CN101515040B - Pen color recognition device for electronic blackboard - Google Patents
Pen color recognition device for electronic blackboard Download PDFInfo
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- CN101515040B CN101515040B CN2008102206874A CN200810220687A CN101515040B CN 101515040 B CN101515040 B CN 101515040B CN 2008102206874 A CN2008102206874 A CN 2008102206874A CN 200810220687 A CN200810220687 A CN 200810220687A CN 101515040 B CN101515040 B CN 101515040B
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- tongue tube
- electronic blackboard
- recognition device
- lettering pen
- processing unit
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- 238000010586 diagram Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
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- 238000003491 array Methods 0.000 description 1
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- 239000012467 final product Substances 0.000 description 1
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Abstract
The invention provides a pen color recognition device for an electronic blackboard, which comprises an inductor, induction targets and a processing unit, wherein the inductor is used for inducing the induction targets, converting induction results to corresponding electric signals and transmitting the electric signals to the processing unit; the induction targets are arranged on set positions of a writing pen, and are used for recognizing pen color of the whiting pen in different number and distribution positions; and the processing unit is used for processing the electric signals transmitted by the inductor and generating corresponding pen color recognition results according to the changing condition of the electric signals. The device has the advantages of simple structure and high recognition rate.
Description
Technical field
The present invention relates to color identification field, a particularly a kind of look recognition device that is applied to electronic blackboard.
Background technology
At present, the digital and electronic blackboard mainly contains two kinds of infrared fixed look identification and the identifications of color reaction device etc. to the color identification method of the lettering pen that carries on the market.The implementation of infrared fixed look identification is that pen is placed in the groove of constant color, be the color that the groove that is placed on which kind of color is discerned pen by identification pen then actually, be placed in the different grooves with a kind of pen like this and different colors will occur.But the discrimination of this method is easy to be subjected to the infrared light component of surround lighting to influence and causes mistake identification.And a color reaction device look is discerned, and implement device requires the machining accuracy height, simultaneously the placement location of pen in a groove is required relatively strictness, therefore is difficult to realization and False Rate than higher.
Summary of the invention
The object of the present invention is to provide a kind of device that is used for a look identification of electronic blackboard, this method not only can simply determine the color of the pen of user's use, and is not subjected to the influence of surround lighting, discrimination height.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: an a kind of look recognition device that is used for electronic blackboard, be characterized in, and comprise inductor, induction targets, processing unit;
Described inductor is used to respond to described induction targets, and will respond to the result and be converted into corresponding electric signal and be sent to described processing unit;
Described induction targets is located in the position of setting on the lettering pen, is used to distinguish a look of lettering pen with varying number and distributing position;
Described processing unit is used to handle the electric signal that described inductor transmits, and produces corresponding look recognition result according to the situation of change of described electric signal.
In order to realize the present invention better, a described look recognition device that is used for electronic blackboard comprises that further is provided with at least two electronics pallets of placing a groove of described lettering pen; Each described trench bottom is provided with described inductor accordingly by the position of setting on the described lettering pen, makes it can sense corresponding with it induction targets; Described processing unit is located at described electronics tray bottom, is electrically connected with described inductor.
More specifically, described inductor is meant the tongue tube sensor circuit; Described induction targets is meant and is arranged in the lettering pen, is distributed in the position set on the lettering pen center line and polarity towards identical magnet.
Described tongue tube sensor circuit is connected to form by following mode by tongue tube array, light emitting diode and resistance: described resistance is connected the positive pole of described light emitting diode, and the negative pole of described light emitting diode connects described tongue tube array; The negative pole of described light emitting diode is electrically connected with described processing unit.
Described tongue tube array is meant two or more tongue tubes in parallel; If a groove than broad, has exceeded the detection width of single tongue tube inductor, just need two or more tongue tubes be set on the relevant position of a groove, just can sense induction targets.
Tongue tube array in the described tongue tube sensor circuit be arranged at described magnet under, tongue tube is best to the inductive effects of magnet like this.
Described processing unit is meant 8 single-chip microcomputers, and that specifically adopt is 8 single-chip microcomputer W77LE516 of WINBOND.
The present invention is used for a look recognition device of electronic blackboard, its principle of work is: when sensing magnet, tongue tube closure in the tongue tube sensor circuit, tongue tube sensor circuit output low level, and when responding to less than magnet, tongue tube in the tongue tube sensor circuit is opened, tongue tube sensor circuit output high level.Therefore, the magnet of varying number or diverse location is set on lettering pen, makes the different high-low level combination of corresponding tongue tube sensor circuit output, just can distinguish different lettering pens.Every lettering pen is preestablished a look, just can reach the purpose of an identification look by the combination of identification high-low level.For example be used to place magnet, represent the position set with 1,2,3 respectively in three positions of inner setting of every lettering pen, then the placement location of the magnet in the lettering pen just have 1,2,3,12,13,23,123 7 kind of combination.In each trench bottom relevant position three tongue tube sensor circuits are set all, wherein No. 1 tongue tube sensor circuit corresponding in the lettering pen with 1 desired location of representing, and the like.Distribute and quantity according to the magnet positions that is placed in the lettering pen, tongue tube sensor circuit in each groove just can export 011,101,110,001,010,100, a kind of in 000 7 kind of high-low level signal combination (wherein 1 represents high level, 0 represents low level, when no lettering pen is placed in the groove, the high level combination of output 111).The output level combination of the tongue tube sensor circuit in each groove is all inequality, so just can reach the differentiation lettering pen, thereby reaches the purpose of distinguishing a look.Predefined the corresponding look of level signal combination that processing unit transmits according to each trench bottom tongue tube sensor circuit, be positioned at a look of each groove lettering pen correspondence when judging original state, and note, when picking up lettering pen, the people writes, the level signal of the tongue tube inductor of a trench bottom of this lettering pen correspondence transmission at this moment changes, as having become 111 from 100, processing unit judges which groove is the level signal that changes come from, and discerns a look of the lettering pen correspondence of using according to record before.
The present invention with respect to the major advantage and the effect of prior art is:
1, a look recognition device that is used for electronic blackboard of the present invention, simple in structure, processing and manufacturing is easy, and can enlarge induction range by increasing the tongue tube in the tongue tube sensor circuit, and therefore the placement location to lettering pen requires lower;
2, a look recognition device that is used for electronic blackboard of the present invention is because it is to utilize the tongue tube sensor circuit that the identification of magnet is formed the identification of a look to be judged therefore can not be subjected to the influence of surround lighting, False Rate is low.
Description of drawings
Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 1 d are the distribution schematic diagrams of magnet in the lettering pen that adopts of embodiment;
Fig. 2 is the structural representation of the electronics pallet that adopts of embodiment;
Fig. 3 a is any a kind of circuit theory diagrams in three tongue tube sensor circuits that any trench bottom is provided with in the electronics pallet of Fig. 2, and Fig. 3 b is any the another kind of circuit theory diagrams in three tongue tube sensor circuits that any trench bottom is provided with in the electronics pallet of Fig. 2.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
The present invention is used for a look recognition device of electronic blackboard, comprises magnet, tongue tube sensor circuit, processing unit, and that processing unit specifically adopts is 8 single-chip microcomputer W77LE516 of WINBOND.Lettering pen is provided with at least two positions of placing magnet, be provided with three positions (center line along lettering pen distributes) of placing magnet in the lettering pen that present embodiment adopts, with 1,2,3 expressions, four lettering pens that use are arranged to four kinds of colors as required respectively, the placement situation of magnet such as Fig. 1 a in the lettering pen, Fig. 1 b, shown in Fig. 1 c and Fig. 1 d, magnet is positioned over position 1 and 2 among Fig. 1 a, magnet is positioned over position 1 and 3 among Fig. 1 b, magnet is positioned over position 1 among Fig. 1 c, magnet is positioned over position 1 among Fig. 1 d, 2,3, magnet polarity (the S utmost point or the N utmost point) is towards a direction, (design mainly is convenient placement and takes out the length of lettering pen like this than the short 5mm of a groove, the groove length longer than lettering pen can also suitably be regulated according to tongue tube sensitivity, only needs to guarantee that the tongue tube sensor circuit can sense corresponding magnet and get final product).The electronics pallet is provided with four identical grooves 7, as shown in Figure 2, each trench bottom all in the same manner corresponding to the position 1,2,3 of placing magnet in the lettering pen, is provided with three tongue tube sensor circuits 4,5,6, it is electrically connected with processing unit 11, and tongue tube sensor circuit 4,5 is identical with 6.The circuit theory diagrams of any in three tongue tube sensor circuits that each trench bottom is provided with are shown in Fig. 3 a, and the tongue tube sensor circuit is interconnected by tongue tube array, light emitting diode 9 and resistance 10 to be formed; Resistance 10 connects the positive pole of described light emitting diode 9, and the negative pole of light emitting diode 9 connects the tongue tube array, and the tongue tube array is composed in parallel by two tongue tubes 8; The negative pole of light emitting diode is connected with the universaling I/O port of 8 single-chip microcomputers 11 (that specifically adopt is 8 single-chip microcomputer W77LE516 of WINBOND).When lettering pen is placed on 7 li of electronics pallet on grooves, tongue tube 8 closures of below, magnet position are arranged on the lettering pen, the electric signal of its output is a low level, and the tongue tube 8 of top, non-magnet position is opened, and the electric signal of its output is a high level.
This look recognition device that is used for electronic blackboard is work like this: when starting working, four lettering pens are placed on respectively in four grooves, and wherein magnet is placed the lettering pen of situation such as Fig. 1 a, and the level of its corresponding tongue tube sensor circuit output is combined as 001; Magnet is placed the lettering pen of situation such as Fig. 1 b, and the level of its corresponding tongue tube sensor circuit output is combined as 010; Magnet is placed the lettering pen of situation such as Fig. 1 c, the level of its corresponding tongue tube sensor circuit output is combined as 011, magnet is placed the lettering pen of situation such as Fig. 1 d, and the level of its corresponding tongue tube sensor circuit output is combined as 000 (wherein 1 represent high level, 0 represents low level).The output level of the tongue tube sensor circuit in each groove is all inequality, just can reach the differentiation lettering pen, thereby reaches the purpose of distinguishing a look.Predefined the corresponding look of level signal combination that processing unit 11 transmits according to each trench bottom tongue tube sensor circuit, be positioned at a look of each groove lettering pen correspondence when judging original state, and note, when picking up lettering pen, the people writes, the level signal of the tongue tube inductor of a trench bottom of this lettering pen correspondence transmission at this moment changes, as having become 111 (when not placing lettering pen in the groove from 001, the level of tongue tube inductor output is 111), processing unit 11 judges which groove is the level signal that changes come from, and discerns a look of the lettering pen correspondence of using according to record before.
Be provided with three positions of placing magnet on lettering pen, can form seven kinds of level combinations, present embodiment has only used wherein four kinds, corresponding to a look of four kinds of lettering pens.The position of more placement magnet can also be set on lettering pen certainly, just can represent a look of more lettering pen.Simultaneously, can also as required the blackboard eraser groove be set on the electronics pallet, to give full play to the effect of electronics pallet.
If a groove compares broad, the induction range that exceeds the tongue tube sensor circuit shown in Fig. 3 a, then can adopt the tongue tube sensor circuit shown in Fig. 3 b, perhaps adopt the tongue tube sensor circuit that comprises more tongue tube arrays, to reach the purpose of the corresponding magnet of induction.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. a look recognition device that is used for electronic blackboard is characterized in that, comprises inductor, induction targets, processing unit;
Described inductor is used to respond to described induction targets, and will respond to the result and be converted into corresponding electric signal and be sent to described processing unit;
Described induction targets is located in the position of setting on the lettering pen, is used to distinguish a look of lettering pen with varying number and distributing position;
Described processing unit is used to handle the electric signal that described inductor transmits, and produces corresponding look recognition result according to the situation of change of described electric signal.
2. according to the described look recognition device that is used for electronic blackboard of claim 1, it is characterized in that a described look recognition device that is used for electronic blackboard comprises that further is provided with at least two electronics pallets of placing a groove of described lettering pen; Each described trench bottom is provided with described inductor accordingly by the position of setting on the described lettering pen, makes it can sense corresponding with it induction targets; Described processing unit is located at described electronics tray bottom, is electrically connected with described inductor.
3. according to claim 1 or 2 a described look recognition device that is used for electronic blackboard, it is characterized in that described inductor is meant the tongue tube sensor circuit; Described induction targets is meant and is arranged in the lettering pen, is distributed in the position set on the lettering pen center line and polarity towards identical magnet.
4. according to the described look recognition device that is used for electronic blackboard of claim 3, it is characterized in that, described tongue tube sensor circuit is connected to form by following mode by tongue tube array, light emitting diode and resistance: described resistance is connected the positive pole of described light emitting diode, and the negative pole of described light emitting diode connects described tongue tube array; The negative pole of described light emitting diode is electrically connected with described processing unit.
5. according to the described look recognition device that is used for electronic blackboard of claim 4, it is characterized in that described tongue tube array is meant two or more tongue tubes in parallel.
6. according to claim 4 or 5 a described look recognition device that is used for electronic blackboard, it is characterized in that, the tongue tube array in the described tongue tube sensor circuit be arranged at described magnet under.
7. according to claim 1 or 4 a described look recognition device that is used for electronic blackboard, it is characterized in that described processing unit is meant 8 single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102206874A CN101515040B (en) | 2008-12-31 | 2008-12-31 | Pen color recognition device for electronic blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102206874A CN101515040B (en) | 2008-12-31 | 2008-12-31 | Pen color recognition device for electronic blackboard |
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| Publication Number | Publication Date |
|---|---|
| CN101515040A CN101515040A (en) | 2009-08-26 |
| CN101515040B true CN101515040B (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102206874A Expired - Fee Related CN101515040B (en) | 2008-12-31 | 2008-12-31 | Pen color recognition device for electronic blackboard |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344125Y (en) * | 1998-08-19 | 1999-10-20 | 杨日明 | Automatic tool selection |
| CN1312519A (en) * | 2000-04-23 | 2001-09-12 | 孙小唐 | Electronic digitalizing read method of mechanical runner counter |
| CN2731554Y (en) * | 2004-07-12 | 2005-10-05 | 金昊 | Intelligent electromagnetic electronic white board |
| CN101042625A (en) * | 2006-03-22 | 2007-09-26 | 深圳市巨龙科教高技术股份有限公司 | Electromagnetic induction interactive electronic white board and system thereof |
-
2008
- 2008-12-31 CN CN2008102206874A patent/CN101515040B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344125Y (en) * | 1998-08-19 | 1999-10-20 | 杨日明 | Automatic tool selection |
| CN1312519A (en) * | 2000-04-23 | 2001-09-12 | 孙小唐 | Electronic digitalizing read method of mechanical runner counter |
| CN2731554Y (en) * | 2004-07-12 | 2005-10-05 | 金昊 | Intelligent electromagnetic electronic white board |
| CN101042625A (en) * | 2006-03-22 | 2007-09-26 | 深圳市巨龙科教高技术股份有限公司 | Electromagnetic induction interactive electronic white board and system thereof |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2007-187973A 2007.07.26 |
| JP特开2007-190164A 2007.08.02 |
| 陈建.激光电子白板的硬件设计与实现.《中国优秀硕博士学位论文全文数据库（硕士）信息科技辑》.2004,(第04期),全文. * |
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| CN101515040A (en) | 2009-08-26 |
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Address after: 510670 Guangdong Province, Guangzhou high tech Industrial Development Zone Kezhu Road No. 233 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 No. 6, color road, hi tech Industrial Development Zone, Guangdong, Guangzhou, China Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |
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Granted publication date: 20110601 Termination date: 20191231 |
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