CN112746783A

CN112746783A - State decision device and method for door locking device and computer readable storage medium

Info

Publication number: CN112746783A
Application number: CN202011172659.7A
Authority: CN
Inventors: 山田晋辅
Original assignee: Nabtesco Corp
Current assignee: Nabtesco Corp
Priority date: 2019-10-30
Filing date: 2020-10-28
Publication date: 2021-05-04
Anticipated expiration: 2040-10-28
Also published as: EP3816376A1; JP7360897B2; CN112746783B; JP2021070954A

Abstract

The invention relates to a state determination device and method of a door locking device and a computer readable storage medium. A state determination device for a door lock device is provided with: a calculation unit that calculates an unlock elapsed time H from when a drive signal for driving the door lock device is output to when an unlocking operation of the door lock device is completed (step S10, step S20, step S40, step S50); and a determination unit that determines whether or not the door lock device is abnormal based on the unlock elapsed time H (step S70, step S80, and step S110).

Description

State decision device and method for door locking device and computer readable storage medium

Technical Field

The present invention relates to a state determination device for a door lock device, a state determination method for a door lock device, and a state determination program for a door lock device.

Background

Patent document 1 discloses a door locking device for locking a door of a railway vehicle. The door locking device has a locking pin that reciprocates. The locking pin is driven by a solenoid. The door is locked or unlocked in response to the action of the locking pin.

Documents of the prior art

Patent document

Patent document 1: japanese examined patent publication (Kokoku) No. 7-21777

Disclosure of Invention

In the door locking device as in patent document 1, an abnormality such as a delay in operation may occur. Therefore, it is preferable to grasp an abnormality of the door locking device. However, in the technique described in patent document 1, the determination of the presence or absence of an abnormality in the door locking device is not performed, and no study has been made, and there is room for improvement in this point.

The present invention has been made in view of the above circumstances, and an object thereof is to determine whether or not there is an abnormality in a door locking device.

A state determination device for a door lock device according to an aspect of the present invention includes: a calculation unit that calculates an elapsed time from when a drive signal for driving a door lock device is output to when a locking operation or an unlocking operation of the door lock device is completed; and a determination unit that determines whether or not the door locking device has an abnormality based on the elapsed time. In the above configuration, if an abnormality such as a delay in operation occurs in the door lock device, the elapsed time becomes long. Therefore, it can be determined whether or not the door lock device is abnormal based on the elapsed time.

In the state determination device for a door lock device, the calculation unit may calculate the elapsed time as a time when the operation of the door lock device is completed, the time when the door lock device switches the output signal of the door lock switch between the state in which the door is locked and the state in which the door is unlocked after the drive signal is output.

In the above configuration, completion of the operation of the door lock device is determined by a structure that is generally mounted on a railway vehicle, such as a door lock switch. Therefore, in order to determine the completion of the operation of the door lock device, no special additional component is required, and an increase in the number of components can be avoided.

In the state determination device for a door locking device, the calculation unit may calculate the elapsed time when the door locking device is unlocked.

When a drive signal of the door lock device is output in the case of unlocking the door, the door lock device operates without including the operation of the door. That is, the elapsed time from when the drive signal of the door lock device is output to when the operation of unlocking by the door lock device is completed can be accurately grasped. Therefore, it is preferable in grasping the state of the door locking device.

In the state determination device for a door lock device, the determination unit may determine that an abnormality has occurred in the door lock device when the elapsed time is longer than a predetermined time. With the above configuration, it is determined that an abnormality has occurred in the door locking device when the elapsed time is longer than the predetermined time, and it is possible to easily grasp the abnormality of the door locking device.

In the state determination device for a door lock device, the door lock device may be mounted on a plurality of railway vehicles, and the determination unit may calculate the predetermined time based on the elapsed time for the plurality of door lock devices in the same railway vehicle.

It is assumed that the degree of deterioration of a plurality of door lock devices mounted on the same vehicle with respect to a new state is the same. If the predetermined time is calculated based on the elapsed times in order to compare such items with similar degrees of deterioration, it can be determined that the door locking device is abnormal separately from the degrees of deterioration. Further, if the predetermined time is calculated from the door lock device of the same vehicle, it is not necessary to perform an experiment or simulation for calculating the predetermined time in advance.

A method for determining a state of a door lock device according to an aspect of the present disclosure includes: a calculation step of calculating an elapsed time from when a drive signal for driving a door lock device is output to when an operation of the door lock device is completed; and a determination step of determining whether or not the door locking device has an abnormality based on the elapsed time. In the above configuration, if an abnormality such as a delay in operation occurs in the door lock device, the elapsed time becomes long. Therefore, it can be determined whether or not the door lock device is abnormal based on the elapsed time.

A computer-readable storage medium according to one embodiment of the present disclosure stores a state determination program for a door lock device. Causing the computer to execute the following processing when a state determination program of the door locking device is executed by the computer: a calculation process of calculating an elapsed time from when a drive signal for driving a door lock device is output to when an operation of the door lock device is completed; and a determination process of determining whether or not the door locking device has an abnormality based on the elapsed time. In the above configuration, if an abnormality such as a delay in operation occurs in the door lock device, the elapsed time becomes long. Therefore, it can be determined whether or not the door lock device is abnormal based on the elapsed time.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it can be determined whether or not there is an abnormality in the door locking device.

Drawings

Fig. 1 is a schematic diagram of a mechanism for opening and closing a door of a railway vehicle.

Fig. 2 is a schematic configuration diagram of the door locking device.

Fig. 3 is a flowchart showing a processing procedure of the state determination processing.

Description of the reference numerals

12: a vehicle control device; 30: a door locking device; 32: a solenoid; 34: a locking pin; 38: a door locking switch; 50: a door control unit; 60: a state determination device; 61: a calculation section; 62: a determination unit.

Detailed Description

Next, an embodiment in which the state determination device of the door lock device is embodied as a door control unit will be described with reference to fig. 1 to 3.

First, the schematic configuration of the door, the door opening/closing device, and the door locking device of the railway vehicle will be described.

As shown in fig. 1, a railway vehicle is provided with a door 10 for opening and closing an opening as an entrance of the railway vehicle. The door 10 is a double door. A pair of doors 10 are hung from the upper side by a door hanging member (Japanese: hanging member) 42. Each door 10 is provided with 2 door hanger members 42. The gantry member 42 slides along a rail 47 extending in the front-rear direction of the vehicle. That is, the pair of doors 10 are sliding doors that slide in the front-rear direction of the vehicle. The pair of doors 10 slide in a direction away from each other when the doors are in an open state in which the doorway is opened, and slide in a direction toward each other when the doors are in a closed state in which the doorway is closed. Further, the railway vehicle is provided with a plurality of entrances and exits, and a pair of doors 10 corresponding to the entrances and exits are provided. In addition, only one of the pairs of doors 10 is illustrated in fig. 1.

A door opening/closing device 20 for driving the door 10 is disposed around the doorway of the railway vehicle, specifically, above the doorway. The door opening/closing device 20 includes an electric motor 22 serving as a driving source. The electric motor 22 is coupled to the 2 doors 10 via a door drive mechanism 24, which is constituted by a rack and pinion, for example. Specifically, the door drive mechanism 24 is coupled to the outer hanger member 42A located outside the doorway in the sliding direction of the door 10, among the 2 hanger members 42 of each door 10. When the output shaft of the electric motor 22 rotates in one direction, each door 10 is opened, and when the output shaft of the electric motor 22 rotates in the other direction, each door 10 is closed.

Further, a door locking device 30 for locking the pair of doors 10 in the fully closed state is disposed above the doorway of the railway vehicle. Only one door locking device 30 is provided for a pair of doors 10. The door locking device 30 is located near the center of the doorway in the sliding direction of the door 10.

As shown in fig. 2, the door locking device 30 includes a solenoid 32 serving as a driving source. The coil 33 of the solenoid 32 is cylindrical. A voltage is applied from the power source 31 to the coil 33. A bar-shaped locking pin 34 protrudes from the inside of the coil 33. The lock pin 34 is biased in a direction protruding from the coil 33 by a compression spring 36. Further, the solenoid 32 incorporates a current measuring instrument 39A for measuring the current a flowing through the coil 33. A voltage measuring instrument 39B for measuring the voltage V of the power supply 31 is attached to a wire for connecting the power supply 31 and the coil 33.

In the door locking device 30, when a voltage is applied from the power source 31 to the coil 33 of the solenoid 32 and the coil 33 is excited, the lock pin 34 is pulled back into the coil 33 against the elastic force of the compression spring 36. On the other hand, when no voltage is applied from the power source 31 to the coil 33 and the coil 33 is demagnetized, the lock pin 34 is protruded from the coil 33 by the elastic force of the compression spring 36.

As shown in fig. 1, in the door locking device 30, the lock pin 34 is coupled to the protruding rod 37 via a coupling mechanism, not shown. The projecting rod 37 acts in correspondence with the action of the locking pin 34. Here, a fixing member 45 is attached to the hanging member 42 of one door 10 of the pair of doors 10, and the fixing member 45 engages with the protruding rod 37 when the door 10 is fully closed. The fixing member 45 is mounted on the central hanger member 42B located near the center of the doorway in the sliding direction of the door 10 among the 2 hanger members 42 of one door 10.

When the lock pin 34 protrudes from the coil 33 in response to the demagnetization of the coil 33 of the solenoid 32 when the door 10 is in the fully closed state, the protruding rod 37 operates, and the protruding rod 37 engages with the fixing member 45. As a result, the one door 10 is locked so as not to be slidable. When one door 10 cannot perform the sliding movement, the other door 10 cannot perform the sliding movement via the door driving mechanism 24. When the lock pin 34 is pulled back into the coil 33 in accordance with the excitation of the coil 33 of the solenoid 32, the engagement between the protruding rod 37 and the fixing member 45 is released. Then, the door 10 becomes the unlocked state.

The operation of the lock pin 34 is transmitted to a Door Lock Switch (DLS)38 via a transmission mechanism not shown. As shown in fig. 2, when the lock pin 34 is in the lock position protruding from the coil 33, the door lock switch 38 outputs a lock signal LS as an output signal. When the lock pin 34 is in the lock release position pulled back to the inside of the coil 33, the door lock switch 38 stops the output of the lock signal LS as an output signal. In this manner, the door lock switch 38 switches the output of the lock signal LS on and off when the door lock device 30 locks the door 10 and unlocks the door 10.

Next, the electrical configurations of the door opening and closing device 20 and the door locking device 30 will be described.

As shown in fig. 1, the door opening and closing device 20 and the door locking device 30 are controlled by a door control unit 50. The door control unit 50 is mounted in the vicinity of the doorway of the railway vehicle for each pair of doors 10. The door control unit 50 can be configured as one or more processors that execute various processes in accordance with a computer program (software). The gate control unit 50 may be configured as one or more dedicated hardware circuits such as a microcomputer for executing at least a part of various processes, or a circuit (circuit) including a combination thereof. The processor includes memories such as RAM and ROM, and a CPU. The memory stores program codes or instructions configured to cause the CPU to execute processing. Memory, or computer-readable media, includes all available media that can be accessed by a general purpose or special purpose computer. The gate control unit 50 includes a nonvolatile memory unit. The door control unit 50 is input with a lock signal LS from the door lock switch 38. Further, to gate control unit 50, current a from current measuring device 39A and voltage V from voltage measuring device 39B are input.

The door control unit 50 is connected to a vehicle control device 12 as a host device for controlling the travel of the railway vehicle and the opening and closing of the door 10. As shown in fig. 2, the door control unit 50 operates based on a command signal W from the vehicle control device 12. The vehicle control device 12 may be configured as one or more processors that execute various processes in accordance with a computer program (software). The vehicle control device 12 may be configured as one or more dedicated hardware circuits such as a microcomputer for executing at least a part of various processes, or a circuit (circuit) including a combination thereof. The processor includes memories such as RAM and ROM, and a CPU. The memory stores program codes or instructions configured to cause the CPU to execute processing. Memory, or computer-readable media, includes all available media that can be accessed by a general purpose or special purpose computer. The vehicle control device 12 is provided with a nonvolatile database 14. The database 14 collectively stores information input from the door control unit 50.

As shown in fig. 2, the door control unit 50 includes a drive control unit 52, and the drive control unit 52 drives the door opening/closing device 20 and the door locking device 30 in accordance with a command signal W from the vehicle control device 12. The drive control unit 52 outputs a drive signal for driving the door opening/closing device 20 and the door locking device 30. The drive control unit 52 outputs an excitation signal EM1 for exciting the solenoid 32 to the power supply 31 as a drive signal for driving the unlocking operation of the door lock device 30. When the excitation signal EM1 is output, a voltage is applied from the power supply 31 to the solenoid 32. Then, the solenoid 32 becomes an excited state. The drive control unit 52 outputs a demagnetization signal EM2 for demagnetizing the solenoid 32 to the power supply 31 as a drive signal for driving the locking operation of the door lock device 30. When the demagnetization signal EM2 is output, the application of the voltage from the power supply 31 to the solenoid 32 is stopped. Then, the solenoid 32 becomes a demagnetized state.

In the door locking device 30, the sliding resistance when the lock pin 34 is operated may be increased by a clogging foreign matter or uneven wear. Further, the sliding resistance may increase in accordance with the deformation of the vehicle body side to which the door lock device 30 is attached. If the sliding resistance when the lock pin 34 is operated becomes large, the timing when the lock pin 34 starts to operate is delayed or the operation speed of the lock pin 34 after the lock pin 34 has moved up becomes slow when the excitation signal EM1 or the demagnetization signal EM2 is output to the solenoid 32. Therefore, the door control unit 50 includes a state determination device 60 for determining whether or not there is an abnormality in the door lock device 30.

In addition to the increase in the sliding resistance as described above, the door locking device 30 may cause a failure such as disconnection or short-circuit of the solenoid 32 and an electrical system connected thereto, thereby reducing the current flowing through the solenoid 32. In this case, the timing at which the lock pin 34 starts to operate is also delayed, or the operation speed of the lock pin 34 after the lock pin 34 starts to operate is also slowed. The state determination device 60 also determines the presence or absence of such an abnormality.

The state determination device 60 of the door control unit 50 includes a calculation unit 61, and the calculation unit 61 calculates an elapsed time from when a drive signal for driving the door lock device 30 is output to when the operation of the door lock device 30 according to the drive signal is completed. The calculation unit 61 calculates the elapsed time for the unlocking operation of the door lock device 30. That is, the calculation unit 61 calculates the unlock elapsed time H from when the excitation signal EM1 for the solenoid 32 is output to when the lock pin 34 is completely pulled back into the coil 33 and the engagement between the protruding rod 37 and the fixed member 45 is released. The calculation unit 61 calculates the unlock elapsed time H by setting the timing at which the lock signal LS output from the door lock switch 38 is switched from on to off as the timing at which the lock pin 34 is completely pulled back into the coil 33.

The state determination device 60 of the door control unit 50 includes a determination unit 62, and the determination unit 62 determines whether or not there is an abnormality in the door locking device 30 based on the unlock elapsed time H. When the unlock elapsed time H is longer than a predetermined time H1, the determination unit 62 determines that the operation of the lock pin 34 is delayed, that is, the door lock device 30 is abnormal. When a resistance value R, which is a value obtained by dividing the voltage V of the power source 31 by the current a flowing through the coil 33, is different from a predetermined resistance RQ determined in advance, the determination unit 62 determines that the solenoid 32 and the electrical system connected thereto have failed, that is, the door lock device 30 has an abnormality. In this manner, the determination unit 62 determines a failure of the electrical system based on the relationship between the current a and the voltage V. The predetermined resistance RQ is calculated by preliminarily examining, through experiments or simulations, a relationship between a voltage and a current when a voltage is applied to the solenoid 32.

The determination unit 62 calculates the predetermined time H1 as a reference value for determining whether or not the door lock device 30 is abnormal. The determination unit 62 calculates the predetermined time H1 based on the unlock elapsed time H associated with the plurality of door lock devices 30 mounted on the same vehicle among the plurality of vehicles constituting one group (japanese patent application number). Here, when the unlock elapsed time H is calculated, the calculation unit 61 transmits the unlock elapsed time H to the vehicle control device 12. The vehicle control device 12 stores the unlock elapsed time H in the database 14. The unlock elapsed time H is transmitted from the plurality of door control units 50 mounted on the railway vehicle to the vehicle control device 12. The database 14 stores data of a predetermined period in the past with respect to the unlock elapsed time H of the plurality of door locking devices 30 mounted on the railway vehicle. The determination unit 62 accesses the database 14 of the vehicle control device 12 when calculating the predetermined time H1, and acquires data of a past predetermined period with respect to the unlock elapsed time with respect to the plurality of door locking devices 30 mounted on the same vehicle. Then, the determination unit 62 calculates an average time of the acquired data, and calculates a time longer than the average time as the predetermined time H1.

Next, the state determination process performed by the door control unit 50 will be described.

The door control unit 50 starts a series of state determination processing upon receiving a command signal W to open the door 10 from the vehicle control device 12. Further, in a state where the door control unit 50 receives the command signal W to open the door 10 from the vehicle control device 12, the door 10 is in the fully closed state, and the lock pin 34 is in the lock position protruding from the coil 33. Further, the lock signal LS is output from the door lock switch 38.

As shown in fig. 3, the door control unit 50 executes the process of step S10 when starting the state determination process. In step S10, the calculation unit 61 of the door control unit 50 determines whether or not the drive control unit 52 has output the excitation signal EM1 to the solenoid 32. When the excitation signal EM1 is not output (step S10: no), the calculation section 61 executes the process of step S10 again. That is, the calculation section 61 repeats the processing of step S10 until the excitation signal EM1 is output. Then, when the excitation signal EM1 is output (step S10: yes), the calculation section 61 advances the process to step S20.

In step S20, the calculation unit 61 starts counting the unlock elapsed time H. Then, the calculation unit 61 advances the process to step S30. In step S30, determination unit 62 refers to the detection results of current measuring device 39A and voltage measuring device 39B. Then, the determination unit 62 determines whether or not the resistance R, which is a value obtained by dividing the voltage V by the current a, is equal to the predetermined resistance RQ. When the resistance value R is different from the predetermined resistance RQ (R ≠ RQ) (no at step S30), the determination unit 62 advances the process to step S100.

In step S100, the determination unit 62 determines that the electrical system related to the solenoid 32 has failed. Then, the determination unit 62 outputs the first information J1 indicating that the electrical system related to the solenoid 32 has failed to the vehicle control device 12. The vehicle control device 12, upon receiving the first information J1, stores the occurrence of a failure in the electrical system related to the solenoid 32 in the database 14. When the process of step S100 is executed, the determination unit 62 once ends the series of processes of the state determination process.

In step S30, when resistance value R is equal to predetermined resistance RQ (R is equal to RQ) (yes in step S30), determination unit 62 advances the process to step S40. In step S40, the calculation unit 61 determines whether or not the output of the lock signal LS is switched to off. When the lock signal LS continues to be output (no in step S40), the calculation section 61 returns to the process of step S30. In this case, the determination unit 62 executes the process of step S30. The calculation section 61 and the determination section 62 repeat the processing of step S30 and step S40 until the output of the lock signal LS is switched off. When the output of the lock signal LS is switched off (step S40: yes), the calculation unit 61 advances the process to step S50.

In step S50, the calculation section 61 ends the counting of the unlock elapsed time H started in step S20. Then, the calculation unit 61 calculates the unlock elapsed time H at the time point when step S50 is reached as the final unlock elapsed time H. Further, the calculation unit 61 transmits the calculated unlock elapsed time H to the vehicle control device 12. Then, the calculation unit 61 advances the process to step S60.

In step S60, the determination unit 62 of the door control unit 50 calculates a predetermined time H1. As described above, the determination unit 62 calculates the predetermined time H1 based on the unlock elapsed time H associated with the plurality of door locking devices 30 mounted on the same vehicle. After that, the determination unit 62 advances the process to step S70. Step S60 corresponds to a calculation step and a calculation process.

In step S70, the determination unit 62 determines whether or not the unlock elapsed time H is equal to or less than a predetermined time H1. When the unlock elapsed time H is longer than the predetermined time H1 (H > H1) (step S70: no), the determination unit 62 advances the process to step S110.

In step S110, the determination unit 62 determines that the operation of the lock pin 34 is delayed. Then, the determination unit 62 outputs second information J2 indicating that the operation of the lock pin 34 is delayed to the vehicle control device 12. When receiving the second information J2, the vehicle control device 12 stores the delay in the operation of the lock pin 34 in the database 14. When the process of step S110 is executed, the determination unit 62 once ends the series of processes of the state determination process.

On the other hand, in step S70, when the unlock elapsed time H is equal to or less than the predetermined time H1 (H ≦ H1), the determination unit 62 advances the process to step S80. In step S80, the determination unit 62 determines that the door lock device 30 is normal. When executing the process of step S80, the determination unit 62 once ends the series of processes of the state determination process. Further, steps S70, S80, S110 correspond to the determination process and the determination step.

Further, for example, when inspecting a railway vehicle, information on a failure of an electrical system or a delay in operation of the lock pin 34 stored in the database 14 of the vehicle control device 12 is read by an operator, and is used flexibly for replacement or repair of the door lock device 30.

Next, the operation of the present embodiment will be described.

In a state where the door 10 is locked, the lock pin 34 protrudes from the coil 33, and the protruding rod 37 engages with the fixing member 45. Then, the output of the lock signal LS from the door lock switch 38 is on. When the door control unit 50 receives the command signal W for opening the door in this state, the drive control unit 52 of the door control unit 50 outputs the excitation signal EM1 to the solenoid 32. Then, according to the excitation signal EM1, the solenoid 32 is excited, and the lock pin 34 is pulled back into the coil 33. When the lock pin 34 is pulled back, the output of the lock signal LS from the door lock switch 38 is switched off.

Next, the effects of the present embodiment will be described.

(1) In the state determination process, it is determined whether or not the unlock elapsed time H required for the door lock device 30 to perform the unlocking operation is within the predetermined time H1. When the unlock elapsed time H is longer than the predetermined time H1, it is determined that the operation of the lock pin 34 is delayed. By such determination, it is possible to grasp an abnormality of the door lock device 30.

(2) Regarding the main cause of the abnormality of the door locking device 30, in addition to the increase in the sliding resistance, a failure of the electrical system is considered. Considering this case, 2 stages of determination are performed in the state determination process. First, it is determined whether the relationship between the voltage V of the power source 31 and the current a flowing to the coil 33 is appropriate. This makes it possible to determine whether or not the electrical system related to the solenoid 32 has a failure. Then, if the electrical system is not in failure, it is determined whether or not the unlock elapsed time H required for the door lock device 30 to perform the unlocking operation is within the predetermined time H1. This makes it possible to determine whether or not the operation of the lock pin 34 is delayed, on the premise that the electric system is not malfunctioning. Therefore, if it is determined that the operation of the lock pin 34 is delayed, it can be estimated that the delay is caused by an increase in the sliding resistance. In this way, according to the state determination process, not only the abnormality of the door lock device 30 can be grasped, but also the cause of the abnormality of the door lock device 30 can be distinguished.

(3) Since the existing component, the door lock switch 38, is used to grasp the completion of the unlocking operation of the lock pin 34, it is not necessary to add a new special component, such as a camera or the like for monitoring the operation of the lock pin 34, in order to grasp the completion of the unlocking operation of the lock pin 34. Therefore, it is possible to suppress an increase in the number of components for grasping the abnormality of the door locking device 30.

(4) Failure of the solenoid 32 and the electrical system connected thereto becomes a main cause of delay in the operation of the lock pin 34. Therefore, it is important to grasp the state of the electric system in order to grasp the state of the door lock device 30. When the lock pin 34 is unlocked, the solenoid 32 is excited, and therefore information on the current a flowing through the coil 33 of the solenoid 32 can be obtained. Thus, it is possible to grasp the failure of the solenoid 32 and the electric system connected thereto.

(5) The determination unit 62 calculates the predetermined time H1 based on the unlock elapsed time H associated with the plurality of door locking devices 30 of the same vehicle. Here, the degree of deterioration of the plurality of door lock devices 30 mounted on the same vehicle is slightly different depending on the load applied thereto, but it is assumed that the degree of deterioration is the same as the whole with respect to the new state. If the predetermined time H1 is calculated based on the unlock elapsed time H in order to compare such items with similar degrees of deterioration, it is possible to determine whether or not the door lock device 30 is abnormal, separately from the degree of deterioration. Further, if the predetermined time H1 is calculated from the door locking device 30 of the same vehicle, it is not necessary to perform an experiment or simulation for calculating the predetermined time H1 in advance, and it is possible to save time and labor for performing the experiment or simulation.

The present embodiment can be modified as follows. The present embodiment and the following modifications can be combined with each other within a range not technically contradictory.

The method of calculating the predetermined time H1 is not limited to the example of the above embodiment. The predetermined time H1 may be a length that enables determination of the operation delay of the lock pin 34, and may be a length that enables determination of a relatively slight operation delay to the extent that there is no obstacle in the safe operation of the railway vehicle.

The predetermined time H1 may be determined based on the elapsed time H of unlocking the door locking devices of a plurality of vehicles in one set and all vehicles in one set in the calculation of the predetermined time H1.

In the calculation of the predetermined time H1, the predetermined time H1 may be calculated by selecting only the unlock elapsed time H satisfying the condition without using the unlock elapsed time H of all the door lock devices in the door lock devices mounted on the same vehicle or a plurality of vehicles in a single set for the calculation of the predetermined time H1. For example, the unlocking elapsed times H of the plurality of door locking devices may be arranged in order from the shortest to the longest, the first unlocking elapsed times H may be selected, and the average of these first unlocking elapsed times H may be determined as the predetermined time H1.

When the difference in the load applied to the door is known in advance in the calculation of the predetermined time H1, the predetermined time H1 may be determined based on the elapsed time H of unlocking the door locking device of the door to which substantially the same load is applied.

The predetermined time H1 may be calculated by experiment or simulation, and the fixed predetermined time H1 may be calculated in advance.

The determination of the failure of the electrical system related to the solenoid 32 may use only one of the voltage V of the power supply 31 and the current a flowing through the solenoid 32. For example, the time series of the current a flowing through the solenoid 32 may be monitored in a state where a voltage is applied to the solenoid 32, and it may be determined that the electrical system related to the solenoid 32 has a failure when the variation of the current a is excessive, that is, when the current a is unstable.

It is not necessary to determine the failure of the electrical system involved in the solenoid 32 in accordance with the unlocking action of the door lock device 30. That is, only the operation delay of the lock pin 34 may be determined in accordance with the unlocking operation of the door lock device 30.

The presence or absence of an abnormality in the door locking device 30 may be determined during the locking operation of the door locking device 30. Here, unlike the case where the door lock device 30 is caused to perform the unlocking operation, the solenoid 32 is demagnetized when the door lock device 30 is caused to perform the locking operation. That is, when the door lock device 30 is locked, since no voltage is applied to the solenoid 32, information on the electrical system such as the voltage V cannot be acquired during the locking operation of the door lock device 30. Therefore, the failure of the electric system related to the solenoid 32 cannot be grasped in accordance with the locking operation of the door lock device 30. However, even when the door locking device 30 is locked, the delay in the operation of the lock pin 34 can be grasped. Specifically, in the locking operation of the door lock device 30, the solenoid 32 is excited and the lock pin 34 is pulled back into the coil 33 while the door 10 is operated from the open state to the closed state in the early stage of the locking operation. Then, when the door 10 becomes the fully closed state, the solenoid 32 is demagnetized, the lock pin 34 protrudes from the coil 33 due to the elastic force of the compression spring 36, and the protruding rod 37 engages with the fixing member 45.

When the presence or absence of an abnormality in the door lock device 30 is determined by the above-described locking operation, the locking elapsed time from when the demagnetization signal EM2 for the solenoid 32 is output until the protrusion of the lock pin 34 from the coil 33 is completed and the door lock switch 38 is switched on may be compared with the predetermined time for the locking operation. This makes it possible to determine a delay in the operation of the lock pin 34. For example, if the determination regarding the elapsed time is made for both the locking operation and the unlocking operation of the door locking device 30, at least the operation delay of the locking pin 34 can be monitored doubly.

The structure of the door locking device 30 is not limited to the example of the above embodiment. For example, the operation of the lock pin 34 may be directly transmitted to the door lock switch 38 without a transmission mechanism. Further, the lock pin 34 may be directly engaged with the door 10 to lock the door 10.

The configuration of the change door lock device 30 may be configured such that: the lock pin 34 is pulled back into the solenoid 32 by the tension spring when the solenoid 32 is demagnetized, and the lock pin 34 protrudes from the solenoid 32 when the solenoid 32 is excited. Instead of using a return spring, the lock pin 34 may be driven to reciprocate only by the solenoid 32.

The door locking device may be configured to control the unlocked state and the locked state of the door 10 by the electric motor 22 for driving the opening and closing of the door 10. In such a configuration, a series of operations of the unlocking operation of the door lock device and the opening operation of the door 10 is performed in response to a drive signal for rotating the output shaft of the electric motor 22 in one direction. That is, when the output shaft of the electric motor 22 is rotated in one direction when the door 10 is in the fully closed state, the door locking device is first operated to bring the door 10 into the unlocked state, and then the door 10 is brought into the open state. Further, a series of operations, i.e., the closing operation of the door 10 and the locking operation of the door locking device, are performed in response to a drive signal for rotating the output shaft of the electric motor 22 in the other direction. That is, when the output shaft of the electric motor 22 is rotated in the other direction when the door 10 is opened, the door 10 is first closed, and then the door lock device is operated to lock the door 10. In such a door lock device, a drive signal for rotating the output shaft of the electric motor 22 in one direction serves as both a drive signal for driving the unlocking operation of the door lock device and a drive signal for opening the door 10. Further, the drive signal for rotating the output shaft of the electric motor 22 in the other direction is used as both the drive signal for closing the door 10 and the drive signal for driving the locking operation of the door lock device.

Here, in the locking operation of the door locking device as described above, when a drive signal for rotating the output shaft of the electric motor 22 in the other direction is output, the door 10 is first closed. Thus, the elapsed time from when the above-described drive signal to the electric motor 22 is output to when the locking operation of the door lock device is completed includes the elapsed time during which the door 10 is closed. Therefore, in order to grasp the presence or absence of an abnormality related to the locking operation of the door locking device, a detection signal of a Door Closing Switch (DCS) for detecting the closing of the door 10 may be used. Specifically, the door closing elapsed time from when the drive signal is output to when the door closing switch detects that the door 10 is closed is calculated in addition to the elapsed time from when the drive signal is output to when the locking operation of the door lock device is completed. The predetermined time for the locking operation of the door locking device is determined as a predetermined time by adding a predetermined time for locking, which is determined in advance by an experiment or the like, to the door closing elapsed time. Then, the elapsed time from when the drive signal is output until the locking operation of the door lock device is completed is compared with a predetermined time, and if the elapsed time is longer than the predetermined time, it is determined that there is a delay in the operation of the door lock device. Further, it may be determined that the door locking device has a delay in operation when a time obtained by subtracting the door closing elapsed time from the elapsed time is longer than the predetermined time for locking.

In the unlocking operation of the door lock device as described above, when the drive signal is output to the electric motor 22, the door lock device is first operated without involving the operation of the door 10. Therefore, by calculating the elapsed time from when the drive signal to the electric motor 22 is output to when the door lock switch is turned off, the elapsed time relating to the unlocking operation of the door lock device can be accurately grasped. Therefore, it is possible to determine whether or not the operation of the door lock device is delayed based on the elapsed time. Further, if the voltage applied to the electric motor 22 or the current flowing to the electric motor 22 is detected while the door lock device is performing the locking operation and the unlocking operation, it is possible to grasp the failure of the electric motor and the electric system connected thereto.

The method of determining the time when the locking operation or the unlocking operation of the door lock device is completed is not limited to the method using the door lock switch. For example, the timing at which the locking operation or the unlocking operation of the door lock device is completed may be determined by monitoring the operation of the lock pin with a camera.

For example, a notification lamp or a buzzer for notifying an abnormality of the door lock device 30 may be provided in the driver's cab. Further, when a delay in the operation of the lock pin 34, a failure of the electric system, or the like is detected, a notification lamp may be turned on or a buzzer may be sounded.

A dedicated server may be provided outside the railway vehicle to function as a database that collectively stores information input from the door control unit 50. Further, the door control unit 50 may be connected to the server via an external communication network, and various information such as the presence or absence of an abnormality of the door locking device 30 and the unlock elapsed time H may be transmitted from the door control unit 50 to the server.

The storage unit of the door control unit 50 may store information such as the presence or absence of an abnormality in the door locking device 30 controlled by the door control unit 50 and the unlock elapsed time H. For example, if a plurality of door control units 50 are connected so as to be able to exchange information with each other, it is not necessary to read information from the database 14 when calculating the predetermined time H1.

The computer functioning as the state determination device of the door lock device is not limited to the door control unit 50. For example, the vehicle control device 12 or a server outside the railway vehicle may function as a state determination device for the door lock device. If the computer that is the target of the state determination device acquires information about the time when the drive signal for driving the door lock device is output and the time until the completion of the operation of the door lock device, the computer can calculate the unlock elapsed time and the lock elapsed time. In addition, in the computer that is the target of functioning as the state determination device, it is sufficient that it is determined that an abnormality has occurred in the door lock device when the unlock elapsed time or the lock elapsed time is longer than a predetermined time. That is, the computer to be a target functioning as the state determination device has a configuration including a calculation unit and a determination unit.

For example, when the vehicle control device 12 is used as the state determination device, the command signal W output from the vehicle control device 12 may be processed as a drive signal for driving the door lock device. Here, the door lock device is a device of the type using a solenoid as described in the above embodiment. In this case, when the vehicle control device 12 outputs the command signal W for opening the door 10 when the door 10 is in the fully closed state, the door control unit 50 that has received the command signal W outputs the excitation signal EM1 to cause the door locking device 30 to perform the unlocking operation. Then, the output of the lock signal LS from the door lock switch 38 is switched off, and this information is output to the vehicle control device 12. In this series of processes, the vehicle control device 12 calculates an elapsed time from the output of the command signal W until the acquisition of the information indicating that the lock signal LS has been switched off, and compares the elapsed time with a predetermined time, thereby making it possible to determine whether or not the door lock device 30 is abnormal. The predetermined time in this case is set to a value that takes into account the elapsed time from when the command signal W is output from the vehicle control device 12 to when the signal is received by the door control unit 50, the elapsed time from when the lock signal LS is switched to be input to the vehicle control device 12 for opening, and the like.

In addition, when the command signal W output from the vehicle control device 12 is processed as the drive signal for driving the door lock device as described above, it is determined that there is no abnormality in the door lock device according to the locking operation of the door lock device. In this case, when the vehicle control device 12 outputs the command signal W for closing the door 10 in the open state of the door 10, the door control unit 50 that receives the command signal W first causes the door 10 to perform the closing operation. Then, after the door 10 is fully closed, the door control unit 50 locks the door locking device 30. Then, the output of the lock signal LS from the door lock switch 38 is switched on, and this information is output to the vehicle control device 12. In this case, the elapsed time from when the vehicle control device 12 outputs the command signal W until the vehicle control device 12 acquires the information indicating that the lock signal LS is switched to on includes the elapsed time during which the door 10 performs the closing operation. Therefore, when the command signal W output from the vehicle control device 12 is processed as a drive signal of the door lock device, the detection signal of the door closing switch described above may be used. That is, if the door closing elapsed time from when the command signal W is output to when the door is closed is calculated using the detection signal of the door closing switch, it is possible to grasp whether there is a delay in the locking operation of the door locking device, as in the case of the modification in which the closing of the door 10 and the locking operation of the door locking device are driven by the rotation of the electric motor 22.

In the case where it is determined that there is an abnormality in the door lock device based on the elapsed time from the output of the command signal W from the vehicle control device 12 to the completion of the operation of the door lock device as in the above-described modified example, the server outside the railway vehicle may calculate the elapsed time and determine that there is an abnormality in the door lock device.

The door may also be single-opening. That is, the presence or absence of an abnormality in the door locking device for locking the single-opening door may be determined for the locking device.

The method of determining the abnormality of the door lock device is not limited to the method of comparing the elapsed time with the predetermined time, as long as the method is based on the elapsed time from when the drive signal is output until the locking operation or the unlocking operation of the door lock device is completed. For example, the elapsed times acquired each time the door is opened and closed are arranged in order, and the passage of the length of the elapsed time (tendency of change) is monitored. Further, it may be determined that an abnormality has occurred in the door lock device when the tendency of change exceeds a certain rate of rise, for example. Further, it may be determined that an abnormality has occurred in the door locking device when a ratio of a change in the elapsed time acquired at the previous time to a change in the elapsed time acquired at the next time is equal to or greater than a reference value.

The technical ideas that can be grasped from the above-described embodiments and modifications are described below.

[ additional notes 1]

A state determination program of a door locking device for causing a computer to execute:

a calculation process of calculating an elapsed time from when a drive signal for driving a door lock device is output to when an operation of the door lock device is completed; and

and a determination process of determining whether or not the door locking device has an abnormality based on the elapsed time.

In the above configuration, when an abnormality such as a delay in operation occurs in the door lock device, the elapsed time becomes long. Therefore, it can be determined whether or not the door lock device is abnormal based on the elapsed time.

Claims

1. A state determination device for a door lock device includes:

a calculation unit that calculates an elapsed time from when a drive signal for driving a door lock device is output to when a locking operation or an unlocking operation of the door lock device is completed; and

and a determination unit that determines whether or not the door locking device has an abnormality based on the elapsed time.

2. The state determining apparatus of a door locking apparatus according to claim 1,

the calculation unit calculates the elapsed time as a time when the operation of the door lock device is completed, the time when the output signal of the door lock switch is switched between a state in which the door lock device locks the door and a state in which the door is unlocked after the drive signal is output.

3. The state determining apparatus of a door locking apparatus according to claim 1 or 2,

the calculation portion calculates the elapsed time when the door locking device is unlocked.

4. The door locking device state determination device according to any one of claims 1 to 3,

when the elapsed time is longer than a predetermined time, the determination unit determines that an abnormality has occurred in the door lock device.

5. The state determining apparatus of a door locking apparatus according to claim 4,

the door lock device is mounted on a plurality of railway vehicles,

the determination unit calculates the predetermined time based on the elapsed time for the plurality of door locking devices in the same railway vehicle.

6. A state determination method of a door locking device, comprising:

a calculation step of calculating an elapsed time from when a drive signal for driving a door lock device is output to when an operation of the door lock device is completed; and

a determination step of determining whether or not the door locking device has an abnormality based on the elapsed time.

7. A computer-readable storage medium storing a state determination program for a door locking device, which when executed by a computer causes the computer to execute: