JP3064528B2 - Exercise body inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to an automatic inspection of a moving body using image processing, and a large number of images to be inspected using an image recording medium such as a video tape, an image memory or an optical disk. The present invention relates to a moving object inspection device that temporarily collects data and its movement data, collects the data and collectively performs automatic inspection with a small number of image processing devices. The present invention relates to a moving body inspection apparatus suitable for intensively and automatically inspecting the dimension of a projected image of the above-mentioned image with the image recording medium and a small number of image processing apparatuses.

[0002]

2. Description of the Related Art Conventionally, when inspecting an image at a specific value of motion data of a moving body (for example, speed, displacement, individual number, etc.), it is generally necessary to identify what kind of motion data the screen involves. In the corner of the screen, the screen displaying the movement data for human reading is temporarily recorded on the image recording medium, and during the inspection, the human reproduces the image and creates a still image on the screen to be inspected, and it is displayed in the corner of the screen Humans read the exercise data, and key-in the exercise data into an image processing apparatus for inspection.

[0003] Japanese Patent Laid-Open No.
No. 56096 has an "automatic outdoor monitoring device". this is,
After capturing an enemy battleship with a TV camera in a naval battle, the battleship image is identified by an image processing device, the battleship image is displayed on a display, and the bearing, ship type, nationality, etc. are automatically output to a recorder. It is something to do.

[0004] As another example of the characteristic prior art, there is an "electronic still camera" disclosed in JP-A-60-213183. This is an electronic still camera that records on a built-in cassette tape deck a screen image captured on a built-in sheet-like magnetic recording medium and the background audio and screen synchronization signal when the image is captured, and monitors it as necessary. The background audio is output from the cassette tape deck to the TV, and still images are output one by one from the magnetic recording medium of the camera body one after another in response to a synchronization signal with the screen recorded in the middle of the TV. Furthermore, when transferring the still camera screen and the background sound at the time of imaging to a videotape, in addition to the usual use of a videotape, a synchronization signal with the screen is recorded at an appropriate position on the videotape and stopped. It is intended for frame-by-frame advance.

[0005] As described above, a technique for simultaneously displaying predetermined exercise data as character information together with an image of a moving body on a screen has been attracting attention. When performing a wear inspection of a wheel of a railway vehicle, a work of applying a predetermined pattern to each of a number of wheels and measuring a gap size thereof to check the degree of wear requires a lot of labor and time. Therefore, the above-described image processing technology has begun to be applied. That is, while running the train, the wheel outer shape is imaged, and the amount of wheel wear is calculated by measuring the dimensions of the projected image.

[0006]

The above-mentioned JP-A-2-56
No.096 "Automatic outdoor monitoring device" aims to automatically output the result of image processing to a display and a recorder, and this system is to transfer a large number of image data and motion data of a plurality of inspection objects. If processing is to be performed, this system must be installed for each inspection object, so that there is a disadvantage that the entire inspection apparatus becomes very expensive.

On the other hand, an "electronic still camera" disclosed in Japanese Patent Application Laid-Open No. 60-213183 is a device for recording a synchronizing signal between an imaged screen and a background sound or a screen at the time of imaging, and outputting it to the outside as necessary. Although it is possible to record a synchronization signal with the screen in the audio recording unit, basically it is not possible to record exercise data for the purpose of recording the background sound,
In addition, it is impossible to automatically inspect an arbitrary motion state of the moving body from continuously captured images.

[0008] Also, in the above-mentioned inspection of the wear of the wheels of the railway vehicle, the operation of extracting an image of a specific wheel from a plurality of wheels must be performed manually. In addition, there is a problem that the operation of reading the exercise data displayed on the extracted screen by the operator and then keying in the image processing apparatus by the operator requires much labor and time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can continuously capture the motion state of a moving body such as a wheel of a railroad vehicle while having an inexpensive configuration, and can obtain both image data and motion data. An object of the present invention is to provide a moving body inspection apparatus capable of recording and reproducing in association with each other.

[0010]

According to the present invention, as a means for solving the above-mentioned problems, image data relating to a moving state of a moving body is recorded on an image recording medium. In a moving object inspection apparatus that displays necessary character information on a screen of a display device and performs a predetermined inspection on the moving object, a camera that captures an exercise state of the moving object and motion data of the moving object are detected. Motion data detecting means, and in the recording mode, the motion data signal from the motion data detecting means is recorded on the image recording medium using a digital signal synchronized with a horizontal synchronization signal or a clock signal for image processing, and A data signal recording / reproducing means for extracting the image data signal and the corresponding motion data signal from the recording of the image recording medium in the reproduction mode; It is obtained by a configuration including.

[0011]

In the above construction, in the recording mode, an image data signal from a camera for photographing the motion state of the moving object is input to the data signal recording / reproducing means, and the motion data signal from the motion data detecting means is also recorded as a data signal.・ Input to the reproduction means. The data signal recording / reproducing means records both of these signals on the image recording medium using a horizontal synchronization signal or a digital signal synchronized with a clock signal.

In the reproducing mode, the data signal recording / reproducing means can extract the image data signal and the corresponding motion data signal from the recording on the image recording medium. Therefore, the image of the moving object can be displayed together with the exercise data, and if necessary, both the image data and the exercise data can be input to the computer and analyzed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the first embodiment of the present invention.

In FIG. 1, a moving body 1 is driven by a motor 2 and its rotation angle is detected by a rotary encoder 3. That is, when the rotary encoder 3 emits a pulse, the rotation angle measuring unit 4 converts the number of pulses into a rotation angle and outputs the signal to the rotation angle input unit 5 as, for example, a hexadecimal number.

On the other hand, the CCD camera 6 captures an image of the state of movement of the moving body 1 and outputs signals from the image signal unit 7, the vertical synchronization signal unit 8, the horizontal synchronization signal unit 9, and the clock signal unit 10, respectively. The data is sent to an image input unit 12, a vertical synchronization signal input unit 13, a horizontal synchronization signal input unit 14, and a clock signal input unit 15 of the image recording apparatus 11.

The rotation angle input unit 5 converts the hexadecimal signal from the rotation angle measurement unit 4 into a pulse train (for example, a binary hex number) that can be identified by the signals from the vertical synchronization signal unit 8 and the horizontal synchronization signal unit 9. The image data is converted and output to the audio input unit 16 of the image recording device 11.

The image data signal from the image input unit 12 and the rotation angle signal (movement data signal) from the audio output unit 16 are sent to the video tape recording / reproducing unit 17 so as to be synchronized with each other. The signal is videotape 18
Will be recorded.

At the time of reproduction, the video tape recording / reproducing unit 17 separates the image data signal and the rotation angle signal from the video tape 18 separately into an image output unit 19 and an audio output unit 20.
Is sent to the image processing device 21 and the rotation angle output unit 22 via the.

These two signals are output to the vertical synchronizing signal output unit 2
3, horizontal synchronization signal output unit 24, clock signal output unit 25
The signals are synchronized by the signals received from the main unit 27 and are displayed on the display 26 or output to the main computer 27 for analysis.

FIG. 2 shows an image taken by the CCD camera 6.
It is displayed on the screen of a TV monitor as a display,
The scanning lines (500 lines) 100 have a vertical synchronization signal 101 and a horizontal synchronization signal 102.

As shown in FIG. 3, the vertical synchronization signal 101 functions as a screen switching mark, and is marked at the top of each screen. The horizontal synchronization signal 102 functions as a switching mark of the scanning line 100, and is marked at the head of each scanning line. The two horizontal synchronizing signals are equally divided by the clock signal 103, and the image signal 104 extracted from each pixel of the CCD camera 6 is divided by the clock signal 103.
It is synchronized with.

FIG. 4 shows an example using the horizontal synchronizing signal 102.
FIG. 4 is an explanatory diagram of a procedure for creating a pulse signal related to a rotation angle. That is, since the scanning line switching mark of the horizontal synchronization signal 102 is provided at each end of the 500 scanning lines 100, the rotation angle measuring unit 4 outputs the rotation angle hexadecimal data, for example, "4".
8H "is output.

The rotation angle input unit 5 converts this data into a binary hexadecimal hexadecimal pulse train "00100100", aligns the pulse of the vertical synchronization signal 101 with the head, and adds the rotation angle data to each pulse of the horizontal synchronization signal 102. "00100
Match each digit of "100". The pulse signal data created in this way is input as an electric signal from the audio input unit 16 of the image recording device (commonly called a video deck) 11, and the video tape recording / reproducing unit 17 outputs the image data from the image input unit 19. Video tape 18 in synchronization with the signal
Is recorded in the audio recording band.

When performing reproduction, the video tape recording / reproducing unit 17 transmits the image data and the rotation angle data from the rewound video tape 18 via the image output unit 19 and the audio output unit 20 to the image processing apparatus. 21 and the rotation angle output unit 22.

That is, by the operation opposite to that at the time of recording, the pulse signal data of the rotation angle is output from the audio output unit 20 to the rotation angle output unit 22, and the rotation angle output unit 22 outputs 1 pulse signal data.
The hexadecimal data is output to the main computer 27. On the other hand, an image data signal is output from the image output unit 19,
The image processing device 21 outputs an image data signal to the main computer 27 and displays the image data together with the rotation angle data on the screen of the display 26.

The main computer 27 performs a predetermined inspection based on these two data, and outputs the inspection result.

FIG. 5 is an explanatory view showing the correspondence between the image data and the rotation angle data relating to the moving body 1. Assuming that the resolution of the rotary encoder 3 is 5 °, the hexadecimal data of the rotation angle measuring unit 4 is 0 ° → 0H, 5 ° → 1H, 10 °
→ 2H, 15 ° → 3H, 20 ° → 4H, 25 ° → 5H,
… 120 ° → 24H,… 240 ° → 48H,… 355 °
→ 71H, 360 ° → 0H.

Assuming that the moving body 1 has a property of being appropriately expanded by centrifugal force when rotated by the motor 2, when examining the maximum diameter corresponding to an arbitrary angle, the outer shape of the moving body 1 is measured by the camera 6. An image is taken, and the rotation angle of each screen is synchronously recorded by the system of FIG. Then, when the video tape 18 is reproduced and the maximum diameter (φDmm) at each angle is measured by the image processing device 21, an inspection result as shown in FIG. 5 is obtained.

As described above, by reproducing the video tape 18 and performing image processing, it is possible to inspect the moving state of the moving body 1 at an arbitrary rotation angle. Furthermore,
If a program for automatically compiling the test results is created for the main computer 27, the test results as shown in FIG. 5 can be automatically printed out.

The embodiment shown in FIG. 1 also includes the following mode. The number of moving bodies is not limited to one, and may be plural.
In this case, the rotary encoder 3, the rotation angle measuring unit 4,
The camera 6, the image signal unit 7, etc. are installed in accordance with the number of the moving objects 1, and further, the image input unit 12, the audio input unit 16, the vertical synchronization signal input unit 13, the video tape recording / reproducing unit 17 of the image recording device 11. , The image output unit 19, the sound output unit 20, and the like are provided in accordance with the number of the moving bodies 1. Accordingly, the motion status of a plurality of moving bodies can be simultaneously recorded on the plurality of video tapes 18, and can be simultaneously reproduced and intensively inspected at one place. The motion data of the moving body 1 is not limited to the rotation angle but may be speed data. In this case, another speed sensor may be used instead of the rotary encoder 2. In addition, the exercise data may be a moving distance, acceleration, noise, and the like. In the above embodiment, when the rotation angle data is recorded in the audio recording band of the video tape, the horizontal synchronization signal 102 is used in order to take the timing of the pulse data transfer. However, depending on the resolution of the audio recording band, the clock signal 103 is used. May be used. It is also possible to record the motion data such as the rotation angle data in a vacant part in the image recording band without recording it in the audio recording band of the video tape. The image recording medium is not limited to the video tape 18 described above, but may be an image memory or an optical disk.

Next, a second embodiment of the present invention will be described. In this embodiment, the moving body is a train wheel.

FIG. 6 is an explanatory diagram showing the configuration near the wheels 201 and 202 of the train. In this figure, the rail 20
3 are provided with holes 203a and 203b, and the holes 203a and 203b are always urged by a spring material or the like so that contact members 204a and 203a whose heads always slightly protrude from the upper surface of the rail. 204b is provided.

The lower ends of the contact members 204a and 204b are in contact with the plunger portions of the limit switches 205a and 205b, so that each time each wheel contacts each contact member, the limit switch outputs an ON signal. The traveling direction of the train is the direction of the arrow in FIG.
Is a right front wheel, and 202 is a right rear wheel.

Before and after the holes 203a and 203b of the rail 203 on which the contact members 204a and 204b are provided, there are provided a camera installation hole and an illumination lamp installation hole. Cameras 206a and 206b and illumination lights 207a and 207b are provided in the unit.

FIG. 7 is a block diagram for explaining the schematic operation of this embodiment. In this figure, each ON signal from the limit switches 205a to 205d is sent to the counter 208 and counted. Since the wheel number data generator 209 can specify the wheel at the time of counting based on the count number, the wheel number data generator 209 generates wheel number data for each count number.

Then, through the same process as described above with reference to FIG.
The data is recorded on video tapes 210a to 210d in synchronization with the image data signals from a to 206d. In this case, images captured by the cameras 206a to 206d can be displayed on the screen of the monitor 211.

When playing back a video tape on which such recording has been made, the video tape is rewound and then manually set in the image processing device 212. Then, the image data and the corresponding wheel number data are output from the image processing device 212 to the main computer 213.
Then, the main computer 213 calculates, for each wheel number, “amount of wear on standard wheels”, “amount of collar wear”,
Inspection results for "amount of tread wear", "shape data", etc. are output.

[0038]

As described above, according to the present invention, an image data signal from a camera for photographing the exercise situation of a moving object is provided.
Since the motion data signal from the motion data detecting means is recorded on the image recording medium in synchronization with each other, it is possible to continuously photograph the motion state of the moving body such as the wheels of the railway vehicle while having an inexpensive configuration. , Image data and exercise data can be recorded / reproduced in association with each other. In particular, when synchronizing the image data signal and the motion data signal with each other, a horizontal synchronizing signal or a clock signal for image processing is used, so that the moving speed of the moving body is extremely high. However, it is possible to accurately correspond to the exercise data for each minute unit with respect to the exercise situation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of an image on the TV monitor according to FIG. 1;

FIG. 3 is an explanatory diagram of a function of each signal in FIG. 2;

FIG. 4 is an explanatory diagram showing a procedure for creating a motion data signal in FIG. 1;

FIG. 5 is an explanatory diagram showing a correspondence between image data and rotation angle data on a moving body 1 obtained from the apparatus of FIG. 1;

FIG. 6 is an explanatory diagram showing a configuration around a wheel according to a second embodiment of the present invention.

FIG. 7 is a block diagram for explaining a schematic operation of the second embodiment.

[Description of Signs] 1 moving body 3 movement data detecting means (rotary encoder) 6 camera (video camera) 17 video tape recording / reproducing unit 18 image recording medium (video tape) 26 display

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01B 11/00-11/30 102 B61K 9/12 H04N 7/18

Claims (2)

(57) [Claims] An image data relating to an exercise state of a moving body is recorded on an image recording medium, and at the time of reproducing the recording, necessary character information is displayed on a screen of a display together with an image of the moving body. In a moving body inspection apparatus that performs a predetermined inspection on a body, a camera that captures a movement state of the moving body, a movement data detection unit that detects movement data of the movement body, and in a recording mode, the movement data detection unit The motion data signal is recorded on the image recording medium using a digital signal synchronized with a horizontal synchronization signal or a clock signal for image processing, and in the reproduction mode, the image data signal is recorded from the recording on the image recording medium. And a data signal recording / reproducing means for extracting the exercise data signal corresponding to the exercise data signal. 2. The moving body inspection apparatus according to claim 1, wherein the moving body is a wheel of a railway vehicle, and the movement data is a rotation angle of each wheel.