CN106739704B - A kind of intelligent blackboard - Google Patents

Abstract

The invention relates to an intelligent blackboard, which is characterized in that the blackboard includes a module for moving the blackboard up and down, a first erasing dust suction device, a second erasing dust suction device and an intelligent control module, and the intelligent control module is used to control the blackboard moving up and down The module and the first erasing dust suction device and the second erasing dust suction device work; the first erasing dust suction device is located behind the up and down moving blackboard module, and the second erasing dust suction device is located on the right side of the up and down moving blackboard module The blackboard module that moves up and down includes a blackboard frame, a first stepping motor, a horizontal T-shaped blackboard surface, blackboard cloth, an upper rotating rod and a lower rotating rod; the horizontal T-shaped blackboard surface is nested in the blackboard frame, The upper space and the lower space between the shaped blackboard surface and the blackboard frame are respectively provided with an upper rotating rod and a lower rotating rod along the length direction of the blackboard frame, and the left and right ends of the upper rotating rod and the lower rotating rod are respectively connected to the corresponding rotating rod bracket connect.

Description

A smart blackboard

technical field

The invention belongs to the technical field of teaching supplies, and in particular relates to an intelligent blackboard, which can freely move up and down under the control of a single-chip microcomputer and can be automatically erased and dust-cleaned.

Background technique

With the advancement of science and technology and the deepening of the country's education system reform, the current multimedia teaching has become the mainstream of my country's education modernization. Reasonable selection and use of multimedia teaching in the teaching process, combined with traditional teaching methods, forms a reasonable teaching process structure, which can achieve the best teaching effect, but blackboard writing is still an irreplaceable important part of multimedia teaching in current teaching. Therefore, a convenient and practical smart blackboard is of great help to improve the quality of teaching.

At present, most school classrooms use traditional blackboard erasers to manually wipe blackboards, which will generate a lot of dust during the wiping process, which is not conducive to the health of teachers and students, and the efficiency of manual wiping is not high. In response to the above problems, product inventions of smart blackboards emerge in endlessly. For example, the Chinese patent No. ZL201410578130.3 discloses a smart blackboard. Wipe the blackboard repeatedly, the teaching is not continuous, and the wall resources are wasted. However, there are still some problems with this product. For example, one blackboard is always on the outside, and the other blackboard is always on the inside. When writing on the inner blackboard, when the inner blackboard is pulled up, the outer blackboard will block the inner blackboard. Therefore, the teacher can only bend down to write on the blackboard, or only write less content on the inner blackboard, wasting a lot of space resources on the inner blackboard.

In order to improve the teaching quality, solve the problem of waste of blackboard resources, and reduce the damage to teachers and classmates caused by the dust generated by wiping the blackboard, it is urgent to design a more convenient and applicable smart blackboard based on the existing blackboard.

Contents of the invention

The purpose of the present invention is to solve the problem of waste of resources on the blackboard surface in the alternate use of the existing two blackboards in teaching, and the problem that manual wiping of the blackboard is harmful to the health of teachers and students, the wiping efficiency is not high, and the problem of occupying classroom time is proposed. Reasonable and easy-to-use intelligent blackboard based on single-chip microcomputer control that can move freely up and down, can automatically erase chalk writing and absorb dust.

The technical solution adopted by the present invention to solve the technical problem is to provide an intelligent blackboard, which is characterized in that the blackboard includes a blackboard module that moves up and down, a first erasing dust suction device, a second erasing dust suction device and an intelligent control module, The intelligent control module is used to control the blackboard module moving up and down, the first erasing dust suction device and the second erasing dust suction device to work; the first erasing dust suction device is located at the rear of the blackboard module moving up and down, and the second erasing dust suction device The ash suction device is located on the right side of the blackboard module that moves up and down;

The blackboard module for moving up and down includes a blackboard frame, a first stepping motor, a horizontal T-shaped blackboard surface, blackboard cloth, an upper rotating rod and a lower rotating rod; The upper space and the lower space between the blackboard surface and the blackboard frame are respectively provided with an upper rotating rod and a lower rotating rod along the length direction of the blackboard frame, and the left and right ends of the upper rotating rod and the lower rotating rod are respectively connected to the corresponding rotating rod brackets through bearings , the two ends of the rotating rod support are respectively fixedly connected with the inner side of the blackboard frame and the outer side of the horizontal T-shaped blackboard surface; the blackboard cloth is covered on the outer surface of the horizontal T-shaped blackboard surface, and is parallel to the horizontal T-shaped blackboard surface , the inner surfaces of the upper and lower ends of the blackboard cloth are supported and connected with the upper rotating rod and the lower rotating rod respectively, and the blackboard cloth is moved up and down by the forward or reverse rotation of the upper rotating rod and the lower rotating rod; along the length direction of the blackboard frame, on the blackboard Slideways are arranged at the upper and lower ends of the frame; the left ends of the upper rotating rod and the lower rotating rod are prismatic rods, the prismatic rod of the upper rotating rod is connected with the first rotating gear, and the prismatic rod of the lower rotating rod is connected with the first rotating gear. Connect the second rotating gear, the first rotating gear and the second rotating gear are connected through the first transmission toothed belt, both the first rotating gear and the second rotating gear are meshed with the first transmission toothed belt; on the left side of the second rotating gear The prismatic rod of the lower rotating rod on the side is also connected with a third rotating gear, the first stepping motor is installed on the left side of the blackboard frame, the output shaft of the first stepping motor is connected with the fourth rotating gear, and the fourth The rotating gear and the third rotating gear are connected through the second transmission toothed belt, and the fourth rotating gear and the third rotating gear are both meshed with the second transmission toothed belt;

A rotating hand wheel and a fifth rotating gear are installed in the horizontal T-shaped blackboard on the left side of the first transmission toothed belt. The fifth rotating gear is fixed on the output shaft of the rotating hand wheel. A sixth rotation gear is connected to the prismatic rod of the rotation rod, the fifth rotation gear and the sixth rotation gear are connected through the third transmission toothed belt, and the fifth rotation gear and the sixth rotation gear are both meshed with the third transmission toothed belt;

The first dust-absorbing device for erasing is fixed under the back of the blackboard frame, and includes a first dust-absorbing structure, a first eraser and a dust-absorbing box. The first dust-absorbing structure is located at the center of the back of the blackboard frame, and the first dust-absorbing The length of the structure matches the width of the blackboard cloth. A rotating fan is arranged in the first ash-absorbing structure. A first blackboard eraser is arranged at the lower end of the first ash-absorbing structure along the length direction of the blackboard frame. Contact, on the lower supporting plate of the blackboard frame, ash suction box is set along the length direction of the blackboard frame, the ash suction box is connected with the first ash suction device, the inside of the ash suction box is equipped with an exhaust fan, and the right end is provided with a retractable hose interface;

The second dust-absorbing device for erasing is fixed on the right end of the blackboard frame, and includes a second dust-absorbing structure, a second blackboard eraser, a fixed pulley, a scissor-type telescopic structure, a second stepping motor, a first steel plate, a second steel plate, Crank connecting rod fixed rod, connecting rod and crank connecting rod structure; a rotating fan is installed inside the second ash suction structure, and a telescopic hose interface is provided at the bottom end, and the telescopic hose interface of the second ash suction structure is connected with the suction suction structure. The flexible hose interface at the right end of the ash box is connected through a flexible hose; the upper and lower ends of the second ash suction structure are respectively equipped with fixed pulleys, and the two fixed pulleys are respectively matched with the slideways on the corresponding sides, so that they can be connected with the fixed pulleys. The second eraser can move in the plane where the blackboard cloth is located; the right end of the second eraser is fixed to the left end of the scissors-type telescopic structure by bolts and nuts, and the fixed end of the scissors-type telescopic structure is fixed on the first steel plate. One steel plate is fixed on the horizontal T-shaped blackboard surface, and the non-fixed end of the scissor-type telescopic structure is fixed on the second steel plate. There is a protrusion on the outer center of the second steel plate. The protrusion is connected with a cylindrical ring, and the cylindrical ring is sleeved on the crank. On the rod fixing rod, the upper end and the lower end of the crank connecting rod fixing rod are respectively fixed with the upper part and the left part of the blackboard frame; the upper end of the connecting rod is connected with the protrusion of the second steel plate, and the lower end is connected with one end of the crank structure. The other end is connected with the output shaft of the second stepping motor;

The intelligent control module includes a single-chip microcomputer, a driving circuit, a power supply circuit and a voice recognition circuit, and the single-chip microcomputer is connected with the driving circuit, the power supply circuit and the voice recognition circuit respectively, and the driving circuit is respectively connected with the rotating fan, the exhaust fan, the first step The motor is electrically connected with the second stepping motor, and supplies power to the whole blackboard through the power supply circuit.

Compared with prior art, the beneficial effect of the present invention is:

1) The structure design of the present invention is novel, and at the same time, it has the function of intelligently moving the blackboard up and down and automatically erasing chalk writing and automatically absorbing dust. It is convenient and fast during use, can save human resources, improve classroom efficiency, and reduce the impact of chalk dust on teachers and Hazards to the health of students;

2) The present invention uses a stepping motor to drive the rotating gear to rotate, the rotating gear drives the rotating rod to rotate, the rotating rod drives the blackboard cloth to rotate, and the positive and negative rotation of the stepping motor can make the blackboard cloth move up and down in the same plane, which solves the problem of existing push-pull Insufficient utilization of the blackboard surface inside the blackboard; at the same time, it has the function of manually raising and lowering the blackboard, and the rotating hand wheel can be rotated counterclockwise or clockwise to freely raise and lower the blackboard. Therefore, the field of application of the present invention is wider.

3) The present invention has two blackboard erasing dust-absorbing devices, when the first erasing dust-absorbing device behind the blackboard surface cannot work, the spare second erasing dust-absorbing device on the outside right end of the blackboard surface can work immediately, which improves the The work efficiency of the present invention avoids the suspension of class due to the failure of teaching equipment; and the first erasing dust suction device does not need to press a button, and the single chip microcomputer controls the first erasing dust suction device to erase chalk writing after the blackboard cloth stops lifting And suck ashes.

Description of drawings

Fig. 1 is the structural block diagram of intelligent blackboard of the present invention;

Fig. 2 is a schematic diagram of the overall structure of an embodiment of the smart blackboard of the present invention;

Fig. 3 is a schematic structural diagram of the blackboard module 1 moving up and down after the smart blackboard of the present invention removes the blackboard cloth;

Fig. 4 is a schematic diagram of the transmission structure of the upper rotating rod 102 and the lower rotating rod 103 of the smart blackboard of the present invention;

Fig. 5 is a schematic diagram of the transmission structure of the lower rotating rod 103 and the first stepping motor 111 of the smart blackboard of the present invention;

Fig. 6 is a schematic diagram of the transmission structure of the rotating hand wheel 114 and the lower rotating rod 103 of the smart blackboard of the present invention;

Fig. 7 is a schematic diagram of the overall structure of the first erasing and ash-absorbing device 2 of the smart blackboard of the present invention;

Figure 8 is a schematic diagram of the overall structure of the second erasing and ash-absorbing device 3 of the smart blackboard of the present invention;

Fig. 9 is a schematic diagram of the connection structure between the second eraser 302 and the slideway 105 of the intelligent blackboard of the present invention;

Fig. 10 is a schematic diagram of the internal structure connected to the right end of the scissor type telescopic device 304 of the present invention;

Figure 11 is a schematic diagram of the structure after adding the second steel plate and crank connecting rod fixing rod on the basis of Figure 10;

Fig. 12 is a schematic diagram of the crank connecting rod structure of the smart blackboard of the present invention;

Fig. 13 is a structural block diagram of the intelligent control module 4 of the intelligent blackboard of the present invention.

Among them, 1-moving the blackboard module up and down, 2-the first erasing dust suction device, 3-the second erasing dust suction device, 4-intelligent control module, 101-horizontal T-shaped blackboard surface, 102-upper rotating rod, 103 -lower rotating rod, 104-blackboard cloth, 105-slide, 106-the first rotating gear, 107-the second rotating gear, 108-the first transmission toothed belt, 109-the third rotating gear, 110-blackboard frame, 111 -the first stepping motor, 112-the fourth rotating gear, 113-the second transmission toothed belt, 114-rotating hand wheel, 115-the fifth rotating gear, 116-the sixth rotating gear, 117-the third transmission toothed belt; 201-the first dust suction structure, 202-the first blackboard eraser, 203-the dust suction box, 301-the second dust suction structure, 302-the second blackboard eraser, 303-fixed pulley, 304-scissor type telescopic device, 305-the first Two stepper motors, 306-first steel plate, 307-second steel plate, 308-crank connecting rod fixed rod, 309-connecting rod, 310-crank structure, 3041-non-fixed end of scissors telescopic device, 3042-scissors 401-single-chip microcomputer, 402-drive circuit, 403-power supply circuit, 404-speech recognition circuit.

detailed description

The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but this should not be used as a limitation to the scope of protection of the claims of the present application.

The intelligent blackboard of the present invention (see Fig. 1-13) comprises moving blackboard module 1 up and down, first erasing ash suction device 2, second erasing ash suction device 3 and intelligent control module 4, and described intelligent control module is used for controlling up and down The mobile blackboard module 1 and the first erasing dust suction device 3 and the second erasing dust suction device 4 work; the first erasing dust suction device 2 is located at the rear of the blackboard module 1 moving up and down, and the second erasing dust suction device 3 Located on the right side of the up and down blackboard module 1;

The blackboard module 1 that moves up and down includes a blackboard frame 110, a first stepping motor 111, a horizontal T-shaped blackboard surface 101, a blackboard cloth 104, an upper rotating rod 102 and a lower rotating rod 103; the blackboard frame 110 is nested with a horizontal T T-shaped blackboard surface 101, the upper space and the lower space between the horizontal T-shaped blackboard surface 101 and the blackboard frame are respectively provided with an upper rotating rod 102 and a lower rotating rod 103 along the length direction of the blackboard frame, and the upper rotating rod 102 and the lower rotating rod 103 The left and right ends of the blackboard are respectively connected to the corresponding rotating rod brackets through bearings, and the two ends of the rotating rod brackets are respectively fixedly connected with the inner side of the blackboard frame and the outer side of the horizontal T-shaped blackboard surface; the blackboard cloth 104 is set on the horizontal T-shaped On the outer surface of the blackboard surface 101, and parallel to the horizontal T-shaped blackboard surface 101, the inner surfaces of the upper and lower ends of the blackboard cloth are supported and connected with the upper rotating rod 102 and the lower rotating rod 103 respectively, and the outer surface of the blackboard cloth is smooth for writing. Chalk characters, the inner surface is rough, through the positive or reverse rotation of the upper rotating rod 102 and the lower rotating rod 103, the blackboard cloth is driven to move up and down, so that the blackboard cloth rises or falls; slideways 105 are arranged at both ends; the left ends of the upper rotating rod 102 and the lower rotating rod 103 are prismatic rods, the first rotating gear 106 is connected on the prismatic rod of the upper rotating rod, and the prismatic rod of the lower rotating rod Connect the second rotating gear 107, the first rotating gear 106 and the second rotating gear 107 are connected by the first transmission toothed belt 108, the first rotating gear 106 and the second rotating gear 107 are all meshed with the first transmission toothed belt 108 on the prismatic rod of the lower rotating rod on the left side of the second rotating gear 107, the third rotating gear 109 is also connected, and the first stepping motor 111 is installed on the left side of the blackboard frame, and the first stepping motor 111 The output shaft is connected with the fourth rotating gear 112, the fourth rotating gear 112 and the third rotating gear 109 are connected through the second transmission toothed belt 113, the fourth rotating gear 112 and the third rotating gear 109 are connected with the second transmission toothed belt 113 Engage;

The first stepper motor 111 rotates, driving the fourth rotating gear 112 to rotate, and the fourth rotating gear 112 drives the third rotating gear 109 to rotate through the second transmission toothed belt 113, thereby driving the lower rotating rod 103 to rotate, and then driving the second rotating gear 107 rotates, and the upper rotating rod 102 is driven to rotate by the first transmission toothed belt 108 and the first rotating gear 106, finally drives the blackboard cloth 104 to rotate, and realizes the rise or fall of the blackboard cloth 104;

Rotating handwheel 114 and the fifth rotating gear 115 are installed in the horizontal T-shaped blackboard surface 101 on the left side of the first transmission toothed belt 108, and the fifth rotating gear 115 is fixed on the output shaft of rotating handwheel 114. The prismatic rod of the lower rotating rod on the left side of rotating gear 109 is connected with the sixth rotating gear 116, the fifth rotating gear 115 and the sixth rotating gear 116 are connected by the third transmission toothed belt 117, the fifth rotating gear 115 and the sixth rotating gear The rotating gears 116 are all meshed with the third transmission toothed belt 117; rotating the rotating hand wheel 114 drives the fifth rotating gear 115 to rotate, and drives the lower rotating rod 103 to rotate through the third transmission toothed belt 117 and the sixth rotating gear 116, and then drives The second rotating gear 107 rotates, drives the upper rotating rod 102 to rotate through the first transmission toothed belt 108 and the first rotating gear 106, finally drives the blackboard cloth 104 to rotate, and manually realizes the rising or falling of the blackboard cloth 104;

The first dust-absorbing device 2 for erasing (referring to Fig. 7) is fixed on the back side of the blackboard frame 110, and comprises a first dust-absorbing structure 201, a first blackboard eraser 202 and an ash-absorbing box 203, and the first dust-absorbing structure 201 Located in the center of the back of the blackboard frame 110, the length of the first ash-absorbing structure 201 matches the width of the blackboard cloth 110, a rotating fan is arranged in the first ash-absorbing structure 201, and a fan is arranged at the lower end of the first ash-absorbing structure along the length direction of the blackboard frame. There is a first blackboard eraser 202, the erasing surface of the first blackboard eraser is in contact with the blackboard cloth, and an ash suction box 203 is arranged along the length direction of the blackboard frame on the lower support plate of the blackboard frame, and the ash suction box 203 communicates with the first ash suction device 201 , the ash suction box 203 is equipped with an exhaust fan, and the right end is provided with a flexible hose interface;

The second dust-absorbing device 3 for erasing (referring to Fig. 8) is fixed on the right end of the blackboard frame 110, and includes a second dust-absorbing structure 301, a second blackboard eraser 302, a fixed pulley 303, a scissors type telescopic structure 304, the second step Into the motor 305, the first steel plate 306, the second steel plate 307, the crank connecting rod fixed rod 308, the connecting rod 309 and the crank connecting rod structure 310; the second dust suction structure 301 is equipped with a rotating fan inside, and the bottom end is provided with a Telescopic hose interface, the telescopic hose interface of the second ash suction structure 301 is connected with the telescopic hose interface at the right end of the ash suction box through a telescopic hose, and the ash is sucked by the rotating fan and exhaust fan; the second ash suction structure 301 Fixed pulleys 303 are installed at the upper and lower ends of the upper and lower ends respectively, and the two fixed pulleys are matched with the slideways 105 on the corresponding sides respectively, so that the second blackboard eraser 302 connected with the fixed pulleys can move in the plane where the blackboard cloth 110 is located; the second blackboard eraser 302 The right end of the scissor-type telescopic structure 304 is fixed to the left end by bolts and nuts, and the fixed end 3042 of the scissor-type telescopic structure 304 is fixed on the first steel plate 306, and the first steel plate 306 is fixed on the horizontal T-shaped blackboard surface 101 , the non-fixed end 3041 of the scissor-type telescopic structure is fixed on the second steel plate 307, and the outer center of the second steel plate is provided with a protrusion. The upper end and the lower end of the rod fixing rod 308 are respectively fixed with the upper part and the left part of the blackboard frame 110; One end is connected to the output shaft of the second stepping motor 305; the second stepping motor 305 rotates, and the crank connecting rod structure 310 drives the second steel plate 307 to move up and down along the crank connecting rod fixed rod 308 through the connecting rod 309, thereby driving the scissors The non-fixed end of the telescopic structure moves up and down, pushing the second ash suction structure 301 and the second eraser 302 to move to the left along the slideway 105, and at the same time, the rotating fan in the second ash suction structure 301 and the exhaust fan in the ash suction box 203 start to work, Absorb chalk dust, while the second blackboard eraser 302 erases the remaining writing;

Described intelligent control module 4 (referring to Fig. 13) comprises single-chip microcomputer 401, driving circuit 402, power supply circuit 403 and speech recognition circuit 404, and described single-chip microcomputer 401 is connected with driving circuit 402, power supply circuit 403 and speech recognition circuit 404 respectively, and described The driving circuit 402 is electrically connected with the rotating fan, the exhaust fan, the first stepping motor 111 and the second stepping motor 305 respectively, and realizes accurate positioning and speed regulation of the first stepping motor 111 and the second stepping motor 305, and controls The rotating fan and exhaust fan work, supplying power to the whole blackboard through the power supply circuit 403, and the voice recognition circuit 404 can control the first erasing and ash suction device 2 to work by voice.

A further feature of the present invention is that the single-chip microcomputer 401 adopts the STM32F101R6 single-chip microcomputer, which has low cost and low power consumption; the first stepping motor 111 and the second stepping motor 305 all adopt 150 series three-phase stepping motors, and its driver For F3922 series products.

A further feature of the present invention is that the blackboard cloth is a rectangular thick cloth with a smooth outer surface for writing chalk characters and a rough inner surface. The forward or reverse rotation of the upper rotating rod 102 and the lower rotating rod 103 drives the blackboard cloth Move up and down to make the blackboard cloth rise or fall.

The working process of the intelligent blackboard of the present invention is: first turn on the power supply, and observe whether the power indicator light is on. If the power indicator light is off, it means that the intelligent control module is not working. You can only manually lift the blackboard and manually erase the chalk writing; if the power indicator light is on, it means that the intelligent control module is in the working state. Judging whether there is a voice input, if there is no voice input, the single-chip microcomputer drives the first stepper motor 111 to rotate forward, the blackboard cloth moves up, and the motor forward rotation button is turned off, the first erasing dust suction device works, if the first erasing dust suction device If it does not work, the single-chip microcomputer controls the second stepper motor 305 to drive the second erasing dust suction device to work. If the second erasing dust suction device does not work, the voice prompts to manually erase the chalk writing; if there is voice input, directly drive the first wiper. The ash removal device works. If the motor reverse button is pressed, the single-chip microcomputer judges whether there is a voice input, if there is no voice input, the first stepper motor 111 is driven to reverse, the blackboard cloth moves down, the motor reverse button is closed, and the first erase dust suction device is driven to work, if The first erasing dust suction device does not work, drive the second erasing dust suction device to work, if the second erasing dust suction device does not work, voice prompts to manually erase chalk writing; if there is voice input, directly drive the first blackboard to work .

The orientation words such as front, back, left and right described in the present invention are relative concepts, wherein the direction where the second erasing dust suction device 3 is located is right, the direction where the rotating handwheel 114 is located is left, and the direction where the blackboard cloth is located is It is the front, and the direction of the horizontal T-shaped blackboard surface 101 is the back.

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, so the present invention includes and is not limited to the embodiments described in the specific implementation, and those skilled in the art according to the technology of the present invention Other implementations derived from the scheme also belong to the protection scope of the present invention.

Claims (3)

1. a kind of intelligent blackboard, it is characterised in that the blackboard includes moving up and down blackboard module, the first erasing suction apparatus for ash, second Apparatus for ash and intelligent control module are inhaled in erasing, and the intelligent control module, which is used for controlling, moves up and down blackboard module and the first erasing Inhale apparatus for ash and the second erasing is inhaled apparatus for ash and is operated；First erasing inhales apparatus for ash after blackboard module is moved up and down Side, the second erasing inhale apparatus for ash and are located at the right side for moving up and down blackboard module；

The blackboard module that moves up and down includes blackboard framework, the first stepper motor, horizontal T-shaped blackboard surface, blackboard cloth, upper swingle With lower swingle；The blackboard framework is nested with horizontal T-shaped blackboard surface, and the top between horizontal T-shaped blackboard surface and blackboard framework is empty Between and lower space upper swingle and lower swingle, upper swingle and lower swingle are set respectively along blackboard framework length direction Left and right ends connected respectively by bearing with corresponding swingle support, the both ends of the swingle support respectively with blackboard frame The inner side of frame be fixedly connected on the outside of horizontal T-shaped blackboard surface；The blackboard cloth is enclosed on the outer surface of horizontal T-shaped blackboard surface, and with Horizontal T-shaped blackboard surface is parallel, and the upper and lower ends inner surface of blackboard cloth connects with upper swingle and the support of lower swingle respectively, by upper The rotation forward or backwards of swingle and lower swingle drives blackboard cloth to move up and down；Along blackboard framework length direction, in blackboard The upper and lower ends of framework are arranged with slideway；The left end of the upper swingle and lower swingle is prism-shaped bar, upper swingle Prism-shaped bar on the rotation gear of connection first, the rotation of connection second gear, the first rotary teeth on the prism-shaped bar of lower swingle Connected between wheel and the second rotation gear by the first cogged drive belt, the first rotation gear and the second rotation gear pass with first Moving teeth band is meshed；The 3rd rotation gear, institute are also associated with the prism-shaped bar of lower swingle on the left of the second rotation gear The left side that the first stepper motor is arranged on blackboard framework is stated, the output shaft of the first stepper motor is connected with the 4th rotation gear, the Four rotation gears and the 3rd rotation gear connects by the second cogged drive belt, and the 4th rotation gear and the 3rd rotates gear with the Two cogged drive belts are meshed；

Rotation hand wheel and the 5th rotation gear, the 5th rotation are installed in the horizontal T-shaped blackboard surface in the left side of the first cogged drive belt Gear is fixed on the output shaft of rotation hand wheel, and the is connected with the prism-shaped bar of the lower swingle on the left of the 3rd rotation gear Six rotation gears, the 5th rotation gear and the 6th rotation gear are connected by the 3rd cogged drive belt, the 5th rotation gear and the 6th Rotation gear is meshed with the 3rd cogged drive belt；

First erasing inhales apparatus for ash and is fixed on the lower rear of blackboard framework, including first inhale grey structure, the first blackboard eraser and Ash bin is inhaled, described first inhales the back side center that grey structure is located at blackboard framework, and first inhales the width of the length of grey structure and blackboard cloth Degree matches, and first inhales setting rotary fan in grey structure, and the lower end edge blackboard framework length direction that grey structure is inhaled first is set There is the first blackboard eraser, the erasing face of the first blackboard eraser contacts with blackboard cloth, is grown on the lower support plate of blackboard framework along blackboard framework Spend direction and set and inhale ash bin, inhale ash bin and be connected with the first suction apparatus for ash, inhale and air exhauster is housed inside ash bin, right-hand member, which is provided with, to be stretched Contracting hose connection；

The right-hand member that apparatus for ash is fixed on blackboard framework is inhaled in second erasing, including second inhales grey structure, the second blackboard eraser, fixed cunning Wheel, scissor type telescopic structure, the second stepper motor, the first steel plate, the second steel plate, crank connecting link fix bar, connecting rod and crank connect Bar structure；Described second, which inhales grey inside configuration, is provided with rotary fan, and bottom is provided with Telescopic flexible pipe interface, and second inhales grey structure Telescopic flexible pipe interface with inhale ash bin right-hand member Telescopic flexible pipe interface be connected by Telescopic flexible pipe；Second inhales grey structure Upper and lower ends are separately installed with fixed block, and slideway of two fixed blocks respectively with corresponding side matches, and make and fixed block The second connected blackboard eraser can where blackboard cloth move in plane；The right-hand member of second blackboard eraser and the left end of scissor type telescopic structure Fixed by screw bolt and nut, the fixing end of scissor type telescopic structure is fixed on the first steel plate, and first Interal fixation exists On horizontal T-shaped blackboard surface, scissor type telescopic structure on-fixed end is fixed on the second steel plate, and the second steel plate outer side center is provided with convex Rise, the projection is connected with cylinder ring, and cylinder ring is enclosed in crank connecting link fix bar, the top and bottom point of crank connecting link fix bar Do not fixed with the top of blackboard framework and left part；Small end is connected with the projection of the second steel plate, lower end and crank structure One end is connected, the output axis connection of the other end of crank structure and the second stepper motor；

The intelligent control module includes single-chip microcomputer, drive circuit, power circuit and speech recognition circuit, the single-chip microcomputer difference Be connected with drive circuit, power circuit and speech recognition circuit, the drive circuit respectively with the first rotary wind for inhaling grey structure Fan, the second rotary fan, air exhauster, the first stepper motor and the second stepper motor for inhaling grey structure electrically connect, and pass through power supply electricity Road powers for whole blackboard.

2. intelligent blackboard according to claim 1, it is characterised in that the single-chip microcomputer uses STM32F101R6 single-chip microcomputers； First stepper motor and the second stepper motor use 150 series three phase stepper motors, and its driver is F3922 series productions Product.

3. intelligent blackboard according to claim 1, it is characterised in that the blackboard cloth is the coarse outside light of rectangle inner face Sliding thick cloth.