JP2009173251A - Vehicle monitoring system and vehicle monitoring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a vehicle monitoring system capable of surely storing imaging data of at least past one time for every formation even without making back-up data of the imaging data. <P>SOLUTION: When the vehicle monitoring system 50A is constructed for monitoring on-roof equipment of a train 70, the vehicle monitoring system includes an imaging part 10, a formation number acquiring part 20A, a storage part giving a data name different with a train unit to the imaging data and memorizing them, and a data management part creating the information indicating corresponding relationship between the respective imaging data names and the formation numbers when the imaging data are memorized in the storage part, wherein the data management part is added with a function of searching for other formations taken in the oldest one of the imaging data when it is determined that the same formation is used in the trains of a predetermined number or more and the imaging data of the respective trains are memorized in the storage part and of deleting the oldest imaging data only when the imaging data on the trains, in which the other formations are used, exist a predetermined number or more for every formation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle monitoring system and a vehicle monitoring method for monitoring equipment on a roof of a train.

  Equipment such as pantographs, outdoor equipment for air conditioning equipment, train radio antennas, etc. are installed on the roof of the train. When these equipment are inspected by climbing on the roof, there is a risk of electric shock or falling. Is accompanied. For this reason, development of a vehicle monitoring system configured to take an image of a train roof device with an unmanned device and observe the image on the ground has been underway.

  For example, Non-Patent Document 1 describes a vehicle rooftop monitoring device that manages imaging data by train organization number and imaging date and time. Patent Document 1 describes a roof vehicle equipment monitoring and measuring device for managing imaging data based on vehicle composition numbers and shooting dates and times. If such an apparatus is used, an inspector will only have to climb the roof for inspection when an abnormality is observed by observing an image taken with an unmanned device. It becomes easy to suppress.

"Mitsubishi Pantograph Sliding Plate Measuring Device / Vehicle Roof Monitoring Device" Mitsubishi Electric Corporation October 1997 JP 2005-337714 A

  In the vehicle rooftop monitoring apparatus described in Non-Patent Document 1, even when the imaging target train is a train of a plurality of trains, the imaging data is managed by the train number of the train representing the train, and the train is represented. The organization number of the organization that has not been used is not used as information when managing imaging data. As long as the backup data is not taken, the train data that represents a train that was composed of multiple trains but was not representative of the train is not the other train. Is deleted when the image is picked up again. For this reason, for a train that does not represent a train, for example, when it is desired to reconfirm the state of the equipment on the roof, there is a case where there is no imaging data and the inspector has to climb the roof to inspect.

  Of course, if you take backup data for each imaging data, you can view the playback image when you want, but each imaging data has a relatively large data size, and the number of imaging data to take backup data is compared Therefore, a relatively large amount of equipment costs are required to obtain backup data. On the other hand, Patent Document 1 does not disclose a specific method for managing imaging data.

  The present invention has been made in view of the above circumstances, and is capable of reliably storing at least one past imaging data for each train without taking backup data of imaging data. The object is to obtain a vehicle monitoring method.

  The vehicle monitoring system of the present invention that achieves the above object includes an imaging unit that images one or more trains entering a warehousing line, and an imaging unit that captures an image on the roof of a train. A train number acquisition unit that acquires one or a plurality of train numbers for each train for each train unit, a storage unit that stores and stores captured image data with different image data names for each train, and stores image data in the storage unit When creating the information representing the correspondence between each imaging data name and the acquired organization number, and based on the information representing the created correspondence, more than a predetermined number of imaging data of the train of the same organization number from the storage unit A data management unit that selects imaging data including all imaging data of a train having an existing train number, and deletes the oldest imaging data of the selected imaging data from the storage unit; It is intended.

  In the vehicle monitoring system according to the present invention, when deleting the imaging data of a train, the imaging data showing the organization is managed to remain without fail for each organization constituting the train. Therefore, according to the present invention, it is possible to reliably save at least one past imaging data for each composition without taking backup data of imaging data.

  Hereinafter, embodiments of the vehicle monitoring system and the vehicle monitoring method of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing an example of a vehicle monitoring system of the present invention. The vehicle monitoring system 50A shown in the figure includes an imaging unit 10, a composition number acquisition unit 20A, and a management device unit 40, and includes a train 70 that has entered a warehousing track (entrance track) 75 in one or more trains. The rooftop equipment, for example, a pantograph 65, an air conditioner (not shown), a train radio antenna (not shown), and the like are imaged and the rooftop equipment is monitored according to the vehicle monitoring method of the present invention. At this time, the traveling speed of the train 70 is maintained at a constant speed, for example.

  Said imaging part 10 is arrange | positioned above the warehousing track 75, and images the apparatus on the roof of the train 70, three imaging devices 1a-1c, two illumination lamps 3a and 3b, and a roof And a sensor 5 for detecting the upper device. Two of the three imaging devices 1a to 1c are arranged opposite to each other, pick up the moving image from the front and back of the rooftop equipment, and the remaining one 1c is when the sensor 5 detects the rooftop equipment It operates to capture still images of rooftop equipment. Each of the imaging devices 1a and 1b can be configured to capture a moving image and to capture a still image of the rooftop device by operating when the sensor 5 detects the rooftop device. The two illumination lamps 3a and 3b are turned on as necessary to set the imaging ranges of the imaging devices 1a to 1c to a desired illuminance. The imaging operations of the imaging devices 1a to 1c and the illumination lamps 3a and 3b are controlled by a control device 17A described later. In addition, the imaging direction of each of the imaging devices 1a to 1c is also controlled by the control device 17A.

  The knitting number acquisition unit 20 </ b> A acquires one or a plurality of knitting numbers in knitting units according to the knitting of the train 70 when the imaging unit 10 images the rooftop equipment of the train 70. In addition, each of the imaging unit 10 and the management device unit 40 is controlled. For this purpose, the composition number acquisition unit 20A has two wheel sensors 13a and 13b, an ID antenna 15, and a control device 17A.

  Each of the wheel sensors 13a and 13b includes, for example, a high-frequency induction sensor, and is disposed on the warehousing line 75 with a space between each other to detect the wheel of the train 70 and collect information on the traveling direction of the train 70. Information about the traveling direction collected by the wheel sensors 13a and 13b is transmitted to the control device 17A. The ID antenna 15 is disposed in the vicinity of the warehousing line 75 and receives a composition number for each composition in the train 70 transmitted from the ID tag 67 of the train 70. The ID tag 67 is mounted for each composition, and the composition number received by the ID antenna 15 from each ID tag 67 is transmitted to the control device 17A.

  The control device 17A controls the operations of the imaging unit 10 and the management device unit 40 based on information from the wheel sensors 13a and 13b and information from the ID antenna 15. For example, the traveling direction of the train 70 is determined according to which of the two wheel sensors 13a and 13b detects the wheel first, and when it is determined that the train enters the garage, each imaging is performed after a predetermined time has elapsed. The devices 1a to 1c are caused to start an imaging operation and the lighting lamps 3a and 3b are turned on as necessary. In addition, the composition number sent from the ID antenna 15 is transmitted to the management device unit 40, and the management of the imaging data is started. For example, when the train 70 is a combination of two trains, the train numbers of the trains are sequentially transmitted from the ID antenna 15 to the control device 17A. Start managing.

  Furthermore, when each wheel sensor 13a, 13b detects a wheel after detecting a wheel for more than a predetermined time, or when a predetermined time has elapsed since the detection of the wheel by one of the two wheel sensors 13a, 13b, the train 70 Is completed, the imaging operation of each of the imaging devices 1a to 1c is terminated, and when the illumination lights 3a and 3b are turned on, the illumination lights 3a and 3b are turned off. In addition, a signal indicating that imaging has been completed is sent to the management apparatus unit 40.

  The management device unit 40 includes three data management devices 40A to 40C. The data management device 40A manages imaging data (moving image) from the imaging device 1a, the data management device 40B manages imaging data (moving image) from the imaging device 1b, and the data management device 40C captures imaging data (from the imaging devices 1a to 1c). Manage still images).

  Each data management device 40A to 40C includes a device main body 30 and a display unit 35, and each device main body 30 includes a data management unit and a storage unit (not shown). The data management unit in each of the data management devices 40A to 40C attaches and stores in the storage unit different imaging data names for each train to the imaging data of the train imaged by the imaging unit 10 (imaging devices 1a, 1b, or 1c). And manage each organization.

  When the data management unit stores the train imaging data in the storage unit, information indicating the correspondence between the train number acquired by the train number acquisition unit 20A from the train to be imaged and the image data name of the train (hereinafter, the train data) Simply referred to as “correspondence”), and imaging data is managed based on this correspondence. When deleting the imaging data stored in the storage unit, based on the above correspondence, select imaging data that includes all imaging data of trains with a train number having a predetermined number or more of trains with the same train number. The oldest imaging data in the selected imaging data is deleted.

  In other words, based on the above correspondence, when it is determined that the same train is used in a predetermined number of trains and the imaging data of each train is stored in the storage unit, among these imaging data The other trains reflected in the oldest imaging data are searched based on the above correspondence, and the imaging data of the train in which the other trains (all trains when there are multiple trains) are used are a predetermined number or more for each train. The oldest imaging data is deleted only when stored in the storage unit.

  In the illustrated vehicle monitoring system 50A, each of the imaging unit 10, the composition number acquisition unit 20A, and the management device unit 40 is connected to the outdoor panel 45. The imaging unit 10, the composition number acquisition unit 20 </ b> A, and the management device unit 40 are connected to each other via an outdoor panel 45. In the composition number acquisition unit 20A, the detection results of the wheel sensors 13a and 13b and the reception result of the ID antenna 15 are transmitted to the control device 17A via the outdoor panel 45.

  In the vehicle monitoring system 50 </ b> A configured as described above, each data management device 40 </ b> A to 40 </ b> C manages each of the imaging data obtained by the imaging unit 10 for each composition. For example, when the train 70 is a train with two trains 70A and 70B as shown in FIG. 2, the imaging data of the on-roof equipment such as the pantograph 65 by the imaging devices 1a to 1c is managed for each of the trains 70a and 70B. Hereinafter, referring to FIGS. 3 to 6 while appropriately quoting the reference numerals used in FIG. 1, a method for managing imaging data in each of the data management devices 40A to 40C will be described in detail.

  3 is a block diagram schematically showing an example of the data management device in the vehicle monitoring system shown in FIG. 1, and schematically shows an example of the data management device 40A shown in FIG. The illustrated data management apparatus 40A includes an apparatus main body 30, an input unit 33, and a display unit 35, and manages imaging data from the imaging apparatus 1a shown in FIG. For this purpose, the apparatus main body 30 includes an interface unit (I / F unit) 21 that receives imaging data from the imaging device 1a via the outdoor panel 45 (see FIG. 1), and each operation related to management of the imaging data and image reproduction. A data management unit 23 for controlling the image data, and a storage unit 25 for storing and storing imaging data.

  The data management unit 23 has a role of managing each piece of imaging data obtained by the imaging device 1a for each composition, and a management data creation unit 23a that performs processing when the imaging data is stored in the storage unit 25. And an imaging data deletion unit 23b that performs processing when deleting the imaging data stored in the storage unit 25, and an image reproduction processing unit 23c that performs processing during image reproduction.

  When storing the imaging data in the storage unit 25, the management data creation unit 23 a attaches a predetermined imaging data name to the imaging data based on information input from the input unit 33 by the user. As the base name in the imaging data name at this time, for example, the storage date / time or the imaging date / time of the imaging data can be used. The base name means, for example, “200711141125” excluding the extension with the file name “200711141125.AVI”. When the train to be imaged is a train of multiple trains, the combined position information is created based on the timing when the train number for the train is sent from the train number acquisition unit 20A (see FIG. 1). The combined position information is given to the frame data obtained by imaging the vicinity of the connection position between the trains on the train.

  Further, the management data creation unit 23a creates the above-described correspondence based on the train number acquired by the train number acquisition unit 20A from the train to be imaged and the imaging data name of the train, and stores it in the storage unit 25. . Further, a management folder corresponding to the organization number is created for each organization number, and a management file is created in each management folder and stored in the storage unit 25. Each management file is given a name having the same base name as the corresponding imaging data name and a different extension. As a result, one management file with the same name is created for each of the plurality of management folders for the imaging data of a plurality of trains. Each management file is an empty file, and no data is stored in the management file.

  When a management folder in which the number of management files exceeds a predetermined condition value is generated by storing new imaging data in the storage unit 25, the management data creation unit 23a has the oldest management folder in which the number of management files exceeds the condition value. Delete the management file. The condition value at this time can be a desired number of 1 or more.

  The imaging data deletion unit 23b includes the imaging data name of each imaging data stored in the storage unit 25 and the base name of each management file created by the management data creation unit 23a and stored in each of the plurality of management folders. If the management file having the same base name does not exist in the plurality of management folders, the imaging data having the same base name as the management file that does not exist is deleted. That is, when the management data creation unit 23a deletes the management file as described above and no management file having the same base name as the imaging data is found in any management folder, the imaging data is deleted.

  The image reproduction processing unit 23 c reads predetermined imaging data from the storage unit 25 in response to a command input from the input unit 33 by the user, and causes the display unit 35 to display a reproduction image corresponding to the imaging data.

  On the other hand, the input unit 33 in the data management device 40A functions as an input device for a user to input a command or the like to the device main body 30, and the operation of the display unit 35 is controlled by the image reproduction processing unit 23c. A reproduced image is displayed based on the recorded imaging data.

When the vehicle monitoring system 50A (see FIG. 1) including the data management device 40A having such a configuration is provided on a route that operates a train using, for example, a total of N types of trains, the management data of the data management device 40A The creation unit 23a creates a total of N management folders. Moreover, when storing the imaging data of a plurality of trains in the storage unit 25, one management file is created for each train. In the example illustrated in FIG. 3, n pieces of imaging data DF _{1 to} DF _n are stored in the storage unit 25, and a total of four management folders MFa to MFd are created for each organization.

  The management folder MFa is used to manage the imaging data of each train using the organization “A organization”, the management folder MFb is used to manage the imaging data of each train using the organization “B organization”, and the management folder MFc is The management data MFd is used for managing the imaging data of each train using the organization “C organization”, and the management folder MFd is used for managing the imaging data of each train using the organization “D organization”. The management file is not shown.

FIG. 4 is a schematic diagram illustrating an example of a management screen for each of the imaging data and the management file by the above-described data management apparatus. This figure shows an example of a management screen displayed on the display unit 35 (see FIG. 3) of the data management device. The upper figure shows a management screen MS _{1 for} imaging data, and the lower figure shows a management file management screen. MS ₂ .

  In the illustrated example, imaging data for a total of five trains is managed. In each imaging data, the imaging date and time of the train is used as a base name, and the train organization content is added as attribute information AI to each imaging data. Correspondence between the train image data name and the train number of the train and thus the train is created.

  In addition, a total of four management folders, A organization folder MFa, B organization folder MFb, C organization folder MFc, and D organization folder MFd, are created, and a predetermined number of management files Mf are created in each of the administration folders MFa to MFd. . The management file Mf is created for each train in each of the above five trains, and when a plurality of management files Mf correspond to one imaging data, the base name in the imaging data is assigned to these management files Mf. The same base name BN as BN is given. However, the extension of the imaging data and the extension of the management file are different from each other. In FIG. 4, in order to make it easy to understand the oldest imaging data and the management file corresponding to the imaging data, these are connected by a dashed-dotted arrow. Similarly, the second oldest imaged data and the management file corresponding to the imaged data are connected by a one-dot chain line arrow.

  The number of management files Mf that can be accommodated in each of the management folders MFa to MFd is limited to a maximum of three. When the next management file Mf is created in the management folder MFa or the management folder MFb in which three management files Mf have already been created, the oldest management file Mf in the management folder MFa or the management folder MFb is managed. It is deleted by the data creation unit 23a (see FIG. 3). When the management data creation unit 23a deletes the management file Mf as described above and the management file Mf having the same base name BN as the imaging data does not exist in any of the management folders MFa to MFd, the imaging data is captured. It is deleted by the data deletion unit 23b.

When reproducing imaging data, a user first inputs a predetermined command from the input unit 33 (see FIG. 3). Thereby, for example, a data search screen RS as shown in FIG. 5 is displayed on the display unit 35 (see FIG. 3). This data search screen RS has a train entry date / time input field EB ₁ and a train number input field EB ₂ , and the user can instruct the retrieval of imaging data from either the train entry date / time and the train number. .

  When a search is instructed and desired image data is specified after the search result is displayed on the display unit 35, the image reproduction processing unit 23c (see FIG. 3) accesses the storage unit 25 (see FIG. 3) to obtain the image data. read. When the display is instructed, a replay image is displayed on the display unit 35. Therefore, the user can perform an inspection operation for confirming whether there is an abnormality in the train roof equipment using the replay image. When reproducing the imaging data of trains of a plurality of trains, it is also possible to designate the playback start position of the image using the above-mentioned combined position information given to the frame data obtained by capturing the vicinity of the connection position between the trains.

  FIG. 6 is a flowchart schematically showing an example of a procedure for managing imaging data in the data management apparatus. This figure schematically shows a procedure for managing imaging data from when the above-described data management device 40A (see FIG. 3) acquires imaging data of a new train until image reproduction is performed. In the example, the data management device 40A manages the imaging data by performing a predetermined step of steps S1 to S11.

  In step S1 performed first, the data management device 40A acquires imaging data from the imaging device 1a (see FIG. 1). Next, in step S2 performed, the data management device 40A acquires a knitting number in a knitting unit in a train from the knitting number acquisition unit 20A (see FIG. 1). The management data creation unit 23a (see FIG. 3) of the data management apparatus 40A that has acquired these saves the imaging data in the storage unit 25 (see FIG. 3) in step S3, and creates the above-described correspondence and stores the storage unit. 25.

  In subsequent step S4, the management device unit 23a determines for each management folder whether or not the number of management files in the management folder corresponding to the composition number acquired in step S2 exceeds the upper limit value. If there is a management folder in which the number of management files is determined to exceed the upper limit value in step S4, the process proceeds to step S5, and the oldest management file in the management folder is deleted, and then the process proceeds to step S6. When it is determined that it does not exceed, the process proceeds to step S6 as it is.

  In step S6, the imaging data deletion unit 23b (see FIG. 3) determines whether or not there is a management file having the same base name as the base name of the imaging data for each of the imaging data stored in the storage unit 25. If there is imaging data in which no corresponding management file exists in any management folder, the process proceeds to step S7, and the imaging data deletion unit 23b deletes the imaging data, and then the process proceeds to step S8. On the other hand, when it is determined that there is a management file having the same base name as the base name of the imaging data for each of the imaging data, the process directly proceeds to step S8.

  In step S8, the management data creation unit 23a creates a management file for each train train for which imaging data is stored in the storage unit 25 in step S3. If the management folder has not yet been created, the management data creation unit 23a creates a predetermined management folder, and then stores the management file in the management folder.

  In step S9 performed thereafter, the image reproduction processing unit 23c (see FIG. 3) determines whether or not a command for instructing image reproduction is input from the input unit 33 (see FIG. 3), and the above command is input. If it is determined that the image has been reproduced, the process proceeds to step S10 to reproduce the image, and then proceeds to step S11. If it is determined in step S9 that the above command has not been input, the process proceeds directly to step S11. In step S11, the image reproduction processing unit 23c determines whether or not a command for instructing termination has been input from the input unit 33. When it is determined that the command has been input, the operation is terminated. On the other hand, when it is determined that a command for instructing termination has not been input, the process returns to step S9 to repeat the steps after step S9.

  As described above, in the data management device 40A that manages the imaging data, when deleting the imaging data of the train, there always remain three imaging data showing the organization for each organization constituting the train. . Even without taking back-up data of the imaging data, imaging data for the past three times can be reliably stored for each organization. Therefore, if there is one image data for a train of multiple trains, the image data is reliably stored for a period sufficient to accept the rooftop equipment in each train used in the train. I can keep it.

  Note that the data management device 40B illustrated in FIG. 1 manages imaging data obtained by the imaging device 1b in the same manner as in the data management device 40A described above. In addition, the data management device 40C illustrated in FIG. 1 manages still image data by the imaging devices 1a to 1c. The management of imaging data in the data management device 40C includes a plurality of imaging data for each train. The data management can be performed in the same manner as the data management in the data management apparatus 40A described above except that the still image data is included. In managing the imaging data for each train by the data management device 40C, in order to make it easy to understand the shooting order of still images in each imaging data, a serial number is given and a number that can be used to identify the imaging device is given. It is preferable to attach a name to each still image data.

Embodiment 2. FIG.
In the vehicle monitoring system of this invention, the organization number in each train can be acquired from the train operation management system. In this case, for example, the control device of the train number acquisition unit is connected to the train operation management system. In addition, the control device of the knitting number acquisition unit is added with a function of counting the wheels that have passed through the wheel sensor based on the detection signal of the wheel sensor and determining whether the knitting has passed. An ID tag that is mounted on a train and transmits the train number of the train, and an ID antenna that receives a signal from the ID tag can be omitted.

  FIG. 7 is a schematic diagram illustrating an example of a vehicle monitoring system in which a composition number acquisition unit is connected to a train operation management system. The vehicle monitoring system 50B shown in the figure has the same configuration as the vehicle monitoring system 50A except that a knitting number acquisition unit 20B is provided instead of the knitting number acquisition unit 20A in the vehicle monitoring system 50A shown in FIG. have. Among the constituent elements shown in FIG. 7, those common to the constituent elements shown in FIG. 1 are given the same reference numerals as those used in FIG. 1, and description thereof is omitted.

  The train number acquisition unit 20B is connected to the train operation management system and the two wheel sensors 13a and 13b that are arranged on the warehousing line 75 and collects information on the traveling direction of the train 70. And a control device 17B that acquires a train number in the train 70 in a train unit. The control device 17B is provided with a storage unit (not shown) in which information relating to the number of wheels for each vehicle and the number of vehicles for each train is stored in advance, and from at least one of the wheel sensors 13a and 13b. A function is added to determine whether or not the knitting has passed by counting the wheels that have passed through the wheel sensor based on the detection signal. For example, in a composition in which four vehicles having four pairs of wheels are connected, the composition has the wheel sensor 13a or the wheel sensor 13b before the number of wheels that have passed the wheel sensor 13a or the wheel sensor 13b reaches 16 and becomes 17. The control device 17B determines that it has passed.

  The control device 17B controls the operation of the imaging unit 10 in the same manner as in the control device 17A described in the first embodiment. When the train number acquired from the train operation management system in units of trains is transmitted to the management unit 40, and when the train 70 is a train of multiple trains, it is determined that each train has passed the wheel sensors 13a and 13b. Timing information is generated and transmitted to the management device unit 40.

  Each of the data management devices 40A to 40C constituting the management device unit 40 has predetermined combined position information in frame data obtained by imaging the vicinity of the combined position of knitting and knitting based on the timing information transmitted from the control device 17B. The image data is managed in the same manner as in the management device unit 40 described in the first embodiment, except that.

  In the vehicle monitoring system 50B configured as described above, as in the vehicle monitoring system described in the first embodiment, when deleting the imaging data of the train, the trains constituting the train are There are always three pieces of imaging data showing the organization. Even without taking back-up data of the imaging data, imaging data for the past three times can be reliably stored for each organization. Therefore, if there is one image data for a train of multiple trains, the image data must be securely stored for a period sufficient to accept the roof equipment in the train used in the train. I can leave.

Embodiment 3 FIG.
In the vehicle monitoring system of the present invention, each data management device can also be configured to manage imaging data using a single management file. In this case, the function given to each data management device is slightly different from the functions described in the first and second embodiments, but the overall system configuration is, for example, the configuration shown in FIG. 1 or FIG. Therefore, the illustration thereof is omitted here.

  When managing imaging data using one management file, the correspondence between imaging data names and train numbers in the train is described in the management file for each train. In addition, the number of imaging data to be stored for each composition, for example, 3 is preset as a condition value.

FIG. 8 is a schematic diagram illustrating an example of a data management screen in a vehicle monitoring system in which each data management apparatus manages all imaging data with one management file. As is clear from the data management screen MS ₃ shown in the figure, in the example shown in the figure, the correspondence between the trained image data name and the train number of the train is described for each of the six trains. Specifically, the train imaging data name DN and the name N assigned to each train number, “A train”, “B train”, “C train”, or “D train” are used in the train. It is described in association with the knitting that has been performed.

  When the data management apparatus stores new imaging data in the storage unit, first, the number of each organization number described in the management file, specifically, the number of each name N is counted, and the count value is predetermined. A knitting number (name N) exceeding the condition value is selected. Next, the oldest imaging data name is extracted from the imaging data names associated with all the selected organization numbers (names N), and the correspondence between the extracted imaging data names and organization numbers (names N) is determined. The description shown is deleted from the management file, and the imaging data corresponding to the extracted imaging data name is deleted. Thereafter, the new imaging data is stored in the storage unit.

  In other words, it is determined for each organization number (name N) whether or not the name N associated with the imaging data name has been used a total of four or more times in the management file, and all the associated numbers are identified. When there is an imaging data name whose organization number (name N) is used a total of 4 times or more in the entire imaging data, a description showing the correspondence between the oldest imaging data name and the organization number (name N) among them In addition to deleting from the management file, the imaging data corresponding to the oldest imaging data name is deleted, and then new imaging data is stored in the storage unit. Imaging data of trains that include trains whose number of imaging is three or less is not deleted regardless of whether it is new or old.

  For example, in the example shown in FIG. 8, “A formation” is used for a total of four trains and there are four times of imaging data, but “B formation” is used for a total of three trains for three trains. Since there is only imaging data, the imaging data of the train composed of “A formation” and “B organization” received at 09:05 on November 15, 2007 is the oldest imaging data but has not yet been deleted. If imaging data for a train including “B organization” is obtained at the time of the next imaging data acquisition, imaging data for four times or more is obtained for both “A organization” and “B organization”. Therefore, the imaging data of the train that was received at 09:05 on November 15, 2007 is deleted.

  In a vehicle monitoring system configured using such a data management device, when image data of a train is deleted, there are always four pieces of image data showing the train for each train constituting the train. . Even if backup data of imaging data is not taken, imaging data for the past four times or three times can be surely stored for each organization. Therefore, if there is one image data for a train of multiple trains, the image data must be securely stored for a period sufficient to accept the roof equipment in the train used in the train. I can leave.

Embodiment 4 FIG.
In the vehicle monitoring system according to the present invention, when the train has a plurality of trains, the image data for the train is divided into trains to form a plurality of image data files, and the image data files for each train are managed. You can also. In this case, the function given to each data management device is slightly different from the functions described in the first and second embodiments, but the overall system configuration is, for example, the configuration shown in FIG. 1 or FIG. Therefore, the illustration thereof is omitted here.

  For example, in the vehicle monitoring system including the composition number acquisition unit 20A (see FIG. 1) described in the first embodiment or the composition number acquisition unit 20B (see FIG. 1) described in the second embodiment, the combined position information is created. At this time, a function of dividing the imaging data is added to the management data creation unit 23a of each of the data management devices 40A to 40C.

  In the vehicle monitoring system provided with the composition number acquisition unit 20A described in the first embodiment, the composition number acquisition unit 20A is configured to send a predetermined signal to each of the data management devices 40A to 40C when the composition number is acquired. The data management devices 40A to 40C can also be configured to divide the imaging data at a timing when a predetermined time has elapsed from the reception time of the signal. Of course, the first signal among the signals transmitted from the composition number acquisition unit 20A to each of the data management devices 40A to 40C does not need to be used as a trigger for dividing the imaging data.

  Each imaging data file obtained by dividing the imaging data is managed by the data management device with a name including identification information for identifying a train and identification information for each train, for example. At this time, as in the vehicle monitoring system described in the first embodiment, it is possible to create a management folder for each organization and manage individual imaging data files, as in the vehicle monitoring system described in the second embodiment. It is also possible to manage the imaging data files of each organization with one management file. Furthermore, without providing a management folder or a management file, a desired upper limit is set for each number of imaging data files to be stored, and a new imaging data file is saved, so that the number of imaging data files exceeding the upper limit is reached. Each data management device can also be configured to automatically delete the oldest imaging data file when it is to be stored.

  Even in a vehicle monitoring system configured using such a data management device, when deleting a captured image data file of a train, there must be at least one imaged data in which the train is shown for each of the trains constituting the train. Remains. Even if backup data of imaging data is not taken, at least one past imaging data can be reliably stored for each composition. Therefore, the imaging data can be reliably stored for a period sufficient to inspect the rooftop equipment in the formation used in the train.

  The vehicle monitoring stem and the vehicle monitoring method of the present invention have been described with reference to the embodiments. However, as described above, the present invention is not limited to the above-described embodiments. For example, the imaging data to be surely saved for each composition may be at least the past one, and the number of past imaging data to be surely saved can be appropriately set. For example, each vehicle monitoring system described in the first and second embodiments is configured such that at least one management file is created in each management folder created for each composition. In addition, the condition value used when determining whether or not to delete the imaging data in the vehicle monitoring system described in the third embodiment is set to at least 1.

  Each vehicle monitoring system described in the first to fourth embodiments has a plurality of data management devices. In the vehicle monitoring system and the vehicle monitoring method of the present invention, the image data of each train is used as one data management device. Can also be centrally managed. In this case, the number of imaging devices in the vehicle monitoring system can be a desired number of 1 or more, and a monitoring device that stores and reproduces imaging data by the imaging device is provided for each imaging device, for example. A single data management device is provided that centrally manages imaging data stored in the monitoring device by wired connection or wireless connection to the monitoring device. The monitoring device and the data management device constitute a management device unit. At this time, a data management device can be provided separately from the monitoring device. When a plurality of monitoring devices are provided, a function as a data management device may be added to one of them. If the image data of each train is centrally managed by one data management device, it becomes easy to efficiently manage the image data of each train.

  The method by which the composition number acquisition unit acquires the composition number is not limited to the method described in the first and second embodiments, and can be selected as appropriate. For example, on a route where a train operation management system is not installed, the train number acquisition unit control unit is wired or wirelessly connected to a host computer having a storage unit that stores train operation information, and the train number is obtained from the host computer. It can also be configured to.

  In the vehicle monitoring system described in the first and second embodiments, the combined position information is added to the frame data obtained by capturing the vicinity of the connection position between the formations, and the reproduction start position when the image is reproduced is used as the combined position information. However, whether or not to add the combined position information to the imaging data can be selected as appropriate. However, in order to obtain one imaging data for a train of a plurality of trains and to quickly start image reproduction of a desired train from the imaging data, it is preferable to add the combined position information as described above to the imaging data. Each of the vehicle monitoring system and the vehicle monitoring method of the present invention can be variously modified, modified, combined, etc. in addition to those described above.

  The vehicle monitoring system and the vehicle monitoring method according to the present invention are useful in performing inspection / acceptance work for equipment on the roof of a train.

It is the schematic which shows an example of the vehicle monitoring system of this invention. It is the schematic which shows an example of the train monitored by the vehicle monitoring system of this invention. It is a block diagram which shows roughly an example of the data management apparatus in the vehicle monitoring system shown in FIG. It is the schematic which shows an example of the management screen of each of the imaging data and management file by the data management apparatus shown in FIG. It is the schematic which shows an example of the data search screen by the data management apparatus shown in FIG. 4 is a flowchart schematically showing an example of a procedure for managing imaging data by the data management apparatus shown in FIG. 3. It is the schematic which shows an example in which the formation number acquisition part is connected to the train operation management system among the vehicle monitoring systems of this invention. It is the schematic which shows an example of the data management screen in the vehicle monitoring system of this invention which manages all the imaging data using one management file.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Imaging part 20A, 20B Composition number acquisition part 23a Management data creation part 25 Storage part 40 Management apparatus part 40A, 40B, 40C Data management apparatus 50A, 50B Vehicle monitoring system 70 Train 75 Track MFa, MFb, MFc, MFd Management folder Mf Management file

Claims (6)

An imaging unit that images one or more trains on a rooftop device of a train entering a warehousing track;
When performing imaging by the imaging unit, a knitting number acquisition unit that acquires one or a plurality of knitting numbers for each train for each train;
A storage unit for storing and storing the captured image data with different image data names for each train,
When storing the imaging data in the storage unit, information representing a correspondence relationship between each imaging data name and the acquired composition number is created, and the same information is stored from the storage unit based on the created correspondence information. Data management for selecting imaging data including all imaging data of trains with organization numbers for which there is a predetermined number or more of imaging data for trains with organization numbers, and deleting the oldest imaging data among the selected imaging data from the storage unit And
A vehicle monitoring system comprising: The data management unit
When creating a management folder for each organization number and storing the imaging data in the storage unit, the management folder corresponding to the acquired organization number has the same base name as the imaging data name, A management data creation unit that creates and saves management files with different extensions and deletes the oldest management file in the management folder when the number of management files exceeds the specified condition value in each management folder When,
The imaging data names of the respective imaging data stored in the storage unit are compared with the management file names stored in the plurality of management folders, and management files having the same base name exist in the plurality of management folders. If not, an imaging data deletion unit that deletes imaging data having the same base name as the management file that does not exist;
The vehicle monitoring system according to claim 1, further comprising:   When the data management unit stores the imaging data in the storage unit, the data management unit creates one management file in which information representing the correspondence between each imaging data name and the acquired organization number is described. Count the number of each organization number described in the management file, select the organization number whose count value exceeds a predetermined condition value, and select the most of all the selected imaging data names among the associated organization numbers. An old imaging data name is extracted, a description indicating the correspondence between the extracted imaging data name and the organization number is deleted from the management file, and imaging data corresponding to the extracted imaging data name is deleted from the storage unit The vehicle monitoring system according to claim 1. A wheel sensor for detecting the wheel of a train entering the warehousing line,
Further comprising
The data management unit creates combined position information indicating a combined position of the knitting in the imaging data based on the count value of the detection signal of the wheel sensor, and the imaging data obtained by imaging the combined position information Added to the storage unit, and when reproducing the imaging data to which the combined position information is added, the reproduction start position is specified using the combined position information.
The vehicle monitoring system according to any one of claims 1 to 3. An imaging unit that images one or more trains on a rooftop device of a train entering a warehousing track;
When performing imaging by the imaging unit, a knitting number acquisition unit that acquires one or a plurality of knitting numbers for each train for each train;
A wheel sensor for detecting the wheel of the train entering the warehousing line;
A storage unit for storing and storing the captured image data;
Based on the count value of the detection signal of the wheel sensor, create combined position information indicating the combined position of knitting and knitting in the imaging data, and divide the imaging data in knitting units based on the generated combined position information A data management unit that creates an imaging data file and stores it in the storage unit;
A vehicle monitoring system comprising: A vehicle monitoring method for monitoring equipment on a roof of a train,
An imaging step of imaging one or more trains on the train rooftop equipment entering the warehousing track;
When performing imaging by the imaging step, a knitting number acquisition step of acquiring one or a plurality of knitting numbers for each train for each train;
A storage step of storing and storing the captured imaged data with different imaged data names for each train,
When storing the imaging data, information indicating the correspondence between each imaging data name and the acquired composition number is created, and based on the information indicating the created correspondence, the data stored in the storage step To select the imaging data including all of the imaging data of the train of the train number having a predetermined number or more of the imaging data of the train of the same organization number, the oldest imaging data of the selected imaging data is stored and stored Data management steps to be removed from
A vehicle monitoring method comprising:

Images