CN103543594B - Projecting soft screen apparatus and comprise the soft electric whiteboard system of this projecting soft screen apparatus - Google Patents
Projecting soft screen apparatus and comprise the soft electric whiteboard system of this projecting soft screen apparatus Download PDFInfo
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- CN103543594B CN103543594B CN201310474187.4A CN201310474187A CN103543594B CN 103543594 B CN103543594 B CN 103543594B CN 201310474187 A CN201310474187 A CN 201310474187A CN 103543594 B CN103543594 B CN 103543594B
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Abstract
The invention provides 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 the both sides of described substrate respectively; One end of described reeled tubing arranges drive motor, and described reeled tubing two ends arrange a slide block device keeping relative to not rotating with drive motor respectively.Meanwhile, present invention also offers the soft electric whiteboard system comprising this projecting soft screen apparatus.The present invention, under the prerequisite need not changing any existing equipment, uses electronic whiteboard, can not cause a large amount of wastings of resources, under the prerequisite reaching same effect, save a large amount of funds and manpower and materials.
Description
Technical field
The present invention relates to a kind of electric whiteboard system and projection arrangement thereof, the projecting soft screen apparatus particularly relating to a kind of soft electric whiteboard system and comprise, belongs to electronic whiteboard technology field.
Background technology
So-called soft electronic whiteboard, exactly soft curtain the function of reflective projection image content and rigid sheet material (as blank that school's green plate of steel, steel blackboard, available free ink pen are write etc., being below the referred to as substrate) function that photoelectric pen can be facilitated to write can be organically combined that formation not only conveniently projects, but also the electric whiteboard system facilitating photoelectric pen to write.When deployed, only soft curtain need be launched to be adsorbed on substrate by the magnetic material at the curtain back side and the ferrous material absorption principle of substrate by curtain, projected picture is incident upon on curtain, uses the electronic whiteboard photoelectric pen of optical imaging concept can mark on curtain projected picture and write.Like this, both overcome curtain can do projection reflected picture but photoelectric pen cannot be made because it is too soft to touch and be inconvenient to the feature that uses photoelectric pen to write, and overcome again substrate and facilitate photoelectric pen to write but because its reflectivity is inadequate or the too low feature can not doing projected picture of reflection gain.Curtain in soft electric whiteboard system scribbles diffuse-reflective material, can reflective projection picture, facilitate again photoelectric pen write and be not easily worn.
At present, the soft electronic whiteboard in interactive electronic white board field has following four kinds of implementation methods, but all undesirable, all there is fatal defects, does not all reach the stage of practical application all the time.
One is directly put up mode by hand: passed through to utilize magnetic absorption principle to be adsorbed on substrate by hand by the dumb light reflective membrane of the back side of applicable projected picture area with magnetic material, then computer picture is projected on this reflective membrane, marks in real time on this reflective membrane with photoelectric pen or write; After use terminates, 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 bothers very much, dumb light reflective membrane than be easier to craft adsorb or in the process opened because unbalance stress is impaired, or foldingly there is fine wrinkle, bulge or slight crack; Be not easy to keep smooth, repeatedly curtain could be adsorbed smooth with hand or rag; Also there is the phenomenon that absorption is tilted simultaneously.
Two is manual curtain modes: paste commercially on existing manual curtain by dumb light reflective membrane by viscose, again curtain reverse of the cloth is coated magnetic material, when deployed, by the pull bar of manual curtain while toward drop-down, in order to prevent, curtain is just drop-down to be just attracted on substrate, so also want while pull outward toward the direction away from substrate, when moving appropriate location to, again lentamente, evenly that curtain is 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 write on the projected picture of dumb light reflective membrane with photoelectric pen or mark, after use terminates, because magnetic absorption force principal, the flexible convolute mechanism of curtain is unable by curtain rollback curtain storehouse, so just first the pull bar hand of curtain is pulled outward, after all being opened from top to bottom by the curtain be adsorbed on substrate, then flexible convolute mechanism could be automatically involute toward curtain storehouse by curtain.This kind of mode, operates very complicated.
Three is electric curtain modes: on the basis of the second way, use electric curtain, but when curtain is transferred automatically, because magnetic principle, curtain can be attracted on plate, and curtain just can not be transferred smoothly, also needs artificial assisting to pull outward; When needing after use terminates to involve in curtain, also need manually first curtain and substrate to be opened completely, the electronic pull-up of ability, although increase electronic, effect is little.The conventional practice of electric curtain is used according to people, curtain on meeting direct control curtain control enclosure rises or button falls in curtain, when curtain is transferred, because the magnetic absorption principle of curtain back side magnetic and substrate, curtain is just adsorbed in the beginning of transferring, and transfers and cannot carry out at all; Equally, when curtain is not yet complete and hard plate material is opened, 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, motor continuous firing can be caused to generate heat, burn, the security incidents such as motor is on fire more seriously can occur.
Four is two-dimentional Electronic control modes: on the basis of the third mode, increase an electric translation mechanism, specifically: increase by a horizontal electric displacement mechanism at the stiff end in curtain storage storehouse, when deployed, first curtain translation mechanism can move a segment distance towards the direction away from blank, and then curtain is transferred, when curtain is delegated to bottom, curtain moves to the direction near substrate again, when curtain is tending towards close to steel substrate, the magnetic material at the curtain back side can be adsorbed on substrate, but, after use terminates, first curtain translation mechanism can move towards away from orientation substrate, now, although curtain can be opened from curtain, but the distance opened is very limited, and the height of curtain is substantially at about one meter, if want to allow curtain thoroughly be separated with substrate, the distance moved horizontally at least will reach 2/3rds of height of curtain, because by the words of curtain along orientation substrate movement, magnetic action is very large, and the size that curtain is adsorbed on blank is very long, or automatically cannot complete the action of peeling off curtain, or need artificial participation, robotization can not be reached at all, meanwhile, the phenomenon with the similar motor damage of the third situation can also be there is.And in the process that curtain is transferred, 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, just compares effort, trouble.
Above implementation method all fundamentally can not 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 to solve the above-mentioned problems in the prior art, there is provided a kind of projecting soft screen apparatus, realize electronic automatic lifting, curtain is automatically attracted on substrate or automatically and is stripped from substrate, and the stationarity that curtain can be kept to be elevated, avoid dislocation.
Meanwhile, the present invention also provides a kind of soft electric whiteboard system comprising projecting soft screen apparatus solved the 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 the both sides of described substrate respectively; One end of described reeled tubing arranges drive motor, and described reeled tubing two ends arrange a slide block device keeping relative to not rotating with drive motor respectively.Drive motor drives soft curtain to be elevated, and meanwhile, because drive motor and reeled tubing are arranged at the lift side of soft curtain, in the process that soft curtain declines, provides certain gravity, ensures 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 ferrous medium, described adsorbing medium is magnetic medium; When described substrate surface is magnetic medium, described adsorbing medium is ferrous medium.The character that soft curtain is different with substrate, makes to have certain absorption affinity each other, makes curtain smooth decreasing, and makes soft curtain fit on substrate, without the need to 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, the face of described slide block device and described substrate contacts is arranged at least 2 pulleys, ensure that the surface of contact between slide block device and substrate is smooth, avoid producing wearing and tearing to substrate.
Further, arrange storage storehouse above described fixed bar, it is inner that fixed bar is positioned at storage storehouse, when soft curtain is packed up, is automatically involved in storage storehouse inner, has the effect of beautiful dustproof.
Further, it is the power supply handle box of human safety voltage that the side of described fixed bar is arranged AC conversion, described power supply handle box is connected with described drive motor by power lead, and interchange forceful electric power is converted to human safety voltage by power supply handle box, ensures the safety used.
Further, described fixed bar is arranged lifting position-limit switch, the drive link of described lifting position-limit switch is electrically connected with the drive end of described drive motor.When reeled tubing together with by the soft curtain rolled up close to lifting position-limit switch time, 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 with 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, described power lead is laid in the edge of described soft curtain, 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, display and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected with described display and writing device, image signal transmission is to described display and writing device, it is characterized in that, described display and writing device are projecting soft screen apparatus as above.
The outstanding substantive distinguishing features of technical solution of the present invention and to be progressively mainly reflected in significantly: the soft curtain of projection provided by the invention and comprise the soft electric whiteboard system of this projecting soft screen apparatus, when need not any external force auxiliary, curtain is automatically and is entirely attracted on substrate; After use terminates, curtain is automatically peeled off from substrate and is involved in curtain storehouse; 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.Along with the quickening of school eduaction IT application process, upgrade in the process of electronic whiteboard at the steel blackboard of classroom, green plate and blank, use the soft electric whiteboard system comprising projecting soft screen apparatus described in the present invention just can remove original blackboard, green plate or blank, a large amount of wastings of resources can not be caused like this; Under the prerequisite that need not change any existing device, use electronic whiteboard; Under the prerequisite reaching same effect, a large amount of funds and manpower and materials are saved.
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
Embodiment 1
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 of school, and band ferrous medium, does not do any transformation to the original green plate of school.
Soft curtain 8 is dumb light reflective membrane, and the one side of itself and substrate contacts arranges one deck adsorbing medium, and in the present embodiment, adsorbing medium is magnetic medium.One end of soft curtain 8 arranges fixed bar 1, and its other end arranges reeled tubing 9.The two ends of fixed bar 1 are fixedly installed on the appropriate location in the side walls of substrate respectively by least 2 hooks or screw.Reeled tubing 9 is by the rolling of soft curtain 8, and its one end arranges drive motor 2, and the other end arranges balancing weight 6, and the weight of balancing weight 6 is corresponding with the weight of drive motor 2, to keep the balance of soft curtain 8.And, reeled tubing 9 two ends arrange a slide block device 3 keeping relative to not rotating with drive motor respectively, slide block device 3 and the face of described substrate contacts arrange at least 2 pulleys, ensures that the surface of contact between slide block device and substrate is smooth, avoid producing wearing and tearing to substrate.
In addition, in the present embodiment, arrange storage storehouse 7 above fixed bar 1, it is inner that fixed bar is positioned at storage storehouse, when soft curtain is packed up, is automatically involved in storage storehouse inner, has the effect of beautiful dustproof.It is the power supply handle box 10 of human safety voltage that the side of fixed bar 1 is arranged AC conversion, and power supply handle box 10 is connected with drive motor 2 by power lead 4.Power lead 4 is laid in the edge of described soft curtain 8.In addition, power supply handle box 10 draws operating key by electric wire, comprises lifting key, stop key and decline respectively and builds, and controls the rising of curtain, stopping and decline.
And, fixed bar 1 is arranged lifting position-limit switch 5, its position scheme of installation as shown in Figure 2, the drive link of described lifting position-limit switch 5 is electrically connected with 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 together with by the soft curtain 8 rolled up close to lifting position-limit switch 5 time, the drive link of lifting position-limit switch 5 makes power supply handle box 10 become the duty of stopping from the duty risen, force the drive end of drive motor 2 to change duty, drive motor is forced to stop operating.Reeled tubing 9 inside arranges descending spacing switch, the drive link of described descending spacing switch is electrically connected with 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 the duty of stopping from the duty declined, 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, the pin a of rising interrupteur SW 1 of lifting position-limit switch 5 (for single-pole double-throw switch (SPDT)) is connected with the pin d of the power-line terminal J1 of power supply handle box 10, and pin d is for rotating forward positive source; The pin b of rising interrupteur SW 1 drives port g to be connected with the rotating forward of drive motor 2; The pin j of decline interrupteur SW 2 of descending spacing switch (for single-pole double-throw switch (SPDT)) drives port i to be connected with the reversion of drive motor 2, the pin l of descending spacing interrupteur SW 2 is connected with the pin f of the power-line terminal J1 of power supply handle box 10, and pin f is reversion positive source; The public port h of drive motor 2 is connected with the pin e of the power-line terminal J1 of power supply handle box 10, and pin e is the public negative pole rotating and reverse 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, display and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected with described display and writing device, image signal transmission is to described display and writing device, and display 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 2 of this soft screen apparatus is connected power lead according to the rotating mode of connection, when deployed, 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 ferrous, limit trailing edge is attracted on green plate, decline due to curtain is stable, 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.When soft curtain 8 times is to bottom, because time the descending spacing switch senses being arranged on reeled tubing 9 inside is 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 is presented on soft curtain 8, and photoelectric pen now just can be used to write freely above.After use terminates, press the lifting key of power control box 10, now, drive motor starts to do relative motion with reeled tubing, because slide block device hinders drive motor 2 and substrate to do relative motion, so reeled tubing 9 starts soft curtain 8 toward certainly rolling up with it, while upper volume, because the magnetic action of magnetic and ferrous is not very strong, soft curtain 8 automatically can be peeled off from substrate, when soft curtain 8 moves to storage 7 top, storehouse, after the lifting position-limit switch senses that inside, storage storehouse 7 is arranged has been raised to storage top, storehouse 7 to reeled tubing together with curtain, the drive link of limit switch is depressed, drive motor 2 is made to be forced to stop operating because prograde circuit is disconnected, now, soft curtain 8 and reeled tubing 9 are received in storage storehouse 7 simultaneously.
Embodiment 2
The structure of the projecting soft screen apparatus that the present embodiment provides and control method substantially identical with control method with the structure in embodiment 1, difference is: substrate carrying magnetic medium, and the adsorbing medium that soft curtain 8 is arranged with the one side of substrate contacts is ferrous medium.
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 application claims.
Claims (8)
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 the both sides of described substrate respectively; One end of described reeled tubing (9) arranges drive motor (2), and described reeled tubing (9) two ends arrange one respectively and keep relative to the slide block device do not rotated (3) with drive motor;
Described soft curtain (8) 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 ferrous medium, described adsorbing medium is magnetic medium; When described substrate surface is magnetic medium, described adsorbing medium is ferrous medium;
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).
2. projecting soft screen apparatus according to claim 1, is characterized in that, described slide block device (3) and the face of described substrate contacts arrange at least 2 pulleys.
3. projecting soft screen apparatus according to claim 1, is characterized in that, described fixed bar (1) top arranges storage storehouse (7).
4. projecting soft screen apparatus according to claim 1, it is characterized in that, it is the power supply handle box (10) of human safety voltage that the side of described fixed bar (1) is arranged AC conversion, and described power supply handle box (10) is connected with described drive motor (2) by power lead (4).
5. projecting soft screen apparatus according to claim 1, is characterized in that, (1) arranges lifting position-limit switch with described fixed bar, and the drive link of described lifting position-limit switch is electrically connected with the drive end of described drive motor (2).
6. 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 with the drive end of described drive motor (2).
7. projecting soft screen apparatus according to claim 4, is characterized in that, described power lead (4) is laid in the edge of described soft curtain (8).
8. a soft electric whiteboard system, comprise computing machine, display and writing device, photoelectric pen and receiving and processing device, described computing machine is electrically connected with described display and writing device, image signal transmission is to described display and writing device, it is characterized in that, described display and writing device are the projecting soft screen apparatus described in the arbitrary claim of claim 1 ~ 7.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN103543594A CN103543594A (en) | 2014-01-29 |
| CN103543594B true CN103543594B (en) | 2015-08-05 |
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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 |
| CN106406009B (en) * | 2016-11-25 | 2018-06-29 | 盐城工学院 | A kind of elastic touch-control pedestal for electric projecting curtain |
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| CN109188845B (en) * | 2018-09-11 | 2020-12-08 | 安徽国耀通信科技有限公司 | Film protection projection curtain |
| CN112925161B (en) * | 2019-12-05 | 2022-11-22 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN116107149A (en) * | 2019-12-05 | 2023-05-12 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111026888B (en) * | 2019-12-26 | 2023-04-07 | 成都师范学院 | Library intelligent reading system based on computer |
| CN111028570B (en) * | 2019-12-26 | 2021-11-19 | 成都师范学院 | Intelligent reading library |
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