CN104139647A - Automatic blackboard and control system thereof - Google Patents

Automatic blackboard and control system thereof Download PDF

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Publication number
CN104139647A
CN104139647A CN201410372904.7A CN201410372904A CN104139647A CN 104139647 A CN104139647 A CN 104139647A CN 201410372904 A CN201410372904 A CN 201410372904A CN 104139647 A CN104139647 A CN 104139647A
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CN
China
Prior art keywords
blackboard
frame
cylinder
motor
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410372904.7A
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Chinese (zh)
Inventor
郑焕斌
程乾
胡家贵
张殿喜
周士芸
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Anshun University
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Anshun University
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Publication date
Application filed by Anshun University filed Critical Anshun University
Priority to CN201410372904.7A priority Critical patent/CN104139647A/en
Publication of CN104139647A publication Critical patent/CN104139647A/en
Pending legal-status Critical Current

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Abstract

The invention provides an automatic blackboard which comprises an upper roller, a frame, a blackboard body, a supporting plate, a lower roller and a roller brush. The upper roller is installed inside the upper portion of the frame, a driven wheel B is installed inside the lower portion of the frame, the axes of the upper roller and the lower roller are parallel to the length direction of the frame, and the two ends of the upper roller and the two ends of the lower roller are movably installed inside the left side and the right side of the frame respectively. The blackboard body is in an annular shape and is installed on the upper roller and the lower roller. The roller brush makes contact with the outer side of the rear portion of the blackboard body. The two ends of the roller brush are movably installed inside the left side and the right side of the frame respectively. According to the automatic blackboard, the defect that a traditional blackboard is passive and not flexile is overcome, blackboard cleaning can be started and stopped at any time, control is flexible, remote control and close-range manual button control can be achieved, and manual blackboard cleaning can be carried out when a power failure occurs or a control system breaks down; a projection cloth capable of being remotely controlled is further arranged on the upper portion of the backboard, so that inconvenience brought by separating arrangement of the automatic blackboard and the projection cloth is avoided.

Description

A kind of automatic blackboard and control system thereof
Technical field
The present invention relates to a kind of automatic blackboard and control system thereof.
Background technology
The respiratory tract that in air, dust enters people can give rise to diseases.The blackboard that each school is now used is the traditional blackboard of manually wiping mostly, and the classroom of teaching has affected teen-age academic environment because high-frequency use blackboard produces a large amount of dust, also directly teachers ' health is worked the mischief.
Because the space in classroom is more limited, common classroom is only provided with common blackboard, and projection cloth is not set, and multi-media classroom is only installed projection cloth and blackboard is not installed, cause the teacher who attends class at classroom just can only on blackboard, write at leisure, lose time very much; And the teacher who attends class in multi-media classroom needs there is no blackboard write time on blackboard temporarily.
Chinese patent ZL201120485046.9 discloses a kind of fully automatic blackboard, can be automatically blackboard wiping plate body fast, required muscle power while having saved classroom instruction time and the manual blackboard wiping of teacher, and chalk powder under wiping can not fly around, and solved the wiping problem of blackboard.Chinese patent ZL201220703596.8 discloses a kind of full-automatic dust removing blackboard, this full-automatic dust removing blackboard can allow teacher's automatic-cleaning backboard when writing on the blackboard is given lessons, not only save the class period, and prevent that chalk dust from flying upward, this patent is installed a magnetic suction block at the back of blackboard writing face, to facilitate laminating to write, underaction while plate face being rotated due to the existence of magnetic suction block, these two patents all can not solve automatic blackboard and projection cloth and divide the brought inconvenience that is arranged.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of automatic blackboard, this automatic blackboard is by add projection cloth above automatic blackboard, and adds wireless remote control control system, solved automatic blackboard and projection cloth and divided the brought problem that is arranged.
The present invention is achieved by the following technical programs.
A kind of automatic blackboard provided by the invention, comprises cylinder, frame, blackboard body, gripper shoe, bottom roll and round brush; Frame upper inner is provided with cylinder, and lower inside is provided with driven pulley B, and described upper cylinder and the axis of bottom roll and the length direction of frame are parallel, and the two ends of described upper cylinder and bottom roll are movably installed in respectively the inner side, the left and right sides of frame; Described blackboard body be ring-type and be installed on cylinder and bottom roll on, the inner side of described blackboard body is provided with gripper shoe, distance between the anterior inner side of described gripper shoe and blackboard body is 0~10mm, and described gripper shoe is placed between cylinder and driven pulley B, the two ends of described gripper shoe are fixedly connected with the left and right sides of frame, described round brush contacts with the rear outside of blackboard body, and the two ends of described round brush are movably installed in the inner side, the left and right sides of frame.
The top of described frame is also provided with projection cloth cylinder, and described projection cloth cylinder is placed in the front of cylinder, and the two ends of described projection cloth cylinder are movably installed in respectively the inner side, the left and right sides of frame.
The end of described projection cloth cylinder is also provided with driven pulley A, described driven pulley A and driving wheel A engaged transmission, and described driving wheel A is connected with the output shaft of controlling motor.
The end of described bottom roll, round brush is also respectively arranged with driven pulley B and driven pulley C, described driven pulley B, driven pulley C all with driving wheel B engaged transmission, described driving wheel B with control the output shaft of motor and be connected.
The left side of described frame or right side are provided with button assembly, chalk case and blackboard eraser case, and the below of described round brush is provided with chalk ash collection box.
Described blackboard body is magnetic soft blackboard.
A kind of control system of automatic blackboard, comprise reset control module, central processing module, wireless transmission receiver module, manual control module, motor control module M and motor control module N, described reset control module is connected with the reset signal input of central processing module, described wireless transmission receiver module is connected with the P2 mouth of central processing module, described manual control module is connected with the P1 mouth of central processing module, described P1 mouth, P2 mouth is all two-way I/O mouths, the two-way I/O mouth P2 mouth of described central processing module respectively with motor control module M, the signal input part of motor control module N connects.The master chip of described central processing module is STC89C51.
The EA/VPP end of described STC89C51 chip is connected with power supply.
Motor M in described motor control module M, motor control module N, the both positive and negative polarity of motor N are respectively through different relay auxiliary contact ground connection, and the link of power supply is arranged within the scope of the actuating length of each relay auxiliary contact; One end of the relay corresponding with described relay auxiliary contact is connected with power supply, and the other end is connected with the colelctor electrode of triode, the grounded emitter of described triode, and base stage is connected with the control signal output of central processing module through a resistance.
Beneficial effect of the present invention is: overcome the passive situation such as dumb of traditional blackboard, can freely realize at vertical guide rotation back side erasing writing vestige, with wiping with stopping, control flexibly, can also realize long-distance remote control control, closely hand push button control, manually wiping when appearance has a power failure or control system breaks down, blackboard top is also provided with remote-controlled projection cloth, has solved automatic blackboard and projection cloth and has divided the brought inconvenience that is arranged; Chalk ash collection obturator has been designed in round brush below, makes whole equipment reach the effect of dustlessization; This machinery equipment has increased Wireless remote control device simultaneously, allow teacher in classroom, can control whenever and wherever possible blackboard eraser except and the action such as projection cloth folding and unfolding.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the profile along A-A in Fig. 1;
Fig. 3 is the theory diagram of control system of the present invention;
Fig. 4 is the circuit diagram of control system of the present invention;
Fig. 5 is the control circuit figure of motor M;
Fig. 6 is motor M forward drive circuit figure;
Fig. 7 is motor M reversing drive circuit figure;
Fig. 8 is the control circuit figure of motor N;
Fig. 9 is motor N forward drive circuit figure;
Figure 10 is motor N reversing drive circuit figure;
In figure: the upper cylinder of 1-, 2-frame, 3-projection cloth cylinder, 4-driven pulley A, 5-driving wheel A, 6-blackboard body, 7-gripper shoe, 8-button assembly, 9-chalk case, 10-blackboard eraser case, 11-bottom roll, 12-driven pulley B, 13-chalk ash collection box, 14-driving wheel B, 15-driven pulley C, 16-round brush, 101-reset control module, 102-central processing module, 103-wireless transmission receiver module, 104-manual control module, 105-motor control module M, 106-motor control module N.
Detailed description of the invention
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
A kind of automatic blackboard as depicted in figs. 1 and 2, comprises cylinder 1, frame 2, blackboard body 6, gripper shoe 7, bottom roll 11 and round brush 16; Frame 2 upper inner are provided with cylinder 1, lower inside is provided with driven pulley B12, the axis of described upper cylinder 1 and bottom roll 11 is parallel with the length direction of frame 2, and the two ends of described upper cylinder 1 and bottom roll 11 are movably installed in respectively the inner side, the left and right sides of frame 2; Described blackboard body 6 for ring-type and be installed on cylinder 1 and bottom roll 11 on, the inner side of described blackboard body 6 is provided with gripper shoe 7, distance between the anterior inner side of described gripper shoe 7 and blackboard body 6 is 0~10mm, and described gripper shoe 7 is placed between cylinder 1 and driven pulley B12, the two ends of described gripper shoe 7 are fixedly connected with the left and right sides of frame 2, described round brush 16 contacts with the rear outside of blackboard body 6, and the two ends of described round brush 16 are movably installed in the inner side, the left and right sides of frame 2.
The top of described frame 2 is also provided with projection cloth cylinder 3, and described projection cloth cylinder 3 is placed in the front of cylinder 1, and the two ends of described projection cloth cylinder 3 are movably installed in respectively the inner side, the left and right sides of frame 2.Blackboard and projection cloth integrated design, solved automatic blackboard and projection cloth and divided the brought inconvenience that is arranged.
The end of described projection cloth cylinder 3 is also provided with driven pulley A4, described driven pulley A4 and driving wheel A5 engaged transmission, and described driving wheel A5 is connected with the output shaft of controlling motor.
The end of described bottom roll 11, round brush 16 is also respectively arranged with driven pulley B12 and driven pulley C15, described driven pulley B12, driven pulley C15 all with driving wheel B14 engaged transmission, described driving wheel B14 with control the output shaft of motor and be connected.Driven by motor magnet board body 6 rotates, and the round brush 16 at the back side with certain speed difference reverse rotation, is realized the function of automatic erasing writing vestige with blackboard body 6.
The left side of described frame 2 or right side are provided with button assembly 8, chalk case 9 and blackboard eraser case 10, and the below of described round brush 16 is provided with chalk ash collection box 13.Button assembly 8 can be realized closely and controlling, and chalk case 9, blackboard eraser case 10 facilitate classroom to pick and place chalk holder remote controller, and 13 of chalk ash collection boxes facilitate later stage cleaning chalk dust.
Described blackboard body 6 is magnetic soft blackboard.Utilize without magnetic soft materials than the rotation that is easier to realize blackboard, but blackboard writing face is all at vertical guide, in writing process, plate face is easily loosening, there is cavitation, be unfavorable for writing, and magnetic soft blackboard has solved this problem, utilize have magnetic soft materials can with inhale magnetic metal inhale, from, close, in the time writing and gripper shoe 7 adsorb.
The control system of a kind of automatic blackboard as shown in Fig. 3~Figure 10, comprise reset control module 101, central processing module 102, wireless transmission receiver module 103, manual control module 104, motor control module M105 and motor control module N106, described reset control module 101 is connected with the reset signal input of central processing module 102, described wireless transmission receiver module 103 is connected with the P2 mouth of central processing module 102, described manual control module 104 is connected with the P1 mouth of central processing module 102, described P1 mouth, P2 mouth is all two-way I/O mouths, the two-way I/O mouth P2 mouth of described central processing module 102 respectively with motor control module M105, the signal input part of motor control module N106 connects.Control system can be controlled the rotation of up-down roller and the rotation of projection cloth cylinder, and control between their up-down roller and projection cloth is separate.
The master chip of described central processing module 102 is STC89C51.
The EA/VPP end of described STC89C51 chip is connected with power supply, and CPU carries out the instruction in internal program memory.
Motor M in described motor control module M105, motor control module N106, the both positive and negative polarity of motor N are respectively through different relay auxiliary contact ground connection, and the link of power supply is arranged within the scope of the actuating length of each relay auxiliary contact; One end of the relay corresponding with described relay auxiliary contact is connected with power supply, and the other end is connected with the colelctor electrode of triode, the grounded emitter of described triode, and base stage is connected with the control signal output of central processing module 102 through a resistance.
Control system in the present invention switches on power after system initialization completes, and system is standby.When pressing blackboard forward (oppositely) rotary knob (or remote control forward (oppositely) rotary knob), central processing unit receives after corresponding instruction, the conducting of motor M control circuit, motor M rotation, magnetic soft blackboard is rotated in the forward; Further round brush will be oppositely with larger rotating speed rotation because of gear ratio difference, has increased and the contact area of plate face the effective cleaning of realization to plate face.When after release button, motor stops action.
In the time pressing projection screen decline button (or RPB), processor receives after corresponding instruction, the action of projection screen control motor N, and projection screen declines, and when arriving release button after correct position, curtain stops action.Otherwise in the time pressing curtain rising button, curtain will synchronously be realized the action of rising.
Governor circuit in the present invention adopts single-chip microcomputer as main control chip, for receiving the signal and the rotating of controlling motor of wireless remote control transmitting, whole mechanical action is mainly by wireless remote control and press button control, wireless remote control major control blackboard auto-erasing and the upper and lower capable of regulating of screen move, and realize electromechanical integration.Teacher uses wireless remote control to carry out remote wipe to writing full blackboard surface in any corner in classroom, is a teacher when closer from blackboard, can also operate accordingly blackboard and screen by the press button of setting on blackboard.The subject matter of considering is that whole mechanical part is in running, need to provide a stable voltage and current to mechanical system, therefore adopted the Switching Power Supply of stable output and mu balanced circuit to provide a constant voltage and electric current to master control system and motor in circuit design part, to arrive a kind of efficient, stable operating state.
The present invention is applicable to various teaching (be particularly suitable for machanical drawing and draw teaching); The blackboard on constituent parts office doorway, can be used for writing notice can leave a message; As the small blackboard of family, be used for practising drawing and writing to child, use cleanly, go wiping without child oneself.

Claims (10)

1. an automatic blackboard, comprise cylinder (1), frame (2), blackboard body (6), gripper shoe (7), bottom roll (11) and round brush (16), it is characterized in that: frame (2) upper inner is provided with cylinder (1), lower inside is provided with driven pulley B (12), the axis of described upper cylinder (1) and bottom roll (11) is parallel with the length direction of frame (2), and the two ends of described upper cylinder (1) and bottom roll (11) are movably installed in respectively the inner side, the left and right sides of frame (2), described blackboard body (6) for ring-type and be installed on cylinder (1) and bottom roll (11) on, the inner side of described blackboard body (6) is provided with gripper shoe (7), distance between the anterior inner side of described gripper shoe (7) and blackboard body (6) is 0~10mm, and described gripper shoe (7) is placed between cylinder (1) and driven pulley B (12), the two ends of described gripper shoe (7) are fixedly connected with the left and right sides of frame (2), described round brush (16) contacts with the rear outside of blackboard body (6), the two ends of described round brush (16) are movably installed in the inner side, the left and right sides of frame (2).
2. automatic blackboard as claimed in claim 1, it is characterized in that: the top of described frame (2) is also provided with projection cloth cylinder (3), described projection cloth cylinder (3) is placed in the front of cylinder (1), and the two ends of described projection cloth cylinder (3) are movably installed in respectively the inner side, the left and right sides of frame (2).
3. automatic blackboard as claimed in claim 1, it is characterized in that: the end of described projection cloth cylinder (3) is also provided with driven pulley A (4), described driven pulley A (4) and driving wheel A (5) engaged transmission, described driving wheel A (5) is connected with the output shaft of controlling motor.
4. automatic blackboard as claimed in claim 1, it is characterized in that: the end of described bottom roll (11), round brush (16) is also respectively arranged with driven pulley B (12) and driven pulley C (15), described driven pulley B (12), driven pulley C (15) all with driving wheel B (14) engaged transmission, described driving wheel B (14) with control the output shaft of motor and be connected.
5. automatic blackboard as claimed in claim 1, it is characterized in that: the left side of described frame (2) or right side are provided with button assembly (8), chalk case (9) and blackboard eraser case (10), and the below of described round brush (16) is provided with chalk ash collection box (13).
6. automatic blackboard as claimed in claim 1, is characterized in that: described blackboard body (6) is magnetic soft blackboard.
7. the control system of an automatic blackboard, it is characterized in that: comprise reset control module (101), central processing module (102), wireless transmission receiver module (103), manual control module (104), motor control module M (105) and motor control module N (106), described reset control module (101) is connected with the reset signal input of central processing module (102), described wireless transmission receiver module (103) is connected with the P2 mouth of central processing module (102), described manual control module (104) is connected with the P1 mouth of central processing module (102), described P1 mouth, P2 mouth is all two-way I/O mouths, the two-way I/O mouth P2 mouth of described central processing module (102) respectively with motor control module M (105), the signal input part of motor control module N (106) connects.
8. the control system of automatic blackboard as claimed in claim 6, is characterized in that: the master chip of described central processing module (102) is STC89C51.
9. the control system of automatic blackboard as claimed in claim 7, is characterized in that: the EA/VPP end of described STC89C51 chip is connected with power supply.
10. the control system of automatic blackboard as claimed in claim 6, it is characterized in that: the motor M in described motor control module M (105), motor control module N (106), the both positive and negative polarity of motor N are respectively through different relay auxiliary contact ground connection, and the link of power supply is arranged within the scope of the actuating length of each relay auxiliary contact; One end of the relay corresponding with described relay auxiliary contact is connected with power supply, the other end is connected with the colelctor electrode of triode, the grounded emitter of described triode, base stage is connected with the control signal output of central processing module (102) through a resistance.
CN201410372904.7A 2014-07-31 2014-07-31 Automatic blackboard and control system thereof Pending CN104139647A (en)

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CN201410372904.7A CN104139647A (en) 2014-07-31 2014-07-31 Automatic blackboard and control system thereof

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Application Number Priority Date Filing Date Title
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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731335A (en) * 1971-07-07 1973-05-08 B Chrisp Automatic chalkboard erasing apparatus
CN2122738U (en) * 1992-06-15 1992-11-25 叶锦兴 Enclosed full-automatic erasing dustless blackboard
CN2368714Y (en) * 1999-03-22 2000-03-15 卫旭宏 Magnetic teaching board and eraser
CN2609770Y (en) * 2003-04-05 2004-04-07 赵少伟 Writing board
CN2711840Y (en) * 2004-06-15 2005-07-20 朱哲林 Wireless remote control and remote measurement three turn over boards advertisement device
CN200998964Y (en) * 2007-01-23 2008-01-02 刘大仁 Flexible blackboard
CN101585283A (en) * 2009-06-18 2009-11-25 华东师范大学 Electric erasing type dustfree soft blackboard
CN201530231U (en) * 2009-11-20 2010-07-21 王思远 Visual identification fully automatic control blackboard erasing device
CN201998666U (en) * 2011-03-08 2011-10-05 赖志刚 Magnetic adsorption environmental protection writing board
CN102343753A (en) * 2011-11-15 2012-02-08 上海理工大学 Full-automatic blackboard eraser with dust sucking device
CN202641144U (en) * 2012-02-18 2013-01-02 刘明靖 Novel dust-free blackboard
CN202685672U (en) * 2012-07-11 2013-01-23 长安大学 Blackboard capable of being automatically erased
CN204020317U (en) * 2014-07-31 2014-12-17 安顺学院 A kind of automatic blackboard

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731335A (en) * 1971-07-07 1973-05-08 B Chrisp Automatic chalkboard erasing apparatus
CN2122738U (en) * 1992-06-15 1992-11-25 叶锦兴 Enclosed full-automatic erasing dustless blackboard
CN2368714Y (en) * 1999-03-22 2000-03-15 卫旭宏 Magnetic teaching board and eraser
CN2609770Y (en) * 2003-04-05 2004-04-07 赵少伟 Writing board
CN2711840Y (en) * 2004-06-15 2005-07-20 朱哲林 Wireless remote control and remote measurement three turn over boards advertisement device
CN200998964Y (en) * 2007-01-23 2008-01-02 刘大仁 Flexible blackboard
CN101585283A (en) * 2009-06-18 2009-11-25 华东师范大学 Electric erasing type dustfree soft blackboard
CN201530231U (en) * 2009-11-20 2010-07-21 王思远 Visual identification fully automatic control blackboard erasing device
CN201998666U (en) * 2011-03-08 2011-10-05 赖志刚 Magnetic adsorption environmental protection writing board
CN102343753A (en) * 2011-11-15 2012-02-08 上海理工大学 Full-automatic blackboard eraser with dust sucking device
CN202641144U (en) * 2012-02-18 2013-01-02 刘明靖 Novel dust-free blackboard
CN202685672U (en) * 2012-07-11 2013-01-23 长安大学 Blackboard capable of being automatically erased
CN204020317U (en) * 2014-07-31 2014-12-17 安顺学院 A kind of automatic blackboard

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Application publication date: 20141112