A projection angle adjustment system for a projection robot

Abstract

This utility model discloses a projection robot projection angle adjustment system, including a robot placed on a support. The robot includes a housing, and a projection bracket that can rotate relative to the housing is provided inside the housing. The projection bracket is provided with a projection device for projecting an image onto a projected object and an image collection device for collecting image information of the projected object. A drive device for driving the projection bracket to rotate up and down is provided between the housing and the projection bracket. The robot also includes a control module that is electrically connected to the image collection device, the projection device, and the drive device and can control the operation of the drive device based on the collected image information. The purpose of this utility model is to overcome the shortcomings of the prior art and provide a projection robot projection angle adjustment system that is automatically adjustable and more applicable.

Description

Technical Field

[0001] This utility model specifically relates to a projection angle adjustment system for a projection robot. Background Technology

[0002] With the continuous development of smart projection devices, users have placed higher demands on the display quality, ease of installation, and degree of automation of projected images. Traditional projection devices usually require users to manually adjust the projection angle to adapt to different installation environments, such as inconsistent wall heights or limited projector placement, which can lead to problems such as the projected image not being centered or trapezoidal distortion, affecting the viewing experience.

[0003] This utility model was developed precisely because of the aforementioned shortcomings. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a projection robot projection angle adjustment system that is automatically adjustable and more applicable.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a projection robot projection angle adjustment system, including a robot for placement on a support. The robot includes a housing, and a projection bracket that can rotate relative to the housing is provided inside the housing. The projection bracket is provided with a projection device for projecting an image onto a projected object and an image collection device for collecting image information of the projected object. A drive device for driving the projection bracket to rotate up and down is provided between the housing and the projection bracket. The robot also includes a control module that is electrically connected to the image collection device, the projection device, and the drive device and can control the operation of the drive device based on the collected image information.

[0007] As described above, the projection angle adjustment system for the projection robot includes a detection mechanism between the housing and the projection bracket for detecting the rotation angle of the projection bracket.

[0008] As described above, the projection angle adjustment system for the projection robot includes a detection mechanism comprising a grating sheet connected to the projection bracket and a grating sensor mounted on the secondary mounting bracket for detecting the rotation of the grating sheet.

[0009] As described above, in the projection robot projection angle adjustment system, the housing is spherical and its center is aligned with the rotation axis of the projection bracket. The housing has a long, narrow projection window that extends vertically. The front end of the projection bracket is connected to a cover plate that rotates with the bracket and can cover the projection window. The cover plate is a spherical arc that matches the shape of the housing, so that the cover plate can slide against the edge of the projection window when the projection bracket rotates.

[0010] As described above, the projection angle adjustment system for the projection robot has a projection window in the middle of the cover plate for the projection device to emit light. When the cover plate rotates, the projection window can move from the top projection position located at the bottom of the projection window to the bottom projection position located at the top of the projection window.

[0011] As described above, the projection angle adjustment system for the projection robot has two grating sensors, namely a front sensor and a rear sensor. The grating sheet has an upper notch and a lower notch that can pass through the grating sensor when it rotates. During the rotation of the grating sheet, when the upper notch reaches the front sensor, the projection window reaches the top projection position; when the lower notch reaches the front sensor, the projection window reaches the bottom projection position; when the upper notch moves downward and away from the front sensor, the lower notch reaches the rear sensor; and when the lower notch moves upward and away from the front sensor, the upper notch reaches the rear sensor.

[0012] As described above, the projection angle adjustment system for the projection robot also includes an energy storage battery inside the casing for power supply.

[0013] As described above, in the projection robot projection angle adjustment system, the projection device is connected to a heat dissipation device for heat dissipation, and the side wall of the housing is provided with a heat dissipation area for heat dissipation, and the heat dissipation area is provided with several through holes.

[0014] As described above, the projection angle adjustment system for the projection robot also includes a cooling fan positioned close to the heat dissipation area and a speaker positioned close to the heat dissipation area for playing sound inside the housing.

[0015] As described above, in the projection robot projection angle adjustment system, the projection bracket is equipped with a distance sensor for detecting the distance between itself and the object being projected.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Achieving high-precision automatic adjustment and correction, this system acquires the boundary information of the projected image and the projected object in real time through an image acquisition device, and uses advanced algorithms to calculate the angle value that needs to be adjusted, achieving precise control over the position and angle of the projected image. This automatic adjustment mechanism based on visual feedback not only improves the centering accuracy of the projected image in the vertical direction, but also solves the problem of achieving the ideal effect that is difficult to achieve with traditional manual adjustment, greatly enhancing the user experience.

[0018] 2. Enhancing the system's intelligence and adaptability, the system combines distance sensors, grating detection mechanisms, and PID control algorithms to dynamically monitor and adjust the projection bracket angle, ensuring the stability and accuracy of the projection equipment under various environmental conditions. Furthermore, regardless of whether a screen or a flat wall serves as the projection background, the system adaptively configures for optimal projection effects, demonstrating a high degree of flexibility and intelligence. Users can enjoy a high-quality projection experience without requiring specialized knowledge or complex operations, significantly enhancing the product's market competitiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the projection robot of this utility model in use;

[0020] Figure 2 This is a cross-sectional schematic diagram of the projection robot of this utility model;

[0021] Figure 3 This is an exploded view of the projection robot of this utility model;

[0022] Figure 4 This is an exploded view of some parts of the projection robot of this utility model. Figure 1 ;

[0023] Figure 5 This is an exploded view of some parts of the projection robot of this utility model. Figure 2 ;

[0024] Figure 6 This is an exploded view of some parts of the projection robot of this utility model. Figure 3 ;

[0025] Figure 7 This is a schematic diagram of the principle of the projection robot of this utility model. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the principle of the projection robot of this utility model. Figure 2 . Detailed Implementation

[0027] The utility model will be further described below with reference to the accompanying drawings:

[0028] The orientations described in this utility model specification, such as "up," "down," "left," "right," "front," and "back," are based on the orientations in the accompanying drawings and are intended to facilitate the description of the relationships between the various components. They do not indicate the unique or absolute positional relationships between the various components, but are merely one embodiment of the utility model and are not a limitation on its implementation.

[0029] This embodiment describes a projection angle adjustment system for a projection robot, such as... Figure 1 As shown, the system includes a robot 1 placed on a support A, with its front facing the projection target B. The projection target B is typically a screen, but can also be a flat, clear wall. The system is designed to provide a convenient and efficient solution, allowing users to achieve optimal projection results without manual adjustment. The core components of the robot 1 are located within its internal housing 11, including a projection bracket 12 that can rotate relative to the housing 11. The projection bracket 12 rotates relative to the housing 11 via a pivot P, allowing the projection device 13 to adjust its angle vertically to suit different projection needs. The projection bracket 12 is equipped with a projection device 13 for projecting images or videos onto the projection target B, and an image collection device 14 for collecting image information from the projection target B. The image collection device 14 is typically a camera, while the projection device 13 is an optical device that projects images or videos onto a flat surface such as a screen or wall using a light source and optical system. For details, please refer to the patent application CN201820273153.7, entitled "Projector and Projection Device". Because the pivot P is horizontally positioned, the projection bracket 12 can be adjusted vertically. To drive the vertical rotation of the projection bracket 12, a drive unit 15, typically a small motor, is provided between the housing 11 and the projection bracket 12. Furthermore, the robot 1 also includes a control module 16, which is electrically connected to the image acquisition device 14, the projection device 13, and the drive unit 15. This module controls the operation of the drive unit 15 based on the collected image information, thereby achieving automatic keystone correction and position adjustment of the projected image.

[0030] To improve the accuracy of image information processing, a distance sensor 19 can be installed on the projection bracket 12. This way, even if the robot 1 is not at a specific distance position, the distance between the projection device 13 and the projected object B can be determined based on the collected distance information, thereby optimizing the projection effect.

[0031] In practical applications, the system uses an image acquisition device 14 (such as a camera) to acquire an overall image of the current projected scene and the projected area. The control module 16 then performs image analysis to extract the following key information:

[0032] The upper edge boundary line Y(tb) of the projected object B.

[0033] The lower edge boundary line Y(bb) of the projected object B.

[0034] The upper edge boundary line Y(tp) of the projected image.

[0035] The lower edge boundary line Y(bp) of the projected image.

[0036] Based on the above information, the system can calculate the deviation between the vertical center point Y(center1) of the projected image and the vertical center point Y(center2) of the projected object B. :

[0037]

[0038]

[0039]

[0040]

[0041]

[0042] If ΔY>0, it means the current projected image is too low and needs to be adjusted upwards; if ΔY<0, it means the current image is too high and needs to be adjusted downwards.

[0043] Next, combining the known distance D between the projection device 13 and the projected object B (which can be obtained through the distance sensor 19) and the vertical field of view (FOV_vertical) of the projection device 13 (device parameter), the required pitch angle θ can be calculated:

[0044]

[0045] in:

[0046] The vertical pixel difference between the image center and the screen center;

[0047] D: Distance from the projection device 13 to the projected surface;

[0048] θ: The pitch angle that needs to be adjusted.

[0049] This angle value will be input as a control signal to the drive device 15, which will drive the projection bracket 12 to complete the rotation of the corresponding angle, so that the projected image is centered on the projection surface in the vertical direction.

[0050] In addition, the system can also introduce PID control algorithm to perform closed-loop control of the angle adjustment process, so as to improve response speed and stability and avoid jitter or error accumulation caused by a large adjustment at one time.

[0051] This image recognition and angle calculation mechanism enables true "smart projection," achieving precise autofocus and image positioning without user intervention, greatly improving ease of use and user experience.

[0052] As a preferred embodiment, a detection mechanism 17 is provided between the housing 11 and the projection bracket 12 for detecting the rotation angle of the projection bracket 12. Specifically, the detection mechanism 17 includes a grating plate 171 and a grating sensor 172. When the grating plate 171 rotates with the projection bracket 12, the grating sensor 172 can detect the rotation amplitude of the grating plate 171, thereby accurately determining the current angular position.

[0053] In terms of further optimization, considering the unity of overall appearance design and functionality, the housing 11 is designed in a spherical shape with its center corresponding to the rotation axis of the projection bracket 12. The housing 11 has a long, vertically extending projection window 111, while the cover plate 18 rotates with the projection bracket 12, covering the projection window 111 while maintaining aesthetics. The cover plate 18 has a projection window 181 in the center for light to be emitted from the projection device 13, allowing the projection window 181 to move between a top-down projection position and a bottom-up projection position. Figure 2 As shown, the cover plate 18 is provided with a projection window 181 in the middle for the projection device 13 to emit light. When the cover plate 18 is rotated, the projection window 181 can move from the top projection position located at the lower end of the projection window 111 to the bottom projection position located at the upper end of the projection window 111, so that the projection window 181 can move from the top projection position P2 to the bottom projection position P1 and move and adjust between the two positions.

[0054] In addition, to improve system stability and safety, two grating sensors 172 are provided: a front sensor 173 and a rear sensor 174. The grating plate 171 has an upper notch 175 and a lower notch 176. During rotation, these notches pass through the grating sensor 172, such as... Figures 5 to 7 As shown, the grating sheet 171 is provided with an upper notch 175 and a lower notch 176 that can pass through the grating sensor 172 when it rotates. During the rotation of the grating sheet 171, when the upper notch 175 reaches the front sensor 173, the projection window 111 reaches a top projection position; when the lower notch 176 reaches the front sensor 173, the projection window 111 reaches a bottom projection position; when the upper notch 175 moves downwards and away from the front sensor 173, the lower notch 176 reaches the rear sensor 174; and when the lower notch 176 moves upwards and away from the front sensor 173, the upper notch 175 reaches the rear sensor 174. Figure 8As shown, when one edge of the upper notch 175 reaches the front sensor 173, the projection window 111 reaches the top projection position; when the grating plate 171 continues to rotate and the other edge of the upper notch 175 leaves the front sensor 173, the lower notch 176 reaches the rear sensor 174; when one edge of the lower notch 176 reaches the front sensor 173, the projection window 111 reaches the bottom projection position; when the grating plate 171 continues to rotate and the other edge of the lower notch 176 leaves the front sensor 173, the upper notch 175 reaches the rear sensor 174. The rear sensor 174, through the aforementioned structure, enables the system to promptly identify when the projection window 181 reaches the overhead projection position P2 or the low projection position P1. When the projection window 181 continues to rotate after reaching the overhead projection position P2, it detects the lower notch 176 reaching the rear sensor 174 as a limit signal; similarly, when the projection window 181 continues to rotate after reaching the projection position P1, it detects the upper notch 175 reaching the rear sensor 174 as a limit signal. This achieves the function of limiting the rotational limits of the projection bracket 12. This helps the system identify the positional limits of the projection bracket 12, ensuring safe and reliable operation.

[0055] In addition, the casing 11 is equipped with a storage battery 101 for power supply and a heat dissipation device 131 connected to the projection device 13. Together with the heat dissipation area 112 (with several through holes 113) on the side wall of the casing 11, the heat dissipation efficiency is improved. Furthermore, the cooling fan 102 and the speaker 103 share the same through holes 113 in the heat dissipation area 112, which not only enhances the compactness of the product but also improves the overall aesthetics of the appearance.

[0056] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A projection robot projection angle adjustment system, characterized in that: The robot (1) is placed on a support. The robot (1) includes a housing (11). The housing (11) contains a projection bracket (12) that can rotate relative to it. The projection bracket (12) is provided with a projection device (13) for projecting images onto the projected object and an image collection device (14) for collecting image information of the projected object. A drive device (15) for driving the projection bracket (12) to rotate up and down is provided between the housing (11) and the projection bracket (12). The robot (1) also contains a control module (16) that is electrically connected to the image collection device (14), the projection device (13) and the drive device (15) and can control the drive device (15) to work based on the collected image information.

2. The projection robot projection angle adjustment system of claim 1, wherein: A detection mechanism (17) for detecting the rotation angle of the projection bracket (12) is provided between the housing (11) and the projection bracket (12).

3. The projection robot projection angle adjustment system of claim 2, wherein: The detection mechanism (17) includes a grating plate (171) connected to the projection bracket (12) and a grating sensor (172) set on the sub-mount bracket for detecting the rotation of the grating plate (171).

4. The projection robot projection angle adjustment system of claim 3, wherein: The housing (11) is spherical in shape and its center is set in relation to the pivot of the projection bracket (12). The housing (11) has a long projection window (111) that extends vertically. The front end of the projection bracket (12) is connected to a cover plate (18) that rotates with it and can cover the projection window (111). The cover plate (18) is a spherical arc that matches the shape of the housing (11), so that the cover plate (18) can slide against the edge of the projection window (111) when the projection bracket (12) rotates.

5. The projection angle adjustment system for a projection robot according to claim 4, characterized in that: The cover plate (18) is provided with a projection window (181) in the middle for the projection device (13) to emit light. When the cover plate (18) is rotated, the projection window (181) can move from the downward projection position located at the lower end of the projection window (111) to the upward projection position located at the upper end of the projection window (111).

6. The projection robot projection angle adjustment system of claim 5, wherein: The grating sensor (172) is provided in two parts, namely a front sensor (173) and a rear sensor (174). The grating plate (171) is provided with an upper notch (175) and a lower notch (176) that can pass through the grating sensor (172) when it rotates. During the rotation of the grating plate (171), when the upper notch (175) reaches the front sensor (173), the projection window (111) reaches the top projection position. When the lower notch (176) reaches the front sensor (173), the projection window (111) reaches the bottom projection position. When the upper notch (175) moves downward and leaves the front sensor (173), the lower notch (176) reaches the rear sensor (174). When the lower notch (176) moves upward and leaves the front sensor (173), the upper notch (175) reaches the rear sensor (174).

7. The projection robot projection angle adjustment system of any of claims 1-6, wherein: The casing (11) is also equipped with an energy storage battery (101) for power supply.

8. The projection robot projection angle adjustment system of any one of claims 1-6, wherein: The projection device (13) is connected to a heat dissipation device (131) for heat dissipation. The side wall of the housing (11) is provided with a heat dissipation area (112) for heat dissipation. Several through holes (113) are opened on the heat dissipation area (112).

9. The projection robot projection angle adjustment system of claim 8, wherein: The casing (11) is also provided with a cooling fan (102) attached to the heat dissipation area (112) and a speaker (103) attached to the heat dissipation area (112) for playing sound.

10. The projection robot projection angle adjustment system of any one of claims 1-6, wherein: The projection bracket (12) is equipped with a distance sensor (19) for detecting the distance between itself and the object being projected.

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