Oblique photogrammetry device for three-dimensional modeling

Abstract

The invention discloses an oblique photogrammetry device for three-dimensional modeling, the oblique photogrammetry device structurally comprises an adjusting device, a fixed insertion block and a measuring device, the top of the adjusting device is provided with the fixed insertion block, and the measuring device is installed on the bottom end face of the adjusting device; the adjusting device comprises a shell, a control module, a transmission rotating shaft, a first servo motor and an adjusting structure, the top of the shell is fixedly connected with the fixed insertion block, and the control module is installed on the left side of the interior of the shell. And the measuring device can be rotationally adjusted, so that the measuring device can be conveniently mounted in a flying platform for multi-angle shooting.

Description

Technical Field

[0001] The invention relates to the technical field of photogrammetry, in particular to an oblique photogrammetry device for three-dimensional modeling. Background Art

[0002] The three-dimensional digital city model is an important part of the digital earth. The construction of the three-dimensional digital city model generally includes two parts: geometric modeling and texture reconstruction. At present, there are many kinds of specific implementation methods for both geometric modeling and texture reconstruction. In three-dimensional modeling, it is often necessary to measure the three-dimensional modeling through a camera measurement device. The oblique photography technology is a high-tech technology developed in the international surveying and mapping field in recent years. It subverts the limitation that orthophotos can only be taken from vertical angles. By carrying multiple sensors on the same flying platform and collecting images from five different angles, including a vertical angle, four oblique angles, etc., users are introduced into a real and intuitive world that conforms to human vision.

[0003] Based on the above, the inventors have found that the existing oblique photogrammetry device for 3D modeling has the following main deficiencies. For example, the existing oblique photography camera is installed on a flying platform, and the photography direction can only be adjusted by changing the direction of the flying platform, so that the camera photography angle is limited. In addition, the camera head is exposed in the air and is easily contaminated with dust, which affects the clarity of the 3D modeling photography. Summary of the invention

[0004] In view of the above problems, the present invention provides an oblique photogrammetry device for three-dimensional modeling.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: an oblique photogrammetry device for three-dimensional modeling, the structure of which includes an adjustment device, a fixed plug block, and a measuring device, the top of the adjustment device is provided with a fixed plug block, and the measuring device is installed on the bottom end surface of the adjustment device; the adjustment device includes a shell, a control module, a transmission shaft, a servo motor 1, and an adjustment structure, the top of the shell is fixedly connected to the fixed plug block, the control module is installed on the left side of the inside of the shell, the transmission shaft runs through both sides of the shell, the servo motor 1 is installed inside the shell, and the servo motor 1 is meshed and connected with the transmission shaft; The adjustment structure includes a swing frame and a rotating frame, the swing frame is meshed with the transmission shaft, a gear rod is provided at the bottom of the swing frame, the rotating frame is rotatably connected with the rotating groove at the bottom of the swing frame, and a servo motor 2 is installed inside the rotating frame and meshed with the gear rod, and two buffer columns are provided on both sides of the rotating frame, and the bottom of the buffer column is bolted to the measuring device; The buffer column includes a tube body, a movable rod, and a buffer spring. The tube body is vertically fixed to the inner bottom end of the rotating frame. The movable rod is movably matched with the inner part of the tube body. At the same time, the bottom of the movable rod is connected with the top bolt of the measuring device. Two buffer springs are provided, and the buffer springs are movably matched with the movable rod. The fixing plug block can be used for installation and disassembly on the flight platform, and the control module is used to control the servo motor 1 to rotate forward and reverse and mesh with the transmission shaft, so that the transmission shaft can drive the swing frame to swing left and right, and the photography angle of the measuring device can be adjusted. The rotating frame is then clamped in the end face of the rotating groove, and the servo motor 2 is used to rotate forward and reverse and mesh with the gear rod, so that the rotating frame can be driven to rotate in the rotating groove, and the photography direction of the measuring device can be adjusted.

[0006] Furthermore, the measuring device includes a mounting frame, a tilting camera, a recessed groove, a slide groove, and a shielding device. The top of the mounting frame is fixedly connected to the bottom of the movable rod. The tilting camera is installed in the middle of the interior of the mounting frame. The recessed groove is located on the bottom end surface of the mounting frame. Two slide grooves are provided, and the slide grooves are respectively arranged on both sides of the bottom of the recessed groove. The shielding device is arranged at the bottom end of the interior of the mounting frame. By arranging the tilting camera on the inner side of the recessed groove, the tilting camera can be prevented from being directly collided.

[0007] Furthermore, the shielding device includes a movable roller, a support frame, a shielding sheet, and a servo motor. The bottoms of both sides of the movable roller are supported by the support frame, the bottom of the support frame is fixedly installed on the bottom of the mounting frame, the shielding sheet is wound around the end face of the movable roller, and the servo motor is connected to the movable roller through a belt transmission. The shielding sheet shields the recessed groove to prevent dust from adhering to the end face of the tilted camera and affecting the photographic effect.

[0008] Furthermore, the shielding sheet is made of polyamide, which is very tough and has good elasticity and wear resistance.

[0009] Furthermore, two sides of the shielding sheet are slidably matched with the sliding groove.

[0010] Furthermore, the side end of the recessed groove is provided with an inclination angle of 120 degrees, and the field of view of the tilted camera photography can be enlarged by setting the inclination angle of the recessed groove. Beneficial Effects

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. When the measuring device is carried on the flying platform and flies forward to take pictures, the measuring device can be adjusted up and down, and the measuring device can also be rotated to facilitate the installation of the measuring device on the flying platform for multi-angle shooting.

[0012] 2. When the flying platform lands, the present invention can drive the movable rod to move downward to buffer the compression of the buffer spring, thereby avoiding excessive vibration of the measuring device when the flying platform lands, and allowing the measuring device to land stably after tilting for photography.

[0013] 3. The present invention utilizes servo motor 3 to drive the movable roller to reverse and drive the shielding sheet to extend rightward in the slide slot, so that the shielding sheet can shield the recessed slot and prevent dust from adhering to the end face of the tilted camera and affecting the photographic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the main structure of an oblique photogrammetry device for three-dimensional modeling.

[0015] Figure 2 It is a schematic diagram of the front cross-sectional structure of the regulating device of the present invention.

[0016] Figure 3 It is a schematic diagram of the side cross-sectional structure of the regulating structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the side cross-sectional structure of the buffer column of the present invention.

[0018] Figure 5 It is a schematic diagram of the front cross-sectional structure of the measuring device of the present invention.

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the shielding device of the present invention when viewed from above.

[0020] In the figure: adjusting device 1, fixed plug block 2, measuring device 3, housing 11, control module 12, transmission shaft 13, servo motor one 14, adjusting structure 15, swing frame 151, rotating frame 154, gear rod 153, rotating groove 152, servo motor two 155, buffer column 156, tube body 1531, movable rod 1532, buffer spring 1533, installation frame 31, tilt camera 32, recessed groove 33, slide groove 34, shielding device 35, movable roller 351, support frame 352, shielding sheet 353, servo motor three 354. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Example 1: Please refer to Figure 1-Figure 4 , the specific embodiments of the present invention are as follows: Its structure includes an adjusting device 1, a fixed plug block 2, and a measuring device 3. The top of the adjusting device 1 is provided with a fixed plug block 2, and the measuring device 3 is installed on the bottom end surface of the adjusting device 1; the adjusting device 1 includes a housing 11, a control module 12, a transmission shaft 13, a servo motor 14, and an adjusting structure 15. The top of the housing 11 is fixedly connected to the fixed plug block 2, the control module 12 is installed on the left side inside the housing 11, the transmission shaft 13 runs through both sides of the housing 11, and the servo motor 14 is installed inside the housing 11, and the servo motor 14 is meshed and connected with the transmission shaft 13; The adjustment structure 15 includes a swing frame 151 and a rotating frame 154. The swing frame 151 is meshed with the transmission shaft 13, and a gear rod 153 is provided at the bottom of the swing frame 151. The rotating frame 154 is rotatably connected to a rotating groove 152 at the bottom of the swing frame 151, and a servo motor 155 is installed inside the rotating frame 154 and meshed with the gear rod 153. At the same time, two buffer columns 156 are provided on both sides of the rotating frame 154, and the bottom of the buffer column 156 is bolted to the measuring device 3; The buffer column 156 includes a tube body 1531, a movable rod 1532, and a buffer spring 1533. The tube body 1531 is vertically fixed to the inner bottom end of the rotating frame 154. The movable rod 1532 is movably matched with the inner part of the tube body 1531. At the same time, the bottom of the movable rod 1532 is bolted to the top of the measuring device 3. Two buffer springs 1533 are provided, and the buffer springs 1533 are movably matched with the movable rod 1532. The fixing plug block 2 can be installed and disassembled on the flight platform, and the control module 12 is used to control the servo motor 14 to rotate forward and reverse and mesh with the transmission shaft 13, so that the transmission shaft 13 can drive the swing frame 151 to swing left and right, and the angle of photography of the measuring device 3 can be adjusted. The rotating frame 154 is then stuck in the end face of the rotating groove 152, and the servo motor 2 155 is operated to rotate forward and reverse and mesh with the gear rod 153, which can drive the rotating frame 154 to rotate in the rotating groove 152, and the photography direction of the measuring device 3 can be adjusted.

[0023] Based on the above embodiment, the specific working principle is as follows: the fixed plug block 2 can be installed and disassembled on the flight platform, and then the servo motor 1 14 is controlled by the control module 12 to rotate forward and reversely and mesh with the transmission shaft 13, so that the transmission shaft 13 can drive the swing frame 151 to swing left and right, and the shooting angle of the measuring device 3 can be adjusted. Then, the rotating frame 154 is clamped on the end surface of the rotating groove 152, and then the servo motor 2 155 is operated to rotate forward and reversely and mesh with the gear rod 153, which can drive the rotating frame 154 to rotate in the rotating groove 152 to adjust the shooting direction of the measuring device 3. Finally, the tube body 1531 is installed at the inner bottom end of the rotating frame 154. When the flight platform is loaded with the measuring device 3 and lands, the movable rod 1532 can be driven to move downward to squeeze the buffer spring 1533 to obtain buffering, thereby avoiding excessive vibration of the measuring device 3 when the flight platform lands, so that the measuring device 3 can land stably after tilting the photography.

[0024] Example 2: Please refer to Figure 5-Figure 6 , the specific embodiments of the present invention are as follows: The measuring device 3 includes a mounting frame 31, a tilt camera 32, a recessed groove 33, a slide groove 34, and a shielding device 35. The top of the mounting frame 31 is fixedly connected to the bottom of the movable rod 1532. The tilt camera 32 is installed in the middle position inside the mounting frame 31. The recessed groove 33 is located at the bottom end surface of the mounting frame 31. There are two slide grooves 34, and the slide grooves 34 are respectively arranged on both sides of the bottom of the recessed groove 33. The shielding device 35 is arranged at the bottom end of the mounting frame 31. By arranging the tilt camera 32 on the inner side of the recessed groove 33, the tilt camera 32 can be prevented from being directly hit.

[0025] The shielding device 35 includes a movable roller 351, a support frame 352, a shielding sheet 353, and a servo motor 354. The bottoms of both sides of the movable roller 351 are supported by the support frame 352. The bottom of the support frame 352 is fixedly installed on the bottom of the mounting frame 31. The shielding sheet 353 is wound around the end surface of the movable roller 351. The servo motor 354 is connected to the movable roller 351 through a belt. The shielding sheet 353 shields the recessed groove 33 to prevent dust from adhering to the end surface of the tilting camera 32.

[0026] The shielding sheet 353 is made of polyamide, which is very tough and has good elasticity and wear resistance.

[0027] Two sides of the shielding piece 353 are slidably matched with the sliding groove 34 .

[0028] The side end of the recessed groove 33 is provided with an inclination angle of 120 degrees. By setting the inclination angle of the recessed groove 33 , the field of view of the tilted camera 32 can be enlarged.

[0029] Based on the above embodiment, the specific working principle is as follows: the tilted camera 32 is set on the inner side of the recessed groove 33 to prevent the tilted camera 32 from being directly hit, and then the servo motor 354 is used to drive the movable roller 351 to reverse and drive the shielding piece 353 to extend to the right in the slide groove 34, so that the shielding piece 353 can shield the recessed groove 33 to prevent dust from adhering to the end face of the tilted camera 32 and affecting the photographic effect. On the contrary, the movable roller 351 rotates forward to drive the shielding piece 353 to shrink to the left in the slide groove 34, so that the tilted camera 32 can be cleaned during flight photography.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended that all changes falling within the meaning and range of equivalent elements of the claims are included in the present invention. Any reference sign in the claims should not be regarded as limiting the claims involved.

Claims

1. An oblique photogrammetry device for three-dimensional modeling, the structure of which comprises an adjustment device (1), a fixed plug block (2), and a measuring device (3), wherein the top of the adjustment device (1) is provided with a fixed plug block (2), and the measuring device (3) is installed on the bottom end surface of the adjustment device (1); characterized in that: The regulating device (1) comprises a housing (11), a control module (12), a transmission shaft (13), a servo motor (14), and an regulating structure (15); the top of the housing (11) is fixedly connected to the fixed plug block (2); the control module (12) is mounted on the left side inside the housing (11); the transmission shaft (13) passes through both sides of the housing (11); the servo motor (14) is mounted inside the housing (11), and the servo motor (14) is meshedly connected to the transmission shaft (13); The adjustment structure (15) comprises a swing frame (151) and a rotating frame (154); the swing frame (151) is meshedly connected with the transmission shaft (13); a gear rod (153) is provided at the bottom of the swing frame (151); the rotating frame (154) is rotatably connected with a rotating groove (152) at the bottom of the swing frame (151); a servo motor 2 (155) is installed inside the rotating frame (154) and is meshedly connected with the gear rod (153); two buffer columns (156) are provided on both sides of the inside of the rotating frame (154); and the bottom of the buffer column (156) is bolted to the measuring device (3); The buffer column (156) comprises a tube body (1531), a movable rod (1532), and a buffer spring (1533); the tube body (1531) is vertically fixed to the inner bottom end of the rotating frame (154); the movable rod (1532) is movably matched with the inner part of the tube body (1531); the bottom of the movable rod (1532) is bolted to the top of the measuring device (3); two buffer springs (1533) are provided, and the buffer springs (1533) are movably matched with the movable rod (1532).

2. The oblique photogrammetry device for three-dimensional modeling according to claim 1, characterized in that: The measuring device (3) comprises a mounting frame (31), a tilting camera (32), a recessed groove (33), a sliding groove (34), and a shielding device (35); the top of the mounting frame (31) is fixedly connected to the bottom of the movable rod (1532); the tilting camera (32) is mounted in the middle of the mounting frame (31); the recessed groove (33) is located at the bottom end surface of the mounting frame (31); two sliding grooves (34) are provided, and the sliding grooves (34) are respectively arranged at two sides of the bottom of the recessed groove (33); and the shielding device (35) is arranged at the bottom end of the mounting frame (31).

3. The oblique photogrammetry device for three-dimensional modeling according to claim 2, characterized in that: The shielding device (35) comprises a movable roller (351), a support frame (352), a shielding sheet (353), and a servo motor three (354); the bottoms of both sides of the movable roller (351) are supported by the support frame (352); the bottom of the support frame (352) is fixedly mounted on the bottom of the mounting frame (31); the shielding sheet (353) is wound around the end surface of the movable roller (351); and the servo motor three (354) is connected to the movable roller (351) via a belt.

4. The oblique photogrammetry device for three-dimensional modeling according to claim 3, characterized in that: The shielding sheet (353) is made of polyamide and has the characteristics of being very tough, having good elasticity and wear resistance.

5. The oblique photogrammetry device for three-dimensional modeling according to claim 3, characterized in that: Two sides of the shielding sheet (353) are slidably engaged with the slide groove (34).

6. The oblique photogrammetry device for three-dimensional modeling according to claim 2, characterized in that: The side end of the recessed groove (33) is provided with an inclination angle of 120 degrees.

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