CN101470548A - Method for measuring object dimension and angle through touch screen - Google Patents

Abstract

A method for measuring dimensions of objects by a touch screen includes steps of 1) calculating X-axis distance conversion coefficient C1 and Y-axis distance conversion coefficient C2, 2) using a touch pen to click two endpoints of a distance to be measured, 3) using the touch screen to transmit position coordinate signals (X1,Y1) and (X2,Y2) of the two endpoints to a central processing unit by electric conversion, 4) calculating actual physical dimensions D of the two endpoints by the central processing unit, and 5) outputting the actual physical dimensions D to an output device or a memory. Compared with the method for measuring dimensions of objects by the touch screen, a method for measuring angles of objects by the same includes using the touch pen to click three points of an angle to be measured according to the sequence of edge, angle and edge to calculate the included angle. The invention combines the digital processing technology and a digital display method, expands the application of the touch screen, and is convenient in use. Users can measure the dimensions and the angles of objects just by simple operations on the touch screen.

Description

The method of touch-screen Measuring Object size and angle

Technical field

The present invention relates to a kind of method, be applicable to the occasion of various application touch-screens based on touch-screen realization measurement size and angle.

Background technology

Along with the development of consumer electronics product, touch screen technology is widely used in portable equipment such as mobile phone, PDA, electronic game machine and the MP3/MP4 player.The principle of work of touch-screen is that the position signalling with contact point converts electric signal to and sends with certain data-interface signal format.Spread out at present thus and stretched out multiple application, as the literal hand-written input system, operation interface control, picture function etc.

In study, work and life at ordinary times, run into the occasion that some need Measuring Object size and angle through regular meeting.Because ruler, angle square generally can not carried, this has brought very big inconvenience to surveying work.But also there is not a kind of method that can utilize touch-screen to realize Measuring Object size and angle in the prior art.

Summary of the invention

The method that the purpose of this invention is to provide a kind of touch-screen Measuring Object size and angle is used simple, easy to operate.

The objective of the invention is to be achieved through the following technical solutions:

A kind of method of touch-screen Measuring Object size, its characteristics are that it may further comprise the steps:

1) calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of touch-screen and the coordinate figure of touch-screen;

2) testee is positioned over this touch-screen top as reference, uses felt pen on this touch-screen, to click two end points of the distance that will measure;

3) (X1 is Y1) with (X2 Y2) sends to central processing unit to this touch-screen with this position coordinates signal of 2 by electric conversion;

4) this central processing unit calculates this actual physical size D of 2 by two point coordinate signals and distance transform coefficient;

5) this central processing unit outputs to output device or storer with this actual physical size D.

Wherein, this X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 draw by following formula:

Maximum effectively perform region size/(the X-axis coordinate maximal value-X-axis coordinate minimum value) of C1=touch-screen X-axis;

Maximum effectively perform region size/(the Y-axis coordinate maximal value-Y-axis coordinate minimum value) of C2=touch-screen Y-axis.

Wherein, this actual physical size D draws by following formula: $D=\sqrt{{C1}^2{(X1-X2)}^2+{C2}^2{(Y1-Y2)}^2}.$

A kind of method of touch-screen Measuring Object angle, its characteristics are that it may further comprise the steps:

1) calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of touch-screen and the coordinate figure of touch-screen;

2) testee is positioned over this touch-screen top as reference, uses felt pen on this touch-screen, to click three points of the angle that will measure according to the order on limit, angle, limit;

3) this touch-screen by electric conversion with this position coordinates signal of 3 (X1, Y1), (X2, Y2), (X3 Y3) sends to central processing unit;

4) this central processing unit calculates the angle value θ of measurement by above-mentioned coordinate signal and distance transform coefficient C1, C2 at 3;

5) this central processing unit outputs to output device or storer with this angle value θ.

Wherein, this angle value θ draws by following system of equations:

K1＝C1(X1-X2)/C2(Y1-Y2)；

K2＝C1(X3-X2)/C2(Y3-Y2)；

tanθ＝|(k2-k1)/(1+k1k2)|。

Positive progressive effect of the present invention is: based on the basic function of touch screen module, in conjunction with digital processing technology and numeric displaying method, expanded the application of touch-screen, easy to use, the user only needs by size and the angle of shirtsleeve operation with regard to the energy measurement object on touch-screen.

Description of drawings

Fig. 1 is the hardware structure diagram of preferred embodiment of the present invention.

Fig. 2 is in the preferred embodiment of the present invention, the process flow diagram of Measuring Object size.

Fig. 3 is in the preferred embodiment of the present invention, the enforcement constitutional diagram of Measuring Object size.

Fig. 4 is in the preferred embodiment of the present invention, the process flow diagram of Measuring Object angle.

Embodiment

Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.

One, method of the present invention based on hardware configuration

Method among the present invention based on hardware configuration simple, touch screen module 101 sends to central processing unit 102 by Data Input Interface with the position coordinates signal, it outputs to display panel module 103 or storer through calculating with the result.In addition, also comprise an electric supply system that is used to power.

Two, the method for Measuring Object size

As shown in Figures 2 and 3.

Step 201 calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of employed touch-screen and the coordinate figure of touch-screen, and computing formula is as follows:

Maximum effectively perform region size/(the X-axis coordinate maximal value-X-axis coordinate minimum value) of C1=touch-screen X-axis;

Maximum effectively perform region size/(the Y-axis coordinate maximal value-Y-axis coordinate minimum value) of C2=touch-screen Y-axis.

Illustrate, the square among Fig. 3 is effective perform region of touch-screen, and its actual physical size is length of side 5cm, and establishing its X-axis coordinate maximal value is 100, and minimum value is 0.X-axis distance transform coefficient C1=5/100=0.05 then, Y-axis distance transform coefficient C2 can be with calculating with quadrat method.

Step 202 is switched total system in the mode of operation of measurement size.

Step 203 is positioned over the touch-screen top with testee (such as rubber etc.), uses felt pen to click two end points of the distance that will measure on touch-screen.

Step 204, (X1 is Y1) with (X2 Y2) sends to central processing unit to touch-screen with this position coordinates signal of 2 by electric conversion.

Step 205, central processing unit can draw this actual physical size D of 2 by two point coordinate signals and distance transform coefficient, and the distance between two points computing formula is as follows:

$D=\sqrt{{C1}^2{(X1-X2)}^2+{C2}^2{(Y1-Y2)}^2}.$ X-axis distance transform coefficient C1=0.05 in the integrating step 201 establishes the testee two-end-point and is respectively A, and B is 50 at a distance of coordinate, and then according to above-mentioned formula, A is D=0.05*50=2.5cm apart from the B physical size.

Step 206, central processing unit outputs to output device or storer with this dimension information.

Three, the method for Measuring Object angle

As shown in Figure 4.

Step 301 calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of employed touch-screen and the coordinate figure of touch-screen.Computing formula is identical with the method for Measuring Object size.

Step 302 is in the mode of operation that total system is operated in take measurement of an angle.

Step 303 is positioned over the touch-screen top with testee, uses felt pen to click three points of the angle that will measure according to the order on limit, angle, limit on touch-screen.

Step 304, touch-screen by electric conversion with this position coordinates signal of 3 (X1, Y1), (X2, Y2), (X3 Y3) sends to central processing unit.

Step 305, central processing unit be by three point coordinate signals and distance transform coefficient, the angle value θ that can measure in conjunction with following system of equations.

K1＝C1(X1-X2)/C2(Y1-Y2)；

K2＝C1(X3-X2)/C2(Y3-Y2)；

tanθ＝|(k2-k1)/(1+k1k2)|。

Obtain the value of tan θ herein, can obtain the concrete numerical value of angle θ.

Step 306, central processing unit outputs to output device or storer with this angle information.

More than measure the formula of distance between two points, the formula that takes measurement of an angle also can adopt other formula, as long as can calculate distance or angle.

Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.

Claims (5)

1, a kind of method of touch-screen Measuring Object size is characterized in that it may further comprise the steps:

1) calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of touch-screen and the coordinate figure of touch-screen;

2) testee is positioned over this touch-screen top as reference, uses felt pen on this touch-screen, to click two end points of the distance that will measure;

3) (X1 is Y1) with (X2 Y2) sends to central processing unit to this touch-screen with this position coordinates signal of 2 by electric conversion;

4) this central processing unit calculates this actual physical size D of 2 by two point coordinate signals and distance transform coefficient;

5) this central processing unit outputs to output device or storer with this actual physical size D.

2, the method for touch-screen Measuring Object size according to claim 1 is characterized in that, this X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 draw by following formula:

Maximum effectively perform region size/(the X-axis coordinate maximal value-X-axis coordinate minimum value) of C1=touch-screen X-axis;

Maximum effectively perform region size/(the Y-axis coordinate maximal value-Y-axis coordinate minimum value) of C2=touch-screen Y-axis.

3, the method for touch-screen Measuring Object size according to claim 2 is characterized in that, this actual physical size D draws by following formula: $D=\sqrt{{C1}^2{(X1-X2)}^2+{C2}^2{(Y1-Y2)}^2}.$

4, a kind of method of touch-screen Measuring Object angle is characterized in that it may further comprise the steps:

1) calculates X-axis distance transform coefficient C1 and Y-axis distance transform coefficient C2 according to the effective perform region physical size of touch-screen and the coordinate figure of touch-screen;

2) testee is positioned over this touch-screen top as reference, uses felt pen on this touch-screen, to click three points of the angle that will measure according to the order on limit, angle, limit;

3) this touch-screen by electric conversion with this position coordinates signal of 3 (X1, Y1), (X2, Y2), (X3 Y3) sends to central processing unit;

4) this central processing unit calculates the angle value θ of measurement by above-mentioned coordinate signal and distance transform coefficient C1, C2 at 3;

5) this central processing unit outputs to output device or storer with this angle value θ.

5, the method for touch-screen Measuring Object size according to claim 4 is characterized in that, this angle value θ draws by following system of equations:

K1＝C1(X1-X2)/C2(Y1-Y2)；

K2＝C1(X3-X2)/C2(Y3-Y2)；

tanθ＝|(k2-k1)/(1+k1k2)|。

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