CN103543594A - Soft projection curtain device and soft electronic whiteboard system comprising same - Google Patents
Soft projection curtain device and soft electronic whiteboard system comprising same Download PDFInfo
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- CN103543594A CN103543594A CN201310474187.4A CN201310474187A CN103543594A CN 103543594 A CN103543594 A CN 103543594A CN 201310474187 A CN201310474187 A CN 201310474187A CN 103543594 A CN103543594 A CN 103543594A
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Abstract
The invention provides a soft projection curtain device comprising a soft curtain and a base plate. The soft curtain is arranged at the front end of the base plate, a fixed rod is arranged at one end of the soft curtain, and a reel rolling the soft curtain is arranged at the other end of the soft curtain; two ends of the fixed rod are respectively fixedly arranged on two sides of the base plate; a driving motor is arranged at one end of the reel, and a slider device which does not rotate relative to the driving motor is arranged at each of two ends of the reel. Meanwhile, the invention provides a soft electronic whiteboard system comprising the soft protection curtain device. On the premise of not modifying any existing equipment, an electronic whiteboard is used, great resource waste is not caused, and great money, labor and material resources are saved on the premise of realizing same effect.
Description
Technical field
The present invention relates to a kind of electric whiteboard system and projection arrangement thereof, the projecting soft screen apparatus that relates in particular to a kind of soft electric whiteboard system and comprise, belongs to electronic whiteboard technical field.
Background technology
So-called soft electronic whiteboard, the function that function that exactly can reflective projection image content by soft curtain and rigid sheet material (as blank that for school, the green plate of steel, steel blackboard, available free ink pen are write etc., being below referred to as substrate) can facilitate photoelectric pen to write organically combines formation and had not only facilitated projection, but also the electric whiteboard system that facilitates photoelectric pen to write.When using, only soft curtain need be launched by the magnetic material at the curtain back side and the iron material absorption principle of substrate, curtain to be adsorbed on substrate, projected picture is incident upon on curtain, uses the electronic whiteboard photoelectric pen of optical imaging concept on curtain projected picture, can mark and write.Like this, both overcome curtain and can do projection reflected picture but because it is too soft, cannot make photoelectric pen touch be inconvenient to the feature of using photoelectric pen to write, and overcome again substrate and facilitated photoelectric pen to write but because its reflectivity is inadequate or the reflection gain too low feature that can not do projected picture.On curtain in soft electric whiteboard system, scribble diffuse-reflective material, can reflective projection picture, facilitate again photoelectric pen write and be difficult for being worn.
At present, the soft electronic whiteboard in interactive electronic white board field has following four kinds of implementation methods, but all undesirable, all has fatal shortcoming, does not all reach the stage of practical application all the time.
The one, the manual mode of directly putting up: utilize magnetic absorption principle to be adsorbed on substrate by craft the be magnetic dumb light reflective membrane of material of the back side band that is applicable to projected picture area, then computer picture is projected on this reflective membrane, with photoelectric pen, on this reflective membrane, marks in real time or write; After use finishes, then deposit by by hand dumb light reflective membrane being taken off to pack up from substrate.This kind of implementation, cost is low, only needs the dumb light reflective membrane of projected area size, but, operation is trouble very, dumb light reflective membrane than be easier to craft adsorb or the process opened in because unbalance stress is impaired, or folding fine wrinkle, bulge or the slight crack of occurring; Be not easy to keep smooth, repeatedly with hand or rag, curtain could be adsorbed smooth; The phenomenon that simultaneously also exists absorption to tilt.
The 2nd, manual curtain mode: dumb light reflective membrane is pasted on market on existing manual curtain by viscose, again curtain reverse of the cloth is coated to magnetic material, when using, the pull bar of manual curtain is past drop-down on one side, for preventing that curtain is just drop-down, be just attracted on substrate, so
alsowant toward the direction away from substrate, to pull outward on one side, while moving appropriate location to, again lentamente, evenly by curtain toward close on substrate, now curtain can be adsorbed on substrate, and then with hand or rag, curtain is floating, keep absorption smooth, then just can on the projected picture of dumb light reflective membrane, write or mark with photoelectric pen; After use finishes, because magnetic absorption force principal, the elasticity cyclotron mechanism of curtain is unable by curtain rollback curtain storehouse, so just first the pull bar of curtain is pulled outward with hand, by after being adsorbed on curtain on substrate and all opening from top to bottom, then elasticity cyclotron mechanism could be automatically involute toward curtain storehouse by curtain.This kind of mode, operates very complicated.
The 3rd, electric curtain mode: use electric curtain on the basis of the second way, but when curtain is transferred automatically, because magnetic principle, curtain can be adsorbed onboard, curtain just can not be transferred smoothly, also needs artificial auxiliary pulling outward; While needing to involve in curtain after use finishes, also need manually first curtain and substrate to be opened completely, draw on could be electronic, although increase electronicly, effect not quite.According to people, use the habitual way of electric curtain, curtain on meeting direct control curtain control enclosure rises or button falls in curtain, when curtain is transferred, because the rigidity absorption principle of curtain back side magnetic and substrate, curtain is just adsorbed in the beginning of transferring, and transfers at all and cannot carry out; Equally, when curtain is not yet complete and hard plate material opens, direct control curtain rises the words of key, because the acting force of absorption is very large, cause motor curtain cannot be involved in curtain storehouse, can cause motor continuous firing heating, burn, the security incidents such as motor is on fire more seriously can occur.
The 4th, two-dimentional electronic control mode: increase Yi Ge electric translation mechanism on the basis of the third mode, specifically: the stiff end of taking in storehouse at curtain increases by a horizontal electric displacement mechanism, when using, first curtain translation mechanism can move towards the direction away from blank a segment distance, and then curtain is transferred, when curtain is delegated to bottom, curtain moves to the direction near substrate again, when curtain is tending towards approaching steel substrate, the magnetic material at the curtain back side can be adsorbed on substrate, but, after use finishes, curtain translation mechanism first can be towards moving away from orientation substrate, now, although curtain can be opened from curtain, but the distance of opening is very limited, and the height of curtain is substantially one meter of left and right, if want to allow curtain thoroughly separated with substrate, the distance moving horizontally at least will reach 2/3rds of height of curtain, because the words that curtain is moved along orientation substrate, magnetic action is very large, and the size that curtain is adsorbed on blank is very long, or cannot automatically complete the action of peeling off curtain, or need artificial participation, can not reach robotization at all, meanwhile, also can there is the phenomenon with the similar motor damage of the third situation.And in the process of transferring at curtain, if curtain moves horizontally not steady or unbalanced words, just very out-of-flatness or even the absorption dislocation of curtain absorption, if misplaced, then corrects, and just relatively requires great effort, bothers.
Above implementation method all can not fundamentally solve the problem of acting freely of soft electronic whiteboard and electronic automatic lifting.
Summary of the invention
Object of the present invention is exactly in order to solve the above-mentioned problems in the prior art, a kind of projecting soft screen apparatus is provided, realizes electronic automatic lifting, curtain is automatically attracted on substrate or automatically and is stripped from from substrate, and can keep the stationarity of curtain lifting, avoid dislocation.
Meanwhile, the present invention also provides a kind of soft electric whiteboard system that comprises projecting soft screen apparatus addressing the above problem.
Object of the present invention is achieved through the following technical solutions: projecting soft screen apparatus, comprise soft curtain and substrate, described soft curtain is arranged at the front end of described substrate, and described soft curtain one end arranges fixed bar, and its other end arranges the reeled tubing of described soft curtain rolling; The two ends of described fixed bar are fixedly installed on respectively the both sides of described substrate; One end of described reeled tubing arranges drive motor, and described reeled tubing two ends arrange respectively one and keep relative to the slide block device not rotating with drive motor.Drive motor drives soft curtain lifting, meanwhile, because drive motor and reeled tubing are arranged at the lift side of soft curtain, in the process declining, provides certain gravity at soft curtain, guarantees the flatness that soft curtain stretches.
Being further defined to of technical solution of the present invention, described soft curtain is dumb light reflective membrane, and the one side of itself and substrate contacts arranges one deck adsorbing medium, and when described substrate surface is iron medium, described adsorbing medium is magnetic medium; When described substrate surface is magnetic medium, described adsorbing medium is iron medium.The character that soft curtain is different with substrate, makes to have each other certain absorption affinity, makes curtain smooth decreasing, and soft curtain is fitted on substrate, without participating in manually.
Further, one end that described reeled tubing does not arrange drive motor arranges balancing weight, and the weight of described balancing weight is corresponding with the weight of described drive motor, keeps the balance of reeled tubing.
Further, at least 2 pulleys are set on the face of described slide block device and described substrate contacts, guarantee that the surface of contact between slide block device and substrate is smooth, avoid substrate to produce wearing and tearing.
Further, described fixed bar top arranges takes in storehouse, and fixed bar is positioned at takes in inside, storehouse, when soft curtain is packed up, is automatically involved in and takes in inside, storehouse, has the effect of beautiful dustproof.
Further, one side of described fixed bar arranges the power supply handle box that alternating current is converted into human safety voltage, described power supply handle box is connected with described drive motor by power lead, and power supply handle box is converted to human safety voltage by interchange forceful electric power, guarantees the safety of using.
Further, lifting position-limit switch is set on described fixed bar, the drive link of described lifting position-limit switch is electrically connected to the drive end of described drive motor.When reeled tubing approaches lifting position-limit switch together with the soft curtain of being rolled up, the drive link of lifting position-limit switch makes the drive end of drive motor change duty, and drive motor is forced to stop operating.
Further, described reeled tubing inside arranges descending spacing switch, and the drive link of described descending spacing switch is electrically connected to the drive end of described drive motor.When the soft curtain of reeled tubing inside is fully expanded, the drive link of descending spacing switch makes the drive end of drive motor change duty, and drive motor is forced to stop operating.
Further, the be laid in edge of described soft curtain of described power lead, not only attractive in appearance but also safety.
Another technical scheme provided by the invention is: a kind of soft electric whiteboard system, comprise computing machine, demonstration and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected to described demonstration and writing device, image signal transmission is to described demonstration and writing device, it is characterized in that, described demonstration and writing device are projecting soft screen apparatus as above.
The outstanding substantive distinguishing features of technical solution of the present invention and significant progressive being mainly reflected in: the soft curtain of projection provided by the invention and the soft electric whiteboard system that comprises this projecting soft screen apparatus, need not any external force auxiliary in the situation that, curtain automatically and is entirely attracted on substrate; After use finishes, curtain is automatically peeled off and is involved in curtain storehouse from substrate; The present invention meets the use habit that people operate electric curtain, there will not be wrinkling, drum or fracture phenomenon, more there will not be the security incidents such as burn-down of electric motor; The present invention realizes automatic control, and not needing increases other motor and supporting mechanism, and cost performance is high.Quickening along with school eduaction IT application process, at the steel blackboard of classroom, green plate and blank, upgrade in the process of electronic whiteboard, use the soft electric whiteboard system that comprises projecting soft screen apparatus described in the present invention just can remove original blackboard, green plate or blank, can not cause a large amount of wastings of resources like this; Need not change under the prerequisite of any existing device, use electronic whiteboard; Reaching under the prerequisite of same effect, saving a large amount of funds and manpower and materials.
Accompanying drawing explanation
Fig. 1 is the structural representation of projecting soft screen apparatus of the present invention;
Fig. 2 is the position view of lifting position-limit switch of the present invention;
Fig. 3 is the electrical schematic diagram of ceiling of the present invention bit switch and descending spacing switch and power supply handle box;
Fig. 4 is the control method process flow diagram of projecting soft screen apparatus of the present invention.
Embodiment
The present embodiment provides a kind of projecting soft screen apparatus, comprises soft curtain 8 and substrate, and described soft curtain 8 is arranged at the front end of described substrate.
Substrate is the green plate of teaching that school uses, and the original green plate of band iron medium ，Bu Dui school is done any transformation.
In addition, in the present embodiment, fixed bar 1 top arranges takes in storehouse 7, and fixed bar is positioned at takes in inside, storehouse, when soft curtain is packed up, is automatically involved in and takes in inside, storehouse, has the effect of beautiful dustproof.One side of fixed bar 1 arranges the power supply handle box 10 that alternating current is converted into human safety voltage, and power supply handle box 10 is connected with drive motor 2 by power lead 4.The be laid in edge of described soft curtain 8 of power lead 4.In addition, power supply handle box 10 is drawn operating key by electric wire, comprises that respectively lifting key, stop key and decline builds, control curtain rising, stop and declining.
And, lifting position-limit switch 5 is set on fixed bar 1, its position scheme of installation as shown in Figure 2, the drive link of described lifting position-limit switch 5 is electrically connected to the drive end of described drive motor 2, in the present embodiment, the drive link of lifting position-limit switch 5 is connected with power supply handle box 10, controls the state of power supply handle box 10.When reeled tubing 9 approaches lifting position-limit switch 5 together with the soft curtain 8 of being rolled up, the drive link of lifting position-limit switch 5 makes power supply handle box 10 become from the duty rising the duty stopping, force the drive end of drive motor 2 to change duty, drive motor is forced to stop operating.Reeled tubing 9 inside arrange descending spacing switch, the drive link of described descending spacing switch is electrically connected to the drive end of described drive motor 2, in the present embodiment, the drive link of descending spacing switch is connected with power supply handle box 10, controls the state of power supply handle box 10.When the soft curtain 8 of reeled tubing 9 inside is fully expanded, the drive link of descending spacing switch makes power supply handle box 10 become from the duty declining the duty stopping, force the drive end of drive motor 2 to change duty, drive motor 2 is forced to stop operating.The electrical schematic diagram of above-mentioned lifting position-limit switch 5 and descending spacing switch and power supply handle box 10 as shown in Figure 3, lifting position-limit switch 5(is single-pole double-throw switch (SPDT)) the pin 1 of rising interrupteur SW 1 and the pin 1 of the power-line terminal J1 of power supply handle box 10 be connected, pin 1 is forward positive source; The pin 2 of rising interrupteur SW 1 drives port one to be connected with the forward of drive motor 2; The pin 1 of decline interrupteur SW 2 of descending spacing switch (being single-pole double-throw switch (SPDT)) and the reversion of drive motor 2 drive port 3 to be connected, and the pin 3 of descending spacing interrupteur SW 2 is connected with the pin 3 of the power-line terminal J1 of power supply handle box 10, and pin 3 is reversion positive source; The public port 2 of drive motor 2 is connected with the pin 2 of the power-line terminal J1 of power supply handle box 10, and pin 2 is for rotating and reverse the public negative pole of power supply.Wherein, rising interrupteur SW 1 is acquiescence Chang Kaiduan conducting, and when soft curtain 8 rises to top, Chang Kaiduan disconnects; Decline switch is the conducting of acquiescence normal-closed end, and when soft curtain 8 drops to bottom, normal-closed end disconnects.
Above-mentioned projecting soft screen apparatus is applied in soft electric whiteboard system, soft electric whiteboard system comprises computing machine, demonstration and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected to described demonstration and writing device, image signal transmission is to described demonstration and writing device, and demonstration and writing device are above-mentioned projecting soft screen apparatus.
The control method process flow diagram of above-mentioned projecting soft screen apparatus as shown in Figure 4, having particular application as of soft electric whiteboard system: the drive motor of this soft screen apparatus 2 is connected to power lead according to the rotating mode of connection, when using, press the decline key of power control box 10, reeled tubing 9 moves down, soft curtain 8 is due to the magnetic effect of magnetic and iron, limit trailing edge is attracted on green plate, because the decline of curtain is stably, simultaneously due to the own wt of curtain reel pipe 9, also can by curtain because of Action of Gravity Field can stretch more smooth.Soft curtain 8 times is during to bottom, because when being arranged on the descending spacing switch senses of reeled tubing 9 inside and being fully expanded to curtain, the drive link of descending spacing switch is recovered by elasticity, makes drive motor 2 be forced to stop operating because circuit for reversing is disconnected.Now, open computing machine and receiving and processing device, picture disply, on soft curtain 8, now just can be used photoelectric pen to write freely in the above.After use finishes, press the lifting key of power control box 10, now, drive motor starts to do relative motion with reeled tubing, because hindering drive motor 2, slide block device does relative motion with substrate, so reeled tubing 9 starts soft curtain 8 toward certainly rolling up with it, in upper volume, because the magnetic action of magnetic and iron is not very strong, soft curtain 8 can automatically be peeled off from substrate, when soft curtain 8 moves to while taking in 7 top, storehouse, taking in the inner lifting position-limit switch senses arranging in storehouse 7 has been raised to and has taken in behind 7 tops, storehouse together with curtain to reeled tubing, the drive link of limit switch is depressed, make drive motor 2 be forced to stop operating because prograde circuit is disconnected, now, soft curtain 8 and reeled tubing 9 are received to simultaneously to be taken in storehouse 7.
Structure and control method in the structure of the projecting soft screen apparatus that the present embodiment provides and control method and embodiment 1 are basic identical, and difference is: base plate strip magnetic medium, soft curtain 8 is iron medium with the adsorbing medium of the one side setting of substrate contacts.
In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (10)
1. projecting soft screen apparatus, comprise soft curtain (8) and substrate, described soft curtain (8) is arranged at the front end of described substrate, it is characterized in that, described soft curtain (8) one end arranges fixed bar (1), and its other end arranges the reeled tubing (9) of described soft curtain (8) rolling; The two ends of described fixed bar (1) are fixedly installed on respectively the both sides of described substrate; One end of described reeled tubing (9) arranges drive motor (2), and described reeled tubing (9) two ends arrange respectively one and keep relative to the slide block device not rotating (3) with drive motor.
2. projecting soft screen apparatus according to claim 1, it is characterized in that, described soft curtain (8) is dumb light reflective membrane, and the one side of itself and substrate contacts arranges one deck adsorbing medium, when described substrate surface is iron medium, described adsorbing medium is magnetic medium; When described substrate surface is magnetic medium, described adsorbing medium is iron medium.
3. projecting soft screen apparatus according to claim 1, is characterized in that, one end that described reeled tubing (9) does not arrange drive motor arranges balancing weight (6), and the weight of described balancing weight (6) is corresponding with the weight of described drive motor (2).
4. projecting soft screen apparatus according to claim 1, is characterized in that, at least 2 pulleys are set on the face of described slide block device (3) and described substrate contacts.
5. projecting soft screen apparatus according to claim 1, is characterized in that, described fixed bar (1) top arranges takes in storehouse (7).
6. projecting soft screen apparatus according to claim 1, it is characterized in that, one side of described fixed bar (1) arranges the power supply handle box (10) that alternating current is converted into human safety voltage, and described power supply handle box (10) is connected with described drive motor (2) by power lead (4).
7. projecting soft screen apparatus according to claim 1, is characterized in that, described fixed bar arranges lifting position-limit switch on (1), and the drive link of described lifting position-limit switch is electrically connected to the drive end of described drive motor (2).
8. projecting soft screen apparatus according to claim 1, is characterized in that, described reeled tubing (9) inside arranges descending spacing switch, and the drive link of described descending spacing switch is electrically connected to the drive end of described drive motor (2).
9. projecting soft screen apparatus according to claim 1, is characterized in that, the be laid in edge of described soft curtain (8) of described power lead (4).
10. a soft electric whiteboard system, comprise computing machine, demonstration and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected to described demonstration and writing device, image signal transmission is to described demonstration and writing device, it is characterized in that, described demonstration and writing device are the projecting soft screen apparatus described in the arbitrary claim of claim 1 ~ 9.
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| CN201310474187.4A CN103543594B (en) | 2013-10-12 | 2013-10-12 | Projecting soft screen apparatus and comprise the soft electric whiteboard system of this projecting soft screen apparatus |
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| CN201310474187.4A CN103543594B (en) | 2013-10-12 | 2013-10-12 | Projecting soft screen apparatus and comprise the soft electric whiteboard system of this projecting soft screen apparatus |
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| CN103543594B CN103543594B (en) | 2015-08-05 |
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Cited By (9)
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| CN106125485A (en) * | 2016-07-19 | 2016-11-16 | 柳州六品科技有限公司 | A kind of pressure-controlled automatic projection curtain |
| CN106406009A (en) * | 2016-11-25 | 2017-02-15 | 盐城工学院 | Elastic touch control pedestal for electric projection screen |
| CN106406010A (en) * | 2016-11-30 | 2017-02-15 | 盐城工学院 | Electric curtain |
| WO2018196386A1 (en) * | 2017-04-25 | 2018-11-01 | 青岛海信电器股份有限公司 | Laser projection screen and projection system |
| CN109188845A (en) * | 2018-09-11 | 2019-01-11 | 安徽国耀通信科技有限公司 | A kind of film protection projection screen |
| CN111026888A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Library intelligent reading system based on computer |
| CN111028570A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Intelligent reading library |
| CN112925160A (en) * | 2019-12-05 | 2021-06-08 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN112925161A (en) * | 2019-12-05 | 2021-06-08 | 青岛海信激光显示股份有限公司 | Laser projection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112925160A (en) * | 2019-12-05 | 2021-06-08 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN112925161A (en) * | 2019-12-05 | 2021-06-08 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111028570A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Intelligent reading library |
| CN111028570B (en) * | 2019-12-26 | 2021-11-19 | 成都师范学院 | Intelligent reading library |
| CN111026888A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Library intelligent reading system based on computer |
| CN111026888B (en) * | 2019-12-26 | 2023-04-07 | 成都师范学院 | Library intelligent reading system based on computer |
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| CN103543594B (en) | 2015-08-05 |
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