Field calibration device for simulating dynamic simulation scene

Abstract

The utility model discloses an on-site calibration device for simulating a simulation dynamic scene, which belongs to the field of visual simulation and comprises two supporting seats and a calibration plate, a vertical column is vertically arranged in the center of the top of each supporting seat, a lifting block is slidably mounted on the surface of each vertical column, and the calibration plate is arranged on the lifting block. Mounting shafts are rotationally arranged on the surfaces of the sides, close to each other, of the two lifting blocks, mounting strips are arranged at the ends of the mounting shafts, the mounting strips are perpendicular to the mounting shafts, grooves are formed in the sides, close to each other, of the two mounting strips, and the calibration plate is arranged between the two mounting strips. The two sides of the calibration plate are distributed on the inner sides of the two grooves, the calibration plate is arranged between the two mounting strips and transversely limited through the two mounting strips, deviation is prevented, the bottom of the calibration plate is supported by the supporting transverse plate, stability of the calibration plate is guaranteed, and the calibration effect is prevented from being affected by extrusion deformation of the calibration plate.

Description

Technical Field

[0001] The utility model relates to the field of visual simulation, and more specifically to an on-site calibration device for simulating dynamic scenes. Background Art

[0002] Simulation dynamic scene simulation is a method that uses computer technology to create and simulate dynamic scenes in the real world. Its application areas include transportation, urban planning, industrial design, etc. In the field of transportation, only driving is often achieved through simulation dynamics. Simulation dynamic scene simulation uses a specific algorithm to simulate dynamic scenes in the computer through the cooperation of cameras and infrared radars. In different environments, the camera's shooting is affected by many factors such as distance, angle, and lighting. Therefore, the camera needs to be calibrated during the simulation.

[0003] The traditional calibration method is to use a calibration plate. During calibration, the calibration plate is placed in front of the camera, and the distance and angle are adjusted to perform multi-angle shooting. Then, calibration is achieved according to the dots on the calibration plate. However, in the existing technology, the movement of the calibration plate during calibration is mostly done by handheld operation, and the height and angle of the calibration plate cannot be accurately controlled, which easily leads to errors during calibration and affects accuracy. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an on-site calibration device for simulating dynamic scenes, which can support the calibration plate to facilitate the control of the calibration plate and assist staff in improving the calibration accuracy.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions.

[0008] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0009] Furthermore, a sliding groove is opened on the side of the two columns facing away from each other, and a locking bolt A is screwed on the back of the lifting block. The locking bolt A corresponds to the position of the sliding groove, and the lifting block is locked and fixed by the locking bolt A.

[0010] Furthermore, angle scale lines are evenly engraved on the side where the two lifting blocks are close to each other with the installation shaft as the center, and a pointer adapted to the angle scale line is provided on the surface of the installation shaft, and the pointer is parallel to the installation bar.

[0011] Furthermore, a cavity is opened inside the lifting block, the installation shaft passes through the cavity, and a C-shaped clamp is symmetrically installed in the cavity for rotation. The two C-shaped clamps are installed on the same rotating shaft, and the two C-shaped clamps are respectively placed on the upper and lower sides of the installation shaft.

[0012] Furthermore, an extension plate is provided on the side of the C-shaped clamp away from its rotation axis, the two extension plates are parallel, a control bolt is screwed on the front surface of the lifting block, a connecting block is installed on the end of the control bolt through a bearing, the connecting block is placed inside the cavity, the connecting block is placed between the two extension plates, and connecting rods are hinged on the upper and lower surfaces of the connecting block, and the ends of the two connecting rods away from the connecting block are respectively hinged on the ends of the two extension plates.

[0013] Furthermore, adjustment legs are symmetrically screwed on both sides of the bottom of the support seat.

[0014] 3. Beneficial effects

[0015] Compared with the existing technology, the advantages of the present invention are: the present invention provides an on-site calibration device for simulating dynamic scenes, places the calibration plate between two mounting bars, and limits it laterally through the two mounting bars to prevent it from offsetting, and the bottom of the calibration plate is supported by the supporting horizontal plate to ensure the stability of the calibration plate and prevent the calibration plate from being affected by extrusion and deformation, and at the same time, the device can adjust the height and angle of the calibration plate to further improve the flexibility during calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the support base structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the lifting block of the utility model;

[0019] Figure 4 This is a schematic diagram of the slider structure of the present utility model.

[0020] Explanation of the numbers in the figure: 1. Support seat; 101. Adjustment leg; 2. Post; 201. Slide; 3. Lifting block; 301. Locking bolt A; 302. Angle scale line; 303. Cavity; 4. Mounting shaft; 5. Mounting bar; 501. Groove; 502. Protruding plate; 503. Locking bolt B; 6. Slide; 601. Limit plate; 602. Support cross plate; 7. Calibration plate; 8. C-type clamp; 9. Extension plate; 10. Control bolt; 11. Connecting block; 12. Connecting rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figure 1As shown, a field calibration device for simulating dynamic scenes is provided. In dynamic simulation, the test field needs to be modeled with high precision. The digital scene adopts a combination of precise physical modeling, efficient numerical simulation, and high-fidelity image rendering to meet the test scene requirements of the intelligent connected test field. A human-vehicle environment model including vehicles, roads, weather, lighting, traffic, etc., as well as various on-board sensor models are realistically constructed to achieve high-precision modeling. At the same time, in order to address the difficulty of automatically constructing large traffic scenes, SUMO and UE4 are used to construct traffic scenes respectively, combining the traffic simulation advantages of SUMO and the high-efficiency scene rendering advantages of Carla three-dimensional scenes. Finally, the Traci interface is used to realize high-precision traffic flow joint simulation, and then the simulation is realized. When scanning and modeling the external scene, in order to ensure the accuracy of the camera shooting, the camera needs to be calibrated on site.

[0024] Please refer to Figure 1 and Figure 2 As shown, the on-site calibration device includes a support base 1 and a calibration plate 7. There are two support bases 1. A column 2 is vertically arranged at the center of the top of the support base 1. A lifting block 3 is slidably installed on the surface of the column 2. A slide groove 201 is provided on the side of the two columns 2 facing away from each other. A locking bolt A301 is screwed on the back of the lifting block 3. The locking bolt A301 corresponds to the position of the slide groove 201. The lifting block 3 is locked and fixed by the locking bolt A301 so that the lifting block 3 can only slide in the vertical direction to increase its height and keep it fixed. The surface of the side where the two lifting blocks 3 are close to each other is rotated. A mounting shaft 4 is provided, and a mounting bar 5 is provided at the end of the mounting shaft 4. The mounting bar 5 and the mounting shaft 4 are perpendicular to each other. The mounting bar 5 and the mounting shaft 4 are fixedly connected, and the two can only rotate synchronously to achieve angle adjustment. A groove 501 is provided on the side where the two mounting bars 5 are close to each other. The calibration plate 7 is placed between the two mounting bars 5, and the two sides of the calibration plate 7 are distributed on the inner side of the two grooves 501 to fix the calibration plate 7 so that the calibration plate 7 and the mounting bar 5 can rotate synchronously. During installation, the mounting bar 5 cannot cause lateral extrusion to the calibration plate 7 to prevent the calibration plate 7 from deforming and affecting the calibration effect.

[0025] Please refer to Figure 2 and Figure 4As shown, convex plates 502 are symmetrically provided at both ends of the mounting bar 5, and the convex plates 502 can further improve the limiting of the calibration plate 7, wherein the convex plate 502 placed at the lower front side is vertically slidably penetrated by a slide bar 6 on the inner side, and a locking bolt B503 is screwed on the surface of the convex plate 502, and the slide bar 6 is locked and fixed by the locking bolt B503. The two slide bars 6 are respectively placed on both sides of the front of the calibration plate 7, and a limiting plate 601 is provided on the top of the slide bar 6. The limiting plate 601 can prevent the slide bar 6 from sliding down and falling off, and at the same time facilitates the control of the slide bar 6 sliding up and down. A supporting cross plate 602 is rotatably installed at the bottom of the slide bar 6, and the supporting cross plate 602 structure is L-shaped. The two ends of the bottom of the calibration plate 7 are respectively supported by the two supporting cross plates 602. When installing the calibration plate 7, the supporting cross plate 602 can be rotated backward to support the calibration plate 7 and fixed by the locking bolt B503. The calibration plate 7 is only subjected to the supporting force and is not subjected to any extrusion to prevent deformation.

[0026] Please refer to Figure 3 and Figure 4 As shown, the side where the two lifting blocks 3 are close to each other is evenly engraved with angle scale lines 302 with the mounting shaft 4 as the center. A pointer that matches the angle scale line 302 is provided on the surface of the mounting shaft 4. The pointer is parallel to the mounting bar 5, so that the angle of the calibration plate 7 can be judged by the coordination between the pointer and the angle scale line 302.

[0027] Please refer to Figure 3 As shown, a cavity 303 is opened inside the lifting block 3, and the mounting shaft 4 passes through the cavity 303. A C-shaped clamp 8 is symmetrically rotated and installed inside the cavity 303. Two C-shaped clamps 8 are installed on the same rotating shaft. This rotating shaft is fixed on one side of the cavity 303 and does not contact the mounting shaft 4. The two C-shaped clamps 8 are respectively placed on the upper and lower sides of the mounting shaft 4 to control whether the mounting shaft 4 can rotate by controlling the tightening or loosening of the two C-shaped clamps 8. An extension plate 9 is provided on the side of the C-shaped clamp 8 away from its rotating shaft. The two extension plates 9 are parallel to the lifting block 3. A control bolt 10 is screwed on the front surface, and a connecting block 11 is installed on the end of the control bolt 10 through a bearing. The connecting block 11 is placed inside the cavity 303 and between the two extension plates 9. Connecting rods 12 are hinged on the upper and lower surfaces of the connecting block 11. The ends of the two connecting rods 12 facing away from the connecting block 11 are respectively hinged on the ends of the two extension plates 9. The position of the connecting block 11 is adjusted by rotating the control bolt 10 externally, and then the two extension plates 9 are pulled or pushed closer or farther away by the two connecting rods 12, thereby realizing the control of the two C-shaped clamps 8.

[0028] Please refer to Figure 1 As shown, adjustment legs 101 are symmetrically screwed on both sides of the bottom of the support base 1, and the two support bases 1 are at the same height.

[0029] Working principle: When conducting on-site calibration, the device can be placed in front of the camera and the distance of the device can be adjusted. When in use, the two support bases 1 are placed on the ground respectively, and the two support bases 1 are adjusted to the same height by adjusting the support legs 101. At this time, the column 2 is perpendicular to the ground. The height of the lifting block 3 is adjusted according to the usage and locked and fixed by the locking bolt A301. Due to the existence of the slide groove 201, the lifting block 3 can only move in the vertical direction. Keep the mounting bar 5 in a vertical state during installation, and then place the calibration plate 7 between the two mounting bars 5, and place the two sides of the calibration plate 7 inside the groove 501 to align the calibration. The fixed plate 7 is laterally limited, and then the slide bar 6 is moved down so that the supporting cross plate 602 is placed at the bottom of the calibration plate 7, and the supporting cross plate 602 is rotated backward to support the calibration plate 7, and locked and fixed by the locking bolt B503. At this time, the calibration plate 7 is effectively supported, and the rotation angle of the calibration plate 7 can also be adjusted. The angle of the calibration plate 7 is judged by the cooperation between the pointer on the surface of the mounting shaft 4 and the angle scale line 302. When adjusting, the control bolt 10 can be rotated to control the connecting block 11, and then the two extension plates 9 are controlled to move closer or farther away through the connecting block 11, and then the mounting shaft 4 is locked or loosened through the C-type clamp 8.

[0030] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A field calibration device for simulating dynamic scenes, comprising a support base (1) and a calibration plate (7), characterized in that: The support base (1) is provided with two, a column (2) is vertically provided at the center of the top of the support base (1), a lifting block (3) is slidably installed on the surface of the column (2), a mounting shaft (4) is rotatably provided on the surface of the side where the two lifting blocks (3) are close to each other, a mounting bar (5) is provided at the end of the mounting shaft (4), the mounting bar (5) and the mounting shaft (4) are perpendicular to each other, a groove (501) is provided on the side where the two mounting bars (5) are close to each other, the calibration plate (7) is placed between the two mounting bars (5), and the two sides of the calibration plate (7) are distributed and placed inside the two grooves (501), and the mounting bar (5) Both ends are symmetrically provided with convex plates (502), wherein a slide bar (6) is vertically slidably penetrated on the inner side of the convex plate (502) placed at the lower front side, and a locking bolt B (503) is screwed on the surface of the convex plate (502), and the slide bar (6) is locked and fixed by the locking bolt B (503). The two slide bars (6) are respectively placed on both sides in front of the calibration plate (7), and a limiting plate (601) is provided on the top of the slide bar (6). A supporting cross plate (602) is rotatably installed at the bottom of the slide bar (6), and the supporting cross plate (602) has an L-shaped structure. The two ends of the bottom of the calibration plate (7) are respectively supported by the two supporting cross plates (602).

2. The on-site calibration device for simulating dynamic scenes according to claim 1, characterized in that: A sliding groove (201) is provided on the side of the two uprights (2) facing away from each other, and a locking bolt A (301) is screwed on the back of the lifting block (3). The locking bolt A (301) corresponds to the position of the sliding groove (201), and the lifting block (3) is locked and fixed by the locking bolt A (301).

3. The on-site calibration device for simulating dynamic scenes according to claim 1, characterized in that: Angle scale lines (302) are evenly engraved on the side where the two lifting blocks (3) are close to each other, with the installation shaft (4) as the center. A pointer that matches the angle scale line (302) is provided on the surface of the installation shaft (4), and the pointer is parallel to the installation bar (5).

4. The on-site calibration device for simulating dynamic scenes according to claim 1, characterized in that: A cavity (303) is provided inside the lifting block (3), the installation shaft (4) passes through the cavity (303), and a C-shaped clamp (8) is symmetrically and rotationally installed inside the cavity (303). Two C-shaped clamps (8) are installed on the same rotating shaft, and the two C-shaped clamps (8) are respectively placed on the upper and lower sides of the installation shaft (4).

5. The on-site calibration device for simulating dynamic scenes according to claim 4, characterized in that: An extension plate (9) is provided on the side of the C-shaped clamp (8) away from its rotation axis, and the two extension plates (9) are parallel. A control bolt (10) is screwed on the front surface of the lifting block (3), and a connecting block (11) is installed at the end of the control bolt (10) through a bearing. The connecting block (11) is placed inside the cavity (303) and between the two extension plates (9). The upper and lower surfaces of the connecting block (11) are hinged with connecting rods (12), and the ends of the two connecting rods (12) away from the connecting block (11) are respectively hinged to the ends of the two extension plates (9).

6. The on-site calibration device for simulating dynamic scenes according to claim 1, characterized in that: Adjustment legs (101) are symmetrically screwed on both sides of the bottom of the support seat (1).

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