CN103530000A - Touch screen positioning device and method - Google Patents
Touch screen positioning device and method Download PDFInfo
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- CN103530000A CN103530000A CN201310479042.3A CN201310479042A CN103530000A CN 103530000 A CN103530000 A CN 103530000A CN 201310479042 A CN201310479042 A CN 201310479042A CN 103530000 A CN103530000 A CN 103530000A
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Abstract
The invention provides a touch screen positioning device. The touch screen positioning device comprises a screen frame, wherein the screen frame is arranged on a touch screen in a sleeved mode, and the surface of the inner side of the screen frame contains a layer of ultrasonic absorption material. The touch screen positioning device further comprises at least one ultrasonic detection device, wherein the ultrasonic detection device is arranged on one of the top points of the touch screen in a rotatable mode, the ultrasonic detection device is connected with a control system of the touch screen, and the control system is used for obtaining the coordinate of a touch point according to the touch point distance detected by the ultrasonic detection device and the rotating angle of the ultrasonic detection device. The invention further provides a touch screen positioning method, and according to the touch screen positioning method, the super-large touch screen can be rapidly positioned, and the cost is low.
Description
Technical field
The present invention relates to touch screen technology field, particularly relate to a kind of touch-screen locating device, and touch-screen localization method.
Background technology
Conventionally touch-screen localization method has: electric capacity, resistance, infrared, the first-class localization method of making a video recording, but it is very large to adopt the touch-screen of these touch-screen localization methods all cannot accomplish, generally at several cun to tens cun of left and right.At present, for small size touch-screen, what generally adopt is that touch screens or capacitance touch screen carry out location, touch point, if touch screens and capacitance plate are designed to giant-screen, its cost can be very high; And large-sized be generally to adopt camera or infrared frame to position, but positioning precision is poor, touch point response is slower.
Summary of the invention
Based on this, the invention provides a kind of touch-screen locating device and localization method, can realize the quick location of super large touch-screen, and with low cost.
A locating device, comprises the mask being set on touch-screen, wherein,
Described mask inner surface contains one deck ultrasound wave absorbing material;
Also comprise at least one ultrasonic detection device, described ultrasonic detection device is rotating to be arranged on one of them summit of described touch-screen;
Described ultrasonic detection device is connected with the control system of described touch-screen, and described control system, for the touch point distance that detects according to ultrasonic detection device and the rotational angle of described ultrasonic detection device, obtains the coordinate of described touch point.
A localization method, comprises the steps:
The ultrasonic detection device that control is arranged on place, touch-screen summit carrys out back rotation around described summit;
Obtain ultrasonic detection device that gather with distance touch point, and the rotational angle of described ultrasonic detection device;
According to described distance and rotational angle, obtain the coordinate of described touch point.
Above-mentioned touch-screen locating device and localization method, ultrasonic detection device is rotating to be arranged on one of them summit of touch-screen, ultrasonic detection device can carry out back rotation around summit, while being therefore touched on touch-screen, barrier on touch point can be detected at once to the distance of ultrasonic detection device, rotational angle while barrier being detected in conjunction with ultrasonic detection device again, can obtain the coordinate of touch point; One of ultrasonic detection device operated by rotary motion can meet the detection needs of whole touch-screen, and hyperacoustic directive property is strong, distant at Propagation, and therefore the touch-screen for oversize also can guarantee accuracy of detection; The cost of apparatus of the present invention is lower, can realize the quick location of super large touch-screen.
Accompanying drawing explanation
Fig. 1 is touch-screen locating device of the present invention structural representation in one embodiment.
Fig. 2 is touch-screen localization method of the present invention schematic flow sheet in one embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, be the structural representation of touch-screen locating device of the present invention, comprise the mask 110 being set on touch-screen 11, wherein,
Described mask 110 inner surfaces contain one deck ultrasound wave absorbing material;
Also comprise at least one ultrasonic detection device 12, described ultrasonic detection device 12 is rotating to be arranged on one of them summit of described touch-screen 11;
Described ultrasonic detection device 12 is connected with the control system of described touch-screen 11, and described control system, for the touch point distance that detects according to ultrasonic detection device 12 and the rotational angle of described ultrasonic detection device 12, obtains the coordinate of described touch point;
As shown in Figure 1, the present embodiment comprises a ultrasonic detection device 12, and on the vertex position in the rotating upper left corner that is arranged on touch-screen, ultrasonic detection device 12 can carry out back rotation around summit, rapid scanning touch-screen 11;
The range measurement principle of ultrasonic detection device 12 is can be by inner ultrasonic transmitter transmitting ultrasound wave, ultrasound wave is propagated in air, in way, encountering barrier just returns immediately, according to the aerial velocity of propagation of ultrasound wave, and ultrasound wave transmitting and time of return, just can calculate launching site apart from the distance of barrier;
Therefore,, when staff touch screen, ultrasonic detection device 12 just can detect the distance with touch point; Meanwhile, while barrier being detected according to ultrasonic detection device 12, ultrasonic detection device 12 and horizontal angle, the control system of touch-screen 11, according to described distance and angle, just can be determined the coordinate of touch point.
On touch-screen 11, be arranged with mask 110, mask 110 surfaces are provided with one deck ultrasound wave absorbing material; When touch-screen 11 is not touched, ultrasound wave is not encountered barrier, by the ultrasound wave absorbing material on mask, is absorbed, and the distance detecting on ultrasonic detection device 12 is infinite distance, and representing does not now have touch point on touch-screen 11.
In a preferred embodiment, described ultrasonic detection device 12 can be arranged on one of them summit of described touch-screen by a wheelwork;
The wheelwork of the present embodiment can be traditional driving device for step-by-step, rotary-type motor drive or directly drives the devices such as electric rotating machine, in such device, be provided with the control system of monitoring rotation speed and angle, can be connected with the control chip in ultrasonic detection device 12 ultrasonic detection device 12 and horizontal angle when can be used for obtaining ultrasonic detection device 12 and barrier being detected.
In a preferred embodiment, described ultrasonic detection device 12 carrys out 90 ° of horizontal extension lines to described touch-screen 11 another sides of back rotation around described summit from described touch-screen 11 horizontal extension line on one side under the drive of described wheelwork;
In the present embodiment, 12 of ultrasonic detection devices need to rotate 90 °, ultrasonic detection device 12 is installed summit around it, from touch-screen 11 horizontal extension line on one side, turn to back and forth the horizontal extension line of described touch-screen 11 another sides, can complete the detection scanning to whole touch-screen 11, detection speed is very fast.
Above-mentioned ultrasonic detection device 12 also can arrange a plurality of, each ultrasonic detection device 12 is arranged on wherein any one summit on 11 4 summits of touch-screen, a plurality of ultrasonic detection devices 12 detect simultaneously, can improve the accuracy of detection of touch screen touch point location.
In a preferred embodiment, if comprise two ultrasonic detection devices 12, two described ultrasonic detection devices 12 are separately positioned on touch-screen 11 wherein on two of a longer sides summits; Touch-screen 11 is generally rectangle, and two ultrasonic detection devices 12 are arranged on long two summits on one side, can accelerate detection speed.
In a preferred embodiment, if comprise two ultrasonic detection devices 12, two described ultrasonic detection devices 12 are separately positioned in touch-screen 11 on cornerwise two summits; Two ultrasonic detection devices 12 are arranged on to cornerwise two summits, can accelerate detection speed.
In a preferred embodiment, described ultrasonic detection device 12 can be ultrasonic range finder, can detect quickly and easily distance.
As shown in Figure 2, the present invention also provides the localization method of touch-screen locating device, comprises the steps:
The ultrasonic detection device that S21, control are arranged on place, touch-screen summit carrys out back rotation around described summit;
S22, obtain ultrasonic detection device that gather with distance touch point, and the rotational angle of described ultrasonic detection device;
S23, according to described distance and rotational angle, obtain the coordinate of described touch point.
As shown in Figure 1, ultrasonic detection device 12, is arranged on the vertex position in the upper left corner of touch-screen, controls ultrasonic detection device 12 and around summit, carrys out back rotation, rapid scanning touch-screen 11;
Point A (x, y) is the touch point on touch-screen 11, and ultrasonic detection device 12 can be measured apart from S, ultrasonic detection device 12 rotational angle is now θ, the coordinate (x, y) of touch point A can utilize trigonometric function to calculate: x=s*cos θ, y=s*sin θ.
In a preferred embodiment, the ultrasonic detection device 12 that described control is arranged on place, touch-screen summit comes the step of back rotation can be around described summit:
Control described ultrasonic detection device and along described touch-screen horizontal extension line on one side, carry out 90 ° of horizontal extension lines to described touch-screen another side of back rotation around described summit;
In the present embodiment, 12 of ultrasonic detection devices need to rotate 90 °, ultrasonic detection device 12 is installed summit around it, from touch-screen 11 horizontal extension line on one side, turn to back and forth the horizontal extension line of described touch-screen 11 another sides, can complete the detection scanning to whole touch-screen 11, detection speed is very fast.
In a preferred embodiment, described ultrasonic detection device is ultrasonic range finder, can detect quickly and easily distance.
Touch-screen locating device of the present invention and localization method, ultrasonic detection device is rotating to be arranged on one of them summit of touch-screen, ultrasonic detection device can carry out back rotation around summit, while being therefore touched on touch-screen, barrier on touch point can be detected at once to the distance of ultrasonic detection device, rotational angle while barrier being detected in conjunction with ultrasonic detection device again, can obtain the coordinate of touch point; One of ultrasonic detection device operated by rotary motion can meet the detection needs of whole touch-screen, and hyperacoustic directive property is strong, distant at Propagation, and therefore the touch-screen for oversize also can guarantee accuracy of detection; The cost of apparatus of the present invention is lower, can realize the quick location of super large touch-screen.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a touch-screen locating device, comprises the mask being set on touch-screen, it is characterized in that,
Described mask inner surface contains one deck ultrasound wave absorbing material;
Also comprise at least one ultrasonic detection device, described ultrasonic detection device is rotating to be arranged on one of them summit of described touch-screen;
Described ultrasonic detection device is connected with the control system of described touch-screen, and described control system, for the touch point distance that detects according to ultrasonic detection device and the rotational angle of described ultrasonic detection device, obtains the coordinate of described touch point.
2. touch-screen locating device according to claim 1, is characterized in that, described ultrasonic detection device is arranged on one of them summit of described touch-screen by a wheelwork.
3. touch-screen locating device according to claim 2, it is characterized in that, described ultrasonic detection device carrys out 90 ° of horizontal extension lines to described touch-screen another side of back rotation around described summit along described touch-screen horizontal extension line on one side under the driving of described wheelwork.
4. touch-screen locating device according to claim 1, is characterized in that, if comprise two ultrasonic detection devices, two described ultrasonic detection devices are separately positioned on touch-screen wherein on two of a longer sides summits.
5. touch-screen locating device according to claim 1, is characterized in that, if comprise two ultrasonic detection devices, two described ultrasonic detection devices are separately positioned in touch-screen on cornerwise two summits.
6. according to the touch-screen locating device described in claim 1 to 5 any one, it is characterized in that, described ultrasonic detection device is ultrasonic range finder.
7. a touch-screen localization method, is characterized in that, comprises the steps:
The ultrasonic detection device that control is arranged on place, touch-screen summit carrys out back rotation around described summit;
Obtain ultrasonic detection device that gather with distance touch point, and the rotational angle of described ultrasonic detection device;
According to described distance and rotational angle, obtain the coordinate of described touch point.
8. touch-screen localization method according to claim 7, is characterized in that, the ultrasonic detection device that described control is arranged on place, touch-screen summit comes the step of back rotation to be around described summit:
Control described ultrasonic detection device and along described touch-screen horizontal extension line on one side, carry out 90 ° of horizontal extension lines to described touch-screen another side of back rotation around described summit.
9. according to the touch-screen localization method described in claim 7 or 8, it is characterized in that, described ultrasonic detection device is ultrasonic range finder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479042.3A CN103530000A (en) | 2013-10-14 | 2013-10-14 | Touch screen positioning device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310479042.3A CN103530000A (en) | 2013-10-14 | 2013-10-14 | Touch screen positioning device and method |
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| CN201310479042.3A Pending CN103530000A (en) | 2013-10-14 | 2013-10-14 | Touch screen positioning device and method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080062151A1 (en) * | 1996-08-12 | 2008-03-13 | Joel Kent | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves |
| CN102495700A (en) * | 2011-12-09 | 2012-06-13 | 成都吉锐触摸技术股份有限公司 | Method for recognizing touch points by using acoustic wave touch screen |
| CN202632257U (en) * | 2012-02-21 | 2012-12-26 | 成都吉锐触摸技术股份有限公司 | Surface acoustic wave touch screen with double touch faces |
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2013
- 2013-10-14 CN CN201310479042.3A patent/CN103530000A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080062151A1 (en) * | 1996-08-12 | 2008-03-13 | Joel Kent | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves |
| CN102495700A (en) * | 2011-12-09 | 2012-06-13 | 成都吉锐触摸技术股份有限公司 | Method for recognizing touch points by using acoustic wave touch screen |
| CN202632257U (en) * | 2012-02-21 | 2012-12-26 | 成都吉锐触摸技术股份有限公司 | Surface acoustic wave touch screen with double touch faces |
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Application publication date: 20140122 |
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