Three-dimensional laser scanning and total station share target ball coordinate measuring device

Abstract

The utility model relates to three -dimensional laser scanning technical field especially relates to three -dimensional laser scanning and total station common target ball coordinate measuring device, include: fixed platform for providing stable support and realizing horizontal calibration, target ball body sets up at the surface of fixed platform, and the spherical surface has integrated collinear optical reflection subassembly, overhanging telescopic measuring scale sets up at the bottom of fixed platform, the utility model discloses through setting up fixed platform, collinear optical reflection subassembly, mounting base, overhanging telescopic measuring scale and target ball body, form the vertical mapping channel of prism center, target ball center point and ground point to obtain the ball center point coordinate, improve target ball layout installation's topographic condition adaptability, avoid the shielding influence of ground surface sundries and improve the stability of spherical body placement, and the leg frame layout of wide area improves the gradient adaptability.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional laser scanning technology, and in particular to a target sphere coordinate measuring device shared by three-dimensional laser scanning and total station. Background Technology

[0002] Besides stitching together point cloud data, 3D laser scanning spherical targets sometimes require precise alignment of the point cloud data projection with an existing coordinate system. This necessitates on-site measurements to obtain the absolute coordinates of the target sphere's center with high accuracy. When measuring the center coordinates of a spherical target, the sphere must first be removed, and other instruments or equipment used for measuring ground point coordinates must be placed on top, then the target sphere's radius added. Directly obtaining the target sphere's center coordinates is not feasible due to multiple indirect steps and the risk of misalignment and human error from placing the target sphere directly on the ground. Furthermore, directly placing the sphere on the ground is unstable and easily affected by terrain conditions and surface obstructions, impacting subsequent operations. Utility Model Content

[0003] The purpose of this invention is to provide a target ball coordinate measuring device that can be used for both 3D laser scanning and total station. This solves the problems of the target ball being unstable when placed directly on the ground and being easily restricted by terrain conditions, the influence of ground objects, and the need to change the target or equipment used by different instruments when measuring the absolute coordinates of the target ball center in the field, making it impossible to directly collect the coordinates of the target ball center point.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A target sphere coordinate measuring device shared by a 3D laser scanner and a total station includes: a fixed platform for providing stable support and achieving horizontal calibration; a target sphere body disposed on the surface of the fixed platform, with a collinear optical reflection component on the top of the target sphere body; a suspended telescopic measuring scale disposed at the bottom of the fixed platform; and a mounting base disposed on the surface of the fixed platform for mounting the target sphere body and the suspended telescopic measuring scale.

[0006] Preferably, the fixed platform includes: an equilateral triangular platform; three retractable support legs vertically fixed below the three corners of the platform, with the middle sections of adjacent legs connected by a stabilizing rod; a foot screw is provided at the connection between the top of the legs and the platform, and the fixed platform can be horizontally adjusted by adjusting the foot screw; a tubular level is provided on the surface of the platform in a dual-axis vertical direction to assist in judging the horizontal state of the fixed platform; and a through opening is provided in the center of the platform.

[0007] Preferably, the collinear optical reflection assembly includes: a manually screw-in disc head; a threaded interface for docking with the target sphere body; a reduced-size prism; and a reduced-size external sign. The collinear optical reflection assembly is connected through the top interface of the target sphere body, and the upper and lower interfaces of the target sphere body are collinear with the center of the sphere, so as to achieve collinearity between the center of the prism and the center of the target sphere.

[0008] Preferably, the upper surface of the mounting base has a threaded interface two at its center for connecting and mounting the target ball body; a laser emitter switch is located on the outer side of the upper surface, and a braking knob is located on the side; the lower surface has a threaded interface three at its center for connecting the suspended telescopic measuring ruler; a laser emitter is located at the center of the bottom, and the laser emitter is located inside the suspended telescopic measuring ruler; the laser emitter switch is used to control the turning on and off of the laser emitter, and the braking knob is used to lock the position of the mounting base.

[0009] Preferably, the suspended telescopic measuring ruler consists of two hollow tube sections, through which the light from the top laser emitter passes; a miniature locking bead is provided between the two hollow tube sections, and a button for controlling the locking bead is provided at the ground end of the last section; the surface of the measuring ruler is marked with graduations; by operating the button to control the miniature locking bead, the telescopic adjustment of the measuring ruler is realized, and the measured length is read through the surface graduations; the top of the suspended telescopic measuring ruler is connected to the mounting base through the threaded interface three.

[0010] Preferably, the top of the mounting base is connected to the target ball body, the bottom is connected to the suspended telescopic measuring ruler, and the collinear optical reflection component is connected to the top of the target ball body, forming a vertical mapping channel between the prism center, the target ball center point, and the ground point.

[0011] This utility model has at least the following beneficial effects:

[0012] By setting up a fixed platform, collinear optical reflection components, mounting base, suspended telescopic measuring ruler, and target ball body, the adaptability of the target ball to terrain conditions is improved, the obstruction of ground debris is avoided, and the stability of the ball placement is improved. The wide-area leg deployment improves slope adaptability and can assist in field operations to collect the absolute coordinates of the target ball's center point and the corresponding ground point. The total station's on-site target ball center point absolute coordinate measurement and 3D laser scanning can share this target device, simplifying the indirect steps of installing and removing the total station target prism and then installing the target ball for scanning operations when measuring on-site points with the total station. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the platform structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the prism structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the laser emitting lamp of this utility model;

[0018] Figure 5 This is a schematic diagram of the threaded interface structure of this utility model.

[0019] In the diagram: 100, fixed platform; 110, platform; 120, leg support; 130, stabilizer bar; 140, foot screw; 150, tubular level; 160, through opening;

[0020] 200. Collinear optical reflection assembly; 210. Pan head; 220. Threaded interface one; 230. Prism; 240. Sign;

[0021] 300. Mounting base; 310. Threaded interface two; 320. Laser emitter switch; 330. Brake knob; 340. Threaded interface three; 341. Laser emitter lamp;

[0022] 400. Suspended telescopic measuring ruler; 410. Miniature positioning bead; 420. Button; 430. Scale; 500. Target ball body. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Reference Figure 1-5 The three-dimensional laser scanning and total station share a target ball coordinate measuring device, including: a fixed platform 100 for providing stable support and achieving horizontal calibration; a target ball body 500 disposed on the surface of the fixed platform 100, with a collinear optical reflection component 200 on the top of the target ball body 500; a suspended telescopic measuring ruler 400 disposed at the bottom of the fixed platform 100; and a mounting base 300 disposed on the surface of the fixed platform 100 for mounting the target ball body 500 and the suspended telescopic measuring ruler 400.

[0026] Furthermore, the fixed platform 100 includes: an equilateral triangular platform 110; three retractable support legs 120 vertically fixed below the three corners of the platform 110, with the middle sections of adjacent legs 120 connected by a stabilizing rod 130; a foot screw 140 is provided at the connection between the top of the legs 120 and the platform 110, and the fixed platform 100 can be horizontally adjusted by adjusting the foot screw 140; a tubular level 150 with a dual-axis vertical direction is provided on the surface of the platform 110 to assist in judging the horizontal state of the fixed platform 100; and a through opening 160 is provided in the center of the platform 110.

[0027] Furthermore, the collinear optical reflection assembly 200 includes: a manually screw-in disc head 210; a threaded interface 220 for docking with the target sphere body 500; a scaled-down prism 230; and a scaled-down external marker 240. The collinear optical reflection assembly 200 is connected through the top interface of the target sphere body 500, and the upper and lower interfaces of the target sphere body 500 are collinear with the center of the sphere, so as to achieve that the center of the prism 230 and the center of the target sphere are collinear.

[0028] Furthermore, the mounting base 300 has a threaded interface 310 at the center of its upper surface for connecting and mounting the target ball body 500; a laser emitter switch 320 is located on the outer side of the upper surface, and a brake knob 330 is located on the side; a threaded interface 340 is located at the center of the lower surface for connecting the suspended telescopic measuring ruler 400; a laser emitter lamp 341 is located at the center of the bottom, and the laser emitter lamp 341 is located inside the suspended telescopic measuring ruler 400; the laser emitter switch 320 is used to control the opening and closing of the laser emitter lamp 341, and the brake knob 330 is used to lock the position of the mounting base 300.

[0029] Furthermore, the suspended telescopic measuring ruler 400 consists of two hollow tube sections, through which the light from the top laser emitting lamp 341 passes; a miniature locking bead 410 is provided between the two hollow tube sections, and a button 420 for controlling the locking bead is provided at the ground end of the last section; the surface of the measuring ruler is marked with graduations 430; by operating the button 420 to control the miniature locking bead 410, the telescopic adjustment of the measuring ruler is realized, and the measured length is read through the surface graduations 430; the top of the suspended telescopic measuring ruler 400 is connected to the mounting base 300 through the threaded interface 340.

[0030] Furthermore, the top of the mounting base 300 is connected to the target ball body 500, and the bottom is connected to the suspended telescopic measuring ruler 400. The collinear optical reflection component 200 is connected to the top of the target ball body 500, forming a vertical mapping channel between the center of the prism 230, the center point of the target ball, and the ground point.

[0031] In summary, Scenario 1:

[0032] In scenarios requiring the absolute coordinates of a target ball, where there are no known points on the field but points within a certain distance, the process involves: entering the work area, marking the target point, and then selecting the marked point location to install the auxiliary device. Centering is achieved by activating the laser emitter button 420, leveling is accomplished using the telescopic leg bracket 120 and the micro-adjustment screw 140, and the target ball body 500 and collinear optical reflection component 200 are assembled. The entire assembly is then connected to the interface of the platform 110 of the fixed stand 100. The leveling and centering are further refined using the screw 140 and the mounting base 300, and the brake knob 330 on the target ball mounting base 300 is tightened. Next, the button 420 at the near-ground end of the suspended telescopic measuring ruler 400 is pressed, causing the ruler 400 to automatically slide down in the suspended direction and land on the ground mark. The suspension distance from the center of the target ball body 500 to the ground point is obtained by reading the scale 430 at the near-ground end of the ruler 400. The planar coordinates of the center point of the target sphere 500 are obtained by aiming the total station at the center of the collinear optical reflector 200 prism 230. The elevation of the ground point is then calculated by adding the near-ground terminal reading of the suspended telescopic measuring ruler 400 and the corresponding radius of the sphere. After the measurement is completed, there is no need to remove the device and reinstall the target sphere 500; scanning can be performed directly using a 3D laser scanning device.

[0033] Implementation Scenario 2:

[0034] The target ball requires absolute coordinates. There are known points within the work area, but the ground conditions are poor, with an uneven surface and obstructions such as grass. Upon entering the work area, the auxiliary device is placed at a known point location. The height of the leg support 120 is adjusted to avoid interference from ground features. After stabilizing the fixed platform 100, the laser emitter button 420 is activated for centering. Leveling is achieved using the telescopic leg support 120 screw and the micro-adjustment foot screw 140. There is no need to assemble the collinear optical reflection component 200 on the target ball body 500; the target ball body 500 is directly installed on the fixed platform 100. Fine leveling and centering are then performed again using the foot screw 140 and the sliding mounting base 300, and the brake knob 330 on the mounting base 300 is tightened. Then, manually press the button 420 at the near-ground end of the suspended telescopic measuring ruler 400. The measuring ruler will then slide down automatically and land on the ground marker. The suspended distance from the center of the target sphere 500 to the ground marker is obtained by reading the scale 430 at the near-ground end of the measuring ruler. The elevation of the known point, plus the reading at the near-ground end of the suspended telescopic measuring ruler 400 and the radius of the corresponding sphere used, gives the elevation of the sphere's center point. The known plane coordinates of the ground marker are the plane coordinates of the target sphere's center point.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A target sphere coordinate measuring device shared by a three-dimensional laser scanner and a total station, characterized in that, include: A fixed platform (100) is used to provide stable support and achieve horizontal calibration; The target ball body (500) is disposed on the surface of the fixed platform (100), and the top of the target ball body (500) is provided with a collinear optical reflection component (200). A suspended telescopic measuring ruler (400) is installed at the bottom of the fixed platform (100); Mounting base (300) is disposed on the surface of the fixed platform (100) for mounting the target ball body (500) and the suspended telescopic measuring ruler (400).

2. The three-dimensional laser scanning and total station shared target sphere coordinate measuring device according to claim 1, characterized in that, The fixed platform (100) includes: An equilateral triangular platform (110) has three retractable support legs (120) vertically fixed below the three corners of the platform (110), and the middle sections of adjacent legs (120) are connected by a stabilizing rod (130). The top of the leg frame (120) is provided with a foot screw (140) at the connection between it and the platform (110). The level of the fixed platform (100) can be adjusted by adjusting the foot screw (140). The platform (110) surface is provided with a biaxial vertical tube level (150) to assist in judging the horizontal state of the fixed platform (100); The platform (110) has a through opening (160) at its center.

3. The three-dimensional laser scanning and total station shared target sphere coordinate measuring device according to claim 1, characterized in that, The collinear optical reflection assembly (200) includes: Manually screwed-in disc head (210); threaded interface one (220) for docking with the target ball body (500). A prism of reduced size (230); Reduced-size external signage (240); The collinear optical reflection component (200) is connected through the top interface of the target sphere body (500). The upper and lower interfaces of the target sphere body (500) are collinear with the center of the sphere, so as to achieve the collinearity of the center of the prism (230) and the center of the target sphere.

4. The three-dimensional laser scanning and total station shared target sphere coordinate measuring device according to claim 1, characterized in that, The mounting base (300) has a threaded interface 2 (310) at the center of its upper surface for connecting and mounting the target ball body (500); a laser emitter switch (320) is provided on the outer side of the upper surface, and a brake knob (330) is provided on the side; a threaded interface 3 (340) is provided at the center of the lower surface for connecting the suspended telescopic measuring ruler (400); a laser emitter lamp (341) is provided at the center of the bottom, and the laser emitter lamp (341) is located inside the suspended telescopic measuring ruler (400); the laser emitter switch (320) is used to control the opening and closing of the laser emitter lamp (341), and the brake knob (330) is used to lock the position of the mounting base (300).

5. The three-dimensional laser scanning and total station shared target sphere coordinate measuring device according to claim 4, characterized in that, The suspended telescopic measuring ruler (400) consists of two hollow tubes, through which the light from the laser emitting lamp (341) at the top can pass; A miniature locking bead (410) is provided between the two hollow tube sections, and a button (420) for controlling the locking bead is provided at the near-ground end of the last section. The measuring ruler has a scale (430) marked on its surface; by operating the button (420) to control the micro locking bead (410), the measuring ruler can be extended and retracted, and the measured length can be read through the surface scale (430); The top of the suspended telescopic measuring ruler (400) is connected to the mounting base (300) via the threaded interface three (340).

6. The three-dimensional laser scanning and total station shared target sphere coordinate measuring device according to claim 1, characterized in that, The top of the mounting base (300) is connected to the target ball body (500), and the bottom is connected to the suspended telescopic measuring ruler (400). The collinear optical reflection component (200) is connected to the top of the target ball body (500), forming a vertical mapping channel between the center of the prism (230), the center point of the target ball, and the ground point.

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