CN204009832U - Locate improved optical touch electronic whiteboard - Google Patents
Locate improved optical touch electronic whiteboard Download PDFInfo
- Publication number
- CN204009832U CN204009832U CN201420326638.XU CN201420326638U CN204009832U CN 204009832 U CN204009832 U CN 204009832U CN 201420326638 U CN201420326638 U CN 201420326638U CN 204009832 U CN204009832 U CN 204009832U
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- optical sensor
- sensor equipment
- display surface
- angle
- electronic whiteboard
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Abstract
The utility model discloses the improved optical touch electronic whiteboard in a kind of location, comprise screen assembly, optical sensor equipment and light source; Screen assembly comprises the display surface of rectangle; Described optical sensor equipment is two and is arranged at respectively the two ends of a horizontal sides of described display surface, all has the angle of non-zero with described display surface; Described light source comprises luminescence component and reflecting assembly, two described luminescence components be arranged at respectively two described optical sensor equipment places and all towards the center of described display surface; Described reflecting assembly is three and is arranged at respectively two vertical edges of described display surface and does not arrange in a horizontal sides of described optical sensor equipment.The improved optical touch electronic whiteboard in a kind of location described in the utility model, can be provided on the one hand the calibration operation opportunity of locating accurately, can improve on the other hand the sensing sensitivity and the accuracy of judgement degree that approach the touch point of line between two groups of optical sensor equipment.
Description
Technical field
The utility model relates to the improved optical touch electronic whiteboard in a kind of location, belongs to smart electronics product technical field.
Background technology
Optical electron blank is a kind of product up-to-date in current electronic whiteboard industry, the optical touch control technology that it adopts, its principle is mainly that the two ends by a certain the limit at electronic whiteboard arrange respectively two optical sensor equipment, the common upper left corner at electronic whiteboard and the upper right corner respectively arrange an optical sensor equipment, the optical sensor equipment that is positioned at the electronic whiteboard upper left corner can sense touch control operation object (user's finger or pointer) and the line of itself and the angle a of vertical direction or horizontal direction, be positioned at the optical sensor equipment in the electronic whiteboard upper right corner equally to sense the angle b of touch control operation object and the line of itself and vertical direction or horizontal direction, system can be obtained the positional information of touch control operation object by gathering the value of angle a and angle b, thereby realize the correct input of instruction.The advantage of optics touch screen blank is: the touch-control blanks such as first in reaction velocity with touch aspect precision, that optics touch screen blank is better than is infrared, surface acoustic wave and touch screens; Secondly dimensionally, optics touch screen blank size can accomplish more than 250 cun, and size strengthens its cost of manufacture and can not increase considerably thereupon.Existing optical electron blank needs the regular calibration operation that positions, by screen assembly, demonstrate a plurality of standard points, user touches each standard point successively, thereby optical whiteboard is automatically mapped touch location and standard point coordinate to realize the calibration of location, but when above-mentioned location calibration operation needs to lack foundation accurately; In addition, for the touch point that approaches line between two groups of optical sensor equipment, because angle changing is comparatively trickle, thus the sensitivity of optical sensor equipment and accuracy of judgement degree lower.
Utility model content
The deficiency that the utility model exists for prior art just, provide a kind of location improved optical touch electronic whiteboard, for realizing automatic-prompting location calibration operation, provide architecture basics opportunity on the one hand, can improve on the other hand the sensing sensitivity and the accuracy of judgement degree that approach the touch point of line between two groups of optical sensor equipment.
For addressing the above problem, technical solution adopted in the utility model is as follows:
Locate an improved optical touch electronic whiteboard, comprising:
Display device, optical sensor equipment and light source;
Described display device comprises screen assembly, and described screen assembly comprises the display surface of rectangle and is positioned at the sensing space of display surface front portion;
Described optical sensor equipment is two and is arranged at respectively the two ends of a horizontal sides of described display surface, and two described optical sensor equipment and described display surface all have the angle of non-zero;
Described light source comprises luminescence component and reflecting assembly, and described luminescence component is two and all towards the center of described display surface, two described luminescence components be arranged at respectively two described optical sensor equipment places; Described reflecting assembly is three and is arranged at respectively two vertical edges of described display surface and the light that the reflective surface of described reflecting assembly all sends in order to reflect described luminescence component towards the inner side of described display surface is not set in a horizontal sides of described optical sensor equipment.
When at least one touch control operation object enters sensing space, the light that two optical sensor apparatus senses cause in sensing space to touch control operation object changes and produces two signals, and the arbitrary signal in two signals all comprises two data: the line of touch control operation object and optical sensor equipment and the angle m of vertical direction or horizontal direction and the line of touch control operation object and optical sensor equipment and the angle n of display surface, therefore in fact the signal of arbitrary optical sensor equipment collection of said structure can both be determined the position of touch control operation object, but the variation of considering n is comparatively trickle, therefore judgment accuracy and confidence level are not high, so still adopt the position of the definite touch control operation object of m value in two signals, n value in two signals is used for checking accurate positioning.
All relating to " the angle m of the line of touch control operation object and optical sensor equipment and vertical direction or horizontal direction " the words in this article, all should understand like this: " line of touch control operation object and optical sensor equipment ", " vertical direction or horizontal direction (in fact referring to the normal of vertical direction or horizontal direction) ", " angle m " this three are coplanar, and this three is coplanar or parallel with described display surface.If m value is chosen as " line of touch control operation object and optical sensor equipment and the angle of vertical direction ", m value is all " line of touch control operation object and optical sensor equipment and the angle of vertical direction " from start to finish so herein; If m value is chosen as " line of touch control operation object and optical sensor equipment and the angle of horizontal direction ", m value is all " line of touch control operation object and optical sensor equipment and the angle of horizontal direction " from start to finish so herein.
As the improvement of technique scheme, two described optical sensor equipment have respectively two the first angle and the second angles that the number of degrees are different from surface level, and described the first angle number of degrees scope is 15 °～45 °, and described the second angle number of degrees scope is 45 °～75 °.
Compared with prior art, implementation result of the present utility model is as follows for the utility model:
The improved optical touch electronic whiteboard in a kind of location described in the utility model, thereby by the angle that makes optical sensor equipment and described display surface all have non-zero, making the touch control operation objective direction information that optical sensor equipment collects is no longer that an independent angle value is one-dimension information, but there is a two-dimensional signal of two angle values, thereby can be when analyzing touch control operation object space, above-mentioned precision of analysis is tested, thereby require to position calibration operation on suitable opportunity; In addition, by improving further i.e. two described optical sensor equipment, there are respectively two the first angle and the second angles that the number of degrees are different from surface level, also overcome for the touch point that approaches line between two groups of optical sensor equipment, because angle changing is comparatively trickle, so the sensitivity of optical sensor equipment and the lower problem of accuracy of judgement degree.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of locating improved optical touch electronic whiteboard described in the utility model;
Fig. 2 is the structural representation of A-A section in Fig. 1.
Embodiment
Content of the present utility model is described below in conjunction with specific embodiments.
As depicted in figs. 1 and 2, be a kind of location described in the utility model improved optical touch electronic whiteboard structural representation.For the improved optical touch electronic whiteboard in a kind of location described in the utility model comprises: display device, optical sensor equipment 2 and light source; Described display device comprises screen assembly 11, and described screen assembly 11 comprises the display surface of rectangle and is positioned at the sensing space of display surface front portion; Described optical sensor equipment 2 is two and is arranged at respectively the two ends of a horizontal sides of described display surface, and two described optical sensor equipment 2 and described display surface all have non-zero angle (angle 23 in Fig. 2 and angle 24, obviously the number of degrees of angle 23 and angle 24 can be identical can be also different); Described light source comprises luminescence component 31 and reflecting assembly 32, and described luminescence component 31 is two and all towards the center of described display surface, two described luminescence components 31 be arranged at respectively two described optical sensor equipment 2 places; Described reflecting assembly 32 is three and is arranged at respectively two vertical edges of described display surface and the light that the reflective surface of described reflecting assembly 32 all sends in order to reflect described luminescence component 31 towards the inner side of described display surface is not set in a horizontal sides of described optical sensor equipment 2.
During work, the optical sensor equipment 2 on the left side can obtain bearing data m1 and the n1 of touch control operation object, the optical sensor equipment 2 on the right can obtain bearing data m2 and the n2 of touch control operation object, wherein (m1, m2) is the most accurate for definite touch control operation object space, secondly, (n1, n2) is worst for (m1, n1), (m2, n2).Therefore can select (m1, m2) as read value, to select (m1, n1), (m2, n2) is test value, when (m1, m2), (m1, n1), (m2, n2) three groups of position differences that data are definite are excessive, can send location calibration operation indicating.
Ground same as the prior art, the improved optical touch electronic whiteboard in described a kind of location also comprises particularly: driving arrangement, power-supply unit, loudspeaker apparatus.
Described driving arrangement comprises processor (can be MST801 chip particularly) and the LCD TV decoding chip that moves Android system; Described processor comprises HDMI signal output part, UART interface, the USB interface of output HDMI signal; Described LCD TV decoding chip comprises UART interface, receives HDMI interface, audio signal output end and the Low Voltage Differential Signal output terminal of the HDMI signal of described processor output; Described processor and LCD TV decoding chip are connected by UART interface communication separately; Display device is electrically connected to the USB interface of processor; The HDMI interface of described processor and LCD TV decoding chip is electrically connected to the HDMI signal output part of described processor.In addition, described LCD TV decoding chip can also arrange some signal receiving interfaces, and described signal receiving interface can be selected from and receive the Tuner interface of TV signal, one or more in the D-SUB interface of the AV interface of receiving video signals and reception VGA signal.
Particularly, described optical sensor equipment 2 comprises CMOS camera and signal processing circuit, described signal processing circuit is electrically connected to described CMOS camera and signal that described CMOS camera is received carries out analyzing and processing and determine with touch-control and move corresponding position signalling, and described signal processing circuit is also electrically connected to the USB interface of described processor; Described luminescence component 31 can be infrared transmitting tube, and described luminescence component 31 also comprises driving circuit, and described driving circuit is electrically connected to described infrared transmitting tube and described infrared transmitting tube is sent to scan round signal.
Described display device also comprises LVDS interface, and described LVDS interface is electrically connected to the Low Voltage Differential Signal output terminal of described LCD TV decoding chip; Described loudspeaker apparatus is electrically connected to the audio signal output end of described LCD TV decoding chip; By described driving arrangement, controlled the operation of described display device and loudspeaker apparatus.
In conventional electronic whiteboard, two optical sensor equipment have identical angle with surface level, and be generally 45 °, therefore for the touch point that approaches line between two groups of optical sensor equipment, because angle changing is comparatively trickle, so the sensitivity of optical sensor equipment and accuracy of judgement degree lower.For this reason, the utility model proposes further to improve on the basis of aforementioned basic structure: make two described optical sensor equipment 2 and surface level have respectively two the first angle 21 and the second angles 22 that the number of degrees are different, described the first angle 21 number of degrees scopes are 15 °～45 °, and described the second angle 22 number of degrees scopes are 45 °～75 °.Said structure can make for the touch point that approaches line between two groups of optical sensor equipment, the angle changing of at least one optical sensor equipment 2 is comparatively obvious, thereby improves sensitivity and the accuracy of judgement degree of optical sensor equipment.
Above content is the detailed description of in conjunction with specific embodiments the utility model being done, and can not assert that the concrete enforcement of the utility model only limits to these explanations.For the utility model person of ordinary skill in the field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to the scope of the utility model protection.
Claims (2)
1. the improved optical touch electronic whiteboard in location, is characterized in that, comprising:
Display device, optical sensor equipment (2) and light source;
Described display device comprises screen assembly (11), and described screen assembly (11) comprises the display surface of rectangle and is positioned at the sensing space of display surface front portion;
Described optical sensor equipment (2) is two and is arranged at respectively the two ends of a horizontal sides of described display surface, and two described optical sensor equipment (2) and described display surface all have the angle of non-zero;
Described light source comprises luminescence component (31) and reflecting assembly (32), and described luminescence component (31) is two and all towards the center of described display surface, two the described optical sensor equipment (2) that are arranged at respectively of two described luminescence components (31) are located; Described reflecting assembly (32) is three and is arranged at respectively two vertical edges of described display surface and the light that the reflective surface of described reflecting assembly (32) all sends in order to reflect described luminescence component (31) towards the inner side of described display surface is not set in a horizontal sides of described optical sensor equipment (2).
2. the improved optical touch electronic whiteboard in a kind of location as claimed in claim 1, it is characterized in that, two described optical sensor equipment (2) have respectively two the first angle (21) and the second angles (22) that the number of degrees are different from surface level, described the first angle (21) number of degrees scope is 15 °～45 °, and described the second angle (22) number of degrees scope is 45 °～75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420326638.XU CN204009832U (en) | 2014-06-19 | 2014-06-19 | Locate improved optical touch electronic whiteboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420326638.XU CN204009832U (en) | 2014-06-19 | 2014-06-19 | Locate improved optical touch electronic whiteboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009832U true CN204009832U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420326638.XU Expired - Fee Related CN204009832U (en) | 2014-06-19 | 2014-06-19 | Locate improved optical touch electronic whiteboard |
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| Country | Link |
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| CN (1) | CN204009832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007883A (en) * | 2014-06-19 | 2014-08-27 | 安徽春勤教育装备有限公司 | Locating-improved optical touch electronic whiteboard and locating method thereof |
-
2014
- 2014-06-19 CN CN201420326638.XU patent/CN204009832U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007883A (en) * | 2014-06-19 | 2014-08-27 | 安徽春勤教育装备有限公司 | Locating-improved optical touch electronic whiteboard and locating method thereof |
| CN104007883B (en) * | 2014-06-19 | 2017-02-15 | 安徽春勤教育装备有限公司 | Locating-improved optical touch electronic whiteboard and locating method thereof |
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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: 20141210 Termination date: 20150619 |
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| EXPY | Termination of patent right or utility model |