KR101490312B1 - System for surveying earth surface to GPS coordinate of control point by sensing topography change - Google Patents

Abstract

The present invention relates to an observation system surveying and measuring a ground surface in GPS coordinates for each reference point by detecting a topographical change which includes a reference station having an absolute position value, receiving a position value from a satellite to relatively calculate the position value in order to output a compensated GPS value, and outputting the outputted compensated GPS value to the outside by wireless communication; a reference measurer mounted on a tripod to be placed on a measurement point, and having functions of calculating, displaying, and saving an angle, a distance, and coordinates of the measurement point, and wire/wireless communication; and a surveyed data processor receiving the angle, the distance, and the coordinates of the measurement point from the measurement equipment of the reference measurer by wire/wireless communication, wherein the tripod includes an upper end support; three legs having upper ends rotatably coupled to the upper end support to be installed to be opened and closed; a mount coupled to the upper end support to have the measurement equipment mounted; a leg supporter for supporting the legs in opened states; and a means for maintaining a horizontal state of the mount for enabling the mount to automatically maintain the horizontal state, such that the upper surface of the mount maintains the horizontal state by the means for maintaining a horizontal state of the mount when the legs are landed on the ground, and the measurement equipment maintains the horizontal state only by mounting the measurement equipment on the mount after installing the tripod by supporting the legs by the leg supporter, thereby promptly placing the measurement equipment by the tripod and performing the measurement work.

Description

[0001] The present invention relates to an observation system for detecting a change in a geographical feature of a ground surface,

The present invention relates to an observation system for detecting a change in terrain and geodetic surveying the ground surface with reference to the reference point. More particularly, the present invention relates to an observation system for mounting a measuring instrument mount on a tilted surface as well as a horizontal ground. It automatically maintains horizontal level. When the measuring instrument is mounted on the measuring instrument mount, the measuring instrument is automatically leveled even though the horizontal adjustment of the measuring instrument is not performed, so that the mounting and measurement of the measuring instrument by the tripod The present invention relates to an observation system for detecting a change in a terrain so that the ground surface can be quickly moved and measuring the ground surface by geospatial reference points.

Generally, in order to make or correct a digital map used for GPS, it is necessary to take an aerial photograph of a certain area, to produce aerial photograph information by making data of aerial photographs taken, to make a digital map by using it, The air photographing is repeated at regular intervals and corrected using the newly created aerial photographing information.

However, when correcting the digital map, if there is an error in the coordinates of the digital terrain, artifacts, or structures recorded in the digital map and the aerial photograph information, whether there is an error in the existing digital map or there is an error in the newly created aerial photograph information There is a problem that it is difficult to judge.

Therefore, the error should be corrected by measuring the point at which the error occurs. In order to accurately measure the measurement point, measurement equipment is usually used.

The measuring instrument is mounted on a tripod and is mounted on the observation point. The conventional tripod has three legs, an upper frame where the upper ends of the legs are rotatably supported, and a measuring instrument mount .

The legs are configured to be adjustable in length by having an upper leg and a lower leg, and the upper end of the upper leg is rotatably connected to the upper leg so that the legs can be opened and closed.

Measuring instrument on tripod The measuring instrument mounted on the instrument mount shall be kept horizontal to ensure the accuracy of the measurement.

However, in order to maintain the level of the measuring equipment mounted on the measuring device mount, the length of the three legs constituting the tripod must be adjusted individually so that the measuring device mount is roughly horizontal, 4) horizontal adjustment screws, respectively, to adjust the horizontal level of the measuring equipment. Therefore, the leveling of the measuring equipment is troublesome and time consuming.

Therefore, it is necessary to develop an observation system that detects the change in terrain that enables quick and accurate adjustment of the level of the surveying equipment mounted on the tripod mount, and measures the ground surface by geospatial reference point.

Korea Patent Registration No. 10-1217849 (Registered on December 26, 2012) "Reference point geodetic information collection system through terrain change survey" Korea Utility Model Registration No. 20-0372260 (Registered on December 28, 2004) "Tripod for Zip Stereo Survey" Korea Patent Registration No. 10-0288885 (Registered Feb. 12, 2001) "Tripod for surveying equipment"

Therefore, the object of the present invention is to provide a measuring instrument mount which automatically mounts a measuring instrument on a horizontal plane as well as a tilted surface, and when the measuring instrument mount is mounted on a measuring instrument mount, The surveying equipment automatically maintains the horizontal level even if the leveling operation of the measuring equipment is not carried out. Therefore, it is possible to detect the change of the terrain so that the mounting of the measuring equipment by the tripod and the surveying operation can be performed quickly and to measure the ground surface by the reference point- System.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems and needs as described above, and it is an object of the present invention to provide a GPS receiver which receives position values from satellites having absolute position values, A reference station to output; A reference instrument mounted on a tripod and mounted on a measuring point and measuring the angle and distance of the measuring point, calculating and displaying the position coordinates of the measuring point, and a wired / wireless communication function; And a geodesic data processing device for receiving, from a surveying instrument of the reference instrument, an angle and distance measurement of the measurement point and position coordinates of the measurement point,

The tripod,

The apparatus of claim 1, further comprising: a top support; three legs pivotally mounted on the top support pivot so that the top is pivotably connected; a mount coupled to the top support to mount the metering device; And mount horizontal holding means for coupling the mount to the upper support and for automatically maintaining the mount in a horizontal state,

Wherein the upper support comprises three hinge portions each having a hinge hole for rotatably connecting the upper end of the leg at an equal interval,

The hinge unit includes a hinge unit corresponding to the hinge unit and having a hinge part having a hinge hole corresponding to the hinge hole and an upper leg connecting part integrally formed at a lower portion of the hinge part and having an upper leg connecting groove, An upper leg having a pair of upper leg members which are inserted into the upper leg connecting grooves of the hinge member in a spaced manner with a space therebetween and slidably inserted between the pair of upper leg members; A leg connecting ring fixed to a lower end of the upper leg member and configured to allow a lower leg to pass therethrough, and a lower leg connected to the upper leg member, A lower leg member, a lower leg member, and a lower leg member; And Mi Heng comprises a landing member comprising land portion,

Wherein the mount horizontal holding means comprises a three-dimensional rotating support body fixed to the center of the upper surface of the upper support frame and having a spherical outer peripheral surface, and a spherical inner peripheral surface fixed to the center of the lower surface of the mount and corresponding to a spherical outer peripheral surface of the three- Dimensional restoring screw for restricting the rotation of the three-dimensional rotary body with respect to the three-dimensional rotary supporting body by screwing the three-dimensional rotary body with the three-dimensional rotary body; Three horizontal holding bars extending horizontally to the same length, three vertical holding rods vertically coupled to ends of the horizontal holding bars and extending downward to the same length, and three vertical holding rods connected to the lower ends of the vertical holding rods, And a geodetic surveying system for geodetic surveying of the surface of the ground with reference to the reference point.

According to the present invention, a reference station having an absolute position value and receiving a position value from a satellite and performing a mutual calculation thereof to output a GPS correction value and wirelessly outputting the output GPS correction value; A reference instrument mounted on a tripod and mounted on a measuring point and measuring the angle and distance of the measuring point, calculating and displaying the position coordinates of the measuring point, and a wired / wireless communication function; And a geodesic data processing device for receiving, from a measuring instrument of the reference instrument, an angle and a distance measurement of the measurement point and a position coordinate of the measurement point, the tripod being composed of an upper support and an upper end rotatably mounted on the upper support A bridge supporting means for supporting the legs in a flared state; and a bridge holding means for holding the legs in an automatically horizontal state The upper surface of the mount is held horizontally by the mount horizontal holding means, the tripod is mounted by supporting the leg by the leg supporting means, and then the measuring device So that the surveying equipment is held horizontally and the measurement by the tripod It is possible to quickly carry out the mounting and measurement of the equipment.

FIGS. 1 to 9 show a preferred embodiment of an observation system for detecting a change in the terrain according to the present invention and measuring the ground surface by geodesic coordinates at reference points,
1 shows a system of the present invention,
2 is a side view of the level meter,
3 is an exploded perspective view of a tripod,
4 is a perspective view showing a state in which a leg of a tripod is folded,
5 is a perspective view showing a state in which a leg of a tripod is opened,
6 and 7 are perspective views showing a process of mounting the tripod on a ground,
FIG. 6 is a perspective view showing a state in which a tripod with a three-dimensional pivotal member released from its fixation and landed on a tilted ground is shown,
FIG. 7 is a perspective view showing a state in which a three-dimensional rotational body automatically held horizontally is fixed,
8 and 9 are longitudinal side views showing a process of installing a tripod on a ground,
Fig. 8 is a longitudinal side view showing a state in which a tripod, which has been released from the three-dimensional pivotal body and is opened,
9 is a longitudinal side view showing a state in which a three-dimensional rotational body that is held horizontally is fixed automatically.

Hereinafter, a preferred embodiment of a surveying system for detecting a change in the terrain according to the present invention and measuring the ground surface with reference to the reference point is described in detail with reference to the accompanying drawings.

In the following description, the holes through which the screws are inserted for coupling the components and the screw holes to which the screws are fastened are shown in the drawings, but the reference numerals and explanations are omitted.

The observation system for detecting the change of the terrain according to the present invention and measuring the ground surface by geospatial coordinates according to the reference point has an absolute position value and receives position values from the satellite (G) A reference station (A) for outputting the output value and wirelessly outputting the output GPS correction value; A reference instrument (B) having an angle and distance measurement of the measurement point, a function of calculating, displaying and storing the position coordinates of the measurement point, and a wired / wireless communication function; And a geodesic data processing device (C) for receiving, from the measuring equipment (T) of the reference instrument (B), the angle and distance measurement of the measurement point and the position coordinates of the measurement point. The measuring equipment T may include a total station.

The reference station A includes a GPS receiver A1 having a GPS antenna A1a for receiving a position value from the satellite G and a GPS receiver A1 for comparing the current position value and the stored absolute value received from the GPS receiver A1, And a DGPS transmitter A3 having a DGPS antenna A3a for receiving the GPS correction value from the controller A2 and wirelessly transmitting the corrected GPS correction value to the outside.

In this embodiment, the GPS correction value (i.e., position value) calculated through the control unit A2 of the reference station A is transmitted from the DGPS transmitter A3 and transmitted through the DGPS antenna A3a connected to the DGPS transmitter A3 To the DGPS antenna of the measurement equipment T, which will be described later.

The reference instrument B comprises a tripod Tp and a measuring instrument T mounted on a tripod Tp.

The measuring equipment T calculates the GPS correction value received from the reference station A and the GPS value received from the satellite G to confirm its own precision position and calculates the coordinates of the measurement point based on the precision position And transmits the angles and distances of the measurement points in a wired or wireless manner for precise measurement.

The measurement equipment T includes a GPS receiver T1 having a GPS antenna T1a for receiving a current position value from a satellite G and a DGPS antenna T3a for receiving a current position value from a satellite G, A DGPS receiver T3 that receives a GPS correction value from the A3 and a lens unit L on one side to measure the angle and distance of the measurement point precisely, T3 to confirm the precise position of the measuring equipment T by precise distance calculation of the GPS antenna T1a and to calculate the angle and distance of the measuring point measured by the measuring unit T4 (T2) for calculating the position coordinates of the measurement point with reference to the precise position, receiving the position coordinates of the measurement point and the angle of the measurement point calculated by the control unit (T2) And a data transmitter T5.

The measuring equipment T has a leveling screw S for mounting on a tripod Tp.

Since the surveying equipment T is a surveying instrument that is commonly used in geodetic surveying, a detailed description of other structures will be omitted.

The reference instrument B is placed at an arbitrary measurement position c by the surveying operator and the first reference point a and the second reference point b are set in advance, And sends the data of the first reference point a and the second reference point b to the geodetic data processing device C via the data transmitter T5 of the surveying equipment T. [

The geodetic data processing device C is a device for processing the geodetic data of the second reference point b or the first reference point a via the data received from the reference instrument B provided at the first reference point a or the second reference point b. It can be confirmed that the coordinates are the same as the existing coordinates.

If the coordinates of the first reference point a or the second reference point b are the same as those of the existing coordinates, the geodetic data processing apparatus C determines that the first reference point a and the second reference point b are changed It is judged that it has not occurred.

Therefore, the geodetic data processing apparatus C confirms the coordinates of the first reference point a or the second reference point b located from the reference instrument B installed at the measurement position c, Or there is no change in the second reference point (b), the measurement position (c) is not set to a place where re-survey is required.

The geodetic data processing apparatus C confirms the coordinates of the first reference point a or the second reference point b located at the reference instrument B provided at the measurement position c to determine whether the first reference point a or If there is a change in the second reference point (b), the measurement position (c) is set to a position where re-measurement is required.

On the other hand, the geodetic data processing apparatus C may be configured such that the coordinates of the first reference point a or the second reference point b located at the first reference point a or the second reference point b, The geodesic data processing device C determines that a change has occurred in the first reference point a or the second reference point b.

Therefore, the geodetic data processing apparatus C can obtain the first reference point (a) and the second reference point (b) through the coordinates of the first reference point a or the second reference point b located at the reference instrument B installed at the measurement position c. (B), and a point where a change in the first reference point (a) and the second reference point (b) occurs is set to a point where re-survey is required.

At this time, when the coordinates of the first reference point a or the second reference point b located at the reference instrument B installed at the measurement position c are all changed, it is determined that the first reference point a, the second reference point b, and the measurement position c are set to the locations where re-survey is required.

The tripod (T) constituting the reference instrument (B) comprises an upper support (10); Three legs (20) mounted on the upper support (10) such that the upper end thereof is rotatably coupled and opened and closed; A metering device mount (30) coupled to the upper support (10) and mounted with a metering device (T); And mount horizontal holding means 40 for coupling the measuring device mount 30 to the upper support 10 and for automatically maintaining the measuring device mount 30 in a horizontal state.

The upper support 10 includes three hinge portions 11 each having a hinge hole 11a for rotatably connecting the upper end of the leg 20 at regular angular intervals.

The legs 20 are integrally formed at the lower portion of the hinge portion 22 with a hinge portion 22 corresponding to the hinge portion 11 and having a hinge hole 22a corresponding to the hinge hole 11a A hinge member 21 having an upper leg connecting portion 23 provided with an upper leg connecting groove 23a,

A hinge pin 24 for connecting the hinge portions 11 and 22 so as to be rotatable relative to each other and a pair of upper leg members 22a and 22b which are inserted into the upper leg connecting groove 23a of the hinge member 21, A lower leg 26 having a lower leg member 26a slidably inserted between the pair of upper leg members 25a and an upper leg member 25a having an upper leg member 25a A leg connecting ring 27a fixed to the lower end of the upper leg member 25a and screwed to the leg connecting ring 27a so as to penetrate through one of the upper leg members 25a, A leg engagement hole 27 provided with a leg engagement screw 27b which is in close contact with the outer surface of the lower leg member 26a and a lower end sharp edge 28a coupled to the lower end of the leg leg 26a And a landing member (28).

The upper leg member 25a is formed in a circular cross section and the lower leg member 26a is formed in a shape having both side circular arc surfaces corresponding to the outer peripheral surface of the upper leg member 25a, It is preferable that the lower leg members 26a are slidable without any disengagement between the pair of upper leg members 25a by the two side circular arc surfaces of the lower leg members 26a.

The upper leg member 25a and the lower leg member 26a are preferably formed in a pipe shape to minimize the weight of the entire tripod.

A finishing cap 26b is coupled to the upper end of the lower leg member 26a. The finishing cap 26b has an insertion portion 26c to be inserted into the upper end of the lower leg member 26a formed in the shape of a pipe and a lower end portion 26c to be connected to the upper end of the insertion portion 26c corresponding to the outer shape of the lower leg member 26a And a finishing portion 26d formed so as to have an outer shape. The finishing cap 26b can be fixedly coupled to the upper end of the lower leg member 26a by inserting the inserting portion 26c into the upper end of the lower leg member 26a, The screw 26e passing through the upper end of the lower leg member 26a may be coupled to the finishing cap 26b.

The leg linking ring 27a is formed in a long circular shape or a long cylindrical shape to enclose the lower end of the upper leg member 25a and is provided with a nut portion 27c for fastening the leg engagement screw 27b. The nut portion 27c can be formed by inserting a nut in the process of molding the leg linking ring 27a into a synthetic resin.

It is preferable that the leg engagement screw 27b is a butterfly screw having a butterfly knob to be able to rotate without a separate tool.

The leg linking ring 27a is fixed to the lower end of the upper leg member 25a by screwing or tightening the screw 27d passing through the opposite side of the nut portion 27c to the outer peripheral surface of the lower end of the upper leg member 25a Can be combined.

When the lower leg member 26a is formed in the shape of a pipe, the landing member 28 is fixed to the lower leg member 26a by inserting an insertion portion 28b to be inserted into the lower end of the lower leg member 26a, 28c can be engaged with the lower end of the lower leg member 26a. When the lower leg member 26a is formed in the shape of a bar, a socket-type engaging portion is formed to be fitted to the lower end of the lower leg member 26a. The lower end portion of the lower leg member 26a is inserted into the socket- The landing member 28 can be coupled to the lower end of the lower leg member 26a by screwing the screw to the lower end of the lower leg member 26a. However, in order to reduce the weight of the entire tripod, it is preferable to form the lower leg member 26a in the form of a pipe.

The landing member 28 is horizontally extended between the lower-end pointed hemispherical landing portion 28a and the insertion portion 28b so that the measurement worker (machine water) is stepped on, so that the lower-end pointed hemisection- It is preferable that the foot rest 28d is provided.

The measuring instrument mount 30 is formed in a right triangular shape in which the vertexes are rounded and has three measuring instrument mounting holes 31 for mounting the measuring instrument T at the same distance on the line connecting the vertexes ) Is preferably used. However, any one of the existing mounts can be selected according to the type of the measurement equipment T to be mounted.

The mount horizontal holding means 40 includes a three-dimensional turning support body 41 fixed to a center of the upper surface of the upper support frame 10 and having a spherical outer peripheral surface 41a,

A three-dimensional rotating body (42) fixed to a lower center of the measuring instrument mount (30) and having a spherical inner peripheral surface (42a) corresponding to a spherical outer peripheral surface (41a) of the three dimensional rotating supporting body (41) A three-dimensional rotation restricting screw 43 screwed to the moving body 42 to regulate the rotation of the three-dimensional rotating body 42 with respect to the three-dimensional rotating supporting body 41; Three horizontal holding bars 44 extending horizontally to the same length while being spaced at 120 degree angles from each other at the fulcrum portion and three horizontal holding bars 44 vertically coupled to the ends of the horizontal holding bar 44 and extending downward to the same length Vertical holding rods 45 and three counterweight 46 which are respectively coupled to the lower ends of the vertical holding rods 45. [

The three-dimensional turning support body 41 is screwed to the center of the lower surface of the upper end of the threaded rod 41b to which the lower end is threaded at the center of the upper end support. A lock nut 41c is fastened to the lower end of the threaded rod 41b so as to be in close contact with the upper surface of the upper support rod 10 in order to prevent the threaded connection between the lower end of the threaded rod 41b and the upper support rod 10, do.

The three-dimensional rotary body 42 is divided into a pair of front and rear half members so that the front half and the rear half of the spherical inner peripheral surface 42a are formed in each half member, and one of the half members It is possible to construct the three-dimensional rotary body 42 integrated by fastening the screw 42b horizontally passing through the other half member (the half member on the rear side in the figure) to the half member on the other side.

The three-dimensional rotary body 42 is integrally formed with the metering device mount 30 by fastening the screw 42c passing through the measuring device mount 30 from the top to the bottom thereof to the upper surface of the three- .

The three-dimensional rotation restricting screw 43 is horizontally screwed to a screw hole 43a formed in one half member (a front half member in the figure) of the half member of the three-dimensional rotary member 42. [ When the three-dimensional rotation restricting screw 43 is tightened, its tip is brought into close contact with the spherical outer peripheral surface 41a of the three-dimensional rotatably supporting body 41 so that the three-dimensional rotatable body 42 is rotated three- When the three-dimensional rotation restricting screw 43 is loosened, the tip of the three-dimensional rotation restricting screw 43 is separated from the spherical outer peripheral surface 41a of the three-dimensional rotatably supporting body 41 so that the three- The three-dimensional rotation can be performed.

It is preferable that the three-dimensional rotation restricting screw 43 is a butterfly screw having a butterfly knob to be able to rotate without a separate tool.

The horizontal holding bar 44 and the vertical holding bar 45 are screwed into the screw hole 44a formed in the horizontal holding bar 44 from below to the upper holding bar 45, They can be combined with each other.

The resin holding bar 45 and the counterweight 46 may be integrally formed as shown in the drawing. A male screw portion (not shown) may be formed at the lower end of the vertical holding bar 45, (Not shown) formed at the center thereof.

Hereinafter, the operation of the observation system for detecting the change of the terrain according to the present invention and measuring the surface of the ground surface by the reference point-based geodesic coordinates will be described.

First, a process of adjusting the length of the leg 20 will be described.

The lower leg member 26a is pulled or pushed up in a state in which the leg engagement screw 27b fastened to the nut portion 27c of the leg linking ring 27a fixedly connected to the lower end of the upper leg member 25a is loosened The length of the leg 20 composed of the upper leg 25 and the lower leg 26 can be adjusted to be long or short. When the length of the leg 20 is adjusted, the front end of the leg engagement screw 27b is tightened against the side surface of the lower leg member 26a when the leg engagement screw 27b is tightened, Is fixed to a state in which it can not be arbitrarily elongated or shortened.

Next, a process of opening or folding the legs 20 will be described.

4, when the respective legs 20 are pulled in the direction in which the three legs 20 are folded in a straight line, the hinge member 21 coupled to the upper end of the upper leg 25, The leg 20 is pivoted outward with respect to the hinge pin 11 with respect to the hinge pin 24 so that the leg 20 is opened as shown in Fig.

5, when the respective legs 20 are pushed in the folding direction in the state where the three legs 20 are open, the hinge member 21 coupled to the upper end of the upper leg 25 is pushed by the upper support pedestal 10 The hinge pin 11 is pivoted inward with respect to the hinge pin 24 so that the leg 20 is folded as shown in Fig.

Next, explain how to mount the tripod on the ground.

The bottom edge 29a of the landing member 28 provided at the lower end of the lower leg 26 is landed on the ground as shown in Fig. At this time, the lower end of the lower-end pointed hem portion 28a may be merely put on the ground, or the lower end of the lower-end pointed hem portion 28a may be mounted on the ground.

In the case where the lower-end pointed hem portion 28a is stuck in the ground state, the worker (machine) can step on the foot rest 28d so that the lower-end pointed hem portion 28a can be stuck to the ground.

Next, the process of automatically holding the measuring instrument mount 30 horizontally will be described.

When the three-dimensional rotation restricting screw 43 of the mount horizontal holding means 40 is loosened while the tripod is mounted on the ground surface, the three-dimensional rotation restricting screw 43, which is in close contact with the spherical outer peripheral surface 41a of the three- The rotary shaft 43 is separated from the spherical outer peripheral surface 41a of the three-dimensional rotary supporting body 41 so that the three-dimensional rotary body 42 can rotate three-dimensionally with respect to the three-

At this time, the three-dimensional rotating body 42 is fixed to the lower surface of the measuring instrument mount 10. At the ends of the three horizontal holding bars 44 formed at the three vertexes of the measuring instrument mount 30, Since the counterweight 46 is coupled to the lower ends of the vertical holding rods 45, the vertical holding rods 45 are held vertically by the action of the three counterweight 46 The horizontal holding bar 44 coupled to the vertical holding bar 45 is kept horizontal and the measuring device mount 30 in which the horizontal holding bar 44 is integrally joined remains horizontal.

When the three-dimensional rotation restraining screw 43 is tightened in this state, its tip is brought into close contact with the spherical outer peripheral surface 41a of the three-dimensional rotatably supporting body 41 so that the three- Dimensional rotation of the three-dimensional rotating body 41 and the upper surface of the measuring instrument mount 30 are maintained in a horizontal state.

When the surveying instrument T is mounted on the upper surface of the measuring instrument mount 30 held in the horizontal state in this way, the measuring instrument T is also leveled, so that a separate operation for maintaining the leveling of the surveying instrument T The leveling of the measuring equipment T is maintained.

That is, the measuring equipment T is mounted on the measuring instrument mount 30 and the tripod Tp is fixed by fastening the horizontal adjusting screw S to the measuring instrument mounting hole 31 formed in the measuring instrument mount 30, And then horizontally maintained without a horizontal adjustment operation using the horizontal adjustment screw S.

Thus, the surveying operator (machine number) can start the surveying operation immediately after mounting the measuring equipment (T) on the tripod and mounting the measuring instrument mount (30).

In this case, if the length of the three legs 20 is adjusted to be exactly the same, horizontal holding operation by the mount horizontal holding means 40 becomes unnecessary. However, 20, it is practically impossible to control the length of the measuring instrument mount 30 so that it can not be maintained even when the tripod is landed on the ground.

Therefore, as shown in Fig. 5, when the tripod is mounted on a horizontal ground, the horizontal holding operation by the mount horizontal holding means 40 as described above can be carried out by inclining the tripod It will be said that the same is true for the case of mounting on the ground.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

10: upper support 11: hinge
20: leg 21: hinge member
25: upper leg 26: lower leg
27: leg joint 28: landing member
30: mount 40: mount horizontal holding means
41: three-dimensional turning support body 41a: spherical outer peripheral surface
42: three-dimensional rotating body 42a: spherical inner peripheral surface
43: three-dimensional rotation control screw 44: horizontal holding bar
45: vertical holding rod 46:

Claims (1)

A reference station (A) having an absolute position value and receiving a position value from the satellite (G), calculating the coordinates of the position, outputting a GPS (satellite positioning system) correction value, and outputting the outputted GPS correction value to the outside; (B) a reference instrument (B) mounted on a tripod (Tp) and mounted on a measuring point and measuring the angle and distance of the measuring point, calculating and displaying the position coordinates of the measuring point, and a wired / wireless communication function; And a geodesic data processing device (C) for receiving, from the measuring equipment (T) of the reference instrument (B), the angle and distance measurement of the measurement point and the position coordinates of the measurement point,
The tripod (Tp)
The upper support 10 includes three legs 20 installed on the upper support 10 so that the upper end of the upper leg 10 can be pivotally connected to the upper support 10, A mount 30 mounted on the base 30; And mount horizontal holding means (40) for coupling the mount (30) to the upper support (10) and for automatically maintaining the mount (30) in a horizontal state,
The upper support 10 includes three hinge portions 11 each having a hinge hole 11a for rotatably connecting the upper end of the leg 20 at regular angular intervals,
The leg 20 has a hinge portion 22 corresponding to the hinge portion 11 and having a hinge hole 22a corresponding to the hinge hole 11a and a hinge portion 22 formed integrally with the lower portion of the hinge portion 22 A hinge member 21 having an upper leg connecting portion 23 provided with an upper leg connecting groove 23a, a hinge pin 24 connecting the hinge portions 11 and 22 in a relatively rotatable manner, An upper leg 25 provided with a pair of upper leg members 25a which are inserted into the upper leg connecting grooves 23a of the lower leg member 21 at intervals with a gap therebetween, A leg connecting ring 27a fixed to the lower end of the upper leg member 25a and configured to allow the lower leg 26 to pass therethrough, The upper leg member 25a is threadedly engaged with the leg linking ring 27a so that its tip is in close contact with the outer surface of the lower leg member 26a And a landing member 28 coupled to the lower end of the lower leg member 26a and having a lower end pointed landing portion 28a, And,
The mount horizontal holding means 40 includes a three dimensional rotating support body 41 fixed to the center of the upper surface of the upper support frame 10 and having a spherical outer peripheral surface 41a, A three-dimensional rotary body 42 having a spherical inner peripheral surface 42a corresponding to the spherical outer peripheral surface 41a of the three-dimensional rotary supporting body 41; Dimensional rotating regulating screw 43 for regulating the rotation of the three-dimensional rotating body 42 with respect to the three-dimensional rotating body 42, Three vertical holding rods 45 vertically coupled to the ends of the horizontal holding bars 44 and extending downward to the same length and four vertical holding rods 45 extending downward from the vertical holding rods 45 And three counterweights (46) coupled to the lower ends of the ground points, An observation system that measures the surface of a surface with a grid.

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