JP2009222508A - Data inspection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set a recording medium to be random-accessible, such as, hard disk, and to enhance the efficiency of a maintenance management work by a recording system for recording an image and data simultaneously, and by the function and display system of an analyzer for detecting a specific spot at high speed from recorded data. <P>SOLUTION: This system has a sensor for detecting an image imaged by a TV camera and a symptom of a prescribed target spot; a sensor for detecting the position of the target spot; a recording means for digitizing output signals from the sensors and the output image signal from the TV camera, and unifying and recording them into a random-accessible recording medium, such as, hard disk; and an operation function and a display function for detecting a specific spot at a high speed from the recorded data and analyzing it. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to inspection of structures and the like using images and sensors, and more particularly to a data inspection system for maintenance of structures such as railroads, roads, bridges, and tunnels.

  As a conventional data inspection system, there is a cyclic inspection device and a cyclic inspection as disclosed in Patent Document 1. The prior art will be described with reference to FIG. FIG. 6 is a system diagram and a screen display example of a mounting unit in a vehicle in a conventional inspection system. FIG. 6A is a screen display example, and FIG. 6B is a system diagram. 42 is a rail, 41 is a vehicle on rail 42, 31 is a TV camera (TV camera) mounted on vehicle 41, 32 is a video / sway amount superimposing device mounted on vehicle 41, and 33 is mounted on vehicle 41. 30 is a screen displayed on the monitor 33, 34 is an acceleration sensor mounted on the vehicle 41, 35 is a distance detection device mounted on the vehicle 41, 36 is a vehicle top mounted on the vehicle 41, 37 is A ground element arranged at a predetermined distance along the rail 42, 38 is a speed generator, 39 is a VTR (Video Tape Recorder) mounted on the vehicle 41, and 40 is a VTR tape mounted on the VTR 39.

  As shown in FIG. 6 (b), a TV camera 31 installed on a vehicle 41 traveling on a rail 42 shoots the traveling direction from the front window of the vehicle 41, converts it to a video signal, and converts the image / sway. Output to quantity superimposing device 32. In addition, the acceleration sensor 34 acquires shaking data from the acceleration of the vehicle 41 and outputs the obtained shaking data to the video / sway amount superimposing device 32. The distance detection device 35 receives a signal from the vehicle upper element 36 that outputs a signal each time it passes over the ground element 37 indicating the position from the reference station, and also receives the output signal of the speed generator 38. The distance from the reference station (km) and the speed are calculated, and the calculated distance data and speed data are output to the video / sway amount superimposing device 32.

The video / sway amount superimposing device 32 includes the motion data of the vehicle 41 acquired by the acceleration sensor 34 and the distance (distance distance) data and speed detected by the distance distance detection device 35 in the image in front of the vehicle captured by the TV camera 31. The data is superimposed and output to the VTR 39 and the monitor 33 as a unified video. The VTR 39 records the input data on the VTR tape 40, and the monitor 33 converts the input data into the display format of the monitor 33 and displays it.
The video 30 recorded by this system has its position information and the data such as the fluctuation value and speed at that point integrated and superimposed on the video signal. The location can be identified and the surrounding situation can be confirmed.

Japanese Patent Laid-Open No. 08-005521

In the above prior art, video and data are recorded on a VTR tape. For this reason, it was necessary to regenerate the VTR tape once again in order to collect the data of the overrunning part in the work such as identifying the abnormal part. Also, in order to display the video of a specific location, it was necessary to perform operations such as VTR tape playback, fast forward, rewind, and frame advance, which required time.
The present invention provides a recording medium that can be accessed at random, such as a hard disk, and is maintained by a recording method for simultaneously recording video and data, and an analysis device capable of detecting a specific location from the recorded data at high speed and a display method. The purpose is to improve the efficiency of management work.

  In order to achieve the above object, the inspection system of the present invention includes an image captured by a TV camera, a sensor for detecting a symptom at a predetermined target location, a sensor for detecting the position of the target location, and outputs of the sensors. Recording means for digitizing signals and TV camera output video signals, recording them in a centrally accessible recording medium such as a hard disk, and operations for detecting and analyzing specific locations at high speed from the recorded data It has a function and a display function.

That is, the data inspection system of the present invention includes a television camera that captures an image of the field of view and outputs video data, a symptom detection sensor that detects a predetermined symptom at a target location while the moving body is moving, and the sensor that performs the predetermined inspection. A position sensor that detects the position of the target location where the symptom is detected and the sensor signal output from the symptom detection sensor and the position sensor are digitized as sensor data, and the sensor data is removed in synchronization with the video data. A portable inspection device that can be mounted on the movable body, and includes an adapter for mounting the removable recording medium and communicating with the analysis device, and the adapter. A data analysis unit for searching for a target location from the video data and the sensor data recorded on the mounted removable recording medium An analysis device having a those equipped with.
Preferably, in the analysis device of the data inspection system of the present invention, the analysis unit further includes a display unit and an input unit for an operator to operate the analysis device, and is operated by a GUI (Graphical User Interface). Thus, by displaying on the display unit, a specific portion is detected from the data recorded on the removable recording medium and analyzed.

  According to the present invention, the recording medium can be randomly accessed such as a hard disk, and the video data and other data can be recorded at the same time, and the analysis function for detecting a specific portion from the recorded data at high speed is provided. By displaying quickly, the efficiency of maintenance management work could be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings including the drawings explaining the conventional examples, the same reference numerals are assigned to the components having the common functions, and the description is omitted as much as possible.

An embodiment of the present invention will be described with reference to FIGS. 1 to 5 show an application of the present invention to a railway vibration inspection system.
First, FIG. 1 is a diagram for explaining an inspection system according to an embodiment of the present invention, and is a schematic diagram for explaining a vehicle movable on a track to be inspected and an inspection device mounted on the vehicle. FIG. 1 is a vehicle, 2 is a TV camera attached to the vehicle 1, 3 is a data recording device mounted on the vehicle 1, 4 is a distance input unit, and 42 is a rail.
FIG. 2 is a block diagram showing a configuration of an embodiment of the data recording apparatus 3 of FIG. 5 is a data processing unit, 6 is an operation unit, 7 is a color monitor, 8 is an acceleration sensor, 9 is a microphone, 10 is a power supply unit, 11 is a battery, 12 is a hard disk adapter, and 13 is a hard disk.

  The inspection device shown in FIG. 1 is a portable inspection device, which is a data recording device 3 housed in a portable case, a TV camera 2 as a photographing means, and a distance for inputting photographing position data. It is laid down with input unit 4. These components can be brought into any vehicle for measurement.

In FIGS. 1 and 2, the TV camera 2 is installed at a position where the rail 42 and its surroundings can be photographed, and photographs forward from a window (not shown). The video imaged by the TV camera 2 is converted into an electric signal and input to the data processing unit 5 of the data recording device 3 as video data. Further, the acceleration sensor 5 acquires shake data from the acceleration of the vehicle 1 and outputs the acquired shake data to the data processing unit 5. The distance input unit 4 calculates the distance and speed from the reference station in the same manner as described in FIG. 6 of the conventional example, and the calculated distance (distance) data (position data) and The speed data is output to the data processor 5.
Furthermore, the microphone 9 outputs the acquired voice to the data processing unit 5 as a voice signal.

The data processing unit 5 generates date / time data and records the input video data on the hard disk 13 as a recording medium as data that unifies the input shaking data, position data, and speed data.
The hard disk 13 uses a removable removable hard disk so that it can be used by either a recording device or an analysis device.

The inspection system according to one aspect of the present invention is portable, and enables measurement on an arbitrary vehicle, unlike a conventional vehicle dedicated to a cyclic inspection. For this reason, the distance information (km distance) data, which is position information, is input by the operator who gets on the distance distance input unit 4.
From the initially set kilometer distance, the operator pushes and inputs the switch of addition / subtraction (not shown) of the distance distance input unit 4 for each set value (for example, 100 [m]) while looking at the kilometer post on the rail 42. .
It should be noted that the accurate kilometer data and the speed data can be automatically input in a vehicle that can obtain an accurate kilometer signal and speed signal with a dedicated vehicle or the like.
In addition, a GPS (Global Positioning System) signal can be used as position information.
As the fluctuation value detected by the acceleration sensor 8, the left and right and vertical acceleration signals of the vehicle 1 are inputted in real time and recorded in synchronization with the video signal.

The data recorded as described above is used to search for a specific location such as an over-swaying location by an analysis apparatus having the analysis function of the inspection system of the present invention, and specify the location.
The configuration of an embodiment of the analysis apparatus used in the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of an embodiment of the analysis apparatus used in the inspection system of the present invention. 15 is an analysis device based on a personal computer, and 14 is a hard disk adapter accessible to the analysis device 15.

In FIG. 3, the analysis device 15 is operated by analysis software for analyzing the recorded data.
The hard disk 13 as a recording medium records the data recorded in the above-described inspection apparatus shown in FIGS. 1 and 2 and is analyzed by an operator who has acquired the data in the vehicle 1 or by another operator. It is inserted in the hard disk adapter 14 connected to the device 15 main body, and can communicate with the analysis device 15 main body.

The analyzer 15 mainly has the following functions.
1) Playback of recorded images and data display functions.
2) A function for collecting over-running points.
3] Image search function from over-swaying location, distance, time, etc.
4) Distance data correction function.
5) Data output function.

The purpose of this system is to specify the location where the fluctuation value exceeds a certain reference value and output it as data for track maintenance.
In FIG. 3, the data recorded in the hard disk 13 is retrieved by an operation from the analysis device 15 via the hard disk adapter 14.
After the search, according to the operation of the operator, the analysis device 15 takes out the necessary fluctuation value data, calculates the fluctuation value of all the amplitudes from the extracted fluctuation value data, and only the data of the places where all the amplitudes are exceeded. A list of excess points is created by searching and collecting the data.
The created list is displayed on a monitor screen of the analysis device 15 or the like, for example.

FIG. 4 is a diagram showing an example of the data collection operation screen displayed on the monitor screen of the analyzer 15 of the present invention. 16 is a data collection operation screen, 16-1 is a file selection operation graphic, 16-2 is a data recording file name input operation graphic, and 16-3 is a text information input operation for inputting information such as the title of the file to be created. Figure, 16-4 is a start operation figure, 16-5 is a data display field for displaying collected data, 16-6 is a progress display field for displaying the current data collection progress, and 16-7 is a collection Tab, 16-8 is an edit tab, 16-9 is a table search tab, 16-10 is a search tab for hours and kilometers, 16-11 is a correction tab for hours and kilometers, 16-12 is a playback tab, 16-13 is Settings tab, 16-14 is a file copy tab.
Each function can be transferred by selecting tabs 16-7 to 16-14 at the top of the screen.

  When the function of the collection tab 16-7 is selected by operating the analysis device 15 of FIG. 3, the data collection operation screen 16 of FIG. 4 is displayed. The operation of data collection, such as the selection of the collection tab 16-7 described above, is performed by a GUI (Graphical User Interface) by an input device (not shown) of the analysis device 15 such as a pointing device such as a mouse or a keyboard. ) Follow the steps below for operation.

In FIG. 4, when the right “の” of the file selection operation graphic 16-1 is pressed using an input device, a file recorded in the hard disk 13 is popped up on the monitor screen. The operator selects a file from which data is collected from the pop-up file list.
Next, the operator presses the data recording file name input operation graphic 16-2 using the input device, and inputs the collected file name for recording data in the file name input field in the graphic 16-2.
Furthermore, information such as the title of the file created using the input device is input into the input field in the text information input operation graphic 16-3. Text data such as comments input in this field is recorded as a header in the file and printed as a title when data is printed.
Thereafter, when the operator presses the start operation graphic 16-4 using the input device, the analyzer 15 starts data collection in accordance with the collection conditions displayed in the data display column 16-5. During the collection, the progress status of data collection is displayed in the progress status display column 16-6.
The collected data is recorded in the set collection file.

As the collection conditions, various conditions for collecting data can be set in advance by a setting function. Basically, the purpose is to collect data of a place where a fluctuation greater than the reference value of the vertical and horizontal values of all amplitudes has occurred, and data exceeding this value is collected. However, it is possible to set a distance range, a time range, and the like by a setting function.
Further, the data collected at this time is only measurement data, and large-capacity image data is not searched, so that it can be collected at high speed.
In FIG. 4, by selecting the kilometer correction function, a kilometer correction operation screen as shown in FIG. 5 is displayed.

  Next, the procedure for identifying the location of occurrence from the collected data will be described with reference to FIG. FIG. 5 is a diagram showing an example of a data collection operation screen displayed on the monitor screen of the present invention. In the present embodiment, this operation is referred to as “kilo kilometers correction”. 17 is the kilometer correction operation screen, 17-1 is the playback image display field, 17-2a and 17-2b are the fluctuation amount display bar graphic, 17-3 is the data display / operation screen, and 17-4 is the file selection graphic. , 17-5 is the data display column of the read file, 17-6 is the figure for search operation, 17-7 is the distance value displayed in the data display column 17-5, 17-8 is the header information input column, 17- 9 is a figure for file save operation, and 17-10 is a collection file field where the input file name is displayed.

The display contents of the kilometer correction operation screen 17 in FIG. 5 will be described as follows.
The playback image display field 17-1 displays the playback image. Further, on the reproduced image, for example, by right-clicking a mouse which is one kind of pointing device, it is possible to shift to an operation for saving or copying the displayed image as a still image.
The shaking amount display bar figures 17-2a and 17-2b display the shaking amount data being played in a bar graph. The shaking amount display bar graphic 17-2a displays the amount of shaking in the vertical direction of the vehicle, and the shaking amount display bar diagram 17-2b displays the amount of shaking in the left and right direction of the vehicle.

In addition, the following items are displayed on the data display / operation screen 17-3.
That is, (1) the file number to be reproduced “FILE No.”, (2) the number of files recorded on the hard disk “FILES”, (3) the recording time of the file to be reproduced “LENGTH”, (4) the file is being reproduced Image recording time “TIME”, (5) Reproduced image distance “KILO”, (6) Graphic for selecting a file to be played “FILE SELECT: Left arrow / Right arrow”, (7) Train Speed meter figure “SPEED”, (8) Radio button “Resolution” to select the resolution of the image to be displayed, (9) Sound volume adjustment figure “Voice volume”, (10) Voice mute button figure “Voice ON / OFF ", (11) Radio button" BIG DISPLAY "for changing the screen size of the playback image display field 17-1, (12) Hard disk operation button graphic, (13) Other button graphic.

For example, in the data display / operation screen 17-3 in FIG. 5, the sound mute button figure “sound ON / OFF” repeats sound output and mute each time the figure is pressed with a mouse or the like. The radio button “BIG DISPLAY: FRM / FLD” for changing the size of the screen opens the enlarged display screen when the “FLD” radio button is on, When the “FRM” radio button is on, the image is played back in the normal size of the playback image display field 17-1 in FIG.
Further, the hard disk operation button graphic of FIG. 5 is substantially the same as the mark displayed on the operation button for normal video recording operation and has the same function. As the types of operation buttons, for example, a playback button (normal playback), a pause button (pauses an image), a stop button (stops playback of an image or recording), and a frame return button (returns one frame at a time when paused) , Fast rewind button (return during playback), fast forward button (fast forward during playback), frame advance button (send one frame at a time). Furthermore, a bar graphic is displayed at the bottom of the reproduction image display field 17-1, the length of the reproduction image is made to correspond to the length of the entire bar, and the graphic indicating the location at the time of reproduction moves during reproduction. The image displayed in the reproduction image display column 17-1 can be changed (moved) to an arbitrary reproduction position by dragging the figure indicating this place with a mouse or the like and moving it within the bar.

The kilometer correction operation shown in FIG. 5 is executed according to the following procedure. The operator performs GUI operation on the analyzer 15 as follows.
Reading file selection figure 17-4 When "LOAD" is pressed, a list of the file names collected is displayed in a pop-up. The operator selects the reading file to be corrected about kilometer. By this operation, the data list of the read file collected is displayed in the data display column 17-5 of the read file at the bottom of the screen.
For example, the operator moves the cursor to the row of the position where the sway is to be corrected by about a kilometer, and presses “SEARCH” for the search operation graphic 17-6. By this operation, the selected fluctuation occurrence location is automatically searched, and the track image is displayed as a still image on the reproduction image screen.

In this embodiment, the distance information is not accurate because it is manually input by the operator (for example, every 100 [m]). Therefore, the exact distance needs to be re-confirmed from the image and re-entered from that information. Therefore, check the image by operations such as frame return and frame advance, and the state of the shaking generation based on information such as the display status of the left and bottom shaking amount display bar figures 17-2a and 17-2b in the playback image display field 17-1. Enter a more accurate distance value. To input the correct distance value, select the distance value 17-7 of the target line of the file data displayed in the list in the data display column 17-5 of the read file, and the operating vehicle inputs the correct distance value.
In this way, the kilometer correction of the occurrence location is performed sequentially.
Note that this operation is not necessary when an accurate distance signal can be input from the vehicle side.

In addition, comments such as cause, structure, etc. can be written in the comment field on the right side of the data display field 17-5 of the read file, and the written comment is also printed on the form.
It is also possible to select a line on the list in the data display column 17-5 of the read file and delete the line or add a line with the right mouse button.
In the header information input field 17-8, information on the measured line (for example, line name, measurement section, up / down, etc.) is input as header information.
Finally, click the file save operation figure 17-9 “SAVE” (push) to save the modified file.

It is also possible to convert and store the data for the specified database.
Other functions include an editing function that re-collects data by specifying collection conditions again from the collected data file, an image search function from distance and time, an image playback function, a form printing function, an image file copying function, And various condition setting functions.

The purpose of the railway vibration inspection system described in the above embodiment is to identify a location where a large vibration occurs in the vehicle due to track conditions, etc., and is used as data for track maintenance work. You only need to know where the sway occurred and the exact distance. However, over the entire track to be inspected, the video (which may include sound) and the inspection data are recorded in a unified manner, and the video and data are placed on the same screen for analysis. We are trying to improve.
In addition, it is possible to check the change information by checking the line status and surrounding conditions in all the lines and creating a database of the status and check results for each inspection.
2 and 3, the hard disk and the hard disk adapter are used. However, the present invention is not limited to this. For example, a randomly accessible recording such as a semiconductor memory and a semiconductor memory adapter is used. Any medium may be used, or a combination thereof may be used.

  According to the above-described embodiment, in a railway vibration inspection system, a recording medium can be randomly accessed such as a hard disk, a recording method for simultaneously recording video and data, and a specific location is detected from the recorded data at high speed. The maintenance management work can be made more efficient by the video data analysis device and the display format of the analysis device.

  Although the above embodiment has been described with respect to a railway vibration inspection system, any inspection system for the maintenance of structures such as railways, roads, bridges, and tunnels can be applied.

The figure for demonstrating the inspection system of one Example of this invention. The block diagram which shows the structure of one Example of the data recording device of the test | inspection system of one Example of this invention. The block diagram which shows the structure of one Example of the analyzer used for the test | inspection system of this invention. The figure which shows an example of the data collection operation screen displayed on the monitor screen of this invention. The figure which shows an example of the data collection operation screen displayed on the monitor screen of this invention. The system system diagram and screen display example of a mounting part in the vehicle in the conventional inspection system.

Explanation of symbols

  1: vehicle, 2: TV camera, 3: data recording device, 4: distance input unit, 5: data processing unit, 6: operation unit, 7: color monitor, 8: acceleration sensor, 9: microphone, 10: power supply unit , 11: Battery, 12: Hard disk adapter, 13: Hard disk, 14: Hard disk adapter, 15: Analyzer, 16: Data collection operation screen, 16-1: Graphic for file selection operation, 16-2: Data recording file name input Operation graphic, 16-3: Text information input operation graphic, 16-4: Start operation graphic, 16-5: Data display field, 16-6: Progress display field, 16-7: Collection tab, 16- 8: Edit tab, 16-9: Table search tab, 16-10: Time / km search tab, 16-11: Kilometer correction tab, 16-12: Playback tab, 16-13: Settings tab, 16-14: File copy tab, 17: Kilometer correction operation screen, 17-1: Playback image display field, 17-2a, 1 7-2b: Shaking amount display bar figure, 17-3: Data display / operation screen, 17-4: Figure for reading file selection, 17-5: Data display column for reading file, 17-6: Figure for search operation, 17-7: Distance value, 17-8: Header information input field, 17-9: File saving operation figure, 30: Screen, 17-10: Collected file field, 31: TV camera, 32 video / sway amount superimposing device 33: Monitor, 34: Acceleration sensor, 35: Distance detection device, 36: Vehicle upper, 37: Ground child, 38: Speed generator, 39: VTR, 40: VTR tape, 41: Vehicle, 42: Rail.

Claims (1)

A TV camera that captures an image of the field of view and outputs video data, a symptom detection sensor that detects a predetermined symptom at a target location while the moving body is moving, and a position of the target location where the predetermined symptom is detected by the sensor And a recording unit that digitizes the symptom detection sensor and the sensor signal output from the position sensor as sensor data, and records the sensor data on a removable recording medium in synchronization with the video data. A portable inspection device that can be mounted on the movable body,
An adapter for mounting the removable recording medium and communicating with the analysis device, and searching for a target location from the video data and the sensor data recorded on the removable recording medium mounted via the adapter. An analysis device comprising a data analysis unit;
A data inspection system characterized by comprising:

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