CN103135764B - Movement detection device - Google Patents
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- CN103135764B CN103135764B CN201310036175.3A CN201310036175A CN103135764B CN 103135764 B CN103135764 B CN 103135764B CN 201310036175 A CN201310036175 A CN 201310036175A CN 103135764 B CN103135764 B CN 103135764B
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Abstract
The present invention relates to a kind of movement detection device, this device is in order to detect the movement of object in spatial dimension.Described movement detection device comprises light source, light-guide device, at least two photo-sensitive cells and processing unit.Described photo-sensitive cell forms dislocation at first direction, sequentially reflects the light of described light source to described photo-sensitive cell when moving in described spatial dimension to make described object through described light-guide device.Described processing unit judges the movement of described object at described first direction according to the order of described photosensitive elements sense reflection ray.
Description
The divisional application that the present invention is the applying date is on May 21st, 2010, application number is 201010182558.8, denomination of invention is the Chinese patent application of " movement detection device ".
Technical field
The present invention relates to a kind of movement detection device, it utilizes the three-dimensional motion of a light source and multiple photo-sensitive cell judgment object.
Background technology
Current movement detection device only can detect the movement presenting rough parallel direction with movement detection device.For example, there is the mobile phone of movement detection device, if this mobile phone is positioned in a plane and this plane definition is an XY plane, the then movement detection device of this mobile phone, only can detect the mobile object in XY direction, such as, brandish gesture relative to the rough one-tenth parallel direction of this mobile phone.This is because the sensor that current movement detection device configures is used for detecting object whether cover sensor, be aided with simultaneously and multiple sensor is set, above the sensor whether being shielded in movement detection device when operating by the movement of object sensing and the order of multiple sensor crested, carry out the moving direction of judgment object.This type of movement detection device designs for detecting planar movement, therefore for perpendicular to predetermined detecting plane (if for XY plane, be then Z-direction) object of movement, do not change the drop shadow effect of object at movement detection device because this moves, therefore existing movement detection device cannot make a reservation in vertical the action detecting in-plane by judgment object effectively.
In view of this, a kind of movement detection device simultaneously can detecting the three-dimensional motion in spatial dimension is needed in detecting system field badly.
Summary of the invention
The object of the present invention is to provide a kind of movement detection device, this device can detect the movement of object in a plane, and this plane is rough is parallel to described movement detection device, also can detect the action of object in the direction of vertical described plane.Trigger a specific instruction by detecting object in the movement of described plane, and carry out subsequent treatment and/or controlling mechanism according to this command content; By the action of detecting object in the direction of vertical described plane, the relative distance detecting object and described movement detection device changes to trigger another specific instruction, and carries out another subsequent treatment and/or controlling mechanism according to this command content.
The object of the present invention is to provide a kind of movement detection device, it can define a three dimensions scope in space, and detects the action of object in this three dimensions scope.
For reaching above-mentioned purpose, the present invention proposes a kind of movement detection device, and this device is in order to detect the movement of object in spatial dimension.Described movement detection device comprises light source, light-guide device, at least two photo-sensitive cells and processing unit.Described photo-sensitive cell forms dislocation at first direction, sequentially reflects the light of described light source to described photo-sensitive cell when moving in described spatial dimension to make described object through described light-guide device.Described processing unit judges the movement of described object at described first direction according to the order of described photosensitive elements sense reflection ray.
The present invention separately proposes a kind of movement detection device, and this device is in order to detect the action of object.Described movement detection device comprises along the light source of an optical axis luminescence, light-guide device, at least two photo-sensitive cells and processing unit.Described photo-sensitive cell forms dislocation at first direction and second direction, and senses the reflection ray of light source described in reflections off objects described in the spatial dimension of described light source front one through described light-guide device.Described processing unit judges the action of described object along described optical axis according to the brightness change of described photosensitive elements sense reflection ray.
The present invention separately proposes a kind of movement detection device, and this device is in order to detect the action of object.Described movement detection device comprises light source, light-guide device, photo-sensitive cell and processing unit.Described photo-sensitive cell senses the reflection ray of light source described in reflections off objects described in the spatial dimension of described light source front one through described light-guide device.Described processing unit judges the action of described object according to the described object number of times come across in described spatial dimension in the brightness change of described photosensitive elements sense reflection ray and a Preset Time.
In movement detection device of the present invention, described light source is luminous with a lighting angle, and the spatial dimension that can detect is by described lighting angle, described photo-sensitive cell, and the distance of distalmost end and the spatial relationship of described light source and described light-guide device determined each other.
Accompanying drawing explanation
Fig. 1 shows the movement detection device of the first embodiment of the present invention.
Fig. 2 shows the movement detection device of the second embodiment of the present invention.
Fig. 3 shows the movement detection device of another embodiment of the present invention.
Fig. 4 shows schematic diagram during movement detection device continued operation of the present invention.
Main element symbol description
11 light source 12 light-guide devices
13 sensing apparatus 131 ~ 133 photo-sensitive cells
13a sensing apparatus overlooks layout 14 object
The end points of end points 14b, 14b of 14a, 14a ' object ' object
15 processing unit 101,103,105 light
Embodiment
Below will explain content of the present invention by embodiment, it relates to a kind of movement detection device, and it comprises light source, light-guide device and at least two photo-sensitive cells.When object relative to movement detection device carry out horizontal direction move time, this object can sequentially and little by little by light reflection to photo-sensitive cell, judgment object is in the movement of horizontal direction by this; When object relative to movement detection device carry out longitudinal direction move time, photo-sensitive cell can sense reflection ray brightness change, judgment object is in the action of longitudinal direction by this.But, embodiments of the invention and be not used to restriction the present invention can need implement in any specific environment as described embodiments, application or particular form.Therefore, the explanation about embodiment is only explaination object of the present invention, and is not used to limit the present invention.It should be noted that, following examples and graphic in, the element relevant to non-immediate of the present invention omits and does not illustrate; And for the purpose of asking and easily understanding, each interelement size relationship is that the scale slightly exaggerated goes out.
Fig. 1 shows the movement detection device of first embodiment of the invention, and it comprises light source 11, light-guide device 12, sensing apparatus 13 and processing unit 15, and it can be included within described sensing apparatus 13 or independent of outside it.Described light source 11 in the present embodiment for an infrared ray (IR) light source so that explanation.Described light-guide device 12 in the present embodiment for lens so that explanation.In the present embodiment, described sensing apparatus 13 has three photo-sensitive cells 131,132 and 133, but the number of photo-sensitive cell and be not used to limit the present invention.What Fig. 1 depicted sensing apparatus 13 simultaneously overlooks layout 13a, photo-sensitive cell 131,132 and 133 layout to be in the present embodiment described.Described processing unit 15 is coupled to described photo-sensitive cell 131,132 and 133, carrys out the action of judgment object with the electric signal sent according to it.
In the present embodiment, the optical axis of light source 11 light emission direction is set as Z-direction and has a lighting angle θ.When object 14 is positioned at light emission direction (front) of light source, the light 101 that light source 11 sends can be irradiated to a surface of object 14, and because texture and the material on surface producing many reflection rays, wherein a part of reflection ray 103 is understood and is projected to sensing apparatus 13 by light-guide device 12.As we know from the figure, when object 14 is positioned at height D, will form one in sensing apparatus 13 from the reflection ray of object 14 reflection through light element 12 can detection area.After sensing principle of the present invention will be specified in.
The light-guide device 12 of the present embodiment is such as lens, and it has a focal distance f.Assuming that the center of light-guide device 12 and object 14 can the distance of one end 14a of reconnaissance range be L2, can the other end 14b(far-end of reconnaissance range with object 14) distance be L1, and be L with the center distance of light source 11.In addition, the front end of light source 11 and the spacing of object 14 are D, suppose that light source 11, light-guide device 12 are X-direction with the horizontal direction of sensing apparatus 13 layout simultaneously.Then can draw following equation according to trigonometric function:
L1=L+D × tan(θ/2) formula 1; And
L2=L-D × tan(θ/2) formula 2
Assuming that being projeced into the position of sensing apparatus 13 and light-guide device 12 in the spacing of X-direction from the reflection ray 103 of 14b is X
1; Being projeced into the position of sensing apparatus 13 and light-guide device 12 in the spacing of X-direction from the reflection ray 103 of 14a is X
2, therefore be can be derived from by formula 1 and 2
(D/L1)=(f/X
1) formula 3; And
(D/L2)=(f/X
2) formula 4
So, just can by information such as known D, L1, L2 and f, push away to obtain the relativeness of photo-sensitive cell 131 ~ 133 position that should arrange and light-guide device 12; In other words, can determine according to the lighting angle θ of light source 11, the layout of photo-sensitive cell 131 ~ 133 and light source 11 and the spatial relationship of light-guide device 12 spatial dimension that object 14 should operate.So, photo-sensitive cell 131 ~ 133 just can when object 14 moves towards X-direction in aforementioned precalculated position, sequentially sense the variation of the light 103 reflected from object 14, described processing unit 15 judgment objects 14 sense the order of reflection ray, with the movement of judgment object 14 in X-direction, the judgment mode in like manner in Y-direction movement is also identical.After detailed sense operation is illustrated in.
Similarly, with reference to overlooking layout 13a, the putting position of photo-sensitive cell 131 ~ 133, that photo-sensitive cell 133 to be arranged in pairs or groups the movement in X-direction and Y-direction of simultaneously object sensing 14 with photo-sensitive cell 132 and/or 131, wherein Y-direction is be positioned to overlook perpendicular to X-direction direction on layout 13a, and such as photo-sensitive cell 132 and 133 forms dislocation in the Y direction in X-direction dislocation-free (offset); And photo-sensitive cell 132 and 133 all forms dislocation with photo-sensitive cell 131 in X-direction and Y-direction respectively; By this, the layout of photo-sensitive cell 131 and 132 or 131 and 133, can object sensing 14 in the plane in vertical Z direction (such as, X-direction) movement, and the layout of photo-sensitive cell 132 and 133, can object sensing movement of (such as, Y-direction) in the plane in vertical Z direction.Easy speech it, during single direction mobile, only need two photo-sensitive cells to reach object when sensing apparatus 13 only needs object sensing 14 in the plane in vertical Z direction.If use the distribution of the photosensitive elements sense reflection ray of higher sensing sensitivity, two photo-sensitive cells are also only needed to get final product the movement of judgment object in the plane (such as, XY plane) in vertical Z direction.
Fig. 2 shows the movement detection device of second embodiment of the invention, its from first embodiment main different be in, movement detection device in space Z-direction define one can reconnaissance range, that is object 14 can reconnaissance range be from being D to D with the front end of light source 11 and the spacing of object 14
1spatial dimension, therefore object 14 can reconnaissance range one end 14a ' with the other end 14b ' (far-end) of reconnaissance range can will distinguish reflection ray 105, and by the position X of ray cast in sensing apparatus 13
2' with X
1' (with the lateral separation at light-guide device 12 center).For making object 14 at D to D
1spatial dimension in time, the movement towards X-direction and Y-direction all can be detected, then photo-sensitive cell 131 ~ 133 is on the placement border of horizontal direction, should with X
2and X
1' be boundary, can D to D be sensed to make photo-sensitive cell 131,132 and/or 131
1spatial dimension in the reflection ray of object 14 at least partially.
When object 14 moves in Z-direction, because the brightness being projected to sensing apparatus 13 also can change thereupon, therefore can detect the action of object 14 in Z-direction accordingly, such as when object 14 by D towards D
1time mobile, the brightness that sensing apparatus 13 senses is gradually little and work as object 14 by D
1when moving towards D, the brightness that sensing apparatus 13 senses is gradually large.From in figure, X
2with X
1' distance, the lighting angle θ of light source 11 and light source 11 and the spatial relationship of light-guide device 12 determine the spatial dimension detected of movement detection device, its three dimensions for being defined by X-direction, Y-direction and optical axis.Such as X
2with X
1' distance can define one and longitudinally can detect distance (D
1-D), when object 14 can be detected apart from time outer longitudinal, movement detection device then cannot detect any object.This characteristic makes movement detection device of the present invention can detect the action of object 14 at longitudinal direction; Such as processing unit 15 can sense the action that brightness changes and in a Preset Time, the object number of times come across in described spatial dimension carrys out judgment object 14 of reflection ray according to photo-sensitive cell 131 ~ 133, and wherein said Preset Time can decide according to practical application.In a kind of embodiment, the brightness change such as judged in described Preset Time when processing unit 15 occurs once by secretly to brighten and once by bright dimmed, then be judged as one click (click) action, in another embodiment, when described processing unit 15 judge brightness change appearance twice in described Preset Time by secretly brighten and twice by bright dimmed, then be judged as the action of once double-clicking (doubleclick), but the present invention longitudinal action of judgment object can be not limited to this.By this, the present invention can improve the existing problem that cannot judge longitudinal action.
Compared to the first embodiment, X in Fig. 2 can be found
2with X
1' spacing be less than X in Fig. 1
2with X
1spacing, if therefore the translational speed of object 14 is very fast, then under identical hardware condition, photo-sensitive cell 131 and 132(133 due to the first embodiment) spacing larger, therefore have compared with plenty of time to detect the movement of object 14, in the performance of detecting object movement fast, the second embodiment will be better than.But the second embodiment can be detected object and contain from D to D at the mobile space of vertical Z direction plane
1height, as long as that is object be positioned at D to D
1in the altitude range of height, not only object X-direction and Y-direction movement can sensed device 13 to detect and increase can opereating specification, also can detect the action of object in Z-direction to increase the practicality of movement detection device, therefore be better than the first embodiment.Therefore, the layout of photo-sensitive cell, can adjust to some extent depending on application scenario.
In addition, when wanting to utilize movement detection device of the present invention to detect longitudinal action of facing light sources (such as, click or double-click), also a photo-sensitive cell only can be set, as shown in Figure 3.Movement detection device comprises light source 11, light-guide device 12, sensing apparatus 13 and processing unit 15, and wherein sensing apparatus 13 only arranges a photo-sensitive cell 131.Processing unit 15 senses the action (similar with Fig. 2) that brightness changes and in a Preset Time, object 14 comes across the number of times judgment object 14 in spatial dimension of reflection ray according to photo-sensitive cell 131.In the present embodiment, described spatial dimension can determine with the spatial relationship (such as, distance L) of light-guide device 12 according to the size of the lighting angle of light source 11, photo-sensitive cell 131 and light source 11.
Fig. 4 depicts the schematic diagram of sensing apparatus continued operation of the present invention further.Horizontal time shaft represents the time through out-of-date, and the relative position relation of object 14 and sensing apparatus 13 and photo-sensitive cell 131,132,133, what also show photo-sensitive cell 131,132,133 in the present embodiment overlooks layout 13a, to illustrate.
When time t0, object 14(is the palm of user in the present embodiment) not yet through light source 11, therefore photo-sensitive cell 131,132 and 133 not yet receives reflection ray.Then during time t1, object 14 starts the light emitting region entering light source 11, and therefore photo-sensitive cell 131 receives reflection ray and photo-sensitive cell 132 and 133 does not receive reflection ray.Along with time process gradually, when time t2, the part that object 14 enters light source 11 light emitting region also increases, and therefore photo-sensitive cell 131,132 and 133 all receives reflection ray, and wherein photo-sensitive cell 132 and 133 only partly receives reflection ray.Until time t3, the light that object 14 reflects contains photo-sensitive cell 131,132 and 133 completely.Then object 14 gradually away from, at time t4, photo-sensitive cell 131 starts cannot receive reflection ray gradually.At time t5, only photo-sensitive cell 132 and 133 receives reflection ray.Until time t6, object 14 leaves the light emitting region of light source 11 completely, and photo-sensitive cell 131,132 and 133 returns to again the state not receiving reflection ray.Photo-sensitive cell produces electric signal after receiving reflection ray, and sensing apparatus is namely according to the direction of this electric signal judgment object movement.Be understandable that, sensing apparatus 13 judges that an object is simultaneously similar to Figure 3 in the mode of the movement of the both direction of a plane.
Furthermore, in the aforementioned embodiment, photo-sensitive cell 131,132 and 133 can sense the distribution of reflection ray, therefore can in the occasion only suitably arranging two photo-sensitive cells, such as utilize in the present embodiment the photo-sensitive cell 131 and 132 that staggers and put or photo-sensitive cell 131 and 133 wherein one distribute, get final product judgment object 14 in the movement of single direction.In addition, also can increase more Multi sensor, though do not affect the effect of basic operation, sensing effect can be made more accurate.
In the aforementioned embodiment, though light-guide device 12 illustrates for lens, it is mainly emphasizes that reflection ray 103 concentrates on the effect of sensing apparatus 13 through light-guide device 12; In other embodiments, if light-guide device 12 is for having the suitable object of a trickle pin hole, also reflection ray 103 and 105 can be made to be radiated on sensing apparatus 13, by corresponding amendment, also can the configuration relation of corresponding adjustment photo-sensitive cell, but the configuration of photo-sensitive cell is still restriction with foregoing boundary conditions.
As seen from the above embodiment, key character of the present invention, by multiple photo-sensitive cell at different time time, the reflection light quantity difference sensed, is used as the benchmark of judgment object moving direction.And the result of judgment object moving direction, the specific instruction of the mobile triggering one of this object can be made, to carry out subsequent treatment and/or controlling mechanism according to this command content.For example, movement detection device of the present invention, can be applicable to portable apparatus, and such as notebook computer, mobile phone, also can be applicable to desktop apparatus, such as TV, PC, or can be applicable to game machine etc.When opening mobile detection function, specific instruction can be triggered by the movement of limbs or object, such as, when being applied in notebook computer, when browsing photograph, photograph can be stirred by gesture, at editing files or when browsing webpage, scroll through pages etc. can be carried out by gesture, application not restriction of the present invention.
Although the present invention disclosed by previous embodiment, so itself and be not used to limit the present invention, any the ordinary technical staff in the technical field of the invention, without departing from the spirit and scope of the present invention, should make various changes and amendment.Therefore the scope that protection scope of the present invention should define with appended claims is as the criterion.
Claims (7)
1. a movement detection device, in order to detect the movement of object in spatial dimension, this movement detection device comprises:
Light source, this light source is luminous with a lighting angle;
Light-guide device;
First photo-sensitive cell, the second photo-sensitive cell and the 3rd photo-sensitive cell, described first photo-sensitive cell and described second photo-sensitive cell form dislocation in first direction dislocation-free in second direction, described first photo-sensitive cell and described second photo-sensitive cell all form dislocation with described 3rd photo-sensitive cell at described first direction and described second direction respectively, the vertical described second direction of wherein said first direction; And
Processing unit, this processing unit judges the movement of described object in described first direction and described second direction according to the order of described first photo-sensitive cell, described second photo-sensitive cell and described 3rd photosensitive elements sense reflection ray;
Wherein, described spatial dimension determined by described lighting angle, described first photo-sensitive cell, described second photo-sensitive cell and the described layout of the 3rd photo-sensitive cell and the spatial relationship of described light source and described light-guide device.
2. movement detection device according to claim 1, wherein, described light-guide device is lens or the object with pin hole.
3. movement detection device according to claim 1, wherein, described layout is the distance of described first photo-sensitive cell, described second photo-sensitive cell and described 3rd photo-sensitive cell distalmost end each other.
4. movement detection device according to claim 1, wherein, described light source is infrared light sources.
5. the movement detection device any one of claim 1-4 described in claim, wherein, described movement detection device is applied to portable apparatus or desktop apparatus.
6. the movement detection device any one of claim 1-4 described in claim, wherein, the movement of described first direction and described second direction is in order to trigger a specific instruction.
7. a movement detection device, in order to detect the movement of object in spatial dimension, this movement detection device comprises:
Light source, this light source is luminous with a lighting angle;
Light-guide device;
First photo-sensitive cell, the second photo-sensitive cell and the 3rd photo-sensitive cell, described first photo-sensitive cell and described second photo-sensitive cell form dislocation in first direction dislocation-free in second direction, described first photo-sensitive cell and described second photo-sensitive cell all form dislocation with described 3rd photo-sensitive cell at described first direction and described second direction respectively, the vertical described second direction of wherein said first direction; And
Processing unit, this processing unit judges the movement of described object in described first direction and described second direction according to the order of described first photo-sensitive cell, described second photo-sensitive cell and described 3rd photosensitive elements sense reflection ray, and this processing unit also judges the distance change of the relatively described light source of described object according to the brightness change of described photosensitive elements sense reflection ray;
Wherein, described spatial dimension determined by described lighting angle, described first photo-sensitive cell, described second photo-sensitive cell and the described layout of the 3rd photo-sensitive cell and the spatial relationship of described light source and described light-guide device, and described layout is the distance of described first photo-sensitive cell, described second photo-sensitive cell and described 3rd photo-sensitive cell distalmost end each other.
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| CN201310036175.3A CN103135764B (en) | 2010-01-21 | 2010-05-21 | Movement detection device |
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| CN201010001284.8 | 2010-01-21 | ||
| CN201010001284 | 2010-01-21 | ||
| CN201310036175.3A CN103135764B (en) | 2010-01-21 | 2010-05-21 | Movement detection device |
| CN 201010182558 CN102135795B (en) | 2010-01-21 | 2010-05-21 | Movement detection device |
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| CN105070034B (en) * | 2015-08-20 | 2018-11-13 | 汕头市伸达电子科技有限公司 | Object moving direction sensing device |
| US11507097B2 (en) * | 2018-02-05 | 2022-11-22 | Pixart Imaging Inc. | Control apparatus for auto clean machine and auto clean machine control method |
| US10704904B2 (en) * | 2018-03-20 | 2020-07-07 | Pixart Imaging Inc. | Distance detection device |
| TWM609837U (en) * | 2020-10-28 | 2021-04-01 | 李寬裕 | Optical Deworming Equipment |
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| CN1877507A (en) * | 2005-06-10 | 2006-12-13 | 原相科技股份有限公司 | Optical pointing device with shading element |
| CN101464753A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display device |
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| JP3868621B2 (en) * | 1998-03-17 | 2007-01-17 | 株式会社東芝 | Image acquisition apparatus, image acquisition method, and recording medium |
| US6057540A (en) * | 1998-04-30 | 2000-05-02 | Hewlett-Packard Co | Mouseless optical and position translation type screen pointer control for a computer system |
| CN101295218A (en) * | 2007-04-25 | 2008-10-29 | 洪丽民 | Control device and method of electronic equipment |
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| CN1877507A (en) * | 2005-06-10 | 2006-12-13 | 原相科技股份有限公司 | Optical pointing device with shading element |
| CN101464753A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display device |
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