Interactive projection equipment and projection method for dance teaching

Abstract

The invention relates to an interactive projection device and method for dance teaching in the technical field of dance teaching, and the device comprises a supporting table, a control host, a projection plate, a projection module, a motion capture module, and a projection cloth assembly. The control host is electrically connected with the projection module and the motion capture module through control signal lines, the motion capture module comprises a second position adjusting assembly and a motion capture camera, and the motion capture camera is used for automatically capturing motion information of a dancer and transmitting the motion information to the control host for analysis. The motion capture module, the projection module and the projection cloth assembly are all assembled on the whole interactive projection equipment to form an integrated interactive projection structure, the effect of flexible use is achieved, the use cost and the maintenance cost are reduced, the performance of unfolding the projector, the motion capture camera and the projection cloth body at the same time is achieved, and the application range is wide. And the whole equipment has the effects of being convenient to unfold and contract.

Description

Technical Field

[0001] The invention relates to the technical field of dance teaching, and specifically discloses an interactive projection device and a projection method for dance teaching. Background Art

[0002] Interactive projection technology uses a capture device (sensor) to capture and shoot the target image (such as the participant), which is then analyzed by the image analysis system to generate the movement of the captured object. The movement data is combined with the real-time image interaction system to produce a close interaction effect between the participant and the screen. The interactive projection system is an interactive system that integrates the world's most advanced advertising and entertainment technology. It is suitable for all public indoor places, especially leisure, shopping, entertainment and education places.

[0003] At present, in the process of dance teaching, interactive projection equipment is widely used. It presents the dancer's dance posture on the big screen through the cooperation of motion capture equipment and projection equipment, so that learners can feel the dance posture more clearly and intuitively, thereby enriching the learner's visual experience and achieving better teaching effect. However, the motion capture equipment, projection equipment and big screen in the existing interactive projection equipment for dance teaching are independent, and the three are electrically connected by system signals. When they are used, the motion capture equipment, projection equipment and big screen will be installed in corresponding positions of the classroom respectively, and cannot form an integrated structure. When dance teaching is required in other classrooms, it is necessary to install another set of interactive projection equipment in this classroom, and the use cost and maintenance cost are both high. Therefore, an interactive projection equipment and projection method for dance teaching are proposed to improve the above problems. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes an interactive projection device and a projection method for dance teaching to overcome the above technical problems existing in the existing related art.

[0005] The technical solution of the present invention is achieved in this way: The present invention provides an interactive projection device for dance teaching, comprising a support platform, a control host, a projection board, a projection module, a motion capture module and a projection cloth assembly, wherein the control host is mounted on the support platform, and the control host is electrically connected to the projection module and the motion capture module through a control signal line, the motion capture module comprises a second position adjustment component and a motion capture camera, and the motion capture camera is used to automatically capture the motion information of the dancer, and transmit the motion information to the control host for analysis, the projection module comprises a first position adjustment component and a projector, and the projector is used to receive the motion information analyzed by the control host, and project the analyzed motion information onto the projection cloth assembly; A bottom frame is fixedly mounted on the top of the support platform, and a first position adjustment component is mounted in the bottom frame, and the projector is mounted on one end of the first position adjustment component; The projection board is fixedly mounted on one side of the top of the bottom frame, and a top frame is fixedly mounted on the top of the projection board, the second position adjustment component is mounted in the top frame, and a motion capture camera is mounted on one end of the second position adjustment component; The projection cloth assembly is mounted on the top frame; A U-shaped rear cover is fixedly installed between one side of the projection board, the top of the bottom frame and the bottom of the top frame, and a driving mechanism for driving the projection cloth assembly, the first position adjustment assembly and the second position adjustment assembly to unfold is installed on the U-shaped rear cover.

[0006] Furthermore, the first position adjustment component includes a first threaded rod rotatably connected to the bottom of the inner wall of the U-shaped rear cover, and the first threaded rod is screwed with a first movable seat inserted into the bottom frame, a top side of the bottom frame is provided with a first guide groove for the first movable seat to pass through, a first mounting frame is fixed to the bottom of the first movable seat, and the inner wall of the first mounting frame is rotatably connected to a first steering rod, a first missing gear is coaxially fixed to one end of the bottom of the first steering rod, a first rack seat is fixedly installed on the bottom inner wall of the bottom frame near the middle position, and the position of the first rack seat corresponds to the position of the first missing gear, a first device frame is fixedly installed on one end of the first steering rod, and the projector is fixedly installed in the first device frame, the projector is designed to be inclined, a first insertion groove for the first device frame to be inserted into is provided at one end of the bottom frame, and a connecting groove for the first steering rod to turn is provided on one side of the bottom frame, and the connecting groove is connected to the inner wall of the bottom frame and the inner wall of the first insertion groove.

[0007] Furthermore, the second position adjustment component includes a second threaded rod rotatably connected to the top of the inner wall of the U-shaped rear cover, and the second threaded rod is screwed with a second movable seat inserted into the top frame, and a second guide groove for the second movable seat to pass through is opened on one side of the bottom of the top frame, a second mounting frame is fixed on the top of the second movable seat, and both ends of the inner wall of the second mounting frame are rotatably connected to the first transmission wheel, and a first transmission belt is transmission-connected between the two first transmission wheels, a second missing gear is coaxially fixed on one of the first transmission wheels, and a second rack seat is fixedly installed on the inner wall of the top frame near one end, and the position of the second rack seat corresponds to the position of the second missing gear, a second steering rod is coaxially fixed on the other first transmission wheel, a second device frame is fixedly installed on one end of the second steering rod, and an angle adjustment component for adjusting the angle of the motion capture camera is arranged in the second device frame, and a second insertion groove for the second device frame to be inserted into is opened at one end of the top frame.

[0008] Furthermore, the angle adjustment component includes an electric push rod hinged at one end of the top inner wall of the second equipment frame, and the motion capture camera is hinged at one side inner wall of the second equipment frame, a slide rail is installed on the top of the motion capture camera, and a slide rod is installed at the piston end of the electric push rod, and the slide rod is slidably set on the inner wall of the slide rail.

[0009] Furthermore, a downlight is fixedly mounted on one end of the second steering rod close to the bottom of the first transmission belt, and the downlight is electrically connected to the control host.

[0010] Furthermore, the projection cloth assembly includes a cloth storage cavity opened in the top frame, and the inner wall of the cloth storage cavity is rotatably connected to a winding roller, and the winding roller is sleeved with the projection cloth body. An inlet and outlet for one end of the projection cloth body to extend out is opened on one side of the bottom of the cloth storage cavity, and a counterweight bar is fixedly installed at one end of the projection cloth body.

[0011] Furthermore, baffles are installed at both ends of the outer wall on the other side of the projection board, the top of the bottom frame and the bottom of the top frame, and anti-slip grooves are opened at the corners of one side of the baffles, both sides of the projection cloth body and both sides of the counterweight bar are located inside the anti-slip grooves, and a slot for the counterweight bar to be inserted is also opened on the top of the bottom frame.

[0012] Furthermore, the driving mechanism includes a forward and reverse motor fixedly mounted on the inner wall of the U-shaped rear cover, and a second transmission wheel is fixedly mounted on one side of the outer wall of the output shaft of the forward and reverse motor and one end of the outer wall of the winding roller, a second transmission belt is transmission-connected between the two second transmission wheels, and a through opening is opened on the top frame for the second transmission belt to pass through, a speed change gear box is fixedly mounted on the top of the outer wall of one end of the U-shaped rear cover, and one end of the second threaded rod and the output shaft of the forward and reverse motor both extend to the interior of the speed change gear box, a large gear is mounted on the other side of the outer wall of the output shaft of the forward and reverse motor, a small gear is mounted on one end of the second threaded rod, and the small gear is meshed with the large gear, a third transmission wheel is fixedly mounted on one side of the outer wall of the first threaded rod and one side of the outer wall of the second threaded rod, and a third transmission belt is transmission-connected between the two third transmission wheels.

[0013] Furthermore, an audio device is fixedly installed in the middle position of one side of the support platform, and the audio device is electrically connected to the control host. A bottom groove is opened at the bottom of the support platform, and a hydraulic scissor bracket is fixedly installed on the inner wall of the bottom groove, and universal wheels are fixedly installed at the four corners of the bottom of the hydraulic scissor bracket.

[0014] An interactive projection method for dance teaching, applied to an interactive projection device for dance teaching, comprises the following steps: Step 1: The host controls the driving mechanism to work, and the first position adjustment component, the second position adjustment component and the projection cloth component are synchronously unfolded, so that the motion capture camera is gradually moved to one end of the entire interactive projection device, and the second missing gear and the second rack seat are meshed to drive the motion capture camera to rotate ninety degrees; the projector is also synchronously moved to one end of the entire interactive projection device, and the projector is driven to rotate ninety degrees under the meshing action of the first missing gear and the first rack seat, so that the projector is rotated to the front of the entire interactive projection device; the winding roller and the projection cloth body are also synchronously driven to unwind, so that the projection cloth body is laid on the projection board; Step 2: Turn on the downlight by controlling the host, so that the light shines on the classroom floor, forming a light irradiation area, and the dancer dances and teaches in the light irradiation area; Step 3: According to the height of the dancer, use the hydraulic scissor bracket to adjust the height of the entire interactive projection device, and use the angle adjustment component to adjust the tilt angle of the motion capture camera; Step 4: Use the motion capture camera to automatically capture the dancer's motion information, and transmit the motion information to the control host for analysis. Then use the projector to receive the motion information analyzed by the control host, and project the analyzed motion information onto the projection cloth body for teaching use. Step 5: Start the audio device through the control host, and use the audio device to play the video sound for learners to refer to and practice.

[0015] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art: 1. The above-mentioned support platform, bottom frame, control host, projection board, projection module, motion capture module, projection cloth assembly, etc. are used to form the entire interactive projection device for dance teaching, and the motion capture module, projection module and projection cloth assembly are assembled on the entire interactive projection device to form an integrated interactive projection structure, so as to achieve the effect of flexible use and reduce the use cost and maintenance cost; 2. By using the above-mentioned driving mechanism, the first position adjustment component, the projector, the second position adjustment component, the motion capture camera and the projection cloth component, the first position adjustment component, the second position adjustment component and the projection cloth component can be synchronously unfolded under the action of the same driving mechanism, so that the motion capture camera is gradually moved to one end of the entire interactive projection device, and the second gear and the second rack seat are meshed to drive the motion capture camera to rotate ninety degrees, and the projector is also synchronously moved to one end of the entire interactive projection device, and the first gear and the first rack seat are meshed to drive the projector to rotate ninety degrees, so that the projector is rotated to the front of the entire interactive projection device, and the winding roller and the projection cloth body are synchronously driven to unwind, so that the projection cloth body is laid on the projection board, so as to achieve the performance of facilitating the simultaneous unfolding of the projector, the motion capture camera and the projection cloth body, so that the entire interactive projection device for dance teaching has the effect of being easy to unfold and shrink; 3. By using the second position adjustment component, the downlight and the motion capture camera, when the second position adjustment component is unfolded, the downlight and the motion capture camera can be moved to one side of the entire interactive projection device, and the downlight is used to emit light and illuminate the classroom floor to form a light irradiation area, that is, the dancing activity range. At this time, the dancer can dance and teach in the light irradiation area, so that a certain distance is formed between the dancer and the projection cloth body, avoiding the problem of the dancer's body overlapping with the projection cloth body when dancing, and ensuring the integrity of the entire projection process; 4. By using the above-mentioned hydraulic scissor bracket and angle adjustment component, the height of the entire interactive projection device can be adjusted under the action of the hydraulic scissor bracket, and the angle adjustment component can be used to adjust the tilt angle of the motion capture camera, so that the motion capture camera can capture the movements of dancers of different heights, thereby enabling the entire interactive projection device to be applied to dancers of different heights, thereby increasing the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an interactive projection device for dance teaching according to the present invention; Figure 2 This is a working diagram of an interactive projection device for dance teaching according to the present invention; Figure 3 A three-dimensional cross-sectional view of an interactive projection device for dance teaching according to the present invention; Figure 4 This is a schematic diagram of the driving mechanism structure of an interactive projection device for dance teaching according to the present invention; Figure 5 This is a schematic structural diagram of a first insertion slot and a second insertion slot of an interactive projection device for dance teaching according to the present invention; Figure 6 This is a schematic diagram of the structure of a first rack seat of an interactive projection device for dance teaching according to the present invention; Figure 7 This is a schematic diagram of the structure of a second guide groove of an interactive projection device for dance teaching according to the present invention; Figure 8 It is a structural schematic diagram of a cloth storage chamber and a second rack seat of an interactive projection device for dance teaching according to the present invention; Fig. 9 This is a schematic diagram of the structure of a motion capture camera and an electric push rod of an interactive projection device for dance teaching according to the present invention; Fig.10 This is a schematic diagram of the inlet and outlet and anti-slip groove structure of an interactive projection device for dance teaching according to the present invention; Fig.11 This is a bottom view of a support platform of an interactive projection device for dance teaching according to the present invention; Fig.12 It is an expanded view of a hydraulic scissor bracket of an interactive projection device for dance teaching according to the present invention; Fig.13 The A in the middle is a map of the downlight illumination area or the dancing activity range.

[0017] Description of the numbers in the figure: 1. Support platform; 2. Bottom frame; 3. Control host; 4. Audio equipment; 5. Projection board; 6. Projection module; 7. Baffle; 8. U-shaped back cover; 9. Variable speed gear box; 10. Motion capture module; 11. Top frame; 12. Projection cloth assembly; 1201. Winding roller; 1202. Projection cloth body; 1203. Counterweight bar; 1204. Card slot; 1205. Cloth storage chamber; 1206. Inlet and outlet; 1207. Anti-slip groove; 13. First position adjustment assembly; 1301. First threaded rod; 1302. First steering rod; 1303. First equipment frame; 1304. First movable seat; 1305. First installation frame; 1306. First missing gear; 1307. First guide groove; 1308. First insertion groove; 1309. Connecting groove; 1310. First gear bar seat; 14, projector; 15, second position adjustment assembly; 1501, second mounting frame; 1502, first transmission belt; 1503, second steering rod; 1504, second equipment frame; 1505, second threaded rod; 1506, second movable seat; 1508, second missing gear; 1509, second insertion slot; 1510, second guide slot; 1511, second rack seat; 1512, first transmission wheel; 16, downlight; 17, hydraulic scissor bracket; 18, universal wheel; 19, driving mechanism; 1901, forward and reverse motor; 1902, large gear; 1903, small gear; 1904, second transmission belt; 1905, third transmission belt; 1906, through port; 20, motion capture camera; 21, slide rail; 22, electric push rod; 23, bottom slot. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0019] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] The present invention provides an interactive projection device for dance teaching. Figure 1-Figure 13 , including a support platform 1, a control host 3, a projection board 5, a projection module 6, a motion capture module 10 and a projection cloth assembly 12, the control host 3 is installed on the support platform 1, and the control host 3 is electrically connected to the projection module 6 and the motion capture module 10 through a control signal line, the motion capture module 10 includes a second position adjustment component 15 and a motion capture camera 20, and the motion capture camera 20 is used to automatically capture the dancer's motion information, and transmit the motion information to the control host 3 for analysis, the projection module 6 includes a first position adjustment component 13 and a projector 14, and the projector 14 is used to receive the motion information analyzed by the control host 3, and project the analyzed motion information on the projection cloth assembly 12, the motion capture module 10, the projection module 6 and the projection cloth assembly 12 are assembled on the entire interactive projection device to form an integrated interactive projection structure, to achieve the effect of flexible use, and to reduce the use cost and maintenance cost; A bottom frame 2 is fixedly installed on the top of the support platform 1, and a first position adjustment component 13 is installed in the bottom frame 2, and a projector 14 is installed at one end of the first position adjustment component 13. The first position adjustment component 13 includes a first threaded rod 1301 rotatably connected to the bottom of the inner wall of the U-shaped rear cover 8, and a first movable seat 1304 inserted into the bottom frame 2 is screwed on the first threaded rod 1301. A first guide groove 1307 for the first movable seat 1304 to pass through is opened on one side of the top of the bottom frame 2. A first mounting frame 1305 is fixed to the bottom of the first movable seat 1304, and a first steering rod 1302 is rotatably connected to the inner wall of the first mounting frame 1305. A first missing gear 1306 is coaxially fixed to one end of the bottom of the first steering rod 1302, and a first rack seat is fixedly installed on the bottom inner wall of the bottom frame 2 near the middle position. 1310, and the position of the first rack seat 1310 corresponds to the position of the first missing gear 1306, one end of the first turning rod 1302 is fixedly installed with the first device frame 1303, and the projector 14 is fixedly installed in the first device frame 1303, the projector 14 is designed to be inclined, one end of the bottom frame 2 is provided with a first insertion groove 1308 for the first device frame 1303 to be inserted, and one side of the bottom frame 2 is provided with a connecting groove 1309 for the first turning rod 1302 to turn, the connecting groove 1309 is connected with the inner wall of the bottom frame 2 and the inner wall of the first insertion groove 1308, and the first position adjustment component 13 can be unfolded, and the projector 14 is driven to rotate ninety degrees under the meshing action of the first missing gear 1306 and the first rack seat 1310, so that the projector 14 rotates to the front of the entire interactive projection device; The projection board 5 is fixedly mounted on one side of the top of the bottom frame 2, and a top frame 11 is fixedly mounted on the top of the projection board 5, a second position adjustment component 15 is mounted in the top frame 11, and a motion capture camera 20 is mounted at one end of the second position adjustment component 15, a stroke of the first position adjustment component 13 is half of a stroke of the second position adjustment component 15, the second position adjustment component 15 includes a second threaded rod 1505 rotatably connected to the top of the inner wall of the U-shaped rear cover 8, and a second movable seat 1506 inserted into the top frame 11 is screwed on the second threaded rod 1505, a second guide groove 1510 for the second movable seat 1506 to pass through is provided on one side of the bottom of the top frame 11, a second mounting frame 1501 is fixed on the top of the second movable seat 1506, and first transmission wheels 1512 are rotatably connected to both ends of the inner wall of the second mounting frame 1501, and a first transmission belt 1 is transmission-connected between the two first transmission wheels 1512. 502, a second missing gear 1508 is coaxially fixed on one of the first transmission wheels 1512, and a second rack seat 1511 is fixedly installed on the inner wall near one end of the top frame 11, and the position of the second rack seat 1511 corresponds to the position of the second missing gear 1508, a second steering rod 1503 is coaxially fixed on the other first transmission wheel 1512, a second device frame 1504 is fixedly installed on one end of the second steering rod 1503, and an angle adjustment component for adjusting the angle of the motion capture camera 20 is arranged in the second device frame 1504, and a second insertion slot 1509 for the second device frame 1504 to be inserted is provided at one end of the top frame 11, so that the motion capture camera 20 can be gradually moved to one end of the entire interactive projection device, and the motion capture camera 20 is driven to rotate ninety degrees under the meshing action of the second missing gear 1508 and the second rack seat 1511, so as to capture the dancer's frontal movements; The projection cloth assembly 12 is mounted on the top frame 11. The projection cloth assembly 12 includes a cloth storage chamber 1205 opened in the top frame 11. The inner wall of the cloth storage chamber 1205 is rotatably connected to a winding roller 1201. The winding roller 1201 is sleeved with a projection cloth body 1202. An inlet and outlet 1206 is opened on one side of the bottom of the cloth storage chamber 1205 for one end of the projection cloth body 1202 to extend out. A counterweight bar 1203 is fixedly installed at one end of the projection cloth body 1202. Two outer walls on the other side of the projection plate 5 are provided with a counterweight bar 1203. The top of the bottom frame 2 and the bottom of the top frame 11 are all equipped with baffles 7, and anti-slip grooves 1207 are provided at the corners of one side of the baffles 7. Both sides of the projection cloth body 1202 and both sides of the counterweight bar 1203 are located inside the anti-slip grooves 1207. The top of the bottom frame 2 is also equipped with a slot 1204 for the counterweight bar 1203 to be inserted, so as to facilitate the unwinding of the winding roller 1201 and the projection cloth body 1202, so that the projection cloth body 1202 can be fully laid on the projection board 5. A U-shaped rear cover 8 is fixedly installed between one side of the projection board 5, the top of the bottom frame 2 and the bottom of the top frame 11, and a driving mechanism 19 for driving the projection cloth assembly 12, the first position adjustment assembly 13 and the second position adjustment assembly 15 to unfold is installed on the U-shaped rear cover 8, and the driving mechanism 19 includes a forward and reverse motor 1901 fixedly installed on the inner wall of the U-shaped rear cover 8, and a second transmission wheel is fixedly installed on one side of the outer wall of the output shaft of the forward and reverse motor 1901 and one end of the outer wall of the winding roller 1201, and a second transmission belt 1904 is transmission-connected between the two second transmission wheels, and a through hole 1906 for the second transmission belt 1904 to pass through is opened on the top frame 11, a speed change gear box 9 is fixedly installed on the top of the outer wall of one end of the U-shaped rear cover 8, and the second threaded rod 1505 is fixedly installed on the outer wall of the second threaded rod 1505. One end and the output shaft of the forward and reverse motor 1901 extend to the interior of the speed change gear box 9, a large gear 1902 is installed on the other side of the outer wall of the output shaft of the forward and reverse motor 1901, and a small gear 1903 is installed at one end of the second threaded rod 1505, and the small gear 1903 is meshed with the large gear 1902. A third transmission wheel is fixedly installed on one side of the outer wall of the first threaded rod 1301 and one side of the outer wall of the second threaded rod 1505, and a third transmission belt 1905 is connected between the two third transmission wheels. Under the action of the same driving mechanism 19, the projector 14, the motion capture camera 20 and the projection cloth body 1202 can be easily unfolded at the same time, so that the entire interactive projection equipment for dance teaching has the effect of being easy to unfold and shrink.

[0022] In order to make the capture effect of the motion capture camera 20 better, refer to Fig. 9 The angle adjustment component includes an electric push rod 22 hinged on one end of the top inner wall of the second device frame 1504, and the motion capture camera 20 is hinged on one side inner wall of the second device frame 1504. A slide rail 21 is installed on the top of the motion capture camera 20, and a slide rod is installed on the piston end of the electric push rod 22. The slide rod is slidably arranged on the inner wall of the slide rail 21. By adopting the above-mentioned angle adjustment component, the tilt angle of the motion capture camera 20 can be adjusted so that it can fully correspond to the dancer, thereby ensuring the efficiency of motion capture.

[0023] In order to isolate the dancer from the projection cloth body 1202, refer to Figure 2 A downlight 16 is fixedly installed at one end of the bottom of the second turning rod 1503 close to the first transmission belt 1502, and the downlight 16 is electrically connected to the control host 3. By using the above-mentioned downlight 16, when the second position adjustment component 15 is unfolded, the downlight 16 and the motion capture camera 20 can be moved to one side of the entire interactive projection device, and the downlight 16 is used to emit light and illuminate the classroom floor to form a light irradiation area. At this time, dancers can dance and teach in the light irradiation area, so that a certain distance is formed between the dancers and the projection cloth body 1202, avoiding the problem of the dancer's body overlapping with the projection cloth body 1202 when dancing, thereby ensuring the integrity of the entire projection process.

[0024] In order to meet the dancing needs of dancers of different heights, refer to Figure 3 , Fig.11 and Fig.12 An audio device 4 is fixedly installed in the middle position of one side of the support platform 1, and the audio device 4 is electrically connected to the control host 3. A bottom groove 23 is opened at the bottom of the support platform 1, and a hydraulic scissor bracket 17 is fixedly installed on the inner wall of the bottom groove 23. Universal wheels 18 are fixedly installed at the four corners of the bottom of the hydraulic scissor bracket 17. The above-mentioned hydraulic scissor bracket 17 is used to make the entire interactive projection device have a height adjustment function, which is convenient for dancers of different heights, and the entire device can be moved easily under the action of the universal wheels 18.

[0025] An interactive projection method for dance teaching, applied to an interactive projection device for dance teaching, comprises the following steps: Step 1: The driving mechanism 19 is controlled by the control host 3 to synchronously unfold the first position adjustment component 13, the second position adjustment component 15 and the projection cloth component 12, so that the motion capture camera 20 is gradually moved to one end of the entire interactive projection device, and the motion capture camera 20 is driven to rotate ninety degrees under the meshing action of the second missing gear 1508 and the second rack seat 1511; the projector 14 is also synchronously moved to one end of the entire interactive projection device, and the projector 14 is driven to rotate ninety degrees under the meshing action of the first missing gear 1306 and the first rack seat 1310, so that the projector 14 rotates to the front of the entire interactive projection device; the winding roller 1201 and the projection cloth body 1202 are also synchronously driven to unwind, so that the projection cloth body 1202 is laid on the projection board 5; Step 2: Turn on the downlight 16 by controlling the host 3 so that the light is irradiated on the classroom floor to form a light irradiation area, and the dancer dances and teaches in the light irradiation area; Step 3: According to the height of the dancer, the height of the entire interactive projection device is adjusted using the hydraulic scissor bracket 17, and the tilt angle of the motion capture camera 20 is adjusted using the angle adjustment component; Step 4: Use the motion capture camera 20 to automatically capture the dancer's motion information, and transmit the motion information to the control host 3 for analysis, then use the projector 14 to receive the motion information analyzed by the control host 3, and project the analyzed motion information onto the projection cloth body 1202 for teaching use; Step 5: Start the audio device 4 by controlling the host 3, and use the audio device 4 to play the video sound for learners to refer to and practice.

[0026] In summary, the working principle of the present invention is as follows: when in use, the user first moves the entire interactive projection device to the corresponding position of the classroom through the universal wheel 18, and then controls the driving mechanism 19 to work through the control host 3, and drives the large gear 1902 and the second transmission belt 1904 to rotate through the forward and reverse motor 1901 in the driving mechanism 19. At this time, the meshing action of the large gear 1902 and the small gear 1903 is used to drive the second position adjustment component 15 to work, and the transmission action of the second transmission belt 1904 is also used to synchronously drive the projection cloth component 12 to work, and also The transmission effect of the third transmission belt 1905 is used to drive the first position adjustment component 13 to work, and the first threaded rod 1301 in the first position adjustment component 13 rotates, driving the first movable seat 1304, the first installation frame 1305, the first steering rod 1302, the first device frame 1303 and the projector 14 to move horizontally. When the first missing gear 1306 contacts the first rack seat 1310, it will drive the first steering rod 1302, the first device frame 1303 and the projector 14 to rotate ninety degrees, so that the projector 14 rotates to the front of the entire interactive projection device, and the first gear 1306 is rotated to the front of the first gear 1306. The second threaded rod 1505 in the second position adjustment assembly 15 rotates, driving the second movable seat 1506, the second installation frame 1501, the second steering rod 1503, the second device frame 1504 and the motion capture camera 20 to move horizontally. When the second missing gear 1508 contacts the second rack seat 1511, it will drive the first transmission belt 1502 to rotate, driving the second steering rod 1503, the second device frame 1504 and the motion capture camera 20 to rotate ninety degrees, and also synchronously driving the winding roller 1201 and the projection cloth body 1202 to unwind, so that the projection cloth The main body 1202 is laid on the projection board 5; then, the user turns on the downlight 16 by controlling the host 3, and uses the downlight 16 to emit light and illuminate the classroom floor to form a light irradiation area. At this time, the dancer can dance and teach in the light irradiation area; finally, the user can adjust the height of the entire interactive projection device under the action of the hydraulic scissor bracket 17, and use the electric push rod 22 in the angle adjustment component to adjust the inclination angle of the motion capture camera 20, so that the motion capture camera 20 can capture the movements of dancers of different heights and meet the needs of dancers of different heights.

[0027] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An interactive projection device for dance teaching, comprising a support platform (1), a control host (3), a projection board (5), a projection module (6), a motion capture module (10) and a projection cloth assembly (12), characterized in that: The control host (3) is mounted on the support platform (1), and the control host (3) is electrically connected to the projection module (6) and the motion capture module (10) via a control signal line, the motion capture module (10) comprises a second position adjustment component (15) and a motion capture camera (20), and the motion capture camera (20) is used to automatically capture the dancer's motion information and transmit the motion information to the control host (3) for analysis, the projection module (6) comprises a first position adjustment component (13) and a projector (14), and the projector (14) is used to receive the motion information analyzed by the control host (3), and project the analyzed motion information onto the projection cloth component (12); A bottom frame (2) is fixedly mounted on the top of the support platform (1), a first position adjustment component (13) is mounted in the bottom frame (2), and the projector (14) is mounted on one end of the first position adjustment component (13); The projection board (5) is fixedly mounted on one side of the top of the bottom frame (2), and a top frame (11) is fixedly mounted on the top of the projection board (5), the second position adjustment component (15) is mounted in the top frame (11), and the motion capture camera (20) is mounted on one end of the second position adjustment component (15); The projection cloth assembly (12) is mounted on the top frame (11); A U-shaped rear cover (8) is fixedly mounted between one side of the projection board (5), the top of the bottom frame (2) and the bottom of the top frame (11), and a driving mechanism (19) for driving the projection cloth assembly (12), the first position adjustment assembly (13) and the second position adjustment assembly (15) to unfold is mounted on the U-shaped rear cover (8).

2. The interactive projection device for dance teaching according to claim 1, characterized in that: The first position adjustment component (13) comprises a first threaded rod (1301) rotatably connected to the bottom of the inner wall of the U-shaped rear cover (8), and a first movable seat (1304) inserted into the bottom frame (2) is screwed onto the first threaded rod (1301), a first guide groove (1307) for the first movable seat (1304) to pass through is provided on one side of the top of the bottom frame (2), a first mounting frame (1305) is fixed to the bottom of the first movable seat (1304), and a first steering rod (1302) is rotatably connected to the inner wall of the first mounting frame (1305), a first missing gear (1306) is coaxially fixed to one end of the bottom of the first steering rod (1302), and the bottom inner wall of the bottom frame (2) near the middle position is provided with a first guide groove (1307) for the first movable seat (1304) to pass through. A first rack seat (1310) is fixedly installed, and the position of the first rack seat (1310) corresponds to the position of the first missing gear (1306); a first device frame (1303) is fixedly installed on one end of the first steering rod (1302), and the projector (14) is fixedly installed in the first device frame (1303); the projector (14) is designed to be inclined; a first insertion groove (1308) for the first device frame (1303) to be inserted is provided at one end of the bottom frame (2); and a connecting groove (1309) for the first steering rod (1302) to turn is provided on one side of the bottom frame (2); the connecting groove (1309) is connected to the inner wall of the bottom frame (2) and the inner wall of the first insertion groove (1308).

3. The interactive projection device for dance teaching according to claim 2, characterized in that: The second position adjustment component (15) comprises a second threaded rod (1505) rotatably connected to the top of the inner wall of the U-shaped rear cover (8), and a second movable seat (1506) inserted into the top frame (11) is screwed onto the second threaded rod (1505), a second guide groove (1510) for the second movable seat (1506) to pass through is opened on one side of the bottom of the top frame (11), a second installation frame (1501) is fixed on the top of the second movable seat (1506), and both ends of the inner wall of the second installation frame (1501) are rotatably connected to the first transmission wheels (1512), and a first transmission belt (1502) is transmission-connected between the two first transmission wheels (1512), and one of the first transmission wheels (1512) is connected to the second position adjustment component (155), and the second position adjustment component (155) is rotationally connected to the top of the second position adjustment component (155), and the first transmission belt (1502) is transmission-connected between the two first transmission wheels (1512). A second gear (1508) is coaxially fixed on the first transmission wheel (1512), and a second rack seat (1511) is fixedly installed on the inner wall of the top frame (11) near one end, and the position of the second rack seat (1511) corresponds to the position of the second gear (1508). A second steering rod (1503) is coaxially fixed on the other first transmission wheel (1512), and a second device frame (1504) is fixedly installed on one end of the second steering rod (1503), and an angle adjustment component for adjusting the angle of the motion capture camera (20) is arranged in the second device frame (1504), and a second insertion slot (1509) for the second device frame (1504) to be inserted is opened at one end of the top frame (11).

4. The interactive projection device for dance teaching according to claim 3, characterized in that: The angle adjustment component includes an electric push rod (22) hinged on one end of the top inner wall of the second device frame (1504), and the motion capture camera (20) is hinged on one side inner wall of the second device frame (1504), a slide rail (21) is installed on the top of the motion capture camera (20), and a slide rod is installed on the piston end of the electric push rod (22), and the slide rod is slidably arranged on the inner wall of the slide rail (21).

5. The interactive projection device for dance teaching according to claim 4, characterized in that: A downlight (16) is fixedly mounted on one end of the bottom of the second turning rod (1503) close to the first transmission belt (1502), and the downlight (16) is electrically connected to the control host (3).

6. The interactive projection device for dance teaching according to claim 5, characterized in that: The projection cloth assembly (12) comprises a cloth storage chamber (1205) provided in the top frame (11), and the inner wall of the cloth storage chamber (1205) is rotatably connected to a winding roller (1201), a projection cloth body (1202) is sleeved on the winding roller (1201), an inlet and outlet (1206) is provided on one side of the bottom of the cloth storage chamber (1205) for one end of the projection cloth body (1202) to extend out, and a counterweight bar (1203) is fixedly mounted on one end of the projection cloth body (1202).

7. The interactive projection device for dance teaching according to claim 6, characterized in that: Baffles (7) are installed at both ends of the outer wall of the other side of the projection board (5), the top of the bottom frame (2) and the bottom of the top frame (11), and anti-slip grooves (1207) are provided at the corners of one side of the baffles (7), both sides of the projection cloth body (1202) and both sides of the counterweight bar (1203) are located inside the anti-slip grooves (1207), and a slot (1204) for the counterweight bar (1203) to be inserted is also provided at the top of the bottom frame (2).

8. The interactive projection device for dance teaching according to claim 7, characterized in that: The driving mechanism (19) comprises a forward and reverse motor (1901) fixedly mounted on the inner wall of the U-shaped rear cover (8), and second transmission wheels are fixedly mounted on one side of the outer wall of the output shaft of the forward and reverse motor (1901) and one end of the outer wall of the winding roller (1201), a second transmission belt (1904) is connected between the two second transmission wheels, a through hole (1906) is provided on the top frame (11) for the second transmission belt (1904) to pass through, a speed change gear box (9) is fixedly mounted on the top of the outer wall of one end of the U-shaped rear cover (8), and the second threaded rod (1505) is One end of the second threaded rod (1505) and the output shaft of the forward and reverse motor (1901) both extend into the interior of the speed change gear box (9); a large gear (1902) is mounted on the other side of the outer wall of the output shaft of the forward and reverse motor (1901); a small gear (1903) is mounted on one end of the second threaded rod (1505); the small gear (1903) is meshed with the large gear (1902); a third transmission wheel is fixedly mounted on one side of the outer wall of the first threaded rod (1301) and one side of the outer wall of the second threaded rod (1505); and a third transmission belt (1905) is connected between the two third transmission wheels.

9. The interactive projection device for dance teaching according to claim 8, characterized in that: An audio device (4) is fixedly installed in the middle of one side of the support platform (1), and the audio device (4) is electrically connected to the control host (3). A bottom groove (23) is provided at the bottom of the support platform (1), and a hydraulic scissor bracket (17) is fixedly installed on the inner wall of the bottom groove (23). Universal wheels (18) are fixedly installed at the four bottom corners of the hydraulic scissor bracket (17).

10. An interactive projection method for dance teaching, applied to the interactive projection device for dance teaching according to claim 9, characterized in that: The following steps are involved: Step 1: Controlling the driving mechanism (19) by controlling the host (3) to operate, synchronously unfolding the first position adjustment component (13) and the second position adjustment component (15) as well as the projection cloth component (12), so that the motion capture camera (20) is gradually moved to one end of the entire interactive projection device, and the second missing gear (1508) and the second rack seat (1511) are meshed to drive the motion capture camera (20) to rotate ninety degrees; synchronously moving the projector (14) to one end of the entire interactive projection device, and the first missing gear (1306) and the first rack seat (1310) are meshed to drive the projector (14) to rotate ninety degrees, so that the projector (14) is rotated to the front of the entire interactive projection device; synchronously driving the reeling roller (1201) and the projection cloth body (1202) to unwind, so that the projection cloth body (1202) is laid on the projection board (5); Step 2: Turn on the downlight (16) by controlling the host (3) so that light is irradiated on the classroom floor to form a light irradiation area, and the dancer dances and teaches in the light irradiation area; Step 3: According to the height of the dancer, the height of the entire interactive projection device is adjusted using the hydraulic scissor bracket (17), and the tilt angle of the motion capture camera (20) is adjusted using the angle adjustment component; Step 4: using a motion capture camera (20) to automatically capture the dancer's motion information, and transmitting the motion information to a control host (3) for analysis, then using a projector (14) to receive the motion information analyzed by the control host (3), and projecting the analyzed motion information onto a projection cloth body (1202) for teaching purposes; Step 5: Start the audio device (4) by controlling the host computer (3), and use the audio device (4) to play the video sound for the learners to practice with.

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