CN110356590A - A kind of thermal control method and thermal controls apparatus for camera small outside star - Google Patents
A kind of thermal control method and thermal controls apparatus for camera small outside star Download PDFInfo
- Publication number
- CN110356590A CN110356590A CN201910569888.3A CN201910569888A CN110356590A CN 110356590 A CN110356590 A CN 110356590A CN 201910569888 A CN201910569888 A CN 201910569888A CN 110356590 A CN110356590 A CN 110356590A
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- Prior art keywords
- camera
- small
- star
- thermistor
- outside
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/52—Protection, safety or emergency devices; Survival aids
- B64G1/58—Thermal protection, e.g. heat shields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/66—Arrangements or adaptations of apparatus or instruments, not otherwise provided for
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Critical Care (AREA)
- Emergency Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Studio Devices (AREA)
Abstract
A kind of thermal control method for camera small outside star comprises the following steps that and sprays outside star pitch-dark on small camera, camera small outside star is mounted in deck board by heat insulating mattress (4)；One layer of heating sheet (2) is pasted on the mirror head outer shell of small camera outside star, pastes thermistor (1) on mirror head outer shell, thermistor (1) includes main part thermistor and backup thermistor；Other than star outside the opposite face of the mounting surface of the light inlet of small camera and camera lens on camera body, the other faces of camera small outside star are coated with multilayer insulation (3).The method that methods and apparatus of the present invention has used Active thermal control and passive thermal control to combine realizes the thermal control to thermal capacitance equipment small outside star.
Description
Technical field
The present invention relates to a kind of thermal control method and thermal controls apparatus, realize especially with active heating and multilayer coating structure to star
The device and method of outer short-term job equipment.
Background technique
Microsatellite technology rapidly develops so that satellite functional diversities, while demand of the user to satellite function is also more next
It is more.Due to equipment component installation requirement, it is necessary to be mounted on out of my cabin, but the outer thermal environment of star is complicated, while have solar radiation,
A variety of Orbital heat flux such as ball infra-red radiation, earth light influence.When satellite transit to earth's shadow area, star external equipment temperature can be rapid
It reduces, if device temperature can exceed rapidly operating temperature range without reliable thermal control measure, stops working.
The equipment being currently installed in outside star is usually the large scale equipments such as camera, is mounted with that multichannel heating circuit carries out in equipment
Active temperature control, however short-term job is directed to outside star for small camera, if calorific value is led greatly when operating all with multilayer coating structure
Temperature is caused sharply to increase, if staying enough radiating surfaces, the sharp temperature drop when it does not work and reaches earth's shadow area.And star
Outer small camera thermal capacitance is smaller, will receive satellite body and surface other equipment are blocked, and thermal control design is difficult.
Summary of the invention
Technical problem solved by the invention is: for being currently installed in, small camera thermal control design outside the star to work outside star is difficult
Degree is big, and the present invention provides a kind of thermal control method and thermal controls apparatus for camera small outside star.
Above-mentioned purpose of the invention is achieved through the following technical solutions: a kind of thermal control side for camera small outside star
Method comprises the following steps that
It is sprayed outside star pitch-dark on small camera, camera small outside star is mounted in deck board by heat insulating mattress；
One layer of heating sheet is pasted on the mirror head outer shell of small camera outside star, thermistor, temperature-sensitive are pasted on mirror head outer shell
Resistance includes main part thermistor and backup thermistor；
Other than star outside the opposite face of the mounting surface of the light inlet of small camera and camera lens on camera body, by phase small outside star
The other faces of machine are coated with multilayer insulation.
The heat insulating mattress is mounted on four installation feet of small camera outside star for polyimide material heat insulating mattress with a thickness of 3mm
On.
The thermistor type be MF61 type, quantity be 2, backup thermistor when main part thermistor damages again
It uses.
The heating sheet is the heating sheet of Kapton encapsulation, includes 2 heating circuits, power is respectively 3W；Heating
Piece is pasted onto the mirror head outer shell of small camera outside star by GD414 silicon rubber, and the length of heating sheet is less than camera lens perimeter.
The heating sheet uses closed-loop control, using the thermistor pasted on camera small outside star as temperature measuring point, temperature control section
Be -5 DEG C to -3 DEG C: when the temperature that thermistor measures is lower than -5 DEG C, heating sheet is started to work, and is heated to camera small outside star,
When the temperature that thermistor measures is higher than -3 DEG C, heating sheet stops working.
The multilayer insulation is the multilayer material of Unit 15, towards star outside outermost layer be that 1 unit single side is aluminized polyamides
Imines film, most inner side are the two-sided polyimide film of aluminizing of Unit 1；The multilayer material of each unit includes one among multilayer insulation
The two-sided aluminized polyester film and one layer of terylene net of 6 μm of layer.
A kind of thermal controls apparatus for camera small outside star, including heat insulating mattress, heating sheet, thermistor, multilayer insulation；Star
Spray pitch-dark on outer small camera, small camera is mounted in deck board by heat insulating mattress outside star；Heating sheet is pasted onto small camera outside star
On mirror head outer shell；Thermistor is pasted on mirror head outer shell, and thermistor includes main part thermistor and backup thermistor, standby
Part thermistor is reused when main part thermistor damages；Heating sheet uses closed-loop control, with what is pasted on camera small outside star
Thermistor is temperature measuring point, and temperature control section is -5 DEG C to -3 DEG C: when the temperature that thermistor measures is lower than -5 DEG C, heating sheet is opened
Beginning work, to camera heating small outside star, when the temperature that thermistor measures is higher than -3 DEG C, heating sheet stops working；Multilayer every
Thermosphere coats the opposite face of the mounting surface of the light inlet of small camera and camera lens on camera body other than star of small camera outside star
Outer other faces.
The heat insulating mattress is mounted on four installation feet of small camera outside star for polyimide material heat insulating mattress with a thickness of 3mm
On.
The heating sheet is the heating sheet of Kapton encapsulation, includes 2 heating circuits, power is respectively 3W；Heating
Piece is pasted onto the mirror head outer shell of small camera outside star by GD414 silicon rubber, and the length of heating sheet is less than camera lens perimeter.
The multilayer insulation is the multilayer material of Unit 15, towards star outside outermost layer be that 1 unit single side is aluminized polyamides
Imines film, most inner side are the two-sided polyimide film of aluminizing of Unit 1；The multilayer material of each unit includes one among multilayer insulation
The two-sided aluminized polyester film and one layer of terylene net of 6 μm of layer.
The present invention has the advantage that compared with prior art are as follows:
(1) thermal control method provided by the present invention for small camera outside star, has used Active thermal control and passive thermal control phase
In conjunction with method, realize the thermal control to thermal capacitance equipment small outside star.
(2) present invention devises the sinking path of small camera using apparatus body as radiating surface, and devises and actively heat back
Road, it is ensured that small camera temperature is not less than working index.
(3) present invention becomes small camera and hot-fluid in small camera surface except radiating surface region outer cladding multilayer insulation
Change complicated extraneous space environment to separate.
Detailed description of the invention
Attached drawing 1 is the thermal controls apparatus schematic diagram for camera small outside star.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
A kind of thermal control method for camera small outside star, as shown in Figure 1, including the following steps:
Camera small outside star is installed by heat insulating mattress 4 and deck board, pastes one layer of heating sheet on the camera lens of small camera outside star
2, heating sheet 2 is pasted by GD414 silicon rubber, and heating sheet 2 is dimensioned slightly smaller than camera lens perimeter, and 2 heat are pasted on camera lens
Quick resistance 1, respectively based on part thermistor and backup thermistor.Small camera is coated with multilayer insulation 3 outside star, other than star
The opposite face of mounting surface of the light inlet and camera lens of small camera on camera body does not coat.Other faces all coat multilayer insulation
Layer 3.
A kind of four parts composition of the thermal controls apparatus for camera small outside star as shown in Figure 1, including thermistor 1, heating
Piece 2, multilayer insulation 3, heat insulating mattress 4.Spray pitch-dark outside star on small camera, small camera is mounted on deck board by heat insulating mattress 4 outside star
On；Heating sheet 2 is pasted onto outside star on the mirror head outer shell of small camera；Thermistor 1 is pasted on mirror head outer shell, and thermistor 1 wraps
Include main part thermistor and backup thermistor；The small camera other than star that multilayer insulation 3 coats small camera outside star enters light
Other faces outside the mouth face opposite with mounting surface of the camera lens on camera body.
Small camera is made of camera body and camera lens outside star, and camera body and mirror head outer shell are metal material, surface spraying
It is pitch-dark.Camera body generates heat when working, and does not generate heat after stopping working.
Heat insulating mattress 4 is that polyimide material heat insulating mattress is mounted on four installation feet of small camera outside star with a thickness of 3mm,
Outside star between small camera and deck board, for reducing the heat transmission outside deck board and star between small camera.
1 type of thermistor is MF61 type, and quantity is 2, is pasted on the shell of camera lens.
Heating sheet 2 is the heating sheet of Kapton encapsulation, includes 2 heating circuits, power is respectively 3W.
Heating sheet 2 uses closed-loop control, with the thermistor 1 pasted on camera small outside star for temperature measuring point, temperature control section is-
5 DEG C Dao -3 DEG C.When the temperature that thermistor 1 measures is lower than -5 DEG C, heating sheet is started to work, and to camera heating small outside star, works as heat
Heating sheet 2 stops working when the temperature that quick resistance 1 measures is higher than -3 DEG C.
Heating sheet 2 is to be pasted onto outside star on the camera lens of small camera using GD414 silicon rubber.
Multilayer insulation 3 is the multilayer material of Unit 15, towards star outside outermost layer be that 1 unit single side is aluminized polyimides
Film, most inner side are the two-sided polyimide film of aluminizing of Unit 1.The multilayer material of each unit includes one layer 6 among multilayer insulation 3
μm two-sided aluminized polyester film and one layer of terylene net.
Multilayer insulation 3 is cut according to the appearance profile of camera small outside star, is coated on outside star on the outside of small camera, outside star
The camera lens and machine back cable mounting surface of small camera do not coat.
Multilayer insulation 3 keeps apart camera small outside star and the cold darkness environment of space, sky of the small camera to low temperature outside reduction star
Between leak heat.Heat insulating mattress 4 keeps apart camera small outside star and installation deck board, and the fluctuation of deck board temperature is avoided to cause small camera temperature outside star
Degree significantlys change.The light inlet of small camera and the back side opposite with light inlet are exposed as radiating surface outside star, by phase small outside star
The heat that machine operation generates is radiated in cold black space.One is used as main part thermistor in thermistor 1, another work
For backup thermistor, backup thermistor is reused when main part is damaged.In thermistor 1 outside main part thermosensitive resistance measurement star
The temperature of small camera simultaneously passes the House keeping system in star back, if the temperature of main part thermosensitive resistance measurement is low in thermistor 1
In -5 DEG C, 2 circuit of heating sheet is connected, and starts to heat to camera small outside star, when the temperature of heating sheet 2 is higher than -3 DEG C, heating sheet
Power-off stops heating to camera small outside star.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (10)
1. a kind of thermal control method for camera small outside star, which is characterized in that comprise the following steps that
It is sprayed outside star pitch-dark on small camera, camera small outside star is mounted in deck board by heat insulating mattress (4)；
One layer of heating sheet (2) is pasted on the mirror head outer shell of small camera outside star, pastes thermistor (1) on mirror head outer shell, heat
Quick resistance (1) includes main part thermistor and backup thermistor；
Other than star outside the opposite face of the mounting surface of the light inlet of small camera and camera lens on camera body, by camera small outside star
Other faces are coated with multilayer insulation (3).
2. a kind of thermal control method for camera small outside star according to claim 1, it is characterised in that: the heat insulating mattress
(4) it is mounted on four installation feet of small camera outside star for polyimide material heat insulating mattress with a thickness of 3mm.
3. a kind of thermal control method for camera small outside star according to claim 1 or 2, it is characterised in that: the temperature-sensitive
Resistance (1) type is MF61 type, and quantity is 2, and backup thermistor is reused when main part thermistor damages.
4. a kind of thermal control method for camera small outside star according to claim 3, it is characterised in that: the heating sheet
(2) it is the heating sheet of Kapton encapsulation, includes 2 heating circuits, power is respectively 3W；Heating sheet (2) passes through GD414 silicon
Rubber is pasted onto the mirror head outer shell of small camera outside star, and the length of heating sheet (2) is less than camera lens perimeter.
5. a kind of thermal control method for camera small outside star according to claim 4, it is characterised in that: the heating sheet
(2) closed-loop control is used, with the thermistor (1) pasted on camera small outside star for temperature measuring point, temperature control section is -5 DEG C to -3 DEG C:
When the temperature that thermistor (1) measures is lower than -5 DEG C, heating sheet (2) is started to work, to camera heating small outside star, when temperature-sensitive electricity
When the temperature that resistance (1) measures is higher than -3 DEG C, heating sheet (2) stops working.
6. a kind of thermal control method for camera small outside star according to claim 5, it is characterised in that: the multilayer insulation
Layer (3) is the multilayer material of Unit 15, towards star outside outermost layer be that 1 unit single side is aluminized polyimide film, most inner side is 1 single
The two-sided polyimide film of aluminizing of member；The multilayer material of the intermediate each unit of multilayer insulation (3) includes that one layer 6 μm two-sided is aluminized
Polyester film and one layer of terylene net.
7. a kind of thermal controls apparatus for camera small outside star, it is characterised in that: including heat insulating mattress (4), heating sheet (2), temperature-sensitive electricity
Hinder (1), multilayer insulation (3)；Spray pitch-dark outside star on small camera, small camera is mounted in deck board by heat insulating mattress (4) outside star；
Heating sheet (2) is pasted onto outside star on the mirror head outer shell of small camera；Thermistor (1) is pasted on mirror head outer shell, thermistor (1)
Including main part thermistor and backup thermistor, backup thermistor is reused when main part thermistor damages；Heating sheet
(2) closed-loop control is used, with the thermistor (1) pasted on camera small outside star for temperature measuring point, temperature control section is -5 DEG C to -3 DEG C:
When the temperature that thermistor (1) measures is lower than -5 DEG C, heating sheet (2) is started to work, to camera heating small outside star, when temperature-sensitive electricity
When the temperature that resistance (1) measures is higher than -3 DEG C, heating sheet (2) stops working；Multilayer insulation (3) coat star outside small camera in addition to
Other faces outside star outside the opposite face of the mounting surface of the light inlet of small camera and camera lens on camera body.
8. a kind of thermal controls apparatus for camera small outside star according to claim 7, it is characterised in that: the heat insulating mattress
(4) it is mounted on four installation feet of small camera outside star for polyimide material heat insulating mattress with a thickness of 3mm.
9. a kind of thermal control method for camera small outside star according to claim 7 or 8, it is characterised in that: the heating
Piece (2) is the heating sheet of Kapton encapsulation, includes 2 heating circuits, power is respectively 3W；Heating sheet (2) passes through GD414
Silicon rubber is pasted onto the mirror head outer shell of small camera outside star, and the length of heating sheet (2) is less than camera lens perimeter.
10. a kind of thermal control method for camera small outside star according to claim 9, it is characterised in that: the multilayer every
Thermosphere (3) is the multilayer material of Unit 15, towards star outside outermost layer be that 1 unit single side is aluminized polyimide film, most inner side 1
The two-sided polyimide film of aluminizing of unit；The multilayer material of the intermediate each unit of multilayer insulation (3) includes one layer 6 μm of two-sided plating
Aluminium polyester film and one layer of terylene net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569888.3A CN110356590A (en) | 2019-06-27 | 2019-06-27 | A kind of thermal control method and thermal controls apparatus for camera small outside star |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569888.3A CN110356590A (en) | 2019-06-27 | 2019-06-27 | A kind of thermal control method and thermal controls apparatus for camera small outside star |
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| CN110356590A true CN110356590A (en) | 2019-10-22 |
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| CN201910569888.3A Pending CN110356590A (en) | 2019-06-27 | 2019-06-27 | A kind of thermal control method and thermal controls apparatus for camera small outside star |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111891407A (en) * | 2020-07-21 | 2020-11-06 | 上海卫星工程研究所 | Temperature equalization control device and control method under unbalanced external heat flow condition |
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Application publication date: 20191022 |