Data reader for railroad vehicle and system

Abstract

To provide a data reader for railroad vehicles and a system, enabling more suitable data reading.SOLUTION: A data reader for railroad vehicles reads data stored in a first storage unit provided in a railroad vehicle and stores it in a second storage unit provided on the ground side. The data reader for railroad vehicles includes a difference detection unit and a first memory control unit. The difference detection unit detects a difference between the data stored in the first storage unit and data stored in the second storage unit. The first memory control unit stores data stored in the first storage unit corresponding to the difference detected by the difference detection unit in the second storage unit.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] Embodiments according to the present invention relate to a data reading device and a system for railway vehicles.

Background Art

[0002] In railway vehicles, for example, a data storage device is installed for each formation, and data of each car (vehicle data) is collected in the data storage device. The collected vehicle data is read from the data storage device and used for data analysis and the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a data reading device and a system for railway vehicles that can read data more appropriately.

Means for Solving the Problems

[0005] The data reading device for railway vehicles according to the present embodiment is a data reading device for railway vehicles that reads data stored in a first storage unit provided in a railway vehicle and stores it in a second storage unit provided on the ground side. The data reading device for railway vehicles includes a difference detection unit and a first storage control unit. The difference detection unit detects the difference between the data stored in the first storage unit and the data stored in the second storage unit. The first storage control unit stores the data stored in the first storage unit corresponding to the difference detected by the difference detection unit in the second storage unit.

Brief Description of the Drawings

[0006]

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MODE FOR CARRYING OUT THE INVENTION

[0007] Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment does not limit the present invention. The drawings are schematic or conceptual, and the ratios of the respective parts are not necessarily the same as those in reality. In the specification and the drawings, the same reference numerals are given to the same elements as those described above with respect to the already shown drawings, and the detailed description is omitted as appropriate.

[0008] (First Embodiment) FIG. 1 is a block diagram showing an example of the configuration of a system 100 according to the first embodiment.

[0009] The system includes a railway vehicle RV, a vehicle data storage device 1, and a reading terminal 3.

[0010] Various sensors (not shown) are provided on the railway vehicle RV. The vehicle data measured by the sensors is stored in the vehicle data storage device 1. The vehicle data includes, for example, information regarding the brakes of the railway vehicle RV and the opening / closing information of the doors of the railway vehicle RV.

[0011] The vehicle data storage device 1 is provided (onboard) inside the railway vehicle RV. The vehicle data storage device 1 is provided, for example, for each formation and stores the vehicle data of each car in the formation.

[0012] The reading terminal 3 reads vehicle data from the vehicle data storage device 1. The reading terminal 3 is, for example, a PC (Personal Computer). The reading terminal 3 is connected to the vehicle data storage device 1 via the cable 2, for example, when reading (synchronizing) vehicle data from the vehicle data storage device 1. The cable 2 is, for example, a LAN (Local Area Network) cable. Also, the reading of vehicle data is performed, for example, in a car shed such as an inspection shed.

[0013] Next, the configurations of the vehicle data storage device 1 and the reading terminal 3 will be described.

[0014] FIG. 2 is a block diagram showing an example of the configurations of the vehicle data storage device 1 and the reading terminal 3 according to the first embodiment.

[0015] The vehicle data storage device 1 includes an on-vehicle storage control unit 11 and an on-vehicle storage unit 12.

[0016] The on-vehicle storage control unit (second storage control unit) 11 stores the vehicle data transmitted from the sensors of each car in the on-vehicle storage unit 12. The on-vehicle storage control unit 11 continuously stores the vehicle data transmitted from the sensors in the on-vehicle storage unit 12 while the railway vehicle RV is running.

[0017] Also, the on-vehicle storage control unit 11 acquires vehicle data from the on-vehicle storage unit 12 during synchronization and transmits it to the reading terminal 3.

[0018] The on-vehicle storage unit 12 stores vehicle data. The on-vehicle storage unit (first storage unit) 12 is provided on the vehicle.

[0019] The reading terminal 3 includes a ground storage control unit 31, a ground storage unit 32, and a difference detection unit 33. The reading terminal (data reading device for railway vehicle) 3 reads the vehicle data stored in the on-vehicle storage unit 12 provided in the railway vehicle RV and stores it in the ground storage unit 32 provided on the ground side. Also, the reading terminal 3 reads the vehicle data from the on-vehicle storage unit 12 of the vehicle data storage device 1 via the cable 2.

[0020] The ground storage control unit (first storage control unit) 31 stores the vehicle data transmitted from the on-vehicle storage control unit 11 of the vehicle data storage device 1 in the ground storage unit 32.

[0021] The ground storage unit 32 stores the vehicle data. The ground storage unit (second storage unit) 32 is provided on the ground. The ground storage unit 32 is provided, for example, inside the reading terminal 3.

[0022] The difference detection unit 33 detects the difference between the vehicle data stored in the on-vehicle storage unit 12 and the vehicle data stored in the ground storage unit 32. The difference data corresponds to the "data to be synchronized" shown in FIG. 2.

[0023] Note that the details of the difference detection by the difference detection unit 33 will be described later with reference to FIGS. 3 to 5.

[0024] Also, the on-vehicle storage control unit 11 is realized by, for example, one CPU (Central Processing Unit). The ground storage control unit 31 and the difference detection unit 33 may be realized by one CPU or may be realized by individual CPUs.

[0025] Next, the operations of the on-vehicle storage control unit 11 and the ground storage control unit 31 regarding the difference will be described.

[0026] The on-vehicle storage control unit 11 stores vehicle data in the on-vehicle storage unit 12 so that the difference detection unit 33 can detect differences. The on-vehicle storage control unit 11 stores (saves) the vehicle data in the on-vehicle storage unit 12, for example, in association with the update date and time, etc. The on-vehicle storage control unit 11 stores the vehicle data with a desired file name, or stores the vehicle data in a desired folder configuration. Also, the on-vehicle storage control unit 11 acquires the vehicle data corresponding to the difference detected by the difference detection unit 33 from the on-vehicle storage unit 12 and outputs it to the ground storage control unit 31. That is, the on-vehicle storage control unit 11 selects the difference data to be read from the on-vehicle storage unit 12 and transmits it to the ground storage control unit 31.

[0027] The ground storage control unit 31 acquires the difference data from the on-vehicle storage control unit 11 and stores it in the ground storage unit 32. That is, the ground storage control unit 31 stores the vehicle data stored in the on-vehicle storage unit 12 corresponding to the difference detected by the difference detection unit 33 in the ground storage unit 32.

[0028] Next, the details of the difference detection method will be described.

[0029] FIG. 3 is a diagram showing an example of a folder configuration according to the first embodiment.

[0030] In the example shown in FIG. 3, the folders are classified by the type of main line and the update date and time, etc.

[0031] FIG. 4 is a diagram showing an example of a folder in the on-vehicle storage unit 12 according to the first embodiment. FIG. 5 is a diagram showing an example of a folder in the ground storage unit 32 according to the first embodiment.

[0032] The difference detection unit 33 detects a difference based on the file name of the vehicle data. More specifically, the on-vehicle storage control unit 31 stores the vehicle data stored in the on-vehicle storage unit 12 in the on-ground storage unit 32 in order from the latest update date and time. In the example shown in FIG. 4, the on-vehicle storage control unit 31 stores "Sample 1", "Sample 2", and "Sample 3" stored in the on-vehicle storage unit 12 in this order in the on-ground storage unit 32. The difference detection unit 33 detects a difference when the on-vehicle storage control unit 31 replaces and stores the same file name. That is, a difference is detected by performing replacement storage once. Also, the on-vehicle storage control unit 31 stops storing the vehicle data at the timing when the difference detection unit 33 detects a difference. In the example shown in FIG. 5, the file of "Sample 2" is already stored in the on-ground storage unit 32. Therefore, the on-vehicle storage control unit 31 stores "Sample 1", which is the differential data, in the on-ground storage unit 32, and then performs replacement storage of "Sample 2". Thereby, the on-vehicle storage control unit 31 stops storing the vehicle data in the on-ground storage unit 32. The differential data, that is, the synchronized data, corresponds to "Sample 1" shown in FIG. 4.

[0033] As described above, according to the first embodiment, the difference detection unit 33 detects the difference between the vehicle data stored in the on-vehicle storage unit 12 and the vehicle data stored in the on-ground storage unit 32. The on-vehicle storage control unit 31 stores the vehicle data stored in the on-vehicle storage unit 12 corresponding to the difference detected by the difference detection unit 33 in the on-ground storage unit 32. Thereby, the vehicle data in the on-vehicle storage unit 12 newly added to the vehicle data in the on-ground storage unit 32 can be selectively stored (synchronized) in the on-ground storage unit 32. As a result, the vehicle data can be read out more appropriately.

[0034] Also, in the first embodiment, as shown in the example of FIG. 2, all the vehicle data in the on-vehicle storage unit 12 can be transmitted to the on-ground side. The vehicle data has high versatility and is used, for example, for the inspection of the railway vehicle RV. By moving all of the vehicle data on the on-vehicle side to the on-ground side, the functions in terms of prevention such as inspection replacement and preventive maintenance can be improved.

[0035] In addition, in the first embodiment, the introduction of the reading terminal 3 is easy, and the connection method and equipment between the vehicle and the ground are simple. Thereby, it is easy to add functions according to the usage purpose.

[0036] In addition, in the first embodiment, the transfer of vehicle data between the on-vehicle storage unit 12 and the ground storage unit 32 is one-way from the vehicle to the ground. That is, the reading terminal 3 does not store the vehicle data stored in the ground storage unit 32 in the on-vehicle storage unit 12. Thereby, the processing between the vehicle and the ground (for example, data format) can be reduced. As a result, the influence at the time of network change can be suppressed.

[0037] In the first embodiment, the ground storage unit 32 is provided in the reading terminal 3, but it may be provided outside the reading terminal 3. Even in this case, the ground storage unit 32 is provided on the ground.

[0038] Next, a first comparative example in the case where the difference detection is not performed will be described. In the first comparative example, for example, the user operates the reading terminal 3 to check the vehicle data in the on-vehicle storage unit 12 and select the vehicle data to be read from the on-vehicle storage unit 12. In this case, there is a possibility that the data may overlap, and it also takes time and effort.

[0039] On the other hand, in the first embodiment, by connecting the cable 2, the vehicle data not stored in the ground storage unit 32 is automatically read. Thereby, data duplication can be suppressed, and time and effort can also be suppressed.

[0040] Next, a second comparative example in the case where difference detection is not performed will be described. In the second comparative example, the determined vehicle data is read by wireless communication in response to a predetermined trigger. However, in this case, there may be problems such as duplication of vehicle data and transmission time, and an increase in the capacity of the recording memory associated therewith. As the trigger, for example, when a railway vehicle RV arrives at a station, a trigger for sending vehicle data during travel between stations, and a trigger for sending the previous vehicle data when a failure is detected may be set. For example, when a failure occurs between station A and station B, there is a possibility that part of the vehicle data sent to the ground side will overlap.

[0041] On the other hand, in the first embodiment, since difference data is detected, duplication of data can be suppressed. In addition, the amount of data to be exchanged can be significantly reduced.

[0042] (First Modified Example) The first modified example is different from the first embodiment in that differences are detected based on the storage date and time included in the file name of the vehicle data.

[0043] The on-vehicle storage control unit 11 changes the file name of the vehicle data to include the storage date and time, and stores the vehicle data in the on-vehicle storage unit 12. The file name includes, for example, "year / month / day_hour / minute / second".

[0044] The difference detection unit 33 detects differences based on the storage date and time of the vehicle data included in the file name of the vehicle data. More specifically, the difference detection unit 33 detects differences based on the latest storage date and time of the vehicle data stored in the ground storage unit 32 and the storage date and time of the vehicle data stored in the on-vehicle storage unit 12.

[0045] In addition, the ground storage control unit 31 does not store the vehicle data with the file name including the latest storage date and time stored in the on-vehicle storage unit 12 in the ground storage unit 32. This is because the latest vehicle data may be incomplete.

[0046] As in the first modification example, differences may be detected based on the save date and time included in the file name of the vehicle data. The system 100 according to the first modification example can obtain the same effects as those of the first embodiment. Further, the difference detection method of the first modification example and the difference detection method of the first embodiment may be combined. In this case, difference detection is performed using a plurality of conditions.

[0047] (Second Modification Example) FIG. 6 is a diagram showing an example of a folder name according to the second modification example. The second modification example is different from the first embodiment in that differences are detected based on the folder name.

[0048] The on-vehicle storage control unit 11 stores the vehicle data in the on-vehicle storage unit 12 and changes the folder name of the folder in which the vehicle data is stored. That is, the on-vehicle storage control unit 11 replaces the stored folder with another management name.

[0049] In the example shown in FIG. 6, the folder name is changed using the sum of the update date and time and the file size. In the example shown in FIG. 6, the update date and time is 15:41:35, and the file size is 23,958 bytes. The on-vehicle storage control unit 11 changes the folder name to 177,953, which is the sum of 154,135 corresponding to the update date and time and 23,958 corresponding to the file size, for example.

[0050] The difference detection unit 33 detects differences based on the folder name of the folder in which the vehicle data is stored. More specifically, the difference detection unit 33 detects differences by comparing the folder names changed based on the update date and time and the file size between the on-vehicle storage unit 12 and the off-vehicle storage unit 32. The difference detection unit 33 creates and collates a management name list, for example. After collation, the difference detection unit 33 checks the capacity (file size) of the folder. If the capacity is small for the folder name, there is an error, and if the capacity is large for the folder name, there is duplication of vehicle data.

[0051] In the second modification, the difference detection unit 33 compares the vehicle data in the in-vehicle storage unit 12 and the vehicle data in the ground storage unit 32 for each synchronization. As a result, even the vehicle data deleted by the reading terminal 3 (ground side) can be read again.

[0052] Note that the folder name is not limited to the update date and time and the file size, and other information may be included.

[0053] As in the second modification, the difference may be detected by the folder name. The system 100 according to the second modification can obtain the same effects as those of the first embodiment. Further, the difference detection method of the second modification and at least one of the difference detection methods of the first embodiment and the first modification may be combined. In this case, the difference detection is performed using a plurality of conditions.

[0054] (Second Embodiment) FIG. 7 is a block diagram showing an example of the configuration of the system 100 according to the second embodiment. The second embodiment is different from the first embodiment in that the vehicle data is read by wireless communication.

[0055] The reading terminal 3 reads the vehicle data from the in-vehicle storage unit 12 of the vehicle data storage device 1 by wireless communication.

[0056] The system 100 further includes an in-vehicle wireless device 4 and a ground wireless device 5.

[0057] The in-vehicle wireless device 4 is provided in the vehicle. The in-vehicle wireless device 4 is connected to the vehicle data storage device 1 by a cable 6. The cable 6 is, for example, a LAN cable. The cable 6 is, for example, always connected. The in-vehicle wireless device 4 performs wireless communication with the ground wireless device 5 provided on the ground.

[0058] The ground wireless device 5 is provided on the ground. The ground wireless device 5 is provided, for example, at a station. The ground wireless device 5 performs wireless communication with the in-vehicle wireless device 4.

[0059] The on-vehicle upper-side wireless device 4 transmits vehicle data to the ground-side wireless device 5, for example, while the railway vehicle RV is stopped at a station or passing through a station. As a result, synchronization is periodically performed, eliminating the need to directly connect the reading terminal 3 to the vehicle data storage device 1 with a cable. Consequently, labor can be reduced.

[0060] As in the second embodiment, vehicle data may be read out by wireless communication. The system 100 according to the second embodiment can obtain the same effects as the first embodiment.

[0061] (Third Embodiment) FIG. 8 is a block diagram showing an example of the configuration of the system 100 according to the third embodiment. The third embodiment is different from the first embodiment in that an analysis device 8 is provided.

[0062] The system 100 further includes a communication device 7 and an analysis device 8.

[0063] The communication device 7 communicates between the reading terminal 3 and the analysis device 8. The communication device 7 transmits the vehicle data read by the reading terminal 3 to the analysis device 8 while maintaining the file format of the vehicle data. The reading terminal 3 and the communication device 7 are connected by, for example, a cable 2. The communication device 7 and the analysis device 8 are connected by, for example, a cable 2.

[0064] The analysis device 8 performs analysis using the vehicle data. The analysis device 8 is provided, for example, in an analysis room. In the example shown in FIG. 8, the analysis room is inside the inspection warehouse, but it may also be outside the inspection warehouse. In this case, the communication between the communication device 7 and the analysis device 8 may be wireless. The analysis device 8 is, for example, a PC. The analysis device 8 has higher performance than the reading terminal 3 and can perform relatively advanced analysis.

[0065] The analysis device 8 has an analysis unit 81 and an information generation unit 82.

[0066] The analysis unit 81 performs analysis based on the vehicle data read from the on-vehicle memory unit 12.

[0067] The information generation unit 82 generates control information for controlling the ground memory control unit 31 according to the vehicle data to be analyzed by the analysis unit 81. The type of vehicle data to be analyzed is set or input by the user via the analysis device 8, for example. The control information is information for controlling the ground memory control unit 31 so as to limit the vehicle data read from the on-vehicle memory unit 12 to the vehicle data to be analyzed by the analysis unit 81, or so as to preferentially read the vehicle data to be analyzed by the analysis unit 81 from the on-vehicle memory unit 12. When the amount of vehicle data is huge, it takes a long time to read all the vehicle data. Since the control information enables the acquisition of the vehicle data necessary for analysis in a shorter time, the analysis can be executed in a shorter time.

[0068] Note that the analysis unit 81 and the information generation unit 82 may be realized by one CPU, or may be realized by individual CPUs respectively.

[0069] As in the third embodiment, the analysis device 8 may be provided. The system 100 according to the third embodiment can obtain the same effects as the first embodiment. Further, the system 100 according to the third embodiment may be combined with the second embodiment. That is, wireless communication may be used for reading vehicle data. Here, when the time for the railway vehicle RV to stop at the station is short, the railway vehicle RV may leave the station before the reading of the vehicle data is completed. Therefore, by using the control information, it is possible to make it easier to acquire the vehicle data necessary for analysis.

[0070] At least a part of the data processing method in the data processing apparatus 30 according to the present embodiment may be configured by hardware or software. When configured by software, a program that realizes at least a part of the functions of the data processing method may be stored in a recording medium such as a flexible disk or a CD-ROM, and read and executed by a computer. The recording medium is not limited to removable ones such as magnetic disks and optical disks, and may be a fixed-type recording medium such as a hard disk device or a memory. Further, a program that realizes at least a part of the functions of the data processing method may be distributed via a communication line (including wireless communication) such as the Internet. Furthermore, the program may be distributed in an encrypted, modulated, or compressed state via a wired or wireless line such as the Internet, or stored in a recording medium and distributed.

[0071] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope.

Description of Reference Numerals

[0072] 100 System, 1 Vehicle data storage device, 11 On-vehicle storage control unit, 12 On-vehicle storage unit, 2 Cable, 3 Reading terminal, 31 Ground storage control unit, 32 Ground storage unit, 33 Difference detection unit, 4 On-vehicle side wireless device, 5 Ground side wireless device, 6 Cable, 7 Communication device, 8 Analysis device, 81 Analysis unit, 82 Information generation unit, RV Railway vehicle

Claims

1. A data reading device for a railway vehicle that reads data stored in a first storage unit provided in the railway vehicle and stores it in a second storage unit provided on the ground side, a difference detection unit that detects a difference between the data stored in the first storage unit and the data stored in the second storage unit, a first storage control unit that stores the data stored in the first storage unit in the second storage unit in order from the latest update date and time corresponding to the difference detected by the difference detection unit, A data reading device for a railway vehicle, comprising:

2. The data reading device for a railway vehicle according to claim 1, wherein the difference detection unit detects the difference based on the file name of the data.

3. The first storage control unit stores the data stored in the first storage unit in the second storage unit in order from the latest update date and time, the difference detection unit detects the difference by the first storage control unit replacing and storing data with the same file name, The data reading device for a railway vehicle according to claim 2, wherein the first storage control unit stops storing data at the timing when the difference detection unit detects the difference.

4. The data reading device for a railway vehicle according to claim 1, wherein the difference detection unit detects the difference based on the storage date and time of the data included in the file name of the data.

5. The data reading device for a railway vehicle according to claim 4, wherein the difference detection unit detects the difference based on the latest storage date and time of the data stored in the second storage unit and the storage date and time of the data stored in the first storage unit.

6. The data reading device for a railway vehicle according to claim 4 or claim 5, wherein the first storage control unit does not store the data with the latest storage date and time stored in the first storage unit in the second storage unit.

7. The data reading device for a railway vehicle according to claim 1, wherein the difference detection unit detects the difference based on the folder name of the folder in which the data is stored.

8. The data reading device for a railway vehicle according to claim 7, wherein the difference detection unit detects the difference by comparing folder names changed based on at least the update date and time and the file size between the first storage unit and the second storage unit.

9. A first storage unit provided in a railway vehicle, a second storage unit provided on the ground side, a data reading device for a railway vehicle that reads data stored in the first storage unit and stores it in the second storage unit, Comprising: The data reading device for a railway vehicle is A difference detection unit that detects the difference between the data stored in the first storage unit and the data stored in the second storage unit; A first storage control unit that stores the data stored in the first storage unit corresponding to the difference detected by the difference detection unit in the second storage unit; A system having the above.

10. The system according to claim 9, further comprising a second storage control unit that is provided in the railway vehicle, stores data in the first storage unit so that the difference detection unit can detect the difference, and outputs the data stored in the first storage unit corresponding to the difference detected by the difference detection unit to the first storage control unit.

11. An analysis unit that performs analysis based on the data read from the first storage unit; An information generation unit that generates control information for controlling the first storage control unit according to the data to be analyzed by the analysis unit; The system according to claim 9, further comprising the above.

12. The system according to claim 11, wherein the control information is information for controlling the first storage control unit so as to limit the data read from the first storage unit to the data to be analyzed by the analysis unit, or so as to preferentially read the data to be analyzed by the analysis unit from the first storage unit.

13. The system according to claim 9, wherein the railway vehicle data reading device does not store the data stored in the second storage unit in the first storage unit.

14. The system according to any one of claims 9 to 13, wherein the railway vehicle data reading device reads data from the first storage unit via a cable.

15. The system according to any one of claims 9 to 13, wherein the railway vehicle data reading device reads data from the first storage unit by wireless communication.

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