CN113299172A - Dynamic physical sand table and dynamic display control method thereof - Google Patents
Dynamic physical sand table and dynamic display control method thereof Download PDFInfo
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- CN113299172A CN113299172A CN202110523165.7A CN202110523165A CN113299172A CN 113299172 A CN113299172 A CN 113299172A CN 202110523165 A CN202110523165 A CN 202110523165A CN 113299172 A CN113299172 A CN 113299172A
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Abstract
The invention relates to the technical field of sand table display, and provides a dynamic physical sand table and a dynamic display control method thereof, wherein the method comprises the following steps: the pixel modular units are distributed in an array mode, and each pixel modular unit comprises a plurality of pixel stand columns; the plurality of pixel columns are in signal connection with two signal gating devices through address signal lines, the two signal gating devices are connected with the first controller, and the two signal gating devices are connected with the first controller through height signal lines; each pixel upright post is connected with a driving device, the driving device is connected with a second controller, and the second controller is connected with two address signal lines corresponding to the pixel upright posts through an AND gate and used for controlling the driving device to drive the selected pixel upright posts to ascend and descend according to the preset height signal. The invention can utilize the pixel modular units to assemble a physical sand table with any size and high resolution, and any pixel column can independently control the lifting of the physical sand table to change to the designated physical height, thereby realizing dynamic display.
Description
Technical Field
The invention relates to the technical field of sand table display, in particular to a dynamic physical sand table and a dynamic display control method thereof.
Background
The sand table is a model which is piled up by silt, military chess and other materials according to a certain proportion relation of a topographic map, an aviation photograph or a field topography, and macroscopic objects can be visually displayed through the sand table. At present, most of sand tables are still static fixed, namely, models are made at one time according to requirements, cannot be adjusted and modified, and are disassembled and discarded after being used, so that manpower and material resources are wasted, and the using effect is poor; still some sand tables adopt digital sand tables, but the input cost is high, and the use universality is low.
Disclosure of Invention
The invention provides a dynamic physical sand table and a dynamic display control method thereof, which can be assembled into a physical sand table with any size and high resolution by using pixel modular units, and any pixel upright post of the physical sand table can be independently controlled to be lifted and changed to a specified physical height, thereby realizing dynamic display of various spatial contents of terrains, cities and the like, and having low manufacturing cost.
The invention provides a dynamic physical sand table, comprising: the pixel modular units are distributed in an array mode and each pixel modular unit comprises a plurality of pixel upright columns; the multiple pixel columns are respectively in signal connection with multiple output ends of two signal gating devices through address signal lines, first input ends of the two signal gating devices are respectively connected with a first controller and used for receiving horizontal and vertical coordinate addresses of the pixel columns selected by the first controller, and second input ends of the two signal gating devices are respectively connected with the first controller through height signal lines and used for receiving preset height signals corresponding to the selected horizontal and vertical coordinate addresses; each pixel upright post is respectively connected with a driving device, the driving device is connected with a second controller, the second controller is connected with two address signal lines corresponding to the pixel upright posts through an AND gate, and the second controller is configured to control the driving device to drive the selected pixel upright posts to ascend and descend based on the preset height signal.
The dynamic physical sand table further comprises a frame body, wherein a first circuit board, a fixed plate and a second circuit board are sequentially arranged on the frame body from top to bottom, the pixel stand column is arranged above the first circuit board, and the second controller and the AND gate are arranged on the first circuit board; the driving device is arranged at the bottom of the fixed plate; the signal gate and the first controller are arranged on the second circuit board, a first input end and a second input end of the signal gate are connected with the first controller through the second circuit board, and an output end of the signal gate is connected with the address signal line on the first circuit board.
According to the dynamic physical sand table provided by the invention, the driving device is a motor, the motor is connected with a screw rod through a coupler, the screw rod penetrates through the first circuit board and is connected with a flange plate at the bottom of the pixel upright post in a threaded manner, the pixel upright post is of a hollow structure, a grid frame is arranged at the top of the frame body, and the pixel upright post is arranged in the grid frame and used for limiting and guiding.
According to the dynamic physical sand table provided by the invention, the coupler is positioned between the first circuit board and the fixed plate, the top of the coupler is provided with the protruding part, the bottom of the first circuit board is provided with the photoelectric switch matched with the protruding part and used for detecting the number of rotation turns, and the photoelectric switch is connected with the second controller.
According to the dynamic physical sand table provided by the invention, the preset height signal is the number of pulse signals corresponding to the number of rotation turns.
According to the dynamic physical sand table provided by the invention, a return-to-zero switch is respectively arranged below each pixel upright column, and the return-to-zero switch is arranged on the first circuit board and is connected with the second controller.
According to the dynamic physical sand table provided by the invention, each pixel modular unit comprises 8 × 8 pixel pillars.
The invention also provides a dynamic display control method of the dynamic physical sand table, which comprises the following steps:
s1, connecting the pixel modular units to each other to construct an N × M array;
s2, converting a preset display space into an N x M height matrix matched with the pixel modular unit, wherein each element in the height matrix is the preset height signal of the pixel upright post;
s3, traversing the height matrix by each pixel modularization unit, and reading a corresponding sub-matrix in the height matrix according to the position of each pixel modularization unit;
and S4, controlling the selected pixel upright post to lift up and down to reach a preset height according to the preset height signal corresponding to the element in the sub-matrix.
According to the dynamic display control method of the dynamic physical sand table provided by the invention, the step S3 specifically includes: and the starting pixel modularization unit receives the height matrix, reads the sub-matrix according to the position of the starting pixel modularization unit, and transmits the height matrix to the adjacent pixel modularization unit until each pixel modularization unit reads the corresponding sub-matrix.
According to the dynamic display control method of the dynamic physical sand table provided by the invention, the step S4 specifically includes: the first controller sends the horizontal and vertical coordinate addresses of the selected pixel upright columns to the two signal gating devices; the two signal gating devices receive preset height signals corresponding to the horizontal and vertical coordinate addresses selected by the first controller after responding, and send the preset height signals to the second controller corresponding to the horizontal and vertical coordinate addresses through the two address signal lines corresponding to the pixel stand columns and the AND gate; the second controller controls the driving device to drive the selected pixel upright post to lift up and down based on the preset height signal.
According to the dynamic physical sand table and the dynamic display control method thereof, horizontal and vertical coordinate addresses of pixel stand columns are scanned and selected through the first controller and the signal gating device, only two address signal lines of the selected pixel stand columns are communicated with the height signal line, then preset height signals corresponding to the selected horizontal and vertical coordinate addresses are sent to the second controller through the AND gate, and the second controller controls the driving device to drive the selected pixel stand columns to ascend and descend so as to reach the set height. Therefore, the plurality of pixel modular units can be assembled into a physical sand table with any size and high resolution, and any pixel upright column in each pixel modular unit of the physical sand table can be independently controlled to ascend and descend to change to a specified physical height, so that dynamic display of various space contents such as terrain, city and the like is realized, the manufacturing cost is low, and the method is suitable for wide application.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dynamic physical sand table provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a control block diagram of a pixel module provided by the present invention;
FIG. 4 is a block diagram of a driving structure of a pixel pillar according to the present invention;
FIG. 5 is a block diagram of the height matrix provided by the present invention;
FIG. 6 is a flow chart of a dynamic display control method for a dynamic physical sand table according to the present invention;
reference numerals:
1: a pixel pillar; 2: an address signal line; 3: an X signal gate; 4: a Y signal gate; 5: an output end; 6: a first input terminal; 7: a first controller; 8: a second input terminal; 9: a height signal line; 10: a drive device; 11: a second controller; 12: an AND gate; 13: a first circuit board; 14: a fixing plate; 15: a second circuit board; 16: a coupling; 17: a screw; 18: a flange plate; 19: a grid frame; 20: a projection; 21: a photoelectric switch; 22: a return-to-zero switch; 23: a first through hole; 24: a second through hole; 25: a first fastener; 26: a fixing hole; 27: a second fastener; 28: a pin barrel; 29: and (7) connecting pins.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 an embodiment 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.
The dynamic physical sand table of the present invention is described below in conjunction with fig. 1-5.
According to an embodiment of the invention, the dynamic physical sand table provided by the invention mainly comprises a plurality of pixel modular units, wherein the pixel modular units are connected with each other and distributed in an array. A plurality of pixel modularization units can be assembled and spliced into a physical sand table with any size and high resolution. Each pixel modular unit comprises a plurality of pixel columns 1 distributed in an array, each pixel modular unit is mainly provided with two signal gates and a first controller 7, and each pixel column 1 is mainly provided with a second controller 11 and a driving device 10. Specifically, the two signal gates are an X signal gate 3 and a Y signal gate 4 respectively, the X signal gate 3 is used for gating an abscissa address of the pixel column 1 on the first circuit board 13, the Y signal gate 4 is used for gating an ordinate address of the pixel column 1 on the first circuit board 13, and the first controllers 7 of the adjacent pixel modular units are connected through a communication interface.
The pixel columns 1 are respectively in signal connection with a plurality of output ends 5 of two signal gating devices through address signal lines 2, and first input ends 6 of the two signal gating devices are respectively connected with a first controller 7 and used for receiving horizontal and vertical coordinate addresses of the pixel columns 1 selected by the first controller 7; second input ends 8 of the two signal gates are respectively connected with the first controller 7 through height signal lines 9, and when the two signal gates receive the horizontal and vertical coordinate address of the selected pixel upright post 1 to respond, the two signal gates receive a preset height signal corresponding to the horizontal and vertical coordinate address selected by the first controller 7. It should be understood that the response of the signal gate of the present invention is: only two address signal lines 2 corresponding to each selected pixel column 1 are conducted to the height signal line 9.
Each pixel upright post 1 is connected with a driving device 10, each driving device 10 is connected with a second controller 11, each second controller 11 is connected with two address signal lines 2 (X signal lines and Y signal lines respectively) which are in corresponding signal connection with the pixel upright post 1 through an AND gate 12, and the second controller 11 is used for receiving a preset height signal corresponding to a selected horizontal and vertical coordinate address and controlling the driving device 10 to drive the selected pixel upright post 1 to ascend and descend based on the preset height signal.
It is understood that the preset height signal corresponding to the selected horizontal and vertical coordinate address can be synchronously transmitted to the second controller 11 by the and gate 12.
In the embodiment of the invention, the horizontal and vertical coordinate addresses of the pixel upright posts 1 are scanned and selected through the first controller 7 and the signal gating device, only two address signal lines 2 of the selected pixel upright posts 1 are communicated with the height signal line 9, so that the preset height signals corresponding to the selected horizontal and vertical coordinate addresses are sent to the second controller 11 through the address signal lines 2 and the AND gate 12, and the second controller 11 controls the driving device 10 to drive the selected pixel upright posts 1 to ascend and descend to reach the set height. Therefore, any pixel upright post 1 in each pixel modularization unit of the physical sand table can be independently controlled to ascend and descend to change to a specified physical height, dynamic display of various space contents such as terrain, city and the like is achieved, the manufacturing cost is low, the physical sand table can be repeatedly used, and the physical sand table is suitable for wide use.
In the present example, the first controller 7 and the second controller 11 of the present invention are microcontrollers.
According to the embodiment of the invention, the invention further comprises a frame body, and the frame body is provided with a first circuit board 13, a fixing plate 14 and a second circuit board 15 which are sequentially arranged in a layered manner from top to bottom. The pixel column 1 is supported above the first circuit board 13 through a screw 17, and the second controller 11 and the and gate 12 are arranged on the first circuit board 13; the driving device 10 is mounted at the bottom of the fixing plate 14 through a second fastening member 27, specifically, a fixing hole 26 is formed in the fixing plate 14, and the second fastening member 27 is connected with the driving device 10 through the fixing hole 26 to fix the driving device 10; the signal gate and the first controller 7 are arranged on the second circuit board 15, the first input end 6 and the second input end 8 of the signal gate are connected with the first controller 7 through the second circuit board 15, and the output end 5 of the signal gate is connected with the address signal line 2 on the first circuit board 13 through a flat cable. It should be understood that the first circuit board 13 and the second circuit board 15 of the present invention are mainly used for signal transmission control of each component, and the first circuit board 13 is provided with a plurality of circuit units, the circuit units are connected with the address signal lines 2, each circuit unit includes an and gate 12, the positions of the circuit units correspond to the address positions of the pixel columns 1, a plurality of output ends 5 of the signal gating device are connected with the circuit units of the first circuit board 13 through flat cables and the address signal lines 2, and the address positions of the pixel columns 1 can be correspondingly obtained through the positions of the circuit units, that is, the pixel columns 1 of the present invention are connected with the signal gating device through signals.
According to the embodiment of the invention, the driving device 10 is a motor, a motor rotating shaft extends to the upper part of the fixing plate 14 through the second through hole 24 on the fixing plate 14 to be connected with the coupler 16, the coupler 16 is connected with the screw 17, and the coaxial fixed connection of the motor rotating shaft and the screw 17 is realized through the first fastener 25 arranged on the side part of the coupler 16, so that the motor is fixed at the bottom of the fixing plate 14 and positioned above the second circuit board 15, and the interference on the second circuit board 15 is avoided; screw rod 17 extends to the top of first circuit board 13 and the ring flange 18 screw thread of pixel stand 1 bottom through first through-hole 23 on first circuit board 13 and links to each other, and pixel stand 1 is hollow structure, and screw rod 17 is when rotatory, and its upper portion main part can stretch into in the pixel stand 1 to the top of support body is equipped with square frame 19, and pixel stand 1 sets up in square frame 19, carries out spacing direction through square frame 19 to pixel stand 1, makes it become linear elevating movement by rotating. In this example, the checkerboard frame 19 is provided with two layers.
Further, the coupler 16 is arranged between the first circuit board 13 and the fixing plate 14 in a suspended manner, a protruding portion 20 extending upwards is arranged at the top edge of the coupler 16, a photoelectric switch 21 matched with the protruding portion 20 is arranged at the bottom of the first circuit board 13 and used for detecting the number of rotation turns, and the photoelectric switch 21 is connected with the second controller 11. Specifically, when the motor drives the coupler 16 to rotate, the protruding portion 20 sweeps the photoelectric switch 21, the number of rotation turns detected by the photoelectric switch 21 is sent to the second controller 11 as a position feedback signal, and the second controller 11 judges whether the pixel column 1 reaches a preset height according to the position feedback signal. It should be understood that the process of calculating the corresponding height by the number of rotation turns is conventional in the art and will not be described in detail herein.
In addition, the number of rotation turns is the number of pulse signals of the photoelectric switch 21, in this embodiment, the preset height signal is the number of pulse signals, that is, the second controller 11 determines whether the number of actual rotation turns reaches the preset number of pulse signals, and if not, the motor continues to be controlled to rotate to reach the preset number of pulse signals.
According to the embodiment of the invention, the return-to-zero switch 22 is respectively arranged below each pixel upright post 1, the return-to-zero switch 22 is arranged on the first circuit board 13 and is connected with the second controller 11, and the second controller 11 automatically controls the motor to rotate reversely when the power is switched on and initialized, so that the pixel upright posts 1 are lowered to touch the return-to-zero switch 22 for resetting and zero clearing, and errors of data are avoided.
In one embodiment of the present invention, each pixel modular unit includes 8 × 8 pixel pillars 1, and addresses (0,0) - (7, 7). It is to be understood that the intersection of every two horizontal and vertical address signal lines 2 in fig. 3 is represented as a pixel column 1, and the specific number of pixel columns 1 of the pixel modular unit is not particularly limited, and may be other numbers.
According to the embodiment of the invention, as shown in fig. 1, the frame body of the invention is a detachable structure. Specifically, the frame body is formed by assembling a pin cylinder 28 and a connecting pin 29, and four corners of the square frame 19, the first circuit board 13, the fixing plate 14 and the second circuit board 15 are respectively supported in a layered manner by the pin cylinder 28 and then connected by the connecting pin 29.
The dynamic display control method of the dynamic physical sand table provided by the invention is described below, and the dynamic display control method described below and the dynamic physical sand table described above can be referred to correspondingly.
As shown in fig. 6, the method for controlling dynamic display of a dynamic physical sand table provided by the present invention mainly includes the following steps.
And S1, connecting the pixel modular units with each other to construct an N M array.
And S2, converting the preset display space into an N x M height matrix matched with the pixel modular unit through an external application program, wherein each element in the height matrix is a preset height signal of the pixel upright post 1. The preset display space is a space to be displayed, and may be various spaces such as a terrain and a city.
And S3, traversing the height matrix by each pixel modularization unit, and reading the sub-matrix at the corresponding position in the height matrix according to the position of the sub-matrix. Specifically, the first controller 7 of the starting (first) pixel modularization unit receives the height matrix, the starting pixel modularization unit is generally a pixel modularization unit with an address of (1,1), and the starting pixel modularization unit reads the sub-matrix according to its own position and transmits the height matrix to the adjacent pixel modularization unit until each pixel modularization unit reads the corresponding sub-matrix. It should be understood that the pixel module unit of the present invention includes a plurality of pixel pillars 1, and thus, the pixel module unit corresponds to a sub-matrix unit in a height matrix.
And S4, controlling the lifting of the selected pixel upright post 1 to reach the preset height by each pixel modularization unit according to the preset height signal corresponding to the element in the sub-matrix. Specifically, the first controller 7 performs corresponding selection according to element positions in the sub-matrix, and sends the horizontal and vertical coordinate addresses of the selected pixel upright column 1 to the two signal gates; the two signal gates receive preset height signals corresponding to the selected horizontal and vertical coordinate addresses sent by the first controller 7 after responding, the selected preset height signals are sent to the second controller 11 corresponding to the horizontal and vertical coordinate addresses through the X signal line, the Y signal line and the AND gate 12, and the second controller 11 controls the driving device 10 to drive the selected pixel stand columns 1 to ascend and descend to reach the preset height based on the preset height signals.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A dynamic physical sand table, comprising:
the pixel modular units are distributed in an array mode and each pixel modular unit comprises a plurality of pixel upright columns;
the multiple pixel columns are respectively in signal connection with multiple output ends of two signal gating devices through address signal lines, first input ends of the two signal gating devices are respectively connected with a first controller and used for receiving horizontal and vertical coordinate addresses of the pixel columns selected by the first controller, and second input ends of the two signal gating devices are respectively connected with the first controller through height signal lines and used for receiving preset height signals corresponding to the selected horizontal and vertical coordinate addresses;
each pixel upright post is respectively connected with a driving device, the driving device is connected with a second controller, the second controller is connected with two address signal lines corresponding to the pixel upright posts through an AND gate, and the second controller is configured to control the driving device to drive the selected pixel upright posts to ascend and descend based on the preset height signal.
2. The dynamic physical sand table according to claim 1, further comprising a frame body, wherein a first circuit board, a fixed board and a second circuit board are arranged on the frame body from top to bottom, the pixel columns are arranged above the first circuit board, and the second controller and the and gate are arranged on the first circuit board; the driving device is arranged at the bottom of the fixed plate; the signal gate and the first controller are arranged on the second circuit board, a first input end and a second input end of the signal gate are connected with the first controller through the second circuit board, and an output end of the signal gate is connected with the address signal line on the first circuit board.
3. The dynamic physical sand table according to claim 2, wherein the driving device is a motor, the motor is connected to a screw rod through a coupling, the screw rod penetrates through the first circuit board and is connected to a flange at the bottom of the pixel stand column through a thread, the pixel stand column is of a hollow structure, a grid frame is arranged at the top of the frame body, and the pixel stand column is arranged in the grid frame and used for limiting and guiding.
4. The dynamic physical sand table according to claim 3, wherein the coupler is located between the first circuit board and the fixing plate, a protrusion is provided on the top of the coupler, a photoelectric switch fitted with the protrusion is provided on the bottom of the first circuit board for detecting the number of rotations, and the photoelectric switch is connected to the second controller.
5. The dynamic physical sand table according to claim 4, wherein the preset height signal is the number of pulse signals corresponding to the number of rotations.
6. The dynamic physical sand table according to claim 2, wherein a return-to-zero switch is disposed below each pixel pillar, and the return-to-zero switch is disposed on the first circuit board and connected to the second controller.
7. The dynamic physical sand table of claim 1, wherein each of the pixel modular units comprises 8 x 8 pixel posts.
8. A method for controlling the dynamic presentation of a dynamic physical sand table according to any of the claims 1-7, characterized in that it comprises the following steps:
s1, connecting the pixel modular units to each other to construct an N × M array;
s2, converting a preset display space into an N x M height matrix matched with the pixel modular unit, wherein each element in the height matrix is the preset height signal of the pixel upright post;
s3, traversing the height matrix by each pixel modularization unit, and reading a corresponding sub-matrix in the height matrix according to the position of each pixel modularization unit;
and S4, controlling the selected pixel upright post to lift up and down to reach a preset height according to the preset height signal corresponding to the element in the sub-matrix.
9. The dynamic display control method of the dynamic physical sand table according to claim 8, wherein the step S3 specifically comprises:
and the starting pixel modularization unit receives the height matrix, reads the sub-matrix according to the position of the starting pixel modularization unit, and transmits the height matrix to the adjacent pixel modularization unit until each pixel modularization unit reads the corresponding sub-matrix.
10. The dynamic display control method of the dynamic physical sand table according to claim 8, wherein the step S4 specifically comprises:
the first controller sends the horizontal and vertical coordinate addresses of the selected pixel upright columns to the two signal gating devices;
the two signal gating devices receive preset height signals corresponding to the horizontal and vertical coordinate addresses selected by the first controller after responding, and send the preset height signals to the second controller corresponding to the horizontal and vertical coordinate addresses through the two address signal lines corresponding to the pixel stand columns and the AND gate;
the second controller controls the driving device to drive the selected pixel upright post to lift up and down based on the preset height signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114822202A (en) * | 2022-04-14 | 2022-07-29 | 狮展(上海)展示服务有限公司 | Dot-matrix mechanical matrix sand table modularization equipment |
| CN116092389A (en) * | 2022-12-15 | 2023-05-09 | 湖北安心智能科技有限公司 | Expandable electronic sand table |
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| CN116092389A (en) * | 2022-12-15 | 2023-05-09 | 湖北安心智能科技有限公司 | Expandable electronic sand table |
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