CN107833704A - The electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin - Google Patents
The electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin Download PDFInfo
- Publication number
- CN107833704A CN107833704A CN201711096229.XA CN201711096229A CN107833704A CN 107833704 A CN107833704 A CN 107833704A CN 201711096229 A CN201711096229 A CN 201711096229A CN 107833704 A CN107833704 A CN 107833704A
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- China
- Prior art keywords
- film
- cabin
- polyimide film
- aluminized polyester
- polyester film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
Abstract
The invention discloses the EMC shielding processing techniques that a kind of reconnaissance spacecraft goes out cabin electronics conducting parts, this technique is wrapped around using two-sided aluminized polyester film (or polyimide film) to the cabin part that goes out of electronics conducting parts, it is attached by copper-foil conducting electricity and whole star grounded screen, can effectively reduce in cabin be not intended to electron radiation by go out cabin electronics conducting parts pass out out of my cabin, to out of my cabin it is high-precision detect receive antenna system interfere.
Description
Technical field
The invention belongs to EMC shielding processing technical fields, in particular it relates to which a kind of defend for electronic reconnaissance
The EMC shielding processing techniques of star, including to star outside low-frequency cable, high frequency cable, the EMC shielding processings of waveguide.
Background technology
Satellite is the intensive functional of an electronic electric equipment, the system of technical sophistication, the frequency that it is not only covered
Scope is wide, and integrates powerful device and high sensitivity equipment, and the inside and outside electromagnetic environment of its work is extremely complex.To protect
Card satellite can be subjected to the electromagnetic environment in the ground that each working stage must undergo and space, and according to predetermined design
Energy index normal work, completes assigned tasks, it is desirable to the Electro Magnetic Compatibility of satellite is taken into full account in satellite development process
(Electro Magnetic Compatibility abbreviation EMC).The difference of function is used according to satellite, is configured with different
Payload, common passing of satelline star catalogue multilayer ground connection can meet that EMC shields index request, and the electronics for going out cabin is conducted
Part does not have processing requirement.But reconnaissance spacecraft be equipped with it is high-precision detect receipts antenna system, the sensitivity of antenna is high, passes
Although the EMC shielding processings method of system can shield substantial amounts of electromagnetic interference signal, few small-signal still can be by going out
The electronics conducting parts in cabin pass out out of my cabin, are detectd receipts antenna system and received, interfered.To prevent star inner electronic equipment
Unintended radiation passed out by going out the electronics conducting parts in cabin and reconnaissance spacecraft interfered out of my cabin, it is necessary to going out cabin
Electronics conducting parts carry out EMC shielding processings.Because domestic and international pertinent arts can not be found, therefore, carry out crucial
Technical research, to explore a kind of EMC shielding processing techniques for going out cabin electronics conducting parts for reconnaissance spacecraft.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to propose a kind of electronics of reconnaissance spacecraft out of my cabin
Conducting parts for example go out the EMC shielding processing techniques of cabin cable and waveguide, using two-sided aluminized polyester film or two-sided poly- Asia of aluminizing
The material that amine film shields as EMC, cabin cable, waveguide progress EMC shielding processings are gone out to reconnaissance spacecraft.
The present invention seeks to what is be achieved through the following technical solutions:
The electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) the cabin part that goes out of electronics conducting parts is wound and is coated with carry out secondary insulating using polyimide film,
Polyimide film termination is fixed using polyimide film base one side pressure-sensitive adhesive film;
2) bag is wound using two-sided aluminized polyester film or polyimide film again to the cabin part that goes out of electronics conducting parts
One layer is covered, two-sided aluminized polyester film or polyimide film termination is fixed with one side pressure-sensitive adhesive film;
3) according to step 2) again with two-sided aluminized polyester film or polyimide film to it is above-mentioned go out cabin part coat winding one again
The two-sided aluminized polyester film of layer or polyimide film;
4) using copper-foil conducting electricity by two-sided aluminized polyester film aluminize face or polyimide film is connect with deck board grounded screen
Ground.
Wherein, the electronics conducting parts are low-frequency cable, high frequency cable or waveguide.
The EMC shielding processing techniques of the low-frequency cable of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) using 20 μm of -25 μm of polyimide films low-frequency cable is gone out cabin part be wound be coated with carry out it is secondary absolutely
Edge, polyimide film termination are fixed using polyimide film base one side pressure-sensitive adhesive film;
2) go out cabin part to low-frequency cable using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film to twine
Around one layer of cladding, two-sided aluminized polyester film or polyimide film termination is fixed with one side pressure-sensitive adhesive film;
3) coated again going out cabin part to low-frequency cable with two-sided aluminized polyester film or polyimide film again according to step 2)
Wind one layer of two-sided aluminized polyester film or polyimide film;
4) copper-foil conducting electricity is used by aluminize face or polyimide film and the deck board of the two-sided aluminized polyester film outside low-frequency cable
Grounded screen is grounded.
In above-mentioned technical proposal, the purpose that polyimide film is wound outside low-frequency cable is secondary insulating, polyimide film
Thickness is 20 μm.
The EMC shielding processing techniques of the high frequency cable of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) go out cabin part to high frequency cable using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film to twine
Around cladding one layer of two-sided aluminized polyester film or polyimide film, termination is fixed with one side pressure-sensitive adhesive film;
2) high frequency cable is gone out with 18 μm -20 μm of two-sided aluminized polyester film or polyimide film again according to step 1)
Cabin part coats winding one layer of 18 μm -20 μm two-sided aluminized polyester film or polyimide film again;
3) copper-foil conducting electricity is used by aluminize face or polyimide film and the deck board of the two-sided aluminized polyester film outside high frequency cable
Grounded screen is grounded.
The waveguide EMC shielding processing techniques of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) twined using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film to going out across the cabin part of cabin waveguide
Around cladding one layer of two-sided aluminized polyester film or polyimide film, termination is fixed with one side pressure-sensitive adhesive film;
2) coated again with two-sided aluminized polyester film or polyimide film to going out across the cabin part of cabin waveguide again according to step 1)
Wind one layer of 18 μm -20 μm two-sided aluminized polyester film or polyimide film;
3) copper-foil conducting electricity is used by aluminize face or polyimide film and the deck board ground connection of the two-sided aluminized polyester film outside waveguide
Net is grounded.
In above-mentioned technical proposal, two-sided aluminizer or polyimide film have air-vent every 20cm.
In above-mentioned technical proposal, the thickness of polyimide film and two-sided aluminized polyester film is slightly different.
It is low that cabin is gone out to reconnaissance spacecraft using reconnaissance spacecraft EMC shielding processings process proposed by the present invention
After frequency cable, high frequency cable, waveguide carry out EMC shielding processings, the equipment electron radiation in cabin can be made to reduce 10dB after going out cabin
~15dB, the EMC requirements of electronic reconnaissance class satellite can be met through satellite EMC verification experimental verifications.
Embodiment
The present invention is described in further detail below, but this is merely exemplary, it is no intended to the guarantor of the present invention
Protect scope and carry out any restrictions.
The polyimide film and the thickness of two-sided aluminized polyester film used in the present invention can be identical, can also be slightly different.
But it is required that polyimide film, two-sided aluminized polyester film are not easy to break during being wrapped around, at the same require polyimide film,
Two-sided aluminized polyester film can not be difficult to be wrapped around very much firmly.
The reconnaissance spacecraft low-frequency cable EMC shielding processings of embodiment 1
Go out cabin low-frequency cable secondary insulating method:
The use of width is 35mm, thickness is that 25 μm of polyimide film strip is wound cladding to going out cabin low-frequency cable,
Coated length 130mm out of cabin is coated to external cable plug, it is desirable to which polyimide film winding is close, mutually overlaps about
20%, the polyimide-based one side pressure sensitive adhesive tape in polyimide film termination, which is pasted, to be fixed.
Go out cabin low-frequency cable EMC processing methods:
1) the use of width is 35mm, thickness is that 18 μm of two-sided polymer PET strip of aluminizing is wrapped to going out cabin low-frequency cable
Cover, coated length be out of cabin about at 100mm to out of my cabin at low-frequency cable electric connector;It is required that two-sided polymer PET winding of aluminizing
Closely, about 50% is mutually overlapped, two-sided aluminized polyester film termination is fixed with one side pressure sensitive adhesive tape;Two-sided polymer PET strip of aluminizing
Curtailment, can be overlapped, it is desirable to the outer surface of the two-sided aluminized polyester film of overlap joint be overlapped it is two-sided aluminize it is poly-
The inner surface contact length portion of ester film is less than 30mm, and lap-joint is fixed with one side pressure sensitive adhesive tape;Two-sided aluminized polyester film is wound to
The position in cabin penetrating structure hole need to reserve the bar for being about 200mm, with the ground connection to two-sided aluminized polyester film.
2) with situation is turned between aluminizer outside digital multimeter measurement cable, 70 Ω/m should be not more than, if be unsatisfactory for
This is required, then needs to coat again;
3) requirement according to step 1) is going out outside the low-frequency cable of cabin to be wrapped around again one layer of two-sided aluminized polyester film, and presses
Meet to require according to step 2) detection aluminizer conducting situation;
4) the aluminizer bar for being reserved cabin penetrating structure hole with the copper-foil conducting electricity that size is about 50mm × 50mm in deck board with leading
Electrolytic copper paper tinsel overlaps, and conductive copper chaff is typically no less than 20mm × 50mm with copper-foil conducting electricity overlap joint size in aluminizer bar, deck board;
5) aluminizer and the conducting situation of deck board grounded screen outside cable are measured with digital multimeter, with not less than 30 Ω.
The reconnaissance spacecraft high frequency cable EMC shielding processings of embodiment 2
Go out cabin high frequency cable secondary insulating method:
The use of width is 30mm, thickness is that 20 μm of polyimide film strip is wound cladding to going out cabin low-frequency cable,
Coated length 130mm out of cabin is coated to external cable plug, it is desirable to which polyimide film winding is close, mutually overlaps about
20%, the polyimide-based one side pressure sensitive adhesive tape in polyimide film termination, which is pasted, to be fixed.
Go out cabin high frequency cable EMC processing methods:
1) the use of width is 30mm, thickness is that 20 μm of two-sided polymer PET strip of aluminizing is wrapped to going out cabin high frequency cable
Cover, coated length be out of cabin about at 100mm to out of my cabin at low-frequency cable electric connector;It is required that two-sided polymer PET winding of aluminizing
Closely, about 50% is mutually overlapped, two-sided aluminized polyester film termination is fixed with one side pressure sensitive adhesive tape;Two-sided polymer PET strip of aluminizing
Curtailment, can be overlapped, it is desirable to the outer surface of the two-sided aluminized polyester film of overlap joint be overlapped it is two-sided aluminize it is poly-
The inner surface contact length portion of ester film is less than 30mm, and lap-joint is fixed with one side pressure sensitive adhesive tape;Two-sided aluminized polyester film is wound to
The position in cabin penetrating structure hole need to reserve the bar for being about 200mm, with the ground connection to two-sided aluminized polyester film.
2) with situation is turned between aluminizer outside digital multimeter measurement cable, 70 Ω/m should be not more than, if be unsatisfactory for
This is required, then needs to coat again;
3) requirement according to step 1) is going out outside the high frequency cable of cabin to be wrapped around again one layer of two-sided aluminized polyester film, and presses
Meet to require according to step 2) detection aluminizer conducting situation;
4) the aluminizer bar for being reserved cabin penetrating structure hole with the copper-foil conducting electricity that size is about 50mm × 50mm in deck board with leading
Electrolytic copper paper tinsel overlaps, and conductive copper chaff is typically no less than 20mm × 50mm with copper-foil conducting electricity overlap joint size in aluminizer bar, deck board;
5) aluminizer and the conducting situation of deck board grounded screen outside cable are measured with digital multimeter,
The reconnaissance spacecraft waveguide EMC shielding processings of embodiment 3
Go out cabin waveguide EMC processing methods:
1) the use of width is 30mm, thickness is that 18 μm of two-sided polymer PET strip of aluminizing coats to going out cabin waveguide, is wrapped
Cover length be out of cabin at first waveguide flange to out of my cabin at first waveguide flange;It is required that two-sided polymer PET of aluminizing
Winding is close, mutually overlap joint about 50%, and two-sided aluminized polyester film termination is fixed with one side pressure sensitive adhesive tape;Two-sided polymer PET of aluminizing
The curtailment of strip, it can be overlapped, it is desirable to the outer surface of the two-sided aluminized polyester film of overlap joint and the two-sided plating being overlapped
The inner surface contact length portion of aluminium polyester film is less than 30mm, and lap-joint is fixed with one side pressure sensitive adhesive tape;Two-sided aluminized polyester film twines
It need to reserve around to the position in cabin penetrating structure hole and be about 200mm bar, with the ground connection to two-sided aluminized polyester film.
2) with situation is turned between aluminizer outside digital multimeter measurement cable, 70 Ω/m should be not more than, if be unsatisfactory for
This is required, then needs to coat again;
3) requirement according to step 1) is going out outside the waveguide of cabin to be wrapped around again one layer of two-sided aluminized polyester film, and according to step
The rapid aluminizer conducting situation that 2) detects meets to require;
4) the aluminizer bar for being reserved cabin penetrating structure hole with the copper-foil conducting electricity that size is about 50mm × 50mm in deck board with leading
Electrolytic copper paper tinsel overlaps, and conductive copper chaff is typically no less than 20mm × 50mm with copper-foil conducting electricity overlap joint size in aluminizer bar, deck board;
5) with aluminizer and the conducting situation of deck board grounded screen outside digital multimeter measurement cable, it is desirable to not less than 30 Ω.
Wherein, two-sided aluminized polyester film can also be replaced forming new embodiment with polyimide film, can be reached identical
Technique effect.
Go out cabin low-frequency cable, high frequency cable, waveguide and the method for cabin penetrating structure hole EMC processing for reconnaissance spacecraft,
Reducing and reduce reconnaissance spacecraft below deck equipment, unintentionally electron radiation is gone out cabin cable, waveguide is taken out of and enters electronics out of my cabin
The interception system of reconnaissance satellite and interfere.
Although giving detailed description and explanation to the embodiment of patent of the present invention above, it should be noted that
, we can carry out various equivalent changes and modification to above-mentioned embodiment according to the conception of patent of the present invention, and it is produced
, all should be within the protection domain of patent of the present invention during the spirit that raw function is still covered without departing from specification.
Claims (8)
1. the electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) the cabin part that goes out of electronics conducting parts is wound and is coated with carry out secondary insulating using polyimide film, polyamides is sub-
Amine film termination is fixed using polyimide film base one side pressure-sensitive adhesive film;
2) cladding one is wound using two-sided aluminized polyester film or polyimide film again to the cabin part that goes out of electronics conducting parts
Layer, two-sided aluminized polyester film or polyimide film termination is fixed with one side pressure-sensitive adhesive film;
3) according to step 2) again with two-sided aluminized polyester film or polyimide film to it is above-mentioned go out to coat one layer of winding again double for cabin part
Face aluminized polyester film or polyimide film;
4) using copper-foil conducting electricity by two-sided aluminized polyester film aluminize face or polyimide film is grounded with deck board grounded screen.
2. technique as claimed in claim 1, wherein, the electronics conducting parts are low-frequency cable, high frequency cable or waveguide.
3. the EMC shielding processing techniques of the low-frequency cable of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) go out cabin part to low-frequency cable using 20 μm of -25 μm of polyimide films and be wound and be coated with carry out secondary insulating, gather
Acid imide film termination is fixed using polyimide film base one side pressure-sensitive adhesive film;
2) cabin part is gone out to low-frequency cable using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film and is wound cladding
One layer, two-sided aluminized polyester film or polyimide film termination is fixed with one side pressure-sensitive adhesive film;
3) winding is coated again going out cabin part to low-frequency cable with two-sided aluminized polyester film or polyimide film again according to step 2)
One layer of two-sided aluminized polyester film or polyimide film;
4) copper-foil conducting electricity is used by aluminize face or polyimide film and the deck board ground connection of the two-sided aluminized polyester film outside low-frequency cable
Net is grounded.
4. technique as claimed in claim 3, wherein, the purpose that polyimide film is wound outside low-frequency cable is secondary insulating, is gathered
The thickness of acid imide film is 20 μm.
5. the EMC shielding processing techniques of the high frequency cable of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) cabin part is gone out to high frequency cable using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film and is wound cladding
One layer of two-sided aluminized polyester film or polyimide film, termination is fixed with one side pressure-sensitive adhesive film;
2) cabin part is being gone out to high frequency cable with 18 μm -20 μm of two-sided aluminized polyester film or polyimide film again according to step 1)
Winding one layer of 18 μm -20 μm two-sided aluminized polyester film or polyimide film are coated again;
3) copper-foil conducting electricity is used by aluminize face or polyimide film and the deck board ground connection of the two-sided aluminized polyester film outside high frequency cable
Net is grounded.
6. the waveguide EMC shielding processing techniques of reconnaissance spacecraft out of my cabin, comprise the following steps:
1) cladding is wound to going out across the cabin part of cabin waveguide using 18 μm -20 μm of two-sided aluminized polyester film or polyimide film
One layer of two-sided aluminized polyester film or polyimide film, termination is fixed with one side pressure-sensitive adhesive film;
2) winding is being coated again to going out across the cabin part of cabin waveguide with two-sided aluminized polyester film or polyimide film again according to step 1)
One layer of 18 μm -20 μm two-sided aluminized polyester film or polyimide film;
3) using copper-foil conducting electricity by the two-sided aluminized polyester film outside waveguide aluminize face or polyimide film enters with deck board grounded screen
Row ground connection.
7. the technique as described in claim any one of 1-6, wherein, two-sided aluminizer or polyimide film have saturating every 20cm
Stomata.
8. the technique as described in claim any one of 1-6, wherein, the thickness of polyimide film and two-sided aluminized polyester film slightly has
It is different.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109878095A (en) * | 2019-01-28 | 2019-06-14 | 北京卫星环境工程研究所 | Spacecraft device table mark and its manufacture craft based on space environment |
CN113581497A (en) * | 2021-08-02 | 2021-11-02 | 北京卫星环境工程研究所 | Star surface film structure with strong electromagnetic environment protection capability and mounting method |
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CN102543320A (en) * | 2011-11-15 | 2012-07-04 | 上海卫星工程研究所 | Shielding processing method used for satellite low-frequency cable/plug |
CN203070807U (en) * | 2012-12-06 | 2013-07-17 | 上海裕达实业公司 | Outer shielding casing for satellite cable |
CN103687463A (en) * | 2013-12-03 | 2014-03-26 | 上海卫星装备研究所 | Electromagnetic shielding method of satellite cables |
CN103956630A (en) * | 2014-05-21 | 2014-07-30 | 航天东方红卫星有限公司 | Method for inhibiting accidental radiation emission of satellite cabin passing cables |
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Patent Citations (5)
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WO2010036405A1 (en) * | 2008-05-07 | 2010-04-01 | Nanocomp Technologies, Inc. | Nanostructure composite sheets and methods of use |
CN102543320A (en) * | 2011-11-15 | 2012-07-04 | 上海卫星工程研究所 | Shielding processing method used for satellite low-frequency cable/plug |
CN203070807U (en) * | 2012-12-06 | 2013-07-17 | 上海裕达实业公司 | Outer shielding casing for satellite cable |
CN103687463A (en) * | 2013-12-03 | 2014-03-26 | 上海卫星装备研究所 | Electromagnetic shielding method of satellite cables |
CN103956630A (en) * | 2014-05-21 | 2014-07-30 | 航天东方红卫星有限公司 | Method for inhibiting accidental radiation emission of satellite cabin passing cables |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109878095A (en) * | 2019-01-28 | 2019-06-14 | 北京卫星环境工程研究所 | Spacecraft device table mark and its manufacture craft based on space environment |
CN109878095B (en) * | 2019-01-28 | 2021-01-05 | 北京卫星环境工程研究所 | Spacecraft watch identification based on space environment and manufacturing process thereof |
CN113581497A (en) * | 2021-08-02 | 2021-11-02 | 北京卫星环境工程研究所 | Star surface film structure with strong electromagnetic environment protection capability and mounting method |
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