CN102902422A - Multi-point touch system and method - Google Patents
Multi-point touch system and method Download PDFInfo
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- CN102902422A CN102902422A CN2012103154337A CN201210315433A CN102902422A CN 102902422 A CN102902422 A CN 102902422A CN 2012103154337 A CN2012103154337 A CN 2012103154337A CN 201210315433 A CN201210315433 A CN 201210315433A CN 102902422 A CN102902422 A CN 102902422A
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Abstract
The invention discloses a multi-point touch system comprising a touch screen, a driving module, a signal receiving module and a processor, wherein the touch screen comprises a plurality of infrared transmitting lamps and a plurality of infrared receiving lamps sequentially arranged around a screen body at intervals; the infrared transmitting lamps transmit infrared light under the action of the driving module; the infrared light receiving lamps in a transmitting angle of the infrared transmitting lamps receive the infrared; the signal receiving module acquires receiving signals in the transmitting angle of the infrared transmitting lamps; the processor receives the receiving signals transmitted by the signal receiving module and carries out data analysis; and the processor outputs the analysis data to a computer, the positions of touch points are finally acquired, and operation commands corresponding to the touch points are executed according to the programs preset in the computer. The system supports the touch of 256 points at most, and is high in touch response speed, wide in adapting size and low in power consumption.
Description
Technical field
The present invention relates to the touching technique field, relate in particular to multi-point touch system and method.
Background technology
Along with the development of science and technology, little of mobile phone, panel computer, arrive greatly the application that all-in-one and electronic whiteboard screen all be unable to do without touching technique.And at present all application of oneself support touching technique of each operating system, especially WINDOWS8 operating system is used as multiple point touching one of its major function that newly pushes away especially.But the product of the application touching technique that oneself has on the market now, mostly can only realize single-point or touch at 2, oneself does not catch up with the developing steps of software far away, and most infrared touch panel adopts the technology that transmits and receives one to one in the market, can't accomplish the coordinate setting to a plurality of touch points.
Summary of the invention
Fundamental purpose of the present invention provides a kind of multi-point touch system and method, is intended to realize the meter multiple point touching and write.
The invention provides a kind of multi-point touch system, comprising:
Touch-screen, comprise the screen body, be arranged in a plurality of infrared discharge lamps and a plurality of infrared receiving light around the described screen body in turn, described infrared discharge lamps and described infrared receiving light are spaced, and the infrared light of described infrared discharge lamps emission can be received by a plurality of infrared receiving light in its emission angle;
Driver module is connected in described infrared discharge lamps, is used for driving described infrared discharge lamps emission infrared light;
Signal receiving module is connected in described infrared receiving light, is used for gathering the reception signal of a plurality of infrared receiving lights in the described infrared discharge lamps emission angle;
Processor is connected in described driver module and described signal receiving module, orders about described driver module work and the reception signal of described signal receiving module transmission is carried out data analysis.
Preferably, the spacing distance between adjacent described infrared discharge lamps and the described infrared receiving light is 6mm.
Preferably, described screen body is of a size of 23 ~ 130 inches.
Preferably, described processor comprises data analysis module, receives the reception signal that described signal receiving module gathers, and described reception signal is converted to the touch point coordinate data.
Preferably, described multi-point touch system also comprises the USB interface that connects computing machine, is used for for described processor and computer communication, and the coordinate data of touch point is sent to described computing machine.
The present invention also provides a kind of multi-point touch method, and based on above-mentioned multi-point touch system, this multi-point touch method may further comprise the steps:
After step S10, processor power on, by driver module, drive corresponding infrared discharge lamps emission infrared light;
Infrared receiving light in step S11, the infrared discharge lamps emission angle will receive infrared light;
Step S12, signal receiving module gather the reception signal in the described infrared discharge lamps emission angle, and send it to described processor;
Step S13, described processor receive the reception signal that signal receiving module sends, and it is carried out data analysis, and analysis result is exported.
Preferably, described step S10 is specially:
After processor powers on, drive successively infrared discharge lamps emission infrared light by driver module, and change step S11 over to.
Preferably, described step S13 is specially: described processor is converted to the touch point coordinate data with the reception signal of described infrared receiving light transmission.
Preferably, among the described step S13 reception signal of infrared receiving light transmission being converted to the touch point coordinate data is specially:
If the infrared discharge lamps of emission infrared light is initial point and sets up coordinate system, X-axis and Y-axis are by described initial point and be parallel to described screen body two adjacent edge frames, the infrared light that described infrared discharge lamps is launched is stopped by first touch point and can not be received by corresponding infrared receiving light, this touch point coordinate is (i, j), and X-axis and Y-axis are positive dirction towards this touch point direction, and this moment, described data analysis module with the mathematical model that the reception signal of described infrared receiving light transmission is converted to the touch point coordinate data was:
ρ=i·cosθ+j·sinθ
In the formula, ρ be initial point to the distance of touch point, i is the X coordinate of touch point, j is the Y coordinate of touch point, θ is the angle of ρ and X-axis; Can draw the ρ value according to described mathematical model.
Preferably, described multi-point touch system gathers simultaneously the touch signal of 256 touch points and draws its coordinate data.
Multi-point touch system of the present invention comprises touch-screen, driver module, signal receiving module, processor, and described touch-screen comprises a plurality of infrared discharge lamps and a plurality of infrared receiving light that is spaced in turn around described screen body; Described infrared discharge lamps is launched infrared light under the driver module effect; Infrared receiving light in the described infrared discharge lamps emission angle receives infrared light; Described signal receiving module gathers the reception signal in the described infrared discharge lamps emission angle; Described processor receives the reception signal that described signal receiving module transmits, and goes forward side by side line number according to one's analysis; Described processor will be analyzed data and be passed to computing machine.The present invention utilizes an infrared lamp emission infrared light, and received by many in its emission angle infrared receiving lights, and can be according to for several times emission and the reception signal after receiving draw the coordinate data of a plurality of touch points and it is positioned, thereby carry out operational order corresponding to described touch point according to predefined program in the computing machine.
Description of drawings
Fig. 1 be on the touch-screen of multi-point touch system of the present invention in infrared discharge lamps emission infrared light and the emission angle thereof many infrared receiving lights receive the infrared light schematic diagram;
Fig. 2 is the structural representation of multi-point touch system one embodiment of the present invention;
Fig. 3 is the process flow diagram of multi-point touch method one embodiment of the present invention;
Fig. 4 is that data analysis module of the present invention is set up mathematical model one embodiment schematic diagram.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Further specify technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1 and Fig. 2, Fig. 1 be on the touch-screen of multi-point touch system of the present invention in infrared discharge lamps emission infrared light and the emission angle thereof many infrared receiving lights receive the infrared light schematic diagram, Fig. 2 is the structural representation of multi-point touch system one embodiment of the present invention.The invention provides a kind of multi-point touch system 1, it comprises:
Touch-screen 10, comprise screen body 101, be arranged in a plurality of infrared discharge lamps 102 and a plurality of infrared receiving light 103 around the described screen body 101 in turn, described infrared discharge lamps 102 is spaced with described infrared receiving light 103, and the infrared light of described infrared discharge lamps 102 emissions can be received by a plurality of infrared receiving light 103 in its emission angle;
Adjacent described infrared discharge lamps 102 and the spacing distance between the described infrared receiving light 103 are 6mm in the present embodiment; And described screen body 101 is of a size of 23 ~ 130 inches, adapts to range of size wide.
Further, described processor 40 comprises the data analysis module (not shown), receives the reception signal that described signal receiving module 30 gathers, and described reception signal is converted to touch point 104 coordinate datas.
Described multi-point touch system 1 also comprises the USB interface 50 that connects computing machine 2, be used for for described processor 40 and computing machine 2 communications, the coordinate data of touch point 104 is sent to described computing machine 2, described USB interface 50 connects described computing machine 2 and drives described multi-point touch system 1 for plugged simultaneously, and is easy to connect and low in energy consumption.
Referring to figs. 1 through Fig. 4, Fig. 3 is the process flow diagram of multi-point touch method one embodiment of the present invention; Fig. 4 is that data analysis module of the present invention is set up mathematical model one embodiment schematic diagram.As shown in Figure 3, the present invention also provides a kind of multi-point touch method, and based on above-mentioned multi-point touch system 1, this multi-point touch method may further comprise the steps:
After step S10, processor 40 power on, by driver module 20, drive corresponding infrared discharge lamps 102 emission infrared lights;
Infrared receiving light 103 in step S11, infrared discharge lamps 102 emission angles will receive infrared light;
The reception signal that step S12, signal receiving module 30 gather in described infrared discharge lamps 102 emission angles, and send it to described processor 40;
Step S13, described processor 40 receive the reception signal that signal receiving module 30 sends, and it is carried out data analysis, and analysis result is exported.
Further, described step S10 is specially:
After processor 40 powers on, drive successively infrared discharge lamps 102 emission infrared lights by driver module 20, and change step S11 over to.
By described multi-point touch method, the reception signal that can utilize 40 pairs of described signal receiving modules 30 of processor to gather carries out data analysis, and draw the coordinate data of a plurality of touch points 104 and it is positioned, thereby carry out the touch operation of corresponding touch point 104 or write by computing machine 2 preset programs.
Described step S13 is specially: the reception signal that described processor 40 transmits described infrared receiving light 103 is converted to touch point 104 coordinate datas.As shown in Figure 4, the reception signal that among the described step S13 infrared receiving light 103 is transmitted is converted to touch point 104 coordinate datas and is specially:
If the infrared discharge lamps 102 of emission infrared light is for initial point and set up coordinate system, X-axis and Y-axis are by described initial point and be parallel to 101 liang of adjacent edge frames of described screen body, the infrared light that described infrared discharge lamps 102 is launched is stopped by first touch point 104 and can not be received by corresponding infrared receiving light 103, these touch point 104 coordinates are (i, j), and X-axis and Y-axis are positive dirction towards these touch point 104 directions, and the mathematical model that the reception signal that this moment, described data analysis module (not shown) was transmitted described infrared receiving light 103 is converted to touch point 104 coordinate datas is:
ρ=i·cosθ+j·sinθ
In the formula, ρ be initial point to the touch point 104 distance, i is the X coordinate of touch point 104, j is the Y coordinate of touch point 104, θ is the angle of ρ and X-axis; Can draw the ρ value according to described mathematical model, thereby obtain the accurate coordinate data of touch point 104, coordinate data is passed to computing machine 2, described computing machine 2 can accurately be carried out operational order corresponding to touch point according to predefined program.
Described multi-point touch system 1 can gather simultaneously at most the touch signal of 256 touch points 104 and draw its coordinate data.
The present invention supports can reach at most 256 multiple point touching technology by the multi-point touch system 1 that comprises touch-screen 10, driver module 20, signal receiving module 30, processor 40.Described touch-screen 10 comprises a plurality of infrared discharge lamps 102 and a plurality of infrared receiving light 103 that is spaced in turn around described screen body 101, described infrared discharge lamps 102 is launched infrared light under described driver module 20 effects, infrared receiving light 103 in described infrared discharge lamps 102 emission angles receives infrared light, the reception signal that described signal receiving module 30 gathers in described infrared discharge lamps 102 emission angles, described processor 40 receives the reception signal that described signal receiving module 30 transmits, and goes forward side by side line number according to one's analysis; Described processor 40 will be analyzed data and export computing machine 2 to, finally obtain 104 positions, touch point and carry out the operational order of described touch point 104 correspondences according to computing machine 2 interior predefined programs.The present invention supports can reach at most 256 touch, and it is fast to touch reaction velocity, adapts to size wide, low in energy consumption.
The above only is the preferred embodiments of the present invention; be not so limit its claim; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. a multi-point touch system is characterized in that, comprising:
Touch-screen, comprise the screen body, be arranged in a plurality of infrared discharge lamps and a plurality of infrared receiving light around the described screen body in turn, described infrared discharge lamps and described infrared receiving light are spaced, and the infrared light of described infrared discharge lamps emission can be received by a plurality of infrared receiving light in its emission angle;
Driver module is connected in described infrared discharge lamps, is used for driving described infrared discharge lamps emission infrared light;
Signal receiving module is connected in described infrared receiving light, is used for gathering the reception signal of a plurality of infrared receiving lights in the described infrared discharge lamps emission angle;
Processor is connected in described driver module and described signal receiving module, orders about described driver module work and the reception signal of described signal receiving module transmission is carried out data analysis.
2. multi-point touch system according to claim 1 is characterized in that, the spacing distance between adjacent described infrared discharge lamps and the described infrared receiving light is 6mm.
3. multi-point touch system according to claim 1 is characterized in that, described screen body is of a size of 23 ~ 130 inches.
4. according to claim 1 to the described multi-point touch system of 3 any one, it is characterized in that, described processor comprises data analysis module, receives the reception signal that described signal receiving module gathers, and described reception signal is converted to the touch point coordinate data.
5. multi-point touch system according to claim 4 is characterized in that, described multi-point touch system also comprises the USB interface that connects computing machine, is used for for described processor and computer communication, and the coordinate data of touch point is sent to described computing machine.
6. a multi-point touch method is characterized in that, based on multi-point touch system claimed in claim 1, this multi-point touch method may further comprise the steps:
After step S10, processor power on, by driver module, drive corresponding infrared discharge lamps emission infrared light;
Infrared receiving light in step S11, the infrared discharge lamps emission angle will receive infrared light;
Step S12, signal receiving module gather the reception signal in the described infrared discharge lamps emission angle, and send it to described processor;
Step S13, described processor receive the reception signal that signal receiving module sends, and it is carried out data analysis, and analysis result is exported.
7. multi-point touch method according to claim 6 is characterized in that, described step S10 is specially:
After processor powers on, drive successively infrared discharge lamps emission infrared light by driver module, and change step S11 over to.
8. multi-point touch method according to claim 7 is characterized in that, described step S13 is specially: described processor is converted to the touch point coordinate data with the reception signal of described infrared receiving light transmission.
9. multi-point touch method according to claim 8 is characterized in that, among the described step S13 reception signal of infrared receiving light transmission is converted to the touch point coordinate data and is specially:
If the infrared discharge lamps of emission infrared light is initial point and sets up coordinate system, X-axis and Y-axis are by described initial point and be parallel to described screen body two adjacent edge frames, the infrared light that described infrared discharge lamps is launched is stopped by first touch point and can not be received by corresponding infrared receiving light, this touch point coordinate is (i, j), and X-axis and Y-axis are positive dirction towards this touch point direction, and with the mathematical model that the reception signal of described infrared receiving light transmission is converted to the touch point coordinate data be this moment:
ρ=i·cosθ+j·sinθ
In the formula, ρ be initial point to the distance of touch point, i is the X coordinate of touch point, j is the Y coordinate of touch point, θ is the angle of ρ and X-axis; Can draw the ρ value according to described mathematical model.
10. multi-point touch method according to claim 9 is characterized in that, described multi-point touch system gathers simultaneously the touch signal of 256 touch points and draws its coordinate data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103154337A CN102902422A (en) | 2012-08-30 | 2012-08-30 | Multi-point touch system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103154337A CN102902422A (en) | 2012-08-30 | 2012-08-30 | Multi-point touch system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947301A (en) * | 2019-03-19 | 2019-06-28 | 深圳市康冠商用科技有限公司 | Touch localization method and relevant apparatus in a kind of infrared touch frame |
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| US5162783A (en) * | 1990-07-23 | 1992-11-10 | Akzo N.V. | Infrared touch screen device for a video monitor |
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| CN109947301A (en) * | 2019-03-19 | 2019-06-28 | 深圳市康冠商用科技有限公司 | Touch localization method and relevant apparatus in a kind of infrared touch frame |
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Application publication date: 20130130 |