CN101770314A - Infrared hyphen laser multi-touch screen device and touch and positioning method - Google Patents
Infrared hyphen laser multi-touch screen device and touch and positioning method Download PDFInfo
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- CN101770314A CN101770314A CN200910058018A CN200910058018A CN101770314A CN 101770314 A CN101770314 A CN 101770314A CN 200910058018 A CN200910058018 A CN 200910058018A CN 200910058018 A CN200910058018 A CN 200910058018A CN 101770314 A CN101770314 A CN 101770314A
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Abstract
The invention discloses a multi-touch device with zero-pressure and large-screen as well as a positioning method, which aims to provide a touch screen device supporting multi-touch and a method for identifying and positioning the multi-touch. The infrared hyphen laser multi-touch screen device comprises a transparent touch panel, an infrared hyphen laser, a soft projection screen, an infrared camera, an infrared band pass filter, a projector and a computer. A layer of infrared plane is formed on the touch screen of the infrared hyphen laser, when a finger or other objects are close to the touch screen, the infrared rays on the infrared panel are reflected to form bright points, the bright points are captured by the infrared camera and transmitted pictures to a computer, the computer processes and analyzes the pictures, recognizes the touch event and the position thereof, then invokes a corresponding instruction, makes feedback and generates new pictures, and then projects the new pictures onto the soft projection screen through the projector.
Description
Technical field
The present invention relates to a kind of multi-point touch screen device electronic equipment, this equipment can be distinguished one or more touch point, and can position this one or more touch point.
Background technology
Touching technique is extensive use of in various electronic equipments, being used for operating electronic equipment realizes various functions. in computer application system, touch input and played the function that alternative keyboard and mouse are imported control, make operating process more directly perceived. usually, touch-screen comprises a transparent touch pad that covers the display screen viewing area, controller and corresponding driving software, touch pad is caught touch event, and touch signal is sent to controller, controller is handled signal, then touch event and touch position data are passed to computing machine, computing machine makes an explanation to touch event and makes feedback to this touch event.
Common touching technique has at present: condenser type, resistance-type, ultrasonic type, echelette formula etc. in capacitive technology, touch screen surface covers the hyaline membrane of one deck energy store charge, when touch event took place, the electric charge of touch point can change, by measuring the position that electric charge can determine that touch event takes place; In the technology of resistance-type, there is the layer of transparent conducting film on the surface of touch pad, the transparent resistance tunic that has level and vertical electrode that also has layer of transparent, when touch event is arranged, this two-layer corresponding position can come in contact, by applying voltage in level and vertical direction, obtain representing the voltage output of touch location, measure this voltage and just can obtain position encoded accordingly; It is right by in level and vertical direction infrared receiving/transmission LED being set that echelette touches technology, form crossed grating, when having touch event to take place, some grating is blocked, cause some LED not receive Infrared, just can determine the occurrence positions of touch event by the conducting situation of measuring the infrared reception LED of horizontal and vertical position. judge the problem of touch event occurrence positions when these technology all can not well solve a plurality of touch events and take place simultaneously at present.
In addition, several multiple point touching technology are also arranged at present: wherein a kind of is condenser type, by increasing the lead-in wire of each little capacitor cell on the touch pad, the capacitance variations of each capacitor cell on the senses touch plate then, realize taking place simultaneously on the touch pad but touch event, and each touch event is carried out location determination at diverse location; Another is a condenser type, be by increasing the number of leads of each strain unit on the touch pad equally, judge the position of touch event by the resistance variations of measuring each strain unit. at present, these two kinds of technology only are applicable to undersized touch-screen, if realize the multiple point touching of giant-screen with these present technology, the manufacture difficulty of touch pad is big, the complexity height of control circuit. except that above two kinds of technology, also has a kind of technology, this technology is used the characteristic of the total internal reflection of materials such as acryl, by the infrared LED light belt is set around touch pad, in infrared light irradiation entrance pressure gram force panel, when having touch event to take place, the total internal reflection characteristic of touch pad is destroyed, the touch location place has infrared ray and is reflected, at this moment, infrared camera as for the touch pad below captures the infrared ray that is reflected, then, the picture that camera captures is sent to computer, computer touches image, determine touch point position. the making of this technology and more complicated is set, need the LED light belt, also to be coated with last layer silica gel uniformly on the touch pad, and, touch event needs certain touching intensity and just can take place, and when the pressure of objects such as finger is not enough, occurs the situation that can't judge or disappear in the touch point easily.
In view of the limitation of above-mentioned prior art, provide a kind of and can support the large scale touch-screen, and can realize that the multiple point touching technology of zero pressure seems very necessary.
Summary of the invention
First purpose of the present invention provides a kind of zero pressure, large-sized multi-point touch screen device.
Second purpose of the present invention provides a kind of method of using above-mentioned zero pressure, large scale multi-point touch screen device to realize while multiple point touching event recognition and location determination that goes up.
In order to realize first above-mentioned purpose, be applicable to the technical scheme of finger touch below can adopting
Infrared hyphen laser multi-touch screen device, it comprises:
A transparent touch-sensitive panel;
The soft curtain of projection places the touch-screen below;
A plurality of infrared word laser generators are produced the infrared ray plane;
An infrared camera is positioned at the soft curtain of touch-screen and projection below, and can photographs whole touch screen;
The logical filter of infrared band before the infrared camera camera lens, is used to filter surround lighting;
A projector, this projector are positioned at the back side of touch-screen and the soft curtain of projection, are used for to the soft curtain of projection projects images;
A computing machine, be used to receive the picture that captures of camera, and the picture that receives is carried out Flame Image Process, judge the position that touch event takes place, and touch event analyzed and handles, then the image after handling by projector projects to the soft curtain of projection.
Infrared camera is caught touch event, and signal passed to computing machine, and computing machine is analyzed and is handled these signals, and the identification touch event is also judged the position of touch event, carry out corresponding operation then, again the image after the operation by projector projects to the soft curtain of projection.
In order to realize above-mentioned second purpose, can adopt following method:
This method comprises: infrared camera receives raw image data, this view data comprises the infrared ray bright spot that produces owing to touch event, this method also comprises the pre-service of the infrared ray bright spot data that touch-screen is produced owing to touch event, keep active data, and analyze, with the target of determining to touch. this method also comprises current data and former image is compared, to determine to touch on the touch-screen variable of target.
The present invention realizes that the judgement of multiple point touching event location mainly comprises following steps:
(1) starts computing machine, projector, an infrared camera and an infrared word laser generator;
(2) projector projects the soft curtain of projection with computer-generated image;
(3) touch event takes place, and infrared camera is taken the raw image data on the touch-screen;
(4) infrared camera is passed to computing machine with the view data that photographs, and computing machine carries out noise reduction to raw image data and regulates contrast and handle, and identifies the touch point;
(5) computing machine is made feedback to the touch event of these touch point correspondences, carries out corresponding action and order, and produces new image;
(6) repeating step (2)-(5) begin new circulation.
Adopt infrared hyphen laser multi-touch screen device of the present invention, and use the identification and the position decision method of multiple point touching incident of the present invention, touch panel device just can be discerned a plurality of touch events simultaneously and judge its position; On this basis, variation according to the touch point coordinate position, can identify the direction of motion and the path of each touch point, and give different touch action thus with different functional definitions, such as: if having one to immobilize in two touch points, another position changes, and can carry out convergent-divergent and rotation to picture thus; Touch point is done the waveform motion and then can be defined as and access certain actions menu or the like. and concrete action definition can be provided with as required.
Description of drawings
The present invention further describes by the following drawings, and wherein identical Reference numeral is represented identical structure member:
Fig. 1 is an example structure figure of infrared hyphen laser multi-touch screen device among the present invention.
Fig. 2 is that the touch event of infrared hyphen laser multi-touch screen device among the present invention is caught schematic diagram.
Fig. 3 is the infrared hyphen laser multi-touch screen device image that is seeded into of camera in actual use among the present invention.
Fig. 4 is the image of the touch event input point that obtains after the computing machine in actual use of infrared hyphen laser multi-touch screen device captures camera among the present invention image is analyzed and handled.
Fig. 5 is the process flow diagram of infrared hyphen laser multi-touch screen device embodiment among the present invention.
Fig. 6 is the structural drawing that infrared hyphen laser multi-touch screen device carries out the splicing of super large screen among the present invention.
Fig. 7 is the process flow diagram that infrared hyphen laser multi-touch screen device carries out super large screen splicing embodiment among the present invention.
Embodiment
Embodiment 1:
Fig. 1 is one of them example structure synoptic diagram of the present invention. this device comprises:
A transparent touch-sensitive panel 3;
Four infrared word laser generators 1, optical maser wavelength is 980 nanometers, place four corners of touch-screen 3 respectively, the position that an infrared word laser generator 1 is 1 millimeter high on touch-screen 3 surfaces forms an infrared ray plane 2, when the touch object is pressed close to touch-screen 3 surfaces as finger, infrared ray is pointed reflection, forms infrared ray 2 points;
The soft curtain 4 of projection is affixed on touch-screen 3 belows, is used to accept projector 5 image projected;
An infrared camera 6 is used to catch the bright spot that is formed by the infrared ray of finger reflection, and image is passed to computing machine;
An infrared band leads to filter 7, places the top of infrared camera 6 camera lenses, is used to filter 980 nanometers ambient light in addition, prevents to produce erroneous judgement;
A projector 5 is used for the image projection in the computing machine to the soft curtain 4 of projection.
Fig. 2 is that touch panel device shown in Figure 1 is caught touch event and carried out Positioning Principle figure. an infrared word laser generator 1 forms an infrared ray plane 2 on touch-screen 3 surfaces, when finger is pressed close to touch-screen 3, the infrared ray of touch event occurrence positions is pointed reflection, form the infrared ray bright spot, at this moment, place the infrared camera camera 6 of touch-screen 3 belows to capture bright spot, and image passed to computing machine, computing machine is handled image, analyze and discern the position that touch event and touch event take place, finish identification and location touch event.
Present embodiment is realized the flow process following (referring to Fig. 5) that the multiple point touching incident is caught and judged:
(1) starts computing machine, projector, an infrared camera and an infrared word laser generator 21;
(2) projector projects the soft curtain 22 of projection with computer-generated image;
(3) touch event takes place, and infrared camera is taken the raw image data 23 on the touch-screen;
(4) infrared camera is passed to computing machine with the view data that photographs, and computing machine carries out noise reduction to raw image data and regulates contrast and handle, and identifies touch point 24;
(5) computing machine is made feedback to the touch event of these touch point correspondences, carries out corresponding action and order, and produces new image 25;
(6) repeating step (2)-(5) begin new circulation.
Use infrared hyphen laser multi-touch screen device of the present invention and multi-point touch locating method, can realize various multiple point touching operations.
Embodiment 2:
When single infrared hyphen laser multi-touch screen device can not satisfy the demands, can utilize the infrared word multi-point touch screen device shown in the embodiment 1 to carry out splicing shown in Figure 6.
This oversize infrared hyphen laser multi-touch screen device comprises:
The transparent touch-sensitive panel 3 of an oversize;
Eight infrared word generating lasers 1, optical maser wavelength is 980 nanometers, is used for producing infrared ray plane 2 in the 1 millimeter eminence in oversize touch-screen 3 surfaces;
The soft curtain 4 of oversize projection is affixed on oversize touch-screen 3 belows; A plurality of projector 5, with the image projection cut apart by computing machine to the soft curtain 4 of projection;
Place the logical filter 7 of an infrared band before each camera 6 camera lens, filter out interference light; A plurality of infrared cameras 6 are used to catch touch event, and image is passed to computing machine, and computing machine splices processing to these images, judge the position of touch event and generation thereof, and call command adapted thereto.
All projector 5 and infrared camera 6 are accomplished seamless spliced, just in time cover whole touch screen 3.
Present embodiment is realized the flow process following (referring to Fig. 7) that super large screen multiple point touching incident is caught and judged:
(1) starts computing machine, projector, an infrared camera and an infrared word laser generator 41;
(2) projector projects the soft curtain 42 of projection with computer-generated image;
(3) touch event takes place, and infrared camera is taken the raw image data 43 on the touch-screen;
(4) infrared camera is passed to computing machine 44 with the view data that photographs;
(5) computing machine splices the image that a plurality of infrared cameras obtain, and carries out processing such as noise reduction, identifies touch point 45;
(6) computing machine is made feedback to the touch event of these touch point correspondences, carries out corresponding action and order, and produces new image 46;
(7) computing machine is cut apart image by program, and is sent to respective projection instrument 47;
(8) repeating step (2)-(7) begin new circulation.
Claims (4)
1. multi-point touch screen device, its feature comprises:
A transparent touch-sensitive panel;
One or more infrared word laser generators are used to produce the infrared ray plane;
A projector is used to join in computer picture;
An infrared camera is used to catch touch event;
The logical filter of infrared band is used to filter ambient light interference;
The soft curtain of projection is affixed on the touch-screen below, is used to accept projector projects to image;
A computing machine is used to receive and handle the image that infrared camera captures, and carries out analyzing and processing, then with the image of new production by projector projects to the soft curtain of projection.
Objects such as finger are pressed close to touch-screen, the infrared ray on infrared ray plane is reflected, form bright spot, infrared camera will capture image and pass to computing machine, and computing machine is handled and analyzed image by corresponding software, identification touch event and location, call the corresponding command then, and produce new image, then image is passed to projector, projector to the soft curtain of projection, forms once complete touch operation to newly-generated image projection.
2. multi-point touch screen device, its feature comprises:
A super large touch-screen;
A plurality of infrared word laser generators are owing to produce the infrared ray plane;
Many projector are used to throw computer picture to the soft curtain of projection of corresponding region separately;
A plurality of infrared cameras are owing to catch the touch event of corresponding region separately;
The infrared band of polylith leads to filter, owing to filter the interference of surround lighting to each camera;
The soft curtain of super-large projection is affixed on super large touch-screen below, owing to receive the image of projector projects;
A computing machine, owing to receive and handle the image that a plurality of infrared cameras capture, and splice, handle and analyze, produce new image then, and new images is cut apart, be sent to the respective projection instrument, project the respective regions of the soft curtain of super-large projection.
Objects such as finger are pressed close to the super large touch-screen, the infrared ray on infrared ray plane is reflected, and forms bright spot, and each infrared camera will capture image and pass to computing machine, computing machine splices image by corresponding software, handle and analyze, identification touch event and location are called the corresponding command then, and produce new image, with image segmentation and pass to the respective projection instrument, each projector to the soft curtain of projection, forms once complete touch operation to newly-generated image projection then.
3. the touch panel device of a use shown in claim 1 realized multiple point touching to method, and its feature comprises following steps:
(1) starts computing machine, projector, an infrared camera and an infrared word laser generator 21;
(2) projector projects the soft curtain 22 of projection with computer-generated image;
(3) touch event takes place, and infrared camera is taken the raw image data 23 on the touch-screen;
(4) infrared camera is passed to computing machine with the view data that photographs, and computing machine carries out noise reduction to raw image data and regulates contrast and handle, and identifies touch point 24;
(5) computing machine is made feedback to the touch event of these touch point correspondences, carries out corresponding action and order, and produces new image 25;
(6) repeating step (2)-(5) begin new circulation.
4. the use touch panel device shown in claim 2 is realized the method for multiple point touching, it is characterized in that the splicing of many projector and camera of the soft curtain of super large touch-screen and super-large projection, and implementation step is as follows:
(1) starts computing machine, projector, an infrared camera and an infrared word laser generator 41;
(2) projector projects the soft curtain 42 of projection with computer-generated image;
(3) touch event takes place, and infrared camera is taken the raw image data 43 on the touch-screen;
(4) infrared camera is passed to computing machine 44 with the view data that photographs;
(5) computing machine splices the image that a plurality of infrared cameras obtain, and carries out processing such as noise reduction, identifies touch point 45;
(6) computing machine is made feedback to the touch event of these touch point correspondences, carries out corresponding action and order, and produces new image 46;
(7) computing machine is cut apart image by program, and is sent to respective projection instrument 47;
(8) repeating step (2)-(7) begin new circulation..
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| CN200910058018A CN101770314A (en) | 2009-01-01 | 2009-01-01 | Infrared hyphen laser multi-touch screen device and touch and positioning method |
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| CN200910058018A CN101770314A (en) | 2009-01-01 | 2009-01-01 | Infrared hyphen laser multi-touch screen device and touch and positioning method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976154A (en) * | 2010-07-27 | 2011-02-16 | 苏州瀚瑞微电子有限公司 | Projection touch system |
| CN102012740A (en) * | 2010-11-15 | 2011-04-13 | 中国科学院深圳先进技术研究院 | Man-machine interaction method and system |
| CN102109935A (en) * | 2011-03-30 | 2011-06-29 | 中山佳时光电科技有限公司 | Infrared positioning system and method |
| CN102325411A (en) * | 2011-09-01 | 2012-01-18 | 中国科学院深圳先进技术研究院 | Intelligent desk lamp and interacting method thereof |
| CN103033145A (en) * | 2013-01-08 | 2013-04-10 | 天津锋时互动科技有限公司 | Method and system for identifying shapes of plurality of objects |
| CN103123553A (en) * | 2012-10-16 | 2013-05-29 | 深圳市骄阳数字图像技术有限责任公司 | Multi-touch point image identification interactive system |
| CN103729131A (en) * | 2012-10-15 | 2014-04-16 | 腾讯科技（深圳）有限公司 | Human-computer interaction method and associated equipment and system |
| WO2017028360A1 (en) * | 2015-08-19 | 2017-02-23 | 李江 | Touch control system and touch control table |
| CN106547409A (en) * | 2015-09-16 | 2017-03-29 | 卡西欧计算机株式会社 | Position detecting device and projecting apparatus |
| CN106643831A (en) * | 2016-12-27 | 2017-05-10 | 陕西科技大学 | Device and method for accurately measuring positions and changes of positions in two-dimensional plane |
| CN106708333A (en) * | 2016-12-20 | 2017-05-24 | 哈尔滨拓博科技有限公司 | Space recognition control technology-based control module |
| CN107657642A (en) * | 2017-08-28 | 2018-02-02 | 哈尔滨拓博科技有限公司 | A kind of automation scaling method that projected keyboard is carried out using outside camera |
| CN108572734A (en) * | 2018-04-23 | 2018-09-25 | 哈尔滨拓博科技有限公司 | A kind of gestural control system based on infrared laser associated image |
| CN108874241A (en) * | 2018-07-02 | 2018-11-23 | 大连米乐宏业科技有限公司 | Metope touch-control system based on preschool education |
| CN110069198A (en) * | 2019-03-11 | 2019-07-30 | 清华大学 | A kind of user's interaction platform and customer interaction information identify methods of exhibiting |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976154A (en) * | 2010-07-27 | 2011-02-16 | 苏州瀚瑞微电子有限公司 | Projection touch system |
| CN102012740A (en) * | 2010-11-15 | 2011-04-13 | 中国科学院深圳先进技术研究院 | Man-machine interaction method and system |
| CN102109935A (en) * | 2011-03-30 | 2011-06-29 | 中山佳时光电科技有限公司 | Infrared positioning system and method |
| CN102325411A (en) * | 2011-09-01 | 2012-01-18 | 中国科学院深圳先进技术研究院 | Intelligent desk lamp and interacting method thereof |
| CN103729131A (en) * | 2012-10-15 | 2014-04-16 | 腾讯科技（深圳）有限公司 | Human-computer interaction method and associated equipment and system |
| CN103123553A (en) * | 2012-10-16 | 2013-05-29 | 深圳市骄阳数字图像技术有限责任公司 | Multi-touch point image identification interactive system |
| CN103033145A (en) * | 2013-01-08 | 2013-04-10 | 天津锋时互动科技有限公司 | Method and system for identifying shapes of plurality of objects |
| CN103033145B (en) * | 2013-01-08 | 2015-09-02 | 天津锋时互动科技有限公司 | For identifying the method and system of the shape of multiple object |
| WO2017028360A1 (en) * | 2015-08-19 | 2017-02-23 | 李江 | Touch control system and touch control table |
| CN106547409A (en) * | 2015-09-16 | 2017-03-29 | 卡西欧计算机株式会社 | Position detecting device and projecting apparatus |
| CN106547409B (en) * | 2015-09-16 | 2019-08-06 | 卡西欧计算机株式会社 | Position detecting device and projector |
| CN106708333A (en) * | 2016-12-20 | 2017-05-24 | 哈尔滨拓博科技有限公司 | Space recognition control technology-based control module |
| CN106643831A (en) * | 2016-12-27 | 2017-05-10 | 陕西科技大学 | Device and method for accurately measuring positions and changes of positions in two-dimensional plane |
| CN106643831B (en) * | 2016-12-27 | 2019-05-17 | 陕西科技大学 | The device and method of position and change in location in a kind of precise measurement two-dimensional surface |
| CN107657642A (en) * | 2017-08-28 | 2018-02-02 | 哈尔滨拓博科技有限公司 | A kind of automation scaling method that projected keyboard is carried out using outside camera |
| CN108572734A (en) * | 2018-04-23 | 2018-09-25 | 哈尔滨拓博科技有限公司 | A kind of gestural control system based on infrared laser associated image |
| CN108874241A (en) * | 2018-07-02 | 2018-11-23 | 大连米乐宏业科技有限公司 | Metope touch-control system based on preschool education |
| CN110069198A (en) * | 2019-03-11 | 2019-07-30 | 清华大学 | A kind of user's interaction platform and customer interaction information identify methods of exhibiting |
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Address after: 518057, room 2305, Changhong building, 61 South 12 road, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant after: Zhang Haiyun Address before: 61 mailbox, Changhong building, 518057 South 12 road, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant before: Zhang Haiyun |
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Application publication date: 20100707 |