CN1797294A - Electronic equipment and method of controlling cursor possessing optical type displacement transducer - Google Patents
Electronic equipment and method of controlling cursor possessing optical type displacement transducer Download PDFInfo
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- CN1797294A CN1797294A CNA2004100819777A CN200410081977A CN1797294A CN 1797294 A CN1797294 A CN 1797294A CN A2004100819777 A CNA2004100819777 A CN A2004100819777A CN 200410081977 A CN200410081977 A CN 200410081977A CN 1797294 A CN1797294 A CN 1797294A
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Abstract
The invention is an electronic device having optical displacement sensor and the cursor control method thereof, and the electronic device has a measuring surface and a to-be-controlled cursor, where a to-be-measured object is pasted on the measuring surface, and the cursor control method comprises: providing a laser diode with a resonant cavity and using the laser diode to generate plural laser beams of different polarities in plural continuous and staggered time sections; leading the first and second laser beams to near the measuring surface to irradiate the to-be-measured object along the first and second incident axes and then leading reflected and scattered lights of the laser beams into the resonant cavity again; successively in the spaced first and second time sections, measuring electric variation of the resonant cavity and generating the first and second electric signals; successively by the two electric signals, obtaining the displacements of the object in the first and second incident axes and by the displacements, calculating the displacement components in the first and second measuring axes and moving the cursor by this.
Description
Technical field
The present invention relates to a kind of optical displacement sensor, particularly a kind of self-melange effect (self-mixing) and designed optical displacement sensor of TCM principle that utilizes laser diode.
Background technology
Conventional optical mouse is sent light beam by optical transmitting set, after the body surface reflection, receive the light signal of reflection again by optical receiver, by analyzing reflected light signal, obtain the relative position amount of movement of optical mouse and object, with the cursor on the control computer, for example: U.S. Pat No. 6246482, No. 6330057, No. 6424407 and No. 6452683.
In addition, also disclosed a kind of optical input device of Improvement type in 0 942 No. 285 patents of European patent EP-A, its optics sensing module with conventional optical mouse oppositely is fixed in an electronic installation arbitrarily, as: keyboard, in mobile computer or the personal digital assistant, and one transparent measurement window is set at the surface of shell of this electronic installation, when user's finger when above-mentioned measurement window is done relative motion, can obtain the rate of travel of finger and measurement window by the optics sensing mouse of conventional optical mouse, with the cursor on the control computer, or any indicating device.
Because the optics sensing module of conventional optical mouse, need use optical transmitting set and optical receiver simultaneously, and there is certain geometric relationship the position of optical transmitting set and optical receiver, so the volume of its disclosed optical sensing module is difficult for dwindling, and can't be applicable to some compact electronic devices.
Summary of the invention
In view of this, purpose of the present invention just is to provide a kind of novel optical displacement sensor and cursor control method thereof, makes general electronic installation all can pass through this sensor, and the cursor on the electronic installation is controlled.
For achieving the above object, the invention provides a kind of cursor control method of electronic installation, this electronic installation has a surface measurements and a cursor to be controlled, and a determinand is covered on this surface measurements, this cursor control method comprises the following steps: to provide a laser diode, this laser diode has a resonant cavity, and with laser diode in continuous and staggered a plurality of time sections, produce the laser beam that multiple tracks has opposed polarity respectively.Guide first and second laser beam near surface measurements, be radiated on the determinand by first and second incident axle respectively, the reflected light and the scattered light that reboot laser beam reenter resonant cavity.Then, in the very first time section and the second time section separately, measure the electric variable quantity of resonant cavity respectively, and produce first and second electric signal.Then, by first and second electric signal, obtain the displacement of determinand on the first incident axle and the second incident axle respectively, and by the displacement of first and second incident axle, calculate the displacement component of determinand on first measurement axis and second measurement axis, and move this cursor according to this.In addition, surface measurements system can be a virtual surface or the surface of an entity.
The cursor control method of electronic installation also comprises: by the displacement of above-mentioned set angle and first, second incident axle, calculate the displacement component of determinand on one the 3rd measurement axis, wherein this first, second and third measurement axis is mutually orthogonal.When the displacement component of this determinand on one the 3rd measurement axis exists, be judged as one and click signal.
The cursor control method of electronic installation also comprises: guide one the 3rd laser beam near surface measurements; When the reflected light of the 3rd laser beam and scattered light enter resonant cavity,, be judged as a scrolling signal with the displacement component of determinand on first, second measurement axis.
In a preferred embodiment, the first incident axle and this second incident axle intersect at same measurement point, and the angle of the first incident axle and this second incident axle is between 75 to 150 degree, the first incident axle and this second incident axle all with the folder one set angle of this surface measurements, this promptly decides angle between 0 to 45 degree.
The present invention also provides a kind of electronic installation with optical displacement sensor, has a screen, be used to show a controlled cursor, cursor can with respect to a determinand on a plurality of incident axles displacement and move, this electronic installation comprises: a body and be arranged on a optical displacement sensor on the body.Optical displacement sensor has a surface measurements, to carry this determinand, comprising: one has the laser diode of resonant cavity, can produce the laser beam that multiple tracks has different polarity respectively in continuous and staggered a plurality of time sections; A plurality of light paths are used for different laser beam and shine a determinand by different incident axles, and the reflected light and the scattered light that reboot each laser beam reenter resonant cavity; One detecting unit can be measured the electric variable quantity of resonant cavity, and produce different electric signal respectively in different time sections, and wherein above-mentioned variable quantity is caused by the reflected light of laser beam and the Doppler effect of scattered light; One converting unit obtains the displacement of determinand on the first incident axle and the second incident axle respectively by in the different electric signal; One arithmetic element is calculated the displacement component of determinand on one first measurement axis and one second measurement axis by the displacement on first and second incident axle; One control module is according to the displacement component of arithmetic element gained on first measurement axis and this second measurement axis, moving cursor.
In a preferred embodiment, arithmetic element can calculate the displacement component of determinand on one the 3rd measurement axis, and first, second and third measurement axis be mutually orthogonal by the displacement of set angle and first, second incident axle.Again, when there was displacement component on the 3rd measurement axis in determinand, control module judged that this displacement component is that a cursor clicks signal.
In a preferred embodiment, optical displacement sensor also comprises one the 3rd light path, and in order to guide one the 3rd laser beam near surface measurements, the reflected light and the scattered light that reboot the 3rd laser beam reenter resonant cavity.When the reflected light of the 3rd laser beam and scattered light entered resonant cavity, control module was according to the image of the displacement component scrolling screen of determinand on first, second measurement axis.
In a preferred embodiment, each light path comprises photoconduction and polaroid disposed thereon respectively, and each polaroid has different polarity.Again, first, second and third photoconduction is an optical fiber.
Secondly, optical displacement sensor also comprises an optical coupling unit, be arranged between laser diode and first, second and third light path, in order to first, second and third laser beam is coupled into first, second and third light path respectively, and guide the reflected light of first, second and third laser beam and scattered light to draw to enter resonant cavity again.
In a preferred embodiment, the focus of the focus of first laser light and this second laser light intersects at same measurement point, and the angle of the first incident axle and this second incident axle is between 75 to 150 degree, the first incident axle and this second incident axle all with the folder one set angle of this surface measurements, this promptly decides angle between 0 to 45 degree.In addition, the focus of the focus of first laser light and this second laser light can not intersect at same measurement point mode yet and is provided with.
In a preferred embodiment, detecting unit can be a voltage sensor or current sensor, can measure the electric variable quantity of resonant cavity in different time sections, and the corresponding electric signal of output.Above-mentioned again arithmetic element and control module are integrated in the microcontroller.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment and elaborate in conjunction with the accompanying drawings.
Description of drawings
Figure 1A is the schematic side view of optical displacement sensor of the present invention.
Figure 1B is the schematic top plan view of Figure 1A.
Fig. 1 C does not meet at the synoptic diagram of same measurement point for the focus of first, second laser beam.
Fig. 2 is the time sequential routine figure of optical displacement sensor of the present invention.
Fig. 3 A for when optical displacement sensor in the very first time synoptic diagram during section.
Fig. 3 B for when optical displacement sensor in second time synoptic diagram during section.
Fig. 4 is the metering circuit figure of optical displacement sensor.
One electronic installation of Fig. 5 display application optical displacement sensor of the present invention.
Fig. 6 A～6D is the different embodiment synoptic diagram of optical displacement sensor of the present invention.
Fig. 7 is another embodiment of electronic installation of the present invention.
The reference numeral explanation:
2 substrates
4,4a, 4b, 4c surface measurements
20 laser diodes
21 first light paths
211 first photoconductions
212 first polaroids
22 second light paths
221 second photoconductions
222 second polaroids
23 the 3rd light paths
24 the 4th light paths
25a, 25b, 25c polariscope
26 completely reflecting mirrors
27 full impregnated mirrors
28 resonant cavities
30 detecting units
31 voltage sources
32 resistance
33 electric capacity
40 converting units
50 arithmetic elements
200 personal digital assistant
250 screens
255 verniers
260 control modules
300 mobile phones
360 control modules
The a1 first incident axle
The a2 second incident axle
The O measurement point
P
1First light beam
P
2Second light beam
P
3The 3rd light beam
P
4The 4th light beam
t
1Very first time section
t
2The second time section
The vertical angle of α incident axle and surface measurements
The horizontal sextant angle of first, second incident axle of β
Embodiment
Figure 1A is the schematic side view of optical displacement sensor of the present invention, and Figure 1B is the schematic top plan view of Figure 1A.Shown in 1A, 1B figure, optical displacement sensor 100 is used to measure the displacement component of determinand (being user's finger on the figure) on a plurality of measurement axis on surface measurements 4, comprises first light path 21, second light path 22 and is arranged on laser diode 20 on the substrate 2, detecting unit 30, converting unit 40 and arithmetic element 50.
In order to make sensor when designing bigger elasticity be arranged, the laser diode 20 of optical displacement sensor 100 of the present invention also can be used as the usefulness of optical receiver.By the emitted laser beam of first light path 21 or second light path 22 after the determinand reflection, the reflected light and the scattered light of part can reenter in the resonant cavity 28 of laser diode 20 via first light path 21 or second light path 22 respectively, and in resonant cavity 28, produce self-melange effect (self-mixing), cause the variable quantity of resonant cavity 28.The self-melange effect of laser diode can be understood its principle from following list of references: " Small laser DopplerVelocimeter based on the self-mixing effect in a diode laser ", Applied Optics, Vol.27, No.2, Jan.15,1988, Pages 379-385 and " Laser Doppler Velocimeter basedon the self-mixing effect in a fiber-coupled semiconductor laser ", Applied Optics, Vol.31, No.8, Jun.20,1992, Pages 3401-3408.
By above-mentioned list of references as can be known, when determinand and laser diode 20 have relative displacement, the reflected light of laser beam and scattered light have frequency change because of Doppler effect, laser diode 20 can produce a variation delta g because of the self-melange effect of reflected light and scattered light simultaneously, and the relative velocity v of this variation delta g and determinand satisfies following formula:
Wherein K is the coupling constant of resonant cavity 28 and reflected light and scattered light, and v is the relative velocity of determinand, and f is the original frequency of laser beam, and t is a time interval, and c is the light velocity.
By above-mentioned explanation about self-melange effect as can be known, when determinand is done relative motion on surface measurements 4, laser diode 20 can produce a variation delta g, therefore can simply obtain the variation delta g of resonant cavity 28 by detecting unit 30, and producing an electric signal, the frequency of this electric signal is modulated by Doppler effect.Pass through the converting unit 40 of an analog-to-digital again, with the electric signal digitizing, then, calculate by arithmetic element 50, obtain the displacement of determinand on the first incident axle a1, the second incident axle a2, and then try to achieve the displacement component of determinand on the first measurement axis x, the second measurement axis y and the 3rd measurement axis z.
Shown in 1A, 1B figure, the first incident axle a1 and the second incident axle a2 intersect at same measurement point O, the first incident axle a1 and the second incident axle a2 are a set angle [alpha] with the vertical angle of surface measurements 4 all, between 0 to 75 degree, and the horizontal sextant angle β of the first incident axle a1 and the second incident axle a2 is between 75 to 150 degree, by the geometric relationship of the first incident axle a1, the second incident axle a2 and surface measurements 4 as can be known, the displacement on the first incident axle a1, the second incident axle a2.Displacement comprises distance, direction and speed.Can calculate the displacement component and the second measurement axis y displacement component of the first measurement axis x by the geometric relationship of the first incident axle a1, the second incident axle a2 and surface measurements 4.In addition, shown in Fig. 1 C, the first laser beam P
1The focus and the second laser beam P
2Focus also can not meet at same measurement point O, but be provided with near the mode that interlaces measurement point O.
Though optical displacement sensor 100 of the present invention only has two incident axles, but the incident axle of laser light and the vertical angle of surface measurements 4 are α, the horizontal sextant angle of the first incident axle a1 and the second incident axle a2 is β, so arithmetic element 50 can be tried to achieve the displacement component of z axle by simple vector operation.Therefore, when determinand has the relative displacement component on the z axle, can be judged as one " click signal ", the ability that makes optical displacement sensor 100 of the present invention have detecting horizontal x-y axial translation component simultaneously and click action.In addition, surface measurements 4 can be a virtual surface; Surface measurements 4 also can be the surface of an entity, for example is made of light-transmitting materials such as glass or plastics.
Fig. 2 is time sequential routine of optical displacement sensor of the present invention figure, Fig. 3 A and Fig. 3 B be respectively optical displacement sensor at the very first time section and second time synoptic diagram during section.Shown in Fig. 2 and Fig. 3 A, very first time section t
1Can be divided into three hours district t
P1, t
S1, t
D1, at t
P1Laser diode 20 provides the first laser beam P of one first polarity in the time zone
1, be radiated on the determinand along the first incident axle a1 via first light path 21, partly reflected light and scattered light also reenter resonant cavity 28 via first light path 21 simultaneously, and at t
S1In the time zone, make laser diode produce a variable quantity, then at t because of self-melange effect
D1Detecting unit 30, converting unit 40 and arithmetic element 50 obtain the displacement of determinand on the first incident axle a1 in the time zone.Shown in Fig. 2 and Fig. 3 B, very first time section t
2Can be divided into three hours district t
P2, t
S2, t
D2, at t
P2Laser diode 20 provides the second laser beam P of one second polarity in the time zone
2, be radiated on the determinand along the second incident axle a2 via second light path 22, partly reflected light and scattered light also reenter resonant cavity 28 via second light path 22 simultaneously, and at t
S2In the time zone, make laser diode 20 produce a variable quantity, then at t because of self-melange effect
D2Detecting unit 30, converting unit 40 and arithmetic element 50 obtain the displacement of determinand on the second incident axle a2 in the time zone, and then arithmetic element 50 can obtain the displacement component of determinand at the first measurement axis x, the second measurement axis y and the 3rd measurement axis z as calculated, as the usefulness of follow-up cursor control.
Fig. 4 is the metering circuit figure of optical displacement sensor.As shown in Figure 4, laser diode 20 is connected with a voltage source 31, a resistance 32, forms a bleeder circuit, and in this embodiment, detecting unit 30 is a voltage sensor, and electric capacity 33 is connected with voltage sensor, is used to block high frequency noise.When laser diode 20 produces a variation delta g because of self-melange effect, detecting unit 30 can record a voltage variety, this voltage variety is the digital signal that contains distance, speed and direction with analog signal conversion via converting unit 40, again via arithmetic element 50 calculate after, can try to achieve the different measuring axle displacement component.Secondly, the detecting unit 30 of optical displacement sensor of the present invention also can be current sensor, and its metering circuit belongs to known technology, promptly repeats no more at this.
One electronic installation of Fig. 5 display application optical displacement sensor of the present invention, because the volume of optical displacement sensor of the present invention is very little, therefore can be applicable to as: on the electronic installations such as mobile computer, mobile phone, personal digital assistant, telepilot, as the usefulness of cursor control.For convenience of description, Fig. 5 only with personal digital assistant 200 as a preferred embodiment.
As shown in Figure 5, personal digital assistant 200 has a screen 250, can show a controlled cursor 255, and optical displacement sensor of the present invention 100 is arranged on the central authorities below of screen 250, and is electrically connected with the control module 260 of personal digital assistant 200.When user's finger is mobile on optical displacement sensor 100, control module 260 can be according to optical displacement sensor 100 measured fingers at x, displacement component on the y axle cursor 255 that relatively moves, can judge whether the user imports according to the displacement component of z axle in addition and click signal, carry out corresponding operation again.
The 6A～6D figure is the different embodiment synoptic diagram of optical displacement sensor of the present invention, and each embodiment has different optical coupling units respectively, the laser beam with opposed polarity can be coupled in the different light paths.
As shown in Figure 6A, optical displacement sensor has one first polariscope 25a and one second polariscope 25b.Wherein the first polariscope 25a only can allow the first laser beam P with first polarity
1By, and reflect the laser beam of other polarity; The second polariscope 25b only can allow the 3rd laser beam P with the 3rd polarity
3By, and reflect the laser beam of other polarity.Therefore, first, second, third laser beam P
1～P
3Can be coupled into respectively in first, second, third light path 21,22,23, the notion of the aforementioned TCM of arranging in pairs or groups again can be measured on three incident axles, and the displacement of determinand is with the control cursor.
Shown in Fig. 6 B, the optical coupling unit of this embodiment is similar to Fig. 6 A, comprises two polariscope 25a, and a 25b and a completely reflecting mirror 26 cooperate newly-increased completely reflecting mirror 26, except that can increasing light path design flexible, also can reach required beam split function.
Fig. 6 C is the vertical view of a feasible optical coupling unit, shown in Fig. 6 C, the optical coupling unit of this embodiment is by two polariscope 25a, a 25b and a full impregnated mirror 27 are formed, it is encircled into an equilateral triangle zone, laser diode 20 is arranged in the equilateral triangle zone, and the incident direction of each laser beam and 60 ° of angles of each minute surface folder, makes first, second, third laser beam P
1～P
3Can be coupled into respectively in first, second, third light path 21,22,23.
Fig. 6 D is the vertical view of another feasible optical coupling unit, shown in Fig. 6 D, this embodiment is similar to the optical coupling unit of Fig. 6 C, form by three polariscope 25a～25c and a full impregnated mirror 27, it is encircled into a square area, laser diode 20 is arranged in the square area, and the incident direction of each laser beam and each minute surface folder 45, makes first, second, third, fourth laser beam P
1～P
4Can be coupled into respectively in first, second, third, fourth light path 21～24.
Fig. 7 is another embodiment of electronic installation of the present invention.In this embodiment, be example only, and for simplified, the screen and the button of mobile phone all omit with the mobile phone.
As shown in Figure 7, mobile phone 300 has an optical displacement sensor 100, a control module 360 and three surface measurements 4a, 4b, 4c, wherein the first surface measurements 4a is positioned at the right side of mobile phone 300, second and third surface measurements 4b, 4c is positioned at the left side of mobile phone 300, and when the user gripped mobile phone 300, right hand thumb was just corresponding to the first surface measurements 4a, forefinger is just corresponding to the second surface measurements 4b, and middle finger is just corresponding to the 3rd surface measurements 4c.
Secondly, optical displacement sensor 100 has four light paths 21～24 respectively, first light path 21 and second light path 22 can be measured at the first surface measurements 4a thumb in x axle, y axle and the axial displacement of z, the 3rd light path 23 can be measured at the second surface measurements 4b forefinger in the axial displacement of z, and the 4th light path 24 can be measured at the 3rd surface measurements 4c middle finger in the axial displacement of z.When thumb moves with respect to the first surface measurements 4a, the relatively moving or click action of the signal controlling onscreen cursor that control module 360 can be by optical displacement sensor 100.When forefinger is covered on the second surface measurements 4b or moves with respect to the z direction of principal axis of the second surface measurements 4b, the reflected light of one the 3rd laser beam and the resonant cavity that scattered light enters laser diode are promptly arranged, therefore by control module 360, can be with thumb moving on the first surface measurements 4a, be considered as a picture rolling signal, scrolling screen whereby reaches the purpose of fast browsing.When middle finger is covered on the 3rd surface measurements 4c or moves with respect to the z direction of principal axis of the 3rd surface measurements 4c, the reflected light of one the 4th laser beam and the resonant cavity that scattered light enters laser diode are promptly arranged, therefore by control module 360 or suitable program design, move or other specific function and can reach corresponding fast key.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; certainly can do various changes and retouching, so protection scope of the present invention should be with being as the criterion that claims scope is defined.
Claims (33)
1. the cursor control method of an electronic installation, this electronic installation has a surface measurements and a cursor to be controlled, and a determinand is covered on this surface measurements, and this cursor control method comprises the following steps:
One laser diode is provided, and this laser diode has a resonant cavity, and with this laser diode in continuous and staggered a plurality of time sections, produce the multiple tracks laser beam respectively, wherein these laser beam have different polarity respectively;
Guide one first laser beam near this surface measurements, shine on the determinand along one first incident axle, the reflected light and the scattered light that reboot this first laser beam reenter this resonant cavity;
In a plurality of very first time sections, measure the electric variable quantity of this resonant cavity, and produce a plurality of first electric signal;
Guide one second laser beam near this surface measurements, shine on this determinand along one second incident axle, the reflected light and the scattered light that reboot this second laser beam reenter this resonant cavity;
In these second time sections, measure the electric variable quantity of this resonant cavity, and produce a plurality of second electric signal;
By these first electric signal and these second electric signal, obtain the displacement of this determinand on this first incident axle and this second incident axle respectively; And
By the displacement on this first incident axle and this second incident axle, calculate the displacement component of this determinand on one first measurement axis and one second measurement axis, and move this cursor according to this.
2. the cursor control method of electronic installation as claimed in claim 1, it is characterized in that: this first incident axle and this second incident axle intersect at same measurement point.
3. the cursor control method of electronic installation as claimed in claim 1 is characterized in that: the angle of this first incident axle and this second incident axle is between 75 to 150 degree.
4. the cursor control method of electronic installation as claimed in claim 1 is characterized in that: this first incident axle and this second incident axle all with the folder one set angle of this surface measurements, this promptly decides angle between 0 to 45 degree.
5. the cursor control method of electronic installation as claimed in claim 1 is characterized in that: also comprise:
By the displacement of this set angle and this first, second incident axle, calculate the displacement component of this determinand on one the 3rd measurement axis, wherein this first, second and third measurement axis is mutually orthogonal.
6. the cursor control method of electronic installation as claimed in claim 5 is characterized in that: also comprise:
When the displacement component of this determinand on one the 3rd measurement axis exists, be judged as one and click signal.
7. the cursor control method of electronic installation as claimed in claim 5 is characterized in that: also comprise:
Guide one the 3rd laser beam near this surface measurements; And
When the reflected light of the 3rd laser beam and scattered light enter this resonant cavity,, be judged as a scrolling signal with the displacement component of this determinand on this first, second measurement axis.
8. an optical displacement sensor is used in measurement in the displacement component of a determinand on a plurality of measurement axis on the surface measurements, comprising:
One laser diode, this laser diode has a resonant cavity, can produce the multiple tracks laser beam respectively in continuous and staggered a plurality of time sections, and wherein these laser beam have different polarity respectively;
One first light path, this first light path guide one first laser beam near this surface measurements, shine on the determinand along one first incident axle, and the reflected light and the scattered light that reboot this first laser beam reenter this resonant cavity;
One second light path, this second light path guide one second laser beam near this surface measurements, shine on this determinand along one second incident axle, and the reflected light and the scattered light that reboot this second laser beam reenter this resonant cavity;
One detecting unit, this detecting unit is measured the electric variable quantity of this resonant cavity respectively in a plurality of very first time sections and the second time section, and produce a plurality of first electric signal and a plurality of second electric signal, wherein this variable quantity system is caused by the reflected light of first, second laser beam and the Doppler effect of scattered light; And
One converting unit, this converting unit obtain the displacement of this determinand on this first incident axle and this second incident axle respectively by these first electric signal and these second electric signal; And
One arithmetic element, this arithmetic element are calculated the displacement component of this determinand on one first measurement axis and one second measurement axis by the displacement on this first incident axle and this second incident axle.
9. optical displacement sensor as claimed in claim 8 is characterized in that: this first incident axle and this second incident axle intersect at same measurement point.
10. optical displacement sensor as claimed in claim 8 is characterized in that: the angle of this first incident axle and this second incident axle is between 75 to 150 degree.
11. optical displacement sensor as claimed in claim 8 is characterized in that: this first incident axle and this second incident axle all with the folder one set angle of this surface measurements, this promptly decides angle between 0 to 45 degree.
12. optical displacement sensor as claimed in claim 8, it is characterized in that: arithmetic element is by the displacement of this set angle and this first, second incident axle, calculate the displacement component of this determinand on one the 3rd measurement axis, and this first, second and third measurement axis is mutually orthogonal.
13. optical displacement sensor as claimed in claim 8, it is characterized in that: this first light path has one first photoconduction and first polaroid disposed thereon, and the polarity of this first polaroid is this first polarity, this second light path has one second photoconduction and second polaroid disposed thereon, and the polarity of this second polaroid is this second polarity.
14. optical displacement sensor as claimed in claim 13 is characterized in that: also comprise:
One is arranged on the optical coupling unit between this laser diode and this first, second light path, this optical coupling unit is in order to being coupled into this first and second light path with this first, second laser beam, and guides the reflected light of this first, second laser beam and scattered light to draw to enter this resonant cavity again.
15. optical displacement sensor as claimed in claim 13 is characterized in that: also comprise:
One the 3rd light path, the 3rd light path comprise one the 3rd photoconduction and the 3rd polaroid disposed thereon, and to guide one the 3rd laser beam near this surface measurements, the reflected light and the scattered light that reboot the 3rd laser beam reenter this resonant cavity.
16. optical displacement sensor as claimed in claim 15 is characterized in that: also comprise:
One optical coupling unit, this optical coupling unit is arranged between this laser diode and this first, second and third light path, this optical coupling unit is in order to being coupled into this first, second and third light path with this first, second and third laser beam, and guides the reflected light of this first, second and third laser beam and scattered light to draw to enter this resonant cavity again.
17. optical displacement sensor as claimed in claim 15 is characterized in that: this first, second and the 3rd photoconduction be optical fiber.
18. optical displacement sensor as claimed in claim 8 is characterized in that: this detecting unit is a voltage sensor or current sensor.
19. optical displacement sensor as claimed in claim 8 is characterized in that: this arithmetic element is a microcontroller.
20. an electronic installation has a cursor, this cursor can with respect to a determinand on a plurality of incident axles displacement and move, this electronic installation comprises:
One body, this body has a screen, is used for showing this controlled cursor;
One optical displacement sensor, this optical displacement sensor has a surface measurements, to carry this determinand, comprising:
One laser diode, this laser diode has a resonant cavity, can produce the multiple tracks laser beam respectively in continuous and staggered a plurality of time sections, and wherein these laser beam have different polarity respectively;
One first light path, this first light path guide one first laser beam near this surface measurements, shine on the determinand along one first incident axle, and the reflected light and the scattered light that reboot this first laser beam reenter this resonant cavity;
One second light path, this second light path guide one second laser beam near this surface measurements, shine on this determinand along one second incident axle, and the reflected light and the scattered light that reboot this second laser beam reenter this resonant cavity;
One detecting unit, this detecting unit is measured the electric variable quantity of this resonant cavity respectively in a plurality of very first time sections and the second time section, and produce a plurality of first electric signal and a plurality of second electric signal, wherein this variable quantity is caused by the reflected light of first, second laser beam and the Doppler effect of scattered light; And
One converting unit, this converting unit obtain the displacement of this determinand on this first incident axle and this second incident axle respectively by these first electric signal and these second electric signal; And
One arithmetic element, this arithmetic element are calculated the displacement component of this determinand on one first measurement axis and one second measurement axis by the displacement on this first incident axle and this second incident axle;
One control module, this control module move this cursor according to the displacement component of this arithmetic element gained on this first measurement axis and this second measurement axis on this screen.
21. electronic installation as claimed in claim 20 is characterized in that: this first incident axle and this second incident axle intersect at same measurement point.
22. electronic installation as claimed in claim 20 is characterized in that: the angle of this first incident axle and this second incident axle is between 75 to 150 degree.
23. electronic installation as claimed in claim 20 is characterized in that: this first incident axle and this second incident axle all with the folder one set angle of this surface measurements, this promptly decides angle between 0 to 45 degree.
24. electronic installation as claimed in claim 21, it is characterized in that: arithmetic element is by the displacement of this set angle and this first, second incident axle, calculate the displacement component of this determinand on one the 3rd measurement axis, and this first, second and third measurement axis is mutually orthogonal.
25. electronic installation as claimed in claim 24 is characterized in that: when this determinand had this displacement component on the 3rd measurement axis, this control module was judged as one and clicks signal.
26. electronic installation as claimed in claim 20, it is characterized in that: this first light path has one first photoconduction and first polaroid disposed thereon, and the polarity of this first polaroid is this first polarity, this second light path has one second photoconduction and second polaroid disposed thereon, and the polarity of this second polaroid is this second polarity.
27. electronic installation as claimed in claim 26 is characterized in that: also comprise:
One is arranged on the optical coupling unit between this laser diode and this first, second light path, this optical coupling unit is in order to being coupled into this first and second light path with this first, second laser beam, and guides the reflected light of this first, second laser beam and scattered light to draw to enter this resonant cavity again.
28. electronic installation as claimed in claim 26 is characterized in that: also comprise:
One the 3rd light path, the 3rd light path comprise one the 3rd photoconduction and the 3rd polaroid disposed thereon, and to guide one the 3rd laser beam near this surface measurements, the reflected light and the scattered light that reboot the 3rd laser beam reenter this resonant cavity.
29. electronic installation as claimed in claim 28 is characterized in that: when the reflected light of the 3rd laser beam and scattered light entered this resonant cavity, this control module was with the image of displacement component scrolling this screen of this determinand on this first, second measurement axis.
30. electronic installation as claimed in claim 29 is characterized in that: also comprise:
One optical coupling unit, this optical coupling unit is arranged between this laser diode and this first, second and third light path, this optical coupling unit is in order to being coupled into this first, second and third light path with this first, second and third laser beam, and guides the reflected light of this first, second and third laser beam and scattered light to draw to enter this resonant cavity again.
31. electronic installation as claimed in claim 29 is characterized in that: this first, second and the 3rd photoconduction be optical fiber.
32. electronic installation as claimed in claim 20 is characterized in that: this detecting unit is a voltage sensor or current sensor.
33. electronic installation as claimed in claim 20 is characterized in that: this arithmetic element and this control module are incorporated in the microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100819777A CN100394367C (en) | 2004-12-29 | 2004-12-29 | Electronic equipment and method of controlling cursor possessing optical type displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100819777A CN100394367C (en) | 2004-12-29 | 2004-12-29 | Electronic equipment and method of controlling cursor possessing optical type displacement transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797294A true CN1797294A (en) | 2006-07-05 |
| CN100394367C CN100394367C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100819777A Expired - Fee Related CN100394367C (en) | 2004-12-29 | 2004-12-29 | Electronic equipment and method of controlling cursor possessing optical type displacement transducer |
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| Country | Link |
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| CN (1) | CN100394367C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183287B (en) * | 2007-10-23 | 2012-12-26 | 埃派克森微电子有限公司 | Apparatus and method for controlling cursor on screen of host apparatus |
| CN104656895A (en) * | 2015-02-10 | 2015-05-27 | 北京智谷睿拓技术服务有限公司 | Method and device for confirming input information |
| CN111879517A (en) * | 2020-08-31 | 2020-11-03 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465263A (en) * | 1992-12-12 | 1995-11-07 | Xerox Corporation | Monolithic, multiple wavelength, dual polarization laser diode arrays |
| EP0793079B1 (en) * | 1996-02-29 | 2003-06-11 | The Boeing Company | Fiber coupled interferometric displacement sensor |
| ATE463004T1 (en) * | 2000-11-06 | 2010-04-15 | Koninkl Philips Electronics Nv | METHOD FOR MEASURING THE MOTION OF AN INPUT DEVICE |
| US7573463B2 (en) * | 2002-08-29 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Apparatus equipped with an optical keyboard and optical input device |
-
2004
- 2004-12-29 CN CNB2004100819777A patent/CN100394367C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183287B (en) * | 2007-10-23 | 2012-12-26 | 埃派克森微电子有限公司 | Apparatus and method for controlling cursor on screen of host apparatus |
| CN104656895A (en) * | 2015-02-10 | 2015-05-27 | 北京智谷睿拓技术服务有限公司 | Method and device for confirming input information |
| CN104656895B (en) * | 2015-02-10 | 2018-02-02 | 北京智谷睿拓技术服务有限公司 | It is determined that the method and apparatus of input information |
| US10261577B2 (en) | 2015-02-10 | 2019-04-16 | Beijing Zhigu Rui Tuo Tech Co., Ltd. | Method and device for determining input information |
| CN111879517A (en) * | 2020-08-31 | 2020-11-03 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
| CN111879517B (en) * | 2020-08-31 | 2022-02-22 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100394367C (en) | 2008-06-11 |
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