JP4233476B2 - Measuring target forming device - Google Patents

Description

  The present invention relates to an apparatus for forming a measurement target used in an apparatus for non-contact measurement of vibration characteristics, in particular fine movement, of vibration characteristics such as a natural frequency and a natural vibration mode of a structure.

  In the railway field, etc., methods for inspecting the soundness of structures using vibration measurement have been studied. In those studies, a contact-type vibrometer (acceleration or speed sensor such as a moving coil type or servo type) is installed on the structure and the vibration of the structure is measured (Patent Document 1, Non-Patent Document 1 below). Patent Literatures 1 to 3).

On the other hand, the inventors of the present application analyze the vibration characteristics of a structure using nonlinear structural analysis (the following non-patent document 4) for the purpose of developing a technique capable of accurately inspecting the degree of earthquake damage of the structure by vibration characteristics. And 5), and has been working on the development of a method for identifying vibration characteristics of structures based on vibration characteristics (see Patent Document 2 below).
Japanese Unexamined Patent Publication No. 9-105665 (pages 6-9) JP 2003-315204 A Takeo Suzuki: Judgment of soundness of bridge piers by vibration, Outline of the 6th Annual Scientific Lecture, Japan Society of Civil Engineers, p. 18, 1950. Akihiko Nishimura: Research on soundness evaluation method of ramen viaduct, Railway Research Institute report, Vol. 4, no. 9,1990.9 Yutaka Nakamura: Research on signal earthquake disaster prevention system, Japan Society of Civil Engineers, No. 531 / I-34, pp. 1-33, 1996.1. Fumiaki Kamihan, Kimiro Meguro: A study on the method of determining the immediate earthquake damage of RC structures by nonlinear structural analysis, Applied Mechanics, Vol. 3, pp. 621-628,. 8). Fumiaki Kamihan, Kimuro Meguro: Basic research on damage assessment of steel-reinforced full-scale viaducts, Summary of the 56th Annual Scientific Lecture Meeting (CD-ROM), I-B097, 2001.10.

  The problem with conventional structural vibration measurement using a contact-type vibrometer is that it is necessary to install a vibration measurement sensor on a structure such as a bridge when inspecting the structure using vibration measurement. Is mentioned. When the sensor is installed at a high place, a pinch, etc., it is not easy to install the sensor, which not only requires a lot of work time but also makes it difficult to ensure the safety of the inspection worker. In particular, in the case of inspection of the degree of damage to a structure after an earthquake, the inspection worker is exposed to the risk of a secondary disaster such as collapse of the structure due to an aftershock.

The present applicant has proposed Japanese Patent Application No. 2002-355051 for the purpose of more easily and safely performing the conventional structural vibration measurement.
The present invention facilitates and safely forms a target on the surface of a measurement object necessary for non-contact measurement measurement of vibration characteristics according to this patent application, and increases measurement accuracy by accurately setting the target. With the goal.

  In order to achieve the above object, the present invention has a labeler portion for sticking a sheet-like reflector to an object at the tip of a support rod held by a user, and the labeler portion is attached to the surface of the object. A roller unit that presses the reflector, a surface treatment unit that adjusts the surface of the object to which the reflector is to be attached, and a photographing unit that acquires an image of the surface of the object to which the reflector is to be attached are provided. It is characterized by that.

The present invention also provides an application portion for attaching a paint containing a reflector to an object on the tip of a support rod held by a user, and an area outside the paint adhesion range by the application portion on the surface of the object. A roller unit that makes contact, a surface treatment unit that adjusts a surface of an object to which the paint is to be attached, and a photographing unit that acquires an image of the surface of the object to which the paint is to be attached are provided. .
Further, the invention is characterized in that the surface treatment portion is provided on a surface different from the surface on which the labeler portion or the application portion is provided.

Further, the present invention is characterized in that the photographing unit is provided above the application unit.
Further, the present invention is characterized in that a range in which the reflector is to be pasted and a movement locus of the roller portion overlap each other.
Further, the present invention is characterized in that the paint adhesion range of the application part and the movement locus of the roller part do not overlap.

According to the above configuration, the surface of the object is adjusted to a condition suitable for application or application using the surface treatment unit, and then the roller unit is brought into contact with the surface of the object so that the main body and the surface of the object are aligned. While maintaining the distance appropriately, while observing the surface of the object with the imaging unit, move the main body to the optimal position, attach the label with the labeler unit, or apply the paint with the reflector using the application unit Can be applied. If necessary, the roller portion can press the label against the surface of the object, while the roller portion can be moved without affecting the application surface.
Therefore, according to the present invention, it is possible to safely and easily form a reflector necessary for non-contact vibration measurement on the surface of an object.

Embodiments of the present invention will be described below.
1 to 5 show an embodiment. The code | symbol 13 in FIG. 1 is a structure as a target which forms a reflector. The labeler 1 constituting the main body of the target forming apparatus of the present invention has a reflector 2 (specifically, a label having reflectivity on one surface, and an adhesive material or the like on the other surface. For example, a label sticking device that presses against a product while peeling off a label with an adhesive attached to a tape-like release paper can be applied. The labeler 1 is provided at the tip of an extendable support bar 6 operated by an operator, and is remotely operated by operating an operation panel 8.

Each device provided in the labeler 1 will be described with reference to FIGS.
Reference numeral 3 denotes a camera using a CCD system or the like. The camera 3 captures an image of the surface (target surface) of the structure 13. In the case shown in the drawing, the camera 3 is focused on the front side of the labeler 1 in the sticking direction (the position indicated by the tip of the arrow in FIG. 2) and takes an image of the portion. In addition, a light 4 using an LED or an incandescent bulb is integrally provided on the upper portion of the camera 3, and irradiates a target surface with a light amount necessary for photographing. Note that the shooting angle (shooting direction) may be adjusted by sliding the camera 3 or the like.

  Reference numeral 5 denotes a distance measuring device that measures the height of the labeler 1 using, for example, ultrasonic waves. A brush 7 is provided on a side surface of the labeler 1 (a surface perpendicular to the surface to which the reflector 2 is attached), and the surface to be measured (location to be subjected to vibration measurement) 14 is rubbed with the brush 7. Thus, dust on the surface 14 to be measured and foreign matters such as a release layer can be removed, and the reflector 2 can be reliably attached. Instead of the brush 7, surface treatment means for adjusting the surface state of the measured surface 14, such as a nozzle for spraying a cleaning liquid or the like onto the measured surface 14, may be provided. Further, it is desirable to use an optimum means for forming a necessary surface state depending on whether a label is applied to the surface 14 to be measured or a paint is applied. In any case, it is desirable that the means such as the brush and the cleaning nozzle be provided on a different surface (in a different direction) from the labeler 1 and the camera 3. Can be prevented from adhering to the reflector 2 and the camera 3.

  An operation panel 8 as shown in FIG. 4 is provided at the base end of the support bar 6. On the operation panel 8, a monitor 9 for displaying an image of the camera 3, a switch 10 for operating the distance measuring device 5, a measurement result display unit 11 for displaying a measurement result of the distance measuring device 5, and a labeler 1 are operated. A switch 12 is provided.

Above and below the labeler 1, there are provided rollers 15 that abut the measured surface 14 and maintain the front surface of the labeler 1 at a predetermined distance from the measured surface 14.
The roller 15 is supported via an elastic member such as a spring, and can advance and retreat with respect to the surface 14 to be measured. In addition, when the roller 15 advances and retreats, an appropriate operational feeling (presses the roller 15 against the operator of the support bar 6). Reaction force).

The reflector pasting operation using the sticking device configured as described above is performed as follows.
1. The support bar 6 is extended to reach the vicinity of the surface to be measured 14, the switch 10 is operated to operate the distance measuring device 5, and the support bar 6 is operated so that the height of the surface 14 to be measured becomes a predetermined height. Alternatively, the front surface of the labeler 1 is directed to the surface to be measured 14 by expanding and contracting.
2. An image of the surface is measured by the camera 3 while illuminating the measured surface 14 with the light 4, and this image is displayed on the monitor 9 to observe the surface state.
3. The surface state image is judged, and if necessary, the support rod 6 is turned so that the brush 7 is directed to the surface to be measured 14 to remove dirt and deposits on the surface.
4). After observing the image of the monitor 9 again, confirming that the surface is in an optimum state for application, and further adjusting the position and orientation of the labeler by operating the support bar 6 as necessary, The support bar 6 is operated to position the labeler 1 with respect to the surface 14 to be measured so that the roller 15 is slightly retracted.
5. When the switch 11 is operated, the tip of the labeler 1 protrudes toward the measured surface 14 while supporting the reflector 2, and the reflector 2 is attached to the measured surface 14.
6). After the pasting is completed, the camera 3 is operated as necessary to photograph the pasting state, and is confirmed by the monitor 9.

  Note that it is also effective to provide a roller 15 'having a sufficiently larger width than the range in which the reflector 2 exists, as indicated by a chain line in FIG. That is, after the reflector 2 is pasted by the process of 5 described above, the roller 15 is rolled on the reflector 2 to press the surface, whereby the reflector 2 can be more securely fixed to the measurement surface 14. .

Next, FIG. 6 shows another embodiment.
In this embodiment, instead of the labeler, a paint spraying device including a reflective material is used.
That is, reference numeral 20 denotes a nozzle that sprays paint onto the surface 14 to be measured. In this embodiment, a roller 15 ″ is provided at a position outside the spraying range of the paint sprayed from the nozzle 20.
In this embodiment, a necessary reflector can be formed on the measurement target surface 14 by spraying a paint containing a reflective substance from the nozzle 20. Further, when the coating state of the paint is photographed by the camera 3, even if the roller 15 "is rolled near the surface to be coated, the roller 15" does not touch the painted surface and the coated surface in the semi-dry state is not damaged. .
In addition, the cover which covers the front surface of the camera 3 or the light 4 is provided so as to be openable and closable, and the cover may be closed in conjunction with the spraying of the paint so as to prevent contamination by the scattered paint.

  FIG. 7 shows a modified embodiment. Instead of the support bar 6 for high places in the above-described embodiment, a support bar 6 ′ having another shape for providing a reflector on the lower surface of the bridge girder is provided. . That is, according to the position of the surface to be measured and the surrounding circumstances, a labeler and a coating means having the functions of the above embodiments may be provided at the tip of the support bar 6 'having a required shape and length.

Explanatory drawing of the usage condition of one Embodiment. The side view of one Embodiment. The front view of one Embodiment. The front view of the operation panel of one Embodiment. The front view of one Embodiment. The front view of other embodiment. Explanatory drawing of the usage condition of deformation | transformation embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Labeler 2 Reflector 3 Camera 4 Light 5 Distance measuring device 6 Support bar 7 Brush 8 Operation panel 9 Monitor 13 Structure 14 Surface to be measured
15 15 '15 "roller 20 nozzle

Claims (7)

At the tip of the support rod held by the user,
A labeler portion for attaching a sheet-like reflector to an object;
A roller unit for pressing the reflector attached to the surface of the object by the labeler unit;
A surface treatment unit for adjusting the surface of the object to which the reflector is to be attached;
An imaging unit that acquires an image of the surface of the object to which the reflector is to be attached;
An apparatus for forming a measurement target, comprising: At the tip of the support rod held by the user,
An application section for attaching a paint containing a reflector to an object;
A roller portion that contacts the surface of the object in a region outside the paint adhesion range by the application portion;
A surface treatment unit for adjusting the surface of an object to which the paint is to be applied;
An imaging unit for acquiring an image of the surface of the object to which the paint is to be applied;
An apparatus for forming a measurement target, comprising: The measurement target forming apparatus according to claim 1, wherein the surface treatment unit is provided on a surface different from the labeler unit or the coating unit. The measurement target forming apparatus according to claim 2, wherein the imaging unit is provided above the application unit. The measurement target forming apparatus according to claim 1, wherein a range in which the reflector is to be attached overlaps with a movement locus of the roller portion. The measurement target forming apparatus according to claim 2, wherein a coating adhesion range of the application part and a movement locus of the roller part do not overlap. The measuring target forming apparatus according to claim 1, further comprising a measuring device for measuring the height of the labeler portion.

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