JP2539954Y2 - Reflecting member for surveying - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention, when measuring the distance using a distance measuring theodolite, etc.
The present invention relates to a reflection member arranged at a measurement point, and more particularly to a surveying reflection member capable of forming a line-of-sight portion on the reflection member and collimating the measurement point from a distance measuring theodolite through the line-of-sight portion.

[Prior Art] Conventionally, in general, in order to measure the terrain and the position of an actual object, a horizontal distance, a horizontal angle, and a vertical angle are measured and obtained. In this distance measurement, measurement was performed using a distance measuring theodolite or the like. The distance measurement method using this distance measuring theodolite,
A corner cube A having a shape obtained by cutting off a corner of a cube is disposed as a retroreflective optical member as shown in FIG. 6 at the measuring point, and a light beam from the distance measuring theodolite is reflected by the corner cube, and again the distance measuring theodolite. The phase difference of the light beam that has returned to is measured, and the distance from the phase difference to the measurement point is measured. Since the distance measurement using this ranging theodolite can measure relatively high accuracy with simple work, it can measure not only the conventional terrain and the position of the actual object, but also the measurement of beams and large structures It has also been used for.

"Problems to be solved by the invention" However, the corner cubes used for distance measurement by distance measuring theodolites have a considerable thickness, and cannot be perfectly matched to the measurement target points of bridges and large structures. However, there is a problem that a measurement error occurs due to this.

In addition to corner cubes for retroreflective optical members,
Reflection sheets whose surface is made up of a large number of fine glass beads or prisms are commercially available. It is also conceivable to attach a mark on this reflective sheet and paste it so that the measurement point provided with the marking line etc. and the mark on the reflection sheet match, but hide the marking line at the measurement point with the reflection sheet. Therefore, there is a problem that it is extremely difficult to align the reflection sheet with the measurement point, which causes a measurement error.

Therefore, there has been a strong demand for the appearance of a surveying reflecting member that can accurately measure the distance and angle to a measuring point by a distance measuring theodolite without strictly aligning the measuring point with the reflecting sheet. .

"Means for solving the problem" The present invention has been devised in view of the above problems, and in a sheet-like or plate-like surveying reflection member arranged at a measurement point,
A large number of minute retroreflective optical members arranged on the surface of the surveying reflection member, and formed near the center of the retroreflection optical member, and measuring points of the object to be measured from the surface direction of the surveying reflection member; And a line of sight for direct collimation. The line-of-sight portion may be formed of a hole of the surveying reflection member, or may be formed of a transparent portion of the surveying reflection member.

An adhesive may be applied to the back surface of the surveying reflection member, and the back surface of the surveying reflection member may be configured to have the properties of a magnet. Then, a stud needle may be projected from the back surface of the surveying reflection member.

[Operation] In the present invention configured as described above, a large number of minute retroreflective optical members are arranged on the surface of the surveying reflection member, and the surface of the surveying reflection member is disposed substantially near the center of the retroreflection member. A line-of-sight portion for directly collimating the measurement point of the object to be measured is formed from the direction, and the measurement point can be viewed through the line-of-sight portion. Therefore, the measuring point can be collimated from a distance measuring theodolite at a remote position through the line of sight, and the distance, angle, and the like can be measured.

The line-of-sight portion may be a hole of the surveying reflection member, or may be a transparent portion to be seen through. Then, an adhesive or a stud needle or the like is formed on the back surface of the surveying reflection member, so that the measurement point can be easily fixed. Further, by fixing the back surface of the surveying reflecting member to the characteristics of a magnet, fixing to a ferromagnetic material can be realized.

"Example" An example of the present invention will be described with reference to the drawings. FIG. 1 is a view schematically showing a survey site of a large structure 100. At this survey site, the large structure 100 is measured using the surveying reflection member 1 and the distance measuring theodolite 2. The light from the distance measuring theodolite 2 set at the reference point is reflected by the surveying reflection member 1, and the phase difference of the light returned to the distance measuring theodolite 2 is measured again. The distance from the reflection member 1 is calculated. That is, the measuring point 3 of the large structure 100 is set, the reflecting member for surveying 1 is stuck around the measuring point 3, and the measurement is performed by the distance measuring theodolite 2 having the distance measuring angle measuring function mounted on the reference point. . In the measurement using the distance measuring theodolite 2, the distance and the angle are measured while the measuring point 3 is collimated to the center of the crosshair by the telescope 2a provided in the distance measuring theodolite 2.

Here, the surface 1a of the surveying reflection member 1 facing the distance measuring theodolite 2 will be described with reference to FIG. The surveying reflection member 1 has a line-of-sight portion 11 formed at the center, and a number of minute retroreflection optical members 12 formed on the surface 1a.
The line-of-sight portion 11 of the present embodiment has a through-hole
By forming 12a, it is possible to see through to the back surface side of the surveying reflection member 1. Therefore, the measuring point 3 set on the large structure 100 is transferred to the telescope 2 of the distance measuring theodolite 2.
It can be visually observed by a.

Next, the surface 1a of the surveying reflection member 1 will be described in detail with reference to FIG. The retroreflective optical member 12 formed on the surface 1a of the surveying reflection member 1 has a property that an incident light beam is reflected in a reflection direction R in the same direction as the incident direction I. Here, three types of retroreflective optical members 12 shown in FIGS. 3A to 3C will be described.

The retroreflective optical member 12 shown in FIG. 3 (a) is called a corner cube 12a, and is formed on the surface 1a of the surveying reflective member 1 by a prism member 121 having a plurality of cubic corners cut off.
a, 121a... are uniformly arranged in large numbers. Therefore, the light beam incident on the retroreflective optical member 12 in the incident direction I is reflected inside the prism member 121a and can be reflected in the reflection direction R which is the same direction as the incident direction 1. Note that this prism member 121a can be formed from an acrylic resin or the like.

Next, the retroreflective optical member 12 shown in FIG. 3 (b) is called a glass bead 12b, and a plurality of minute spheres 121b, 121b... Are arranged on the surface 1a of the surveying reflective member 1. is there. The light beam incident on the bead member 121b in the incident direction I is refracted, reflected at the deepest part of the bead member 121b, refracted and reflected again. This reflection direction R is the incident direction I
It is the same direction as. The bead member 121b is not limited to be made of glass, and may be formed of a synthetic resin such as an acrylic resin.

The retroreflection optical member 12 shown in FIG. 3 (c) is obtained by processing the back surface of the surveying reflection member 1 into a prism shape, and this back surface is the same as the corner cube 12a shown in FIG. 3 (a). Similarly, it is configured in a shape in which corners of a cube are cut off. Therefore, the light beam incident on the retroreflective optical member 12 in the incident direction I is reflected by the prism portion 121C formed on the back surface of the surveying reflection member 1, and reflected in the reflection direction R which is the same direction as the incident direction I. Can be.

Note that this prism member 121a can be formed from an acrylic resin or the like.

The retroreflecting member 12 of the surveying reflecting member 1 configured as described above can reflect an incident light beam from the distance measuring theodolite 2 in the same direction and send the reflected light beam to the distance measuring theodolite 2 again.

The line-of-sight portion 11 is not limited to the through-hole portion 11a shown in FIG. 2, but may be a transparent portion 11b shown in FIG. Therefore, the line-of-sight portion in this specification refers to the surveying reflection member 1.
Any means can be used as long as the measuring point 3 of the measured object can be seen from the direction of the surface a. The shape of the line-of-sight portion is preferably a circle from the viewpoint of manufacturing costs, but is not limited to a circle, and may be any shape such as a rectangle and a triangle. The size of the line-of-sight portion 11 can be determined as appropriate. However, if the size is too large, the amount of reflected light decreases and the measurable distance decreases.

Next, the back surface of the surveying reflection member 1 will be described with reference to FIG. The surveying reflection member 1 of the present embodiment is a large structure.
It is configured so that it can be fixed to a measurement point 3 such as 100. In particular, the fixing means 4 can be selected depending on the material near the measuring point 3 of the large structure 100.

On the back surface 1b of the surveying reflection member 1 shown in FIG.
The stud needles 4a, 4b,... Are formed. This is effective when the material of the measuring point 3 is wood, and the surveying reflection member 1 can be fixed to the measuring point 3 by driving the studs 4a, 4a into the wood. The method of fixing the stud with the needle 4a is not limited to wood, but is effective when the material of the measuring point 3 is a relatively soft material.

Next, an adhesive 4b is applied to the back surface 1b of the surveying reflection member 1 shown in FIG. 5 (b), and the surveying reflection member 1 is fixed to the measurement point 3 by the adhesive force of the adhesive 4b. Can be. This fixing method using the adhesive 4b is particularly effective when the measuring point 3 is made of plastic. Note that the adhesive 4b in the present specification is a concept including an adhesive.

Then, the back surface 1b of the surveying reflection member 1 shown in FIG.
Is formed with a film member 4C having a magnet. The film member 4C has the properties of a magnet, and can be easily fixed when the measuring point 3 is a ferromagnetic material (a material that sticks to the magnet). This is particularly effective when the large structure 100 is made of steel such as a needle beam. The conventional mere adhesive sheet cannot be used repeatedly because the bonding ability is reduced. However, in this embodiment using the magnetic film member 4C, there is an effect that it can be used repeatedly.

In the present embodiment configured as described above, the surveying reflection member 1 is fixed to the measurement point 3 of the large structure 100. At this time, the measurement point 3 is attached so that the measurement point 3 can be seen from the line-of-sight portion 11 of the surveying reflection member 1. Next, the measuring point 3 is collimated through the line-of-sight section 11 using the telescope 2a of the distance measuring theodolite 2. In this state, a light beam is emitted from the distance measuring theodolite 2 to the surveying reflection member 1, and is reflected in the same direction by the retroreflective optical member 12 of the surveying reflection member 1. Then, the distance from the reference point to the measurement point 3 can be measured by measuring the reflected light returned by the distance measuring theodolite 2 again.

In this embodiment, since the measuring point 3 can be collimated through the line-of-sight portion 11 of the surveying reflection member 1 by the telescope of the distance measuring theodolite 2, the positioning of the surveying reflection member 1 can be easily performed. This has the effect. Further, there is an effect that the angle can be measured with high accuracy.

In the case of a conventional mere reflection sheet (a sheet without the line-of-sight portion 11), there were cases where accurate measurement was not possible due to easy peeling. However, in the present embodiment, the measuring point 3 was hidden when the surveying reflection member was peeled. This makes it impossible to collimate the measuring point 3 from the line-of-sight portion 11, and it is possible to easily detect the separation.

It is needless to say that the measuring point 3 is not limited to the large structure 100 such as a bridge and can be applied to any object to be measured.

[Effect] The present invention configured as described above has a large number of minute retroreflective optical members arranged on the surface of a surveying reflective member, and is formed near a substantially central portion of the retroreflective optical member. Since it is composed of a line of sight for directly collimating the measurement point of the object to be measured from the surface direction of the reflection member, the measurement point itself of the object to be measured can be measured by a distance measuring theodolite or the like through this line of sight. It has a remarkable effect that collimation can be performed and accurate measurement can be performed without precise alignment with the measurement point itself. In particular, since the measuring point can be directly collimated by a telescope of a distance measuring theodolite, there is an effect that a highly accurate angle measurement can be performed.

That is, the invention of the present application is formed near the center of the retroreflective optical member, and includes a line-of-sight portion for directly collimating the measurement point of the measured object from the surface direction of the surveying reflection member.
When arranging the surveying point, the surveying reflection member can be arranged while observing the measuring point from the “line of sight”.

Therefore, unlike the related art, the present invention does not need to accurately align the actual measurement point with a separately formed collimation point or the like, and collimates the “measurement point” directly through the “line of sight”. be able to. And the invention of the present application does not prevent the actual measurement point and the separate collimation point from being coincident with each other in the vertical direction as in the prior art, and in particular, even in angle measurement, the invention of the present application has an effect that no measurement error occurs. is there.

Furthermore, the invention of the present application, even after arranging the reflecting member for surveying with respect to the measuring point, directly collimates the measuring point through the "line of sight",
There is an effect that angle measurement can be performed. Since the present invention has a "sheet or plate shape" and is thin, the angle range in which the measuring point can be collimated can be widened. Therefore, there is an excellent effect that the position measurement of many measurement points can be performed from one reference point, and the measurement accuracy can be improved.

An adhesive can also be applied to the back surface of the surveying reflection member, and can be easily fixed to a measurement point made of a material such as plastic. In addition, the rear surface of the surveying reflecting member may be configured to have magnetism, which has an effect that it can be easily fixed to a ferromagnetic material and can be used repeatedly. On the back side of the surveying reflection member, a stud needle can also be projected, which has an effect that it can be easily attached to a measuring point made of a soft material such as wood, which is difficult to fix by adhesion or magnetic force. is there.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, FIG. 1 shows a schematic view of a surveying site, FIG. 2 shows a surface of a surveying reflecting member, and FIG. 3 is a view showing a retroreflective optical member, FIG. 4 is a view showing a modified example of a line-of-sight portion of the surveying reflection member, FIG. 5 is a view showing the back surface of the surveying reflection member, and FIG. It is a figure explaining a technique. 1 Reflecting member for surveying 11 Sighting portion 12 Retroreflective optical member 12a Corner cube 121a Prism member 12b Glass bead 121b Bead member 121c Prism section 3 Measurement point 4a … Stack needle 4b… Adhesive 4c… Membrane member 100… Large structure

 ──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A-61-277253 (JP, A) JP-A-60-95566 (JP, U) JP-A-59-34311 (JP, U) JP-A-58 133571 (JP, U)

Claims (6)

(57) [Scope of request for utility model registration] 1. A sheet-like or plate-like surveying reflection member arranged at a measurement point, comprising: a plurality of minute retroreflection optical members arranged on a surface of the surveying reflection member; A surveying reflection member formed substantially near the center and comprising a line-of-sight portion for directly collimating a measurement point of an object to be measured from a surface direction of the surveying reflection member. 2. The surveying reflection member according to claim 1, wherein the line-of-sight portion is formed by a hole of the surveying reflection member. 3. The surveying reflection member according to claim 1, wherein the line-of-sight portion is formed by a transparent portion of the surveying reflection member. 4. The surveying reflection member according to claim 1, wherein an adhesive is applied to a back surface of the surveying reflection member. 5. The reflection member according to claim 1, wherein the back surface of the reflection member has characteristics of a magnet. 6. The surveying reflection member according to claim 1, wherein a stud needle projects from the back surface of the surveying reflection member.