CN103481702A - Light-emitting diode (LED) blackboard based on pressure sensor - Google Patents
Light-emitting diode (LED) blackboard based on pressure sensor Download PDFInfo
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- CN103481702A CN103481702A CN201310437723.3A CN201310437723A CN103481702A CN 103481702 A CN103481702 A CN 103481702A CN 201310437723 A CN201310437723 A CN 201310437723A CN 103481702 A CN103481702 A CN 103481702A
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Abstract
The invention discloses a light-emitting diode (LED) blackboard based on a pressure sensor. A transparent writing protection layer, an LED displaying layer and a pressure sensor layer are sequentially arranged from outside to inside. The blackboard further comprises a piezoelectric overlapping signal conversion module and a central processing unit. The pressure sensor layer is connected with the central processing unit through the piezoelectric overlapping signal conversion module, and the central processing unit is connected with the LED displaying layer. A pressure signal generated by writing is exerted on the pressure sensor layer under the transfer effects of the transparent writing protection layer and the LED displaying layer sequentially. The pressure sensor layer transmits the collected pressure signal to the piezoelectric overlapping signal conversion module, the piezoelectric overlapping signal conversion module generates a corresponding digital control signal and transmits the digital control signal to the central processing unit, and the central processing unit controls displaying of the LED displaying layer through the digital control signal. The blackboard is convenient to use, capable of displaying written content clearly and solving the light reflecting problem and free of dust pollution. The content can be modified and cleared conveniently and quickly.
Description
Technical field
The invention discloses a kind of LED blackboard based on pressure sensor, relate to the applied technical field that pressure sensor and LED technology combine.
Background technology
Blackboard is a kind of requisite traditional teaching aid, and in prior art, blackboard commonly used mainly comprises the traditional blackboard of using chalk-writing and the plastic blackboard that uses water-color paintbrush to write.The blackboard of traditional use chalk-writing can cause larger dust pollution, and the production of chalk simultaneously and consumption have also caused the pollution of environment and the waste of resource.And the plastic blackboard that adopts water-color paintbrush to write, if writing rear interlude grows be difficult to cleaning, also easily causes writing unclear in the time of reusable.Simultaneously these two kinds of blackboards all reflective situation can occur when in use, and being easy to of side, classroom do not see the content on Chu's blackboard because of blackboard reflective light.
Summary of the invention
Technical problem to be solved by this invention is: for the defect of prior art, provide a kind of LED blackboard based on pressure sensor, with the LED light, show and replace traditional chalk or water-color paintbrush writing.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of LED blackboard based on pressure sensor, set gradually transparent protective layer, LED display layer, the pressure sensor layer write from outside to inside, also comprises laminated piezoelectric signal conversion module and central processing unit;
Described pressure sensor layer is connected with central processing unit by the laminated piezoelectric signal conversion module, and central processing unit is connected with the LED display layer;
The user is write in the transparent protective layer outside of writing; the pressure signal produced passes through the transparent transfer function of protective layer, LED display layer of writing successively on the pressure sensor layer; the pressure sensor layer transfers to the laminated piezoelectric signal conversion module by the pressure signal collected; the laminated piezoelectric signal conversion module produces corresponding digital controlled signal and digital controlled signal is transferred to central processing unit, and central processing unit is controlled the demonstration of LED display layer according to digital controlled signal.
As the present invention further optimization scheme, the described transparent protective layer of writing is transparent flexible plastic layer, and thickness is 0.2 centimetre.
As the present invention further optimization scheme, described LED display layer comprises N LED display lamp module, and wherein the value of N is natural number; The square that the dimensions of LED display lamp module is 0.5 centimetre of the length of side.
As the present invention further optimization scheme, described central processing unit is the PLC controller.
The present invention adopts above technical scheme compared with prior art, has following technique effect: easy to use, written contents can clearly be shown, has avoided reflective problem.There is no dust pollution, alter, the cleaning content is convenient and swift.
The accompanying drawing explanation
Fig. 1 is module diagram in kind of the present invention,
Wherein: 1. the transparent protective layer of writing, 2. LED display layer, 3. pressure sensor layer, 4. single LED display lamp module, 5. laminated piezoelectric signal conversion module, 6. central processing unit.
Fig. 2 is circuit module connection diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of LED blackboard based on pressure sensor, set gradually transparent protective layer, LED display layer, the pressure sensor layer write to module diagram in kind of the present invention from outside to inside, also comprises laminated piezoelectric signal conversion module and central processing unit; Described pressure sensor layer is connected with central processing unit by the laminated piezoelectric signal conversion module, and central processing unit is connected with the LED display layer.
Transparent protective layer, LED display layer, the pressure sensor layer write closely connects each other, guarantees the laser propagation effect of pressure.Laminated piezoelectric signal conversion module and central processing unit can be arranged at outside blackboard, and the installation of the blackboard integral body that is is more convenient.
As the present invention further optimization scheme, the described transparent protective layer of writing is transparent flexible plastic layer, and thickness is 0.2 centimetre.Should guarantee the visual effect of transparence, also will guarantee the LED lamp is played to necessary protective effect.
As the present invention further optimization scheme, described LED display layer comprises N LED display lamp module, and wherein the value of N is natural number; The square that the dimensions of LED display lamp module is 0.5 centimetre of the length of side.The overall dimensions of blackboard can specifically be made according to actual needs, and the LED display lamp module of the larger needs of size is more.
As the present invention further optimization scheme, described central processing unit is the PLC controller.Also can adopt other common Programmable Logic Controller, for example single-chip microcomputers.
Circuit module connection diagram of the present invention as shown in Figure 2; the user is write in the transparent protective layer outside of writing; the pressure signal produced passes through the transparent transfer function of protective layer, LED display layer of writing successively on the pressure sensor layer; the pressure sensor layer transfers to the laminated piezoelectric signal conversion module by the pressure signal collected; the laminated piezoelectric signal conversion module produces corresponding digital controlled signal and digital controlled signal is transferred to central processing unit, and central processing unit is controlled the demonstration of LED display layer according to digital controlled signal.Program setting in central processing unit, can further realize the writing change, the functions such as legibility.
Claims (4)
1. the LED blackboard based on pressure sensor, is characterized in that: set gradually from outside to inside transparent protective layer, LED display layer, the pressure sensor layer write, also comprise laminated piezoelectric signal conversion module and central processing unit;
Described pressure sensor layer is connected with central processing unit by the laminated piezoelectric signal conversion module, and central processing unit is connected with the LED display layer;
The user passes through the transparent transfer function of protective layer, LED display layer of writing on the pressure sensor layer successively at the transparent pressure signal produced of writing when the protective layer outside is write; the pressure sensor layer transfers to the laminated piezoelectric signal conversion module by the pressure signal collected; the laminated piezoelectric signal conversion module produces corresponding digital controlled signal and digital controlled signal is transferred to central processing unit, and central processing unit is controlled the demonstration of LED display layer according to digital controlled signal.
2. a kind of LED blackboard based on pressure sensor as claimed in claim 1, it is characterized in that: the described transparent protective layer of writing is transparent flexible plastic layer, and thickness is 0.2 centimetre.
3. a kind of LED blackboard based on pressure sensor as claimed in claim 1, it is characterized in that: described LED display layer comprises N LED display lamp module, and wherein the value of N is natural number; The square that the dimensions of LED display lamp module is 0.5 centimetre of the length of side.
4. a kind of LED blackboard based on pressure sensor as claimed in claim 1, it is characterized in that: described central processing unit is the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437723.3A CN103481702A (en) | 2013-09-24 | 2013-09-24 | Light-emitting diode (LED) blackboard based on pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437723.3A CN103481702A (en) | 2013-09-24 | 2013-09-24 | Light-emitting diode (LED) blackboard based on pressure sensor |
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| Publication Number | Publication Date |
|---|---|
| CN103481702A true CN103481702A (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310437723.3A Withdrawn CN103481702A (en) | 2013-09-24 | 2013-09-24 | Light-emitting diode (LED) blackboard based on pressure sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103481702A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297579A (en) * | 2018-03-23 | 2018-07-20 | 刘梓萌 | A kind of teaching of senior high school environment friendly blackboard |
| CN108990222A (en) * | 2017-05-31 | 2018-12-11 | 深圳市海洋王照明工程有限公司 | A kind of classroom intelligent power saving lighting control system |
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| CN2434144Y (en) * | 2000-07-25 | 2001-06-13 | 邢志周 | Electronic blackboard |
| KR20040074552A (en) * | 2003-02-19 | 2004-08-25 | 김재훈 | The electric light the type electronic chalkboard which it sells |
| CN1597340A (en) * | 2004-08-22 | 2005-03-23 | 王友林 | Magnetic electronic blackboard display system |
| WO2007063859A1 (en) * | 2005-12-02 | 2007-06-07 | The University Of Tokyo | Display device and transparent magnetic film |
| CN101446866A (en) * | 2008-12-19 | 2009-06-03 | 清华大学深圳研究生院 | Light-emitting device used for positioning and positioning method |
| CN101691094A (en) * | 2009-09-16 | 2010-04-07 | 无锡爱迪信光电科技有限公司 | Led drawing board |
| US20110310056A1 (en) * | 2010-06-18 | 2011-12-22 | Arolltech Co., Ltd. | Electronic blackboard |
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2013
- 2013-09-24 CN CN201310437723.3A patent/CN103481702A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434144Y (en) * | 2000-07-25 | 2001-06-13 | 邢志周 | Electronic blackboard |
| KR20040074552A (en) * | 2003-02-19 | 2004-08-25 | 김재훈 | The electric light the type electronic chalkboard which it sells |
| CN1597340A (en) * | 2004-08-22 | 2005-03-23 | 王友林 | Magnetic electronic blackboard display system |
| WO2007063859A1 (en) * | 2005-12-02 | 2007-06-07 | The University Of Tokyo | Display device and transparent magnetic film |
| CN101446866A (en) * | 2008-12-19 | 2009-06-03 | 清华大学深圳研究生院 | Light-emitting device used for positioning and positioning method |
| CN101691094A (en) * | 2009-09-16 | 2010-04-07 | 无锡爱迪信光电科技有限公司 | Led drawing board |
| US20110310056A1 (en) * | 2010-06-18 | 2011-12-22 | Arolltech Co., Ltd. | Electronic blackboard |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108990222A (en) * | 2017-05-31 | 2018-12-11 | 深圳市海洋王照明工程有限公司 | A kind of classroom intelligent power saving lighting control system |
| CN108990222B (en) * | 2017-05-31 | 2021-01-22 | 深圳市海洋王照明工程有限公司 | Classroom intelligent energy-saving illumination control system |
| CN108297579A (en) * | 2018-03-23 | 2018-07-20 | 刘梓萌 | A kind of teaching of senior high school environment friendly blackboard |
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Application publication date: 20140101 |