CN103529991A - Multi-screen writing pressure-sensitive electronic whiteboard - Google Patents
Multi-screen writing pressure-sensitive electronic whiteboard Download PDFInfo
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- CN103529991A CN103529991A CN201310515565.9A CN201310515565A CN103529991A CN 103529991 A CN103529991 A CN 103529991A CN 201310515565 A CN201310515565 A CN 201310515565A CN 103529991 A CN103529991 A CN 103529991A
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Abstract
The invention provides a multi-screen writing pressure-sensitive electronic whiteboard comprising an electronic whiteboard body and a controller. The electronic whiteboard body comprises a back board, an inner resistive film, an inner layer of resistive film copper strips, an air isolation layer, an outer layer of resistive film copper strips, an outer resistive film and a surface writing film. The controller comprises an A/D conversion unit and a master control unit. The master control unit comprises a data acquisition and processing module. The multi-screen writing pressure-sensitive electronic whiteboard is simple in structure; the controller can respectively measure coordinates of touch spots in four areas of the electronic whiteboard body 1 so as to allow the upper left, lower left, upper right and lower right areas of the electronic whiteboard body to be written at the same time. The problem that the pressure-sensitive electronic whiteboard is unable to be synchronously operated by multiple users is solved.
Description
Technical field
The invention belongs to multi-screen and write pressure inductive electronic whiteboard technology, concrete, the present invention relates to a kind of multi-screen of realizing multi-screen synchronous operation and write pressure inductive electronic whiteboard.
Background technology
Along with the development of electronic technology, various electronic whiteboards have been there are in recent years, as pressure inductive electronic whiteboard, induction electronic whiteboard, infrared-sensing type electronic whiteboard and optical induction type electronic whiteboard.Electronic whiteboard is by different technologies principle, in conjunction with computer and projector, realizes with no paper office.Along with the application of electronic whiteboard is more and more extensive, it uses and operates more and more and is paid close attention to by people.
Pressure inductive electronic whiteboard adopts artifical resistance technology, and working pressure induction input mode is equivalent to a touch-screen of computing machine, serve as a teacher with on finger or style of writing and screen, realize option time, computing machine operation corresponding to processing automatically.There is two-layer pressure sensitivity film this electronic whiteboard inside in fact, and when whiteboard surface is a bit under pressure, two membranes forms short circuit in this, and the controller of electronic whiteboard detects the coordinate figure of pressure spot, through interface, delivers to computing machine.Pressure inductive electronic whiteboard basic structure comprises backboard, internal layer resistive film, air barrier, outer resistive film and the surperficial writing film arranging from inside to outside.
The principle of work of pressure inductive electronic whiteboard is as described below: the workplace that every one deck resistive film is touch-screen, it is X workplace that internal layer resistive film is set respectively, outer resistive film is Y workplace, (X workplace is transverse ends at the two ends of each workplace, Y workplace is longitudinal two ends) respectively post a conductive copper bar, be known as the pair of electrodes of this face, being called " X electrode pair " is X+, X-, and " Y electrode pair " is Y+, Y-.When the voltage at " X electrode pair " upper increase DC5V by controller, and " Y electrode pair " be not during making alive, when touching surperficial writing film with finger, the voltage at place, contact has reflected the position of contact on X workplace, and this voltage is guided to controller by Y+ or Y-electrode, and through A/D, conversion just can obtain the digital value of contact voltage, it is the coordinate of X, in like manner, at " Y electrode pair " upper making alive, the coordinate that the coordinate figure that X+ or X-obtain of take is Y.From the above, when touching whiteboard surface writing film with finger or white board marker, internal layer resistive film and outer resistive film link together in touch place, obtain the coordinate figure of X and Y, deliver to the relevant treatment that system computer carries out mouse action or picture.
But, current pressure inductive electronic whiteboard only limits to single or two users' uses conventionally, for many people's operations, especially many people synchronous operation cannot provide good technical support, when key issue is single touch-surface writing film, different according to the position of two-layer resistive film contact, the unique magnitude of voltage obtaining is determined place coordinate figure, when many places touch, be equivalent to a plurality of resistance parallel connections and be finally still the single magnitude of voltage volume that obtains, rather than a plurality of different magnitudes of voltage, so cannot distinguish the coordinate figure of a plurality of touch places, cannot synchronous acquisition multiple spot touches simultaneously on the writing film of surface coordinate figure.
Summary of the invention
The present invention for solve that the existing pressure inductive electronic whiteboard mentioned in above-mentioned background technology exists cannot many people synchronous operation problem, provide a kind of multi-screen of realizing multi-screen synchronous operation to write pressure inductive electronic whiteboard, described pressure inductive blank can synchronous acquisition the coordinate figures of four screen point midways, thereby realize many people synchronous operation.
Concrete, the invention provides a kind of multi-screen and write pressure inductive electronic whiteboard, described multi-screen is write pressure inductive electronic whiteboard and is comprised electronic whiteboard body and controller, described electronic whiteboard body comprises backboard, internal layer resistive film, internal layer resistive film copper bar, air barrier, outer resistive film copper bar, outer resistive film and surperficial writing film.
Described controller comprises A/D converting unit and main control unit, described main control unit comprises data acquisition and processing module, described A/D converting unit and main control unit carry out data connection by described data acquisition and processing module each other, described A/D converting unit is connected with described electronic whiteboard body, and described A/D converting unit is for being converted into simulating signal digital signal and signal is passed to described data acquisition and processing module; Described main control unit is used for carrying out logic control.
Preferably, described internal layer resistive film and described outer resistive film be set to respectively two can independent operation homogeneous area.
Preferably, draw respectively wire for 8 in described internal layer resistive film copper bar, make described internal layer resistive film form 8 line screen constructions, draw respectively wire for 8 in described outer resistive film copper bar, make described outer resistive film form 8 line screen constructions.
Preferably, described electronic whiteboard body is connected to described A/D modular converter, and described A/D modular converter is converted into analog information numerical information and passes to described data acquisition and processing module; Described data acquisition and processing module are calculated the coordinate figure of operator touch place by calculating.
Preferably, described electronic whiteboard body is separated into 4 regions uniformly.
Preferably, described controller can be measured respectively the coordinate figure of the touch place in 4 regions of described electronic whiteboard body, thereby realizes the object that write simultaneously in upper left, lower-left, upper right and the Si Ge region, bottom right of electronic whiteboard.
The principle that described controller obtains the coordinate figure that operator touches out is as follows: when operator press blank plate body a-quadrant a bit after, internal layer resistive film contacts with outer resistive film and forms short dot, described main control unit applies positive voltage by YP1 direction, YN1 ground connection.XN1 is unsettled, measures XP1 voltage-to-ground, and through converting, obtains touch point, A district Y coordinate figure according to its measured value and the ratio that applies magnitude of voltage.In like manner XP1 applies positive voltage, XN1 ground connection, and YN1 is unsettled, measures YP1 voltage and can converse touch point, A district X coordinate figure.
Same method can measure respectively tetra-region short dot coordinate figures of electronic whiteboard body ABCD.The object that write simultaneously in realization detection upper left, lower-left, upper right, Si Ge region, bottom right.
The present invention is simple in structure, and described controller can be measured respectively the coordinate figure of the touch place in 4 regions of described electronic whiteboard body, thereby realizes the object that write simultaneously in upper left, lower-left, upper right and the Si Ge region, bottom right of electronic whiteboard.Solve the difficult point that pressure inductive electronic whiteboard cannot many people synchronous operation, for the interaction of teaching process Ability of Normal School Students brings effect more intuitively, promoted the progress of electronic whiteboard technical industry simultaneously, there is great science and technology and commercial value.
Accompanying drawing explanation
Fig. 1 is each several part structural representation of the present invention;
Fig. 2 is that schematic diagram is divided in the region of electronic whiteboard body of the present invention;
Fig. 3 is the connection diagram between electronic whiteboard body of the present invention and controller.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further explained:
As shown in Figure 1, a kind of multi-screen is write pressure inductive electronic whiteboard, comprise electronic whiteboard body 1 and controller, electronic whiteboard body 1 comprises backboard 10, internal layer resistive film 11, internal layer resistive film copper bar 12, air barrier 13, outer resistive film copper bar 14, outer resistive film 15 and surperficial writing film 16.
Controller comprises A/D converting unit 2 and main control unit 3, main control unit 3 comprises data acquisition and processing module 30, A/D converting unit 2 and main control unit 3 carry out data connection by institute's data acquisition and processing module 30 each other, A/D converting unit 2 is connected with electronic whiteboard body 1, and A/D converting unit 2 is for being converted into simulating signal digital signal and signal being passed to data acquisition and processing module 30; Main control unit 3 is for carrying out logic control.
Internal layer resistive film 11 and outer resistive film 15 be set to respectively two can independent operation homogeneous area.Draw respectively wire for 8 in internal layer resistive film copper bar 12, make internal layer resistive film 11 form 8 line screen constructions, draw respectively wire for 8 in outer resistive film copper bar 14, make outer resistive film 15 form 8 line screen constructions.
As shown in Figure 3, electronic whiteboard body 1 is connected to A/D modular converter 2, and A/D modular converter 2 is converted into numerical information by analog information and passes to data acquisition and processing module 30; Data acquisition and processing module 30 are calculated the coordinate figure of operator touch place by calculating.
Electronic whiteboard body 1 is separated into 4 regions uniformly.Controller can be measured respectively the coordinate figure of touch place in 4 regions of electronic whiteboard body 1, thereby realizes the object that write simultaneously in upper left, lower-left, upper right and the Si Ge region, bottom right of electronic whiteboard.
As shown in Figure 2, the principle that controller obtains the coordinate figure that operator touches out is as follows: when a-quadrant that operator presses electronic whiteboard body 1 a bit after, internal layer resistive film 11 contacts with outer resistive film 15 and forms short dot, and main control unit 3 applies positive voltage by YP1 direction, YN1 ground connection.XN1 is unsettled, measures XP1 voltage-to-ground, and through converting, obtains touch point, A district Y coordinate figure according to its measured value and the ratio that applies magnitude of voltage.In like manner XP1 applies positive voltage, XN1 ground connection, and YN1 is unsettled, measures YP1 voltage and can converse touch point, A district X coordinate figure.
Same method can measure respectively tetra-region short dot coordinate figures of ABCD of electronic whiteboard body 1.The object that write simultaneously in realization detection upper left, lower-left, upper right, Si Ge region, bottom right.
The present invention is simple in structure, and controller can be measured respectively the coordinate figure of touch place in 4 regions of described electronic whiteboard body 1, thereby realizes the object that write simultaneously in upper left, lower-left, upper right and the Si Ge region, bottom right of electronic whiteboard.Solve the difficult point that pressure inductive electronic whiteboard cannot many people synchronous operation, for the interaction of teaching process Ability of Normal School Students brings effect more intuitively, promoted the progress of electronic whiteboard technical industry simultaneously, there is great science and technology and commercial value.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a multi-screen is write pressure inductive electronic whiteboard, it is characterized in that: it comprises electronic whiteboard body and controller, described electronic whiteboard body comprises backboard, internal layer resistive film, internal layer resistive film copper bar, air barrier, outer resistive film copper bar, outer resistive film and surperficial writing film;
Described controller comprises A/D converting unit and main control unit, described main control unit comprises data acquisition and processing module, described A/D converting unit and main control unit each other logical described data acquisition and the processing module of suffering carry out data connection, described A/D converting unit is connected with described electronic whiteboard body, and described A/D converting unit is for being converted into simulating signal digital signal and signal is passed to described data acquisition and processing module; Described main control unit is used for carrying out logic control.
2. a kind of multi-screen according to claim 1 is write pressure inductive electronic whiteboard, it is characterized in that: described internal layer resistive film and described outer resistive film be set to respectively two can independent operation homogeneous area.
3. a kind of multi-screen according to claim 1 is write pressure inductive electronic whiteboard, it is characterized in that: draw respectively wire for 8 in described internal layer resistive film copper bar, make described internal layer resistive film form 8 line screen constructions, draw respectively wire for 8 in described outer resistive film copper bar, make described outer resistive film form 8 line screen constructions.
4. a kind of multi-screen according to claim 2 is write pressure inductive electronic whiteboard, it is characterized in that: described electronic whiteboard body is connected to described A/D modular converter, described A/D modular converter is converted into analog information numerical information and passes to described data acquisition and processing module; Described data acquisition and processing module are calculated the coordinate figure of operator touch place by calculating.
5. a kind of multi-screen according to claim 4 is write pressure inductive electronic whiteboard, it is characterized in that: described electronic whiteboard body is separated into 4 regions uniformly.
6. a kind of multi-screen according to claim 5 is write pressure inductive electronic whiteboard, it is characterized in that: described controller can be measured respectively the coordinate figure of the touch place in 4 regions of described electronic whiteboard body, thereby realize the object that write simultaneously in upper left, lower-left, upper right and the Si Ge region, bottom right of electronic whiteboard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310515565.9A CN103529991A (en) | 2013-10-25 | 2013-10-25 | Multi-screen writing pressure-sensitive electronic whiteboard |
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| CN201310515565.9A CN103529991A (en) | 2013-10-25 | 2013-10-25 | Multi-screen writing pressure-sensitive electronic whiteboard |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339135A (en) * | 2016-08-30 | 2017-01-18 | 科盟（福州）电子科技有限公司 | Infrared electronic whiteboard A/B screen splitting method capable of supporting independent operation by multiple persons |
| CN107066163A (en) * | 2016-12-29 | 2017-08-18 | 上海清之泓教育科技有限公司 | Resistance membrane type electronic whiteboard |
| CN108053350A (en) * | 2018-01-20 | 2018-05-18 | 山东金视野教育科技股份有限公司 | A kind of multimedia educational system and method based on internet |
| CN109101121A (en) * | 2018-07-05 | 2018-12-28 | 深圳市上融科技有限公司 | A kind of electromagnetic electronic white board coordinate transformation method, device and readable medium |
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| CN201681368U (en) * | 2010-04-30 | 2010-12-22 | 毛肖林 | Multi-wire resistive touch screen of film-to-glass structure |
| WO2010147045A1 (en) * | 2009-06-19 | 2010-12-23 | 日本写真印刷株式会社 | Resistive film touch panel having a pressure-detecting function |
| CN202003338U (en) * | 2011-04-26 | 2011-10-05 | 福州锐达数码科技有限公司 | Double-screen pressure sensitive electronic whiteboard |
| CN103019437A (en) * | 2012-10-29 | 2013-04-03 | 苏州大学 | Touch type electronic whiteboard |
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2013
- 2013-10-25 CN CN201310515565.9A patent/CN103529991A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010147045A1 (en) * | 2009-06-19 | 2010-12-23 | 日本写真印刷株式会社 | Resistive film touch panel having a pressure-detecting function |
| CN201681368U (en) * | 2010-04-30 | 2010-12-22 | 毛肖林 | Multi-wire resistive touch screen of film-to-glass structure |
| CN202003338U (en) * | 2011-04-26 | 2011-10-05 | 福州锐达数码科技有限公司 | Double-screen pressure sensitive electronic whiteboard |
| CN103019437A (en) * | 2012-10-29 | 2013-04-03 | 苏州大学 | Touch type electronic whiteboard |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339135A (en) * | 2016-08-30 | 2017-01-18 | 科盟（福州）电子科技有限公司 | Infrared electronic whiteboard A/B screen splitting method capable of supporting independent operation by multiple persons |
| CN107066163A (en) * | 2016-12-29 | 2017-08-18 | 上海清之泓教育科技有限公司 | Resistance membrane type electronic whiteboard |
| CN108053350A (en) * | 2018-01-20 | 2018-05-18 | 山东金视野教育科技股份有限公司 | A kind of multimedia educational system and method based on internet |
| CN108053350B (en) * | 2018-01-20 | 2021-11-30 | 山东金视野教育科技股份有限公司 | Multimedia education system and method based on Internet |
| CN109101121A (en) * | 2018-07-05 | 2018-12-28 | 深圳市上融科技有限公司 | A kind of electromagnetic electronic white board coordinate transformation method, device and readable medium |
| CN109101121B (en) * | 2018-07-05 | 2021-07-27 | 深圳市上融科技有限公司 | Electromagnetic electronic whiteboard coordinate conversion method and device and readable medium |
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