moving distance TL4 is predetermined based on, for example, the control pattern of the speed V2 in the diagnosis mode and the time difference Δt2. Alternatively, the moving distance TL4 may 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.

[0157] Instead of the dimension S, the value obtained by subtracting the travel distance TL2 or TL3 from the reference value S0 may be used as the evaluation index for the position of the DCS 60 or the DCS contact portion 213. This is because the evaluation criteria can be defined 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.

[0158] If 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 diagnostic system SYS determines that there is an abnormality in the position of the DCS 60 or the DCS contact 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 greater than the minimum length of the spring portion 213D.

[0159] In addition, the diagnostic system SYS may diagnose whether there are any 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 abnormality diagnosis results (dimension S of the variable portion) for the target door 80.

[0160] Furthermore, the diagnostic system SYS may be able to use the diagnostic results (dimensions S of the variable portions) of a large number of doors 80, which corresponds to big data (see FIGS. 16 to 19). In this case, the diagnostic system SYS may apply machine learning (unsupervised learning) such as clustering based on the information of the diagnostic results of a large number of doors 80, to diagnose whether there are any signs of abnormality regarding the DCS 60 of the target door 80 or the position of the DCS abutment portion 213.

[0161] In this way, the diagnostic system SYS can acquire (estimate) evaluation indices related to the positions of the DCS 60 and the DCS abutment portion 213 based on the position of the door 80 during the opening and closing operations of the door 80 in the diagnostic mode and the time-series measurement data of the DCS signal. This allows the diagnostic system SYS to use the evaluation indices to perform abnormality diagnosis related to the positions of the DCS 60 and the DCS abutment portion 213.

[0162] Furthermore, in the diagnostic 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 that is slower 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. This makes it possible to suppress errors in the evaluation index related to the position of the DCS 60 and the DCS abutment portion 213 that occur due to this time difference. As a result, the diagnostic system SYS can improve the accuracy of abnormality diagnosis related to the position of the DCS 60 and the DCS abutment portion 213.

[0163] [Specific example of door abnormality diagnosis] Next, a specific example of abnormality diagnosis regarding the door 80 (abnormality diagnosis regarding the DCS 60 or the position of the DCS abutment portion 213) will be described with reference to FIGS.

[0164] <Example 1> Fig. 11 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 diagnostic mode. Specifically, Fig. 11 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 state where 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. 9 above.

[0165] Note that times t10 and t11 in FIG. 11 correspond to the above-mentioned times t0 and t1, and positions P10, P11, and P12 in FIG. 11 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0166] In this example, as shown in FIG. 9 , when the door 80 is fully closed, all of the movable contacts 62 are pressed into the housing of the DCS 60, and the distance between the main body portion 213A and the abutment portion 213B is at its maximum. That is, in this example, when the door 80 is fully closed, the DCS abutment portion 213 on the door 80 presses the DCS 60 to an extent that reliably maintains the DCS 60 in its ON state, while avoiding a state in which the spring portion 213D is excessively compressed. Therefore, as shown in FIG. 11 , in this example, the distance between position P11 at the time when the DCS 60 is physically turned ON (time t11) and position P12 corresponding to the fully closed position of the door 80 is within 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 positions P11 and P12 from the reference value S0, falls within a predetermined range defined by an upper limit value Sth1 and a lower limit value Sth2. Therefore, in this example, the diagnostic system SYS can diagnose that there is no abnormality in the position of the DCS 60 or the DCS contact portion 213 and that they are normal.

[0167] <Example 2> Fig. 12 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 diagnostic mode. Specifically, Fig. 12 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. 10 above.

[0168] Note that times t20 and t21 in Figure 12 correspond to the above-mentioned times t0 and t1, and positions P20, P21, and P22 of the door 80 in Figure 12 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0169] As shown in FIG. 10 , in this example, the movable contact 62 is fully pushed into the housing of the DCS 60, and the spring portion 213D is significantly compressed to its minimum length. That is, in this example, when the door 80 is fully open, the DCS contact portion 213 on the door 80 side significantly exceeds the level at which the DCS 60 can be reliably maintained in the ON state, causing the spring portion 213D to significantly compress, thereby pushing the DCS 60 too hard. Therefore, as shown in FIG. 12 , in this example, the distance between position P21 at the time when the DCS 60 is physically turned ON (time t21) and position P22 corresponding to the fully closed position of the door 80 is larger than that in the first example ( FIG. 11 ). As a result, the dimension S of the variable portion, obtained by subtracting the distance between positions P21 and P22 from the reference value S0, is smaller than the lower limit Sth2 and deviates from the predetermined range defined by the upper limit Sth1 and the lower limit Sth2. Therefore, in this example, the diagnostic system SYS can diagnose that there is an abnormality in the position of the DCS 60 or the DCS contact portion 213.

[0170] <Example 3> Fig. 13 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 diagnostic mode. Specifically, Fig. 13 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. 8 above.

[0171] Note that times t30 and t31 in Figure 13 correspond to the above-mentioned times t0 and t1, and positions P30, P31, and P32 of the door 80 in Figure 13 correspond to the above-mentioned positions P0, P1, and fully closed position P2 of the door 80.

[0172] As shown in FIG. 8 , in this example, when the door 80 is fully closed, the movable contact 62 is pushed into the housing of the DCS 60 to some extent, but the pushing amount is just enough to turn on the B contact of the DCS 60. That is, in this example, when the door 80 is fully closed, the DCS abutment 213 on the door 80 does not press the DCS 60 enough to reliably maintain the ON state of the DCS 60. Therefore, as shown in FIG. 13 , although the DCS 60 is turned on near the fully closed position of the door 80, a slight change in the pushing amount causes it to return to the OFF state, and then it is turned on again and maintained in the ON state. Furthermore, the position P31 at the time (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 a reference value S0 that is greater than the upper limit value Sth1, and deviates significantly from the predetermined range defined by the upper limit value Sth1 and the lower limit value Sth2. Therefore, in this example, the diagnostic system SYS can diagnose that there is an abnormality in the position of the DCS 60 or the DCS contact portion 213.

[0173] Furthermore, in this example, the diagnostic system SYS diagnoses an abnormality in the positions of the DCS 60 and the DCS abutment portion 213 based on the latest timing (time t30) of multiple timings (two times in this example) at which the DCS signal switches from off to on during the closing operation of the door 80. This makes it possible to bring the position P1 (position P31) of the door 80 at the timing (time t31) when the DCS 60 is physically turned on as close as possible to the fully closed position P2 (position P32) of the door 80. As a result, when the door 80 is in the fully closed state, the diagnostic system SYS can reliably diagnose that there is an abnormality in the positions of the DCS 60 and the DCS abutment portion 213 even in an abnormal state in which the DCS abutment portion 213 is not pressing the DCS 60 to an extent that allows the DCS 60 to be maintained in the on state.

[0174] As described above, the diagnostic mode may be executed by the opening operation of the door 80. In this case, if there are multiple times when the DCS signal switches from ON to OFF during the opening operation of the door 80, the diagnostic system SYS may diagnose an abnormality in the position of the DCS 60 or the DCS abutment portion 213 based on the earliest timing among these times.

[0175] <Other examples> 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 diagnostic system SYS can diagnose that there is an abnormality in the position of the DCS 60 or the DCS abutment portion 213 because the DCS 60 does not turn OFF even when the door 80 is fully closed.

[0176] [First example of door abnormality diagnosis processing] Next, a first example of the process of diagnosing an abnormality related to the door 80 will be described with reference to FIG.

[0177] FIG. 14 is a sequence diagram showing a first example of the process of diagnosing an abnormality related to the door 80. In FIG.

[0178] In this example, the diagnostic system SYS is provided in a railway vehicle 1 and includes a host device 10 and a door control device 100.

[0179] In the present embodiment, a case will be described below in which the normal system control section 110 of the normal system control section 110 and the standby system control section 120 in the door control device 100 controls the door 80.

[0180] As shown in FIG. 14, the vehicle control device 12 of the higher-level device 10 starts an application program (hereinafter referred to as "diagnostic app") for diagnosing abnormalities related to the door 80 in response to a predetermined input from a user such as a crew member in the driver's cab or conductor's cab (step S102).

[0181] After completing the processing of step S102, the vehicle control device 12 transmits a diagnostic command to the door control device 100 via the transmission device 16 in response to a predetermined input from the user requesting the start of an abnormality diagnosis for the door 80 (step S104).

[0182] The diagnostic command may be for all doors 80 of the railway vehicle 1 to be subject to abnormality diagnosis, or may be for only some of the doors 80 of all the doors 80 of the railway vehicle 1 to be subject to abnormality diagnosis. In the latter case, the doors 80 to be subject to abnormality diagnosis out of all the doors 80 of the railway vehicle 1 are designated by input from the user, and the diagnostic command is sent only to the door control device 100 that controls the doors 80 to be subject to abnormality diagnosis.

[0183] The input signal detection unit 113 of the door control device 100 receives the diagnostic command sent in the processing of step S104 through the communication unit 112, and the motor control unit 115 of the door control device 100 transitions the control mode of the door 80 to the diagnostic mode (step S106).

[0184] When the processing of step S106 is completed, the normal system control unit 110 causes the motor control unit 115 and the locking / unlocking driving unit 117 to perform the closing operation of the door 80 corresponding to the diagnosis mode, and the input signal detection unit 113 measures data during the closing operation of the door 80 (step S108). The closing operation of the door 80 corresponding to the diagnosis mode is the closing operation of the door 80 at a speed V2. The data to be measured includes, as described above, data on the position of the door 80 during the closing operation of the door 80, data on the DLS signal, data on the speed of the door 80, etc.

[0185] In step S106, the normal system control section 110 may perform an opening operation of the door 80 corresponding to the diagnostic mode, and measure data during the opening operation of the door 80.

[0186] When the process of step S108 is completed, the input signal detection unit 113 performs an abnormality diagnosis on the door 80 based on the measurement data acquired in step S108 (step S110).

[0187] When the process of step S110 is completed, the input signal detection unit 113 transmits data on the result of the abnormality diagnosis on the door 80 in step S110 to the higher-level device 10 through the communication unit 112 (step S112).

[0188] The vehicle control device 12 of the higher-level device 10 receives the data on the result of the abnormality diagnosis regarding the door 80, which is transmitted in the process of step S112, via the transmission device 16 (step S114).

[0189] When the process of step S114 is completed, the vehicle control device 12 displays the result of the abnormality diagnosis regarding the door 80 on a display device in the driver's cab or the conductor's cab, for example (step S116).

[0190] This allows users such as crew members in the driver's cab or conductor's cab to check the results of the abnormality diagnosis regarding the door 80.

[0191] As described above, in this example, in response to a request from the user input through the host device 10, the diagnostic system SYS acquires data on the closing operation of the door 80 in the diagnostic mode in the door control device 100, and performs an abnormality diagnosis on the door 80. Then, the diagnostic system SYS causes the door control device 100 to transmit data on the result of the abnormality diagnosis on the door 80 to the host device 10, and provides the result of the abnormality diagnosis on the door 80 to the user through the host device 10.

[0192] This allows a user in the driver's cab or conductor's cab to check the results of abnormality diagnosis for all doors 80 of the railway vehicle 1. Furthermore, the amount of data exchanged between the host device 10 and the door control device 100, such as diagnostic command data and abnormality diagnosis result data, is relatively small compared to measurement data during the closing operation of the door 80. Therefore, the amount of data communication between the host device 10 and the door control device 100 can be kept relatively small.

[0193] A user may input a request for abnormality diagnosis near a door 80 that is the target of abnormality diagnosis in the railway vehicle 1, and the result of the abnormality diagnosis may be provided to the user. For example, the door control device 100 installed on the car body in the space above the door 80 may be provided with an input device that accepts input of the request for abnormality diagnosis from the user and a notification device (e.g., an indicator) that notifies the user of the result of the abnormality diagnosis. This allows a user, such as an inspection worker, to perform an abnormality diagnosis for each door 80 and check the result of the abnormality diagnosis for the door 80 at the location where the door 80 is installed. Furthermore, since there is no need to exchange data on abnormality diagnosis for the door 80 between the host device 10 and the door control device 100, the amount of data communication between the host device 10 and the door control device 100 can be reduced.

[0194] [Second example of door abnormality diagnosis processing] Next, a second example of the process for diagnosing an abnormality related to the door 80 will be described with reference to FIG.

[0195] FIG. 15 is a sequence diagram showing a second example of the process of diagnosing an abnormality related to the door 80. In FIG.

[0196] In this example, similarly to the first example described above, the diagnostic system SYS is provided in a railway vehicle 1 and includes a host device 10 and a door control device 100.

[0197] As shown in FIG. 15, steps S202, S204, S206, and S208 are the same as steps S102, S104, S106, and S108 in FIG. 14 described above, and therefore a description thereof will be omitted.

[0198] Upon completing the process of step S208, the input signal detection unit 113 transmits the measurement data acquired in step S208 to the higher-level device 10 via the communication unit 112 (step S210).

[0199] In step S210, the vehicle control device 12 of the higher-level device 10 receives the measurement data transmitted from the door control device 100 in step S210 through the transmission device 16 (step S212).

[0200] When the process of step S212 is completed, the vehicle control device 12 performs an abnormality diagnosis on the door 80 based on the measurement data received in step S212 (step S214).

[0201] When the process of step S214 is completed, the vehicle control device 12 displays the result of the abnormality diagnosis regarding the door 80 on a display device in the driver's cab or the conductor's cab, for example, in the same manner as in step S116 of FIG. 14 described above (step S216).

[0202] As described above, in this example, the diagnostic system SYS acquires data on the closing operation of the door 80 in the diagnostic mode in the door control device 100, and transmits the acquired data to the higher-level device 10. Then, the diagnostic system SYS performs an abnormality diagnosis on the door 80 in the higher-level device 10 based on the data received from the door control device 100.

[0203] As a result, in this example, the diagnostic system SYS can store historical measurement data and abnormality diagnosis results for all doors 80 of the railcar 1 in the host device 10. This is because the storage resources of the host device 10 can be secured to be sufficiently larger than the storage resources of the door control device 100. Therefore, the vehicle control device 12 can analyze abnormalities in the doors 80 based on the measurement data and abnormality diagnosis results for all doors 80 of the railcar 1 stored in the host device 10. For example, the vehicle control device 12 analyzes the history of abnormality diagnosis results (e.g., estimated values ​​of the dimension S) for a specific door 80. As a result, the diagnostic system SYS can predict the deterioration state (signs of abnormality) of the door 80 based on the analysis results of the vehicle control device 12, and diagnose not only the presence or absence of an abnormality in the door 80 but also the presence or absence of signs of abnormality in the door 80. Therefore, the diagnostic system SYS can more appropriately perform abnormality diagnosis for the door 80.

[0204] [Other examples of diagnostic systems] Next, another example of the diagnostic system SYS will be described with reference to FIG.

[0205] FIG. 16 is a diagram showing another example of the diagnostic system SYS.

[0206] As shown in FIG. 16, the diagnostic system SYS includes a railway vehicle 1 (a host device 10 and a door control device 100) and a diagnostic device 2.

[0207] In this example, the railway vehicle 1 included in the diagnostic system SYS may be one or more trains. The same may be true for a fourth example (FIG. 18) described below.

[0208] The diagnostic device 2 performs abnormality diagnosis on the door 80 of the railway vehicle 1.

[0209] The diagnostic device 2 is provided outside the railway vehicle 1. The diagnostic device 2 is communicably connected to the railway vehicle 1 via a predetermined communication line.

[0210] The predetermined communication line may include, for example, a wide area network (WAN) such as a mobile communication network terminated at 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 at a station or a train 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.

[0211] The diagnostic device 2 is a server device with relatively high processing power. The server device may be an on-premise server, a cloud server, or an edge server. The diagnostic device 2 may also be a terminal device with relatively lower processing power than the server device. The terminal device may be, for example, a stationary 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.

[0212] The functions of the diagnostic device 2 may be realized by any hardware or any combination of hardware and software. For example, the diagnostic device 2 is mainly configured with a computer including a CPU, a memory device, an auxiliary storage device, and an interface device. The memory device is, for example, an SRAM or a DRAM (Dynamic Random Access Memory). The auxiliary storage device is, for example, an HDD (Hard Disc Drive), an SSD (Solid State Drive), an EEPROM, or a flash memory. The interface device includes, for example, a communication interface for communicating with an external device including the railway vehicle 1 (host device 10). The interface device also includes an external interface for connecting to an external recording medium. This allows programs and various data for performing abnormality diagnosis processing on the door 80 to be installed from the recording medium to the auxiliary storage device of the diagnostic device 2. The programs and various data for performing abnormality diagnosis processing on the door 80 may also be downloaded from outside the diagnostic device 2 via the communication interface. The interface device may include multiple different types of interface devices according to the type of communication line to be connected. The diagnostic device 2 may further include an input device for receiving various inputs from a user and an output device for outputting information to the user. The input device includes, for example, a mechanically operated input device that accepts mechanical input from a user, such as a mouse, keyboard, or touch panel. The input device may also include, for example, a gesture input device or a voice input device that can accept input from a user by gesture or voice using a camera, microphone, or the like. The output device includes, for example, a display device that outputs information visually and a sound output device that outputs information audibly. The display device is, for example, a liquid crystal display or an organic EL (electroluminescence). The sound output device is, for example, a speaker.

[0213] [Third example of door abnormality diagnosis processing] Next, a third example of the process for diagnosing an abnormality related to the door 80 will be described with reference to FIG.

[0214] FIG. 17 is a sequence diagram showing a third example of the process of diagnosing an abnormality related to the door 80. In FIG.

[0215] In this example, the diagnostic system SYS shown in FIG. 16 is used as a premise.

[0216] As shown in FIG. 17, steps S302, S304, S306, S308, S310, and S312 are the same as steps S202, S204, S206, S208, S210, and S212 in FIG. 15 described above, and therefore description thereof will be omitted.

[0217] The vehicle control device 12 of the higher-level device 10 transmits the measurement data received in step S312 to the diagnostic device 2 outside the railway vehicle 1 (step S314).

[0218] The diagnostic device 2 receives the measurement data transmitted from the host device 10 of the railway vehicle 1 in step S314 (step S316).

[0219] The diagnostic device 2 performs an abnormality diagnosis on the door 80 based on the measurement data received in step S316 (step S318).

[0220] When the process of step S318 is completed, the diagnostic device 2 transmits the result of the abnormality diagnosis regarding the door 80 to the host device 10 of the railway vehicle 1 (step S320).

[0221] The vehicle control device 12 of the higher-level device 10 receives the result of the abnormality diagnosis on the door 80 transmitted from the diagnosis device 2 in the process of step S320 (step S322).

[0222] When the processing of step S322 is completed, the vehicle control device 12 displays the result of the abnormality diagnosis regarding the door 80 on a display device in the driver's cab or the conductor's cab, for example, in the same manner as steps S116 and S216 in FIGS. 14 and 15 described above (step S324).

[0223] In this way, in this example, the diagnostic system SYS can perform abnormality diagnosis on the door 80 using the diagnostic device 2 outside the railway vehicle 1. Therefore, it is possible to reduce the processing load on the railway vehicle 1 (the host device 10 and the door control device 100), which usually has relatively small processing resources.

[0224] Furthermore, in this example, the diagnostic system SYS can acquire and store, in the diagnostic device 2, measurement data of the doors 80 of the railway cars 1 of multiple formations and results of abnormality diagnosis based on the measurement data. As a result, the diagnostic device 2 can analyze abnormalities in the doors 80 based on the measurement data and abnormality diagnosis results of the closing operations of all the doors 80 of the railway cars 1 of multiple formations, which are stored therein. Therefore, the diagnostic device 2 can analyze abnormalities in the doors 80 based on the measurement data and abnormality diagnosis results of all the doors 80 of the target railway car 1, which are stored therein. For example, the diagnostic device 2 analyzes the history of abnormality diagnosis results (e.g., estimated values ​​of the dimension S of the variable portion) for a specific door 80. As a result, the diagnostic system SYS can predict the deterioration state (signs of abnormality) of the door 80 based on the analysis results of the diagnostic device 2, and diagnose not only the presence or absence of an abnormality in the door 80 but also the presence or absence of signs of abnormality in the door 80. Furthermore, the diagnostic device 2 may apply machine learning such as clustering based on the history of the results of abnormality diagnosis for the doors 80 of all railway cars 1 in the formation (estimated values ​​of the dimension S), and extract doors 80 that are abnormal or have signs of abnormality from among the doors 80 of all railway cars 1 in the formation. This allows the diagnostic system SYS to apply machine learning instead of or in addition to the above-mentioned method to perform abnormality diagnosis for the doors 80. Therefore, the diagnostic system SYS can perform abnormality diagnosis for the doors 80 more appropriately.

[0225] The diagnostic application may be installed in the diagnostic device 2, and a diagnostic command may be transmitted from the diagnostic device 2 to the railway vehicle 1 (host device 10) in response to a predetermined input from the user at the diagnostic device 2. In addition, when the diagnostic system SYS includes a plurality of railway vehicles 1, the diagnostic command is transmitted to a specific railway vehicle 1 designated by a predetermined input from the user.

[0226] [Another example of a diagnostic system] Next, still another example of the diagnostic system SYS will be described with reference to FIG.

[0227] FIG. 18 is a diagram showing yet another example of the diagnostic system SYS.

[0228] 18, similar to the other example (FIG. 16) described above, the diagnostic system SYS includes a railway vehicle 1 (host device 10 and door control device 100) and a diagnostic device 2. Unlike the other example (FIG. 16) described above, the diagnostic system SYS also includes a user terminal 3.

[0229] The user terminal 3 is a terminal device used by a user of the diagnostic system SYS.

[0230] The user terminal 3 is a terminal device used, for example, by an inspector who inspects the door 80 or a person in charge of maintenance and inspection of the railway vehicle 1. The user terminal 3 may also be a terminal device used, for example, by a user of the diagnostic device 2.

[0231] The user terminal 3 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 PC.

[0232] The functions of the user terminal 3 may be realized by any hardware or any combination of hardware and software. For example, the user terminal 3 is primarily configured with a computer including a CPU, a memory device, an auxiliary storage device, an interface device, an input device, and an output device. The memory device is, for example, an SRAM or a DRAM (Dynamic Random Access Memory). The auxiliary storage device is, for example, an HDD, an SSD, an EEPROM, or a flash memory. The interface device includes, for example, a communication interface for communicating with an external device including the diagnostic device 2. The interface device also includes an external interface for connecting to an external recording medium. This allows programs and various data for performing abnormality diagnosis processing on the door 80 to be installed from the recording medium to the auxiliary storage device of the user terminal 3. The programs and various data for performing abnormality diagnosis processing on the door 80 may also be downloaded from outside the user terminal 3 via the communication interface. The interface device may include multiple different types of interface devices according to the type of communication line to be connected. The input device includes, for example, a mechanical input device for receiving mechanical input from a user, such as a mouse, a keyboard, or a touch panel. The input device may also include a gesture input device or a voice input device that can accept input from a user by gesture or voice using, for example, a camera or a microphone. The output device includes, for example, a display device that outputs information visually and a sound output device that outputs information audibly. The display device is, for example, a liquid crystal display or an organic EL (Electroluminescence) display. The sound output device is, for example, a speaker.

[0233] [Fourth example of door abnormality diagnosis processing] Next, a fourth example of the process for diagnosing an abnormality related to the door 80 will be described with reference to FIG.

[0234] FIG. 19 is a sequence diagram showing a fourth example of the process of diagnosing an abnormality related to the door 80. In FIG.

[0235] In this example, the diagnostic system SYS shown in FIG. 18 is used as a premise.

[0236] As shown in FIG. 19, the user terminal 3 starts up a diagnostic application in response to a predetermined input from the user (step S402).

[0237] After completion of step S402, the user terminal 3 transmits a diagnostic command to the diagnostic device 2 in response to a predetermined input from the user requesting the start of an abnormality diagnosis for the door 80 (step S404).

[0238] The diagnostic command transmitted from the user terminals 3 of the railway cars 1 of the plurality of trains specifies the railway cars 1 on which abnormality diagnosis for the doors 80 is to be performed. The railway cars 1 are specified by a predetermined input from the user.

[0239] The diagnostic device 2 receives the diagnostic command sent from the user terminal 3 in the process of step S404 (step S406).

[0240] When the process of step S406 is completed, the diagnostic device 2 relays the diagnostic command from the user terminal 3 and transmits the diagnostic command to the target railway vehicle 1 (host device 10) (step S408).

[0241] The host device 10 (vehicle control device 12) of the target railway vehicle 1 receives the diagnostic command transmitted in step S408 (step S410).

[0242] The vehicle control device 12 relays the diagnostic command received in step S408 and transmits it to the door control device 100 via the transmission device 16 (step S412).

[0243] Steps S414, S416, S418, S420, S422, S424, and S426 are the same as steps S306, S308, S310, S312, S314, S316, and S318 in the third example (FIG. 17) described above, and therefore description thereof will be omitted.

[0244] When the process of step S426 is completed, diagnostic device 2 transmits the result of the abnormality diagnosis on door 80 made in step S426 to user terminal 3 (step S428).

[0245] The user terminal 3 receives the result of the abnormality diagnosis transmitted from the diagnostic device 2 in step S428 (step S430).

[0246] When the process of step S430 is completed, the user terminal 3 displays the result of the abnormality diagnosis regarding the door 80 on its own output device (display device) (step S432).

[0247] This allows the user to check the result of the abnormality diagnosis regarding the door 80 using the user terminal 3.

[0248] Thus, in this example, the diagnostic system SYS transmits a request (diagnosis command) for abnormality diagnosis regarding the door 80 from the user terminal 3 to the railway vehicle 1 via the diagnostic device 2, and notifies the user of the results of the abnormality diagnosis regarding the door 80 at the user terminal 3.

[0249] As a result, a user of the diagnostic system SYS can use the user terminal 3 to request an abnormality diagnosis for the door 80 and check the results of the abnormality diagnosis for the door 80. Therefore, for example, a user other than a user who can directly use the railway vehicle 1 or the diagnostic device 2 can use the user terminal 3 to check the results of the abnormality diagnosis. For example, a person in charge of a manufacturer that handles maintenance parts for the doors 80 can understand the occurrence status of abnormalities in the doors 80 for each railway vehicle 1 formation and optimize the management of maintenance parts. Furthermore, for example, a person in charge of maintenance and inspection of the railway vehicle 1 can carry the user terminal 3 and perform maintenance and inspection work on the doors 80 of the actual railway vehicle 1 while checking the results of the abnormality diagnosis for each door 80. Therefore, the convenience for users of the diagnostic system SYS can be improved.

[0250] [Effect] Next, the operations of the diagnostic device, diagnostic system, diagnostic method, and program according to this embodiment will be described.

[0251] In this embodiment, the diagnostic device acquires time-series data on the position of a railway vehicle door during a closing or opening operation, and the output of a switch that detects whether the door is fully closed. The diagnostic device is, for example, the diagnostic device 2, vehicle control device 12, or door control device 100 described above. The railway vehicle is, for example, the railway vehicle 1 described above. The door is, for example, the door 80 described above. The switch is, for example, the DCS 60 described above. Then, based on the acquired data, the diagnostic device diagnoses abnormalities related to the position of at least one of the switch and a pressing member for pressing a movable contact of the switch. The movable contact is, for example, the movable contact 62 described above. The pressing member is, for example, the DCS abutment 213 described above.

[0252] In this embodiment, the diagnostic system causes a railway vehicle door to perform a closing or opening operation. The diagnostic system is, for example, the diagnostic system SYS described above. The diagnostic system acquires time-series data on the position of the door during the closing or opening operation and the output of a switch that detects the fully closed state of the door. Based on the acquired data, the diagnostic system then diagnoses an abnormality related to the position of at least one of the switch and a pressing member that presses a movable contact of the switch.

[0253] The information processing device may also execute a diagnostic method. The information processing device is, for example, the above-described diagnostic device 2, vehicle control device 12, or door control device 100. Specifically, in the diagnostic method, the information processing device acquires time-series data on the position of a door during a closing operation or an opening operation of the door of a railway vehicle, and on the output of a switch that detects the fully closed state of the door. Then, in the diagnostic method, the information processing device diagnoses an abnormality related to the position of at least one of the switch and a pressing member that presses a movable contact of the switch, based on the acquired data.

[0254] Alternatively, the information processing device may be caused to execute a program. Specifically, the program causes the information processing device to acquire time-series data on the position of a railway vehicle door during a closing operation or an opening operation, and on the output of a switch that detects whether the door is fully closed. Then, based on the acquired data, the program causes the information processing device to diagnose an abnormality in the position of at least one of the switch and a pressing member that presses a movable contact of the switch.

[0255] This allows the diagnostic device or the like to grasp, for example, the fully closed position of the door and the position of the door when the switch output is switched from time-series data of the door position during closing and opening operations and the output of the switch that detects the fully closed state. Therefore, the diagnostic device or the like can evaluate the positional relationship between the switch and the pressing member that presses the switch when the door is in the fully closed state, and diagnose abnormalities related to the position of the switch or the pressing member.

[0256] In this embodiment, the diagnostic device or the like may acquire time-series data of the door position and the switch output during a door closing operation or a door opening operation performed at a second speed that is slower than the first speed when passengers board or disembark from the railcar. The first speed is, for example, the above-mentioned speed V1. The second speed is, for example, the above-mentioned speed V2.

[0257] This allows the diagnostic device to use data from when the door is closed or opened at a speed slower than the speed at which passengers normally board or disembark. Therefore, even if there is a time difference between the physical on / off timing of the switch and the on / off timing of the switch output (signal), the amount of door movement during this time difference can be kept relatively small. Therefore, when the diagnostic device uses the on / off timing of the switch to evaluate the position of the switch or pressing member, it can reduce errors in the evaluation results due to the time difference, allowing for more appropriate abnormality diagnosis.

[0258] In this embodiment, the second speed may be a constant speed.

[0259] This improves the accuracy of measuring the door position. Furthermore, even if there is a timing difference between the physical on / off switching of the switch and the on / off switching of the switch output, the diagnostic device or the like can relatively easily estimate the door position at the timing of the physical on / off switching of the switch by taking into account the time difference because the door speed is constant. Therefore, the diagnostic device or the like can more appropriately evaluate the positional relationship between the switch and the pressing member when the door is fully closed, and as a result, can more appropriately diagnose abnormalities related to the switch or the pressing member.

[0260] In this embodiment, the diagnostic device may acquire a first timing at which the switch output changes from OFF to ON during a closing operation or from ON to OFF during an opening operation, based on time-series data of the switch output. The first timing is, for example, the above-mentioned time t0 or time t3. The diagnostic device may acquire a first position of the door when the switch physically changes from OFF to ON during a closing operation or when the switch physically changes from ON to OFF during an opening operation, based on the first timing and time-series data of the door position. The first position is, for example, the above-mentioned position P1 or position P4. The diagnostic device may acquire a second position corresponding to a fully closed state of the door, based on the time-series data of the door position. The second position is, for example, the above-mentioned fully closed position P2. The diagnostic device may then diagnose an abnormality based on the first position and the second position.

[0261] This allows the diagnostic device or the like to evaluate the positional relationship between the switch and the pressing member when the door is in the fully closed state, based on the first position of the door when the switch is physically switched on / off and the second position corresponding to the fully closed state of the door. Therefore, the diagnostic device or the like can diagnose abnormalities related to the positions of the switch and the pressing member based on the evaluation results.

[0262] In this embodiment, a first position of the door when the switch is physically switched from OFF to ON during a closing operation or when the switch is physically switched from ON to OFF during an opening operation may be acquired based on the first timing, an estimated time difference between when the switch is physically switched from OFF to ON during a closing operation of the door and when the switch output is switched from OFF to ON during the closing operation of the door, or when the switch output is switched from ON to OFF during the opening operation of the door, and time-series data of the door position. The time difference is, for example, the time difference Δt1 or Δt2 described above.

[0263] This allows the diagnostic device to evaluate the positional relationship between the switch and the pressing member when the door is fully closed, taking into account the time difference between the physical on / off switching timing of the switch and the on / off timing of the switch output, thereby enabling the diagnostic device to more appropriately diagnose abnormalities related to the position of the switch or the pressing member.

[0264] Furthermore, in this embodiment, the diagnostic device may acquire a dimension that represents the positional relationship between the switch and the pressing member in the front-to-rear direction of the railway vehicle or in the door opening / closing direction when the door is in a fully closed state, based on the first position and the second position. The dimension is, for example, the dimension S of the variable portion described above. The diagnostic device may then diagnose the presence or absence of an abnormality based on whether or not the dimension is within a predetermined range defined by an upper limit value and a lower limit value. The upper limit value and the lower limit value are, for example, the upper limit value Sth1 and the lower limit value Sth2 described above.

[0265] This allows the diagnostic device, etc. to diagnose abnormalities related to the position of the switch or pressing member by evaluating the dimensions that represent the positional relationship between the switch and pressing member in the fore-and-aft direction of the railway vehicle or in the direction in which the door opens and closes.

[0266] In this embodiment, the diagnostic device may acquire a second timing at which the switch output changes from OFF to ON during a closing operation or from ON to OFF during an opening operation, based on time-series data of the switch output. The second timing is, for example, the above-mentioned time t0 or time t3. The diagnostic device may acquire a third position of the door at the second timing based on the second timing and time-series data of the door position. The third position is, for example, the above-mentioned position P0 or position P3. The diagnostic device may acquire a fourth position corresponding to the fully closed state of the door based on the time-series data of the door position. The fourth position is the above-mentioned fully closed position P2. The diagnostic device may acquire a first movement distance of the door from when the switch output changes from OFF to ON during a closing operation to when the door reaches the fully closed state, or from when the door is in the fully closed state to when the switch output changes from ON to OFF during an opening operation, based on the third and fourth positions. The first movement distance is, for example, the above-mentioned movement distance TL2 or movement distance TL3. The diagnostic device may also diagnose an abnormality based on the first travel distance and a second travel distance of the door that is estimated between the time when the switch is physically switched from OFF to ON during a closing operation and the time when the switch output is switched from OFF to ON, or between the time when the switch is physically switched from ON to OFF during an opening operation and the time when the switch output is switched from ON to OFF. The second travel distance is, for example, the above-mentioned travel distance TL1 or travel distance TL4.

[0267] This allows the diagnostic device to evaluate the positional relationship between the switch and the pressing member when the door is fully closed, taking into account the movement of the door due to the time difference between the physical on / off switching of the switch and the on / off switching of the switch output, thereby enabling the diagnostic device to more appropriately diagnose abnormalities related to the positions of the switch and the pressing member.

[0268] In addition, in this embodiment, the second movement distance may be obtained based on the expected time difference between when the switch physically switches from off to on during a closing operation and when the switch output switches from off to on, or between when the switch physically switches from on to off during an opening operation and when the switch output switches from on to off, and the speed of the door during that time.

[0269] This allows the diagnostic device or the like to obtain the distance the door moves (second movement distance) due to the time difference between the timing of the physical on / off switching of the switch and the timing of the on / off switching of the switch output.

[0270] In this embodiment, the diagnostic device may acquire a dimension representing the positional relationship between the switch and the pressing member in the front-to-rear direction of the railway vehicle or in the opening / closing direction of the door when the door is in a fully closed state, based on the first movement distance and the second movement distance. The diagnostic device may then diagnose whether or not an abnormality exists based on whether or not the dimension is within a predetermined range defined by an upper limit value and a lower limit value.

[0271] This allows the diagnostic device, etc. to diagnose abnormalities related to the position of the switch or pressing member by evaluating the dimensions that represent the positional relationship between the switch and pressing member in the fore-and-aft direction of the railway vehicle or in the direction in which the door opens and closes.

[0272] In addition, in this embodiment, if there are multiple timings at which the switch output switches from OFF to ON during a door closing operation, the diagnostic device may diagnose whether or not there is an abnormality using the latest timing of the multiple timings as a reference. Similarly, if there are multiple timings at which the switch output switches from ON to OFF during a door opening operation, the diagnostic device may diagnose whether or not there is an abnormality using the earliest timing of the multiple timings as a reference.

[0273] This allows the diagnostic device to evaluate the distance between the door position when the switch output is switched on / off and the position corresponding to the fully closed state as smaller. As a result, the diagnostic device can determine that the positional relationship between the switch and the pressing member is too far in the fully closed state, and diagnose that the position of the switch or the pressing member is abnormal. Therefore, in situations where the pressing member cannot press the movable contact enough to reliably switch the switch on / off and the switch is repeatedly turned on and off, the diagnostic device can more reliably diagnose that there is an abnormality in the position of the switch or the pressing member.

[0274] 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]

[0275] 1. Railway vehicles 2 Diagnostic equipment 3. User terminal 10 Upper device 12 Vehicle control device 16 Transmission Equipment 30 motor 31 Encoder 32 Current Sensor 32A Current Sensor 32B Current Sensor 50 Locking device 51 pin 52 Coil 53 Coil 60 DCS 61A1 Fixed contact 61A2 Fixed contact 61B1 Fixed contact 61B2 Fixed contact 62 Movable contact 70 DLS 71A1 Fixed contact 71A2 Fixed contact 71B1 Fixed contact 71B2 Fixed contact 72 Movable contact 80 doors 80A Door Panel 80B Door Panel 81A Door Edge Rubber 81B Door edge rubber 100 Door control device 101 Wiring 102 Wiring 110 Normal system control section 111 Power supply circuit 112 Communications Department 113 Input signal detection unit 114 Sequence section 115 Motor control unit 116 Motor drive unit 117 Locking / Unlocking Drive Unit 120 Standby system control unit 121 Power supply circuit 122 Communications Department 123 Input signal detection section 124 Sequence section 125 Motor control unit 126 Motor drive unit 127 Locking / Unlocking Drive Unit 130 Switching circuit section 140 Switching circuit section 150 Power supply 151 Input Contactor 200 Door drive mechanism 210 racks 211 Rack section 211A Rack Gear 212 Connecting part 213 DCS contact part 220 racks 221 Rack section 221A Rack Gear 222 Connecting part 222A Inclined section 223 Lock pin contact part 223A Rock Hall 230 Lock Pin 231 Pin section 232 Locking device contact part SYS Diagnostic System

Claims

1. and diagnosing an abnormality in at least one of the positions of the switch and a pressing member for pressing a movable contact of the switch based on a first position of the door when an output of a switch for detecting a fully closed state of the railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. Diagnostic equipment.

2. acquiring time-series data of the position of the door and the output of the switch during a period of closing or opening of the door; acquiring a first timing at which the output of the switch changes from OFF to ON during a closing operation of the door or from ON to OFF during an opening operation of the door based on time-series data of the output of the switch; acquiring the first position of the door based on the first timing and time-series data of the door position; acquiring the second position of the door based on time-series data of the door position; diagnosing the abnormality based on the first position and the second position; The diagnostic device of claim 1 .

3. acquire the first position of the door when the switch is physically switched from off to on during the closing operation of the door or when the switch is physically switched from on to off during the opening operation of the door, based on the first timing, a time difference estimated between when the switch is physically switched from off to on during the closing operation of the door and when the output of the switch is switched from off to on during the opening operation of the door, or between when the switch is physically switched from on to off during the opening operation of the door, and time-series data of the position of the door; The diagnostic device of claim 2 .

4. acquiring a dimension representing a positional relationship between the switch and the pressing member in a front-to-rear direction of the railway vehicle or in an opening / closing direction of the door when the door is in a fully closed state based on the first position and the second position; The presence or absence of the abnormality is diagnosed based on whether or not the dimension is within a predetermined range defined by an upper limit value and a lower limit value. A diagnostic device according to any one of claims 1 to 3.

5. and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of the railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. Diagnostic equipment.

6. The first movement distance is acquired based on time-series data of the position of the door and the output of the switch during a period of the closing operation or a period of the opening operation of the door. The diagnostic device of claim 5.

7. acquiring time-series data of the position of the door and the output of the switch during a period of closing or opening of the door; acquiring a second timing at which the output of the switch changes from OFF to ON during the closing operation or from ON to OFF during the opening operation based on time-series data of the output of the switch; acquiring a third position of the door at the second timing based on the second timing and the time-series data of the door position; acquiring a fourth position corresponding to a fully closed state of the door based on the time-series data of the door position; acquiring the first movement distance based on the third position and the fourth position; The diagnostic device of claim 6.

8. The second movement distance is acquired based on an estimated time difference between when the switch is physically switched from off to on during the closing operation and when the output of the switch is switched from off to on, or between when the switch is physically switched from on to off during the opening operation and when the output of the switch is switched from on to off, and a speed of the door during that time. A diagnostic device according to any one of claims 5 to 7.

9. acquiring a dimension representing a positional relationship between the switch and the pressing member in a front-to-rear direction of the railway vehicle or in an opening / closing direction of the door when the door is in a fully closed state based on the first movement distance and the second movement distance; The presence or absence of the abnormality is diagnosed based on whether or not the dimension is within a predetermined range defined by an upper limit value and a lower limit value. The diagnostic device of claim 7.

10. A diagnostic device that diagnoses abnormalities related to at least one of the position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of the position of the door during a closing operation or an opening operation of the door of a railway vehicle and the output of a switch that detects a fully closed state of the door, If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. Diagnostic equipment.

11. The door of the railway vehicle is closed or opened, and diagnosing an abnormality related to at least one of the position of the switch and the position of a pressing member for pressing a movable contact of the switch based on a first position of the door when an output of the switch for detecting the fully closed state of the door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. Diagnostic system.

12. The door of the railway vehicle is closed or opened, and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door, or from when the fully closed state of the door is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. Diagnostic system.

13. A diagnostic system that performs a closing or opening operation of a door of a railway vehicle, and diagnoses an abnormality related to at least one of the position of the switch and the position of a pressing member for pressing a movable contact of the switch, based on time-series data of the position of the door during the closing operation or the opening operation of the door and the output of a switch that detects a fully closed state of the door, If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. Diagnostic system.

14. The information processing device and diagnosing an abnormality in at least one of the positions of the switch and a pressing member for pressing a movable contact of the switch based on a first position of the door when an output of a switch for detecting a fully closed state of the railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door. Diagnostic methods.

15. The information processing device and diagnosing an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of the railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is estimated from when the switch is physically switched from off to on during a closing operation of the door until the output of the switch is switched from off to on during a closing operation of the door, or from when the switch is physically switched from on to off until the output of the switch is switched from on to off during an opening operation of the door. Diagnostic methods.

16. A diagnostic method in which an information processing device diagnoses an abnormality in at least one of a position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of a position of the door during a closing operation or an opening operation of the door of a railway vehicle and an output of a switch that detects a fully closed state of the door, the method comprising: If the output of the switch is switched from off to on multiple times during the closing operation of the door, the latest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality, or if the output of the switch is switched from on to off multiple times during the opening operation of the door, the earliest timing among the multiple times is used as a reference to diagnose the presence or absence of the abnormality. Diagnostic methods.

17. In the information processing device, and based on a first position of the door when an output of a switch that detects a fully closed state of a railway vehicle door is switched from OFF to ON during a closing operation of the door or when an output of the switch is switched from ON to OFF during an opening operation of the door, and a second position corresponding to the fully closed state of the door, a diagnosis is made for an abnormality related to the position of at least one of the switch and a pressing member that presses a movable contact of the switch. program.

18. In the information processing device, and a diagnosis of an abnormality in the position of at least one of the switch and a pressing member for pressing a movable contact of the switch is performed based on a first movement distance of the door from when an output of a switch that detects a fully closed state of the door is switched from off to on until the door reaches the fully closed state during a closing operation of the door of a railway vehicle, or from when the door is fully closed until the output of the switch is switched from on to off during an opening operation of the door, and a second movement distance of the door that is assumed to be between when the switch is physically switched from off to on during a closing operation of the door and when the output of the switch is switched from off to on during an opening operation of the door, or between when the switch is physically switched from on to off and when the output of the switch is switched from on to off during an opening operation of the door. program.

19. A program that causes an information processing device to diagnose an abnormality related to at least one of the position of a switch and a pressing member for pressing a movable contact of the switch, based on time-series data of a position of the door of a railway vehicle during a closing operation or an opening operation of the door and an output of a switch that detects a fully closed state of the door, the information processing device diagnoses the presence or absence of the abnormality based on the latest timing of the switch output being switched from off to on when there are multiple timings when the switch output is switched from off to on during the door closing operation, or based on the earliest timing of the switch output being switched from on to off when there are multiple timings when the switch output is switched from on to off during the door opening operation; program.

Images