CN103687463A - Electromagnetic shielding method of satellite cables - Google Patents
Electromagnetic shielding method of satellite cables Download PDFInfo
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- CN103687463A CN103687463A CN201310642592.2A CN201310642592A CN103687463A CN 103687463 A CN103687463 A CN 103687463A CN 201310642592 A CN201310642592 A CN 201310642592A CN 103687463 A CN103687463 A CN 103687463A
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Abstract
The invention provides an electromagnetic shielding method of satellite cables. The method includes the steps that first, electromagnetic wave shielding fabric and a bonding material are tested; numbers of the cables in which shielding processing is needed and a number of an electric coupler are recorded; the electromagnetic wave shielding fabric is tailored according to different cables, and the bonding material is bonded on the edge of the electromagnetic wave shielding fabric; the electromagnetic wave shielding fabric is bonded on a bunch of cables, so that a cable segment shielding layer is formed; the electromagnetic wave shielding fabric and Teflon thin films are manufactured into an electric coupler template according to the size of the electric coupler; the electric coupler template is wound outside the electric coupler to form an electric coupler shielding outer layer; the electromagnetic wave shielding fabric coating the electric coupler is erected on the outer layer of the bunch of cables; the Teflon thin films are wound outside the electric coupler coated with the electromagnetic wave shielding fabric and outside the bunch of cables, and the cable assembly after being coated is tested. The electromagnetic shielding method of the satellite cables has the advantages of effectively lowering the weight of satellite borne cables, and improving the EMI performance and reliability of the satellite cables.
Description
Technical field
The present invention relates to assembly secondary electromangnetic spectrum field on Satellite, particularly, relate to cable electromagnetic shielding method on a kind of Satellite.
Background technology
Electromagnetic environment is complicated in Satellite, and spaceborne number of cables is many, interface is various, cause satellite ground test and operation on orbit during the effect of electromagnetic shielding directly have influence on whole star electromagnetic compatibility index, become a ring important in whole star EMC Design.Cable secondary electromagnetic shielding is a kind of shielding character that utilizes material, builds a kind of method of shielding body at the spaceborne cable of moulding outward.Due to features such as control of product quality on space compactness, star on star are strict, unit quantity is many, so become one of focus of many satellites concerns for the secondary shield technology of spaceborne cable.At present, the polytypic satellite such as Fengyun-II satellite, No. three satellites of wind and cloud all adopts this technology to carry out secondary shield to spaceborne cable.Wherein the foundation of the choosing of secondary shield material, screening model all directly affects satellite EMI (Electromagnetic Interference, electromagnetic interference) performance and the life-span after secondary shield.Therefore, choosing suitable material sets up appropriate secondary shield model that spaceborne cable is carried out to secondary shield is particularly important.
At present, the secondary shield method of cable is various both at home and abroad, but the method that the electric connector of spaceborne cable is together shielded together with cable application is less, the part spacecraft of the U.S. can be worked out sleeve pipe as secondary shield material with aramid fiber in cable outside, domestic many units are carrying out the measure of the secondary shield that EMC (Electromagnetic Compatibility, Electro Magnetic Compatibility) when test can be using silver-gilt copper wire sleeve pipe as land cable.Yet those methods are as adopting traditional antistatic sleeve pipe to realize secondary shield, exist and increase spaceborne cable weight, the shortcoming that reliability is low.
Summary of the invention
For defect of the prior art, the object of this invention is to provide cable electromagnetic shielding method on a kind of Satellite.
The present invention is achieved by the following technical solutions:
A cable electromagnetic shielding method on Satellite, utilizes electromagnetic wave screen fabric to build secondary shield mechanism to electric connector, cable conductor, grounded part in cable assembly, comprises the following steps:
The first step, tests to electromagnetic wave screen fabric, adhesives, checks whether electromagnetic wave screen fabric and adhesives outward appearance have running, folder measuring resistance whether to meet the requirements;
Second step, will need cable number and the electric connector number record of shielding processing to get off, and it be standby to make label paper;
The 3rd step, according to the hot knife cutting electromagnetic wave screen fabric for cable of different-diameter, different length, avoids the running of electromagnetic wave screen fabric edge, and pastes adhesives at its edge;
The 4th step, be placed on operating desk bunch of cables is straight, the polyimides double-sided pressure-sensitive protection sheet of electromagnetic wave screen fabric one side is removed, stick on bunch of cables, avoid being wound around along electric cable rotary, guarantee electromagnetic wave screen fabric and bunch of cables laminating, without large play, form cable segments screen;
The 5th step, according to the electric connector size of different model by electromagnetic wave screen fabric and polytetrafluoroethylene film setting-out, cutting;
The 6th step, pastes adhesives at the electromagnetic wave screen fabric edge cutting, and makes electric connector template, and with adhesive tape, the exposed screen in electric connector hood gap is partly carried out to insulation processing;
The 7th step, the electric connector template that step 6 is handled well is wrapped in outside electric connector, reliably bonding, forms electric connector shield external layer;
The 8th step, rides over bunch of cables skin by the coated electromagnetic wave screen fabric of electric connector, guarantees the lap of splice;
The 9th step, is wound around polytetrafluoroethylene film outward at the electric connector and the bunch of cables that are coated electromagnetic wave screen fabric;
The tenth step, tests to the cable assembly being covered to complete with visual method, surface electrical conducting method etc., completes coated.
Preferably, electromagnetic wave screen fabric is electromagnetic wave screen fabric.
Preferably, adhesives is double faced adhesive tape.
Preferably, in the 6th step, adhesive tape is blue adhesive tape.
Preferably, the lap of splice >=5mm in the 8th step.
On Satellite provided by the invention, the method for cable electromagnetic shielding is to redesign on the method basis of using when land cable EMC tests, do not find at present explanation and the report of technology similar to the present invention, not yet collect both at home and abroad similarly data yet.The present invention adopts integral coating method, by selection material targetedly, solve the problem of spaceborne cable weight, improve the EMI index of spaceborne cable, be satisfied with the requirement in satellite EMI performance and life-span, obtained following beneficial effect: the present invention utilizes the Novel shielding material of electromagnetic wave screen fabric to replace traditional antistatic sleeve pipe in conjunction with adhesives, by the assemblies such as spaceborne different size electric connector, cable are built to secondary shield mechanism outward, promote the antijamming capability of spaceborne cable, strengthen the stability of low frequency signal in star, reduce the weight of spaceborne low-frequency cable.Therefore, compared with prior art, the present invention has the spaceborne cable weight of effective reduction, improves the advantage of cable EMI Performance And Reliability on star.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the construction of cable schematic diagram after utilizing cable electromagnetic shielding method on Satellite of the present invention to shield;
In figure: 1 is electric connector shield external layer, 2 is electric connector and cable conductor section screen lap-joint, and 3 is adhesives, and 4 is cable segments screen, and 5 is cable branch line segment screen.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The invention provides the method for cable shield on a kind of Satellite, utilize Novel shielding material to locate to adopt the method for bulk shielding to carry out the measure of cable electromagnetic shielding on star to cable electric connector, cable segments etc.Below in conjunction with Fig. 1, the present invention is specifically described.
Refer to Fig. 1, cable electromagnetic shielding method on a kind of Satellite, utilizes electromagnetic wave screen fabric to build secondary shield mechanism to electric connector, cable conductor, grounded part in cable assembly, comprises the following steps:
The first step, tests to electromagnetic wave screen fabric, adhesives, checks whether electromagnetic wave screen fabric and adhesives outward appearance have running, folder measuring resistance whether to meet the requirements.
Second step, will need cable number and the electric connector number record of shielding processing to get off, and it be standby to make label paper.
The 3rd step, according to the hot knife cutting electromagnetic wave screen fabric for cable of different-diameter, different length, avoids the running of electromagnetic wave screen fabric edge, and pastes adhesives at its edge.
The 4th step; be placed on operating desk bunch of cables is straight; the polyimides double-sided pressure-sensitive protection sheet of electromagnetic wave screen fabric one side is removed; stick on bunch of cables; avoid being wound around along electric cable rotary; guarantee electromagnetic wave screen fabric and bunch of cables laminating, without large play, form cable segments screen.
The 5th step, according to the electric connector size of different model by electromagnetic wave screen fabric and polytetrafluoroethylene film setting-out, cutting.
The 6th step, pastes adhesives at the electromagnetic wave screen fabric edge cutting, and makes electric connector template, and with adhesive tape, the exposed screen in electric connector hood gap is partly carried out to insulation processing.
The 7th step, the electric connector template that step 6 is handled well is wrapped in outside electric connector, reliably bonding, forms electric connector shield external layer.
The 8th step, rides over bunch of cables skin by the coated electromagnetic wave screen fabric of electric connector, guarantees the lap of splice.
Particularly, the lap of splice >=5mm.
The 9th step, is wound around polytetrafluoroethylene film outward at the electric connector and the bunch of cables that are coated electromagnetic wave screen fabric.
The tenth step, tests to the cable assembly being covered to complete with visual method, surface electrical conducting method etc., completes coated.
Further, electromagnetic wave screen fabric is electromagnetic wave screen fabric; Adhesives is double faced adhesive tape, and adhesive tape is blue adhesive tape.
Further, if core of a cable has branch, according to the first step to the four steps, son field is carried out to shielding processing, by branch cable and core of a cable overlap joint, then the coated electromagnetic wave screen fabric of branch cable is ridden over to core of a cable skin afterwards, form cable branch line segment screen, finally, according to the 9th step and the tenth step, at the branch cable and the bunch of cables that are coated electromagnetic wave screen fabric, be wound around polytetrafluoroethylene film check outward, complete coated.
The present invention utilizes the Novel shielding material of electromagnetic wave screen fabric to replace traditional antistatic sleeve pipe in conjunction with adhesives, by the assemblies such as spaceborne different size electric connector, cable are built to secondary shield mechanism outward, promote the antijamming capability of spaceborne cable, strengthen the stability of low frequency signal in star, reduce the weight of spaceborne low-frequency cable.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (5)
1. a cable electromagnetic shielding method on Satellite, is characterized in that, utilizes electromagnetic wave screen fabric to build secondary shield mechanism to electric connector, cable conductor, grounded part in cable assembly, comprises the following steps:
The first step, tests to electromagnetic wave screen fabric, adhesives, checks whether electromagnetic wave screen fabric and adhesives outward appearance have running, folder measuring resistance whether to meet the requirements;
Second step, will need cable number and the electric connector number record of shielding processing to get off, and it be standby to make label paper;
The 3rd step, according to the hot knife cutting electromagnetic wave screen fabric for cable of different-diameter, different length, avoids the running of electromagnetic wave screen fabric edge, and pastes adhesives at its edge;
The 4th step, be placed on operating desk bunch of cables is straight, the polyimides double-sided pressure-sensitive protection sheet of electromagnetic wave screen fabric one side is removed, stick on bunch of cables, avoid being wound around along electric cable rotary, guarantee electromagnetic wave screen fabric and bunch of cables laminating, without large play, form cable segments screen;
The 5th step, according to the electric connector size of different model by electromagnetic wave screen fabric and polytetrafluoroethylene film setting-out, cutting;
The 6th step, pastes adhesives at the electromagnetic wave screen fabric edge cutting, and makes electric connector template, and with adhesive tape, the exposed screen in electric connector hood gap is partly carried out to insulation processing;
The 7th step, the electric connector template that step 6 is handled well is wrapped in outside electric connector, reliably bonding, forms electric connector shield external layer;
The 8th step, rides over bunch of cables skin by the coated electromagnetic wave screen fabric of electric connector, guarantees the lap of splice;
The 9th step, is wound around polytetrafluoroethylene film outward at the electric connector and the bunch of cables that are coated electromagnetic wave screen fabric;
The tenth step, tests to the cable assembly being covered to complete with visual method, surface electrical conducting method etc., completes coated.
2. cable electromagnetic shielding method on Satellite according to claim 1, is characterized in that, described electromagnetic wave screen fabric is electromagnetic wave screen fabric.
3. cable electromagnetic shielding method on Satellite according to claim 1, is characterized in that, described adhesives is double faced adhesive tape.
4. cable electromagnetic shielding method on Satellite according to claim 1, is characterized in that, described in the 6th step, adhesive tape is blue adhesive tape.
5. cable electromagnetic shielding method on Satellite according to claim 1, is characterized in that, the lap of splice >=5mm described in the 8th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642592.2A CN103687463B (en) | 2013-12-03 | 2013-12-03 | Cable electromagnetic shielding method on Satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642592.2A CN103687463B (en) | 2013-12-03 | 2013-12-03 | Cable electromagnetic shielding method on Satellite |
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| Publication Number | Publication Date |
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| CN103687463A true CN103687463A (en) | 2014-03-26 |
| CN103687463B CN103687463B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310642592.2A Active CN103687463B (en) | 2013-12-03 | 2013-12-03 | Cable electromagnetic shielding method on Satellite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106516162A (en) * | 2016-11-22 | 2017-03-22 | 上海卫星工程研究所 | Electromagnetic extra-static satellite platform design method |
| CN107833704A (en) * | 2017-11-09 | 2018-03-23 | 北京卫星环境工程研究所 | The electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229850A1 (en) * | 2008-03-11 | 2009-09-17 | International Business Machines Corporation | Cable For High Speed Data Communications |
| US20100108350A1 (en) * | 2008-11-05 | 2010-05-06 | International Business Machines Corporation | Cable For High Speed Data Communications |
| 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 |
-
2013
- 2013-12-03 CN CN201310642592.2A patent/CN103687463B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229850A1 (en) * | 2008-03-11 | 2009-09-17 | International Business Machines Corporation | Cable For High Speed Data Communications |
| US20100108350A1 (en) * | 2008-11-05 | 2010-05-06 | International Business Machines Corporation | Cable For High Speed Data Communications |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106516162A (en) * | 2016-11-22 | 2017-03-22 | 上海卫星工程研究所 | Electromagnetic extra-static satellite platform design method |
| CN107833704A (en) * | 2017-11-09 | 2018-03-23 | 北京卫星环境工程研究所 | The electronics conducting parts EMC shielding processing techniques of reconnaissance spacecraft out of my cabin |
| CN107833704B (en) * | 2017-11-09 | 2019-08-20 | 北京卫星环境工程研究所 | The electronics conducting parts EMC shielding processing technique of reconnaissance spacecraft out of my cabin |
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| Publication number | Publication date |
|---|---|
| CN103687463B (en) | 2016-05-11 |
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