CN102955618A - Camera shooting type optical multi-touch device - Google Patents
Camera shooting type optical multi-touch device Download PDFInfo
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- CN102955618A CN102955618A CN2011102414760A CN201110241476A CN102955618A CN 102955618 A CN102955618 A CN 102955618A CN 2011102414760 A CN2011102414760 A CN 2011102414760A CN 201110241476 A CN201110241476 A CN 201110241476A CN 102955618 A CN102955618 A CN 102955618A
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- touch
- base plate
- coordinate calculation
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- image acquiring
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Abstract
The invention discloses a camera shooting type optical multi-touch device which comprises a touch base plate, a support, an image acquisition device and a touch coordinate calculation device. An infrared array laser is arranged on the touch base plate, the image acquisition device and the touch coordinate calculation device are disposed on the support and used for acquiring the coordination position of a touch article on the touch base plate, the infrared array laser is embedded in a laser mounting groove which is formed on the touch base plate, and infrared rays emitted by the infrared array laser are closely attached above a touch plane of the touch base plate and cover a touch area of the whole touch base plate. Mounting of the infrared array laser can be completed only by embedding the infrared array laser into the laser mounting groove, mounting of other relevant parts is not needed, and all relevant components can be made in one device and can be conveniently mounted for use on various occasions.
Description
Technical field
The present invention relates to the multipoint-touch-technology field of man-machine interaction, particularly a kind of camera shooting type optical multi-touch device.
Background technology
Along with developing rapidly of infotech, the service ability of computing machine is greatly improved, and how to improve man-machine interaction capabilities and also more and more comes into one's own.Touch technology is directly to touch a kind of technology that computing machine is controlled on the display device surface, allows the user with pointing or other hand-held objects such as directly click, pull, amplify, dwindle at the operation.
Chinese patent CN 101566899 discloses a kind of multi-point touch signal triggering method and system thereof based on linear array laser, as shown in Figure 1, it is parallel and be close to the laser light curtain of screen surface to produce one deck above display screen, produce highlighted luminous point at the place, contact in the time of can making many fingers and pointer contact screen, be converted into the intelligible multi-point touch input of computing machine message; Based on the multi-touch system of this triggering mode, consisted of by computing machine, projector, infrared camera, projection screen, infrared linear array laser, can identify simultaneously and respond the touch-control action of a plurality of contacts.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in prior art:
Need to the Infrared High-Power linear array diode laser all be installed at four jiaos that touch frame in the above-mentioned patent, need to touch the cloth power source line all around of frame, and need corresponding laser mounting structure, more, very inconvenient for a lot of scenes installation restrictions.
Summary of the invention
In order to realize the Fast Installation of camera shooting type optical multi-touch device, make it have versatility in a lot of scenes, the embodiment of the invention provides a kind of camera shooting type optical multi-touch device.Described technical scheme is as follows:
A kind of camera shooting type optical multi-touch device comprises: touch base plate, support, image acquiring device and touch coordinate calculation element; Described touch base plate is provided with infrared linear array diode laser, described image acquiring device and touch coordinate calculation element are arranged on the described support, be used for obtaining the coordinate position that touches object on the described touch base plate, form the laser instrument mounting groove on the described touch base plate, described infrared linear array diode laser is embedded in the described laser instrument mounting groove, and the infrared light that described infrared linear array diode laser sends is close to the top, touch plane of described touch base plate, and covers the touch area of whole touch base plate.
Described laser instrument mounting groove is two, all be arranged at the middle part of described touch base plate, each described laser instrument mounting groove with touch the formed angle [alpha] in plane near 45 °, preferred 45 °, two irradiating angles that are embedded in the infrared linear array diode laser in the described laser instrument mounting groove need to cover whole touch area, in general greater than 90 °.
Described support is arranged at the same side that touches the identical described touch base plate in plane, and the one end removably connects with described touch base plate, and described image acquiring device and touch coordinate calculation element all are fixed in the other end of described support.
Described support is hinged with described touch base plate, and described support can turn perpendicular to the plane internal rotation that touches the place, plane along jointed shaft.
Preferably, described image acquiring device is connected with described bracket by hinges with the touch coordinate calculation element, described image acquiring device and touch coordinate calculation element can be in perpendicular to the plane of touch-surface up and down rotation, behind its location positioning, by a locking device with its locking position.
More preferably, be provided with chute along described stent length direction, the installation end of described image acquiring device and touch coordinate calculation element is arranged in the described chute, and move along described chute, make described image acquiring device and touch coordinate calculation element away from or near described touch base plate, behind described image acquiring device and touch coordinate calculation element location, by locking device with its locking position.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
(1) owing to is provided with the laser instrument mounting groove at the touch base plate, when this device is used in assembling, only need infrared linear array diode laser is embedded in the laser instrument mounting groove and get final product, easy for installation, and only need two infrared linear array diode lasers just can realize the covering of touch-surface, saved cost.
(2) all assemblies all accumulate a device, and support can be close to the placement of touch base plate with it by rotation simultaneously, saves placement space, is convenient to simultaneously trip and carries, and can be installed to very easily in the various occasions and use.
(3) because support can rotate, and image acquiring device and touch coordinate calculation element can slide and rotate at support, the display screen that is adapted to various sizes and installation site that can quite flexible, and adaptability is stronger.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is camera shooting type optical multi-touch device synoptic diagram of the prior art;
Fig. 2 is camera shooting type optical multi-touch device synoptic diagram provided by the invention;
Fig. 3 is camera shooting type optical multi-touch device outboard profile provided by the invention;
Fig. 4 is the rotating structure for supporter synoptic diagram among Fig. 2 provided by the invention;
Fig. 5 is the fixed form of touch coordinate calculation element among the present invention and image acquiring device and slip, rotation synoptic diagram.
Among the figure:
1-touches base plate; The infrared linear array diode laser of 2-; 3-image acquiring device and touch coordinate calculation element;
The 4-support; 5-master control PC; 6-linear array laser range of exposures; 7-touches object.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
As shown in Figures 2 and 3, the objective of the invention is to propose a kind of multi-point touch control apparatus based on infrared linear array laser, this device of See Figure mainly is made of following five parts:
(1) infrared linear array diode laser, this device contain two Infrared High-Power linear array diode lasers, are used for above touching the touch surface plane of base plate very near place to get an infrared light net that is parallel to touch-surface; The irradiating angle of these two infrared linear array diode lasers need to cover whole touch area, and optimized angle is greater than 90 °.
(2) touch base plate, touch base plate and be provided with touch-surface, and provide the installation of all component to support.
Touch base plate have two with level laser instrument mounting groove at an angle, optimized angle is near 45° angle, two infrared linear array diode lasers just embed in the laser instrument mounting groove, so that the light that infrared linear array diode laser sends is pressed close to touch-surface as far as possible, and cover whole touch area.
(3) support
Support one end is fixed on and touches on the base plate, and is positioned at touching the identical side in plane, and the other end is used for fixing touch coordinate calculation element and image acquiring device.According to the actual installation demand, support generally is advisable near 90 ° with the angle that touches base plate.
For so that install more flexibly, applicable more occasion: as shown in Figure 4, support can be selected the fixing mode of hinge with the fixed form that touches base plate, is close on the position that touches base plate so that support can rotate at ordinary times, occupies with the reduction space; When using, reality rotates to again perpendicular on the orientation that touches base plate.
In addition, as shown in Figure 5, the junction of support and touch coordinate calculation element and image acquiring device also can provide and slidably reach spinfunction.Along on the stent length direction chute being set, the installation end of touch coordinate calculation element and image acquiring device is arranged in the chute, so that touch coordinate calculation element and image acquiring device slide before and after can be on support, after sliding into suitable position by locking device with its locking position; Touch coordinate calculation element and image acquiring device also can rotate up and down an angle in perpendicular to the plane of touch-surface, so that it can be operated on the best Image Acquisition angle.
(4) image acquiring device, image acquiring device is fixed on the support with the touch coordinate calculation element.Image acquiring device is made of optical lens, imageing sensor and corresponding hardware control circuit, obtain the image in whole touch-surface zone by high-speed capture, in general, in order to obtain more satisfactory man-machine interaction effect, need to obtain image with the speed that surpasses 50 frame per seconds.
(5) touch coordinate calculation element, when having the object of touch to touch touch-surface, because the light path of having blocked infrared laser, this laser can shine this object, produces a bright spot, and this bright spot can be imaged in the image acquiring device.The touch coordinate calculation element goes out corresponding coordinate according to the image calculation that obtains.Deliver to master control PC by corresponding interface behind this coordinate and the object of which movement coordinate matching before.
The invention described above embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a camera shooting type optical multi-touch device comprises: touch base plate, support, image acquiring device and touch coordinate calculation element; Described touch base plate is provided with infrared linear array diode laser, and described image acquiring device and touch coordinate calculation element are arranged on the described support, is used for obtaining the coordinate position that touches object on the described touch base plate, it is characterized in that,
Form the laser instrument mounting groove on the described touch base plate, described infrared linear array diode laser is embedded in the described laser instrument mounting groove, and the infrared light that described infrared linear array diode laser sends is close to the top, touch plane of described touch base plate, and covers the touch area of whole touch base plate.
2. camera shooting type optical multi-touch device according to claim 1 is characterized in that,
Described laser instrument mounting groove arranges two, all be arranged at the middle part of described touch base plate, each described laser instrument mounting groove is 45 ° with touching the formed angle [alpha] in plane, and two irradiating angles that are embedded in the infrared linear array diode laser in the described laser instrument mounting groove are greater than 90 °.
3. camera shooting type optical multi-touch device according to claim 2 is characterized in that,
Described support is arranged at the same side that touches the identical described touch base plate in plane, and the one end removably connects with described touch base plate, and described image acquiring device and touch coordinate calculation element all are fixed in the other end of described support.
4. camera shooting type optical multi-touch device according to claim 3 is characterized in that,
Described support is hinged with described touch base plate, and described support can turn perpendicular to the plane internal rotation that touches the place, plane along jointed shaft.
5. arbitrary described camera shooting type optical multi-touch device is characterized in that according to claim 1-4,
Described image acquiring device is connected with described bracket by hinges with the touch coordinate calculation element, described image acquiring device and touch coordinate calculation element can rotate up and down in perpendicular to the plane of touch-surface, behind its location positioning, by a locking device with its locking position.
6. arbitrary described camera shooting type optical multi-touch device is characterized in that according to claim 1-4,
Be provided with chute along described stent length direction, the installation end of described image acquiring device and touch coordinate calculation element is arranged in the described chute, and move along described chute, make described image acquiring device and touch coordinate calculation element away from or near described touch base plate, behind described image acquiring device and touch coordinate calculation element location, by locking device with its locking position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241476.0A CN102955618B (en) | 2011-08-22 | 2011-08-22 | A kind of camera shooting type optical multi-touch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241476.0A CN102955618B (en) | 2011-08-22 | 2011-08-22 | A kind of camera shooting type optical multi-touch device |
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| Publication Number | Publication Date |
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| CN102955618A true CN102955618A (en) | 2013-03-06 |
| CN102955618B CN102955618B (en) | 2016-04-20 |
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| CN201110241476.0A Expired - Fee Related CN102955618B (en) | 2011-08-22 | 2011-08-22 | A kind of camera shooting type optical multi-touch device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076989A (en) * | 2013-03-25 | 2014-10-01 | 南京瓦迪电子科技有限公司 | Optical multi-touch device, touch frame and touch implementation method |
| CN105514766A (en) * | 2016-02-29 | 2016-04-20 | 北京仁光科技有限公司 | Large-angle uniform line laser sector modulation device |
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| US7427983B1 (en) * | 2002-06-02 | 2008-09-23 | Steelcase Development Corporation | Visual communication system |
| CN101566899A (en) * | 2009-05-27 | 2009-10-28 | 清华大学 | Multi-point triggering method and system based on linear array laser |
| CN101872254A (en) * | 2009-04-24 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Portable handwriting input device |
| CN101872255A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Infrared handwritten pen and handwritten input device with same |
| CN101872268A (en) * | 2009-04-21 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Touch control device |
| CN201934871U (en) * | 2010-11-29 | 2011-08-17 | 江苏红叶视听器材股份有限公司 | Lifting device for projection and positioning of electronic white board |
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2011
- 2011-08-22 CN CN201110241476.0A patent/CN102955618B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7427983B1 (en) * | 2002-06-02 | 2008-09-23 | Steelcase Development Corporation | Visual communication system |
| CN101872268A (en) * | 2009-04-21 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Touch control device |
| CN101872254A (en) * | 2009-04-24 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Portable handwriting input device |
| CN101872255A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Infrared handwritten pen and handwritten input device with same |
| CN101566899A (en) * | 2009-05-27 | 2009-10-28 | 清华大学 | Multi-point triggering method and system based on linear array laser |
| CN201934871U (en) * | 2010-11-29 | 2011-08-17 | 江苏红叶视听器材股份有限公司 | Lifting device for projection and positioning of electronic white board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104076989A (en) * | 2013-03-25 | 2014-10-01 | 南京瓦迪电子科技有限公司 | Optical multi-touch device, touch frame and touch implementation method |
| CN104076989B (en) * | 2013-03-25 | 2017-06-13 | 南京瓦迪电子科技有限公司 | A kind of optical multi-touch device, touch frame and the method for realizing touch-control |
| CN105514766A (en) * | 2016-02-29 | 2016-04-20 | 北京仁光科技有限公司 | Large-angle uniform line laser sector modulation device |
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| CN102955618B (en) | 2016-04-20 |
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