CN1598751A - Control method for gradient induction mouse - Google Patents

Abstract

The invention discloses a gradient induction mouse control method, it is composed by sensor chip 1 and microprocessor 2. the sensor chip generates balancing induction signal XOUT and YOUT along X, Y directions, which are transmitted into timing/counter port of microprocessor uP2, the microprocessor decodes XOUT and YOUT to ensure acceleration on X and Y directions, then controls moving direction and speed of screen mouse, in order to achieve the intention of mouse intelligent control. The invention of mouse intelligent control method uses gravity as an input vector of gravity balancing induction equipment ( sensor chip), through (solidified) software calculation, to ensure the mouse special position on the moving intelligent terminal control panel. So the invention has the characters of simple structure, strong operating stability, and it is an ideal moving intelligent terminal for computer user.

Description

The degree of tilt induction mouse control method

Technical field

The present invention relates to computer realm, specifically a kind of mouse intelligence control method of mobile intelligent terminal.

Technical background

Present various mobile intelligent terminal, as palm PC PDA, be applied to the robot calculator field more and more widely, the input of information generally is the method that relies on button or touch-screen, and easily mouse input method owing to the requirement that does not meet the hand-held device portability can not get widespread use.If can be under the prerequisite that does not influence the mobile intelligent terminal portability, realize mouse Based Intelligent Control function, strengthen its ease for use, be undoubtedly that vast mobile intelligent terminal user dreams of.Proposition of the present invention can make this imagination be achieved.

Summary of the invention

The objective of the invention is to propose a kind of built-in balance induction installation to be replaced general external tumbling-type mouse, under the prerequisite that does not influence the mobile intelligent terminal portability, realize the mouse control function.

The present invention mainly forms (as Fig. 1) by sensor chip 1 and microprocessor 2, the X that sensor chip 1 produces, the induction signal X of the sense of equilibrium of Y direction _OUTAnd Y _OUTBe sent to timer/timer port of microprocessor μ P2, by the induction signal X of 2 pairs of sense of equilibriums of microprocessor _OUTAnd Y _OUTDecode, determine X, the acceleration on the Y both direction is controlled direction and the speed that screen mouse moves with this, thereby reaches the purpose of mouse Based Intelligent Control.ADXL202E is the two dimension acceleration sensor chip, and it can be provided at X, on the Y direction with the digital signal of the proportional working cycle of acceleration (being pulse width and the ratio in cycle) as output.A μ P can be directly imported in this working cycle output, working cycle is counted and calculated respectively X, the acceleration on the Y direction by μ P.X, the working cycle curve of typical case's output as shown in Figure 5 on the Y direction.

Wherein: the width that is in " on " state in the T1-circulation.

The width of T2-global cycle.Variation range: by 0.5ms to 10ms.

The time of working cycle-be in " on " state (T1) accounts for the ratio of global cycle (T2).

The pulse width of pulse width-be in " on " state.

Acceleration formula:

Acceleration (g)=(T1/T2-50%)/(12.5%)

Here, 0g represents 50% working cycle.Zoom factor: 12.5% working cycle/g

At X, on the Y both direction, output circuit can feed timer/timer port of a μ P to analog signal conversion for using working cycle modulated digital signal, this digital signal, and it is counted and decodes.Timer/timer is by measuring T1, the length of T2 signal and by above-mentioned formula: acceleration (g)=(T1/T2-50%)/(12.5%) calculates acceleration.Coding/decoding method has a lot, and the method that present embodiment adopts is (shown in Figure 6 as curve), and timer begins counting from the rising edge (Ta=0) of X-axis, and record negative edge (Tb), timer stop timing when X-axis rising edge (Tc) arrival next time.T1＝Tb-Ta，T2＝Tc-Ta。For Y-axis output, do to handle equally (Td, Te, Tf).

The mouse intelligence control method that the present invention proposes is with the input vector of gravity as acceleration of gravity balance induction installation (sensor chip), by (curing) computed in software, thus the locus of mouse on definite mobile intelligent terminal control panel.When the control panel of mobile intelligent terminal was parallel to the ground, acceleration transducer was the most responsive to degree of tilt.In case during the control panel run-off the straight of mobile intelligent terminal, the mouse on the control panel will roll under the effect of acceleration of gravity, the moving direction and the speed of the direction that tilts by control panel and the big or small mouse beacon of degree of tilt.When mouse enters certain selection area, can do short stay, and after the user presses ACK button, carry out " affirmation ".Also the speed that can move by the software setting mouse, function such as stop.

Description of drawings

Accompanying drawing 1 is hardware system block diagram of the present invention.

Accompanying drawing 2 is embodiment A DXL202E chip pin configuration instruction figure.

Wherein: the ST-test; T2-connects R _SET, by R _SETT2 is set; The COM-common port; Y _OUTThe output of-Y passage working cycle; X _OUTThe output of-X passage working cycle; Y _FILT-Y channel filtering pin; X _FILT-X passage filtering pin; V _DD-3V is to 5.25V.

Accompanying drawing 3 is ADXL202E chip circuit figure.

Accompanying drawing 4 is the software for calculation process flow diagram.

Accompanying drawing 5 is X, the working cycle curve map of typical case's output on the Y direction.

Accompanying drawing 6 is the decoding process of ADXL202E chip.

Embodiment

Below the present invention is described further by specific embodiment.

The present invention adopts the ADXL202E chip of ANALOG company as sensor chip 1.This chip both can be measured dynamic acceleration, can measure static acceleration again.Measurement range: ± 2g.The ADXL202E built-in chip type in mobile intelligent terminal, and is connected with the microprocessor μ P of mobile intelligent terminal, and the ADXL202E chip circuit as shown in Figure 3.The connection situation of eight pins of chip is: V _DDMeet 3V to the 5.25V power supply; V _DDAnd connect capacitor C between the COM _DCPlay the effect of uncoupling, C _DCRecommendation 0.1 μ F; X _FILT, Y _FILTConnect capacitor C respectively _X, C _Y, and by C _X, C _YValue the bandwidth of low-pass filter is set; T2 connecting resistance R _SETX _OUTAnd Y _OUTBe respectively X, the output on the Y direction, timer/timer port of a μ P of feeding, μ P calculates X respectively by software, the acceleration on the Y direction; ST is a test lead.

The present embodiment parameter is provided with: C _DC: recommendation 0.1 μ F; T2:X, the Y direction is used the width of identical global cycle.The T2 computing formula is as follows, by different R is set _SETValue is provided with T2.

$\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="A20041002016400061.png,A20041002016400062.png"\; state="\{\{state\}\}">T</figure-callout>}2=\frac{R_{\mathrm{SET}}\left(\mathrm{\&Omega;}\right)}{125\mathrm{M\&Omega;}}$

C _X, C _Y: by C _X, C _YThe bandwidth of low-pass filter is set.

R _FILT: representative value 32k Ω.

The software for calculation workflow:

The groundwork flow process of software as shown in Figure 4.The output X of CPU read transducer chip ADXL202E at first _OUTAnd Y _OUTCalculate X, the acceleration of Y both direction and mouse be at X, the new coordinate of Y direction, and the new coordinate of mouse and former coordinate compared, if do not have to change then continue the output of read transducer chip ADXL202E, if change, then on screen, show the reposition of mouse, carry out " affirmation " up to the user, enter respective handling, otherwise CPU continues the output of read transducer chip ADXL202E.

Beneficial effect of the present invention and advantage are, the mouse intelligence control method that proposes is with the input vector of gravity as acceleration of gravity balance induction installation (sensor chip), by (curing) computed in software, thus the locus of mouse on definite mobile intelligent terminal control panel.This mouse intelligence control method is to be prerequisite not influence the mobile intelligent terminal portability, realizes mouse Based Intelligent Control function, strengthens its ease for use.Therefore having characteristics simple in structure, that operational reliability is strong, is the desirable mobile intelligent terminal of vast computing machine user.

Claims (1)

1. degree of tilt induction mouse control method, mainly form by sensor chip (1) and microprocessor (2), it is characterized in that sense of equilibrium's induction signal of sensor chip (1) generation is sent to the timer/timer port of microprocessor (2), by microprocessor (2) sense of equilibrium's induction signal is decoded, determine X, acceleration on the Y both direction is controlled direction and the speed that screen mouse moves with this.

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