Projector screen position automatic adjusting device

Abstract

The application discloses a projector screen projection position automatic adjusting device, which comprises a servo driving mechanism, a projector is arranged on the servo driving mechanism, the servo driving mechanism is used for adjusting the position and the space posture of the projector, an image capturer is used for acquiring image information of a projection area, a processing controller is used for receiving the image information of the image capturer, calculating the relative position relationship between a screen projection picture and a screen based on the image information, calculating the adjusting path of the position and the space posture of the projector for moving the screen projection picture to the screen based on the relative position relationship, and driving the projector by the servo driving mechanism based on the adjusting path. The adjusting device can automatically correct the deviation of the screen projection picture relative to the screen, so that the screen projection picture is automatically moved to the screen.

Description

TECHNICAL FIELD

[0001] The present application relates to a projector screen projection position automatic adjustment device. BACKGROUND

[0002] When the projector is switched for the next projection, the projected image may not fall on the screen in many cases, that is, the projected image is misaligned with the screen, and when the misalignment deviation is large, the position and spatial angle of the projector need to be adjusted. In the prior art, manual adjustment is usually used, which is cumbersome to operate. SUMMARY

[0003] In view of the above technical problems existing in the prior art, the present application provides a projector screen projection position automatic adjustment device.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is:

[0005] A projector screen projection position automatic adjustment device, comprising:

[0006] A servo drive mechanism, the projector is arranged on the servo drive mechanism, and the servo drive mechanism is used for adjusting the position and spatial attitude of the projector;

[0007] An image capture device, which is used for acquiring image information of a projection area;

[0008] A processing controller, which receives the image information of the image capture device, calculates the relative position relationship between the projected image and the screen based on the image information, calculates the adjustment path of the position and spatial attitude of the projector for moving the projected image to the screen based on the relative position relationship, and drives the projector by the servo drive mechanism based on the adjustment path.

[0009] Preferably, the processing controller calculates the relative position relationship between the projected image and the screen based on the geometric center of the projected image and the screen.

[0010] Preferably, the servo drive mechanism is configured to drive the projector to move forward and backward relative to the screen and to drive the projector to rotate horizontally and to pitch.

[0011] Preferably, the servo drive mechanism is arranged on a rack, the rack has a tray above, and the projector is placed on the tray.

[0012] Preferably, the servo drive mechanism comprises a first drive mechanism arranged at the bottom of the rack for driving the rack to move forward and backward relative to the screen.

[0013] Preferably, the servo drive mechanism comprises a second drive mechanism for driving the tray to rotate horizontally and to pitch.

[0014] Preferably, the second drive mechanism comprises:

[0015] a post disposed on the frame;

[0016] a support platform disposed above the post, the tray being located on the support platform;

[0017] a spherical hinge assembly disposed between the support platform and the post to enable the support platform to pitch;

[0018] a movable support rod connected to the bottom of the support platform;

[0019] a first motor mounted on the frame and located at one side of the lower part of the movable support rod, the output shaft of the first motor being used to drive the movable support rod to move to drive the support platform to pitch.

[0020] Preferably, the second drive mechanism further comprises:

[0021] a second motor located between the tray and the support platform, the second motor being vertically fixed to the support platform, the output shaft of the second motor being connected to the tray for driving the tray to rotate;

[0022] a plurality of support follower wheels, the plurality of support follower wheels being arranged circumferentially on the bottom of the tray to support on the support platform.

[0023] Preferably, the first drive mechanism comprises a traveling wheel with a drive motor mounted on the bottom of the frame.

[0024] Preferably, the image capture device is a camera, the camera being mounted on the frame by a support and being inclined to face the projection area.

[0025] Compared with the prior art, the projection screen position automatic adjustment device of the projector has the following advantages:

[0026] The adjustment device can automatically correct the deviation of the projection picture relative to the screen, so that the projection picture is automatically moved to the screen.

[0027] The foregoing summary of various implementations or examples of the technology described in this document is not intended to be an exhaustive disclosure of all of the possible specific features of the technology. BRIEF DESCRIPTION OF DRAWINGS

[0028] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0029] Figure 1 This is a view of the projector projection position automatic adjustment device provided in the embodiments of this application before adjustment.

[0030] Figure 2 The automatic adjustment device for projector projection position provided in the embodiments of this application is in the adjusted state view.

[0031] Figure 3 This is a view where the projected image and the screen are misaligned.

[0032] Figure 4 This is the view where the projected image and the screen are aligned.

[0033] Figure label:

[0034] 10-Frame; 20-First drive mechanism; 21-Walking wheel; 30-Second drive mechanism; 31-First motor; 32-Modible support rod; 33-Second motor; 34-Follow-up support wheel; 35-Spherical hinge assembly; 36-Column; 40-Support platform; 50-Tray; 60-Image capture device; 70-Processing controller; 100-Projector; 200-Projected screen; 300-Screen; 400-Background wall. Detailed Implementation

[0035] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] For keeping the following description of the embodiments of the present application clear and brief, detailed description of known functions and known components is omitted.

[0037] As shown in Figure 1 and Figure 2 , the embodiments of the present application disclose a projector 100 screen projection position automatic adjusting device, which comprises a rack 10, a servo driving mechanism, an image capturer 60 and a processing controller 70, the servo driving mechanism, the image capturer 60 and the processing controller 70 are all installed on the rack 10. The projector 100 is placed on the servo driving mechanism, and the servo driving mechanism is used to drive the projector 100 for adjusting the position and spatial posture of the projector 100 relative to the curtain 300 on the background wall 400.

[0038] The processing controller 70 is electrically connected with the electric devices in the servo driving mechanism and the image capturer 60, and the processing controller 70 controls the electric devices in the servo driving mechanism based on the image information sent by the image processor, so as to adjust the position and spatial posture of the projector 100. Specifically, as shown in Figure 3 and Figure 4 , the image capturer 60 collects image information in real time towards the direction of the background wall 400, which mainly includes the screen projection picture 200 projected on the background wall 400 by the projector 100 and the related image information of the curtain 300, and the image capturer 60 sends the image information to the processing controller 70. After receiving the image information, the processing controller 70 analyzes the image information and calculates the relative position relationship between the screen projection picture 200 and the curtain 300. Based on the relative position relationship, the processing controller 70 calculates and plans the adjusting path of the position and spatial posture of the projector 100 for moving the screen projection picture 200 to the curtain 300, and then adjusts the position and / or spatial posture of the projector 100 according to the planned adjusting path, so as to finally move the screen projection picture 200 to the appropriate position of the curtain 300. Preferably, a camera is selected as the image capturer 60.

[0039] In order to reduce the calculation difficulty and the difficulty of adjusting the position and spatial posture of the projector 100, the moving path of the screen projection picture 200 is made as a straight line path as much as possible, for example, as shown in Figure 3 , the screen projection picture 200 is first moved along a horizontal (vertical) straight line path 501 and then moved along a vertical (horizontal) straight line path 501, or the screen projection picture 200 is moved along an inclined straight line path 502.

[0040] Preferably, as shown in Figure 3 and Figure 4The relative position relationship between the projection picture 200 and the curtain 300 is calculated based on the geometric center O of the projection picture 200 and the geometric center K of the curtain 300.

[0041] There are various structures and types of servo driving mechanisms for adjusting the position and spatial posture of the projector 100. The embodiment of the present application provides a type of servo driving mechanism, which includes a first driving mechanism 20 and a second driving mechanism 30 independent of each other. The first driving mechanism 20 is used to drive the projector 100 to move forward and backward relative to the curtain 300, so as to achieve the purpose of adjusting the position of the projector 100. The second driving mechanism 30 is used to drive the projector 100 to rotate horizontally and swing in pitch, so as to achieve the purpose of adjusting the spatial posture of the projector 100.

[0042] The first driving mechanism 20 includes walking wheels 21 configured with electric motors. Four walking wheels 21 of this type are installed on the bottom of the rack 10, and the electric motors are electrically connected to the processing controller 70. The processing controller 70 adjusts the distance between the rack 10 and the curtain 300 by controlling the operation of the electric motors, so as to adjust the position of the projector 100 relative to the curtain 300.

[0043] The second driving mechanism 30 includes a column 36, a spherical hinge assembly 35, a support platform 40, a movable support rod 32, a tray 50, a first motor 31, a second motor 33, and a support follower.

[0044] The column 36 is vertically fixed to the rack 10, and the support platform 40 is located above the column 36. The spherical hinge assembly 35 is installed between the support platform 40 and the upper end of the column 36, so that the support platform 40 can swing in pitch in the vertical plane.

[0045] The tray 50 is arranged above the support platform 40, and the projector 100 is placed on the tray 50. The support platform 40 can drive the projector 100 on the tray 50 to swing in pitch in the vertical plane.

[0046] The movable support rod 32 is arranged below the support platform 40. The first motor 31 is fixed to the rack 10 and located on one side of the lower part of the movable support rod 32. The output shaft of the first motor 31 cooperates with the movable support rod 32 to drive the movable support rod 32 to move vertically, thereby driving the support platform 40 to swing in pitch. The movable support rod 32 can be configured as a lead screw structure, and the output shaft of the first motor 31 is indirectly connected to a nut sleeve. The lead screw is arranged in the nut sleeve to form a screw transmission, so as to drive the movable support rod 32 to move vertically.

[0047] The second motor 33 is arranged between the tray 50 and the support platform 40, the second motor 33 is vertically fixed on the support platform 40, the output shaft of the second motor 33 is connected to the tray 50, a plurality of follow-up supporting wheels 34 are arranged on the bottom of the tray 50, the plurality of follow-up supporting wheels 34 are arranged in a circumferential direction, so that the second motor 33 can drive the tray 50 to drive the projector 100 to rotate horizontally.

[0048] The key advantages of the adjustment device provided by the present application include at least:

[0049] The adjustment device can automatically correct the deviation of the projection picture 200 relative to the screen 300, so that the projection picture 200 is automatically moved to the screen 300.

[0050] In addition, although exemplary embodiments have been described in the present application, the scope thereof includes any and all embodiments having equivalent elements, modifications, omissions, combinations (for example, solutions cross various embodiments), adaptations or alterations based on the present application. The elements in the claims are to be construed broadly based on the language adopted by the claims, and are not limited to the examples described in the specification or during the implementation of the present application, which examples are to be construed as non-exclusive. Therefore, the specification and examples are intended to be considered only as examples, and the true scope and spirit are indicated by the following claims and the full scope of equivalents thereof.

[0051] The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more solutions thereof) can be used in combination with each other. For example, other embodiments can be used by one of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features can be grouped together to simplify the present application. This should not be interpreted as an intent to require protection of a feature of the disclosure for any claim. On the contrary, the subject matter of the present application can be less than all the features of a particular disclosed embodiment. Therefore, the following claims are incorporated into the detailed description as examples or embodiments, wherein each claim is independently a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present application should be determined with reference to the appended claims and the full scope of equivalents granted to these claims.

[0052] The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also considered to fall within the protection scope of the present application.

Claims

1. A projector projection position automatic adjusting device, characterized in that, The application relates to a projection device, comprising: a servo driving mechanism, wherein a projector is arranged on the servo driving mechanism, and the servo driving mechanism is used for position adjustment and spatial attitude adjustment of the projector; an image capturer, which is used for acquiring image information of a projection area; a processing controller, which receives the image information of the image capturer, calculates a relative position relationship between a projection picture and a screen based on the image information, calculates an adjustment path of the position and the spatial attitude of the projector for moving the projection picture to the screen based on the relative position relationship, and drives the projector by the servo driving mechanism based on the adjustment path; the servo driving mechanism comprises a first driving mechanism, which comprises walking wheels with driving motors arranged on the bottom of a rack, and is used for driving the rack to move forward and backward relative to the screen; the adjustment path comprises a straight line path along the horizontal direction first and then along the vertical direction, a straight line path along the vertical direction first and then along the horizontal direction, or a straight line path along an inclination direction.

2. The projector screen position automatic adjusting device according to claim 1, characterized in that, The processing controller calculates the relative position relationship between the projection picture and the screen based on the geometric centers of the projection picture and the screen.

3. The projector screen position automatic adjusting device according to claim 1, characterized in that, The servo driving mechanism is configured to drive the projector to move forward and backward relative to the screen and to drive the projector to rotate horizontally and to swing in the pitching direction.

4. The projector screen position automatic adjusting device according to claim 3, characterized in that, The servo driving mechanism is arranged on a rack, and the rack is provided with a tray above the rack, and the projector is placed on the tray.

5. The projector screen position automatic adjusting device according to claim 4, characterized in that, The servo driving mechanism comprises a second driving mechanism, which is used for driving the tray to rotate horizontally and to swing in the pitching direction.

6. The projector screen position automatic adjusting device according to claim 5, characterized in that, The second driving mechanism comprises: a stand column arranged on the rack; a support platform arranged above the stand column, and the tray is located on the support platform; a spherical hinge assembly arranged between the support platform and the stand column, so that the support platform can swing in the pitching direction; a movable support rod connected to the bottom of the support platform; a first motor mounted on the rack and located on one side of the lower part of the movable support rod, and an output shaft of the first motor is used for driving the movable support rod to move to drive the support platform to swing in the pitching direction.

7. The projector screen position automatic adjusting device according to claim 6, characterized in that, The second driving mechanism further comprises: a second motor located between the tray and the support platform, and the second motor is vertically fixed to the support platform, and an output shaft of the second motor is connected to the tray to drive the tray to rotate; a plurality of support follow-up wheels, which are arranged on the bottom of the tray in the circumferential direction to support the support platform.

8. The projector projection position automatic adjusting device according to claim 4, characterized in that, The image capturer is a camera, and the camera is mounted on the rack by a support and is inclined to face the projection area.

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