CN206583982U - A kind of spacecraft multicore shielding cable shielding measurement of effectiveness device - Google Patents
A kind of spacecraft multicore shielding cable shielding measurement of effectiveness device Download PDFInfo
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- CN206583982U CN206583982U CN201720053846.0U CN201720053846U CN206583982U CN 206583982 U CN206583982 U CN 206583982U CN 201720053846 U CN201720053846 U CN 201720053846U CN 206583982 U CN206583982 U CN 206583982U
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Abstract
The utility model discloses a kind of spacecraft multicore shielding cable shielding measurement of effectiveness device.It can realize the test of spacecraft multi-core cable shield effectiveness using the utility model and reduce test result and be affected by the surrounding environment.
Description
Technical field
The utility model is related to electromangnetic spectrum field, and in particular to a kind of spacecraft multicore shielding cable shielding effect
Measurement apparatus.
Background technology
Multi-core cable is widely used on spacecraft, and the spacecraft with complex electromagnetic environment is to including LVDS lines, CAN
All kinds of multicore shielding cables such as bus have higher shielding requirements, and shield effectiveness test is its check system.Due to split conductor with
The essence of the coaxial line of single in design is different, and its measuring method also has very big difference.Method of testing common at present has
Reverberation room method, gtem cell method etc., the shortcoming of this method is very big to condition depended, and in order to ensure measuring accuracy, for
Working frequency is than relatively low test cable, and the size requirement to reverberation chamber will be very high.And the shadow of characteristic is terminated by split conductor
Ring, be difficult to ensure to be reliably connected.
Utility model content
In view of this, the utility model provides a kind of spacecraft multicore shielding cable shielding measurement of effectiveness device, can
Realize the test of spacecraft multi-core cable shield effectiveness and reduce test result and be affected by the surrounding environment, improve interconnecting device certainly
The shielding properties of body, so as to reduce measurement error.
What the utility model was realized in：
Further, the measurement apparatus includes signal source (8), the first interconnecting device (12), the second interconnecting device (17), treats survey line
Cable (14), the first test cable (13), the second test cable (16), spectrum analyzer (15) and test equipment；Signal source (8)
Pass sequentially through the first test cable (13) and the first interconnecting device (12) is connected with cable one end to be measured, the first interconnecting device (12) is used for
The signal of the test cable of shielding first (13) is transported to the electromagnetic exposure during cable to be measured；The other end of cable to be measured is successively
It is connected by the second interconnecting device (17) and the second test cable (16) with spectrum analyzer (15), the second interconnecting device (17) is used for
Shielded signal from cable to be measured (14) be transported to the second test cable (16) during electromagnetic exposure；The test equipment is used for
Detect the shield effectiveness of cable to be measured (14).
Further, interconnecting device includes box body (2), adapter (10), ring flange (9) and socket (1)；The box body (2)
The socket (1) supporting with cable to be measured (14) is distributed with top, and box body (2) is provided with ring flange (9) sideways, and test cable passes through method
Blue disk (9) is connected on interconnecting device box body (2)；The adapter (10) is placed in interconnecting device (2) inside, by adapter (4), coaxially
Cable (5) and Liang Ge bindiny mechanisms are sequentially connected composition, and adapter (4) is connected with ring flange (9)；The cable to be measured (14)
Including cable main body and 2 plugs (11)；2 plugs (11) at cable (14) two ends to be measured insert inserting for two interconnecting devices respectively
In seat (1)；Wherein the inner wire of coaxial cable (5) is connected with a bindiny mechanism, the outer conductor of coaxial cable (5) and other one
Individual bindiny mechanism's connection；The outer end of 2 bindiny mechanisms of company is connected with the plug (11) of cable to be measured (14)；Test cable
It is connected by ring flange (9) in outside with interconnecting device.
Further, the box body (2) of first (12) and the second interconnecting device (17) uses lead-covering material.
Further, bindiny mechanism is contact pin (6) or jack (7).
Further, the bottom plate of box body (2) is boss structure (3).
Further, test equipment includes：EMI antennas, receiver, test and data processing equipment.
Further, the test equipment is respectively placed at cable to be measured (14) both horizontally and vertically 1m.
Beneficial effect：
1st, by using interconnecting device, the test of spacecraft multi-core cable shield effectiveness is realized；The utility model is using radiation
Method examines the shield effectiveness of multicore shielding cable, and common EMC detections darkroom can meet environmental requirement.
2nd, the interconnecting device socket part designed in patent, is matched completely with the plug of cable to be detected, can be realized reliable
Connection.Signal source provides detection signal by adapter for multi-core cable, realizes signal source and the signal of cable internal core wire connects
Connect.Flange played a part of signal transmission after conducting resinl has been applied, both, can increase the shield effectiveness of interconnecting device again, it is to avoid electromagnetism
Leak the influence to test result.
3rd, the size of interconnecting device is space product typical sizes, after the connection of cable and interconnecting device, can integrally simulate boat
The application environment of its product.Tester can be operated and be handled by dismantling bottom plate at any time, very convenient, while bottom plate
Boss structure design can also strengthen the shielding of interconnecting device, reduce measurement error.Whole measurement apparatus can be used for quantifying to measure
Multi-core cable shield effectiveness, and measurement accuracy is high, it is only relevant with EMI test systems.
4th, it can find that multi-core cable shields weak link by measuring multi-core cable shield effectiveness, improve multi-core cable screen
Cover after design, RE102 test results of unit can be improved, so as to avoid unit from repeating experiment, reduce development cost.
Brief description of the drawings
Fig. 1 interconnecting device structural representations.
Fig. 2 interconnecting device top plate socket scheme of installations.
Fig. 3 adapter structure schematic diagrames (a) contact pin adapter schematic diagram (b) jack adapter schematic diagram.
The complete connection diagram of interconnecting device that Fig. 4 is connected with signal source.
Fig. 5 test configurations figures.
Wherein, 1- sockets, 2- box bodys, 3- boss structure structures, 4- adapters, 5- coaxial cables, 6- contact pins, 7- jacks,
8- signal sources, 9-N type ring flanges, 10- adapters, 11- plugs, the interconnecting devices of 12- first, the test cables of 13- first, 14- is to be measured
Cable, 15- spectrum analyzers, the test cables of 16- second, the interconnecting devices of 17- second.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
The utility model provides a kind of spacecraft multicore shielding cable shielding measurement of effectiveness device.
Whole measurement apparatus includes signal source, two interconnecting devices, two adapters, standard cable, spectrum analyzer, EMI
Measure antenna, receiver and standard testing software, data processing software composition.As shown in figure 5, two interconnecting devices are placed in away from examination
Test at table edge 10cm, signal source is connected by the adapter of the first test interconnecting device 12 of cable 13 and first with cable to be measured
14, the other end of cable 14 to be measured is connected by the second interconnecting device 17 and the second test cable 16 with spectrum analyzer 15.EMI is surveyed
Measure the electromagnetic signal of antenna and the leakage of receiver synchro measure cable；Whole synchronizing process is completed by standard testing software.Set
EMI test antennas are that 1.2m is high, and EMI measurements antenna will be both horizontally and vertically away from the multiple tests of setting at connector 1m distances
The main radiating surface of location point, its envelope covering cable and connector.After being measured, shielding effect is provided by data processing software
Really, it is connected by testing cable with receiver.Test software parameter is set, makes signal source frequency sweep synchronous with receiver.
Interconnecting device in test device is made up of box body 2 and adapter two parts, interconnecting device structural representation such as Fig. 1 institutes
Show.Interconnecting device size is 31.5*17.5*20cm, is made of lead-covering material.Made and turned respectively using the thick aluminium sheets of 0.5cm
Connect box and the bottom plate with boss structure 3.Interconnecting device size is 31.5*18*20cm.The size of boss structure 3 of bottom plate is
The size of 29.3*15.8*0.5cm. side plates ring flange 9 is 3*3cm, and transfer through-hole diameter 2.2cm, four screwing through hole diameters
0.2cm。
As shown in figure 3, interconnecting device top plate is dispersed with the socket 1 supporting with wire and cable connector, (classification of socket covers boat
All sockets that its product is related to).As shown in figure 4, the inner hollow of socket 1, without contact pin or jack contact, only leaves outer
Shell.Conductive rubber pad is padded between socket 1 and switching box body 2, conductive glue is used, and apply pressure to ensure rubber blanket with turning knot box
The good contact of body 2.Then, conducting resinl is applied in all installation gaps, prevents electromagnetic leakage.It is respectively arranged with the center of two side plates
N-type (or SMA types etc., this patent is by taking N-type as an example) jack to jack adapter ring flange 9, mode connects for screw is used between ring flange 9 and switching box main body,
Conducting resinl is applied at the surrounding and screw of ring flange.Adapter be located at interconnecting device inside, one end is connected with ring flange, one end and
Plug 11 is connected.Bottom plate is detachable, and gap is less than 0.2mm between bottom plate and box body 2, and is designed with boss structure 3, both adds
The own shield degree of box body 2, again convenient dismounting.
Adapter is divided into two kinds of contact pin adapter and jack adapter, such as shown in Fig. 3 (b), and contact pin adapter is by N-type sun
Head adapter 4, coaxial cable 5 (about 20cm) and contact pin 7 are constituted；As shown in Fig. 3 (a), jack adapter is transferred by N-type male
Head, coaxial cable 5 (about 20cm) and jack 6 are constituted.N-type switching male is connected with the coaxial cable 5 of 20cm length, and coaxial
The other end stripping of insulatin layer of cable 5, exposes the inner wire and outer conductor of coaxial cable 5.By the wire of 5cm length by contact pin 7
Or jack 6 is connected with the inner wire and outer conductor of coaxial cable 5 respectively and (uses welding procedure).And insulation position is done to conductor part
Reason.The one end of adapter 10 is connected with signal source or spectrum analyzer, and the other end passes through contact pin 7 or jack 6 and interconnecting device plug 11
It is connected, as shown in Figure 4.
In summary, preferred embodiment of the present utility model is these are only, is not intended to limit of the present utility model
Protection domain.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. all should be wrapped
It is contained within protection domain of the present utility model.
Claims (7)
1. a kind of spacecraft multicore shielding cable shielding measurement of effectiveness device, it is characterised in that the measurement apparatus includes signal source
(8), the first interconnecting device (12), the second interconnecting device (17), cable to be measured (14), the first test cable (13), the second test cable
(16), spectrum analyzer (15) and test equipment；Signal source (8) passes sequentially through the first test cable (13) and the first interconnecting device
(12) be connected with cable one end to be measured, the first interconnecting device (12) be used for shield the first test cable (13) signal be transported to it is to be measured
Electromagnetic exposure during cable；The other end of cable to be measured passes sequentially through the second interconnecting device (17) and the second test cable (16)
It is connected with spectrum analyzer (15), the second interconnecting device (17) is transported to the second p-wire for shielded signal from cable to be measured (14)
Electromagnetic exposure during cable (16)；The test equipment is used for the shield effectiveness for detecting cable to be measured (14).
2. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 1, it is characterised in that described first
Interconnecting device (12) and the second interconnecting device (17) include box body (2), adapter (10), ring flange (9) and socket (1)；The box
The socket (1) supporting with cable to be measured (14) is distributed with the top of body (2), box body (2) is provided with ring flange (9) sideways, tests cable
It is connected to by ring flange (9) on box body (2)；The adapter (10) is placed in box body (2) inside, by adapter (4), coaxial line
Cable (5) and Liang Ge bindiny mechanisms are sequentially connected composition, and adapter (4) is connected with ring flange (9)；The cable to be measured (14) includes
Cable main body and 2 plugs (11)；2 plugs (11) at cable (14) two ends to be measured insert the socket of two interconnecting devices respectively
(1) in；Wherein the inner wire of coaxial cable (5) is connected with a bindiny mechanism, the outer conductor of coaxial cable (5) and another
Bindiny mechanism connects；The outer end of described two bindiny mechanisms is connected with the plug (11) of cable to be measured (14)；Cable is tested to lead to
Ring flange (9) is crossed in outside with interconnecting device to be connected.
3. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 1, it is characterised in that described first
The box body (2) of interconnecting device (12) and the second interconnecting device (17) uses lead-covering material.
4. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 2, it is characterised in that the connection
Mechanism is contact pin (6) or jack (7).
5. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 2, it is characterised in that the box body
(2) bottom plate is boss structure (3).
6. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 1, it is characterised in that the test
Equipment includes：EMI antennas, receiver, test and data processing equipment.
7. spacecraft multicore shielding cable shielding measurement of effectiveness device as claimed in claim 4, it is characterised in that the test
Equipment is respectively placed at cable to be measured (14) both horizontally and vertically 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053846.0U CN206583982U (en) | 2017-01-17 | 2017-01-17 | A kind of spacecraft multicore shielding cable shielding measurement of effectiveness device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053846.0U CN206583982U (en) | 2017-01-17 | 2017-01-17 | A kind of spacecraft multicore shielding cable shielding measurement of effectiveness device |
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| CN206583982U true CN206583982U (en) | 2017-10-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089075A (en) * | 2017-11-21 | 2018-05-29 | 广电计量检测（西安）有限公司 | The simulating, verifying test device and its method of a kind of shielded cable |
| CN110412371A (en) * | 2019-07-20 | 2019-11-05 | 中国船舶重工集团公司第七二四研究所 | Multi-coaxial cable assembly shield effectiveness detection method based on probe method |
| CN110688652A (en) * | 2019-08-30 | 2020-01-14 | 中国电子科技网络信息安全有限公司 | USB micro electromagnetic leakage signal source |
-
2017
- 2017-01-17 CN CN201720053846.0U patent/CN206583982U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089075A (en) * | 2017-11-21 | 2018-05-29 | 广电计量检测（西安）有限公司 | The simulating, verifying test device and its method of a kind of shielded cable |
| CN110412371A (en) * | 2019-07-20 | 2019-11-05 | 中国船舶重工集团公司第七二四研究所 | Multi-coaxial cable assembly shield effectiveness detection method based on probe method |
| CN110688652A (en) * | 2019-08-30 | 2020-01-14 | 中国电子科技网络信息安全有限公司 | USB micro electromagnetic leakage signal source |
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