CN110853418A - Teaching blackboard comprehensive display system and method based on virtual reality technology - Google Patents
Teaching blackboard comprehensive display system and method based on virtual reality technology Download PDFInfo
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- CN110853418A CN110853418A CN201911205466.4A CN201911205466A CN110853418A CN 110853418 A CN110853418 A CN 110853418A CN 201911205466 A CN201911205466 A CN 201911205466A CN 110853418 A CN110853418 A CN 110853418A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
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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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Abstract
The invention relates to a teaching blackboard comprehensive display system based on a virtual reality technology, which comprises a bearing base, a miniature projector, writing boards, an electronic whiteboard, a bearing column, an adjusting column, a main driving guide rail, an auxiliary driving guide rail, an arc driving guide rail and a control circuit, wherein the front end surface of the bearing base is connected with at least one writing board, the main driving guide rail is symmetrically distributed at the top and the bottom of the front end surface of the bearing base by the axis of the front end surface of the bearing base, the front end of the bearing column is connected with the miniature projector, the auxiliary driving guide rail is arranged on the side surface of the main driving guide rail, the electronic whiteboard is connected with the auxiliary driving guide rail in a sliding manner, and the two ends of. The display method comprises equipment assembly, data output display and information interaction. On one hand, the system has simple structure, good universality and low operation and maintenance cost; on the other hand, the convenience and the flexibility of information interaction operation between teachers and students, between students and between teachers, students and teaching equipment are improved.
Description
Technical Field
The invention relates to a teaching blackboard comprehensive display system and method based on a virtual reality technology, and belongs to the technical field of teaching equipment.
Background
At present, in the teaching activities such as biochemical engineering, industrial product design and processing, electronic commerce, international trade and the like, in order to improve teaching efficiency and improve teaching knowledge point teaching flexibility, convenience and vividness, an immersive teaching system based on a virtual reality technology is gradually applied and popularized while teaching work is carried out based on traditional blackboard, projector and other demonstrative teaching devices, for example, a virtual teaching method based on VR, a control terminal, a virtual teaching system and a virtual reality teaching wearable virtual reality device based on VR 201621432055.0 are provided with patent application number of 201711387158.9, although the current virtual teaching systems and devices of the types can meet the requirements of immersive teaching to a certain extent, the systems are all based on independent individual devices such as VR helmets, glasses and gloves, therefore, the information interaction among teachers and students and between students and among students in teaching activities is not smooth, the teaching means is single, the flexibility and convenience of teaching are seriously influenced, and meanwhile, the precision and quality of the teaching activities are easily influenced due to the fact that the information interaction is not timely, besides, the structure of the current teaching system is complex, the flexibility of system operation adjustment is poor, the operation maintenance cost is low, the purpose that teachers need to synchronously display information data in multiple different modes according to teaching outlines in the teaching activities cannot be met, and therefore popularization and application of the virtual teaching system and the technology are seriously influenced.
Therefore, in order to solve the problem, a completely new virtual teaching display system needs to be developed to meet the requirement of actual use.
Disclosure of Invention
The invention aims to overcome the defects and provides a teaching blackboard comprehensive display system and a display method based on a virtual reality technology.
In order to realize the purpose, the invention is realized by the following technical scheme:
a teaching blackboard comprehensive display system based on virtual reality technology comprises a bearing base, miniature projectors, writing boards, an electronic whiteboard, a projection screen, a winding mechanism, a positioning buckle, bearing columns, adjusting columns, a main driving guide rail, an auxiliary driving guide rail, a circular arc driving guide rail and a control circuit, wherein the bearing base is of a rectangular frame structure, the front end face of the bearing base is connected with at least one writing board and distributed in parallel, the number of the main driving guide rails is two, the main driving guide rails are symmetrically distributed at the top and the bottom of the front end face of the bearing base and distributed in parallel with the axis of the front end face of the bearing base, at least one bearing column is arranged, the two ends of the bearing column are respectively connected with the main driving guide rail in a sliding mode through sliders and distributed vertically, the distance between the rear end face of the bearing columns and the front end face of the writing board is not less than 5 mm, the front end face and, the upper end surface and the lower end surface of the electronic whiteboard are connected with the auxiliary driving guide rails in a sliding way and are positioned between the writing board and the bearing column, the number of the arc driving guide rails is two, the two ends of the arc driving guide rail exceed the left end surface and the right end surface of the bearing base by at least 10 mm, the front end surfaces of the two ends of the arc driving guide rail exceed the front end surface of the bearing column by at least 20 mm, the number of the adjusting columns is two, the two ends of the bearing base are respectively connected with an arc driving guide rail in a sliding way and are symmetrically distributed on the left side surface and the right side surface of the bearing base, the front end face of one of the adjusting columns is connected with the projection screen through a rolling mechanism, the front end face of the other adjusting column is provided with at least two positioning buckles, a control circuit is embedded in the bearing base, and are respectively and electrically connected with the micro projector, the electronic whiteboard, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail.
Further, bear base left surface and right flank symmetric distribution at least four directional loudspeaker and two directional microphone, just directional microphone is located and bears the base axis, each directional loudspeaker symmetric distribution is in directional microphone both sides, just directional loudspeaker intersects with directional microphone axis, and the nodical point is located bears the base dead ahead at least 50 centimetres department, and the projection of nodical point on bearing the base front end face is located and bears base front end face central point position, and directional loudspeaker, directional microphone all with control circuit electrical connection.
Further, bear base up end establish at least one surveillance camera head, gesture recognition camera, range unit and luminance sensor, surveillance camera head, gesture recognition camera and range unit pass through revolving stage mechanism and bear the base up end articulated, range unit is located between surveillance camera head, the gesture recognition camera position, luminance sensor is two at least, along bearing base axis equipartition bearing base axis up end.
Furthermore, the bearing column comprises a bearing groove, a light equalizing plate, illuminating beads and a driving slide rail, the bearing groove is of a U-shaped structure with a cross section, the upper end surface of the light-emitting diode is connected with the light-equalizing plate to form a closed cavity structure, the illuminating lamp beads are positioned in the bearing grooves and connected with the bottoms of the bearing grooves, the light axis of the illuminating lamp beads is vertically distributed with the light-equalizing plate, the driving slide rail is connected with the front end face of the light-equalizing plate, is positioned at the axial position of the light-equalizing plate and is distributed in parallel with the light-equalizing plate, the micro projector is connected with the driving slide rail in a sliding way through a turntable mechanism, and the optical axis of the micro projector and the front end face of the bearing base form an included angle of 30-90 degrees, and when the number of the micro projectors is two or more, the distance between two adjacent micro projectors is not less than 5 cm, and the illuminating lamp bead, the driving slide rail and the turntable mechanism are respectively and electrically connected with the control circuit.
Furthermore, the front end face of the bearing column is provided with at least two positioning buckles, the positioning buckles are uniformly distributed along the axis of the bearing column, the positioning buckle positioned on the front end face of the bearing column is connected with the front end face of the bearing column through a guide rod, the guide rod is of an at least two-stage telescopic rod structure, two ends of the guide rod are respectively hinged with the bearing column and the positioning buckle, and the axis of the guide rod and the axis of the bearing column form an included angle of 0-90 degrees.
Furthermore, the middle point of the arc driving guide rail is positioned on the axis of the bearing base, the arc length of the arc driving guide rail is 1.3-2.5 times of the length of the upper end surface and the lower end surface of the bearing base, and the 1/23-2/3 part of the effective length of the arc driving guide rail is connected with the bearing base.
Furthermore, at least one displacement sensor is arranged on each of the bearing column, the adjusting column, the micro projector and the electronic whiteboard, the displacement sensors are respectively connected with the front end faces of the main driving guide rail, the auxiliary driving guide rail, the arc driving guide rail and the bearing column in a sliding mode, and the displacement sensors are electrically connected with the control circuit.
Furthermore, the control system is based on any one of an industrial single chip microcomputer, a programmable controller and an internet-of-things controller, and the control system is additionally provided with at least one communication gateway.
A display method of a teaching blackboard comprehensive display system based on a virtual reality technology comprises the following steps:
s1, assembling equipment, namely, assembling a bearing base, a micro projector, a writing board, an electronic whiteboard, a projection screen, a winding mechanism, a positioning buckle, a bearing column, an adjusting column, a main driving guide rail, an auxiliary driving guide rail, a circular arc driving guide rail and a control circuit which form the invention, connecting the assembled invention with a classroom wall through the bearing base, and finally establishing data communication connection between the control circuit of the invention and an external power supply and a teaching communication network to finish the assembly of the invention;
s2, outputting and displaying data, after the step S1 is completed, detecting the current teaching environment in the classroom through a monitoring camera, a distance measuring device and a brightness sensor, adjusting and setting the display brightness of the micro projector and the electronic whiteboard by a control circuit according to the distance between the college and the electronic whiteboard and the lighting adjustment in the classroom; on the other hand, the working power of the directional loudspeaker and the directional microphone is adjusted and set, and the related data can be output and displayed after the adjustment and the setting are finished, so that the purpose of virtually displaying the teaching knowledge points and the specific scene is achieved, wherein the specific data output and display comprises the following ways:
1) the writing and displaying are realized, the micro projector, the electronic whiteboard and the projection screen are adjusted to be respectively positioned at the two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the writing board is completely or partially exposed, and then, a teacher writes and displays corresponding information to meet the requirement of teaching operation;
2) writing and electronic synchronous display, namely adjusting the micro projector, the electronic whiteboard and the projection screen to be respectively positioned at two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the electronic whiteboard is positioned at a position which meets the watching requirements of students on one hand, and the exposed part of the writing board is positioned behind the electronic whiteboard on the other hand, then, a teacher writes and displays corresponding information through the writing board, synchronously outputs corresponding picture information and video information through the electronic whiteboard, and synchronously outputs audio through a directional microphone during information data;
3) the projection display comprises a main drive guide rail, an auxiliary drive guide rail and an arc drive guide rail, wherein the main drive guide rail, the auxiliary drive guide rail and the arc drive guide rail are used for adjusting a micro projector, an electronic white board and a projection curtain are respectively positioned at the position right ahead of a bearing bottom, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is coated on the electronic white board and the right ahead of the micro projector, then the micro projector is driven to operate, video information of the micro projector is projected to the rear end face of the projection curtain, a student reads projection information of the head projector in front of the projection curtain, and corresponding audio and telecommunications information is output through a directional loudspeaker when the micro projector operates;
4) the projector electronic synchronous display method comprises the steps that a micro projector, an electronic white board and a projection curtain are adjusted to be located at the position right in front of a bearing bottom through a main driving guide rail, an auxiliary driving guide rail and an arc driving guide rail, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is wrapped right in front of the micro projector, the electronic white board is located on the outer side of the projection curtain, then the micro projector is driven to operate to project video information of the micro projector to the rear end face of the projection curtain, and a student reads projection information of a head shadow in front of the projection curtain; on the other hand, the synchronous display and output of the related information are realized by driving the electronic whiteboard to operate, and meanwhile, when the micro projector and the electronic whiteboard operate, the corresponding voice and information is output through the directional loudspeaker;
s3, information interaction, wherein when data output and display are carried out in the step S2, on one hand, voice information of teachers and students is collected through directional microphones and fed back to a control circuit, and after the control circuit identifies the voice model, the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection curtain, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the voice information; on the other hand, gestures of teachers and students are recognized through the gesture recognition camera, and the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection screen, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the collected gesture signals, so that the purpose of virtual teaching and virtual interactive simulation is achieved while the teaching information output state is adjusted.
Furthermore, in the step S2, when the projection screen is laid, the angle between the projection screen and the front end surface of the supporting base and the surface structure of the projection screen can be adjusted by the positioning buckle on the supporting column and the guide rod connected to the positioning buckle, and when the micro projector performs projection imaging, the brightness compensation is performed by the illuminating lamp beads in the supporting column according to the lighting condition detected in the step S1.
On one hand, the system has simple structure, good universality, low operation and maintenance cost and convenient operation, and can effectively meet the requirement of flexibly displaying and outputting different data in the teaching activity so as to achieve the aim of flexibly and efficiently developing the teaching work; on the other hand, the method and the means of displaying related teaching information in the teaching activities are greatly expanded, the flexibility and the convenience of the teaching activities are improved, and meanwhile, the convenience and the flexibility of information interaction operation between a teacher and a student, between the student and between the teacher, the student and teaching equipment are improved, so that the flexibility, the convenience and the accuracy of the teaching activities are greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of a partial structure of the present invention;
FIG. 3 is a cross-sectional partial structural view of a load-bearing column;
FIG. 4 is a flow chart of a display method according to the present invention.
Detailed Description
As shown in fig. 1-3, a teaching blackboard integrated display system based on virtual reality technology comprises a bearing base 1, a micro projector 2, a writing board 3, an electronic whiteboard 4, a projection screen 5, a winding mechanism 6, a positioning buckle 7, a bearing column 8, an adjusting column 9, a main driving guide rail 10, an auxiliary driving guide rail 11, an arc driving guide rail 12 and a control circuit 13, wherein the bearing base 1 is a rectangular frame structure, the front end surface of the bearing base 1 is connected with at least one writing board 3 and distributed in parallel, the main driving guide rails 10 are two in number, the bearing base 1 is symmetrically distributed on the top and the bottom of the front end surface of the bearing base 1 and distributed in parallel with the axis of the front end surface of the bearing base 1, at least one bearing column 8 is provided, the two ends of the bearing column are respectively connected with the main driving guide rail 10 in a sliding manner through a sliding block 14 and distributed vertically, the distance between the rear end surface of the bearing column, the front end face is connected with at least one micro projector 2, the side surface of a main driving guide rail 10 is provided with an auxiliary driving guide rail 11, the upper end face and the lower end face of an electronic white board 4 are connected with the auxiliary driving guide rail 11 in a sliding way and are positioned between a writing board 3 and a bearing column 8, two arc driving guide rails 12 are arranged, the upper end face and the lower end face of the bearing base 1 are symmetrically distributed on the central line of the bearing base 1, the two ends of each arc driving guide rail 12 exceed the left end face and the right end face of the bearing base 1 by at least 10 mm, the front end faces of the two ends of each arc driving guide rail 12 exceed the front end face of the bearing column 8 by at least 20 mm, two adjusting columns 9 are arranged, the two ends of each arc driving guide rail 12 are respectively connected in a sliding way and are symmetrically distributed on the left side face and the right side face of the bearing base 1, the front end face of, the control circuit 13 is embedded in the bearing base 1 and is electrically connected with the micro projector 2, the electronic whiteboard 4, the winding mechanism 6, the main driving guide rail 10, the auxiliary driving guide rail 11 and the arc driving guide rail 12 respectively.
Wherein, the left side and the right side of the bearing base 1 are symmetrically distributed with at least four directional loudspeakers 15 and two directional microphones 16, the directional microphones 16 are positioned on the axis of the bearing base 1, the directional loudspeakers 15 are symmetrically distributed on two sides of the directional microphones 16, the axes of the directional loudspeakers 15 and the directional microphones 16 are crossed, the crossing point is positioned at least 50 cm right ahead of the bearing base 1, the projection of the crossing point on the front end surface of the bearing base 1 is positioned at the central point of the front end surface of the bearing base 1, the directional loudspeakers 15 and the directional microphones 16 are electrically connected with the control circuit 13, in addition, the upper end surface of the bearing base 1 is provided with at least one monitoring camera 17, a gesture recognition camera 18, a distance measuring device 19 and a brightness sensor 20, the monitoring camera 17, the gesture recognition camera 18 and the distance measuring device 19 are hinged with the upper end surface of the bearing base 1 through a gesture recognition camera mechanism 21, the distance measuring device 19 is positioned between the monitoring camera 17 and the gesture recognition camera 18, and at least two brightness sensors 20 are uniformly distributed on the upper end surface of the axis of the bearing base 1 along the axis of the bearing base 1.
Meanwhile, the bearing column 8 comprises a bearing groove 81, a light-equalizing plate 82, illuminating lamp beads 83 and driving slide rails 84, the bearing groove 81 is of a U-shaped structure in cross section, the upper end face of the bearing groove 81 is connected with the light-equalizing plate 82 to form a closed cavity structure, the illuminating lamp beads 83 are positioned in the bearing groove 81 and connected with the bottom of the bearing groove 81, the optical axes of the illuminating lamp beads 83 are vertically distributed with the light-equalizing plate 82, the driving slide rails 84 are connected with the front end face of the light-equalizing plate 82 and positioned at the axial position of the light-equalizing plate 82 and distributed in parallel with the light-equalizing plate 82, the micro projector 2 is slidably connected with the driving slide rails 84 through a rotary table mechanism 22, the optical axes of the micro projector 2 and the front end face of the bearing base 1 form an included angle of 30-90 degrees, when two or more micro projectors 2 are provided, the distance between two adjacent micro projectors 2 is not less than 5 cm, and the illuminating lamp, The drive slide rail 84 and the turntable mechanism 21 are electrically connected to the control circuit 13, respectively.
Further preferably, the bearing column 8 before the terminal surface establish two at least location and detain 7, each location detain 7 along 8 axis equipartitions of bearing column, and the location that is located the bearing column 8 before the terminal surface detains 7 and is connected with the bearing column 8 before the terminal surface through guide bar 22, guide bar 22 is two-stage telescopic link structure at least, and its both ends are articulated with bearing column 8 and location knot 7 respectively, just guide bar 22 axis and bearing column 8 axis are 0-90 contained angle.
Meanwhile, the middle point of the arc driving guide rail 12 is positioned on the axis of the bearing base 1, the arc 12 of the arc driving guide rail is 1.3-2.5 times as long as the length of the upper end surface and the lower end surface of the bearing base 1, and the 1/23-2/3 part of the effective length of the arc driving guide rail 12 is connected with the bearing base 1.
Further preferably, the bearing column 8, the adjusting column 9, the micro projector 2 and the electronic whiteboard 4 are all provided with at least one displacement sensor 23, the displacement sensors 23 are respectively connected with the main driving guide rail 10, the auxiliary driving guide rail 11, the arc driving guide rail 12 and the front end face of the bearing column 8 in a sliding manner, and the displacement sensors 23 are all electrically connected with the control circuit 13.
In this embodiment, the control system 13 is based on any one of an industrial single chip, a programmable controller and an internet-of-things controller, and the control system is further provided with at least one communication gateway.
In this embodiment, the arc driving guide rail 12 has any one of a perfect circle, an ellipse, a hyperbola and a parabola structure.
In the present embodiment, the driving modes of the main driving rail 10, the auxiliary driving rail 11, the circular arc driving rail 12, the control circuit 13, and the driving slide rail 84 are any one of a linear motor, a pulley, a chain, a rack and pinion mechanism, and a screw mechanism.
As shown in fig. 4, a display method of a teaching blackboard integrated display system based on a virtual reality technology includes the following steps:
s1, assembling equipment, namely, assembling a bearing base, a micro projector, a writing board, an electronic whiteboard, a projection screen, a winding mechanism, a positioning buckle, a bearing column, an adjusting column, a main driving guide rail, an auxiliary driving guide rail, a circular arc driving guide rail and a control circuit which form the invention, connecting the assembled invention with a classroom wall through the bearing base, and finally establishing data communication connection between the control circuit of the invention and an external power supply and a teaching communication network to finish the assembly of the invention;
s2, outputting and displaying data, after the step S1 is completed, detecting the current teaching environment in the classroom through a monitoring camera, a distance measuring device and a brightness sensor, adjusting and setting the display brightness of the micro projector and the electronic whiteboard by a control circuit according to the distance between the college and the electronic whiteboard and the lighting adjustment in the classroom; on the other hand, the working power of the directional loudspeaker and the directional microphone is adjusted and set, and the related data can be output and displayed after the adjustment and the setting are finished, so that the purpose of virtually displaying the teaching knowledge points and the specific scene is achieved, wherein the specific data output and display comprises the following ways:
1) the writing and displaying are realized, the micro projector, the electronic whiteboard and the projection screen are adjusted to be respectively positioned at the two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the writing board is completely or partially exposed, and then, a teacher writes and displays corresponding information to meet the requirement of teaching operation;
2) writing and electronic synchronous display, namely adjusting the micro projector, the electronic whiteboard and the projection screen to be respectively positioned at two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the electronic whiteboard is positioned at a position which meets the watching requirements of students on one hand, and the exposed part of the writing board is positioned behind the electronic whiteboard on the other hand, then, a teacher writes and displays corresponding information through the writing board, synchronously outputs corresponding picture information and video information through the electronic whiteboard, and synchronously outputs audio through a directional microphone during information data;
3) the projection display comprises a main drive guide rail, an auxiliary drive guide rail and an arc drive guide rail, wherein the main drive guide rail, the auxiliary drive guide rail and the arc drive guide rail are used for adjusting a micro projector, an electronic white board and a projection curtain are respectively positioned at the position right ahead of a bearing bottom, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is coated on the electronic white board and the right ahead of the micro projector, then the micro projector is driven to operate, video information of the micro projector is projected to the rear end face of the projection curtain, a student reads projection information of the head projector in front of the projection curtain, and corresponding audio and telecommunications information is output through a directional loudspeaker when the micro projector operates;
4) the projector electronic synchronous display method comprises the steps that a micro projector, an electronic white board and a projection curtain are adjusted to be located at the position right in front of a bearing bottom through a main driving guide rail, an auxiliary driving guide rail and an arc driving guide rail, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is wrapped right in front of the micro projector, the electronic white board is located on the outer side of the projection curtain, then the micro projector is driven to operate to project video information of the micro projector to the rear end face of the projection curtain, and a student reads projection information of a head shadow in front of the projection curtain; on the other hand, the synchronous display and output of the related information are realized by driving the electronic whiteboard to operate, and meanwhile, when the micro projector and the electronic whiteboard operate, the corresponding voice and information is output through the directional loudspeaker;
s3, information interaction, wherein when data output and display are carried out in the step S2, on one hand, voice information of teachers and students is collected through directional microphones and fed back to a control circuit, and after the control circuit identifies the voice model, the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection curtain, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the voice information; on the other hand, gestures of teachers and students are recognized through the gesture recognition camera, and the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection screen, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the collected gesture signals, so that the purpose of virtual teaching and virtual interactive simulation is achieved while the teaching information output state is adjusted.
In the step S2, when the projection screen is laid, the angle between the projection screen and the front end surface of the supporting base and the surface structure of the projection screen can be adjusted by the positioning buckle on the supporting column and the guide rod connected to the positioning buckle, and when the micro projector performs projection imaging, the brightness compensation is performed by the illuminating lamp beads in the supporting column according to the lighting condition detected in the step S1.
In addition, in the specific operation of the invention, when the number of the micro projectors on the bearing column is two or more, the micro projectors operate independently and respectively perform projection display in different areas of the projection screen, and when the number of the bearing columns for mounting the micro information projectors is two or more, the projection areas of the micro projectors on the projection screen are distributed in any one structure of a rectangular array or an annular array.
On one hand, the system has simple structure, good universality, low operation and maintenance cost and convenient operation, and can effectively meet the requirement of flexibly displaying and outputting different data in the teaching activity so as to achieve the aim of flexibly and efficiently developing the teaching work; on the other hand, the method and the means of displaying related teaching information in the teaching activities are greatly expanded, the flexibility and the convenience of the teaching activities are improved, and meanwhile, the convenience and the flexibility of information interaction operation between a teacher and a student, between the student and between the teacher, the student and teaching equipment are improved, so that the flexibility, the convenience and the accuracy of the teaching activities are greatly improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a teaching blackboard integrated display system based on virtual reality technique which characterized in that: the teaching blackboard comprehensive display system based on the virtual reality technology comprises a bearing base, a micro projector, a writing board, an electronic whiteboard, a projection screen, a winding mechanism, a positioning buckle, a bearing column, an adjusting column, a main driving guide rail, an auxiliary driving guide rail, an arc driving guide rail and a control circuit, wherein the bearing base is of a rectangular frame structure, the front end face of the bearing base is connected with at least one writing board and distributed in parallel, the number of the main driving guide rails is two, the bearing column is symmetrically distributed at the top and the bottom of the front end face of the bearing base and distributed in parallel with the axis of the front end face of the bearing base, at least one bearing column is arranged, the two ends of the bearing column are respectively connected with the main driving guide rail in a sliding mode through a sliding block and are vertically distributed, the interval between the rear end face of the bearing column and the front end face of the writing board is not less than 5 mm, the front end face, the upper end face and the lower end face of the electronic whiteboard are connected with the auxiliary driving guide rail in a sliding mode and are located between the writing board and the bearing column, the two circular arc driving guide rails are symmetrically distributed on the upper end face and the lower end face of the bearing base in a central line mode, the two ends of each circular arc driving guide rail exceed the left end face and the right end face of the bearing base by at least 10 mm, the front end faces of the two ends of each circular arc driving guide rail exceed the front end face of the bearing column by at least 20 mm, the two adjusting columns are arranged, the two ends of each adjusting column are respectively connected with the circular arc driving guide rails in a sliding mode and symmetrically distributed on the left side face and the right side face of the bearing base, the front end face of one adjusting column is connected with the projection screen through a winding mechanism, the front end face of the other adjusting column is provided with at least two positioning buckles, and the control circuit is, The arc driving guide rails are electrically connected.
2. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: bear base left surface and right flank symmetric distribution four at least directional loudspeaker and two directional microphone, just directional microphone is located and bears the base axis, each directional loudspeaker symmetric distribution in directional microphone both sides, just directional loudspeaker intersects with directional microphone axis, and the nodical position is located and bears the at least 50 centimetres of position in the dead ahead of base, and the projection of nodical on bearing base preceding terminal surface is located and bears base preceding terminal surface central point position, and directional loudspeaker, directional microphone all with control circuit electrical connection.
3. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: bear base up end establish at least one surveillance camera head, gesture recognition camera, range unit and luminance sensor, surveillance camera head, gesture recognition camera and range unit pass through revolving stage mechanism and bear the base up end articulated, range unit is located between surveillance camera head, the gesture recognition camera position, luminance sensor is two at least, along bearing base axis equipartition bearing base axis up end.
4. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: bear the post including bearing groove, equal bare board, illuminating lamp pearl, drive slide rail, bear the groove and personally submit "U" font for the cross section and handle the column structure, its up end is connected with equal bare board and constitutes airtight cavity structures, illuminating lamp pearl is located and bears the inslot and is connected with the bearing groove bottom, and illuminating lamp pearl optical axis and equal bare board vertical distribution, the drive slide rail is connected with equal bare board front end face, is located equal bare board axial position and distributes with equal bare board parallel, miniature projector passes through revolving stage mechanism and drive slide rail sliding connection, and miniature projector optical axis and bear base front end face and be 30-90 contained angles, and when miniature projector is two and more than two, interval is not less than 5 centimetres between two adjacent miniature projectors, illuminating lamp pearl, drive slide rail and revolving stage mechanism respectively with control circuit electrical connection.
5. The teaching blackboard integrated display system based on virtual reality technology according to claim 1 or 4, characterized in that: the bearing post preceding terminal surface establish two at least location and detain, each location is detained along bearing post axis equipartition, and the location that is located bearing post preceding terminal surface is detained and is connected with bearing post preceding terminal surface through the guide bar, the guide bar is at least two-stage telescopic link structure, and its both ends are articulated with bearing post and location respectively, just the guide bar axis is 0-90 contained angle with bearing post axis.
6. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: the middle point of the arc driving guide rail is positioned on the axis of the bearing base, the arc length of the arc driving guide rail is 1.3-2.5 times of the length of the upper end surface and the lower end surface of the bearing base, and the 1/23-2/3 part of the effective length of the arc driving guide rail is connected with the bearing base.
7. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: at least one displacement sensor is arranged on each of the bearing column, the adjusting column, the micro projector and the electronic whiteboard, the displacement sensors are respectively connected with the main driving guide rail, the auxiliary driving guide rail, the arc driving guide rail and the bearing column in a sliding mode, and the displacement sensors are electrically connected with the control circuit.
8. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: the control system is based on any one of an industrial single chip microcomputer, a programmable controller and an internet-of-things controller, and is additionally provided with at least one communication gateway.
9. A display method of a teaching blackboard comprehensive display system based on a virtual reality technology is characterized in that: the display method of the teaching blackboard comprehensive display system based on the virtual reality technology comprises the following steps:
s1, assembling equipment, namely, assembling a bearing base, a micro projector, a writing board, an electronic whiteboard, a projection screen, a winding mechanism, a positioning buckle, a bearing column, an adjusting column, a main driving guide rail, an auxiliary driving guide rail, a circular arc driving guide rail and a control circuit which form the invention, connecting the assembled invention with a classroom wall through the bearing base, and finally establishing data communication connection between the control circuit of the invention and an external power supply and a teaching communication network to finish the assembly of the invention;
s2, outputting and displaying data, after the step S1 is completed, detecting the current teaching environment in the classroom through a monitoring camera, a distance measuring device and a brightness sensor, adjusting and setting the display brightness of the micro projector and the electronic whiteboard by a control circuit according to the distance between the college and the electronic whiteboard and the lighting adjustment in the classroom; on the other hand, the working power of the directional loudspeaker and the directional microphone is adjusted and set, and the related data can be output and displayed after the adjustment and the setting are finished, so that the purpose of virtually displaying the teaching knowledge points and the specific scene is achieved, wherein the specific data output and display comprises the following ways:
1) the writing and displaying are realized, the micro projector, the electronic whiteboard and the projection screen are adjusted to be respectively positioned at the two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the writing board is completely or partially exposed, and then, a teacher writes and displays corresponding information to meet the requirement of teaching operation;
2) writing and electronic synchronous display, namely adjusting the micro projector, the electronic whiteboard and the projection screen to be respectively positioned at two sides of the bearing base through the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail, so that the electronic whiteboard is positioned at a position which meets the watching requirements of students on one hand, and the exposed part of the writing board is positioned behind the electronic whiteboard on the other hand, then, a teacher writes and displays corresponding information through the writing board, synchronously outputs corresponding picture information and video information through the electronic whiteboard, and synchronously outputs audio through a directional microphone during information data;
3) the projection display comprises a main drive guide rail, an auxiliary drive guide rail and an arc drive guide rail, wherein the main drive guide rail, the auxiliary drive guide rail and the arc drive guide rail are used for adjusting a micro projector, an electronic white board and a projection curtain are respectively positioned at the position right ahead of a bearing bottom, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is coated on the electronic white board and the right ahead of the micro projector, then the micro projector is driven to operate, video information of the micro projector is projected to the rear end face of the projection curtain, a student reads projection information of the head projector in front of the projection curtain, and corresponding audio and telecommunications information is output through a directional loudspeaker when the micro projector operates;
4) the projector electronic synchronous display method comprises the steps that a micro projector, an electronic white board and a projection curtain are adjusted to be located at the position right in front of a bearing bottom through a main driving guide rail, an auxiliary driving guide rail and an arc driving guide rail, the projection curtain is unfolded through a winding mechanism, the other end of the projection curtain is connected with another adjusting column through a positioning buckle, the projection curtain is laid, the projection curtain is wrapped right in front of the micro projector, the electronic white board is located on the outer side of the projection curtain, then the micro projector is driven to operate to project video information of the micro projector to the rear end face of the projection curtain, and a student reads projection information of a head shadow in front of the projection curtain; on the other hand, the synchronous display and output of the related information are realized by driving the electronic whiteboard to operate, and meanwhile, when the micro projector and the electronic whiteboard operate, the corresponding voice and information is output through the directional loudspeaker;
s3, information interaction, wherein when data output and display are carried out in the step S2, on one hand, voice information of teachers and students is collected through directional microphones and fed back to a control circuit, and after the control circuit identifies the voice model, the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection curtain, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the voice information; on the other hand, gestures of teachers and students are recognized through the gesture recognition camera, and the control circuit drives and adjusts the running states of the micro projector, the writing board, the electronic white board, the projection screen, the winding mechanism, the main driving guide rail, the auxiliary driving guide rail and the arc driving guide rail according to the collected gesture signals, so that the purpose of virtual teaching and virtual interactive simulation is achieved while the teaching information output state is adjusted.
10. The teaching blackboard integrated display system based on virtual reality technology according to claim 1, characterized in that: in the step S2, when the projection screen is laid, the angle between the projection screen and the front end face of the supporting base and the surface structure of the projection screen can be adjusted by the positioning buckle on the supporting column and the guide rod connected to the positioning buckle, and when the micro projector performs projection imaging, the brightness compensation is performed by the illuminating lamp beads in the supporting column according to the lighting condition detected in the step S1.
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