CN107092275A - Solar sensing device and sensing method thereof - Google Patents
Solar sensing device and sensing method thereof Download PDFInfo
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- CN107092275A CN107092275A CN201710196138.7A CN201710196138A CN107092275A CN 107092275 A CN107092275 A CN 107092275A CN 201710196138 A CN201710196138 A CN 201710196138A CN 107092275 A CN107092275 A CN 107092275A
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- 230000000873 masking effect Effects 0.000 claims description 78
- 230000000712 assembly Effects 0.000 claims description 57
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- 241001424688 Enceliopsis Species 0.000 claims description 48
- 238000005286 illumination Methods 0.000 claims description 30
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
Abstract
The present invention relates to a solar sensing device for detecting the irradiation direction of solar rays. The shell is controlled by a displacement mechanism to displace. The local light shielding component is arranged on the shell, and the sunlight irradiates one side of the local light shielding component. The light sensor is arranged on the shell and positioned on the other side of the local light shielding component, the light sensor receives and senses sunlight, the local light shielding component shields part of the sunlight to form a shielding dark area on the light sensor, and the shielding dark area shifts along with the displacement of the irradiation direction to enable the light sensor to output a voltage error signal. The control processor is electrically connected with the optical sensor and controls the displacement of the shell according to the voltage error signal, so that the shading area is positioned in the center of the optical sensor. Therefore, the light direction is detected by using a black spot shading mode, and the structure is simple and the accuracy is high.
Description
【Technical field】
The present invention is, on a kind of sun sensing device further and its method for sensing, light to be realized using shading mode especially with regard to one kind
Sun sensing device further and its method for sensing that line is followed the trail of.
【Background technology】
Since ancient times, people always have many imaginations to the outer space, and think that the operation of celestial body will influence personal or even country
Luck tendency trend, therefore astronomy, astrometry are all an important knowledge all the time.However, astronomical research, astrometry
Basic homework be that for a long time observe, follow the trail of daily celestial body position, will could observe afterwards, follows the trail of with measurement
To position of heavenly body and time, solar term between relation noted down and analyzed, so as to concluding chronometer phenomenon throughout the year
Change.Typically when observing celestial body, the most-often used device arrived is exactly telescope.And in order to be able to effectively observe and follow the trail of the sun
State, many miscellaneous sun sensing device further combination telescopes are proposed that it is in real time and smart to be carried out to the sun in succession
Really follow the trail of and align.
There are a kind of known techniques at present, the tracking of sunshine is set on its optical axis by the reflected light of sun sensing device further
Guide rail, and in the coaxial upper installation optical telescope for the lead rail axis for following the trail of guide rail, reflection is confirmed to estimate using optical telescope
After the direction of illumination of light, the side of lead rail axis of the above-mentioned tracking guide rail of amendment in the way of making direction of illumination be located at appropriate position
To, thereby correct sun sensing device further direction.However, when the reflected light of sunshine being come into optically focused using sun sensing device further,
Due to usually using multiple sun sensing device furthers, thus need respectively by the direction of illumination of the reflected light of each sun sensing device further by
Optical telescope range estimation confirms, thus causes to need huge labour during the adjustment of guide rail is tracked, Er Qieyou
In depending on artificial range estimation, therefore the precision of its sensing device further is often not enough.
There are a kind of known techniques in addition, it is that the direction of illumination for directly detecting sunray using sun sensing device further becomes
Change, and pass through light beam radiation modality to sense the difference of irradiation position.However, such a sun sensing device further is easily by other light
The interference of line, for example：The diffused light of sunray, reflected light or refraction light and arround other ambient lights, therefore its essence
Degree is also not enough and unstable.
From the foregoing, lack in the market a kind of simple structure, low cost, can real-time tracing and accuracy is high too
Positive sensing device further and its method for sensing, therefore related dealer is seeking its solution.
【The content of the invention】
Therefore, the purpose of the present invention is to provide a kind of sun sensing device further and its method for sensing, and it is black using light covering
Point shading mode produces the effect of shade and deviation to interdict sunray, and through the voltage between photodiode
Imbalance realizes adjustment displacement, allows the sun sensing device further can in real time and accurately to align sunray.In addition, the present invention is not
But can be for the accurate direction of illumination for detecting sunray, its construction is also relatively simple and with low cost, can solve known
The problem of high complexity structure and low accuracy of technology.
A kind of sun sensing device further is provided according to an one of aspect of the invention embodiment, it is to detect a sunray
One of direction of illumination, this sun sensing device further is comprising at a housing, a local light shield assemblies, an optical sensor and a control
Manage device.Wherein housing has a displacement mechanism with controlled displacements.Local light shield assemblies are located at housing, and sunray irradiation is local
The side of light shield assemblies.In addition, optical sensor is on housing and positioned at the opposite side of local light shield assemblies.This light sensing
Device receives sense sunlight line, local light shield assemblies shaded portions sunray and covers dark in forming one on optical sensor
Region.This masking dark area can be offset with direction of illumination displacement, make optical sensor export a voltage error signal.Furthermore,
Control processor is electrically connected with optical sensor, and control processor controls the displacement of housing according to voltage error signal, so as to order
Direction of illumination of the line at the center of optical sensor and the center of local light shield assemblies parallel to sunray.
Thereby, sunray is interdicted using the stain shading mode of light covering, and then produces the effect of shade and deviation
Really, while realizing adjustment displacement through the Voltage unbalance between photodiode, make sun sensing device further real
When and accurately align sunray.In addition, the present invention not only can be for the accurate direction of illumination for detecting sunray, its structure
Make also relatively simple and with low cost.
The other embodiment of aforementioned embodiments is as follows：Foregoing local light shield assemblies can hide comprising a Transparent Parts with a light
Shield.Wherein Transparent Parts have a caulking groove, and this caulking groove is located at the center of Transparent Parts.Light covering is then embedded in caulking groove and is positioned at
In Transparent Parts.Foregoing local light shield assemblies can include a Transparent Parts and a smooth covering.Wherein there is Transparent Parts a positioning to wear
Hole, this positional punch is located at the center of Transparent Parts and through Transparent Parts.Light covering is arranged in positional punch and is positioned at
On bright part.In addition, foregoing optical sensor can include a four-quadrant photodiode array and circuit board, wherein four-quadrant photoelectricity two
Pole pipe array includes first quartile photodiode, the second Quadrant photo diode, third quadrant photodiode and the 4th
Quadrant photo diode.First quartile photodiode, the second Quadrant photo diode, third quadrant photodiode and the 4th
Quadrant photo diode is located at first quartile position, the second quadrant position, third quadrant position and fourth quadrant position respectively
On.First quartile position, the second quadrant position, third quadrant position and fourth quadrant position are by an X-direction and a Y-axis side
Formed to division.Furthermore, masking dark area includes first quartile masking subregion, the second quadrant masking subregion, the 3rd
Quadrant covers subregion and fourth quadrant masking subregion.First quartile masking subregion local complexity first quartile photoelectricity two
Pole pipe, makes the conversion of first quartile photodiode produce a first quartile voltage；Second quadrant masking subregion local complexity the
Two quadrant photodiode, makes the conversion of the second Quadrant photo diode produce one second quadrant voltage；Third quadrant covers sub-district
The Quadrant photo diode of domain local complexity three, makes the conversion of third quadrant photodiode produce a third quadrant voltage；Four-quadrant
Limit masking subregion local complexity fourth quadrant photodiode, makes the conversion of fourth quadrant photodiode produce a fourth quadrant
Voltage.Four-quadrant photodiode array is then electrically connected with as circuit board, this circuit board provide a reverse bias in first as
Limit on photodiode, the second Quadrant photo diode, third quadrant photodiode and fourth quadrant photodiode, and
Circuit board produces output voltage according to first quartile voltage, the second quadrant voltage, third quadrant voltage and fourth quadrant voltage and missed
Difference signal.In addition, aforementioned circuit plate can have a combinations of voltages function, this combinations of voltages function includes voltage error signal, the
One quadrant voltage, the second quadrant voltage, third quadrant voltage and fourth quadrant voltage.Wherein voltage error signal includes an X-axis
Deflection error signal and a Y direction error signal, X-direction error signal are expressed asu x , Y direction error signal is expressed asu y , first quartile voltage is expressed asu 1 , the second quadrant voltage is expressed asu 2 , third quadrant voltage is expressed asu 3 , fourth quadrant voltage
It is expressed asu 4 .Combinations of voltages function meets following formula：
；
。
In addition, when foregoing X-direction error signal and Y direction error signal are zero, first quartile masking sub-district
Domain, the second quadrant masking subregion, third quadrant masking subregion and fourth quadrant cover the area all same of subregion.Before
The shape of light covering can be corresponded to by stating the shape of masking dark area.The area for covering dark area is less than the face of optical sensor
Product, and the area of masking dark area is more than first quartile masking subregion, the second quadrant masking subregion, third quadrant masking
Subregion and fourth quadrant cover the area summation of subregion.Foregoing local light shield assemblies and optical sensor can be separated by between one
Away from optical sensor has a detecting angle and a sensitivity, and this detecting angle can change with sensitivity and change with spacing.Again
Person, foregoing sun sensing device further can include a block piece, and this block piece has a perforation and a height.Block piece is located at local light
Between shield assemblies and optical sensor, and position and the shape position of corresponding optical sensor and the shape respectively of perforation.
A kind of method for sensing of sun sensing device further is provided according to one of another aspect of the invention embodiment, it is to detect
One of sunray direction of illumination is surveyed, the method for sensing of this sun sensing device further is changed comprising light masking step and a signal
Step.Wherein light masking step system is hidden using local light shield assemblies shaded portions sunray in formation one on optical sensor
Cover dark area.And signal switch process is then to export a voltage error signal, this voltage error signal pair using optical sensor
The offset of dark area should be covered, and offset is relative by local light shield assemblies, direction of illumination and optical sensor
Position is determined.
Thereby, sunray is interdicted through the stain shading mode of light covering, the effect for making it produce shade and deviation
Really, adjustment displacement is realized and through the Voltage unbalance between photodiode, makes sun sensing device further real-time
And accurately align sunray.In addition, the structure of the present invention can be excluded because of the interference signal produced by ambient light, photograph can be allowed
The detection for penetrating direction is more accurate, and its construction is relatively simple and with low cost.
The other embodiment of aforementioned embodiments is as follows：The method for sensing of foregoing sun sensing device further can include a control bit
Walk is rapid, and it is to control the start displacement of the displacement mechanism of housing according to voltage error signal using a control processor, is borrowed
To make the line at the center of optical sensor and the center of local light shield assemblies parallel to direction of illumination.Foregoing sun sensing device further
Method for sensing can be comprising an adjustment spacing step, it is to adjust the spacing between local light shield assemblies and optical sensor,
Change so as to making one of optical sensor detect angle and be produced with a sensitivity.The method for sensing of foregoing sun sensing device further can be included
One blocks interference step, and it is that the block piece with perforation is arranged between local light shield assemblies and optical sensor, so as to
Block the diffused light, reflected light or refraction light for the sunray that optical sensor is received.In addition, aforementioned signal switch process can be wrapped
Containing a combinations of voltages function, this combinations of voltages function includes voltage error signal, first quartile voltage, the second quadrant voltage, the
Three quadrant voltages and fourth quadrant voltage.Voltage error signal is believed comprising an X-direction error signal with a Y direction error
Number, wherein X-direction error signal is expressed asu x , Y direction error signal is expressed asu y , first quartile voltage is expressed asu 1 , the
Two quadrant voltage is expressed asu 2 , third quadrant voltage is expressed asu 3 , fourth quadrant voltage is expressed asu 4 .Combinations of voltages function meets
Following formula：
；
。
【Brief description of the drawings】
Fig. 1 is the schematic perspective view of the sun sensing device further of one embodiment of the invention.
Fig. 2 is the exploded view of the sun sensing device further of the 1st figure.
Fig. 3 is the sectional view of the sun sensing device further of the 1st figure.
Fig. 4 is the sunray irradiation local light shield assemblies of the 1st figure and the schematic diagram of optical sensor.
Fig. 5 A are that the masking dark area of the 4th figure is located at the schematic diagram in four-quadrant photodiode array center.
Fig. 5 B are the masking dark areas of the 4th figure relative to the signal that four-quadrant photodiode array center is down offset
Figure.
Fig. 6 is the schematic perspective view of the sun sensing device further combination telescope of one embodiment of the invention.
Fig. 7 is the schematic flow sheet of the method for sensing of the sun sensing device further of one embodiment of the invention.
Fig. 8 is the schematic flow sheet of the method for sensing of the sun sensing device further of another embodiment of the present invention.
Fig. 9 is the schematic perspective view of the sun sensing device further of another embodiment of the present invention.
【Embodiment】
Illustrate a plurality of embodiments of the present invention hereinafter with reference to schema.As clearly stated, the details in many practices will
It is explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Namely
Say, in section Example of the present invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema, some habits
Know that usual structure and element will illustrate it in the way of simply illustrating in the drawings；And the element of repetition will likely use phase
Same numbering represents it.
Also referring to the 1st ~ 3 and 6 figures.1st figure is the three-dimensional signal of the sun sensing device further 100 of one embodiment of the invention
Figure.2nd figure is the exploded view of the sun sensing device further 100 of the 1st figure.3rd figure is the section view of the sun sensing device further 100 of the 1st figure
Figure.6th figure is that the sun sensing device further 100 of one embodiment of the invention combines the schematic perspective view of telescope 800.As illustrated,
Direction of illumination 120 of the sun sensing device further 100 to detect sunray 110, and on telescope 800.Telescope 800 connects
Connect displacement mechanism 700 and by the command displacement of displacement mechanism 700, and the sun sensing device further 100 of present invention combination telescope 800 can
To carry out following the trail of and aligning in real time and accurately to the sun, and user can be allowed just right through the observation sun of telescope 800
State.Wherein sun sensing device further 100 includes housing 200, local light shield assemblies 300, block piece 400, optical sensor 500
And control processor 600.
Housing 200 is by the command displacement of displacement mechanism 700.In detail, the connection of housing 200 telescope 800.Housing 200 has
There are the first space 210, second space 220, opening 230 and wire perforation 240.First space 210 is connected second space 220,
First space 210 has the first diameter R1 and Second bobbin diameter R2 respectively with second space 220, and the first diameter R1 is straight more than second
Footpath R2.Opening 230 towards the sun, and opening 230 and telescope 800 camera lens in the same direction.Because housing 200 is connection
In on telescope 800, and telescope 800 is by the command displacement of displacement mechanism 700, therefore housing 200 also can be indirectly by displacement machine
The command displacement of structure 700 and change direction.In addition, opening 230 perforates 240 respectively positioned at the opposite end of housing 200 with wire.Lead
Line 240 wire 530 to wear optical sensor 500 of perforation.The housing 200 of the present embodiment is in hollow circular cylinder, can be suitable
Easily install local light shield assemblies 300, block piece 400 and optical sensor 500.
Local light shield assemblies 300 are located in the first space 210 in housing 200, the irradiation of sunray 110 office
The side of portion's light shield assemblies 300.In detail, local light shield assemblies 300 include Transparent Parts 310 and light covering 320.Its
Middle Transparent Parts 310 have a positional punch 312, and this positional punch 312 is located at the center of Transparent Parts 310 and through Transparent Parts 310.
Light covering 320 is arranged in positional punch 312 and is positioned in Transparent Parts 310.Transparent Parts 310 have the 3rd diameter R3, the
Three diameter R3 are more than Second bobbin diameter R2 and less than or equal to the first diameter R1, cause Transparent Parts 310 to be stably installed in first
In space 210.Furthermore, Transparent Parts 310 are the shape in its first space 210 of correspondence as made by glass or perspex, and thoroughly
Bright part 310 can protect the electronic component on optical sensor 500.Light covering 320 is then its shape as made by lighttight material
The shape of shape correspondence positional punch 312, the Transparent Parts 310 of the present embodiment are transparent disc, and light covering 320 for it is light tight it
Cylinder, both height are identical, and Transparent Parts 310 are tightly engaged into not falling off each other with light covering 320.In addition, working as the sun
During the side of the irradiation local light of light 110 shield assemblies 300, sunray 110 can the local light that arrives covers through Transparent Parts 310
The opposite side of component 300, and in the dark state of the opposite side formation masking of light covering 320, the present invention utilizes this masking
Dark combinations of states optical sensor 500 detects the change in displacement of direction of illumination 120.It is noted that local light covers
The Transparent Parts 310 of component 300 can be other embodiment structure, for example：Transparent Parts 310 can have a caulking groove (to be not illustrated in figure
In), this caulking groove is located at the center of Transparent Parts 310.Light covering 320 is then embedded in caulking groove and is positioned in Transparent Parts 310, and this is embedding
The shape of the shape correspondence light covering 320 of groove.Equally light covering 320 can firmly be engaged Transparent Parts using caulking groove
310, and do not allow it is easy to fall off, but its remove and install it is more inconvenient, producer can select needed for embodiment realized.
Block piece 400 has perforation 410 and height D1, and perforation 410 is located at the center of block piece 400, and block piece 400 is set
Between local light shield assemblies 300 and optical sensor 500.Position and the shape of perforation 410 corresponding optical sensor 500 respectively
Position and shape.Furthermore, the area that perforation 410 is projected on X/Y plane is more than the area that light covering 320 is projected on X/Y plane, and
The center that perforation 410 is projected on X/Y plane is just being projected on the center of X/Y plane to light covering 320.The present embodiment it
Block piece 400 is a light tight disk, and perforation 410 is rectangle, and forms a round outside but spuare inside special shape, and it can be reduced
Diffused light, reflected light, refraction light or other ambient lights of sunray 110 are to the interference produced by optical sensor 500.
Optical sensor 500 is on housing 200 and positioned at the opposite side of local light shield assemblies 300.Optical sensor 500 is wrapped
Photodiode array containing four-quadrant 510, circuit board 520 and wire 530.This optical sensor 500 receives sense sunlight line
110, the shaded portions sunray 110 of local light shield assemblies 300 and on optical sensor 500 formed one cover dark area B.
This masking dark area B can be offset with the displacement of direction of illumination 120, make optical sensor 500 export a voltage error signal.This
Outside, four-quadrant photodiode array 510 comprising first quartile photodiode 510a, the second Quadrant photo diode 510b,
Third quadrant photodiode 510c and fourth quadrant photodiode 510d, the complete phase of characteristic of this four photodiodes
Together.First quartile photodiode 510a, the second Quadrant photo diode 510b, third quadrant photodiode 510c and the 4th
Quadrant photo diode 510d is located at first quartile position, the second quadrant position, third quadrant position and fourth quadrant respectively
On position.First quartile position, the second quadrant position, third quadrant position and fourth quadrant position are by an X-direction and a Y
Direction of principal axis is divided and formed.Furthermore, masking dark area B includes first quartile masking subregion B1, the second quadrant masking sub-district
Domain B2, third quadrant masking subregion B3 and fourth quadrant masking subregion B4.First quartile masking subregion B1 locally covers
The lid first quartile photodiode 510a lower left corner, makes first quartile photodiode 510a be covered subregion by first quartile
Light beam beyond B1 irradiates and changes and produce a first quartile voltageu 1 ；Second quadrant masking subregion B2 local complexities second as
The photodiode 510b lower right corner is limited, makes the second Quadrant photo diode 510b be covered by the second quadrant beyond subregion B2
Light beam irradiates and changes and produce one second quadrant voltageu 2 ；Third quadrant masking subregion B3 local complexity third quadrants photoelectricity two
Pole pipe 510c, the light beam for making third quadrant photodiode 510c be covered by third quadrant beyond subregion B3 irradiates and changes and produce
A raw third quadrant voltageu 3 ；Fourth quadrant covers subregion B4 local complexity fourth quadrant photodiode 510d, makes the 4th
The light beam that Quadrant photo diode 510d is covered beyond subregion B4 by fourth quadrant irradiates and changes and produce fourth quadrant electricity
Pressureu 4 .In addition, circuit board 520 is electrically connected with four-quadrant photodiode array 510, and circuit board 520 provides a reverse bias
In first quartile photodiode 510a, the second Quadrant photo diode 510b, third quadrant photodiode 510c and
On four-quadrant photodiode 510d.Circuit board 520 is according to first quartile voltageu 1 , the second quadrant voltageu 2 , third quadrant voltageu 3 And fourth quadrant voltageu 4 Produce voltage error signal.The circuit board 520 of the present invention is to control four-quadrant light using reverse bias
Electric diode array 510, and amplified voltage signal using non-return operational amplifier, this reverse bias mode applies voltage
In dark current can be effectively reduced on photodiode.
In addition, circuit board 520 has a combinations of voltages function, this combinations of voltages function includes voltage error signal, first
Quadrant voltageu 1 , the second quadrant voltageu 2 , third quadrant voltageu 3 And fourth quadrant voltageu 4 .Wherein voltage error signal includes X
Direction of principal axis error signalu x With Y direction error signalu y .Combinations of voltages function meets following formula：
(1)；
(2)。
When formula (1) itu x During more than 0 (on the occasion of), represent the second quadrant masking subregion B2 and cover sub-district with third quadrant
The domain B3 shade gross area compared with first quartile cover subregion B1 and fourth quadrant cover subregion B4 the shade gross area be it is big,
Now by sun sensing device further 100 towards negative X-direction displacement, and then drive optical sensor 500 also toward X-direction displacement is born, directly
Arriveu x Stop displacement equal to 0；On the contrary, when formula (1) itu x During less than 0 (negative value), the second quadrant masking subregion B2 is represented
The subregion B3 shade gross area is covered compared with first quartile masking subregion B1 and fourth quadrant masking subregion with third quadrant
The B4 shade gross area is small, now by sun sensing device further 100 towards positive X-direction displacement, and then drives optical sensor 500
Past positive X-direction displacement, untilu x Stop displacement equal to 0.Similarly, when formula (2) itu y During more than 0 (on the occasion of), the 3rd is represented
Quadrant covers subregion B3 and fourth quadrant and covers the subregion B4 shade gross area covers subregion B1 and the compared with first quartile
The two quadrant masking subregion B2 shade gross area be big, now by sun sensing device further 100 and optical sensor 500 towards negative Y-axis
Direction displacement, untilu y Untill 0；And when formula (2) itu y During less than 0 (negative value), third quadrant masking subregion B3 is represented
The shade gross area for covering subregion B4 with fourth quadrant covers subregion B1 compared with first quartile and the second quadrant covers subregion
The B2 shade gross area is small, now by sun sensing device further 100 and optical sensor 500 towards positive Y direction displacement, until Y-axis
Deflection error signalu y Untill 0.Furthermore, when X-direction error signalu x With Y direction error signalu y When being zero, the
One quadrant masking subregion B1, the second quadrant masking subregion B2, third quadrant masking subregion B3 and fourth quadrant masking
Subregion B4 area all same.Under above-mentioned control mode and adjustment of displacement, can allow optical sensor 500 center and office
The line at the center of portion's light shield assemblies 300 is parallel to direction of illumination 120.In other words, when voltage error signal is equal to zero, hide
Cover the centre that dark area B is located at optical sensor 500.When voltage error signal is not equal to zero, the meeting of sun sensing device further 100
By real-time displacement, untill voltage error signal is equal to zero.Thereby, the present invention is performed using the light covering 320 of black
Shading mode, makes light interdict and produce shade, and judges using voltage error signal the direction of illumination of sunray 110
Whether 120 be inclined to.In addition, even if sunray 110 is weaker, optical sensor 500 can be still accurately detected by sunray
Ultra-weak electronic signal produced by 110 irradiations.That is, the present invention relies on the shade of light covering 320 in optical sensor 500
The ultra-weak electronic signal difference formed on surface judges, as long as there is trickle deviation accurate by optical sensor 500
Detect that it not only can be used to detect light source direction, and construct also relatively simple in ground.
In addition it is noted that four-quadrant photodiode array 510 has a height D2, that is, first quartile photoelectricity
Diode 510a, the second Quadrant photo diode 510b, third quadrant photodiode 510c and the pole of fourth quadrant photoelectricity two
Pipe 510d is respectively provided with height D2.The height D1 of the block piece 400 of the present invention is more than the height of four-quadrant photodiode array 510
D2, can thereby be greatly reduced the interference of light, and in any environment, each photodiode can receive same environment
Interference diffusing reflection light, that is, each photodiode can detect the ambient light signal of uniformity.In addition, of the invention
Adjustment sun sensing device further 100 is controlled through the Voltage unbalance of four photodiodes caused by masking dark area B
And the displacement of telescope 800, to detect the exact position of the sun, it can not only detect light source direction, and structure in real time
Make also relatively simple, cost low.
In addition, wire 530 is to power and transmit sensing signal, its one end connects the bottom of circuit board 520, another
End then connects control processor 600 through the wire perforation 240 of housing 200.Furthermore, local light shield assemblies 300 and light sensing
Device 500 is separated by a spacing, and optical sensor 500 has detecting angle and sensitivity, and this detecting angle can become with sensitivity with spacing
Change and change.In detail, when the spacing between local light shield assemblies 300 and four-quadrant photodiode array 510 is bigger
When, the scope of the detecting X-axis of optical sensor 500 and Y-axis is smaller, causes detecting angle smaller and sensitivity is lower；Conversely, when local
When spacing between light shield assemblies 300 and four-quadrant photodiode array 510 is bigger, the reconnaissance range of optical sensor 500
It is bigger, cause detecting angle bigger and sensitivity is higher.Therefore, the present invention can pass through adjustment light covering 320 and four-quadrant light
Spacing between electric diode array 510 changes angular dimension and the sensitivity of the reconnaissance range of optical sensor 500, that is, different
Sun sensing device further 100 different spacing can be set, a variety of demand applications can be met.
Control processor 600 is electrically connected with optical sensor 500 and displacement mechanism 700, and control processor 600 is according to voltage
Error signal controls the displacement of housing 200, so as to making the center of optical sensor 500 and the center of local light shield assemblies 300
Line parallel to sunray 110 direction of illumination 120.Carefully say, control processor 600 is according to from optical sensor
500 voltage error signal comes command displacement mechanism 700, and displacement mechanism 700 can command displacement telescope 800.Due to sun sense
The outside that device 100 is arranged at telescope 800 is surveyed, and it is consistent with the direction of telescope 800, therefore control processor 600 can
To be indirectly controlled the displacement of housing 200.Furthermore, when the X-direction error signal of voltage error signalu x Or Y direction error
Signalu y When having the situation generation being not zero, control processor 600 understands the displacement telescope 800 in real time of command displacement mechanism 700
With housing 200, until X-direction error signalu x With Y direction error signalu y It is simultaneously zero (telescope 800 is just to the sun)
Displacement drive can just be stopped.In addition, control processor 600 can control two axially different displacement mechanisms 700 to rotate simultaneously, make
Telescope 800 can be moved and any orientation in corresponding three-dimensional space by displacement mechanism 700.Inside displacement mechanism 700
Mechanical structure and control processor 600 inside circuit structure be known techniques, therefore repeat no more.
4th figure is the irradiation local light of sunray 110 shield assemblies 300 and the schematic diagram of optical sensor 500 of the 1st figure.
5A figures are that the masking dark area B of the 4th figure is located at the schematic diagram in the center of four-quadrant photodiode array 510.5B figures are
The masking dark area B of 4th figure is relative to the schematic diagram that the center of four-quadrant photodiode array 510 is down offset.By the 4th figure
Understand, the direction of illumination 120 of sunray 110 is negative Z-direction.And the shape for covering dark area B can correspond to light covering
320 shape, and masking dark area B area of the area less than optical sensor 500.Due to first quartile photodiode
510a, the second Quadrant photo diode 510b, third quadrant photodiode 510c and fourth quadrant photodiode 510d
Have space to each other without connection, thus masking dark area B area be more than first quartile masking subregion B1, second as
The area of limit masking subregion B2, third quadrant masking subregion B3 and fourth quadrant masking subregion B4 four sub-regions is total
With.Certainly, four photodiodes can be connected to each other and tight, and the decision of producer is seen at end.Therefore, no matter photodiode
Between have tight, as long as local light shield assemblies 300 are correspondingly arranged with optical sensor 500, then the shading that is utilized of the present invention
Mode realizes sun detecting and tracking with regard to that can allow sun sensing device further 100 in real time and accurately align sunray 110
Effect.
7th figure is the schematic flow sheet of the method for sensing 900 of the sun sensing device further of one embodiment of the invention.This sun sense
The method for sensing 900 for surveying device is the direction of illumination 120 that sunray 110 is detected using sun sensing device further 100, and the sun
The method for sensing 900 of sensing device further includes light masking step S11 and signal switch process S12.Wherein light masking step S11 systems are sharp
With the shaded portions sunray 110 of local light shield assemblies 300 dark area B is covered in formation one on optical sensor 500.And
Signal switch process S12 is then to export a voltage error signal using optical sensor 500, and the correspondence masking of this voltage error signal is cloudy
Dark areas B offset, and offset is by the phase of local light shield assemblies 300, direction of illumination 120 and optical sensor 500
Position is determined.Thereby, sunray 110 is interdicted through the stain shading mode of light covering 320, make its produce shade and
It is projected on optical sensor 500.When shade is inclined to, the Voltage unbalance between permeable photodiode comes real
The adjustment displacement of existing shade, and then allow the energy of sun sensing device further 100 in real time and accurately align sunray 110.
8th figure is the method for sensing 900a of the sun sensing device further of another embodiment of the present invention schematic flow sheet.This is too
The method for sensing 900a of positive sensing device further includes adjustment spacing step S21, blocks interference step S22, light masking step S23, letter
Number switch process S24 and command displacement step S25.
The spacing between spacing step S21 systems adjustment local light shield assemblies 300 and optical sensor 500 is adjusted, so as to order
The detecting angle of optical sensor 500 produces change with sensitivity.And producer can be according to desired detecting angle and sensitivity
To determine the size of spacing.
The block piece 400 that perforation 410 will be had by blocking interference step S22 systems is arranged at local light shield assemblies 300 and light
Between sensor 500, so as to block the diffused light of the sunray 110 that optical sensor 500 is received, reflected light, refraction light or
The interference of other ambient lights., can be with and the height D1 of the block piece 400 of the present invention is more than the height D2 of optical sensor 500
The interference of light is allowed to be greatly reduced.
Light masking step S23 systems are using the shaded portions sunray 110 of local light shield assemblies 300 in optical sensor
Masking dark area B is formed on 500.Furthermore, the four-quadrant photodiode array of the optical sensor 500 in the embodiment of the present invention
510 be that using four photodiodes, certainly, it also can be by three or other more photodiodes are realized that light covers
Step S23, and the photodiode of these varying numbers utilizes " area of masking subregion " and " masking dark area B
Positioned at the center of optical sensor 500 " carry out criterion as judgement.Therefore, the present invention permeable many varying numbers, style and type
The optical sensor 500 of state is subject to construction, and then allows producer to have more selections.
Signal switch process S24 is then to utilize the output voltage error signal of optical sensor 500, this voltage error signal correspondence
Dark area B offset is covered, and offset is by local light shield assemblies 300, direction of illumination 120 and optical sensor
500 relative position is determined.In addition, signal switch process S24 can include the combinations of voltages function of correspondence formula (1) and (2), thoroughly
Overvoltage composite function can learn the poised state of photodiode voltage each other.
Command displacement step S25 is then come command displacement mechanism 700 using control processor 600 according to voltage error signal
Start displacement, so as to making the line at the center of optical sensor 500 and the center of local light shield assemblies 300 parallel to irradiation side
To 120.Through above-mentioned steps flow, the sun sensing device further 100 of the present invention, which combines telescope 800, to be carried out in real time to the sun
And accurately follow the trail of and align, and can allow user through telescope 800 observe the sun just to state.
Also referring to the 2nd figure and the 9th figure, the 9th figure is the vertical of the sun sensing device further 100a of another embodiment of the present invention
Body schematic diagram.This sun sensing device further 100a includes housing 200, local light shield assemblies 300, optical sensor 500 and control
Processor 600.In the embodiment of the 9th figure, housing 200, local light shield assemblies 300, optical sensor 500 and control process
Device 600 is identical with the square of correspondence in the 2nd figure, repeats no more.Specifically, the sun sensing device further of the 9th figure embodiment
100a does not have block piece 400, under conditions of no block piece 400, and sun sensing device further 100a remains unchanged can be through light masking
Part 320 interdicts sunray 110, is then missed via voltages of the masking dark area B produced by multiple photodiodes
Difference signal comes command displacement mechanism 700, and the movable telescope 800 of displacement mechanism 700 simultaneously interlocks sun sensing device further 100a, and then
Enable sun sensing device further 100a in real time and accurately follow the trail of the sun.
From above-mentioned embodiment, the present invention has following advantages：First, utilizing the stain shading mode of light covering
To interdict sunray, the effect of shade and deviation can be produced, and come through the Voltage unbalance between photodiode
Adjustment displacement is realized, allows sun sensing device further in real time and accurately to align sunray.Second, the present invention can not only be used
Carry out the accurate direction of illumination for detecting sunray, its construction is also relatively simple and with low cost.Third, circuit board system is using reverse
Bias voltage control four-quadrant photodiode array, it can be effectively reduced dark current.Fourth, the knot of block piece combination optical sensor
The interference produced by ambient light can be greatly reduced in structure.Fifth, through shading mode optical sensor can be made weaker in sunray
In the environment of still can sense and produce ultra-weak electronic signal, and skew can be judged by the difference of ultra-weak electronic signal.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any to be familiar with this skill
Person, without departing from the spirit and scope of the invention, when can make various changes with retouching, therefore the present invention protection domain ought
It is defined depending on the rear attached claim person of defining.
【Symbol description】
100、100a：Sun sensing device further
110：Sunray
120：Direction of illumination
200：Housing
210：First space
220：Second space
230：Opening
240：Wire is perforated
300：Local light shield assemblies
310：Transparent Parts
312：Positional punch
320：Light covering
400：Block piece
410：Perforation
500：Optical sensor
510：Four-quadrant photodiode array
510a：First quartile photodiode
510b：Second Quadrant photo diode
510c：Third quadrant photodiode
510d：Fourth quadrant photodiode
520：Circuit board
530：Wire
600：Control processor
700：Displacement mechanism
800：Telescope
900、900a：The method for sensing of sun sensing device further, R1：First diameter
R2：Second bobbin diameter
R3：3rd diameter
D1、D2：Highly
B：Cover dark area
B1：First quartile covers subregion
B2：Second quadrant covers subregion
B3：Third quadrant covers subregion
B4：Fourth quadrant covers subregion
u 1 ：First quartile voltage
u 2 ：Second quadrant voltage
u 3 ：Third quadrant voltage
u 4 ：Fourth quadrant voltage
u x ：X-direction error signal
u y ：Y direction error signal
S11：Light covers step
S12：Signal switch process
S21：Adjust spacing step
S22：Block interference step
S23：Light covers step
S24：Signal switch process
S25：Command displacement step.
Claims (14)
1. a kind of sun sensing device further, to detect one of sunray direction of illumination, the sun sensing device further is included：
Housing, by a displacement mechanism command displacement；Local light shield assemblies, located at the housing, the sunray irradiates the part
The side of light shield assemblies；Optical sensor, located at the housing and positioned at the opposite side of the local light shield assemblies, the optical sensor
Receive and sense the sunray, the local light shield assemblies shaded portions sunray and hidden in forming one on the optical sensor
Dark area is covered, the masking dark area is offset with the direction of illumination displacement, make the optical sensor export voltage error letter
Number；And control processor, the optical sensor is electrically connected with, the control processor controls the housing according to the voltage error signal
Displacement, so as to making the line at the center of the optical sensor and the center of the local light shield assemblies parallel to the direction of illumination.
2. sun sensing device further according to claim 1, wherein the local light shield assemblies are included：Transparent Parts, with one
Caulking groove, the caulking groove is located at the center of the Transparent Parts；And light covering, the embedded caulking groove is interior and is positioned in the Transparent Parts.
3. sun sensing device further according to claim 1, wherein the local light shield assemblies are included：Transparent Parts, with one
Positional punch, the positional punch is located at the center of the Transparent Parts and through the Transparent Parts；And light covering, it is arranged at the positioning
It is positioned in perforation in the Transparent Parts.
4. sun sensing device further according to claim 1, the wherein optical sensor are included：Four-quadrant photodiode battle array
Row, include a first quartile photodiode, one second Quadrant photo diode, a third quadrant photodiode and one the 4th
Quadrant photo diode, the first quartile photodiode, the second Quadrant photo diode, the third quadrant photodiode
And the fourth quadrant photodiode respectively be located at a first quartile position, one second quadrant position, a third quadrant position and
On one fourth quadrant position, the first quartile position, second quadrant position, the third quadrant position and the fourth quadrant position
System is divided by an X-direction and a Y direction and formed, and the masking dark area includes first quartile masking subregion, one
Second quadrant masking subregion, third quadrant masking subregion and fourth quadrant masking subregion；First quartile masking
The region local complexity first quartile photodiode, makes first quartile photodiode conversion produce first quartile electricity
Pressure；Second quadrant masking subregion local complexity the second Quadrant photo diode, makes the second Quadrant photo diode turn
Change one second quadrant voltage of generation；Third quadrant masking subregion local complexity third quadrant photodiode, make this
The conversion of three Quadrant photo diodes produces a third quadrant voltage；The fourth quadrant masking subregion local complexity fourth quadrant
Photodiode, makes fourth quadrant photodiode conversion produce a fourth quadrant voltage；And circuit board, being electrically connected with should
Four-quadrant photodiode array, the circuit board provides a reverse bias in the first quartile photodiode, second quadrant
On photodiode, the third quadrant photodiode and the fourth quadrant photodiode, and the circuit board according to this first
Quadrant voltage, the second quadrant voltage, the third quadrant voltage and the fourth quadrant voltage, which are produced, exports the voltage error signal.
5. sun sensing device further according to claim 4, the wherein circuit board have a combinations of voltages function, the voltage group
Close function and include the voltage error signal, the first quartile voltage, the second quadrant voltage, the third quadrant voltage and the 4th
Quadrant voltage, the voltage error signal includes an X-direction error signal and a Y direction error signal, the X-direction error
Signal is expressed asu x , the Y direction error signal is expressed asu y , the first quartile voltage is expressed asu 1 , the second quadrant voltmeter
It is shown asu 2 , the third quadrant voltage is expressed asu 3 , the fourth quadrant voltage is expressed asu 4 , the combinations of voltages function meets following formula：
；
。
6. according to the sun sensing device further described in claim the 5, wherein when the X-direction error signal and the Y direction
When error signal is zero, first quartile masking subregion, second quadrant masking subregion, third quadrant masking sub-district
Domain and the fourth quadrant cover the area all same of subregion.
7. according to the sun sensing device further described in claim the 4, the wherein shape of the masking dark area is to should be local
The shape of one smooth covering of light shield assemblies, the area of the masking dark area is less than the area of the optical sensor, and the screening
The area for covering dark area is more than first quartile masking subregion, second quadrant masking subregion, third quadrant masking
Subregion and the fourth quadrant cover the area summation of subregion.
8. sun sensing device further according to claim 1, wherein the local light shield assemblies are separated by one with the optical sensor
Spacing, the optical sensor has a detecting angle and a sensitivity, and the detecting angle changes with the sensitivity and changed with the spacing
Become.
9. sun sensing device further according to claim 1, is further included：Block piece, with a perforation and a height, this is blocked
Part is located between the local light shield assemblies and the optical sensor, and the perforation position and shape respectively to should optical sensor
Position and shape.
10. the method for sensing of a kind of sun sensing device further for described in claim the 1st, to detect a sunshine
One of line direction of illumination, the method for sensing of the sun sensing device further is comprised the steps of：Light covers step, is to utilize a local light
The shield assemblies shaded portions sunray and on an optical sensor formed one cover dark area；And signal conversion step
Suddenly, it is to export a voltage error signal using the optical sensor, the voltage error signal is one inclined to should cover dark area
Shifting amount, and the offset determines by the relative position of the local light shield assemblies, the direction of illumination and the optical sensor.
11. according to the method for sensing of the sun sensing device further described in claim the 10, further include：
Command displacement step, is the start position for controlling the displacement mechanism according to the voltage error signal using a control processor
Move, so as to making the line at the center of the optical sensor and the center of the local light shield assemblies parallel to the direction of illumination.
12. according to the method for sensing of the sun sensing device further described in claim the 10, the wherein signal switch process is included
One combinations of voltages function, the combinations of voltages function includes the voltage error signal, a first quartile voltage, one second quadrant electricity
Pressure, a third quadrant voltage and a fourth quadrant voltage, the voltage error signal include an X-direction error signal and a Y-axis
Deflection error signal, the X-direction error signal is expressed asu x , the Y direction error signal is expressed asu y , first quartile electricity
Pressure is expressed asu 1 , the second quadrant voltage is expressed asu 2 , the third quadrant voltage is expressed asu 3 , the fourth quadrant voltage is expressed asu 4 , the combinations of voltages function meets following formula：
；
。
13. according to the method for sensing of the sun sensing device further described in claim the 10, further include：Spacing step is adjusted, is
The spacing between the local light shield assemblies and the optical sensor is adjusted, so as to making one of the optical sensor detect angle and one
Sensitivity produces change.
14. according to the method for sensing of the sun sensing device further described in claim the 10, further include：Interference step is blocked, is
There to be one of perforation block piece to be arranged between the local light shield assemblies and the optical sensor, so as to blocking the light sensing
One of the sunray that device is received diffused light, reflected light or refraction light.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| TW105131927 | 2016-10-03 | ||
| TW105131927A TWI612406B (en) | 2016-10-03 | 2016-10-03 | Solar tracking device and tracking method thereof |
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| TW201814416A (en) | 2018-04-16 |
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