CN102543320A - Shielding processing method used for satellite low-frequency cable/plug - Google Patents
Shielding processing method used for satellite low-frequency cable/plug Download PDFInfo
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- CN102543320A CN102543320A CN2011103623918A CN201110362391A CN102543320A CN 102543320 A CN102543320 A CN 102543320A CN 2011103623918 A CN2011103623918 A CN 2011103623918A CN 201110362391 A CN201110362391 A CN 201110362391A CN 102543320 A CN102543320 A CN 102543320A
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- electromagnetic wave
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- wave shielding
- shielding cloth
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Abstract
The invention discloses a shielding processing method used for a satellite low-frequency cable/plug, which comprises the following steps of selecting shielding materials, lofting and tailoring, wrapping and conducting pretreatment, conducting shielding process of the cable/ plug and conducting superfluity resisting process. The shielding processing method solves the problem of shielding process of the cable/ plug on a satellite and has the advantages of being simple and convenient in application, obvious in shielding effect, strong in adaptability and the like.
Description
Technical field
The present invention relates to a kind of shielding processing method, particularly a kind of shielding processing method that is used for satellite low-frequency cable/plug.
Background technology
At present, star has adopted strip line with low-frequency cable, but can not effectively suppress the interference of high frequency radiation/Induced by Space Electrostatic Discharges.For example: accidental of short duration losing lock of antenna and the indivedual remote measurement mode bit of satellite turning problem repeatedly take place at rail in the FY-2C star, after analyzing, need to discharge and recharge at the anti-space of satellite cable net static to have taked relative measures aspect the interference performance.After a large amount of ground experiment checkings; Adopted the processing method of coated cable of Copper Foil and hood thereof; But in the operating process of reality, find because Copper Foil ruptures easily under external force, not good to the shield effectiveness of static discharge, and its poor plasticity, reliability are low.For this reason, how to improve the reliability of low-frequency cable/plug shielding measure, and can solve the Induced by Space Electrostatic Discharges interference problem, these a series of problems are all mentioned agenda, are the problems of needing solution badly.
The present invention relates to the method for satellite low-frequency cable shielding processing, do not have at present to find explanation or report, also do not collect similar data as yet with similar techniques of the present invention.
Summary of the invention
In order to solve low-frequency cable/plug space static electricity interference problem, take shielding measure outside low-frequency cable or outside the plug, the object of the present invention is to provide the method for a kind of low-frequency cable or plug shielding processing.Utilize the present invention, can solve the problem that causes owing to the satellite spatial electrostatic interference, especially for being subject to Induced by Space Electrostatic Discharges interference signals transmission line.
In order to reach the foregoing invention purpose, the technical scheme that the present invention is adopted for its technical problem of solution provides a kind of shielding processing method that is used for satellite low-frequency cable/plug, and this method comprises the steps:
Step 1: select electromagnetic wave shielding cloth for use: carry out ESD test according to American army mark 1541A, carry out vacuum material volatile performance test, carry out process implementing after satisfying instructions for use according to the QJ1558 standard;
Step 2: measuring needs coated bunch of cables: need the diameter D of coated bunch of cables or measure the circumference circle S that needs coated bunch of cables with tape with kind of calliper, measuring with tape needs coated cable length L;
Step 3: on electromagnetic wave shielding cloth, rule: operating personnel wear clean undershirt fabric gloves; Elder generation is ordinary telegram magnetic wave shielding cloth on the operating desk upper berth; Rule according to the relative position of the coated cable each several part of need with pencil and long chi, the line direction is parallel with warp, the parallel of cloth;
Step 4: cutting electromagnetic wave shielding cloth: with scissors set by step three line of being drawn electromagnetic shielding cloth is carried out cutting, warp, parallel along electromagnetic wave shielding cloth when cutting out are cut;
Step 5: the electromagnetic wave shielding cloth after the step 4 cutting is carried out edge sealing handle: there is the burr part in elder generation inwardly about the 2mm of nest limit with the electromagnetic wave shielding cloth after the cutting; The polyimides double-sided pressure-sensitive is cut into rectangular about wide 6-8mm; The protection sheet of its one side is torn, stick on the edge of electromagnetic wave shielding cloth along the electromagnetic wave shielding cloth length, the Width that cut;
Step 6: coated electromagnetic wave shielding cloth: be placed on the operating desk bunch of cables is straight; Polyimides double-sided pressure-sensitive protection sheet on the long limit of electromagnetic wave shielding cloth one side is removed, stick on the bunch of cables the long limit of the electromagnetic wave shielding cloth that assurance is pasted and the parallel axes of cable; Electromagnetic wave shielding cloth circumferentially is adjacent to winding along bunch of cables; Guarantee the applying of electromagnetic wave shielding cloth and bunch of cables, remove the protection sheet of the polyimides double-sided pressure-sensitive on the long limit of electromagnetic wave shielding cloth opposite side, paste, fix with first lap electromagnetic wave shielding cloth; Make coated electromagnetic wave shielding cloth form the cavity of a sealing
Step 7: detect the bunch of cables of coated electromagnetic shielding cloth with universal instrument, any 2 conducting resistance is less than 1 Ω;
Step 8: coated polytetrafluoroethylene film: be placed on the operating desk the bunch of cables of coated electromagnetic wave shielding cloth is straight; Begin to twine coating one deck from an end of bunch of cables trunk with the polytetrafluoroethylene film bar that cuts; Overlapping width uses the glue of polyimides double-faced pressure-sensitive firm at 5mm～10mm then.
Further; In step 2; If bunch of cables has branch; Then with kind of calliper need coated bunch of cables trunk diameter D and each branch diameter or measure the circumference circle S of the trunk that needs coated bunch of cables and the circumference circle of each branch with tape, measure the length L of the trunk that needs coated cable and the length of each branch with tape.
Further, in step 6, prevaricate coated branch cable earlier if cable has branch, coated again leader cable, coated leader cable and branch's infall should guarantee principal piece and segmentation intersect/overlapping greater than 15mm.
Further, in step 7, measuring point is chosen as follows: measuring point is not chosen two ends when bunch of cables has branch, and measuring point is chosen the coated or many two ends of overlap joint node of segmentation when bunch of cables has branch.
Further, need shielding processing, then after the processing of the cable completing steps of holding under the plug six, carry out the shielding processing of plug if having plug on the cable.
Further, with the conducting resistance between the plug of shielding processing on the universal instrument detection streamer, generally require any 2 resistance less than 1 Ω.
Further, said electromagnetic wave shielding cloth is copper nickel electromagnetic wave shielding cloth.
Satellite low-frequency cable of the present invention/plug screen method; Owing to take said method, can accomplish not change original low-frequency cable net design and layout, only increase few weight; Do not influence under the situation of whole other performances of star, the low-frequency cable net is obtained best shield effectiveness.Therefore, the present invention has obtained the interference problem that is easy to implement, effectively eliminates Induced by Space Electrostatic Discharges and cause, has not influenced beneficial effect such as whole other performances of star.
Description of drawings
Fig. 1 cable instrumentation plan;
Fig. 2 sketch map of ruling;
Fig. 3 shielding cloth edge sealing is handled sketch map;
Schematic cross-section behind the coated shielding cloth of Fig. 4 cable;
The coated electromagnetic shielding cloth of Fig. 5 cable branch sketch map;
The relative lap sketch map of Fig. 6 cable backbone and branch;
Coated polyimide film sketch map after Fig. 7 shielding processing;
Wherein: 1-double-sided pressure-sensitive, 2-flanging, 3-cable, 4-electromagnetic wave shielding cloth, the coated district of 5-cable branch electromagnetic shielding cloth, the coated zone of 6-cable backbone electromagnetic shielding cloth, 7-overlapping region.
The practical implementation method
The anti-static discharge interference performance aspect, space of satellite cable net takes appropriate measures, and generally adopts coated plug of Copper Foil or cable.But in the operating process of reality, find because Copper Foil ruptures easily under external force, thereby cause, even disappearance to the weakening of electrostatic screen effect.In order to improve the reliability of shielding measure, the technical staff searches new shielding material in many ways, proposes a kind of shielding processing method that is used for satellite low-frequency cable/plug, and this method adopts following steps:
Step 1: electromagnetic wave shielding cloth is selected for use: carry out ESD test according to American army mark 1541A, carry out vacuum material volatile performance test according to the QJ1558 standard, carry out process implementing after satisfying instructions for use, present embodiment adopts copper nickel electromagnetic wave shielding cloth.
Step 2: measure: need the diameter D of coated bunch of cables or measure the circumference circle S that needs coated bunch of cables with tape with kind of calliper, measuring with tape needs coated cable length L.With Fig. 1 cable is that example describes.
| The measurement project | Measured |
Measured |
Measured |
| Cable length | L1 | L2 | L3 |
| Cable size | D1 | D2 | D3 |
Table 1 has the cable of branch and measures project
Step 3: line: operating personnel wear clean undershirt fabric gloves, and the ordinary telegram magnetic wave shielding cloth on the operating desk upper berth is rule according to the locations of structures of the coated cable with branch of need with pencil and long chi earlier, and the line direction is parallel with the graticule of cloth as far as possible.
| Project | Setting-out |
Setting-out |
Setting-out |
| Length | ?L1+(15～20)mm | L2+(10～15)mm | L3+(10～15)mm |
| Width | ?5D1～6D1 | 5D2～6D2 | 5D3～6D3 |
Table 2 line sketch map line size table
Step 4: cutting:, come off by the line cutting with scissors, cut along warp, the parallel of electromagnetic wave shielding cloth when cutting out as far as possible for reducing the electromagnetic wave shielding measuring fiber.
Step 5: edge sealing is handled: earlier electromagnetic wave shielding is furnished with the burr part inwardly about the 2mm of nest limit; The polyimides double-sided pressure-sensitive is cut into rectangular about wide 6-8mm; The protection sheet of its one side is torn, paste along the electromagnetic wave shielding cloth length that cuts, Width.With the L2 section is the example explanation, handles sketch map and sees Fig. 3.
Step 6: coated electromagnetic wave shielding cloth: be placed on the operating desk bunch of cables is straight; The polyimides double-sided pressure-sensitive protection sheet of electromagnetic wave shielding cloth one side is removed; Stick on the bunch of cables; Guarantee the parallel axes of long limit of the electromagnetic wave shielding cloth of pasting and cable as far as possible, avoid twining along the cable rotation.Electromagnetic wave shielding cloth circumferentially is adjacent to winding along cable, guarantees that electromagnetic wave shielding cloth and bunch of cables fit, no big play removes the protection sheet of the polyimides double-sided pressure-sensitive on the opposite side electromagnetic wave shielding cloth, with the stickup of first lap electromagnetic wave shielding cloth, fix.With guarantee coated electromagnetic wave shielding cloth form the cavity of a sealing, as shown in Figure 4.
Cable has branch, should first coated branch cable, and coated again leader cable.Coated leader cable and branch's infall ought to guarantee principal piece and segmentation intersect/overlapping greater than 15mm, like Fig. 5, shown in Figure 6.
Also need shielding processing like plug on this cable, then after end cable under the plug is accomplished this procedure, carry out the shielding processing of plug.
Step 7: detect: the cable that detects coated electromagnetic shielding cloth with universal instrument; Any 2 conducting resistance is less than 1 Ω; Measuring point is generally chosen between cable two ends, trunk end and each branch end, each branch end; Promptly do not have the branch cable measuring point and choose two ends, have the branch cable measuring point to choose the coated or many two ends of overlap joint node of segmentation, to detect the continuity of screen.
Step 8: coated polytetrafluoroethylene film: be placed on the operating desk bunch of cables is straight; Begin to twine coating one deck from bunch of cables one end (trunk) with the polytetrafluoroethylene film bar that cuts; Overlapping width is at 5mm～10mm; Use the glue of polyimides double-faced pressure-sensitive firm, as shown in Figure 7 at last.
Detect:, generally require any 2 resistance less than 1 Ω with the conducting resistance between the plug of shielding processing on the universal instrument detection streamer.
In sum, method of the present invention only increases few weight not changing original low-frequency cable net design and layout, does not influence under the situation of whole other performances of star, and the low-frequency cable net is obtained best shield effectiveness.The present invention has obtained following beneficial effect:
(1) a kind of method that the low-frequency cable space static electricity disturbs of eliminating is provided; (2) provided simple and efficient low-frequency cable shielding processing implementation step; (3) design provides application case and technical support to the satellite antistatic.
Claims (7)
1. shielding processing method that is used for satellite low-frequency cable/plug, this method comprises the steps:
Step 1: select electromagnetic wave shielding cloth for use: carry out ESD test according to American army mark 1541A, carry out vacuum material volatile performance test, carry out process implementing after satisfying instructions for use according to the QJ1558 standard;
Step 2: measuring needs coated bunch of cables: need the diameter D of coated bunch of cables or measure the circumference circle S that needs coated bunch of cables with tape with kind of calliper, measuring with tape needs coated cable length L;
Step 3: on electromagnetic wave shielding cloth, rule: operating personnel wear clean undershirt fabric gloves; Elder generation is ordinary telegram magnetic wave shielding cloth on the operating desk upper berth; Rule according to the relative position of the coated cable each several part of need with pencil and long chi, the line direction is parallel with warp, the parallel of cloth;
Step 4: cutting electromagnetic wave shielding cloth: with scissors set by step three line of being drawn electromagnetic shielding cloth is carried out cutting, warp, parallel along electromagnetic wave shielding cloth when cutting out are cut;
Step 5: the electromagnetic wave shielding cloth after the step 4 cutting is carried out edge sealing handle: there is the burr part in elder generation inwardly about the 2mm of nest limit with the electromagnetic wave shielding cloth after the cutting; The polyimides double-sided pressure-sensitive is cut into rectangular about wide 6-8mm; The protection sheet of its one side is torn, stick on the edge of electromagnetic wave shielding cloth along the electromagnetic wave shielding cloth length, the Width that cut;
Step 6: coated electromagnetic wave shielding cloth: be placed on the operating desk bunch of cables is straight; Polyimides double-sided pressure-sensitive protection sheet on the long limit of electromagnetic wave shielding cloth one side is removed, stick on the bunch of cables the long limit of the electromagnetic wave shielding cloth that assurance is pasted and the parallel axes of cable; Electromagnetic wave shielding cloth circumferentially is adjacent to winding along bunch of cables; Guarantee the applying of electromagnetic wave shielding cloth and bunch of cables, remove the protection sheet of the polyimides double-sided pressure-sensitive on the long limit of electromagnetic wave shielding cloth opposite side, paste, fix with first lap electromagnetic wave shielding cloth; Make coated electromagnetic wave shielding cloth form the cavity of a sealing
Step 7: detect the bunch of cables of coated electromagnetic shielding cloth with universal instrument, any 2 conducting resistance is less than 1 Ω;
Step 8: coated polytetrafluoroethylene film: be placed on the operating desk the bunch of cables of coated electromagnetic wave shielding cloth is straight; Begin to twine coating one deck from an end of bunch of cables trunk with the polytetrafluoroethylene film bar that cuts; Overlapping width uses the glue of polyimides double-faced pressure-sensitive firm at 5mm～10mm then.
2. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 1; It is characterized in that in step 2; If bunch of cables has branch; Then with kind of calliper need coated bunch of cables trunk diameter D and each branch diameter or measure the circumference circle S of the trunk that needs coated bunch of cables and the circumference circle of each branch with tape, measure the length L of the trunk that needs coated cable and the length of each branch with tape.
3. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 1; It is characterized in that in step 6; Prevaricate coated branch cable earlier if cable has branch, coated again leader cable, coated leader cable and branch's infall should guarantee principal piece and segmentation intersect/overlapping greater than 15mm.
4. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 1; It is characterized in that in step 7; Measuring point is chosen as follows: measuring point is not chosen two ends when bunch of cables has branch, and measuring point is chosen the coated or many two ends of overlap joint node of segmentation when bunch of cables has branch.
5. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 1 is characterized in that needing shielding processing if having plug on the cable, then after the processing of the cable completing steps of holding under the plug six, carries out the shielding processing of plug.
6. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 5 is characterized in that generally requiring any 2 resistance less than 1 Ω with the conducting resistance between the plug of shielding processing on the universal instrument detection streamer.
7. a kind of shielding processing method that is used for satellite low-frequency cable/plug as claimed in claim 1 is characterized in that said electromagnetic wave shielding cloth is copper nickel electromagnetic wave shielding cloth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362391.8A CN102543320B (en) | 2011-11-15 | 2011-11-15 | Shielding processing method used for satellite low-frequency cable/plug |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362391.8A CN102543320B (en) | 2011-11-15 | 2011-11-15 | Shielding processing method used for satellite low-frequency cable/plug |
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| CN102543320A true CN102543320A (en) | 2012-07-04 |
| CN102543320B CN102543320B (en) | 2014-07-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN112712919A (en) * | 2020-12-21 | 2021-04-27 | 深圳金信诺高新技术股份有限公司 | Shielded wire harness and method for producing shielded wire harness |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687463A (en) * | 2013-12-03 | 2014-03-26 | 上海卫星装备研究所 | Electromagnetic shielding method of satellite cables |
| CN103687463B (en) * | 2013-12-03 | 2016-05-11 | 上海卫星装备研究所 | Cable electromagnetic shielding method on Satellite |
| 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 |
| 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 |
| CN112712919A (en) * | 2020-12-21 | 2021-04-27 | 深圳金信诺高新技术股份有限公司 | Shielded wire harness and method for producing shielded wire harness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102543320B (en) | 2014-07-30 |
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