JP3378339B2 - Method and apparatus for detecting surface shape of remote object - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be used, for example, from the outside of a vertical hole opened on the ground to remotely check an underground buried pipe exposed in the vertical hole without allowing a person to enter the vertical hole. The present invention relates to a technique for detecting the surface shape of a buried object such as when observing the surface shape of the buried tube without a person approaching a remote object (hereinafter abbreviated as a remote object).

[0002]

2. Description of the Related Art Conventionally, in order to detect the surface shape of a remote object, a person directly observes the surface shape by visual observation,
Alternatively, it has been common to operate an objective camera device remotely, project a surface image of the remote object, and visually check the image to determine the surface shape.

[0003]

However, in order for a person to directly see a remote object, the distance may be large, and the cognitive ability is limited. Therefore, accurate detection cannot be performed, and the remote object cannot be detected. In a narrow place where people cannot enter or in a dangerous place,
In the case where a person approaches and cannot perform detection, there is a drawback that only unreliable detection can be performed.

Further, by remotely operating the objective camera device,
Even if the image of the remote object is displayed and the surface shape is observed by visually observing the image, it is difficult to accurately recognize the surface shape (especially unevenness) only with a flat image, and the detection result is reliable. There is no choice but to have poor sex.

Therefore, in view of the above-mentioned drawbacks, an object of the present invention is to accurately detect the surface shape of a remote object in a narrow place where a person cannot enter or a dangerous place. It is an object of the present invention to provide a surface shape detection method for a remote object and a surface shape detection device for a remote object.

[0006]

[Means for Solving the Problems] The characteristic means of the first invention for achieving this object is to provide a shape-retaining cylindrical body inside,
While accommodating a transparent deformable body that is deformable at room temperature, it is expandable and contractible in the surface direction, and an abutting end face having a uniform pattern is formed in the opening at one end of the tubular body.
While abutting the abutting end surface to a remote object, pressing the abutting end surface against the remote object via the deformable body,
The shape of the remote object surface is detected by observing the change of the pattern formed on the abutting end face through the deformable body.
The characteristic configuration of the second invention is that the cylindrical deformable body accommodates a deformable and transparent deformable body at room temperature, and is expandable and contractible in the plane direction to form a uniform pattern. The end face is formed in the opening at one end of the cylindrical body, and the observation means for observing the pattern of the contacting end face through the deformable body is provided at the other end of the cylindrical body. These actions and effects are as follows.

[0007]

In other words, the contact end face is contacted with a remote object,
When pressed against the remote object, the abutting end surface is expandable and contractible in the surface direction, and the deforming body presses the abutting end surface while deforming into a shape along the surface shape of the remote object.
The contacting end surface is deformed in the cylindrical body along the surface shape of the remote object. At this time, since a uniform pattern is formed on the contact end face, the pattern is deformed from a uniform state to a non-uniform state in accordance with the deformation.

By observing the pattern in this state, it is possible to stereoscopically detect from the deformed state of the pattern whether or not the surface of the remote object has an uneven shape.

If the deformable body is plastically deformable, the abutting end face can be pressed against the surface of the remote object in a state of being along the surface of the remote object, and the film body can move in the plane direction. If it is formed so as to be expandable and contractible, it is easily deformed along the remote object, and the deformable body can be held in the cylindrical body.

Further, if the film body is made of a transparent material,
Not only the uneven shape of the surface of the remote object but also the color state can be observed, and more detailed surface shape can be detected.

Further, if the abutting end face is formed on one end face of a deformable body formed of a transparent elastically deformable organic polymer material, the abutting end face and the deformable body are formed as one member. Since it can be formed by, surface detection can be performed with a simple configuration.

If a camera device or a fiberscope is used for the observation, the change in the pattern can be accurately observed remotely.

Further, in order to perform such observation, if the shape detecting device of the remote object of the second invention is used, the surface shape can be accurately detected with a simple structure, and at the tip of the observing means. If a transparent plate is continuously provided and the transparent plate is slidably fitted into the cylindrical body so as to be able to press the deformable body, the deformable body is pressed by a part of the structure of the observation means, This is more convenient because the abutting end face can be along the remote object.

[0014]

As a result, it becomes possible to accurately detect the surface shape of a remote object, and it is possible to safely detect a remote object even in a narrow place where people cannot enter or in a dangerous place. In addition to being able to perform the above, it is possible to suppress the inconvenience caused by false detection. If the surface shape is observed while repeatedly pressing and releasing the deformable body, the uneven shape can be detected more accurately.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the remote object surface shape detecting apparatus of the present invention has a contact portion A for a remote object formed at the tip of a photographing part C1 of a camera device C which is an example of an observing means. And the contact part A is configured as follows.

A lattice-shaped pattern is printed on a transparent polyvinyl chloride film body 1 which is stretchable in the plane direction.
Is stretched over one opening 2a of the cylindrical body 2 made of hard polyethylene to form the abutting end face 4, and the cylindrical body 2
As an example of a deformable body, a liquid silicone resin 3 which is liquid at room temperature is housed inside, and the photographing section C1 is provided in the other opening 2b via a transparent acrylic resin piston plate 5 (transparent plate). The abutment portion A is formed by being fitted in the cylindrical body 2 and continuously connected in a slidable manner.

The camera device C, as shown in FIG.
A camera unit C2 is provided with a photographing unit C1 extending through a camera cable C3 forming a long optical path. The photographing unit C1 is sealed with the transparent acrylic resin piston plate 5 to withstand pressure. The silicone resin 3 is protected and uniformly pressed against the remote object. As a result, in the photographing section C1, the lattice pattern printed on the film body 1 is captured through the piston plate 5 and the silicone resin 3, and the captured image is captured by the camera device through the camera cable C3. Body C
The image is received at 2, and output to an output device so that the degree of deformation of the lattice pattern can be observed.

When observing the surface shape of the underground buried pipe 6 (hereinafter simply referred to as a pipe), which is an example of a remote object, by using the above-described remote object surface shape detection device, first, a vertical hole is formed on the ground. H is dug, the pipe 6 is exposed in the vertical hole H, and the contact portion A is applied to the outer surface of the pipe 6 from outside the vertical hole H by remote control using a remote control jig 8. Next, the photographing section C1 is pushed into the cylindrical body 2 to bring the contact end surface 4 of the contact section A into close contact with the tube 6 (FIG. 2).
reference).

At this time, the photographing section C1 is provided with the piston plate 5
The silicone resin 3 is pressed through the pressurizing force, and the pressing force is transmitted to the contacting end face 4, and when the contacting end face 4 has no unevenness on the surface of the pipe 6, the pattern is as shown in FIG.
As shown in (a), it shows a uniform state, and when the surface of the pipe 6 has irregularities (scratches 7 in the figure), it is deformed along the irregular shape of the pipe 6, for example, as shown in FIG. Since it deforms as shown, it can be determined that the surface of the pipe 6 has irregularities due to corrosion, scratches, or the like.

[Other Embodiment] In the previous embodiment, a transparent fluid silicone resin 3 is used as a deformable body, and the contact end face 4 is stretchable in the surface direction.
However, the deformable body 3 is not limited to this, and a transparent liquid such as water or oil may be used. Alternatively, a gas may be sealed in the cylindrical body 2 to be used as the deformable body 3. Is. In such a case, if the deformable body 3 is a liquid resin having viscosity, it is easy to seal the inside of the cylindrical body 2, which is advantageous. Further, the deformable body 3 may be composed of a transparent elastic body, and a uniform pattern may be printed on the side of the elastic body that comes into contact with a remote object.

The contact end face 4 does not necessarily have to be made of a transparent material. For example, even if the contact end face 4 is formed of an opaque material, the photographing section C1 of the contact end face 4 is formed. A uniform pattern is printed on the side, and the observation means C
It is sufficient that the pattern can be observed with.

Further, the above-mentioned pattern does not necessarily have to be a lattice pattern, and a large number of dots (.) May be arranged and printed. Further, the contacting end surface 4 may be uniformly colored, and the coloring may be changed in accordance with the deformation of the contacting end surface 4. In such a case, it is collectively referred to as a pattern change including a change in color.

Further, the cylindrical body 2, the piston plate 5, and the camera device C are not limited to the configurations of the above-described embodiments, and for example, the cylindrical body 2 is provided with the deformable body 3 therein. It is sufficient that the deformable body 3 has a function capable of being deformably held along the unevenness of the remote object, and it is preferable that the deformable body 3 is rigid, and the opening 2a having a shape along the remote object to be abutted.
It is preferable that the deformable body 3 is configured to more easily follow the remote object. As for the piston plate 5, if the deformable body 3 is configured to be pressed against the remote object and the cylindrical body 2 is configured to be a slidable transparent body, acrylic A resin other than a resin may be used, that is, a transparent plate may be used, and a mechanism for pressing the deformable body 3 may be provided in addition to the photographing unit C1, and the camera device may include the contact unit A. On the other hand, it is not always necessary to connect with the camera cable C3, and it is sufficient that the remote camera device C can observe the deformation state of the pattern. Further, instead of the camera device C, the fiberscope may be used to directly observe the pattern, and these are collectively referred to as an observing means.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an overall view of a surface shape detection device of a remote object according to the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of a remote object surface shape detection device of the present invention.

FIG. 3 is a diagram showing a change in pattern

[Explanation of symbols]

1 membrane 2 cylinders 2a opening 3 deformed body 4 End face for contact 5 transparent plate

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Claims (11)

(57) [Claims] 1. A deformable and transparent deformable body (3) at room temperature is accommodated inside a cylindrical body (2) having a shape-retaining property, and is expandable and contractible in a plane direction to form a uniform pattern. The abutting end face (4) is formed in the opening at one end of the tubular body (2) so that the abutting end face (4) abuts a remote object and the deformable body (3) is attached. The abutment end face (4) is pressed against the remote object through the deformed body (3) and the change in the pattern formed on the abutment end face (4) is observed to detect the shape of the remote object surface. Surface shape detection method for remote objects. 2. The deformable body (3) is formed of a plastically deformable transparent organic polymer material, and the contact end face (4) is provided with an elastically deformable film body (1) as the opening. The method for detecting the surface shape of a remote object according to claim 1, wherein the surface shape of the remote object is stretched. 3. The method for detecting the surface shape of a remote object according to claim 1, wherein the film body (1) is formed of a transparent organic polymer material. 4. The deformable body (3) is made of an elastically deformable organic polymer material, and the deformable body (3) is formed.
2. The remote object according to claim 1, wherein the contacting end surface (4) is formed by forming a uniform pattern on a surface facing the opening in a state where the object is housed inside the cylindrical body (2). Surface shape detection method. 5. The surface shape detecting method according to claim 1, wherein a camera device or a fiberscope is used to observe the pattern. 6. A deformable and transparent deformable body (3) at room temperature is housed inside a cylindrical body (2) having a shape-retaining property, and is expandable and contractable in a plane direction to form a uniform pattern. An abutting end face (4) is formed in an opening at one end of the tubular body (2), and an observing means for observing a pattern of the abutting end face (4) through the deformable body (3) is provided in the tubular body. A surface shape detecting device for a remote object provided at the other end of the body (2). 7. An elastically deformable film body (3), wherein the deformable body (3) is a plastically deformable transparent organic polymer material, and the abutting end face (4) is stretched over the opening. The surface shape detecting device for a remote object according to claim 6, which is formed from 1). 8. The deformable body (3) is a transparent fluid that is plastically deformable, and the contacting end face (4) has the opening (2).
7. The surface shape detecting device for a remote object according to claim 6, which is formed from an elastically deformable film body (1) stretched over a). 9. The method according to claim 6, wherein the film body (1) is transparent.
8. The surface shape detecting device according to any one of 8 above. 10. The deformable body (3) is made of an elastically deformable organic polymer material, and the abutting end face (4) accommodates the deformable body (3) inside the cylindrical body (2). 7. The remote object surface shape detection device according to claim 6, wherein a uniform pattern is formed on the surface facing the opening (2a) in this state. 11. A transparent plate is continuously provided at the tip of the observing means, and the transparent plate (5) is slidably fitted into the other end of the tubular body (2) to allow the deformation. A remote control tool for forming a body (3) so that it can be pressed, holding the deformable body (3) in a tubular body (2), and guiding the tubular body to the remote object. 6. The surface shape detection device according to any one of 6 to 10.