CN103689912A - Movable multimedia teaching table - Google Patents
Movable multimedia teaching table Download PDFInfo
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- CN103689912A CN103689912A CN201410002449.1A CN201410002449A CN103689912A CN 103689912 A CN103689912 A CN 103689912A CN 201410002449 A CN201410002449 A CN 201410002449A CN 103689912 A CN103689912 A CN 103689912A
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Abstract
The invention relates to a movable multimedia teaching table, and belongs to the field of single chip microcomputer and sensor combined application technologies. The movable multimedia teaching table is characterized by comprising a table, a control module, a driving module, an automatic obstacle avoidance module, a target detection module and a power module; the table comprises a tablet computer accommodating platform, a protective cover, a wireless mouse and keyboard accommodating drawer plate, a multimedia interface, a drawer, a cabinet, hooks, a Mecanum wheel set and the like, the protective cover is connected with a tabletop by hinges, the tablet computer accommodating platform is arranged below the protective cover, the wireless mouse and keyboard accommodating drawer plate, the drawer and the cabinet are arranged in the front of the table, the multimedia interface and the hooks are arranged on the left side of the table, and the Mecanum wheel set is arranged at the bottom of the table; an output port of the control module is connected with direct-current gear motors by the driving module, the automatic obstacle avoidance module and the target detection module are connected with various data ports of the control module, and the power module is connected with the control module. The movable multimedia teaching table has the advantage that the movable multimedia teaching table can be applied to places such as multimedia classrooms, conference rooms and auditoria.
Description
Technical field
The present invention relates to a kind of Mobile multimedia lectern, belong to the single-chip microcomputer applied technical field that combines with sensor.
Background technology
Along with the development of multimedia technology, multimedia teaching enters classroom gradually, to classroom instruction, brings great convenience, and has improved the efficiency of classroom instruction.But consider that existing multimedia lectern volume is large, circuit is loaded down with trivial details, irremovable, in a way teacher's scope of activities is limited between blackboard and lectern, has reduced the interaction between teachers and students, causes Students ' Learning inefficiency.And existing Mobile multimedia lectern needs Manual-pushing, and only can on level land, move among a small circle, inconvenient teacher uses.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned existence, provide a kind of Mobile multimedia lectern, scope of activities is restricted when solving teachers, can not carry out well the problems such as interaction with student; This Mobile multimedia lectern volume is little, and motion flexibly, can automatically be followed teacher and move, and can be widely used in the places such as each University Multimedia Classroom, meeting room and auditorium.
Technical problem to be solved by this invention realizes by the following technical solutions.
A Mobile multimedia lectern, further design is, described Mobile multimedia lectern is comprised of table body, control module, driver module, automatic obstacle-avoiding module, module of target detection and power module.Described table body mainly comprises panel computer mounting table, over cap, wireless mouse keyboard is placed pumping board, multimedia interface, drawer, cupboard, hook and Mecanum wheels etc., over cap is connected by loose-leaf with desktop, over cap below is panel computer mounting table, the front side wired/wireless mouse keyboard of table body is placed pumping board, the below that wireless mouse keyboard is placed pumping board is respectively drawer and cupboard, there are multimedia interface and hook in the left side of table body, Mecanum wheel is assembled on the pin of a body, automatic obstacle-avoiding module and module of target detection are contained in the surrounding of a body, control module, driver module and power module are contained in the bottom of a body.Wherein, the output port of described control module is connected with DC speed-reducing by driver module, and described automatic obstacle-avoiding module, module of target detection are connected with each FPDP of control module respectively, and described power module is connected with control module.
Described Mobile multimedia lectern, further design is, described control module is pcDuino, stable performance, programming is simple, and it is convenient to control.
Described Mobile multimedia lectern, further design is, described driver module, for driving chip L298N, can drive 4 direct current generators simultaneously, realizes the control of rotating and motor speed.
Described Mobile multimedia lectern, further design is, and described automatic obstacle-avoiding module is ultrasonic sensor, and its stable performance is accurately high.
Described Mobile multimedia lectern, further design is, and described module of target detection adopts infrared signal transmitting tube and receiving tube, and sphere of action is far away, strong interference immunity.
Described Mobile multimedia lectern, further design is, and the wheel adopting is Mecanum wheel, and motion is flexibly.
Beneficial effect of the present invention is.
On the basis of existing multimedia lectern, add the Mecanum wheels flexibly that move, the combining wireless communication technology, sensor technology and electronic control technology, can make multimedia lectern follow teacher and move, and realizes the function of automatically following with automatic obstacle-avoiding.Volume of the present invention is little, and motion flexibly, can automatically be followed teacher and move, and facilitates teacher to operate, and can be widely used in the places such as each University Multimedia Classroom, meeting room and auditorium.
Accompanying drawing explanation
Fig. 1 is the structural representation of table body of the present invention.
Fig. 2 is the structural representation of table body of the present invention bottom.
Fig. 3 is the structural representation of control system of the present invention.
Fig. 4 is the main program flow chart of control system of the present invention.
Fig. 5 is the connection diagram of driving chip L298N of the present invention.
Fig. 6 is the ultrasonic sensor range measurement principle figure of automatic obstacle-avoiding module of the present invention.
Fig. 7 is the receiving angle figure of the infrared signal receiving tube of module of target detection of the present invention.
Fig. 8 is the scheme of installation of the infrared signal receiving tube of module of target detection of the present invention.
Fig. 9 is the motion mode of the Mecanum wheel that adopts of the present invention.
Wherein, 1-panel computer mounting table, 2-over cap, 3-module of target detection, 4-multimedia interface, 5-wireless mouse keyboard are placed pumping board, 6-automatic obstacle-avoiding module, 7-drawer, 8-hook, 9-cupboard, 10-Mecanum wheels, 11-table body, 12-driver module, 13-power module, 14-control module, 15-DC speed-reducing.
The specific embodiment
Below in conjunction with Figure of description and specific embodiment, the present invention is further described.
As shown in Figure 1, table body (11) mainly comprises panel computer mounting table (1), over cap (2), wireless mouse keyboard is placed pumping board (5), multimedia interface (4), drawer (7), cupboard (9), hook (8) and Mecanum wheels (10) etc., panel computer is placed on panel computer mounting table (1), and between projecting apparatus, adopt radio communication, over cap (2) is for the protection of panel computer, wireless mouse keyboard is placed on wireless mouse keyboard and places on pumping board (5), multimedia interface (4) is for expanding other equipment, be user-friendly to, drawer (7), cupboard (9) can be used for placing object, hook (8) can be used to put bag, clothes etc., Mecanum wheels (10) are for the movement of multimedia lectern.
As shown in Figure 2 and Figure 3, the control system of this Mobile multimedia lectern be arranged on multimedia lectern on for the DC speed-reducing driving, be connected.This system comprises control module (14), driver module (12), automatic obstacle-avoiding module (6), module of target detection (3) and power module (13).The output port of control module (14) is connected with the DC speed-reducing (15) of multimedia lectern by driver module (12), automatic obstacle-avoiding module (6), module of target detection (3) are connected with each FPDP of control module (14) respectively, and power module (13) is connected with control module (14).Control module (14) is pcDuino, and driver module (12) is L298N, and automatic obstacle-avoiding module (6) is ultrasonic sensor, and module of target detection (3) is infrared signal transmitting tube and receiving tube.
As shown in Figure 4, control module adopts pcDuino to control.While serving as a teacher the Infrared Projector of opening on laser pen, be arranged on the infrared receiving tube array received infrared signal of multimedia lectern surrounding, control module is processed the data from infrared receiving tube, after the relative size of the infrared signal that relatively infrared receiving tube receives, control multimedia lectern to the strongest orientation motion of infrared signal.In motion process, the ultrasonic sensor of multimedia lectern surrounding is launched ping towards periphery, control module is according to the reflected acoustic pulse signal receiving, calculate the distance of multimedia lectern and barrier, if distance is greater than the safe distance of multimedia lectern, multimedia lectern continues to move along former direction, otherwise controls the direction of motion of multimedia lectern, allows it turn to the direction that infrared signal is stronger.
Driver module has four DC speed-reducing before and after controlling multimedia lectern, independently realizes the driving of each DC speed-reducing by driving chip L298N, controls forward, reversion, stall and the adjusting rotary speed of motor.As shown in Figure 5.Input port incoming control signal, output port connects the two ends of motor.When input 1 is " 1,0 " and " 0,1 " with input 2 access signals, corresponding motor rotates and reverse respectively; When the signal of two input pin accesses is " 1,1 " and " 0,0 ", corresponding motor stalling.When enable pin is high level, respective input mouth signal is effective; Otherwise input signal is invalid.At Enable Pin access square-wave signal, by adjusting the dutycycle of square-wave signal, the control of realization to motor speed, by coordinating the motion mode of four Mecanum wheels of multimedia lectern, realizes the function of turn-taking in forward-reverse, transverse movement, oblique movement and the original place of multimedia lectern.
As shown in Figure 6, automatic obstacle-avoiding module adopts ultrasonic sensor to realize and keeps away barrier, and its principle is to calculate the distance of multimedia lectern and barrier, and the method for ultrasonic ranging is ES Echo sounding.In the motion process of multimedia lectern, ultrasonic sensor is launched ping towards periphery, control module is according to the reflected acoustic pulse signal receiving, calculate the distance of multimedia lectern and barrier, if distance is greater than the safe distance of multimedia lectern, multimedia lectern continues to move along former direction, otherwise controls the direction of motion of multimedia lectern, allow it turn to the direction that infrared signal is stronger, thereby realize the function of avoiding barrier.
As shown in Figure 7, Figure 8, module of target detection adopts infrared signal transmitting tube and receiving tube.While serving as a teacher the infrared signal emission switch of opening on laser pen, the infrared receiving tube array received infrared signal of multimedia lectern surrounding, control module is processed the data from infrared receiving tube, by the relative size of the infrared signal that relatively infrared receiving tube receives, control multimedia lectern to the strongest orientation motion of infrared signal, thereby realize the function that multimedia lectern is followed teacher.
As shown in Figure 9, the wheel of multimedia lectern is selected Mecanum wheel.The all-around mobile mode of Mecanum wheel is based on a principle that has the centre wheel of many wheel shafts that are positioned at wheel periphery.These angled periphery wheel shafts are transformed into a part of wheel steering force above a wheel method phase power.Rely on direction and the speed of wheel separately, thereby finally synthesizing of these power produces a resultant force vector and guaranteed that this platform can freely move in the direction of final resultant force vector in the direction of any requirement, and do not change the direction of wheel self.Many small sticks that diagonally distributing on its wheel rim, therefore wheel can horizontal sliding.The bus of small roller is very special, and when wheel rotates around fixing wheel arbor, the envelope of each small roller is the face of cylinder, so this is taken turns, can roll forward continuously.Mecanum wheel compact conformation, motion flexibly, is very successful a kind of directional wheel.Have 4 this novel wheels to combine, can be more flexible realize all-around mobile function.
Claims (5)
1. a Mobile multimedia lectern, is characterized in that: described Mobile multimedia lectern is by table body (11), control module (14), driver module (12), automatic obstacle-avoiding module (6), module of target detection (3) and power module (13) form, and described table body (11) mainly comprises panel computer mounting table (1), over cap (2), wireless mouse keyboard is placed pumping board (5), multimedia interface (4), drawer (7), cupboard (9), hook (8) and Mecanum wheels (10) etc., over cap (2) is connected by loose-leaf with desktop, and over cap (2) below is panel computer mounting table (1), and the front side wired/wireless mouse keyboard of table body is placed pumping board (5), drawer (7) and cupboard (9), there are multimedia interface (4) and hook (8) in the left side of table body, Mecanum wheels (10) are equipped with in bottom, the output port of described control module (14) is connected with DC speed-reducing (15) by driver module (12), described automatic obstacle-avoiding module (6), module of target detection (3) is connected with each FPDP of control module (14) respectively, and described power module (13) is connected with control module (14).
2. Mobile multimedia lectern according to claim 1, is characterized in that: described control module is pcDuino.
3. Mobile multimedia lectern according to claim 1, is characterized in that: described driver module is for driving chip L298N.
4. Mobile multimedia lectern according to claim 1, is characterized in that: described automatic obstacle-avoiding module is ultrasonic sensor.
5. Mobile multimedia lectern according to claim 1, is characterized in that: described module of target detection adopts infrared signal transmitting tube and receiving tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002449.1A CN103689912A (en) | 2014-01-03 | 2014-01-03 | Movable multimedia teaching table |
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| CN201410002449.1A CN103689912A (en) | 2014-01-03 | 2014-01-03 | Movable multimedia teaching table |
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| CN201410002449.1A Pending CN103689912A (en) | 2014-01-03 | 2014-01-03 | Movable multimedia teaching table |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104382349A (en) * | 2014-11-10 | 2015-03-04 | 成都佳美嘉科技有限公司 | Computer accessory bracket |
| CN105433602A (en) * | 2016-01-25 | 2016-03-30 | 张艳艳 | Medical table capable of automatically moving |
| CN106723984A (en) * | 2016-11-25 | 2017-05-31 | 合肥海亚信息科技有限公司 | A kind of multi-media classroom operating desk |
| CN106724163A (en) * | 2017-02-09 | 2017-05-31 | 苏州亮磊知识产权运营有限公司 | A kind of pattern of double controlling intelligent mobile cabinet for TV |
| CN107097187A (en) * | 2017-05-02 | 2017-08-29 | 文博创造展览展示（天津）有限公司 | A kind of intelligent historical relic repairs desktop system |
| CN107358820A (en) * | 2017-09-08 | 2017-11-17 | 肇庆高新区恒泰信息服务有限公司 | A kind of computer based multimedia teaching instrument |
| CN108078330A (en) * | 2017-12-14 | 2018-05-29 | 无锡职业技术学院 | A kind of solar energy shoe rack of following spot on the sunny side of drying device |
| CN110220089A (en) * | 2019-07-08 | 2019-09-10 | 沙洲职业工学院 | A kind of moveable smart television table of avoidance |
| CN113331577A (en) * | 2021-04-21 | 2021-09-03 | 上海锡鼎智能科技有限公司 | Intelligent movement podium |
| CN113570915A (en) * | 2021-07-08 | 2021-10-29 | 云南国土资源职业学院 | Think removal explanation device of political affairs classroom teaching usefulness |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105433602A (en) * | 2016-01-25 | 2016-03-30 | 张艳艳 | Medical table capable of automatically moving |
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| CN106724163A (en) * | 2017-02-09 | 2017-05-31 | 苏州亮磊知识产权运营有限公司 | A kind of pattern of double controlling intelligent mobile cabinet for TV |
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| CN107358820A (en) * | 2017-09-08 | 2017-11-17 | 肇庆高新区恒泰信息服务有限公司 | A kind of computer based multimedia teaching instrument |
| CN108078330A (en) * | 2017-12-14 | 2018-05-29 | 无锡职业技术学院 | A kind of solar energy shoe rack of following spot on the sunny side of drying device |
| CN110220089A (en) * | 2019-07-08 | 2019-09-10 | 沙洲职业工学院 | A kind of moveable smart television table of avoidance |
| CN113331577A (en) * | 2021-04-21 | 2021-09-03 | 上海锡鼎智能科技有限公司 | Intelligent movement podium |
| CN113570915A (en) * | 2021-07-08 | 2021-10-29 | 云南国土资源职业学院 | Think removal explanation device of political affairs classroom teaching usefulness |
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Application publication date: 20140402 |