CN106023720A - Smart pointer for screen marking in projection teaching - Google Patents
Smart pointer for screen marking in projection teaching Download PDFInfo
- Publication number
- CN106023720A CN106023720A CN201610314667.8A CN201610314667A CN106023720A CN 106023720 A CN106023720 A CN 106023720A CN 201610314667 A CN201610314667 A CN 201610314667A CN 106023720 A CN106023720 A CN 106023720A
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- pointer
- teaching
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- screen
- record
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- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000002372 labelling Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 210000003141 lower extremity Anatomy 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 230000003902 lesion Effects 0.000 abstract 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000003660 reticulum Anatomy 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241000699660 Mus musculus Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B17/00—Teaching reading
- G09B17/02—Line indicators or other guides or masks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03542—Light pens for emitting or receiving light
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Position Input By Displaying (AREA)
Abstract
Provided is a smart pointer for screen marking in projection teaching. The invention provides a smart pointer which enables teachers to keep records on a screen in the teaching process under the existing projection screen condition, which is as convenient as writing on a blackboard with a chalk. The smart pointer brings convenience to teachers' teaching. The modules of the existing mouse are integrated into a cylinder similar to a pointer, and a wireless communication function is added. The most important part is that corresponding movement of a cursor can be controlled accurately in the process of sketching on the surface of a projection screen, and the purposes of real-time marking and erasing are achieved using the 'fluorescent pen' and 'eraser' functions in PowerPoint. The embarrassing situation in which teachers are 'bound' to the front of the computer screen in the existing multimedia teaching process is avoided, teachers can give a lesion more flexibly and actively just like writing on a blackboard and can walk among students, and the teaching efficiency is improved.
Description
Technical field
The present invention relates to under the conditions of projection screen in existing multimedia teaching during giving lessons teacher facilitate the intelligent pointer of labelling, it is simple to teacher gives lessons.
Background technology
Under the influence of the multimedia education that the Ministry of Education of China advocates, school at all levels of China is equipped with multimedia teaching tools rapidly, the most most commonly seen computer-projector-curtain equipment beyond doubt, run simple, easily operation, MS Office Applications PowerPoint that acceptance level is high replace before the writing on the blackboard pattern of " blackboard-chalk ", save instructional blocks of time, improve teaching efficiency, achieve the multiformity of transmission information, such as, video, dynamic drawing etc..I found that the teaching model of this " computer-projector-curtain " limits the subjective initiative of teacher often as a student, with my understanding major part teacher and before not liking and being bound in computer screen, and it is desirable to go to the interaction realized in the middle of student with student, enliven classroom atmosphere, and " blackboard-chalk " teaching model teachers are accustomed to scratching on blackboard for many years, due to projection reason they have to return to before computer, this has broken the continuity given lessons, the purpose in fact attended class is not only transmission knowledge, it is more importantly to make classmate adapt to interpersonal exchange and spirit, the succession of humanism feelings between teachers and students in emotion, this incoherent teaching model badly influences this 2 point above.Certainly the teacher also having can look for the hard objects such as some thin bamboos portraying firmly, or directly take chalk labelling on curtain, such result necessarily curtain is scarred, I found that damaged condition in various degree, the serious follow-up use of all impacts all occurs in the curtain in nearly all classroom.In order to solve cannot directly keep a record in curtain during giving lessons this problem, the invention provides the teacher's pointer of a kind of intelligence, make teacher the process of giving lessons as held chalk and scratching on blackboard light, allow instructors free from computer side, go to come in the middle of classmates.
Summary of the invention
It is an object of the invention on existing teaching equipment just goes out, provide a kind of teaching teacher's pointer being easy on projection screen directly labelling, complete work system is constituted by common computer, projector, projection screen, intelligent pointer, solve teacher's pointer technical problem and the technical scheme is that first of all for the motion track on curtain catching intelligent pointer, one trajectory track head of top design in intelligent pointer, its trajectory track head is provided with a light emitting diode, the light sent by this light emitting diode, illuminates the curtain surface at place bottom trajectory track head.Then a part of light curtain surface at place bottom trajectory track head being reflected back, through one group of optical lens, it is transferred to a photo-sensing device (micro-imager) and measured change is converted into the change of optical signal, then convert optical signals into the signal of telecommunication by photoelectric cell further.So, when trajectory track head moves, its motion track will be registered as the coherent image of one group of high-speed capture.Finally utilize the one piece of special image analysis chip (dsp chip being arranged on intelligent pointer body interior, i.e. digital microprocessor) it is analyzed processing to a series of images of picked-up on motion track, by the change of characteristic point position on these images is analyzed, judge moving direction and displacement, thus complete light target location.Then gained positional information by wireless transmitter module and is connected wireless adapter on computers by control chip, " e-Pointer " function provided when making computer obtain information and then utilize PowerPoint to show connects teacher's pointer and project content, it is achieved the purpose of labelling on projection screen.
Wherein optical receiver needs to ensure reflection the injecting of light near vertical, but the angle of teacher's pointer and curtain changes the most at any time.nullIn order to solve this problem，Trajectory track head is designed as mobilizable mechanism，Control and regulation by a closed loop feedback system，Specific design is the power installing four light-inductive device detection external light sources bottom trajectory track head，Gained signal is transferred to the treated analysis of control chip，Generate set signal command，This orders the rotation direction that content is motor comprised，Rotation time，Actuating signal is passed to micromotor，Motor action is parallel with projection screen by controlling basic holding bottom trajectory track head by the chaindriven mode of tooth after one group of bevel gear，In order to improve control、With the soft laminating on projection screen surface bottom the efficiency of trajectory track and trajectory track head，Two circle rubber washers are installed bottom trajectory track head，The most both ensure that curtain was not scratched yet，The collection of light is reflected during improve trajectory track，Improve trajectory track precision.
Often occur entirely projecting or the situation such as skew by curtain due to the reason of resolution during projection, owing to present design, utilizes the e-Pointer function in PowerPoint, this just requires that intelligent pointer is corresponding with the path implementation on computer screen in track moving process, can be only achieved the purpose of precise marking.In order to solve this problem, we use for reference " to cutter " principle that lathe uses, " determine a coordinate system " when processing and setting up Cutter coordinate system at the beginning of part at 3.nullWe arrange a button in teacher's pointer main body，We are its " positioning key "，And programming one contrasts algorithm in control chip，First after projector normally works, teacher's pointer trajectory track head is moved on to position, the view field lower left corner，Press " positioning key "，Control chip controls computer cursor and moves on to the lower left corner of computer screen simultaneously and control the motion track information in track recording level direction only，Then the teacher's pointer trajectory track head lower right corner to view field is moved，Second time is pressed " positioning key " control chip control computer cursor and is moved on to the lower right corner of computer screen，And record the mobile trajectory data of gained，Control the motion track information of the most recordable vertical direction of track simultaneously，Then motion track follows the trail of the head upper right corner to view field，Third time is pressed " positioning key " control chip control computer cursor and is moved on to the upper right corner of computer screen，Record the vertical data of mobile gained，The data obtained is carried out comparing calculation and goes out the corresponding ratio of motion track by control program with computer resolution，Realize intelligent pointer trajectory track head and move the control mode the most corresponding with computer cursor，Intelligent pointer proceeds to mode of operation.
The driving of to be solved is exactly hardware and the compatibling problem with existing equipment, it is contemplated that the computer provided in teaching equipment at present does not has Bluetooth function, and the intelligent pointer of design is divided into two parts, teacher's pointer main body and wireless adapter.Above we have been described above body of work principle class, therefore intelligent pointer only need to run common mouse driver, and its " location contrast program " and the operation of " trajectory track head controls program " and calculating only need to be carried out in the control chip of intelligent pointer.Wherein body power source uses dry cell power supply mode.
For the ease of the operation in movement, devising the soft touch button of the left-right key function of two similar mouses on intelligent pointer limit, be they " function left buttons " and " function right button " respectively, its hardware is all similar with mouse with software-driven.In teaching process, occur that intelligent pointer is removed screen in teaching by teacher frequently, cursor loss situation during record next time occurs, only need to control computer cursor moves on to the computer lower left corner, from the view field lower left corner, intelligent pointer trajectory track head is restarted record and can regain cursor.
The present invention designs features such as having conveniently, easily operated, portable, it is simple to teacher's interactive teaching during giving lessons, and has and well promotes and practical value, potential bigger market, such as, and school, company, museum etc..
Accompanying drawing explanation
Fig. 1 intelligent pointer structure chart
Fig. 2 trajectory track header structure figure
1. aneroid battery in figure, 2. on & off switch, 3. positioning key, 4. function left button, 5. control chip, 6 chain-drive mechanisms, 7. conical gear, 8 micromotors, 9. optical imagery engine of positioning, 10. processor, 11. function right buttons, 12. reset keys, 13. record keys, 14. wireless transmitter modules, 15. bonnets, 16. optical receivers, 17. rubber washers, 18. photoconductive resistance, 19. light emitting diodes, 20. battery of lens, 21. trajectory track head brackets, 22. axles, 23. shells, 24. optical pickocffs.
Detailed description of the invention
nullStart computer and projector，Intelligent pointer installs the aneroid battery (1) in Fig. 1，Close the bonnet (15) in figure 1 above，Bluetooth adapter is inserted into computer USB port，Open " on & off switch (2) " in Fig. 1 intelligent pointer，Computer Automatic Recognition also installs mouse driver，After prompting is installed successfully，" trajectory track head " by teacher's pointer moves on to the lower left corner of view field，Press the lower limb along view field of " positioning key (3) " level of approximation in Fig. 1 for the first time to move on at the lower right corner，Second time presses " positioning key (3) "，The approximately perpendicular upper right corner moving to view field of left hand edge along view field，Third time presses " positioning key (3) " in Fig. 1，The preparation of intelligent pointer is completed through internal arithmetic，At view field's intelligent movable teacher's pointer trajectory track head，Find that cursor moves the most accordingly.Just can enter duty, utilize " function left button (4) " and " function right button (11) " in Fig. 1 can realize the basic function of mouse.Open projection software PowerPoint and choose content to be shown, this step is possible with mouse and completes on computers, click in Fig. 1 " record key (13) " to complete content and be equivalent to mouse-click right button and select " e-Pointer " function, " e-Pointer " function on moves to want marked region, pinning " function left button (4) " in Fig. 1 and drag the labelling that just can occur dragging track on screen, wherein the color of " e-Pointer ", thickness etc. all can complete completely the same with mouse action with " function right button (11) " by " function left button (4) " in Fig. 1." record key (13) " in Fig. 1 is double-clicked when needs erasing mark, complete function and be equivalent to mouse-click right button selection startup " erasing rubber " function, moving on to position to be wiped utilizes " function left button (4) " in Fig. 1 to wipe labelling with the realization that coordinates of " function right button (11) ", and its operation is similar with mouse action." on & off switch (2) " in Fig. 1 only need to throw after completing to use the position closed, and whole operation realizes, and the most not using also needs to unload battery.When exchanging resolution in operation, the resolution after " reset key (12) " in Fig. 1 re-operate positioning step or input adjustment only need to be double-clicked.In teaching process, occur that intelligent pointer is removed screen in teaching by teacher frequently, only need to click " reset key (12) " cursor in Fig. 1 moves on to the computer lower left corner, the lower-left angle point of the view field of record is as zero O, coordinate system trunnion axis crosses lower right corner A point, the longitudinal axis is crossed the transverse axis coordinate that coordinate a little is upper right corner B point and is deducted the transverse axis coordinate of A, ordinate of orthogonal axes retains this point of data of B and is designated as C, it is built such that working face coordinate system, the acquiescence computer screen lower left corner, lower boundary, left margin gained coordinate is physical plane coordinate system, before record, trajectory track head is moved on to working face coordinate origin O, send instruction and set up corresponding relationship by control chip Two coordinate system, just can start working.
Claims (3)
1. curtain labelling intelligent pointer in a projection teaching, it is made up of cylindrical shape teacher's pointer main body and wireless adapter two parts, teacher's pointer main body is integrated with photoelectronic trace tracing module, mechanical action module, wherein to realize trajectory track head vertical with projection screen all the time and catch movement locus exactly for the two module, in conjunction with own " e-Pointer " and " erasing rubber " function of PowerPoint software, and respond track labelling by user requirement.
2. according to intelligent pointer described in right 1, it determines that the method for cursor and trajectory track head is: teacher's pointer " trajectory track head " moves on to the lower left corner of view field, record data, then the lower limb along view field of level of approximation moves on at the lower right corner, record second data point, the approximately perpendicular upper right corner moving to view field of left hand edge along view field, record the 3rd data point, determine that a plane and MARG obtain view field according to 3, the resolution data intrinsic with computer makees ratio, calculate tracking head to move on curtain surface and be marked on the ratio of movement in computer screen with light.
3. according to intelligent pointer described in right 1, it positions light calibration method at any time: using the lower-left angle point of the view field of the record described in 2 as initial point O, coordinate system trunnion axis crosses lower right corner A point, the longitudinal axis is crossed the transverse axis coordinate that coordinate a little is upper right corner B point and is deducted the transverse axis coordinate of A, ordinate of orthogonal axes retains this point of data of B and is designated as C, it is built such that working face coordinate system, the acquiescence computer screen lower left corner, lower boundary, left margin gained coordinate is physical plane coordinate system, before record, trajectory track head is moved on to working face coordinate origin O, send instruction and set up corresponding relationship by control chip Two coordinate system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314667.8A CN106023720A (en) | 2016-05-13 | 2016-05-13 | Smart pointer for screen marking in projection teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314667.8A CN106023720A (en) | 2016-05-13 | 2016-05-13 | Smart pointer for screen marking in projection teaching |
Publications (1)
| Publication Number | Publication Date |
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| CN106023720A true CN106023720A (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610314667.8A Pending CN106023720A (en) | 2016-05-13 | 2016-05-13 | Smart pointer for screen marking in projection teaching |
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| Country | Link |
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| CN (1) | CN106023720A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990906A (en) * | 2017-04-04 | 2017-07-28 | 彭椿皓 | A kind of PPT servicing units delineated |
| CN114860093A (en) * | 2022-05-10 | 2022-08-05 | 东莞市点精科技有限公司 | Projection teaching method and device and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4608601A (en) * | 1982-07-12 | 1986-08-26 | The Moving Picture Company Inc. | Video response testing apparatus |
| CN1581045A (en) * | 2003-08-11 | 2005-02-16 | 张玉红 | Infrared positioning mouse teacher's pointer |
| CN202167158U (en) * | 2011-07-28 | 2012-03-14 | 莫海洋 | Multifunctional teaching indication rod |
| CN202422028U (en) * | 2011-12-28 | 2012-09-05 | 广州市唯昕电子科技有限公司 | Laser writing device |
| CN102968219A (en) * | 2012-01-04 | 2013-03-13 | 北京理工大学 | Interactive computer input equipment on basis of graphic processing |
| CN203659257U (en) * | 2013-12-31 | 2014-06-18 | 廖长春 | Electronic pointer |
| CN105183190A (en) * | 2015-10-25 | 2015-12-23 | 刘书智 | Laser pen with mouse function |
-
2016
- 2016-05-13 CN CN201610314667.8A patent/CN106023720A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4608601A (en) * | 1982-07-12 | 1986-08-26 | The Moving Picture Company Inc. | Video response testing apparatus |
| CN1581045A (en) * | 2003-08-11 | 2005-02-16 | 张玉红 | Infrared positioning mouse teacher's pointer |
| CN202167158U (en) * | 2011-07-28 | 2012-03-14 | 莫海洋 | Multifunctional teaching indication rod |
| CN202422028U (en) * | 2011-12-28 | 2012-09-05 | 广州市唯昕电子科技有限公司 | Laser writing device |
| CN102968219A (en) * | 2012-01-04 | 2013-03-13 | 北京理工大学 | Interactive computer input equipment on basis of graphic processing |
| CN203659257U (en) * | 2013-12-31 | 2014-06-18 | 廖长春 | Electronic pointer |
| CN105183190A (en) * | 2015-10-25 | 2015-12-23 | 刘书智 | Laser pen with mouse function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990906A (en) * | 2017-04-04 | 2017-07-28 | 彭椿皓 | A kind of PPT servicing units delineated |
| CN114860093A (en) * | 2022-05-10 | 2022-08-05 | 东莞市点精科技有限公司 | Projection teaching method and device and computer readable storage medium |
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Application publication date: 20161012 |