JP7709939B2 - Door system failure sign diagnosis system and failure sign diagnosis method - Google Patents

Description

The present invention relates to a failure sign diagnostic system and a failure sign diagnostic method for door systems.

From the perspective of improving the efficiency and labor saving of railway maintenance work, there is a demand for the development of failure prediction diagnosis technology for railway ground equipment. Among railway ground equipment, the platform door devices installed on station platforms have a major impact, such as causing delays in train operations, if a failure occurs. Therefore, there is a demand for the development of failure prediction diagnosis technology that can detect and diagnose the signs of a failure before it occurs.

The background art to the present invention is the technology described in Patent Document 1. Patent Document 1 describes a technology in which, in a switching device that can open and close by driving a motor, a drive current acquisition unit acquires the drive current of the motor, and a diagnosis unit identifies a current waveform based on the time change in the drive current acquired by the drive current acquisition unit, and diagnoses the soundness of the switching device based on the current waveform.

JP 2021-130378 A

Patent Document 1 discloses a method for diagnosing signs of malfunction in the drive units of each door in a platform door system installed on transportation platforms. However, because platform door systems also include command devices that control the opening and closing operation of each door, and communication devices that open and close in conjunction with the vehicle doors, it is necessary to detect signs of malfunction in these devices as well.

The present invention therefore aims to provide technology that enables predictive diagnosis of faults in the entire platform door system, including not only the drive units of each door, but also the control device and communication device.

In order to solve the above problems, one representative failure sign diagnosis system of the present invention is a failure sign diagnosis system that diagnoses failure signs of a door system having multiple doors, multiple opening/closing devices that control the opening and closing of each of the multiple doors, and a management unit that commands the multiple opening/closing devices to control the opening and closing timing of each of the multiple doors. The system is equipped with a data input unit that inputs information about the opening and closing times of each of the multiple doors from the door system, a memory unit that stores information about the opening and closing times of each of the multiple doors obtained from the data input unit, including past information, and a failure sign diagnosis unit that diagnoses failure signs of the door system by comparing the information about the opening and closing times obtained from the data input unit with information about the opening and closing times, including past information, obtained from the memory unit. If the opening and closing times of some of the multiple doors differ from the past opening and closing times of the doors, the failure sign diagnosis unit diagnoses that some of the door opening and closing devices have a failure sign, and if the opening and closing times of all of the multiple doors differ from the past opening and closing times of all of the doors, the failure sign diagnosis unit diagnoses that the management unit has a failure sign.

According to the present invention, it is possible to diagnose signs of malfunction in an entire door system, such as a platform door system, that has multiple opening and closing devices and a management unit that controls the opening and closing timing of the devices.
Problems, configurations and effects other than those described above will become apparent from the description of the following embodiments.

1 is a diagram showing a block configuration of a failure sign diagnosis system according to a first embodiment of the present invention and a door system to be diagnosed; FIG. 11 is a diagram illustrating an example of a processing flow of a storage unit in the first embodiment. FIG. 4 is a diagram illustrating an example of a processing flow of a failure sign diagnosing unit in the first embodiment. FIG. 11 is a diagram illustrating an example of a processing flow of a failure mode determination process for determining each failure mode. FIG. 11 is a diagram showing an example of a process flow of a failure mode determination process for each door performed by a failure sign diagnosis unit in the first embodiment. FIG. 11 is a block diagram showing a failure sign diagnosis system according to a second embodiment of the present invention, a door system to be diagnosed, and an intervening vehicle. FIG. 11 is a diagram illustrating an example of a processing flow of a storage unit in the second embodiment. FIG. 11 is a diagram illustrating an example of a processing flow of a failure sign diagnosing unit in the second embodiment. FIG. 11 is a diagram illustrating an example of a processing flow of a failure mode determination process for determining each failure mode.

Below, with reference to the drawings, we will explain Example 1 and Example 2, which are modes for carrying out the present invention. Note that the present invention is not limited to these examples. In addition, in the drawings, the same parts are denoted by the same reference numerals.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.
(Block configuration)
FIG. 1 is a block diagram showing a failure sign diagnosis system 100 according to a first embodiment of the present invention and a door system 200 to be diagnosed.

The failure sign diagnosis system 100 includes a data input unit 110, a memory unit 120, and a failure sign diagnosis unit 130.

The door system 200 includes a plurality of doors 210 and a management unit 220. Each door 210 includes an opening/closing device 211 therein.
Here, the door system is intended for platform doors installed on platforms at stations, etc., but is not limited thereto. For example, the present invention can also be applied to door systems for vehicle doors mounted on trains, etc. This point is the same in the first embodiment and in the second embodiment described later.

First, the individual components of the failure sign diagnosis system 100 will be described.
The data input unit 110 inputs opening/closing time information (open time and closed time) of each door 210 from the management unit 220 of the door system 200, and outputs the opening/closing time information to the memory unit 120 and the failure sign diagnosis unit 130. Note that the opening/closing time information may be input to the data input unit 110 not only from the management unit 220, but also directly from the opening/closing device 211 of each door 210 without going through the management unit 220.

In addition, if the door system 200 has a function capable of transmitting to a server installed in a vehicle depot or the like, or to a storage area constructed in a cloud environment, the failure sign diagnosis system 100 may be implemented in an environment in which it can connect to this storage area using public wireless communication or the like, and input from this storage area may be performed. This point is also the same in Example 2 described below.

The storage unit 120 inputs the opening and closing time information of each door 210 from the data input unit 110 and the diagnosis status from the failure sign diagnosis unit 130, updates the reference opening and closing time information of each door 210 based on the input information, and stores it in the storage area. At that time, door identification information may be assigned to each door 210 and stored together with this door identification information.

The memory unit 120 also acquires reference opening/closing time information (reference open time and reference close time) for each door 210 from the memory area and outputs it to the failure sign diagnosis unit 130. The operation mode (processing flow) of the memory unit 120 will be described later.

Here, with regard to the storage area, if the failure sign diagnosis system 100 has a storage area such as a memory, a hard disk, or an SSD, the data may be stored in that storage area, or if the failure sign diagnosis system 100 can connect to an external storage area via wired or wireless communication, the data may be stored in that storage area. This also applies to Example 2 described below.

The failure sign diagnosis unit 130 inputs the opening and closing time information of each door 210 from the data input unit 110 and the reference opening and closing time information of each door 210 from the memory unit, diagnoses failure signs based on the input information, and outputs the diagnosis results to the driver, the operation command (operation command center), the inspection and maintenance area (vehicle depot), etc. The operation mode (processing flow) of the failure sign diagnosis unit 130 will be described later.

The individual components of the door system 200 will now be described.
The door 210 is opened or closed by an opening/closing device 211 .
The opening/closing device 211 is equipped with a drive device (not shown) for opening and closing the door 210, inputs an opening/closing command (open command or close command) from the management unit 220, opens or closes the door 210 in accordance with the opening/closing command, and also outputs to the management unit 220 whether the door 210 is in an open or closed state.

The management unit 220 outputs an opening/closing command to the opening/closing device 211 of each door 210, and inputs the opening/closing state (open or closed state) of each door from the opening/closing device 211. The management unit 220 also calculates opening/closing time information of each door 210 from the timing of sending the opening/closing command and the change in the opening/closing state of each door 210 received from the opening/closing device 211, and outputs the information to the data input unit 110 of the failure sign diagnosis system 100.

Here, the method for calculating the open time and the close time will be described below.
Open time: the time from when the management unit 220 transmits a door open signal until when it receives from each opening/closing device 211 a notice that the open/closed state of each door 210 has changed to an open state. Close time: the time from when the management unit 220 transmits a door close signal until when it receives from each opening/closing device 211 a notice that the open/closed state of each door 210 has changed to a closed state.

(Operation of storage unit 120)
2 is a diagram showing an example of a processing flow of the storage unit 120 in the embodiment 1. The subject of each processing step described below is a processing unit included in the storage unit 120, but the description of the subject will be omitted below.

In step S<b>1001 , reference opening/closing time information for each door 210 is obtained from the storage area and output to the failure symptom diagnosis unit 130 .
In step S1002, opening and closing time information of each door 210 is obtained from the data input unit 110, and a value of a diagnosis state is obtained from the failure symptom diagnosis unit .

In step S1003, it is determined whether the diagnostic status value is 0 (normal), and if it is 0 (normal) (Yes), the process proceeds to step S1004, and if it is other than 0 (abnormal) (No), the process ends.

The subsequent processing from step S1004 to step S1008 is looped as many times as the number of doors 210 (=opening/closing devices 211) and is performed for each opening/closing time information of each door 210.

In step S1004, the reference time information, total opening/closing time information (total open time and total closed time), and total number of opening/closing times information (total number of times opened and total number of times closed) for each door 210 are obtained from the storage area.
In step S1005, the open time/closed time of each door 210 acquired from data input unit 110 is added to the total open time/total closed time of each door 210, respectively, and the process proceeds to step S1006.

In step S1006, the total number of times each door 210 is opened/closed is incremented by +1.
In step S1007, the reference open time information of each door 210 is updated using the following formula.
Reference open time=total open time÷total number of times opened Reference closed time=total closed time÷total number of times closed In step S1008, the updated reference opening/closing time information of each door 210 is stored in a storage area.

If processing has been completed for all doors 210, end processing; if not, return to step S1004.

(Operation of failure sign diagnosis unit 130)
3 is a diagram showing an example of a processing flow of the failure sign diagnosing unit 130 in the embodiment 1. The execution subject of each processing step described below is the failure sign diagnosing unit 130, but the description of the execution subject will be omitted below.

In step S1101, opening/closing time information of each door 210 is obtained from the data input unit 110, and reference opening/closing time information of each door 210 is obtained from the storage unit 120, respectively.
In step S1102, it is determined whether the absolute value of the difference between the open time and the reference open time and the absolute value of the difference between the closed time and the reference closed time are each equal to or less than a threshold value _d1 for all the doors 210. If the answer is Yes, the process proceeds to step S1103, and if the answer is No, the process proceeds to step S1106. The details of the threshold value _d1 will be described later.

In step S1103, the value of the diagnosis status is set to 0 (normal).
In step S1104, the value of the failure sign counter of the management unit 220 and the values of the failure sign counters of all the doors 210 are both initialized to zero.
In step S1105, the diagnosis state is output to the storage unit 120, and the process ends.

In step S1106, the value of the diagnosis status is set to 1 (possibility of abnormality).
In step S1107, a failure mode determination process, which will be described later, is performed.
In step S1108, it is determined whether or not there is a device whose failure mode value is other than 0 in the management unit 220 or each switching device 211. If there is (Yes), the process proceeds to step S1109, and if there is not (No), the process proceeds to step S1105.
In step S1109, the failure sign alert is notified to the driver, the operation command (operation command center), the inspection and maintenance area (car depot), etc. Details of the method of notifying the failure sign alert will be described later.

(Threshold value d ₁ )
Here, the threshold value _d1 will be described in detail.
The threshold value _d1 is a parameter indicating how many seconds longer the current open/close time must be than the reference open/close time before it is determined to be an abnormal value. For example, the threshold value _d1 may be set by calculating a value of 3σ, which is generally considered to be a statistical outlier, from a standard deviation σ calculated by collecting data on the open/close times of each door 210 in a normal state in advance, the number of data being such that the effects of operation and weather can be ignored, or, if a standard open/close time and a maximum or minimum open/close time are determined in the specifications of the door 210, the largest difference between the standard open/close time and the maximum or minimum open/close time may be set.

(Failure Mode and Failure Mode Judgment Process)
Next, the failure mode determination process in the failure sign diagnosing unit 130 will be described in detail.
First, the failure mode is a signal that indicates whether there is a failure symptom in the door system 200, and if there is a failure symptom, where and what kind of failure symptom is occurring.

The failure modes in the first embodiment are defined below.
Failure mode value '0': no sign of failure Failure mode value '1': there is a sign of failure in the control and transmission device of the management unit 220 Failure mode value '2': there is a sign of failure due to aging in the drive device of the opening and closing device 211 of a certain door 210 Failure mode value '3': there is a sign of horizontal distortion of the door or the rail supporting the door in the drive device of the opening and closing device 211 of a certain door 210 Failure mode value '4': there is a sign of vertical distortion of the door or the rail supporting the door in the drive device of the opening and closing device 211 of a certain door 210

Figure 4 is a diagram showing an example of the process flow of the failure mode determination process (step S1107 shown in Figure 3) for determining each failure mode. The failure sign diagnosis unit 130 is responsible for executing each processing step described below, but the description of this entity will be omitted below.

In step S1201, it is determined whether or not the absolute value of the difference between the open time and the reference open time and the absolute value of the difference between the closed time and the reference closed time are greater than a threshold value _d1 for all the doors 210. If the result is Yes, the process proceeds to step S1202, and if the result is No, the process proceeds to step S1206.

In step S1202, the value of the failure symptom counter in the management unit 220 is incremented by +1.
In step S1203, it is determined whether the value of the failure sign counter in the management unit is greater than a threshold value _d2 . If the result is Yes, the process proceeds to step S1204, and if the result is No, the process proceeds to step S1205. The details of the threshold value _d2 will be described later.

In step S1204, the failure mode value is set to 1, and the process ends.
In step S1205, the failure mode value is set to 0, and the process ends.
In step S1206, the failure mode determination process for each door 210 is performed, and the process ends. The failure mode determination process for each door 210 will be described in detail later.

(Threshold value _d2 )
Here, the threshold value _d2 will be described in detail.
The threshold value _d2 is a parameter indicating how many consecutive times the open/close times acquired from the management unit 220 must differ from the reference open/close times before it is determined that a failure symptom has occurred.
In a door system 200 such as a platform door, a phenomenon may occur in which the closing time is prolonged due to a foreign object being caught during the opening/closing operation, and the opening/closing time is suddenly different from the standard opening/closing time, which is not a sign of a malfunction. Therefore, as a method of calculating the threshold value _d2 , a value (e.g., a number of times such as 5 times or 10 times) is set that can be determined to be different from the standard opening/closing time every time, unlike the above-mentioned phenomenon.

(Failure Mode Determination Process for Door 210)
5 is a diagram showing an example of a processing flow of the failure mode determination process (step S1206 shown in FIG. 4) of each door 210 by the failure sign diagnosis unit 130 in the embodiment 1. The execution subject of each processing step described below is the failure sign diagnosis unit 130, but the description of the execution subject will be omitted below.

In step S1301, one of the doors 210 determined in step S1201 of the failure mode determination process to have either the difference between the open time and the reference open time or the difference between the closed time and the reference closed time greater than the threshold value _d1 is selected.
In step S1302, the value of the failure symptom counter for the selected door 210 is incremented by +1.

In step S1303, it is determined whether or not the value of the failure sign counter of the selected door 210 is greater than the threshold value _d2 . If the result is Yes, the process proceeds to step S1304, and if the result is No, the process proceeds to step S1307.

In step S1304, it is determined whether the total number of times the selected door 210 is opened or closed is greater than a threshold value _d3 . If the answer is Yes, the process proceeds to step S1305, and if the answer is No, the process proceeds to step S1309. The details of the threshold value _d3 will be described later.

In step S1305, the failure mode value of the selected door 210 is set to 2.
In step S1306, it is determined whether or not there remains any door 210 that has not been selected in step S1301. If the answer is Yes, the process ends, and if the answer is No, the process returns to step S1301.
In step S1307, the failure mode value of the selected door 210 is set to 0.

In step S1308, it is determined whether the difference between the open time and the reference open time of the selected door 210 and the difference between the closed time and the reference closed time are both greater than a threshold value _d1 . If Yes, the process proceeds to step S1309, and if No, the process proceeds to step S1310.

In step S1309, the failure mode value of the selected door 210 is set to 3. That is, if it is determined that the difference regarding the open time and the difference regarding the close time are both greater than the threshold value _d1, it is determined that there is a failure sign such as distortion in the horizontal direction of the door or the rail supporting the door, which are parts directly involved in the opening and closing operation.
In step S1310, the failure mode value of the selected door 210 is set to 4. That is, if it is determined that either the difference regarding the open time or the difference regarding the close time is greater than the threshold value _d1 , it is determined that there is a failure sign such as distortion in the vertical direction of the door or the rail supporting the door, which is a part not directly involved in the opening and closing operation.

(Threshold value _d3 )
Here, the threshold value _d3 will be described in detail.
The threshold value _d3 is a parameter for determining that the deterioration is due to the deterioration of the device or parts constituting the drive device of the opening/closing device 211, and is determined based on the total number of opening/closing times reached. For example, the deterioration of the device or parts that need to be replaced periodically, such as a timing belt or a motor brush, is the target.
The threshold value _d3 can be calculated, for example, by multiplying the service life of the device or part that needs to be replaced by the annual number of openings or closings calculated from the operation of the train. If there are multiple devices or parts that need to be replaced, the threshold value d3 may be calculated by multiplying the service life of the device or part with the shortest service life by the above-mentioned annual number of openings or closings. Furthermore, if there are devices or parts that have already been replaced at the time when the failure sign diagnosis system 100 is introduced, the device or part with the shortest remaining service life at the time when the failure sign diagnosis system 100 is introduced may be selected and calculated.

(Pre-failure alert notification)
Next, a method for reporting a failure symptom alert will be described.
The failure sign alert is a function that notifies the driver, the operation control center, or the inspection and maintenance area (vehicle depot), etc., that a failure sign has been detected in the door system 200, by at least one of a screen display and an audio sound.

When the failure sign diagnosis system 100 is installed on a train, the failure sign diagnosis system 100 outputs a failure sign alert to a vehicle information control device (not shown), and the vehicle information control device (not shown) displays a screen on a display device such as a driver's cab to the effect that a failure sign has been detected. Alternatively, the failure sign diagnosis system 100 may directly display a screen on a display device such as a driver's cab to the effect that a failure sign has been detected.

In addition, if the failure sign diagnosis system 100 has a function of transmitting vehicle data collected by a vehicle information control device (not shown) to a ground system located at an operation command (operation command center) or an inspection and maintenance area (vehicle depot) using a public wireless communication network or the like, the failure sign alert is included in the vehicle data and transmitted to the ground system. As a result, the failure sign alert may be notified via the ground system on a screen or the like provided on the ground system.

Furthermore, in the case where a ground system at an operation control center (operation control center) or an inspection and maintenance area (vehicle depot) implements the failure sign diagnosis system 100, the failure sign diagnosis system 100 may display a failure sign alert on a screen or the like provided in the ground system.
(Action and Effect)
As described above, the failure prediction diagnosis system of Example 1 makes it possible to detect failure predictions not only for the drive devices of the opening and closing devices of each door, but also for the entire door system including the management unit, for a door system consisting of a management unit and opening and closing devices that control the opening and closing of multiple door devices.

The failure sign diagnosis system according to the first embodiment also has a function of calculating standard opening and closing times when the equipment is normal from past opening and closing time information, and a function of comparing the past opening and closing times with the current opening and closing times to determine that there is a failure sign in the door system management section if the opening and closing times of all doors are different from the past opening and closing times, and a function of determining that there is a failure sign in the specific door if the opening and closing times of a specific door are different from the past opening and closing times.

Furthermore, the failure sign diagnosis system 100 according to the first embodiment has a function of determining the cause of a failure in the drive device of the door opening/closing device by considering the number of times opening and closing operations have been performed so far and the difference between the opening time and closing time in the past and the past opening/closing time, respectively, with respect to the door failure sign.

Second Embodiment A second embodiment of the present invention will be described with reference to FIGS.
(Block configuration)
FIG. 6 is a block diagram showing a failure sign diagnosis system 100 according to a second embodiment of the present invention, a door system 200 to be diagnosed, and an intervening vehicle 300.

In the second embodiment, the components of the failure sign diagnosis system 100 and the components of the door system 200 are the same as those in the first embodiment, but differ from the first embodiment in that a command for opening and closing the door system 200 is transmitted from the vehicle 300.

In the following, Example 2 will be described using as an example a case where there are multiple door systems 200 and multiple vehicles 300, such as platform doors installed at each station on a railway line and trains running on that line, and a specific vehicle 300 stops at a specific door system 200.

Note that the explanation of each component of the failure sign diagnosis system 100 and the door system 200 will be omitted because they are the same as those in the first embodiment. In addition, the explanation of the input and output of each part will be limited to the differences from the first embodiment.

The vehicle 300 includes a vehicle information control unit 310, a first transmission unit 320, and a second transmission unit 330. In addition, the vehicle 300 also includes functions and equipment for running, such as wheels, a driver for controlling the running or functions and equipment for automatic driving control that replaces the driver, etc., but since these do not directly affect the operating mode of the second embodiment, their description will be omitted.

The data input unit 110 inputs the opening and closing time information of each door 210, including vehicle identification information (e.g., information on which vehicle 300 the information was obtained from) and door system identification information (information on which door system 200 the information was obtained from), from the first transmission unit 320 of the vehicle 300, and outputs the information to the memory unit 120 and the failure sign diagnosis unit 130.

Here, the method of inputting the opening/closing time information in the data input unit 110 may be such that the opening/closing time information is input directly from the first transmission unit 320 of the vehicle 300 to the failure sign diagnosis system 100 via public wireless communication or the like, or, if the vehicle has a function capable of transmitting to a server installed in a vehicle depot or the like or a storage area constructed in a cloud environment, the failure sign diagnosis system 100 is implemented in an environment in which it can be connected to this storage area, and the information is input from this storage area.

The memory unit 120 acquires the reference opening/closing time information of each door 210 of the door system 200 that matches the door system identification information from the memory area, and outputs it to the failure sign diagnosis unit 130. It also inputs the opening/closing time information of each door 210 from the data input unit, updates the reference opening/closing time information of each door 210 of the door system 200 that matches the door system identification information, and stores it in the memory area. The operation of the memory unit 120 will be described in detail later.

The failure sign diagnosis unit 130 inputs the opening and closing time information of each door 210 from the data input unit 110 and the reference opening and closing time information of each door 210 of the door system 200 that matches the door system identification information from the storage unit 120, diagnoses failure signs based on the input information, and outputs the diagnosis result to the driver, the driving command (driving command center), the inspection and maintenance area (vehicle depot), etc. The method of outputting to the driver, the driving command (driving command center), the inspection and maintenance area (vehicle depot), etc. is the same as in Example 1, so the explanation is omitted. The operation mode (processing flow) of the failure sign diagnosis unit 130 will be described later.

The management unit 220 of the door system 200 receives an opening/closing command from the second transmission unit 330 of the vehicle 300 and outputs the opening/closing command to the opening/closing device 211 of each door 210. The management unit 220 also receives the opening/closing state of each door (whether it is open or closed) from the opening/closing device 211 and outputs it to the second transmission unit 330 of the vehicle 300.

The vehicle information control unit 310 of the vehicle 300 communicates with the data input unit 110 of the failure sign diagnosis system 100 via the first transmission unit 320. The vehicle information control unit 310 also communicates with the management unit 220 of the door system 200 via the second transmission unit 330, outputs an opening/closing command to the management unit 220, and inputs the opening/closing state of each door 210 from the management unit 220.

Furthermore, the vehicle information control unit 310 calculates opening and closing time information for each door 210 from the input open/closed state of each door 210, and outputs this opening and closing time information to the data input unit 110 by adding vehicle identification information and door system identification information.
The method for calculating the opening/closing time information will be described below.
Open time: the time from when the vehicle information control unit 310 transmits a door open signal until when it receives from the management unit 220 a notice that the open/closed state information of each door 210 has changed to an open state. Close time: the time from when the vehicle information control unit 310 transmits a door close signal until when it receives from the management unit 220 a notice that the open/closed state information of each door 210 has changed to a closed state.

(Operation of storage unit 120)
7 is a diagram showing an example of a processing flow of the storage unit 120 in the embodiment 2. In the following, only the differences from the embodiment 1 will be described, and the subject of each processing step is a processing unit of the storage unit 120, but the description of the subject will be omitted.

In step S1401, door system identification information included in the opening/closing time information is obtained from the data input unit 110.
In step S1402, the door system 200 that matches the door system identification information is selected.
In step S1403, the reference time information of each door 210 of the door system 200 is obtained from the storage area, and output to the failure sign diagnosis unit 130.

The process contents of steps S1002 and S1003 are the same as those in the first embodiment, and therefore description thereof will be omitted.
The subsequent processes from step S1404 to step S1008 are looped as many times as the number of doors 210 (=opening/closing devices 211) in the door system 200, and are performed for each piece of opening/closing time information of each door 210.

In step S1404, the reference time information, total opening/closing time information (total open time and total closed time), and total opening/closing count information (total number of times opened and total number of times closed) of each door 210 of the door system 200 are obtained from the memory area.
The process contents from step S1005 to step S1008 are the same as those in the first embodiment, and therefore the description thereof will be omitted.

(Operation of failure sign diagnosis unit 130)
8 is a diagram showing an example of a processing flow of the failure sign diagnosis unit 130 in the embodiment 2. Only the differences from the embodiment 1 will be described below, and each processing step is executed by the failure sign diagnosis unit 130, but the description of the execution entity will be omitted below.

The process contents from step S1101 to step S1103, step S1105, step S1106, and step S1109 are the same as those in the first embodiment, and therefore the description thereof will be omitted.
However, the failure mode determination process in step S1107 differs from that in the first embodiment and will be described later.

In step S1501, the value of the failure sign counter of the management unit 220 in the door system 200 that matches the door system identification information and the values of the failure sign counters of all the doors 210 are each initialized to 0.
In step S1502, the value of the failure sign counter of the vehicle 300 that matches the vehicle identification information is initialized to 0.

In step S1503, it is determined whether or not there is a device whose failure mode value is other than 0 in the vehicle 300 that matches the vehicle identification information, the management unit 220 in the door system 200 that matches the door system identification information, and any of the doors 210. If there is (Yes), proceed to step S1109; if there is not (No), proceed to step S1105.

(Failure Mode and Failure Mode Judgment Process)
Next, regarding the failure modes and the failure mode determination process, only the differences from the first embodiment will be described.
In the failure mode in the second embodiment, in addition to the failure mode values 0 to 4 in the first embodiment, the following failure mode values are defined. Failure mode value '5': There is a failure symptom in the second transmission unit 330 of a certain vehicle 300.

Figure 9 is a diagram showing an example of the process flow of the failure mode determination process (step S1107 shown in Figure 8) for determining each failure mode. Below, only the differences from Example 1 are explained, and each processing step is executed by the failure symptom diagnosis unit 130, but the description of this entity is omitted below.

In step S1201, the same processing as in Example 1 is performed, and if the answer is Yes, the process proceeds to step S1601; if the answer is No, the process proceeds to step S1206.

In step S1601, the value of the failure sign counter in the management unit 220 of the door system 200 that matches the door system identification information is incremented by +1.
In step S1602, the value of the failure symptom counter of the vehicle 300 that matches the vehicle identification information is incremented by +1.

In step S1203, the same processing as in Example 1 is performed, and if the answer is Yes, proceed to step S1204; if the answer is No, proceed to step S1603.

In step S1603, it is determined whether or not the value of the failure sign counter of the vehicle 300 is greater than the threshold value _d2 . If Yes, the process proceeds to step S1604, and if No, the process proceeds to step S1605.
In step S1604, the value of the failure mode is set to 5, and the process ends. That is, it is determined that there is a failure symptom in the second transmission unit 330 that communicates with the management unit 220 of the corresponding door system 200 in the vehicle 300.

The processing contents of steps S1205 and S1206 are the same as those in Example 1, so the explanation will be omitted.

(Action and Effect)
As described above, the failure prediction diagnosis system of Example 2 performs failure prediction diagnosis of the door system that controls the operation of the opening and closing device by receiving an opening and closing command from the vehicle, and is therefore also capable of detecting failure predictions of the communication device between the vehicle and the door device.

The failure prediction diagnosis system also has the ability to determine whether a failure symptom has occurred in the communication device on the vehicle side or the door system side, and, when there are multiple vehicles and door systems, the ability to identify which vehicle or which door system has experienced the failure symptom.

In other words, the failure sign diagnosis system according to the second embodiment makes it possible to detect failure signs in the entire door system, including the communication device with the vehicle, in a door system that controls the operation of the opening and closing device by receiving an opening and closing command from the vehicle.

Although the present invention has been described above with reference to Examples 1 and 2, the present invention is not limited to the above-mentioned Examples 1 and 2, and various modifications are possible within the scope of the gist of the present invention. For example, the above-mentioned Examples 1 and 2 have been described in detail to clearly explain the present invention, but the present invention is not necessarily limited to those having all of the configurations described. Other aspects conceivable within the scope of the technical concept of the present invention are also included within the scope of the present invention.

Furthermore, the above-mentioned configurations, functions, processing units, etc. may be realized in part or in whole in hardware, for example by designing them as integrated circuits. Furthermore, the above-mentioned configurations and functions, etc. may be realized in software by a processor interpreting and executing a program that realizes each function. Information such as the programs, tables, and files that realize each function can be stored in a storage device such as a memory, a hard disk, or an SSD (Solid State Drive), or in a storage medium such as an IC card, an SD card, or a DVD.

100...failure sign diagnosis system, 110...data input unit, 120...storage unit,
130: failure sign diagnosis unit, 200: door system, 210: door, 211: opening/closing device,
220: management unit, 300: vehicle, 310: vehicle information control unit,
320: first transmission section; 330: second transmission section

Claims (14)

A failure sign diagnosis system for diagnosing a failure sign of a door system having a plurality of doors, a plurality of opening/closing devices for controlling opening/closing of each of the plurality of doors, and a management unit for instructing the plurality of opening/closing devices on the opening/closing timing of each of the plurality of doors,
a data input unit for inputting information regarding opening and closing times of each of the plurality of doors from the door system;
a storage unit that stores information regarding the opening and closing times of each of the plurality of doors acquired from the data input unit, including past information;
a failure sign diagnosing unit that compares information regarding the opening and closing time acquired from the data input unit with information regarding the opening and closing time including past information acquired from the storage unit, and diagnoses a failure sign of the door system,
a failure sign diagnosis unit that, when the opening/closing time of a part of the plurality of doors differs from the past opening/closing time of the part of the doors, diagnoses that there is a failure sign in the opening/closing device of the part of the doors, and, when the opening/closing time of all of the plurality of doors differs from the past opening/closing time of all of the doors, diagnoses that there is a failure sign in the management unit. 2. The failure sign diagnosis system according to claim 1,
A failure sign diagnosis system characterized in that past information regarding the opening and closing times of each of the multiple doors is updated based on information regarding the opening and closing times of each of the multiple doors and information regarding the past total opening and closing time and total number of openings and closings of each of the multiple doors, and the memory unit stores the opening and closing times as a basis for diagnosing the failure signs for each of the multiple doors. 2. The failure sign diagnosis system according to claim 1,
A failure sign diagnosis system, characterized in that, when the failure sign diagnosis unit diagnoses the presence of the failure sign, it notifies the failure sign by at least one of a screen display and an audible sound. 4. A failure sign diagnosis system according to claim 1,
The failure prediction diagnosis system is characterized in that, when the failure prediction diagnosis unit diagnoses that there is a failure indication in the opening and closing device of one of the doors, if the number of openings and closings by the opening and closing device up to the diagnosis is greater than the number of openings and closings expected based on the useful life of the equipment or parts that constitute the opening and closing device, it determines that there is a failure indication in the equipment or parts. 4. A failure sign diagnosis system according to claim 1,
The failure sign diagnosis system is characterized in that, when the failure sign diagnosis unit diagnoses that there is a failure sign in the opening and closing device of some of the doors, and further, when the number of openings and closings by the opening and closing device up to the diagnosis is equal to or less than the number of openings and closings expected from the useful life of the equipment or parts that constitute the opening and closing device, if both the opening times and closing times of some of the doors are different from the past opening times and closing times of the doors, it determines that there is a horizontal failure sign in some of the doors or a rail portion supporting the doors, and if either the opening time or the closing time of some of the doors is different from the past opening time or closing time of the doors, it determines that there is a vertical failure sign in some of the doors or a rail portion supporting the doors. 4. A failure sign diagnosis system according to claim 1,
When the management unit of the door system and the data input unit of the failure sign diagnosis system communicate with each other via a plurality of external devices,
The failure sign diagnosis system is characterized in that, when the failure sign is diagnosed based on the information regarding the opening and closing times acquired via a portion of the plurality of external devices, the failure sign diagnosis unit determines that a failure sign exists in the portion of the external devices, and when the failure sign is diagnosed based on the information regarding the opening and closing times acquired via all of the plurality of external devices, the failure sign diagnosis unit determines that the door system has the failure sign described in claim 1. 7. A failure sign diagnosis system according to claim 6,
When a plurality of door systems are present, identification information is assigned to each of the plurality of external devices and each of the plurality of door systems;
The failure sign diagnosis system is characterized in that the failure sign diagnosis unit identifies the door system and the external device for which the failure sign has been diagnosed using the identification information. A failure sign diagnosis method for diagnosing a failure sign of a door system having a plurality of doors, a plurality of opening/closing devices for controlling opening/closing of the plurality of doors, and a management unit for instructing the plurality of opening/closing devices on the opening/closing timing of each of the plurality of doors, comprising:
inputting information regarding the opening and closing times of each of the plurality of doors from the management unit;
storing information on the opening and closing times of each of the plurality of doors, including past information;
a detection method for a failure sign comprising the steps of: comparing information regarding the opening and closing times with information including the past opening and closing times; if the opening and closing times of a part of the plurality of doors differ from the past opening and closing times of the part of the doors, diagnosing that there is a failure sign in the opening and closing device of the part of the doors; and if the opening and closing times of all of the plurality of doors differ from the past opening and closing times of all of the doors, diagnosing that there is a failure sign in the management unit. 9. A failure sign diagnosis method according to claim 8, comprising:
A failure sign diagnosis method characterized by updating past information regarding the opening and closing times of each of the multiple doors based on information regarding the opening and closing times of each of the multiple doors and information regarding the total past opening and closing time and total number of openings and closings of each of the multiple doors, and storing the information as the opening and closing times that serve as a basis for diagnosing the failure signs for each of the multiple doors. 9. A failure sign diagnosis method according to claim 8, comprising:
A failure sign diagnosing method, comprising the steps of: notifying, when the presence of the failure sign is diagnosed, the failure sign by at least one of a screen display and an audible sound. A failure sign diagnosis method according to any one of claims 8 to 10, comprising:
A failure sign diagnosis method comprising: diagnosing that the opening and closing device of one of the doors is showing signs of failure; and, if the number of openings and closings by the opening and closing device up until the diagnosis is greater than the number of openings and closings expected based on the service life of the equipment or parts that make up the opening and closing device, determining that the equipment or parts are showing signs of failure. A failure sign diagnosis method according to any one of claims 8 to 10, comprising:
a failure sign diagnosis method for diagnosing that the opening and closing device of some of the doors is showing signs of failure, and further, when the number of openings and closings by the opening and closing device up to the diagnosis is equal to or less than the number of openings and closings expected from the useful life of the equipment or parts that constitute the opening and closing device, if both the opening times and closing times of some of the doors are different from the past opening times and closing times of the doors, it is determined that there is a horizontal failure sign in some of the doors or a rail portion supporting the doors, and if either the opening time or the closing time of some of the doors is different from the past opening times or closing times of the doors, it is determined that there is a vertical failure sign in some of the doors or a rail portion supporting the doors. A failure sign diagnosis method according to any one of claims 8 to 10, comprising:
When the management unit of the door system communicates via a plurality of external devices,
A failure sign diagnosis method characterized by: when the failure sign is diagnosed based on information regarding the opening and closing times obtained via a portion of the plurality of external devices, it is determined that the failure sign exists in the portion of the external devices; and when the failure sign is diagnosed based on information regarding the opening and closing times obtained via all of the plurality of external devices, it is determined that the door system has the failure sign described in claim 8. 14. A failure sign diagnosis method according to claim 13, comprising:
When there are a plurality of door systems, the method for diagnosing failure signs is characterized in that identification information is assigned to each of the plurality of external devices and the plurality of door systems, and the identification information is used to identify the door system and the external device for which the failure signs have been diagnosed.