CN201434679Y - Daylighting structure for light-source azimuth detector - Google Patents
Daylighting structure for light-source azimuth detector Download PDFInfo
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- CN201434679Y CN201434679Y CN2009200410871U CN200920041087U CN201434679Y CN 201434679 Y CN201434679 Y CN 201434679Y CN 2009200410871 U CN2009200410871 U CN 2009200410871U CN 200920041087 U CN200920041087 U CN 200920041087U CN 201434679 Y CN201434679 Y CN 201434679Y
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Abstract
The utility model discloses a daylighting structure for a light-source azimuth detector, which comprises a negative holder, wherein a semi-transparent film is arranged inside the negative holder, thetop surface of the negative holder comprises a first top surface, the first top surface is of a herringbone top surface, the herringbone top surface consists of a first inclined plane and a second inclined plane, the included angle between the two inclined planes is 60 to 120 degrees, the included angle between the first inclined plane and a horizontal plane is 30 to 60 degrees, the included anglebetween the second inclined plane and the horizontal plane is 30 to 60 degrees, and the first and the second inclined planes are respectively provided with a first small hole and a second small hole.The daylighting structure has wide detection range, so the detection device can correctly determine the azimuth of a light source without a tracking device, and has the advantages of high test precision, reliable performance, wide application and the like.
Description
Technical field
The utility model relates to a kind of lighting structure of light source azimuth detector, can be used for light source azimuth detection or light source azimuth and follows the tracks of.Be applicable to the sun power utilization, robot vision, a plurality of fields such as vehicle location.
Background technology
Light source direction is surveyed in a lot of fields all application, for example sun power utilization, and robot vision, vehicle location, etc.Be utilized as example with sun power, sun power is a kind of inexhaustible energy, and is a kind of energy of environmental protection, nowadays more and more being used of energy crisis.Yet, the efficient of light-use system is not high, one of them reason is that this just needs us to detect the position of sunlight and makes condenser system aim at sunlight because the height of sunlight and direction in continuous variation, just can not guarantee the maximum luminous energy that receives if condenser system maintains static.For now, the detection of light source direction generally realizes by tracking mode, tracking detector is installed on solar panel or the light collecting device, mechanical system interlock with cell panel, light is radiated on several light activated elements by the direction layout through the barrier structure that designs, by judging whether light activated element can obtain the direct relativeness of aligned position that enough light detects sunlight position and solar panel, make cell panel aim at sunlight by continuous correction.It is to be actually a kind of mode of following the tracks of aligning, can not directly obtain the position of sunlight, and also needs to follow the tracks of drives structure except that detector, the systematic comparison complexity, and can not use separately.
The utility model content
The purpose of this utility model is to provide a kind of position that can directly detect light source and precision height, lighting structure of light source azimuth detector that sensing range is big.
The utility model adopts following technical scheme:
A kind of lighting structure of light source azimuth detector, comprise magazine, in magazine, be provided with semitransparent thin film, the end face that it is characterized in that magazine comprises first end face, described first end face is the herringbone end face, this herringbone end face is made up of first inclined-plane and second inclined-plane, angle between described two inclined-planes is the 60-120 degree, the angle of described first inclined-plane and surface level is the 30-60 degree, the angle of described second inclined-plane and surface level is the 30-60 degree, is respectively equipped with first aperture and second aperture on described first inclined-plane and second inclined-plane.
The utility model is applicable to the sun power utilization, robot vision, a plurality of fields such as vehicle location, its major technique characteristics are: adopt well-designed unique lighting structure, sensing range big (can detect the sunlight position in the normal illumination scope for sunlight) 1..2. adopt shooting and image processing method to obtain image and pass through the image that obtains to accurately calculate light source position.
The utility model compared with prior art has following advantage:
1. sensing range is big, can realize comprehensive detection.As Fig. 6-a, realize comprehensive detection, need position angle A in that (π, π), elevation angle B is in (0, pi/2).Existing lighting structure, as accompanying drawing 6-b, magazine is a square structure, light sees through aperture 15, is radiated on the photo-sensitive cell 17.There is the little problem of investigative range in this structure, and promptly when light source position is low, the light that light can't inject aperture or enter aperture can not form hot spot on photo-sensitive cell 17, thereby can't realize detecting.When getting photo-sensitive cell length of side L, when photo-sensitive cell and end face distance were H, there was dead angle γ in lighting structure, γ is arctan (2H/L), and the detectable light source elevation angle of promptly this equipment is (γ, a pi/2), this structure can not realize comprehensive detection, so generally can only be used for the system of tracking mode.And adopt structure described in the utility model, structure as shown in Figure 2, its daylighting scope shown in accompanying drawing 6-c, the sensing range horizontal azimuth be (α, α) and α greater than π, but so detection side's parallactic angle (π, π), for elevation angle, as get semitransparent thin film length of side L, semitransparent thin film and oblique top identity distance are when H, detectable elevation angle is (arctan (2H/L)-pi/2, π-arctan (2H/L)), and wherein arctan (2H/L)-pi/2 is a negative value, π-arctan (2H/L) is greater than pi/2, be that detectable elevation angle surpasses (0, pi/2), so, this structure detection scope is big, can realize comprehensive detection.
2. lighting structure adopts full-closed structure, can water proof and dust proof, be more suitable for open-air use.
3. directly draw light source azimuth and be used for control being presented on the LED screen and being sent to control circuit with the form of data.
4. do not rely on the follow-up machinery device, can independently use, and effectively avoided the power consumption that adopts tracking means to cause.
5. of many uses.Sun power utilizes, robot vision, vehicle location etc.
Description of drawings
Fig. 1 is the lighting structure synoptic diagram that is used for the sunlight orientation detection, and wherein (a) front view is that side view (c) top view (d) is a schematic perspective view (b).
Fig. 2 is the lighting structure synoptic diagram that is used for the point light orientation detection.Wherein (a) front view is that side view (c) top view (d) is a schematic perspective view (b).
Fig. 3 is a daylighting scope synoptic diagram.Wherein (a) is that detectable azimuth coverage (b) is detectable elevation angle scope
Fig. 4 is the light path synoptic diagram.
Fig. 5 is light source azimuth sniffer system global structure figure.
Fig. 6 is the investigative range comparison diagram of this lighting structure and existing lighting structure.Wherein (a) is that the detectable scope of existing structure (b) is the utility model detectable scope of lighting structure
Embodiment
A kind of lighting structure of light source azimuth detector, comprise magazine 1, in magazine 1, be provided with semitransparent thin film 6, the end face of magazine 1 comprises first end face, described first end face is the herringbone end face, this herringbone end face is made up of first inclined-plane 2 and second inclined-plane 3, angle between described two inclined-planes is the 60-120 degree, described first inclined-plane 2 is the 30-60 degree with the angle of surface level, described second inclined-plane 3 is the 30-60 degree with the angle of surface level, is respectively equipped with first aperture 9 and second aperture 10 on described first inclined-plane 2 and second inclined-plane 3.
In an embodiment,
Described semitransparent thin film 6 is parallel with first inclined-plane 2 and second inclined-plane 3 respectively for the herringbone face that is made of 2 inclined-planes and described 2 inclined-planes that constitute the herringbone face;
The end face of the magazine 1 of present embodiment is by first end face that is positioned at front end and be positioned at rear end second end face and form, described second end face is the herringbone end face and is made up of the 3rd inclined-plane 4 and the 4th inclined-plane 5, angle between described two inclined-planes is the 60-120 degree, described the 3rd inclined-plane 4 is the 30-60 degree with the angle of surface level, described the 4th inclined-plane 5 is the 30-60 degree with the angle of surface level, on described the 3rd inclined-plane 4 and the 4th inclined-plane 5 be respectively equipped with the 3rd aperture 7 and the 4th aperture 8, described first end face turns forward, and described second end face recedes;
The aperture of described first aperture 9, second aperture 10, the 3rd aperture 7 and the 4th aperture 8 is 0.5-5mm, is coated with high transmission rate coated glass thin slice or the transparent resin thin slice that is used to block dust and rainwater on first aperture 9, second aperture 10, the 3rd aperture 7 and the 4th aperture 8.
Described semitransparent thin film 6 be thickness at 0.5mm with interior matt semitransparent thin film.
Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.
Example one (this sniffer detects the embodiment in sunlight orientation):
System global structure as shown in Figure 4, light is shot image through the lighting structure collection by camera, last treated processing of circuit image also calculates light source azimuth.
2. lighting structure part.Adopt the structure as accompanying drawing 1, special lighting structure is made up of magazine 1 that has aperture and semitransparent thin film 6.The magazine top is two inclined-planes, mutually at an angle, respectively opens an aperture 9,10 on the inclined-plane.Below, inclined-plane certain distance is furnished with one deck semitransparent thin film, and is parallel with the inclined-plane respectively.Light shines through small holes and forms a brighter luminous point on the semi-transparent film.Two perforate inclined-plane angles are that 120 degree and horizontal direction angle are 45 degree.With ground observation point, the sunlight elevation angle changes between the 0-90 degree all the time.And solar azimuth has following rule: the position angle with Due South to serving as zero, by south east northwards for negative, by the south orientation west northwards for just, in positive east, the position angle is-90 ° as the sun, when positive north-east, the orientation is-135 °, and the position angle is 90 ° when positive west, is ± 180 ° when the positive north.In fact the sun always east rises the west and falls, only in the two days Autumnal Equinox of the Spring Equinox, the sun is from positive east liter, just the west falls.On the Northern Hemisphere, in the summer half year from the Spring Equinox to the Autumnal Equinox, the sun is from the direction liter (position angle is-90 ° to-180 °) of east by north, and (position angle is between 90 ° to 180 °) falls in west by north direction; And from the Autumnal Equinox to next year the winter half year in the Spring Equinox, the sun is from the direction liter (position angle is-90 ° to 0 °) of east by south, and (position angle is between 0 ° to 90 °) falls in west by south direction.With northern area Heilungkiang of China and area, the most southern Hainan is example, the variation range of the position angle of the sun in 1 year generally spend-120+120 degree between.As Fig. 3, as to get a side semitransparent thin film length of side L be 10cm, and film is 1cm apart from the distance H in hole, then calculate can cover sun altitude β by said structure and be about-34 and spend between 124 degree, azimuth angle alpha for-124 spend spend to 124 between.Therefore, adopt this structure can better accept light, can survey the sunlight orientation in the normal range.Two inclined-planes of magazine are the opened round aperture respectively, the about 2mm of diameter, and high transmission rate coated glass thin slice or transparent resin sheet covers are arranged, block dust and rainwater.Two aperture belows are provided with one deck semitransparent thin film at a certain distance.Sunlight projects through via hole can form a comparatively bright luminous point on the semi-transparent film.
3. camera video acquisition part.Video acquisition adopts one piece of valid pixel mega pixel level camera to take, and camera is taken over against semitransparent thin film, and shooting picture is transferred in the storer of image processing circuit plate by USB cable.
4. video processing part.As accompanying drawing 4-a, light is radiated at wherein through aperture and forms a bright spot 20 on a slice semitransparent thin film, therefore the pattern that collects is the dark-coloured picture that has luminous point, this picture such as direct service precision are relatively poor, and therefore, we adopt treatment circuit that this picture is handled, obtain spot pattern more clearly, concrete steps for example adopt Laplce's algorithm at first finding out the hot spot edge, and the location of pixels information of the hot spot marginal point that finds (XY coordinate) is saved in the internal memory.The scope of extracting this edge then and being surrounded is with each interior pixel brightness value A and positional information (XY coordinate), and by calculating center of gravity, promptly formula calculates the accurate center (X, Y coordinate) of hot spot.Can calculate by following formula:
(wherein n is regional interior pixel sum, and Xi is each pixel X coordinate in the zone, and Yi is each pixel Y coordinate in the zone, and Ai is each pixel brightness value in the zone).Be applied on the sun light tracking, the speed of processing of circuit can be provided with, and according to the requirement of tracking accuracy and speed, the sampling period can be 10 seconds-30 minutes.What need to replenish is, more placed in the middle when sunniness direction, as accompanying drawing 4-b, can produce two hot spots 21,22, and treatment circuit is got one of them hot spot and handled.
5. obtain after the spot center, calculate the orientation (with respect to sensor) of light source by geometric relationship.As being reference coordinate with an inclined-plane, get film length L, distance H, the optical spot centre coordinate be (X, Y), then under this coordinate system the sunlight position vector be (a, b, c), wherein
If the plane equation on this inclined-plane is Ax+By+Cz=0 on the magazine, its normal vector be (A, B, C) therefore, the solar azimuth elevation angle is for arriving (A ,-B through (0,0,0), (a ', b ', c ') after-C) the rotation of coordinate is converted to elevation angle β and azimuth angle alpha and is:
Example two (this sniffer detects the embodiment in point light orientation):
System global structure as shown in Figure 4, light is shot image through the lighting structure collection by camera, last treated processing of circuit image also calculates light source azimuth.
2. lighting structure part.The end face of magazine 1 is by first end face that is positioned at front end and be positioned at rear end second end face and form, described second end face is the herringbone end face and is made up of the 3rd inclined-plane 4 and the 4th inclined-plane 5, angle between described two inclined-planes is the 60-120 degree, described the 3rd inclined-plane 4 is the 30-60 degree with the angle of surface level, described the 4th inclined-plane 5 is the 30-60 degree with the angle of surface level, be respectively equipped with aperture 7,8 on described the 3rd inclined-plane 4 and the 4th inclined-plane 5, described first end face and second end face respectively forward, recede.Each aperture below is provided with one deck semitransparent thin film at a certain distance, and is parallel with each inclined-plane respectively.Sunlight projects through via hole can form a comparatively bright luminous point on the semi-transparent film.Adopt this structure can realize comprehensive detection to point light, shown in accompanying drawing 6-c, the sensing range horizontal azimuth is (α, α) and α surpasses π, but so detection side's parallactic angle (π, π), for elevation angle, as the same semitransparent thin film length of side L that gets, semitransparent thin film and oblique top identity distance are when H, detectable elevation angle is (arctan (2H/L)-pi/2, π-arctan (2H/L)), wherein arctan (2H/L)-pi/2 is a negative value, and π-arctan (2H/L) is greater than pi/2, be that detectable elevation angle surpasses (0, pi/2).
3. the implementation method of the part of video acquisition and Flame Image Process is with example one.
Claims (5)
1. lighting structure of light source azimuth detector, comprise magazine (1), in magazine (1), be provided with semitransparent thin film (6), the end face that it is characterized in that magazine (1) comprises first end face, described first end face is the herringbone end face, this herringbone end face is made up of first inclined-plane (2) and second inclined-plane (3), angle between described two inclined-planes is the 60-120 degree, described first inclined-plane (2) is the 30-60 degree with the angle of surface level, described second inclined-plane (3) is the 30-60 degree with the angle of surface level, is respectively equipped with first aperture (9) and second aperture (10) on described first inclined-plane (2) and second inclined-plane (3).
2. lighting structure of light source azimuth detector according to claim 1 is characterized in that semitransparent thin film (6) is parallel with first inclined-plane (2) and second inclined-plane (3) respectively for the herringbone face that is made of 2 inclined-planes and described 2 inclined-planes that constitute the herringbone face.
3. lighting structure of light source azimuth detector according to claim 1, the end face that it is characterized in that magazine (1) is by first end face that is positioned at front end and be positioned at rear end second end face and form, described second end face is the herringbone end face and is made up of the 3rd inclined-plane (4) and the 4th inclined-plane (5), angle between described two inclined-planes is the 60-120 degree, described the 3rd inclined-plane (4) is the 30-60 degree with the angle of surface level, described the 4th inclined-plane (5) is the 30-60 degree with the angle of surface level, on described the 3rd inclined-plane (4) and the 4th inclined-plane (5) be respectively equipped with the 3rd aperture (7) and the 4th aperture (8), described first end face turns forward, and described second end face recedes.
4. lighting structure of light source azimuth detector according to claim 1, the aperture that it is characterized in that first aperture (9), second aperture (10), the 3rd aperture (7) and the 4th aperture (8) is 0.5-5mm, is coated with high transmission rate coated glass thin slice or the transparent resin thin slice that is used to block dust and rainwater on first aperture (9), second aperture (10), the 3rd aperture (7) and the 4th aperture (8).
5. lighting structure of light source azimuth detector according to claim 1 is characterized in that, semitransparent thin film (6) be thickness at 0.5mm with interior matt semitransparent thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200410871U CN201434679Y (en) | 2009-04-10 | 2009-04-10 | Daylighting structure for light-source azimuth detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009200410871U CN201434679Y (en) | 2009-04-10 | 2009-04-10 | Daylighting structure for light-source azimuth detector |
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| CN201434679Y true CN201434679Y (en) | 2010-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110839324A (en) * | 2018-08-15 | 2020-02-25 | 北京小米移动软件有限公司 | Terminal device |
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2009
- 2009-04-10 CN CN2009200410871U patent/CN201434679Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110839324A (en) * | 2018-08-15 | 2020-02-25 | 北京小米移动软件有限公司 | Terminal device |
| CN110839324B (en) * | 2018-08-15 | 2021-08-03 | 北京小米移动软件有限公司 | Terminal device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100331 Effective date of abandoning: 20090410 |