CN113359381A - Projection system and projection screen adjusting method - Google Patents
Projection system and projection screen adjusting method Download PDFInfo
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- CN113359381A CN113359381A CN202010149396.1A CN202010149396A CN113359381A CN 113359381 A CN113359381 A CN 113359381A CN 202010149396 A CN202010149396 A CN 202010149396A CN 113359381 A CN113359381 A CN 113359381A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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Abstract
The invention provides a projection system, which comprises a projection curtain, two or more curtain brackets and a projector. Each curtain support comprises a supporting piece, a sliding block and a driving controller, the sliding block is fixedly connected to the projection curtain and movably connected with the supporting piece, and the driving controller drives the sliding block to move so as to generate traction force for the projection curtain. The projecting apparatus is used for gathering the projection image that forms when curtain adjustment characteristic pattern projects to the projection curtain through the camera, and the reference value according to projection image and curtain adjustment characteristic pattern compares the adjustment parameter that generates two or more than two curtain supports and sends to drive controller, so that drive controller judges whether projection curtain fixed mounting levels according to the adjustment parameter drive, and move the traction force that produces the projection curtain according to adjustment parameter slider, thereby make the projection curtain level and level fixed mounting wall, reach best projection effect, be favorable to improving user's viewing experience. The invention further provides a projection screen cloth adjusting method.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a projection system and a projection screen cloth adjusting method.
Background
Projectors are used more and more widely in modern life, especially in the fields of education and household televisions, but a large amount of time is often spent on adjusting the position of a projection screen in the manual installation process, so that the projection screen is flatly fixed to achieve the optimal viewing effect.
At present, the adjustment of projection curtain can select for use automatic adjustment's curtain support to realize, but, current automatic adjustment's curtain support utilizes the photo sensor sensing projector projection light that sets up at the support main part, and the controller receives sensing signal to according to sensing signal control curtain mounting panel displacement on the slide rail, thereby drive the curtain and slowly move on the slide rail, until photo sensor detection signal disappears or vibration sensor produces vibration signal. The curtain support capable of being automatically adjusted is relatively dependent on the precision of the sensor, and whether the surface of the curtain is flat or not cannot be automatically detected.
Disclosure of Invention
In view of the above, the present invention provides a projection system and a projection screen adjusting method to improve the above problems.
In a first aspect, an embodiment of the present invention provides a projection system, which includes a projection curtain, two or more curtain brackets, and a projector, where each curtain bracket includes a support, a slider, and a driving controller, the slider is fixedly connected to the projection curtain and movably connected to the support, and the driving controller drives the slider to move to generate a traction force for the projection curtain. The projector is used for collecting a projection image formed when the curtain adjustment characteristic pattern is projected to the projection curtain through the camera, and comparing the reference value of the projection image and the reference value of the curtain adjustment characteristic pattern to generate two or more adjustment parameters of the curtain supports and sending the adjustment parameters to the driving controller, so that the driving controller drives the sliding block to move according to the adjustment parameters to generate traction force on the projection curtain.
In some embodiments, the drive controller is configured to drive the slide to move in three dimensions relative to the support.
In some embodiments, the two or more curtain supports include a first support, a second support, a third support and a fourth support, the projection curtain has four corners, and the first support, the second support, the third support and the fourth support are correspondingly connected to the four corners.
In some embodiments, the curtain adjustment feature pattern includes a plurality of first stripes and a plurality of second stripes, the plurality of first stripes are equally spaced and parallel, the plurality of second stripes are equally spaced and parallel, and the plurality of second stripes are perpendicular to the first stripes; the projection image includes a plurality of first projection stripes corresponding to the plurality of first stripes and a second projection stripe corresponding to the plurality of second stripes.
In some embodiments, the size of the projected image is greater than or equal to the size of the projection screen.
In a second aspect, an embodiment of the present invention provides a projection screen adjusting method, adapted to adjust a projection screen installed on two or more screen brackets, where each screen bracket includes a supporting member, a sliding block and a driving controller, the sliding block is fixedly connected to the projection screen and movably connected to the supporting member, and the driving controller drives the sliding block to move, the method includes: the driving controller receives the adjusting parameters of two or more curtain brackets; the adjustment parameters are generated by comparing the projection image with the reference value of the curtain adjustment characteristic pattern through the projector, and the projection image is an image formed when the curtain adjustment characteristic pattern is projected to the projection curtain; and the driving controller drives the corresponding slide block to move according to the adjusting parameters so as to generate traction force on the projection curtain.
In some embodiments, the driving controller drives the corresponding slide block to move to generate the traction force to the projection curtain according to the adjustment parameter, including: the driving controller drives the sliding block to do three-dimensional motion relative to the supporting piece according to the adjusting parameters so as to generate traction force on the projection curtain.
In some embodiments, the adjustment parameters include displacement parameters and a bracket identification, and the displacement parameters include a displacement value and a displacement direction of the drive controller to drive the slider to displace; the support identification comprises a support address identification or a support frequency band identification, and the support identification is used for identifying the curtain support corresponding to the displacement parameter.
In some embodiments, the driving controller drives the corresponding slide block to move to generate the traction force to the projection curtain according to the adjustment parameter, including: if the displacement parameter is less than or equal to the displacement adjustment threshold, stopping driving the corresponding slide block to move; and if the displacement parameter is larger than the displacement adjustment threshold, driving the corresponding slide block to move according to the displacement parameter.
In some embodiments, the driving controller drives the corresponding slide block to move to generate the traction force to the projection curtain according to the displacement parameter, including: if the displacement parameter is greater than or equal to the displaceable threshold value, driving the corresponding slide block to move according to the displaceable threshold value; the displaceable threshold value is a displacement value of the sliding block relative to the support; and if the displacement parameter is smaller than the displaceable threshold value, driving the corresponding slide block to move according to the displacement parameter.
In the projection system and the projection screen adjusting method provided by the embodiment of the invention, the projection screen is connected with the slide blocks of two or more than two screen supports, the projector acquires a projection image formed when the screen adjustment characteristic pattern is projected to the projection screen through the camera, and generates adjustment parameters of the two or more than two screen supports according to comparison between the projection image and the reference value of the screen adjustment characteristic pattern and sends the adjustment parameters to the driving controller corresponding to the screen supports. Whether projection curtain fixed mounting is level and smooth can be judged according to the received adjustment parameter to drive the slider and remove in order to produce the traction force to the projection curtain according to the adjustment parameter, thereby make the projection curtain can level and land fixed mounting wall, in order to reach the best projection effect, be favorable to improving user's the experience of watching.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a projection system according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a curtain bracket of the projection system shown in FIG. 1.
Fig. 3 is a schematic block diagram of a structure of a projector of the projection system shown in fig. 1.
FIG. 4 is a schematic diagram of a curtain adjustment feature pattern of the projection system shown in FIG. 1.
Fig. 5 is a schematic diagram of the projection image of the projection system shown in fig. 1 in a first projection state.
FIG. 6 is a schematic diagram of the projection image of the projection system of FIG. 1 in a second projection state.
Fig. 7 is a schematic diagram of the projection image of the projection system shown in fig. 1 in a third projection state.
Fig. 8 is a schematic diagram of the projection image of the projection system shown in fig. 1 in a fourth projection state.
Fig. 9 is a schematic flow chart of a curtain adjusting method according to an embodiment of the present invention.
Fig. 10 is a schematic flow chart of another curtain adjusting method according to an embodiment of the present invention.
Fig. 11 is a schematic flow chart of another curtain adjusting method according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The specification and claims do not intend to distinguish between components that differ in name but not function.
Referring to fig. 1, an embodiment of the invention provides a projection system 10, where the projection system 10 includes a projection curtain 100, two or more curtain brackets 200, and a projector 300. The projection curtain 100 is fixedly installed by two or more curtain brackets 200, for example, two or more curtain brackets 200 are fixedly installed on the installation wall 400 and connected with the projection curtain 100, so that the projector 300 projects onto the projection curtain 100, thereby satisfying the viewing requirements of users.
In the present embodiment, the projection screen 100 is a screen that displays images in cooperation with the projector 300, and can be foldable, and the projection screen 100 can be folded or rolled up to be stored when not in use, thereby reducing the floor space of the projection screen 100. Further, the projection curtain 100 may be a square curtain, the projection curtain 100 having four corners 101.
In practical use, the projection curtain 100 is flatly fixed on the installation wall 400 to achieve the best viewing effect, and it should be noted that the projection curtain 100 is flatly fixed on the installation wall 400, which means that the projection curtain 100 is completely unfolded on the installation wall 400, and the plane of the projection curtain 100 is parallel to the installation wall 400. In other embodiments, the projection screen 100 may be a screen of other shapes.
In the present embodiment, the two or more curtain brackets 200 are, for example, 4 curtain brackets, and include a first bracket 201, a second bracket 203, a third bracket 205, and a fourth bracket 207. The first bracket 201, the second bracket 203, the third bracket 205 and the fourth bracket 207 are correspondingly connected to the four top corners 101 in the clockwise direction. Wherein the first bracket 201 and the third bracket 205 are diagonally arranged, and the second bracket 203 and the fourth bracket 207 are diagonally arranged. In other embodiments, the two or more curtain brackets 200 may be two curtain brackets 200, for example, and the two curtain brackets 200 may be disposed opposite to each other and correspondingly connected to the two opposite side ends of the projection curtain 100.
Referring to fig. 2, each curtain bracket 200 of two or more curtain brackets 200 includes a supporting member 210, a sliding block 230, and a driving controller 250, and the supporting member 210 is used to connect with a mounting wall surface 400, so that the curtain brackets 200 are fixedly connected to the mounting wall surface 400. The slider 230 is movably connected to the support 210 and can move in three dimensions relative to the support 210 under the control of the driving controller 250. The slide block 230 is fixedly connected to the projection screen 100 and generates a traction force on the projection screen 100 when the driving controller 250 drives the slide block 230 to move.
As an embodiment, the sliding block 230 may be connected to the supporting member 210 through a sliding rail, a pulling rope, a connecting arm, and the like, which are controlled by the driving controller 250 to pull the sliding block 230 in different directions, so that the sliding block 230 can move in three dimensions relative to the supporting member 210.
Referring to fig. 2 again, the driving controller 250 may include a communication module 251 and a motor control module 253, wherein the communication module 251 is configured to be communicatively connected to the projector 300 and receive the adjustment parameter sent by the projector 300. The communication module 251 may be a wireless communication module, such as a WIFI communication module, a bluetooth communication module, etc. The motor control module 253 is configured to perform three-dimensional motion control on the slider according to the adjustment parameter received by the communication module 251, for example, the driving controller 250 may further include a single chip, a driving circuit, and three driving motors, and the motor control module 253 controls the three driving motors to work according to the adjustment parameter to drive the slider 230 to move in three directions, where the three directions may be three orthogonal directions in space, for example, XYZ directions in an XYZ coordinate system, so that the slider 230 performs three-dimensional motion relative to the support 210.
In this embodiment, the sliders 230 corresponding to the first support 201, the second support 203, the third support 205, and the fourth support 207 can perform three-dimensional motion under the driving of the corresponding driving controllers 250, and the motion directions may be different, so as to achieve traction forces in different directions of the projection curtain 100, so as to adjust the projection curtain 100 to be flat.
Referring to fig. 3, the projector 300 may include a projection host 310, a camera 330, and an image processing module 350. The projection host 310 projects the curtain adjustment feature pattern 301, the camera 330 collects a projection image 303 generated when the curtain adjustment feature pattern 301 is projected onto the projection curtain 100, and the image processing module 350 generates two or more adjustment parameters of the curtain support 200 according to comparison between the projection image 303 and a reference value of the curtain adjustment feature pattern 301. Projector 300 may further include a communication module 370, and in this embodiment, communication module 370 may be a wireless communication module, such as a WIFI communication module, a bluetooth communication module, or the like. The communication module 370 is configured to communicate with the communication module 251 of the curtain bracket 200 to send the adjustment parameter to the curtain bracket 200, so that the driving controller 250 can drive the sliding block 230 to generate the traction force on the projection curtain 100 according to the adjustment parameter.
Referring to fig. 4, the curtain adjustment feature pattern 301 is a pattern for calibrating whether the projection curtain is flat, the curtain adjustment feature pattern 301 includes a plurality of first stripes 3011 and a plurality of second stripes 3013, the plurality of first stripes 3011 are arranged in parallel at equal intervals, the plurality of second stripes 3013 are arranged in parallel at equal intervals, and the plurality of second stripes 3013 are perpendicular to the first stripes 3011.
The camera 330 is disposed on the projection host 310 and is configured to capture a projection image 303 generated when the curtain adjustment feature pattern 301 is projected onto the projection curtain 100. When the curtain adjustment feature pattern 301 is the pattern shown in fig. 4, accordingly, as shown in fig. 1, the projection image 303 includes a plurality of first projection stripes 3031 corresponding to the plurality of first stripes 3011 and a second projection stripe 3033 corresponding to the plurality of second stripes 3013. The size of the projected image 303 may be greater than or equal to the size of the projection screen 100 so that the projected image 303 can completely cover the projection screen 100, thereby facilitating comparison of the projected image 303 and the screen adjustment feature pattern 301.
The arrangement of camera 330 enables projector 300 to have both projection and image acquisition functions. Camera 330 may be a separate component from the projection lens. In some embodiments, camera 330 may also share a lens assembly with a projection lens.
The image processing module 350 is connected to the camera 330 and the projection host 310, and is configured to generate two or more adjustment parameters of the curtain support 200 according to the comparison between the projected image 303 and the reference values of the curtain adjustment feature pattern 301.
In this embodiment, the reference values of the projected image 303 and the curtain adjustment feature pattern 301 may include at least one of a reference value of the flatness of the first projected stripe 3031 with respect to the first stripe 3011, a reference value of the flatness of the second projected stripe 3033 with respect to the second stripe 3013, reference values of the pitch of the plurality of first projected stripes 3031 and the pitch of the plurality of first stripes 3011, a reference value of the pitch of the plurality of second projected stripes 3033 and the pitch of the plurality of second projected stripes 3033, and the like. The reference values of the projected image 303 and the curtain adjustment feature pattern 301 are used to calculate adjustment parameters of two or more curtain brackets 200 when the projected image 303 is adjusted to coincide with the curtain adjustment feature pattern 301. In this embodiment, the adjustment parameters of the curtain holder 200 are, for example, the displacement direction and the displacement value of the slide block 230 that needs to perform three-dimensional movement relative to the support member 210.
Taking the three-dimensional motion of the slider in the XYZ coordinate system space as an example, as shown in fig. 3, the extending direction of the first stripe 3011 is the X direction, the extending direction of the second stripe 3013 is the Y direction, and the direction perpendicular to the first stripe 3011 and the second stripe 3013 is the Z direction, so that a spatial coordinate system orthogonal to each other with the X direction, the Y direction, and the Z direction as XYZ axes can be established on the projection curtain 100.
In fig. 5 to 8, the curtain adjustment feature pattern 301 is shown by a solid line, and the projection image 303 is shown by a broken line. A solid line extending in the X direction is the first stripe 3011, and a dotted line is the first projected stripe 3031. The solid line extending in the Y direction is the second stripe 3013, and the dotted line is the second projected stripe 3033.
Referring to fig. 5, if the projected image 303 is in the first projection state: the first projected stripe 3031 has unevenness in the X direction, that is, the first projected stripe 3031 has a deformation shift in the Y direction with respect to the first stripe 3011. The adjustment parameter may be calculated as a displacement value of the slider 230 of the curtain support 200 to displace along the Y direction according to the reference value of the flatness of the first projected stripe 3031 relative to the first stripe 3011, so that the slider 230 moves along the Y direction under the driving of the driving controller 250 and provides a traction force of the projection curtain 100 in the Y direction.
Referring to fig. 6, if the projected image 303 is in the second projection state: the second projected stripe 3033 is uneven in the Y direction, that is, the second projected stripe 3033 is deformed and shifted in the X direction relative to the second stripe 3013. Based on the reference value of the flatness of the second projected stripes 3033 relative to the second stripes 3013, the adjustment parameter can be calculated as the displacement value of the slide block 230 of the curtain bracket 200 to displace along the X direction, so that the slide block 230 moves along the Y direction under the driving of the driving controller 250 and provides the traction force of the projection curtain 100 along the X direction.
Referring to fig. 7, if the projected image 303 is in the third projection state: the distance between the first projection stripes 3031 decreases sequentially along the Y direction, that is, the plane of the projection curtain 100 is inclined to the preset projection plane to form an included angle. Based on the reference values of the pitch of the first projected stripes 3031 and the pitch of the first stripes 3011, the adjustment parameter can be calculated as a displacement value of the slide block 230 of the curtain bracket 200 to displace along the Z direction, so that the slide block 230 moves along the Z direction under the driving of the driving controller 250 and provides the traction force of the projection curtain 100 along the Z direction.
Referring to fig. 8, if the projection image 303 is in the fourth projection state: the distance between the second projection stripes 3033 decreases sequentially along the X direction, that is, the plane on which the projection curtain 100 is located is inclined to the preset projection plane to form an included angle. Based on the reference values of the pitch of the second projected stripes 3033 and the pitch of the second stripes 3013, the adjustment parameter can be calculated as a displacement value of the slide block 230 of the curtain bracket 200 to displace along the Z-direction, so that the slide block 230 moves along the Z-direction under the driving of the driving controller 250 and provides a traction force of the projection curtain 100 along the Z-direction.
In some embodiments, the projected image 303 may be in a mixture of one or more of the first projection state, the second projection state, the third projection state, and the fourth projection state. The adjustment parameters may be labeled as a displacement direction and a displacement value in XYZ directions, wherein the displacement direction and the displacement value may be calculated from the above-mentioned reference values of the projection image 303 and the curtain adjustment feature pattern 301, and the driving controller 250 controls the slider 230 to move along the displacement direction and the displacement value in the adjustment parameters according to the adjustment parameters, thereby generating a traction force to the projection curtain 100 to flatten the projection curtain 100.
Further, the displacement direction and the displacement amount in the adjustment parameters may represent (X, Y, Z), for example, the adjustment parameters (0,1, -1) represent that the movement is not performed in the X direction, the movement is performed by 1 moving unit in the Y direction, and the movement is performed by 1 moving unit in the-Z direction. The displacement direction is indicated by a sign, a positive sign indicates positive movement in the XYZ direction, and a negative sign indicates negative movement in the XYZ direction. The displacement is expressed in numerical value, and the unit of the displacement is a moving unit, and the moving unit is used for representing the size of the displacement, and can be a customized length, such as 0.5cm, 1cm, and the like.
As an embodiment, the unit of movement of the amount of displacement in the adjustment parameter may be converted into a control signal for driving the slider 230 by the driving controller 250, and the conversion relationship may be freely set within an appropriate range. Here, if the control time is set to a constant value, the displacement amount can be obtained by simply setting the relationship between the acceleration and the movement unit, where a may be kn and k is a constant coefficient for controlling the length of the movement unit. Further, the displacement amount may be calculated by the constant control time and the acceleration, so that the driving controller 250 may drive the slider 230 to displace the displacement amount in the adjustment parameter.
Further, if the driving controller 250 includes three driving motors for driving the slider 230 to move in three directions, the displacement direction in the adjustment parameter can be converted into an electrical signal sent by the driving controller 250 to the driving motors, and the electrical signal controls the driving motors for driving the slider 230 to move in the displacement direction to operate, and the slider 230 is displaced along the displacement amount. For example, adjusting the parameters (1,0,0), the electric signal of the driving controller 250 operates the driving motor that drives the slider 230 to move in the X direction and drives the slider 230 to move 1 movement unit in the X direction.
In addition, the adjustment parameter may further include a support address identifier or a support frequency band identifier, where the support address identifier or the support frequency band identifier may be used to identify the curtain support 200 corresponding to the adjustment parameter, so as to send the adjustment parameter of the slider 230 of the corresponding curtain support 200 to the corresponding driving controller 250, thereby performing driving control on the slider 230 of the curtain support 200. In this embodiment, first rack 201, second rack 203, third rack 205, and fourth rack 207 may correspond to address representations a1, a2, A3, and a4, respectively. The tuning parameters (a2, x, y, z) are shown as corresponding to the tuning parameters of the second support 203, and are similar to the above. If the bracket frequency band identifier is adopted, the communication modules 251 of the first bracket 201, the second bracket 203, the third bracket 205 and the fourth bracket 207 are respectively provided with 4 different transmission frequency bands to communicate with the communication module 370 of the projector 300.
Referring to fig. 8, an embodiment of the invention provides a projection screen adjusting method, which is suitable for the screen support 200 of the projection system 10 and is performed by the driving controller 250 of the screen support 200. The projection screen adjusting method may include steps S101 to S103.
Step S101: the drive controller receives adjustment parameters for two or more curtain supports.
In the present embodiment, the adjustment parameter is generated by the projector based on a comparison between the projected image 303 and the reference value of the curtain adjustment feature pattern 301, and the projected image 303 is an image formed when the curtain adjustment feature pattern 301 is projected onto the projection curtain 100. The generation process of the adjustment parameter can refer to the foregoing, and is not described herein again.
The adjustment parameters include displacement parameters and stent identifications, and each drive controller 250 can acquire the corresponding adjustment parameters according to the stent identifications; each driving controller 250 may drive the corresponding slider 23 to move by a corresponding displacement value and displacement direction according to the displacement parameters. Taking the stent identifier as the stent address identifier and taking the three-dimensional motion of the XYZ spatial coordinate system as an example, the adjustment parameters may be, for example, (a1,1,0,0), (a2,1,0,0), (A3,0,0,1) and (a4,0, -1, 0).
Step S103: and the driving controller drives the corresponding slide block to move according to the adjustment parameters so as to generate traction force on the projection curtain.
As described above, taking the adjustment parameters (a1,1,0,0), (a2,1,0,0), (A3,0,0,1) and (a4,0, -1,0) as an example, the adjustment parameters received by the driving controller 250 of the first carriage 201 are (a1,1,0,0) and the displacement parameters are 1,0,0, so that the driving controller 250 drives the slider 230 of the first carriage 201 to displace by one moving unit in the X direction relative to the support member 210 without moving in the Y direction and the Z direction; the driving controller 250 of the second supporter 203 receives the adjustment parameter (a2,1,0,0) and the displacement parameter (a 0,0), so that the driving controller 250 drives the slider 230 of the second supporter 203 to displace by one moving unit in the X direction with respect to the support 210 without moving in the Y direction and the Z direction; the driving controller 250 of the third carriage 205 receives the adjustment parameter of (a3,0,0,1) and the displacement parameter of 0,0,1, so that the driving controller 250 drives the slider 230 of the third carriage 205 to displace by one moving unit in the Z direction with respect to the support 210 without moving in the X direction and the Y direction; the driving controller 250 of the fourth supporter 207 receives the adjustment parameter (a4,0, -1,0) and the displacement parameter (a-1, 0), so that the driving controller 250 drives the slider 230 of the fourth supporter 207 to displace a moving unit in the opposite direction of the Y direction with respect to the support 210 without moving in the X direction and the Z direction. Thus, the driving controllers 250 of the first support 201, the second support 203, the third support 205 and the fourth support 207 respectively drive the corresponding sliding blocks 230 to make three-dimensional motion relative to the supporting members 210 according to the received adjustment parameters, and generate traction force to the projection curtain 100 in the process of the three-dimensional motion, so as to adjust the projection curtain 100 to be flat, thereby improving the projection viewing effect. Further, after the driving controller 250 drives the corresponding slide 230 to move according to the adjustment parameter, a feedback signal is generated to feedback that the driving controller 250 has adjusted the curtain bracket 200 according to the adjustment parameter. In some embodiments, the projector 300 generates new adjustment parameters again, and the driving controller 250 re-executes steps S101 to S103 until the projection curtain 100 is fixed and flat.
In the projection system 10 and the projection screen adjusting method provided by the embodiment of the invention, the driving controller 250 arranged on the screen support 200 can judge whether the fixed installation of the projection screen 100 is flat or not according to the received adjustment parameters of two or more screen supports 200, and drive the sliding block 230 to move according to the adjustment parameters to generate the traction force on the projection screen 100, so that the projection screen 100 can be flatly fixed on the installation wall surface 400, the optimal projection effect is achieved, and the viewing experience of a user is improved.
Referring to fig. 10, another method for adjusting a projection curtain is provided, which is suitable for the curtain bracket 200 of the projection system 10 and is performed by the driving controller 250 of the curtain bracket 200. Specifically, the projection screen adjusting method may include steps S201 to S205.
Step S201: the drive controller receives adjustment parameters for two or more curtain supports.
In this embodiment, the method for acquiring the adjustment parameter in step S201 is the same as that in step S101, and is not described herein again.
Step S203: and if the displacement parameter is less than or equal to the displacement adjustment threshold value, stopping driving the corresponding slide block to move.
The displacement adjustment threshold may be a minimum displacement value of the driving controller 250 driving the slider 230 of the curtain bracket 200 to move relative to the support 210, which is a preset parameter value. In a certain displacement direction, if the displacement value of the displacement parameter is less than or equal to the displacement adjustment threshold, it can be determined that the projection curtain 100 is approximately flatly and fixedly installed in the displacement direction, and the sliding block 230 of the curtain bracket 200 does not need to be controlled to move relative to the supporting member 210 along the displacement direction to pull the projection curtain 100, and at this time, the corresponding sliding block 230 is stopped from being driven to move along the displacement direction. Whether the adjustment of the curtain support 200 is completed or not can be judged by comparing the displacement value of the displacement parameter with the displacement adjustment threshold value, and when the displacement values in all directions are smaller than the displacement adjustment threshold value, the adjustment of the curtain support 200 can be considered to be completed.
Taking the example that the first support 201 receives the adjustment parameter (0.01,0,0), the displacement adjustment threshold may be 0.02 moving unit, and at this time, the adjustment displacement value of the slider 230 of the first support 201 in the X direction is 0.01 moving unit, which is smaller than the displacement adjustment threshold, and the driving controller 250 of the first support 201 does not drive the slider 230 to move in the X direction, that is, the driving controller 250 stops driving the slider 230 to move in the X direction.
Step S205: and if the displacement parameter is larger than the displacement adjustment threshold, driving the corresponding slide block to move according to the displacement parameter.
On the contrary, in a certain displacement direction, if the displacement value of the displacement parameter is greater than the displacement adjustment threshold, the driving controller 250 may drive the corresponding slider 230 to move along the displacement direction relative to the supporting member 210 according to the displacement parameter. Taking the example that the first support 201 receives the adjustment parameter (-1,0.2,0), the displacement adjustment threshold may be 0.02 moving unit, at this time, the adjustment displacement value of the slider 230 of the first support 201 in the X direction is 1 moving unit, which is greater than the displacement adjustment threshold, the driving controller 250 of the first support 201 drives the slider 230 to move 1 moving unit in the negative direction of the X direction, the adjustment displacement value of the slider 230 of the first support 201 in the Y direction is 0.2 moving unit, which is greater than the displacement adjustment threshold, and the driving controller 250 of the first support 201 drives the slider 230 to move 1 moving unit in the positive direction of the Y direction.
In the projection curtain adjusting method provided by the embodiment of the invention, the driving controller 250 arranged on the curtain support 200 can judge whether the fixed installation of the projection curtain 100 is smooth or not according to the received adjusting parameters of two or more curtain supports 200, and drive the sliding block 230 to move according to the adjusting parameters so as to generate the traction force on the projection curtain 100, so that the projection curtain 100 can be flatly fixed on the installation wall 400, the optimal projection effect is achieved, and the viewing experience of a user is improved. Meanwhile, the corresponding slide block 230 is driven according to the comparison between the displacement parameter and the displacement adjustment threshold value, which is helpful for judging the adjustment completion condition of the curtain support 200 and terminating the adjustment of the curtain support 200 in time.
Referring to fig. 11, another projection screen adjusting method suitable for the curtain bracket 200 of the projection system 10 is provided in the embodiment of the present invention and is executed by the driving controller 250 of the curtain bracket 200. Specifically, the projection screen adjusting method may include steps S301 to S305.
Step S301: the drive controller receives adjustment parameters for two or more curtain supports.
In this embodiment, the method for acquiring the adjustment parameter in step S301 is the same as that in step S101, and is not described herein again.
Step S303: and if the displacement parameter is greater than or equal to the displaceable threshold value, driving the corresponding slide block to move according to the displaceable threshold value.
Wherein the displaceable threshold is a maximum displacement value of the slider 230 relative to the support 210. Since the sliding block 230 generates a traction force on the projection screen 100 when moving relative to the supporting member 210, and the size of the projection screen 100 is a certain value, the displacement value of the sliding block 230 relative to the supporting member 210 has a limit to prevent the projection screen 100 from being damaged due to excessive displacement of the sliding block 230 relative to the supporting member 210.
If the displacement parameter is greater than or equal to the displaceable threshold, the corresponding slider 230 may be damaged by driving the corresponding slider 230 to move according to the displacement parameter, and thus the corresponding slider 230 is driven to move according to the displaceable threshold.
Taking the first support 201 receiving the adjustment parameter (20,0,0) as an example, the displaceable threshold may be 10 moving units, and at this time, the adjustment displacement value of the slider 230 of the first support 201 in the X direction is 20 moving units, and is greater than the displaceable threshold, and the driving controller 250 of the first support 201 drives the slider 230 to move 10 moving units in the positive direction of the X direction. It can be understood that, when the displacement parameter is greater than the displaceable threshold, the displacement direction of the slider of the curtain bracket 200 that needs to be correspondingly adjusted is the displacement direction in the displacement parameter, and the displacement value is the displaceable threshold.
Step S305: and if the displacement parameter is smaller than the displaceable threshold value, driving the corresponding slide block to move according to the displacement parameter.
When the displacement parameter is smaller than the displaceable threshold, the movement of the slider 230 relative to the support 210 will not damage the projection curtain 100, and the corresponding slider 230 can be driven to move according to the displacement parameter, so that the corresponding slider 230 is located at the corresponding position, thereby realizing the traction of the projection curtain 100.
Taking the first support 201 receiving the adjustment parameter (8,0,0) as an example, the displaceable threshold may be 10 mobile units, and at this time, the adjustment displacement value of the slider 230 of the first support 201 in the X direction is 8 mobile units, and is smaller than the displaceable threshold, and the driving controller 250 of the first support 201 drives the slider 230 to move 8 mobile units in the positive direction of the X direction. It can be understood that, when the displacement parameter is less than or equal to the displaceable threshold, the displacement direction of the slider of the curtain bracket 200 that needs to be correspondingly adjusted is the displacement direction in the displacement parameter, and the displacement value is the displacement value in the displacement parameter.
In the projection curtain adjusting method provided by the embodiment of the invention, the driving controller 250 arranged on the curtain support 200 can judge whether the fixed installation of the projection curtain 100 is smooth or not according to the received adjusting parameters of two or more curtain supports 200, and drive the sliding block 230 to move according to the adjusting parameters so as to generate the traction force on the projection curtain 100, so that the projection curtain 100 can be flatly fixed on the installation wall 400, the optimal projection effect is achieved, and the viewing experience of a user is improved. Meanwhile, the corresponding sliding block 230 is driven according to the comparison between the displacement parameter and the displaceable threshold value, which is helpful for determining the displacement range of the sliding block 230 relative to the supporting member 210, and prevents the projection curtain 100 from being damaged due to over-traction.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two elements, or they may be connected only through surface contact or through surface contact of an intermediate member. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Claims (10)
1. A projection system, comprising:
a projection screen;
the device comprises two or more curtain supports, each curtain support comprises a supporting piece, a sliding block and a driving controller, the sliding block is fixedly connected to the projection curtain and movably connected with the supporting piece, and the driving controller drives the sliding block to move so as to generate traction force on the projection curtain; and
the projector is used for acquiring a projection image formed by projecting a curtain adjustment characteristic pattern to the projection curtain through a camera, and generating adjustment parameters of the two or more curtain supports according to the comparison of the projection image and a reference value of the curtain adjustment characteristic pattern, and sending the adjustment parameters to the driving controller so that the driving controller drives the sliding block to move to generate traction force for the projection curtain.
2. The projection system of claim 1, wherein the drive controller is configured to drive the slider in three-dimensional motion relative to the support.
3. The projection system of claim 2, wherein the two or more curtain supports comprise a first support, a second support, a third support, and a fourth support, the projection curtain has four corners, and the first support, the second support, the third support, and the fourth support are connected to the four corners.
4. The projection system of claim 1, wherein the curtain adjustment feature pattern comprises a plurality of first stripes and a plurality of second stripes, the plurality of first stripes being equally spaced and parallel, the plurality of second stripes being equally spaced and parallel, and the plurality of second stripes being perpendicular to the first stripes; the projection image includes a plurality of first projection stripes corresponding to the plurality of first stripes and the second projection stripes corresponding to the plurality of second stripes.
5. The projection system of claim 1, wherein the size of the projected image is greater than or equal to the size of the projection screen.
6. A projection curtain adjusting method is characterized in that the method is suitable for adjusting projection curtains arranged on two or more curtain brackets, each curtain bracket comprises a supporting piece, a sliding block and a driving controller, the sliding block is fixedly connected to the projection curtain and movably connected with the supporting piece, and the driving controller drives the sliding block to move, and the method comprises the following steps:
the drive controller receives the adjustment parameters of the two or more curtain brackets; the adjustment parameters are generated by comparing a projection image with a reference value of a curtain adjustment characteristic pattern through a projector, wherein the projection image is an image formed when the curtain adjustment characteristic pattern is projected to the projection curtain; and
and the driving controller drives the corresponding slide block to move according to the adjusting parameter so as to generate traction force on the projection curtain.
7. The projection screen adjusting method of claim 6, wherein the driving controller drives the corresponding slide block to move to generate the traction force for the projection screen according to the adjustment parameter, and the driving controller comprises:
and the driving controller drives the sliding block to do three-dimensional motion relative to the supporting piece according to the adjusting parameters so as to generate traction force on the projection curtain.
8. The projection screen adjusting method of claim 6, wherein the adjusting parameters include a displacement parameter and a bracket identifier, and the displacement parameter includes a displacement value and a displacement direction of the driving controller for driving the slider to displace; the support identification comprises a support address identification or a support frequency band identification, and the support identification is used for identifying the curtain support corresponding to the displacement parameter.
9. The projection screen adjusting method of claim 8, wherein the driving controller drives the corresponding slide block to move to generate the traction force for the projection screen according to the adjustment parameter, and the driving controller comprises:
if the displacement parameter is less than or equal to a displacement adjustment threshold value, stopping driving the corresponding slide block to move;
and if the displacement parameter is larger than a displacement adjustment threshold value, driving the corresponding slide block to move according to the displacement parameter.
10. The projection screen adjusting method of claim 8, wherein the driving controller drives the corresponding slide block to move to generate the traction force for the projection screen according to the displacement parameter, comprising:
if the displacement parameter is larger than or equal to the displaceable threshold value, driving the corresponding slide block to move according to the displaceable threshold value; the displaceable threshold is a displacement value at which the slider can be displaced relative to the support;
and if the displacement parameter is smaller than the displaceable threshold value, driving the corresponding slide block to move according to the displacement parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010149396.1A CN113359381A (en) | 2020-03-04 | 2020-03-04 | Projection system and projection screen adjusting method |
| PCT/CN2020/142128 WO2021174989A1 (en) | 2020-03-04 | 2020-12-31 | Projection system and method for adjusting projection screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010149396.1A CN113359381A (en) | 2020-03-04 | 2020-03-04 | Projection system and projection screen adjusting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114217501A (en) * | 2021-12-14 | 2022-03-22 | 浙江吉利控股集团有限公司 | Vehicle with a steering wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9514716B2 (en) * | 2012-10-19 | 2016-12-06 | Casio Computer Co., Ltd. | Projection apparatus, projection control apparatus, projection system, and projection state adjustment method |
| CN103995417B (en) * | 2014-05-27 | 2016-02-17 | 海信集团有限公司 | Optical projection system |
| CN208044289U (en) * | 2017-12-12 | 2018-11-02 | 成都市极米科技有限公司 | A kind of Adjustable picture frame curtain and curtain adjusting apparatus |
| CN108737803A (en) * | 2018-05-02 | 2018-11-02 | 黄山 | A kind of laser television and its focusing method with focusing mechanism |
| US11022814B2 (en) * | 2018-05-16 | 2021-06-01 | Disney Enterprises, Inc. | High speed projection onto dynamic moving objects |
| CN110501869A (en) * | 2018-05-18 | 2019-11-26 | 深圳光峰科技股份有限公司 | Projection screen and optical projection system including projection screen |
| CN110213553A (en) * | 2019-06-04 | 2019-09-06 | 福建星网视易信息系统有限公司 | A kind of image projecting method and storage medium suitable for non-flat screen |
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| CN114217501A (en) * | 2021-12-14 | 2022-03-22 | 浙江吉利控股集团有限公司 | Vehicle with a steering wheel |
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