JP2994987B2 - Continuous image capturing device for rotating body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating body continuous image photographing apparatus applied to observation of a rotating object such as a computer disk, a turbine, a fan, and the like.

[0002]

2. Description of the Related Art A conventional rotating body image photographing apparatus is described below.
This will be described with reference to FIG. In the conventional device shown in FIG.
When photographing the rotating state of the wing 4 of the fan 5 as a rotating body, the rotation sensor 3 attached to the casing 1
The rotation mark _3a provided on the rotation shaft _5a is detected and a signal is output.

[0003] This signal is input to the rotary signal generator 06, the generator 06 outputs a rotation signal once a pulse output whenever the rotary shaft 5 _a rotates once, the phase adjuster 07
Light source controller 08 which receives this rotation signal via
Emits light each time.

The light emitted by the light source controller 08 is applied to the wing 4 to be photographed via a light transmission cable 09,
While the light is being irradiated, the wing 4 is photographed by a sensor (camera) 02 installed at a specific location on the casing 1 of the fan 5, and the image is received by the image receiving device 011 via the light receiving cable 010. After being image-processed by the image processing device 012, it is recorded in the recording device 013.

[0005]

SUMMARY OF THE INVENTION In a conventional device,
When precisely observing the movement of a rotating object attached to a rotating body, it is necessary to enlarge and visualize the part of interest, but since the object is moving, it is possible to continuously shoot that part I couldn't get a precise image.

[0006] Further, it was not possible to photograph a change occurring in an object during one rotation of the rotating body. The present invention seeks to solve the above problems.

[0007]

According to the present invention, there is provided an apparatus for photographing continuous images of a rotating body, wherein a plurality of the rotating bodies are arranged in a circumferential direction and are fixed to a fixed portion. A rotation sensor fixed to a fixed portion and detecting a rotation mark provided on the rotating body to detect a rotation position of the rotating body during rotation; a window synchronized with the rotation of the rotating body by inputting a rotation signal from the rotation sensor; A window opening command signal device that outputs an opening command signal to each of the imaging sensors, and an image captured by the imaging sensor is input and an image of a specific part of the rotating body is output side by side, and also compared with a reference image. It is characterized by having a video processing device for outputting.

[0008]

In the above, the window opening command signal device inputs the rotation position of the rotating body from the rotation signal output by the rotation sensor, and outputs the window opening command signal to each of the photographing sensors in synchronization with the rotation of the rotating body. can do.

For this reason, a window opening command signal is output from the window opening command signal device to each of the photographing sensors when the specific portion of the rotating rotator passes near each photographing sensor. Each of the imaging sensors can image the specific part.

The images captured by the respective imaging sensors are arranged and output in the order in which the images of the specific part were captured by the image processing device. Therefore, the deformation occurring at the specific part during one rotation of the rotating body. Can be continuously observed, and a reference image is input in advance to the image processing apparatus, and a captured image can be output in comparison with the reference image. Analysis becomes possible.

[0011]

FIG. 1 shows a video photographing apparatus according to an embodiment of the present invention.
Shown in The present embodiment is a case where the present invention is applied to observation of eight blades 4 _a , 4 _b ,..., 4 _h during the rotation of the fan 5.

[0012] The embodiment shown in Figure 1, eight blades 4 _a respectively arranged in a row in the circumferential direction of the casing 1 of the fan 5 with a predetermined gap in rotation, 4 _b, ..., 4 12 sensors to shoot _{h (camera) 2 a, 2 b, ...} , 2 l, the rotation signal to detect the rotation mark 3 _a provided on the rotary shaft 5 _a of the fan 5 is disposed in the casing 1 , A rotation signal is input from the rotation sensor 3, and a window opening command signal is sent to each of the sensors (cameras) 2 _a ,
2 _b, ..., window open command signal device for outputting to the 2 _l 6,
The respective sensors (cameras) 2 _a , 2 _b ,..., 2 _l photographing the wing 4 by inputting a window opening command signal from the same device 6.
A video processing device 8 for inputting and processing a video via a video storage device 7 and a video output device 9 for inputting and outputting a processed video from the device 8 are provided.

In the above description, the rotation sensor 3 includes the rotation shaft 5
for outputting a rotation signal to each time of detecting the rotation mark 3 _a provided on _a, rotating shaft 5 _a as shown in FIG. 2 (a) and outputs a rotation signal to each rotation of the window open command signal Input to the device 6.

The window opening command signal device 6 has the configuration shown in FIG.
As shown in (c), the mounting angle φ ₁ of each sensor (camera) 2 _a , 2 _b ,..., 2 _l with respect to the position of the wing 4 _a when the rotation sensor 3 detects the rotation mark 3 _a ,
φ ₂ ,..., φ _l , and sensors (cameras) 2 _a , 2 _b ,
..., mounting angle theta ₁ between _{2 l, θ 2, ...,} θ and ₈ is input in advance, the window open command signal device 6 angular velocity of the rotating shaft 5 _a to rotate at a constant speed with these mounting angle Then, the timing is calculated and a window opening command signal is output, and each sensor (camera) 2 _a , 2 _b ,.
Open 2 _l window.

That is, as for the sensor _2a , FIG.
As shown in FIG.
After entering a more rotation signals, when the rotary shaft 5 _a is an angle phi ₁ rotates, since the blades 4 _a passes through the sensor 2 _a, window open command signal device 6, when the rotary shaft 5 _a is the rotation angle phi ₁ And outputs _a window open signal to the sensor _2a .
_a is to shoot the wings 4 _a.

Furthermore, when the rotary shaft 5 _a the angle theta ₁ is rotated,
This time, since the wing _4b passes, the rotation axis _5a has an angle φ ₁ +
A window opening command signal is output to the sensor _2a when the rotation of θ ₁ has been completed, and the sensor _2a takes an image of the wing _4b . Similarly, the wings 4 _c , 4 _d ..., 4 _h are sequentially photographed, and the wings 4 _a , 4 _a ,
The shooting of 4 _b ,..., 4 _h is repeated.

The same applies to the sensors 2 _b , 2 _c ,..., 2 _h.
After the rotation signal is input, the rotation axis _5a is turned to the angle φ ₂ , φ
_3, ..., when phi ₁₂ rotates, each sensor 2 _b,
2 _c ,..., 2 _h , the window open command signal is output, and the wing 4 _a
, And then the wings 4 _b , 4 _c ,... Are photographed.

[0018] 4 wing obtained by the above-mentioned _a, 4 _b, ..., 4
The image of _h is temporarily stored in the image storage device 7, and after the image processing is performed and sharpened by the image processing device 8, in order to facilitate observation of deformation of one wing during rotation, FIG. The images are rearranged as shown in c), or are arranged with the reference image in order to facilitate comparison with the reference image, and output from the image output device 9.

In this embodiment, the sensors 2 _a , 2 _a
Although images of the wings 4 _a , 4 _b ,..., 4 _{h that} can be taken by 2 _b ,..., 2 _l are all taken, when observation is required only for a specific wing, only the wing is limited. You can also shoot.

[0020]

According to the present invention, there is provided an apparatus for continuously photographing a rotating body according to the present invention.
A rotation sensor that detects the rotational position of the rotating rotator and outputs a rotation signal, a window opening command signal device that inputs the rotation signal and outputs a window opening command signal, and a window opening command signal that inputs the window opening command signal. The rotator makes one rotation by providing an imaging sensor that captures a part of the rotator and an image processing device that inputs a captured image of the rotator, performs predetermined processing, and outputs the processed image. It is possible to continuously observe deformation occurring in a specific part in between, and it is possible to observe a captured image in comparison with a reference image, and to analyze a deformation state.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory views of a video photographing apparatus according to an embodiment of the present invention, wherein FIG. 1A is a perspective view of a fan, FIG. 1B is a side sectional view of the fan, and FIG. FIG. 3 is a diagram viewed from an arrow, and FIG.

FIG. 2 is an operation explanatory view of the device according to the one embodiment,
(A) is an output signal of a rotation sensor, (b) is a window opening command signal, (c) is an explanatory view of an output image.

FIG. 3 is an explanatory view of a conventional device, (a) is an overall view,
(B) is a BB arrow view of (a).

[Explanation of symbols]

REFERENCE SIGNS LIST 1 casing 2 sensor (camera) 3 rotation sensor 3 _a rotation mark 4 blade 5 fan 5 _a rotation axis 6 window open command signal device 7 video storage device 8 video processing device 9 video output device

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) G01B 11/00-11/30 102 G01N 21/84-21/91 G06T 7/00-9/20

Claims (1)

(57) [Claims] 1. A photographing sensor which is provided in a circumferential direction of a rotating body and is fixed to a fixed portion, each of which captures a part of the rotating body, and a rotating mark fixed to the fixed portion and provided on the rotating body. A rotation sensor for detecting and detecting the rotational position of the rotating body during rotation, a window opening command for inputting a rotation signal from the rotation sensor and outputting a window opening command signal synchronized with the rotation of the rotating body to each of the imaging sensors; A signal device, and an image processing device for inputting an image captured by the imaging sensor, outputting an image of a specific portion of the rotating body side by side, and outputting the image in comparison with a reference image. Continuous video camera.