CN106052677A - A sun sensor and a sun direction vector determining method - Google Patents
A sun sensor and a sun direction vector determining method Download PDFInfo
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- CN106052677A CN106052677A CN201610304055.0A CN201610304055A CN106052677A CN 106052677 A CN106052677 A CN 106052677A CN 201610304055 A CN201610304055 A CN 201610304055A CN 106052677 A CN106052677 A CN 106052677A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/02—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by astronomical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
Abstract
A sun sensor and a sun direction vector determining method are disclosed. The sun sensor comprises sunlight sensing devices (100) and a sun direction vector calculator (200). The sunlight sensing devices (100) comprise output current collecting and controlling circuits, solar cell sheets (110) and supporting structures (120). The output current collecting and controlling circuits are respectively connected to the sun direction vector calculator (200) and the solar cell sheets (110). The supporting structures (120) have regular pentagonal pyramid stages (121). The top surface and five side surfaces of each of the regular pentagonal pyramid stages (121) are provided with the solar cell sheets (110). The number of the sunlight sensing devices (100) is two. The two sunlight sensing devices (100) are respectively mounted at two sides of a satellite. The regular pentagonal pyramid stages (121) of the two sunlight sensing devices (100) are parallel and opposite to each other. Through the technical scheme mentioned above, a problem that sun sensors at present are narrow in measurement fields of view is overcome.
Description
Technical field
The present invention relates to space technology field, particularly relate to a kind of sun sensor and the determination side of solar direction vector
Method.
Background technology
Sun sensor is one of important attitude measurement parts of satellite.Sun sensor is by observing the sun at it
The projected position of sensing unit resolves the satellite attitude relative to the sun.Sun sensor is detected in conjunction with other sensor
Information (such as Magnetic Field) just can calculate satellite attitude in geocentric inertial coordinate system.
At present, sun sensor mainly has 0/1 formula sun sensor, analog sun sensor and digital solar sensitive
Device three kinds.Wherein, 0/1 formula sun sensor predominantly detects whether the sun occurs in its field range.When the sun occurs, 0/
1 formula sun sensor is output as 1；When the sun occurs without, 0/1 formula sun sensor is output as 0.Visible, the 0/1 formula sun is quick
Sensor can only detect within whether the sun occur in its detection viewing field, it is impossible to resolves solar direction vector, more will not relate to resolve
The precision of solar direction vector.
Analog sun sensor uses solar battery sheet as senser element, and the output electric current of solar battery sheet is strong
Degree and solar incident angle degree are cosine relation.The visual field of analog sun sensor is typically at about 20-30 °, and precision is on 1 ° of left side
Right.Digital sun sensor calculates solar incident angle by calculating sunray relative to the deviation of its center, enters
And realize the resolving of follow-up solar direction vector.At present, digital sun sensor mainly have CCD digital sun sensor and
APS digital sun sensor two kinds.Wherein, CCD digital sun sensor include line array CCD digital sun sensor and
Area array CCD digital sun sensor.APS digital sun sensor is then based on face battle array.Application CCD is digital too at present
Sun sensor product is more.The visual field of CCD digital sun sensor typically at about ± 60 °, its precision can reach≤
0.05°.Mostly its principle is to use sunlight to be radiated on ccd detector by slit, visits by calculating sun imaging deviation CCD
The position at Ce Qi center calculates solar incident angle, and then realizes the resolving of follow-up solar direction vector.
By the introduction to analog sun sensor and digital sun sensor, analog sun sensor and
Digital sun sensor all exists measures the problem that visual field is narrower.When attitude of satellite deviation is bigger, the sun can deviate the sun
The visual field of sensor, and then cause the measurement disabler of sun sensor.It addition, current analog sun sensor uses
Solar battery sheet is as its sensing part, and its output electric current and solar incident angle degree are cosine relation.But when the sun is incident
After angle is more than 60 °, the reflection on solar battery sheet surface increases, and then causes actual output electric current less than normal, finally
The detection error to solar direction vector is caused to increase.
In view of this, how to solve current sun sensor existence measures the problem that visual field is narrower, is current ability
The technical problem that field technique personnel are urgently to be resolved hurrily.
Summary of the invention
The open a kind of sun sensor of the present invention, regards with the measurement solved existing for the sun sensor described in background technology
The problem that field is narrower.
In order to solve above-mentioned technical problem, the present invention is disclosed directly below technical scheme:
Sun sensor, including sunlight sensor and solar direction resolution of a vector device；Described sunlight sensitivity fills
Put and include exporting current acquisition and control circuit and solar battery sheet；Described output current acquisition and control circuit respectively with institute
State solar direction resolution of a vector device to be connected with described solar battery sheet；Described sunlight sensor also includes supporting knot
Structure；Described supporting construction has positive pentagonal pyramid platform；End face and five sides of described positive pentagonal pyramid platform are provided with the described sun
Can cell piece；
The quantity of described sunlight sensor is two；Two described sunlight sensors are respectively used to be installed on to be defended
The both sides of star；The described positive pentagonal pyramid platform bottom surface of two described sunlight sensors is parallel, and Relative distribution.
Preferably, in above-mentioned sun sensor, described positive pentagonal pyramid platform is hollow structure；Described output current acquisition and control
Circuit processed is output current acquisition and control circuit plate；Described output current acquisition and control circuit plate are connected to described positive five ribs
The bottom surface of frustum, and form annular seal space with described positive pentagonal pyramid platform；Described output current acquisition is first with the electrical equipment of control circuit plate
Part is positioned at described annular seal space.
Preferably, in above-mentioned sun sensor, the corner of the end face of described positive pentagonal pyramid platform all offers through wires hole, described
Through wires hole connects with described annular seal space；Described solar battery sheet is by electric wire and the described output electric current through described through wires hole
Gather and be connected with control circuit plate.
Preferably, in above-mentioned sun sensor, the both sides of described solar battery sheet are provided with busbar；Described conflux
Bar is all connected with described electric wire.
Preferably, in above-mentioned sun sensor, the bottom margin of described positive pentagonal pyramid platform is provided with outer；Described outer sets
It is equipped with the connecting hole for being connected with described satellite.
Preferably, in above-mentioned sun sensor, described output current acquisition and control circuit also include critesistor and electricity
Stream compensating unit；Described critesistor is arranged at described supporting construction, and for detecting the actual work of described solar battery sheet
Make temperature；Described current compensation unit is for implementing to compensate to the output electric current of described solar battery sheet；
Compensation relationship is:
I0=I-(T-T0)·η
Wherein, T is the actual work temperature of solar cell piece；I is the output electric current of the solar battery sheet of actual measurement；T0For
The reference test temperature of solar battery sheet, I0It is T for corresponding temperature under the conditions of current light0Time output electric current, η is the sun
The temperature coefficient of the output electric current of energy cell piece.
Solar direction vows method for determination of amount, uses the sun sensor realization as above described in any one；Including as follows
Step:
71) solar incident angle is determined according to the output electric current of described solar battery sheet；
71) select described solar incident angle less than set threshold value described solar battery sheet, described set threshold value as
65°；
72) according to normal equation and the cosine of corresponding described solar incident angle of selected described solar battery sheet
The equation group that value is formed calculates solar direction vector.
Preferably, above-mentioned determine in method, step 71) by inquiry output electric current table corresponding with the relation of solar incident angle
Obtain the described solar incident angle of every piece of described solar battery sheet.
Sun sensor disclosed by the invention has the advantages that
In sun sensor disclosed by the invention, each sunlight sensor all includes six solar battery sheets, six
Sheet solar battery sheet lays respectively at the end face of positive pentagonal pyramid platform and five sides.Said structure makes five of positive pentagonal pyramid platform
The angle of side and end face is 60 °, and five sides of positive pentagonal pyramid platform and the angle of bottom surface are 30 °, two adjacent sides
Between angle be 61.2 °.Angle between the solar battery sheet that this allows for end face and side is arranged also meets above-mentioned
Relation.When two sunlight sensors are arranged at the both sides of satellite abreast, whole sun sensor is capable of ±
The 180 ° × ± full filed of 180 ° is measured.Visible, sun sensor disclosed by the invention can solve the sun described in background technology
What sensor existed measures the problem that visual field is narrower.
It addition, when two sunlight sensors are arranged at the both sides of satellite abreast, each sunlight sensor
The distribution mode of solar battery sheet may insure that sunlight, no matter from any angular illumination, always has at least 3 solar-electricity
Angle of incidence of sunlight on the sheet of pond is not more than 60 °, uses the angle of incidence of sunlight in these 3 faces just can resolve solar direction and vows
Amount, owing to angle of incidence of sunlight is not more than 60 °, therefore this can reduce the surface reflection of solar battery sheet.Visible, phase
Ratio is for the analog sun sensitive period described in background technology, and sun sensor disclosed by the invention can improve solar direction and vow
Measurement precision.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention or background technology, below will be to embodiment or the back of the body
In the description of scape technology, the required accompanying drawing used is briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of sun sensor disclosed in the embodiment of the present invention；
Fig. 2 is sunlight sensor structural representation under a visual angle disclosed in the embodiment of the present invention；
Fig. 3 is sunlight sensor structural representation under another visual angle disclosed in the embodiment of the present invention；
Fig. 4 is a kind of concrete schematic diagram of the embodiment of the present invention disclosed output current acquisition and control circuit；
Fig. 5 is the determination method flow diagram of solar direction vector disclosed in the embodiment of the present invention.
Description of reference numerals:
100-sunlight sensor, 110-solar battery sheet, 111-busbar, 120-supporting construction, 121-positive five
The frustum of a pyramid, 1211-through wires hole, the micro-rectangular connector of 1212-, 122-outer, 1221-connecting hole, 130-output current acquisition with
Control circuit plate, 131-screw, 200-solar direction resolution of a vector device.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the present invention, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is general
The every other embodiment that logical technical staff is obtained on the premise of not making creative work, all should belong to the present invention
The scope of protection.
Refer to Fig. 1-3, the open a kind of sun sensor of the embodiment of the present invention.Disclosed sun sensor includes the sun
Sensing device 100 and solar direction resolution of a vector device 200.
The quantity of sunlight sensor 100 is two, all includes exporting current acquisition and control circuit, solaode
Sheet 110 and supporting construction 120.Output current acquisition and control circuit be connected to solar direction resolution of a vector device 200 and
Solar battery sheet 110.Supporting construction 120 has positive pentagonal pyramid platform 121, and end face and five sides of positive pentagonal pyramid platform 121 are equal
It is provided with solar battery sheet 110, say, that a sunlight sensor 100 has six solar battery sheets 110.
Generally, solar battery sheet 110 is fixed on end face or the side of positive pentagonal pyramid platform 121 by the way of bonding.
Two sunlight sensors 100 are respectively used to be arranged on the both sides of satellite, two sunlight sensors 100
The bottom surface of positive pentagonal pyramid platform 121 is parallel, and two to distribution.It is to say, two sunlight sensors 100 are parallelly mounted to
The both sides of satellite.Certainly, two sunlight sensors 100 need to be installed on satellite both sides during work and do not block
Surface, to guarantee that sunlight has an opportunity to be projected to the surface of solar battery sheet 110.
Solar direction resolution of a vector device 200 obtains the detection information of sunlight sensor 100, and based on fixed
Algorithm resolves solar direction vector, and concrete calculation method is prior art, and this does not repeats.Solar direction resolution of a vector device
200 can be appearance control computer or house keeping computer, it is also possible to being other processor being used alone, this is not limited by the application
System.
In sun sensor disclosed in the present embodiment, solar battery sheet 110 is remaining for output electric current with solar incident angle
The cell piece of string relation, such as silicon cell, three-junction gallium arsenide cell piece.
In sunlight sensor 100, the bottom margin of positive pentagonal pyramid platform 121 can be provided with outer 122, outer 122
It is provided with connecting hole 1221.Connecting hole 1221 realizes whole sunlight sensor 100 on satellite by coordinating with connector
Fixing.The setting of outer 122 not only can improve the intensity of whole positive pentagonal pyramid platform 121, and can also improve joining of connector
Close position.
A kind of specific embodiment mode: the end face circumradius of positive pentagonal pyramid platform 121 is 3.2cm, positive pentagonal pyramid platform
Outer 122 circumradius of 121 bottom surfaces is 5.9cm；Solar battery sheet 110 uses the silicon cell of 1cm*1cm.Certainly,
The overall dimensions of supporting construction 120 and solar battery sheet 110 can regulate the most accordingly, and the application is to this
It is not restricted.
In sun sensor disclosed in the present embodiment, each sunlight sensor 100 all includes six solaodes
Sheet 110, six solar battery sheets 110 lay respectively at the end face of positive pentagonal pyramid platform 121 and five sides.Said structure just makes
Five sides of pentagonal pyramid platform 121 and the angle of end face are 60 °, five sides of positive pentagonal pyramid platform 121 and the angle of bottom surface
Being 30 °, the adjacent angle between two sides is 61.2 °.This allows for the solar battery sheet that end face is arranged with side
Angle between 110 also meets above-mentioned relation.When two sunlight sensors 100 are arranged at the both sides of satellite abreast,
Whole sun sensor is capable of ± and the 180 ° × ± full filed of 180 ° measures.Visible, the sun disclosed in the present embodiment is sensitive
What device can solve that sun sensor described in background technology exists measures the problem that visual field is narrower.
When two sunlight sensors 100 are arranged at the both sides of satellite abreast, each sunlight sensor 100
The distribution mode of solar battery sheet 110 may insure that sunlight, no matter from any angular illumination, always has at least 3 solar energys
Angle of incidence of sunlight on cell piece 110 is not more than 60 °, uses the angle of incidence of sunlight in these 3 faces just can resolve the sun
Direction vector, owing to angle of incidence of sunlight is not more than 60 °, therefore this surface reflection that can reduce solar battery sheet 110 is made
With.Visible, sun sensor disclosed in the embodiment of the present invention can improve solar direction vector measurement precision.Through checking, this reality
The full filed certainty of measurement executing sun sensor disclosed in example is basically identical, and certainty of measurement is better than 0.5 °.
Refer to Fig. 3, in sun sensor disclosed in the embodiment of the present invention, positive pentagonal pyramid platform 121 is preferably hollow structure,
Output current acquisition and control circuit can be output current acquisition and control circuit plate 130.Output current acquisition and control electricity
Road plate 130 is connected to the bottom surface of positive pentagonal pyramid platform 121, and forms annular seal space, output current acquisition and control with positive pentagonal pyramid platform 121
The electric elements of circuit board 130 processed are positioned at annular seal space.It is sensitive that positive pentagonal pyramid platform 121 uses hollow structure can reduce the whole sun
The weight of device, hollow structure can also provide installing space for other parts, to avoid other parts to occur simultaneously
Collsion damage.
In a kind of specific embodiment, output current acquisition and control circuit plate 130 are by screw 131 and supporting construction
The bottom surface of 120 is connected.Heat insulating mattress can be set between screw 131 and supporting construction 120, preferably to guarantee to export current acquisition
It is operated within the scope of reasonable temperature with control circuit plate 130.
Refer to the output current acquisition schematic diagram with control circuit that Fig. 4, Fig. 4 are a kind of concrete structures.Shown in Fig. 4
Output current acquisition and control circuit by sampling resistor R, the output current signal of solar battery sheet 110 is changed into electricity
Signals collecting is carried out by acquisition chip after pressure signal.Concrete, acquisition chip can use the ADC with serial bus interface
Chip.The resistance of sampling resistor R selects to first have to guarantee that the operating point of solar battery sheet 110 is operated in the linear of IV curve
Section, takes into account the sampling resolution of ADC chip simultaneously.Under the silicon cell premise that solar battery sheet 110 is 1cm*1cm, adopt
The resistance of sample resistance R is not more than 10 Ω, and ADC chip can be 8 Channel 12-Bit SPI interface chips.
Output current acquisition can use connector and solar direction resolution of a vector unit 200 with the outfan of control circuit
Being connected, the signal transmitted between the two can include the signal of telecommunication and communication signal.Concrete, plug connector can be that micro-rectangle patches
Part 1212, such as J30J-9ZKW adapter.
Solar battery sheet 110 is typically connected with control circuit plate 130 with output current acquisition by electric wire.To this end, just
The end face of pentagonal pyramid platform 121 can offer through wires hole 1211, as in figure 2 it is shown, through wires hole 1211 connects with annular seal space.Electric wire is worn
Cross through wires hole 1211 to connect the solar battery sheet 110 outside positive pentagonal pyramid platform 121 and the output current acquisition in annular seal space
With control circuit plate 130.Generally, through wires hole 1211 is arranged at the corner of positive pentagonal pyramid platform 121 end face, concrete, a corner
A through wires hole 1211 can be offered.The arranging of through wires hole 1211 can facilitate solar battery sheet 110 and output current acquisition with
The connection of control circuit plate 130.
Please continue to refer to Fig. 2, the both sides of solar battery sheet 110 can arrange busbar 111, the busbar 111 of both sides
All it is connected with electric wire, it is simple to the conveying that solar battery sheet 110 is current generated.
The supporting construction 120 of sunlight sensor 100 disclosed in the present embodiment itself can be positive pentagonal pyramid platform 121；
Supporting construction 120 can also arrange positive pentagonal pyramid platform 121.The latter, a kind of concrete forming method is generally used to be: supporting construction
120 cut sth. askew and form by cylindrical-shaped structure carries out five deciles.
In the embodiment of the present invention, output current acquisition can also include critesistor and current compensation list with control circuit
Unit.Critesistor is arranged at supporting construction 120, and for detecting the actual work temperature of described solar battery sheet 110；Electric current
Compensating unit is for implementing to compensate to the output electric current of solar battery sheet 110；Shown in compensation relationship such as formula (1):
I0=I-(T-T0)·η (1)
Wherein, T is the actual work temperature of solar battery sheet；I is the output electric current of the solar battery sheet of actual measurement；T0
Temperature, I are tested in reference for solar battery sheet0It is T for corresponding temperature under the conditions of current light0Time output electric current, η is too
The temperature coefficient of the electric current of sun energy cell piece, η is determined by the concrete kind of solar battery sheet.
The output size of current of solar battery sheet 110 is relevant with ambient temperature.Temperature when solar battery sheet 110 is tested
Degree is T0, above-mentioned preferred version, by solar battery sheet 110 work process when actual work temperature T actually detected defeated
Go out electric current and be converted to T0Output electric current under state, according to T0Output electric current under state calculates solar direction vector.The most aobvious
So, this more accurately can determine solar incident angle according to output electric current, and then can more accurately resolve solar direction arrow
Amount.
Based on sun sensor disclosed in the embodiment of the present invention, the application is also disclosed the determination side of a kind of solar direction vector
Method, this determines that the process that realizes of method uses above sun sensor described by any one.
Refer to the determination method flow diagram that Fig. 5, Fig. 5 are solar direction vector disclosed in the embodiment of the present invention.Shown in Fig. 5
Flow process comprise the following steps:
S100, output electric current according to solar battery sheet determine solar incident angle.
In the application, the output electric current of solar battery sheet 110 and solar incident angle are cosine curve relation, the most permissible
Relation according to both is calculated sun solar incident angle on every piece of solar battery sheet 110 by exporting electric current.
Generally, output electric current and the solar incident angle of solar battery sheet 110 can be set up according to cosine curve relation
Between relation correspondence table, can be searched by the output electric current of every piece of solar battery sheet 110 according to this relation correspondence table
Corresponding solar incident angle.It is of course also possible to use linear interpolation method combination to table look-up calculate solar incident angle.Preferably
, table look-up and be spaced apart 3 °.
As described above, in order to improve accuracy of detection, the output electric current of solar battery sheet can be carried out by step S100
Compensate, then carry out, according to the output electric current after compensating, the acquisition solar incident angle that calculates or table look-up.Concrete compensation process can
With reference to the description of corresponding site above, this does not repeats.
S200, selection solar incident angle are less than the solar battery sheet setting threshold value.
Sun sensor disclosed in the embodiment of the present invention operationally, a minimum of 3 pieces of solar battery sheets 110, be up to
Six pieces of solar battery sheets 110 meet solar energy angle of incidence and are not more than 60 °.This kind of situation just can calculate solar direction and vow
Amount.The quantity of the solar battery sheet generally participating in resolving is above three, and this can improve sampling quantity.To this end, preferably, on
State setting threshold value and can be 65 °.In such cases, the output electric current of the solar battery sheet 110 of relatively polylith is used for composition solution
The equation group of calculation solar direction vector, and then the precision of solar direction vector can be improved, calculate too of course it is also possible to improve
The reliability of sun direction vector.It addition, the solar incident angle participating in the solar battery sheet 110 of resolving is both less than 65 °, this can
Reduce the sunlight reflection impact on solar direction vector detection precision.
S300, calculating solar direction vector.
In this step, by normal equation and the cosine value of solar incident angle of the solar battery sheet selected by step S200
Composition equation group, and calculate solar direction vector according to equation group.Generally, participate in resolving solar direction vector
The quantity of solar battery sheet 110 is more than three, it is therefore possible to use method of least square draws optimal solution, this can effectively carry
High measurement accuracy.
Shown in the calculating process such as formula (2) of solar direction vector:
AS=B (2)
Wherein, A is the matrix of the normal direction vector composition of the solaode plate plane meeting condition, and B is corresponding
The cosine of solar incident angle, S is solar direction vector.S solves as shown in formula (3):
S=(A'A)-1A'B (3)
S is the least square optimal solution of equation, and A' is the transposed matrix of A, can be obtained final by parameter normalization
Solar direction vector.
Herein, what each preferred version only emphasis described is different from other scheme, if each preferred version
Do not conflict, can combination in any, the embodiment formed after combination is also within category disclosed in this specification, it is contemplated that
Text is succinct, and the embodiment with regard to no longer being formed combination individually describes herein.
The above is only the detailed description of the invention of the present invention, makes to skilled artisans appreciate that or realize this
Bright.Multiple amendment to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
The above is only the detailed description of the invention of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. sun sensor, including sunlight sensor (100) and solar direction resolution of a vector device (200)；The described sun
Sensing device (100) includes exporting current acquisition and control circuit and solar battery sheet (110)；Described output current acquisition
It is connected with described solar direction resolution of a vector device (200) and described solar battery sheet (110) respectively with control circuit；It is special
Levying and be, described sunlight sensor (100) also includes supporting construction (120)；Described supporting construction (120) has positive five ribs
Frustum (121)；End face and five sides of described positive pentagonal pyramid platform (121) are provided with described solar battery sheet (110)；
The quantity of described sunlight sensor (100) is two；Two described sunlight sensors are respectively used to be installed on
The both sides of satellite；Described positive pentagonal pyramid platform (121) bottom surface of two described sunlight sensors (100) is parallel, and relatively divides
Cloth.
Sun sensor the most according to claim 1, it is characterised in that described positive pentagonal pyramid platform (121) is hollow structure；
Described output current acquisition and control circuit are output current acquisition and control circuit plate (130)；Described output current acquisition with
Control circuit plate (130) is connected to the bottom surface of described positive pentagonal pyramid platform (121), and is formed close with described positive pentagonal pyramid platform (121)
Envelope chamber；Described output current acquisition is positioned at described annular seal space with the electric elements of control circuit plate (130).
Sun sensor the most according to claim 2, it is characterised in that the angle of the end face of described positive pentagonal pyramid platform (121)
Portion all offers through wires hole (1211), and described through wires hole (1211) connects with described annular seal space；Described solar battery sheet (110)
By being connected with control circuit plate (130) through the electric wire of described through wires hole (1211) with described output current acquisition.
Sun sensor the most according to claim 3, it is characterised in that the both sides of described solar battery sheet (110) are equal
It is provided with busbar (111)；Described busbar (111) is all connected with described electric wire.
5. according to the sun sensor described in any one in claim 1-4, it is characterised in that described positive pentagonal pyramid platform
(121) bottom margin is provided with outer (122)；Described outer (122) is provided with the connecting hole for being connected with described satellite
(1221)。
Sun sensor the most according to claim 1；It is characterized in that, described output current acquisition also wraps with control circuit
Include critesistor and current compensation unit；Described critesistor is arranged at described supporting construction (120), and described in being used for detecting too
The actual work temperature of sun energy cell piece (110)；Defeated for described solar battery sheet (110) of described current compensation unit
Go out electric current to implement to compensate；Compensation relationship is:
I0=I-(T-T0)·η
Wherein, T is the actual work temperature of solar cell piece；I is the output electric current of the solar battery sheet of actual measurement；T0For the sun
The reference test temperature of energy cell piece, I0It is T for corresponding temperature under the conditions of current light0Time output electric current, η is solar-electricity
The temperature coefficient of the output electric current of pond sheet.
7. solar direction vows method for determination of amount, it is characterised in that use the sun as described in any one in claim 1-6
Sensor realizes；Comprise the steps:
71) solar incident angle is determined according to the output electric current of described solar battery sheet；
71) selecting described solar incident angle less than the described solar battery sheet setting threshold value, the described threshold value that sets is as 65 °；
72) according to normal equation and the cosine value institute of corresponding described solar incident angle of selected described solar battery sheet
The equation group of composition calculates solar direction vector.
The most according to claim 7 determine method, it is characterised in that step 71) entered with the sun by inquiry output electric current
The relation correspondence table of firing angle obtains the described solar incident angle of every piece of described solar battery sheet.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840172A (en) * | 2017-02-27 | 2017-06-13 | 上海微小卫星工程中心 | Analog sun sensor and its mounting structure and measuring method |
| CN110702116A (en) * | 2019-10-08 | 2020-01-17 | 沈阳航空航天大学 | Unit sun vector solving method and measuring device based on photocell array current |
| CN111024093A (en) * | 2019-12-23 | 2020-04-17 | 南京航空航天大学 | Method for determining sun vector based on sunlight incident angle by using spherical pole projection method |
| CN114269648A (en) * | 2019-07-22 | 2022-04-01 | 帝奥瑞波特有限公司 | Satellite module for attitude determination |
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