CN201522696U - Touch control device based on optical sensing - Google Patents

Abstract

The utility model relates to a touch control device based on optical sensing, which at least comprises two optical sensing receivers and a support. The optical sensing receivers are mounted on the support, the support provided with the optical sensing receivers is arranged in the front or at the rear of a display screen, and the optical sensing receivers are connected with a computer in a wire or wireless form. By utilizing the optical sensing form and adopting the optical sensing receivers as a main signal acquisition device, the touch control device is easy in production and manufacture, low in cost and large in action area, and has excellent advantage of cost compared with the prior art. Because of the optical sensing receivers in amount capable of being regulated according to actual application, the touch control device is high in recognition precision and can input information accurately according to pen touch or hand touch. In addition, signal receiving can be completed via an imaging method rather than a form of directly contacting with the surface of an interface display device, and then the device is not easy to be damaged physically, thereby prolonging service life thereof.

Description

Touch control device based on optical sensing

Technical field

The utility model belongs to photoelectron, technical field of electric appliances, relates to a kind of touch control device, relates in particular to a kind of touch control device based on optical sensor.

Background technology

Along with the extensive popularization and application of computer technology, electronization, the digitizing approach of information are more and more abundanter.The computed various peripheral hardwares of people have adopted various use utility model methods, finish the initial digitized process of information processing.For example: various inputting methods, voice typing, image acquisition or the like, wherein the most effective, the most a kind of is directly to carry out information input, instruction transfer by touching modes such as click.As, when utilizing the drawing of computing machine drawing,, expertly finish exquisite design producing and hinder people always owing to utilize mouse action really to use the flexible of an operation of drawing a picture on paper as people.Adopt touch manner, utilization finger or control pen direct control on operation interface, action is just as painting on paper, and therefore whole work is very easy finishes.

Touch control device mainly adopts resistance-type or condenser type or surface acoustic wave sensing mode at present, its concrete structure is to be provided with transparent touch membrane in the outside of display screen, the surperficial coated special material of touch membrane, when the particular location of touch membrane is clicked in operation, follow-up recognition control circuit is learnt the current potential of this position or the variation of electric capacity or sound wave phase place etc. by calculating, judge the position coordinates of clicking, thereby carry out corresponding operation.Owing to adopt the master control borad of existing mode, when realizing large scale and special applications, there are problems such as cost height, complex process, precision are low, and because the problems such as wearing and tearing that multi-pass operations produced, cause its serviceable life shorter, limited the application that touches control greatly.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and a kind of touch control device based on optical sensor is provided, and its manufacture craft is simple, and cost is low, Recognition and Acquisition precision height, long service life, simple installation.

The purpose of this utility model can realize by following technical proposals:

Touch control device based on optical sensor, at least comprise two optical sensing receivers and a support, it is characterized in that: the optical sensing receiver is rack-mount respectively, and the imaging angle of optical sensing receiver is the 90-150 degree, the support that the installation of optical sensing receiver will be installed again is installed in the place ahead or the rear of display screen, and the optical sensing receiver links to each other with computing machine by wired or wireless.

Described optical sensing receiver is the visible light receiver: camera, camera, laser pickoff, or non-visible light receiver: infrared thermoviewer, infrared remote receiver or ultrasonic receiver.

The utility model receives the image of controlling object by the optical sensing receiver; control the thing that object can be all tool physical forms such as hand, pen; then by to steps such as the image recognition of controlling object, space orientation, motion tracking, coordinate transforms; the volume coordinate of controlling object of spatial movement is mapped to the screen coordinate of being controlled computing machine, and realizes being controlled the control of computer equipment by movement locus or the morphologization of controlling object.

The utlity model has following advantage:

1, owing to by the optical sensing mode, adopt the optical sensing receiver as main signal pickup assembly, therefore manufacture easily, cost is lower, and active area is big, and is just outstanding more with respect to the cost advantage of prior art.

2, owing to adopt the optical sensing receiver, and the number of optical sensing receiver can adjust according to practical application, and therefore, the accuracy of identification height can touch input information by style of writing or hand exactly.

3, the signal reception is to produce by imaging mode, therefore, does not need the surface of direct contact interface display device, be difficult for equipment is produced physical damnification, therefore, long service life.

Description of drawings

Fig. 1 is an example structure synoptic diagram of the present utility model.

Fig. 2 is another example structure synoptic diagram of the present utility model.

Fig. 3 is an embodiment principle schematic of the present utility model.

Fig. 4 is another embodiment principle schematic of the present utility model.

Embodiment

The utility model will be further described in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model is by two optical sensing receivers and a support, two optical sensing receivers are installed in respectively on two angles of square support, the support that the installation of optical sensing receiver will be installed during use again is installed in the place ahead of display screen, the optical sensing receiver links to each other with computing machine by wired or wireless, and described optical sensing receiver can be among camera, camera, laser pickoff, infrared thermoviewer, infrared remote receiver, the ultrasonic receiver any one.In the situation of present embodiment, for being covered, images acquired information controls screen surface, and the imaging angle that need ask each optical sensing receiver is 90 degree.

Known as shown in Figure 3: a, b, a ₁, c ₂, can pass through triangular transformation, ask operation object coordinate x, the process of y is as follows:

${\sin \mathrm{<figure-callout\; id="1"\; label="C"\; filenames="H200920228082XE00012.png"\; state="\{\{state\}\}">C</figure-callout>}}_1=\sin A_2=\frac{a}{\sqrt{a^2+b^2}}$

${\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="H200920228082XE00012.png"\; state="\{\{state\}\}">c</figure-callout>}}_1=\sqrt{{a_1}^2+b^2-2a_1\mathrm{<figure-callout\; id="1"\; label="b\; cos\; C"\; filenames="H200920228082XE00012.png"\; state="\{\{state\}\}">b</figure-callout>}\cos C_{}{}_1},$ $\sin A_1=\frac{a_1\sin C_1}{{\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="H200920228082XE00012.png"\; state="\{\{state\}\}">c</figure-callout>}}_1}$

$a_2=\sqrt{{{\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="H200920228082XE00012.png,H200920228082XE00021.png"\; state="\{\{state\}\}">c</figure-callout>}}_2}^2+b^2-2c_{2}b\cos A_2},$ ${\sin \mathrm{<figure-callout\; id="2"\; label="C"\; filenames="H200920228082XE00012.png,H200920228082XE00021.png"\; state="\{\{state\}\}">C</figure-callout>}}_2=\frac{{\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="H200920228082XE00012.png,H200920228082XE00021.png"\; state="\{\{state\}\}">c</figure-callout>}}_2\sin A_2}{a_2}$

B＝180°-(A ₁+C ₂)， $a_3=\frac{b\sin A_1}{\sin B}$

y＝a ₃sinC ₂， x＝a ₃cosC ₂

Present embodiment receives the image of controlling object by two optical sensing receivers; control the thing that object can be all tool physical forms such as hand, pen; then by to steps such as the image recognition of controlling object, space orientation, motion tracking, coordinate transforms; the volume coordinate of controlling object of spatial movement is mapped to the screen coordinate of being controlled computing machine, and realizes being controlled the control of computer equipment by movement locus or the morphologization of controlling object.

As shown in Figure 2, the utility model is by four optical sensing receivers and a support, four optical sensing receivers are installed in respectively on four angles of square support, the support that the installation of optical sensing receiver will be installed during use again is installed in the place ahead of display screen, the optical sensing receiver links to each other with computing machine by wired or wireless, and described optical sensing receiver can be among camera, camera, laser pickoff, infrared thermoviewer, infrared remote receiver, the ultrasonic receiver any one.

In the situation of present embodiment, as shown in Figure 4,, images acquired information controls screen surface for being covered, need ask imaging angle 100 degree of each optical sensing receiver.The volume coordinate position calculation of operation object is similar to Example 1.Present embodiment receives the image of controlling object by four optical sensing receivers; control the thing that object can be all tool physical forms such as hand, pen; then by to steps such as the image recognition of controlling object, space orientation, motion tracking, coordinate transforms; the volume coordinate of controlling object of spatial movement is mapped to the screen coordinate of being controlled computing machine, and realizes being controlled the control of computer equipment by movement locus or the morphologization of controlling object.

Claims (2)

1. based on the touch control device of optical sensor, at least comprise two optical sensing receivers and a support, it is characterized in that: the optical sensing receiver is rack-mount respectively, and the imaging angle of optical sensing receiver is the 90-150 degree, the support that the installation of optical sensing receiver will be installed again is installed in the place ahead or the rear of display screen, and the optical sensing receiver links to each other with computing machine by wired or wireless.

2. the touch control device based on optical sensor according to claim 1 is characterized in that: described optical sensing receiver is camera, camera, laser pickoff, infrared thermoviewer, infrared remote receiver or ultrasonic receiver.

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