CN101950210A - Finger mouse positioned by way of combining optical positioning with acceleration positioning - Google Patents
Finger mouse positioned by way of combining optical positioning with acceleration positioning Download PDFInfo
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- CN101950210A CN101950210A CN2010105031309A CN201010503130A CN101950210A CN 101950210 A CN101950210 A CN 101950210A CN 2010105031309 A CN2010105031309 A CN 2010105031309A CN 201010503130 A CN201010503130 A CN 201010503130A CN 101950210 A CN101950210 A CN 101950210A
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Abstract
The invention discloses a finger mouse which is positioned by way of combining optical positioning with acceleration positioning. The mouse comprises an optical positioning unit, an acceleration sensing unit and a micro-control unit, wherein the micro-control unit is used for receiving optical displacements and acceleration signals, and judging the relative displacement of the mouse and a working face by using corresponding calculation methods.
Description
Technical field:
The present invention relates to a kind of mouse apparatus that adopts the finger-worn type that optical alignment and acceleration location combines with and the disposal route of location.Be specifically related to the disposal route of a kind of like this mouse apparatus and location thereof, wherein, micro-control unit in order to receiving optical displacement gauge, acceleration signal, and is judged the relative shift of mouse and workplace with corresponding calculation method.
Background technology:
In the existing common mouse, object distance relative fixed during owing to use uses the optical imaging device of fixture distance to get final product accurate imaging and location.The principle of this optical mouse in being called United States Patent (USP) 6233368B1 number of " cmos digital optical navigation chip ", the name of May 15 calendar year 2001 issue is disclosed specially.In this patent, utilize the illuminator that holds in the optical mouse to illuminate directly to be arranged in the workplace of optical mouse below, the imaging system that is contained in the inside makes arbitrary graphic or feature imaging on the photoinduction face of cmos sensor of workplace.Because this mouse directly contacts with workplace when work, the fixed distance of workplace and imaging device, the picture accurate imaging of lens and the location of using the fixture distance.
Because the mouse shape is different with common writing implement shape, it wants whole mouse to operate in being held in the hand, and writes and mapping operation so be difficult to realization.Developed a kind of like this mouse apparatus of finger-worn type, when it was carried out accurate mapping operation or writes, it can be realized cursor control accurately and simply write.
No. 200420070941.4 (after this claiming " 41.4 patent ") names of application number of announcing on August 3rd, 2005 are called the example that discloses a kind of like this finger mouse in " Optical mouse that is worn finger-type ".Just as shown in fig. 1, be mounted with figure optical processing chip 107 in the mouse apparatus.Light emitting diode 118 sends light, and optical lens 121 makes light imaging on optical processing chip 107 of workplace reflection.So, when optical processing chip 107 captures the image of the workplace by optical lens 121 imagings, can obtain the direction of motion and the amount of exercise of indicating device from the variation of image.
Yet, there is bigger shortcoming in the optical imaging device of " 41.4 patent " when drawing or write, when the distance of indicating device and workplace changes greatly, because the fixedly depth of field of the optical imaging system of image distance restriction, make the image blur of workplace on imageing sensor unclear, thereby influence the seizure of sensor, cause location difficulty image.With reference to the input of Fig. 4 to literal " X ", the operation of mouse is formed by the start writing action and the combination of actions of starting writing usually.Among Fig. 2, when writing letter " X ", action of writing is made up of following steps: one, step M1: start writing at specified point, write then "/"; Two, step M2: start writing standardized then clockwise circular arc aloft; Three, step M3: start writing at specific point, write " ", start writing then.In whole writing process, starting writing and starting writing all requires mouse to keep accurate localization.Usually in the action of starting writing, look different people's use habit and different with the distance that workplace separates.
In order to make finger mouse in three dimensions, all can realize the location, developed a kind of like this mouse, it inserts acceleration transducer in mouse, detect the space displacement amount of computing mouse by the acceleration to mouse.Be called the example that discloses a kind of like this mouse in " ring-type wireless mouse " in disclosed Chinese application number 200910093119.7 on April 7th, 2010 (after this claiming " 19.7 patent ") name.Just as shown in Figure 3, it comprises motion sensor (1), inductor module (8), main control module (11) etc., and motion sensor (1) is an acceleration transducer.Owing to utilize the acceleration location of detecting mouse, need pre-determine the initial motion vector of mouse, determine but this scheme initial motion vector is difficult, often be prone to cursor in the use and obviously drift about.
In order to overcome the location difficulty of Optical mouse that is worn finger-type when starting writing, and acceleration transducer mouse initial vector is difficult definite, in use be prone to the obviously problem of drift of cursor, need a kind of like this mouse, it can be installed in the finger mouse smaller volume, and can make finger mouse when smoothness is write or drawn, starting writing and starting writing all requires mouse to keep accurate localization.
Summary of the invention:
Design the present invention is exactly in order to address the above problem.Fundamental purpose of the present invention provides a kind of cover locating device that can be installed in the finger mouse, it can be installed in the finger mouse smaller volume, and can make finger mouse when smoothness is write or drawn, starting writing and starting writing all requires mouse to keep accurate localization.Its basis: 1, fixedly the optical mouse of image distance can accurately be located under certain fixing object distance; 2, under the known situation of initial motion vector, acceleration change that can applied acceleration sensor sensing mouse changes the variation of calculation of motion vectors smoothly according to the acceleration that senses, thus the displacement calculating amount; According to above characteristic, adopt while built-in optical sensor, acceleration transducer in finger mouse.Utilize optical sensor, acceleration transducer characteristics separately, have complementary advantages, do location more accurately.
Because doing the location, the applied acceleration sensor needs known initial motion vector, and acceleration transducer is easy cursor drift in independent continuously long-time position fixing process, therefore need regularly do the correction of motion vector, the correction of motion vector mainly contains dual mode: 1, judge stationary state, to make the correction of motion vector; 2, the applied optics sensor is done optical alignment, to make positioning correcting.
Using finger mouse carries out cursor positioning, writes or simulates when writing in the air, the vertical a certain plane of lens combination optical axis in the setting space and optical positioning apparatus is a workplace, setting orthogonal diaxon in the plane respectively is X-axis and Y-axis, establish a Z axle perpendicular to the plane, three vertical mutually and crossing.
Set:
Actual measurement acceleration: a
0(referring to not remove the acceleration transducer sense acceleration of acceleration of gravity influence)
Acceleration of motion: a (referring to remove the actual motion acceleration after acceleration of gravity influences)
Acceleration of gravity: G
A/W acceleration: G
0
Time: T
Continuous acceleration transducer positioning time: T '
Equal time: t (referring to that acceleration transducer is detected in the time that is equating with the detected acceleration of motion on this plane of optical sensor with the acceleration of motion (a) of working face parallel direction or be similar to)
Unequal time: t ' (refer to acceleration transducer detected with the acceleration of motion (a) of working face parallel direction and detected unequal time of acceleration of motion on this plane of optical sensor)
Preset Time: t1, t2, t3
t2＞t1
T′≥t′
As the detected actual measurement acceleration of acceleration transducer (a
0) equal or be similar to default acceleration of gravity (G) (a ≈ G), and its cumulative time (T) surpasses default (T＞=t1), and optical sensor does not detect mouse moving information, and promptly then being judged to be mouse is stationary state (being that the motion vector of mouse on X-axis, Y-axis, Z-direction is zero); The time (t ') of doing continuously the location because of independent applied acceleration sensor is long more, and the possibility that cursor drift occurs is big more, and cursor drift is obvious more, therefore, when the application said method was done the judgement of mouse stationary state, t1 can adjust according to t ', t ' is more little, and t1 also can suitably shorten.
The displacement acceleration (a1) that detects X-axis, Y direction when optical sensor equates (or approximating) with the displacement acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, but when totally equal time, (t) was less than preset time t 3, according to former motion vector, do the location of X, Y direction with the detected acceleration change situation of acceleration transducer; When the displacement acceleration (a1) of the detected X-axis of optical sensor, Y direction equates (or approximating) with the displacement acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, and when totally equal time, (t) was more than or equal to preset time t 3, mainly do the location of X, Y direction with optical sensor, acceleration transducer is made auxiliary positioning; When the acceleration (a1) of the detected X-axis of optical sensor, Y direction and the acceleration (a2) of the detected X-axis of acceleration transducer, Y direction are unequal, make initial motion vector according to motion vector before, with the location of the detected acceleration change situation calculating of acceleration transducer X, Y direction.
Because may there be the difference on the individuality in acceleration transducer, detected under the same conditions acceleration of gravity (G) may there are differences, and when same acceleration transducer is placed different angles, detected acceleration of gravity (G) also may there are differences, therefore, the default acceleration of gravity (G) that can detect when product export and set under the corresponding conditions is worth.
In actual use, normal because relations such as temperature, service times, deviation may appear in the detected value of acceleration transducer, therefore, often need dynamic calibration, calibration steps can adopt: (T＞=t2), according to rest time, former default weighted calculation G values such as G value, and reset default G value when the stationary state time surpasses setting-up time (t2).
Further, because the depth of field of the optical lens of optical detection unit is fixing within the specific limits, when this finger mouse is used, should make when wearing finger contact desktop, workplace just in time is positioned at the field depth of optical unit lens combination, is beneficial to optical alignment.When finger contacted with workplace, acceleration transducer can detect tangible acceleration to Z-direction.Therefore, can set, when the detected X-axis of optical sensor, the displacement acceleration (a1) of Y direction and the detected X-axis of acceleration transducer, the displacement acceleration (a2) of Y direction equates (or approximating), and when totally equal time, (t) was more than or equal to preset time t 3, and acceleration transducer detects tangible acceleration to Z-direction in this period, can judge that finger contacts with workplace, thereby can locate the position of Z axle, because during the contact workplace, the motion of Z axle to the time be generally zero, thereby the motion vector of the Z axle of can resetting.
When writing or simulation is write in the air, that need to judge mouse and workplace contacts or simulates contact condition, because when writing or simulation is write in the air, be on certain workplace vertical or virtual work face, to carry out when starting writing with the Z axle, therefore need to judge whether starting writing of mouse, normally, can judge the intercept point of the stroke of starting to write with the corner dimension of the tangent line of space stroke point and workplace and space stroke point and the factors such as distance of Z axle minimum point.The setting of the distance of the size of tangent line angle and space stroke point and Z axle minimum point can be a fixed value, also can be according to the dynamically adjustment of rate of change (being the flexibility of curve) of length, stroke tangent line and the workplace angle of the stroke that is intercepted.
Description of drawings:
To the following description of the preferred implementation that provides, can make above-mentioned purpose of the present invention and feature become clear in conjunction with the drawings.Wherein:
Fig. 1 is that " 41.4 patent " name is called the structural representation of " Optical mouse that is worn finger-type ";
Fig. 2 is the block diagram that letter " X " write in expression;
Fig. 3 be "
19.7 patent" name be called "
Ring-type wireless mouse" the finger mouse structural representation;
Fig. 4 is the structural representation of an embodiment of " finger mouse of optics and acceleration co-located ";
Fig. 5 is the circuit block diagram of Fig. 4 " finger mouse of optics and acceleration co-located ";
Fig. 6 is the judgement of location of Fig. 4 " finger mouse of optics and acceleration co-located " and the process flow diagram of computing method;
Fig. 7 is the judgement mouse stationary state of Fig. 4 " finger mouse of optics and acceleration co-located " and the method flow diagram that resets default acceleration of gravity (G value);
Fig. 8 be Fig. 4 " finger mouse of optics and acceleration co-located " according to mouse the acceleration of gravity direction when static adjust the work coordinate direction work synoptic diagram of mouse;
Fig. 9 is the order of strokes figure of Fig. 4 " finger mouse of optics and acceleration co-located " when writing " justice " word when writing state;
Figure 10 is Fig. 4 " finger mouse of optics and the acceleration co-located " person's handwriting and action process decision chart of starting writing when writing " justice " word when writing state;
Figure 11 is the structural representation that " finger mouse of optics and acceleration co-located " front end has been installed an embodiment of range finding external member.
Embodiment:
Describe preferred implementation of the present invention below with reference to accompanying drawings in detail and express content of the present invention.
In the above-mentioned accompanying drawing, 1, imageing sensor; 2, acceleration transducer; 4, microcontroller and information transmission unit; 5, lighting source; 6, lens combination and light path; 7, power module; 8, workplace; 9, catoptron; 10, range finding external member.
Fig. 4 is the structural representation of " finger mouse of optics and acceleration co-located ".In the drawings, lighting source (5), lens combination and light path (6), imageing sensor (1), acceleration transducer (2) are placed in the front end of finger mouse successively, lighting source (5) illuminates workplace (8), light imaging on the photoinduction face of imageing sensor (1) of workplace (8) reflection through lens combination and light path (6), the displacement situation of imageing sensor (1) detected image, and output optical displacement information is to microcontroller and information transmission unit (4).Acceleration transducer (2) is used to detect the acceleration change situation of three-dimensional, and the output acceleration information is to microcontroller and information transmission unit (4).Microcontroller and information transmission unit (4), power module (7) are positioned at the middle and upper part of finger mouse; Microcontroller and information transmission unit (4) receive acceleration information, the optical displacement information of mouse, and press shown in the positioning flow figure of Fig. 6, finish the judgement and the calculating of location, and with the computing machine communication.Further, the processing of locating information can be finished separately by microcontroller and information transmission unit (4) with calculating, also can be finished by computing machine, or common calculating is finished.Further, also can settle cursor reset button, mouse right and left key, optical lens focal length to adjust key etc. on the mouse.
Shown in the process flow diagram of the judgement of the location of Fig. 6 and computing method, when the acceleration (a1) of the detected X-axis of optical sensor, Y direction equates (or approximating) with the acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, but when totally equal time, (t) was less than preset time t 3, according to former motion vector, do the location of X, Y direction with the detected acceleration change situation of acceleration transducer; When the acceleration (a1) of the detected X-axis of optical sensor, Y direction equates (or approximating) with the acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, and when totally equal time, (t) was more than or equal to preset time t 3, main optical sensor is done the location of X, Y direction, and acceleration transducer is made auxiliary positioning; When the acceleration (a1) of the detected X-axis of optical sensor, Y direction and the acceleration (a2) of the detected X-axis of acceleration transducer, Y direction are unequal, according to former motion vector, do the location of X, Y direction with the detected acceleration change situation of acceleration transducer.Further, the t3 time can the time fixed value, also can be dynamic value, t3 can prop up setting movement information according to continuous acceleration transducer positioning time (T '), the detected mouse movement speed of optical sensor, acceleration transducer and make adjustment with the situation of conforming to of the existing detected mouse movement information of optical sensor.
Fig. 7 is the method flow diagram of judging the mouse stationary state and resetting default acceleration of gravity (G value), and as shown in the figure, optical sensor detects the X-axis of mouse opposite working, the displacement information (l of Y-axis
X, l
Y), acceleration transducer detects three-dimensional acceleration information, and (the comprehensive acceleration of X, Y, Z axle a), when the displacement of the detected opposite working of optical sensor is static, and the detected acceleration of acceleration transducer equals acceleration of gravity, and aggregated duration (l during more than or equal to preset time t 1
X=0and l
Y=0and a=G, T 〉=t1), judge that promptly mouse is a stationary state is when the displacement of the detected opposite working of optical sensor is static, and the detected acceleration of acceleration transducer equals acceleration of gravity, and aggregated duration (l during more than or equal to preset time t 2
X=0and l
Y=0and a=G, T 〉=t2, t2 〉=t1) according to rest time T, former default weighted calculation G values such as G value, and resets default G value.Further, t1, t2 time can be fixed value, also can be dynamic value, and t1, t2 can be according to judging current continuous acceleration transducer positioning time (T '), acceleration transducer locating information that whether static situation such as do dynamically to adjust.
Do cursor positioning at mouse, write, during mapping operation, because each one operating habit difference, may there be certain angle with the vertical axis of workplace in the lens combination optical axis of mouse, because people's custom is done write operation at the workplace parallel with surface level, workplace can be considered with surface level and overlaps, therefore, utilize the static brief acceleration sensor of mouse to the direction of acceleration of gravity and the angle of the mouse Z-direction of former definition make adjustment, can effectively reduce the error of calculation that exists angle to produce because of original adopted workplace and real work face.As Fig. 8 is the work synoptic diagram that the acceleration of gravity direction when static is adjusted the work coordinate direction of mouse according to mouse; In the drawings, the work coordinate axis of the acceleration transducer of former setting is that X ' axle, Z ' axle exist angle with X-axis, the Z axle of real work face, in application corresponding, can make adjustment according to the differential seat angle that exists.
Enter at mouse write, when Graphics Mode is write operation, owing to will judge the action of starting writing and start writing of mouse, in an embodiment of the present invention, can utilize acceleration transducer to detect the movement locus of person's handwriting, with the 3 D motion trace of determining to write, and judge according to the variation of movement locus and movement rate and to start writing and to start writing.Figure 10 is the person's handwriting of writing when writing state and the action process decision chart of starting writing, in the drawings the angle theta of the tangent line of space motion path and workplace, with the even judgment basis of starting writing and starting writing that can be used as of variation of degree of closeness of the workplace distance of the minimum point of Z-direction (promptly with) and movement rate, usually, with the degree of closeness of workplace, the tangent line of space motion path and the angle theta of workplace be main judgment basis, auxiliary judgment is made in the variation of movement rate.It can be fixed value that the size of the tangent line of space motion path and the angle theta of workplace is set, and also can make adjustment according to the rate of change (being the flexibility of curve) of length, stroke tangent line and the workplace angle of the stroke that is intercepted, movement rate etc.Usually, people are when writing and draw, and the acceleration of Z-direction can obvious variation (to Z axle side one tangible normal acceleration being arranged usually) occur at the Z axle when touching workplace, the judgement of this flex point that also can help to start writing.
Utilize the acceleration transducer location to need to determine the initial motion vector of mouse, on the Z axle, optical sensor can not move and declare the mensuration of state, obtains the location that static motion vector helps Z-direction by the static method of above-mentioned judgement mouse.In addition, in the motion process of mouse, when workplace is positioned at the field depth of mouse because being limited in scope of mouse, can utilize the acceleration change situation and depth of field restriction mouse at the movement rate of Z-direction in certain scope.Usually, people have a horizontal segment after the flex point of starting writing when writing and draw, and at this moment the speed at the Z axle is zero, and acceleration also is zero, utilizes this characteristic also can do the judgement of the initial motion vector of Z axle.Further, distance measuring equipment can be installed on mouse, the distance of surveying work face and mouse, to determine the movement locus of mouse better at the Z axle, Figure 11 is the structural representation that the mouse front end has been installed the embodiment of range finding external member, usually, the range finding device can be the optical ranging external member, supersonic sounding external member etc.
Characteristics of the present invention and effect are: be equipped with on the mouse for fixing to objects such as finger folder of pointing or cover bands, front end at finger mouse is mounted with imageing sensor, acceleration transducer, utilize imageing sensor, acceleration transducer different operating characteristic separately, mouse is write or the whole flow process of mapping all can accurately be located in routine.
The present invention is not limited to foregoing embodiment, and the those skilled in the art of this area should be understood that and can make changes and improvements to it that this can not break away from the spirit and scope of the present invention that limited by the claim of being added.
Claims (8)
1. the mouse of a finger-worn type comprises compositions such as optical sensor, acceleration transducer, microcontroller and transmission unit.
2. the mouse of finger-worn type as claimed in claim 1, optical sensor wherein in order to detecting the displacement of this mouse opposite working, and is exported an optical displacement information according to this.
3. the mouse of finger-worn type as claimed in claim 1, acceleration transducer wherein in order to detecting the acceleration of this mouse, and is exported an acceleration information according to this.
4. as the mouse of claim 1,2,3 described finger-worn types, wherein microcontroller and transmission unit are in order to receive this optical displacement information; This micro-control unit also receives this acceleration information; According to optical displacement information, acceleration information, determine the relative shift of mouse and workplace with corresponding judgment and computing method, and output signal is to computing machine.
5. judgement as claimed in claim 4 and computing method, when the detected acceleration of acceleration transducer equals or approaching default acceleration of gravity, and the cumulative time surpasses the Preset Time value, and optical sensor do not detect mouse moving information, judges that then mouse is a stationary state.
6. judgement as claimed in claim 4 and computing method, the displacement acceleration (a1) that detects X-axis, Y direction when optical sensor equates (or approximating) with the displacement acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, but when totally equal time, (t) was less than preset time t 3, according to former motion vector, do the location of X, Y direction with the detected acceleration change situation of acceleration transducer.
7. judgement as claimed in claim 4 and computing method, when the displacement acceleration (a1) of the detected X-axis of optical sensor, Y direction equates (or approximating) with the displacement acceleration (a2) of the detected X-axis of acceleration transducer, Y direction, and when totally equal time, (t) was more than or equal to preset time t 3, then do the displacement judgement of X, Y direction with optical sensor.
8. judgement as claimed in claim 4 and computing method, when the acceleration (a1) of the detected X-axis of optical sensor, Y direction and the acceleration (a2) of the detected X-axis of acceleration transducer, Y direction are unequal, make initial motion vector according to motion vector before, with the location of the detected acceleration change situation calculating of acceleration transducer X, Y direction.
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| CN2010105031309A CN101950210A (en) | 2010-09-28 | 2010-09-28 | Finger mouse positioned by way of combining optical positioning with acceleration positioning |
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|---|---|---|---|
| CN2010105031309A CN101950210A (en) | 2010-09-28 | 2010-09-28 | Finger mouse positioned by way of combining optical positioning with acceleration positioning |
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| CN101950210A true CN101950210A (en) | 2011-01-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040119695A1 (en) * | 2002-12-10 | 2004-06-24 | Lee Bang Won | Optical pointing system, signal transmission method of the same, and signal processing method of computing apparatus used in the same |
| CN1996214A (en) * | 2006-01-05 | 2007-07-11 | 邓仕林 | Finger-fit type optical mouse device |
| CN101140490A (en) * | 2006-09-04 | 2008-03-12 | 达方电子股份有限公司 | Mouse and displacement compensation method thereof |
-
2010
- 2010-09-28 CN CN2010105031309A patent/CN101950210A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040119695A1 (en) * | 2002-12-10 | 2004-06-24 | Lee Bang Won | Optical pointing system, signal transmission method of the same, and signal processing method of computing apparatus used in the same |
| CN1996214A (en) * | 2006-01-05 | 2007-07-11 | 邓仕林 | Finger-fit type optical mouse device |
| CN101140490A (en) * | 2006-09-04 | 2008-03-12 | 达方电子股份有限公司 | Mouse and displacement compensation method thereof |
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Application publication date: 20110119 |