CN203054795U - Infrared electronic whiteboard system capable of distinguishing infrared pen emission signals - Google Patents
Infrared electronic whiteboard system capable of distinguishing infrared pen emission signals Download PDFInfo
- Publication number
- CN203054795U CN203054795U CN 201220723489 CN201220723489U CN203054795U CN 203054795 U CN203054795 U CN 203054795U CN 201220723489 CN201220723489 CN 201220723489 CN 201220723489 U CN201220723489 U CN 201220723489U CN 203054795 U CN203054795 U CN 203054795U
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- infrared
- pen
- electronic whiteboard
- circuit
- receiving tubes
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Abstract
The utility model provides an infrared electronic whiteboard system capable of distinguishing infrared pen emission signals. The infrared electronic whiteboard system an infrared electronic whiteboard main body, two infrared receiving tubes and an infrared pen, wherein the two infrared receiving tubes are respectively arranged at the positions of two vertex angles, the two vertex angles are in opposite angle relation, and the two infrared receiving tubes are connected with a microcontroller of the infrared electronic whiteboard main body through infrared receiving circuits. The infrared pen comprises a pen shell at least provided with a key. A power supply circuit, a coding emission circuit, a signal emission circuit and an infrared emission tube which are sequentially connected are arranged in the pen shell. The key is connected with the coding emission circuit through a key circuit. The infrared receiving tubes are arranged at the vertex angles in the opposite angle relation. Thus, when different keys on the infrared pen are pressed, signals of different frequencies are emitted to be received by the infrared receiving tubes, and the signals are actuated by the microcontroller to carry out corresponding function operation.
Description
[technical field]
The utility model relates to a kind of infrared interactive electric whiteboard, and particularly a kind of have an infrared type electric whiteboard system that the infrared pen of identification transmits.
[background technology]
Traditional infrared interactive electric whiteboard is only supported the operation of writing of finger touch and common lettering pen, its principle is that the principle of work of infrared interactive electric whiteboard is that side at electronic whiteboard all arranges a circuit board, row infrared transmitting tube or the infrared receiving tube of arranging on the described circuit board, the arrange circuit board of infrared transmitting tube and the circuit board of infrared receiving tube of arranging is oppositely arranged, and forms a light net that is covered with by infrared ray.When any object enters the infrared light net, object will stop the infrared ray emission and reception in somewhere, the ultrared intensity that the reception infrared tube of the both direction anyhow at this place receives will change, and analyzes the variation of infrared ray reception condition by the microcontroller of infrared interactive electric whiteboard inside and just can determine the touch point.When adopting lettering pen to write, it determines that the principle of writing position is the same with finger touch.
When operations such as the user need amplify picture, moves, rotation, just can only realize by Gesture Recognition.And in identification gesture process, usually be difficult to very correctly identification, therefore often cause the controller misoperation.Amplification or the rotation for picture simultaneously often needs 2 compounding practices to realize, for tutoring system, when running into non-operational requirements of writing, existing infrared interactive electric whiteboard just can't satisfy, so for the user, convenience weakens greatly.
[summary of the invention]
The technical problems to be solved in the utility model is to provide a kind of infrared type electric whiteboard system that the infrared pen of identification transmits that has.
The utility model is achieved in that
Has the infrared type electric whiteboard system that the infrared pen of identification transmits, comprise an infrared type electronic whiteboard body, two infrared receiving tubes and an infrared pen, described two infrared receiving tubes are located at two corner positions of described infrared type electronic whiteboard body respectively, and the paired angular dependence of described two drift angles, described two infrared receiving tubes all connect the microcontroller of infrared type electronic whiteboard body by infrared receiving circuit, described infrared pen comprises a shell, at least be provided with a button on described the shell, be provided with the power circuit that connects successively in described the shell, encoding transmitting circuit, signal transmission circuit and infrared transmitting tube, described button connects described encoding transmitting circuit by key circuit.
Further, the quantity of described button is four, and all connects described key circuit.
Advantage of the present utility model is: by two summits that are diagonal position at infrared type electronic whiteboard body infrared receiving tube is set, when infrared upward different key is pressed, send the signal of different frequency, after infrared receiving tube receives, resolve the back by microcontroller and carry out controlling of corresponding function, the utility model antijamming capability is strong simultaneously, the reliability height.
[description of drawings]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
[embodiment]
See also illustrated in figures 1 and 2ly, embodiment of the present utility model is described in detail.
Has the infrared type electric whiteboard system that the infrared pen of identification transmits, comprise an infrared type electronic whiteboard body 1, two infrared receiving tubes 2 and an infrared pen 3, described two infrared receiving tubes 2 are located at two corner positions of described infrared type electronic whiteboard body 1 respectively, and the paired angular dependence of described two drift angles, described two infrared receiving tubes 2 all connect the microcontroller 5 of infrared type electronic whiteboard body 1 by infrared receiving circuit 4, described infrared pen 3 comprises a shell 31, at least be provided with a button 6 on described the shell 31, be provided with the power circuit 7 that connects successively in described the shell 31, encoding transmitting circuit 8, signal transmission circuit 9 and infrared transmitting tube 10, described button 6 connects described encoding transmitting circuit 8 by key circuit 11.In the present embodiment, the quantity of described button 6 is four, and all connects described key circuit 11.The signal of four kinds of different wave lengths of this four button emissions is with corresponding right mouse button function, holder shifting function, enlarging function, the spinfunction of realizing of four buttons, 6 difference.
Principle of work of the present utility model is:
When the button 6 on the infrared pen 3 is not pressed, the infrared transmitting tube 10 of infrared pen 3 can not launched signal, can normally write at electronic whiteboard, when certain button 6 of infrared pen 3 is pressed, launched by infrared transmitting tube 10 again behind the encoding transmitting circuit 8 on the infrared pen 3 of this key assignments information via and the signal transmission circuit 9.Two infrared receiving tubes 2 that this signal is installed on the infrared type electronic whiteboard body 1 receive, and this signal is passed to microcontroller 5 through infrared receiving circuit 4, and the key assignments information that microcontroller 5 obtains pressing after decoding is carried out the operation of response.The coded system of key assignments information can adopt the infrared remote-controlled signal code format, formed by several sections such as preamble code, systematic code, system's radix-minus-one complement, numeric data code, data radix-minus-one complements, preamble code is represented the start-up portion of one section code, can be formed by a time long high level and a low level, systematic code is in order to distinguishing different system, and radix-minus-one complement can be used for error correction.
Need to prove: the wavelength of the infrared transmitting tube 10 on the wavelength of this infrared receiving tube 2 and the infrared pen 3 is corresponding, not corresponding with the wavelength of reception diode on the infrared type electronic whiteboard body 1, and away from very, be conducive to reduce the interference that 3 pairs of infrared type electronic whiteboard bodies of infrared pen 1 receive signal like this.For example at infrared type electronic whiteboard body 1 two infrared receiving tubes 2 that wavelength is 850nm are installed, at infrared pen 3 infrared transmitting tube 10 that the emission wavelength that matches with it is 850nm is installed, in the infrared type electronic whiteboard body 1 over against power valve and the wavelength of infrared tube then be 940nm, so just can avoid the phase mutual interference.
The utility model arranges infrared receiving tube by two summits that are diagonal position at infrared type electronic whiteboard body, when infrared upward different key is pressed, send the signal of different frequency, after infrared receiving tube receives, resolve the back by microcontroller and carry out controlling of corresponding function, the utility model antijamming capability is strong simultaneously, the reliability height.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented according to this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (2)
1. has the infrared type electric whiteboard system that the infrared pen of identification transmits, it is characterized in that: comprise an infrared type electronic whiteboard body, two infrared receiving tubes and an infrared pen, described two infrared receiving tubes are located at two corner positions of described infrared type electronic whiteboard body respectively, and the paired angular dependence of described two drift angles, described two infrared receiving tubes all connect the microcontroller of infrared type electronic whiteboard body by infrared receiving circuit, described infrared pen comprises a shell, at least be provided with a button on described the shell, be provided with the power circuit that connects successively in described the shell, encoding transmitting circuit, signal transmission circuit and infrared transmitting tube, described button connects described encoding transmitting circuit by key circuit.
2. according to claim 1 have an infrared type electric whiteboard system that the infrared pen of identification transmits, and it is characterized in that: the quantity of described button is four, and all connects described key circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723489 CN203054795U (en) | 2012-12-24 | 2012-12-24 | Infrared electronic whiteboard system capable of distinguishing infrared pen emission signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723489 CN203054795U (en) | 2012-12-24 | 2012-12-24 | Infrared electronic whiteboard system capable of distinguishing infrared pen emission signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054795U true CN203054795U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220723489 Expired - Fee Related CN203054795U (en) | 2012-12-24 | 2012-12-24 | Infrared electronic whiteboard system capable of distinguishing infrared pen emission signals |
Country Status (1)
| Country | Link |
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| CN (1) | CN203054795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527775A (en) * | 2016-11-23 | 2017-03-22 | 广州视源电子科技股份有限公司 | Interactive device and trajectory generation method and device |
-
2012
- 2012-12-24 CN CN 201220723489 patent/CN203054795U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527775A (en) * | 2016-11-23 | 2017-03-22 | 广州视源电子科技股份有限公司 | Interactive device and trajectory generation method and device |
| WO2018094835A1 (en) * | 2016-11-23 | 2018-05-31 | 广州视睿电子科技有限公司 | Interaction device, and track generation method and apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20181224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |