CN108089075A - The simulating, verifying test device and its method of a kind of shielded cable - Google Patents
The simulating, verifying test device and its method of a kind of shielded cable Download PDFInfo
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- CN108089075A CN108089075A CN201711165783.9A CN201711165783A CN108089075A CN 108089075 A CN108089075 A CN 108089075A CN 201711165783 A CN201711165783 A CN 201711165783A CN 108089075 A CN108089075 A CN 108089075A
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- test device
- main body
- shielded cable
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- simulating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to the technical field of test device, more particularly, to the simulating, verifying test device and its method of a kind of shielded cable.A kind of simulating, verifying test device of shielded cable, wherein, including test device main body, the shielded cable of test device main body is horizontally through, the test device body exterior is equipped with probe, and probe is connected at the receiver of test device body exterior；Interference source is further included, interference source is connected to outside out of test device main body.Be conducive to the constantly improve of simulation parameter and make its simulation result that can more approach the electromagnetic environment for actually using place, can increase technical advantage in electromagnetic compatibility business afterwards.More importantly, pass through being used cooperatively for Emulation of EMC and test device, can be in a manner of very directly perceived and effectively understand the mechanism of electromagnetic compatibility generation and electromagnetic noise propagation, so as to deepen the understanding and cognition to electromagnetic compatibility problem, the work after being conducive to.
Description
Technical field
The present invention relates to the technical fields of test device, are tested more particularly, to a kind of simulating, verifying of shielded cable
Devices and methods therefor.
Background technology
With the fast development of electronic technology, electronic equipment towards broadband, high integration direction develop while structure
Also even more complex is become.Many complication systems (such as automobile, guided missile, aircraft) have begun to transmit using substantial amounts of cable bundle
Signal, the EMC problems of cable bundle are more and more prominent.In order in the maximum Electro Magnetic Compatibility saved cost and ensure system under shortening
Can, the crosstalk of cable, radiation and the characteristics such as anti-interference must just be emulated in the design phase of product, and the knot emulated
How fruit depends on the verification experimental verification of early period.
The content of the invention
The present invention provides a kind of simulating, verifying of shielded cable to overcome at least one defect described in the above-mentioned prior art
Test device and its method can measure the actual signal of cable sensing in the case where isolating free surrounding space electromagnetic interference.
The technical scheme is that：A kind of simulating, verifying test device of shielded cable, wherein, including test device master
Body, the shielded cable for being horizontally through test device main body, the test device body exterior are equipped with probe, and probe is connected at
The receiver of test device body exterior；Interference source is further included, interference source is connected to outside out of test device main body.
With the continuous development of emulation technology now, how effectively shielded cable emulation and verification result to be combined
Come, shielded cable simulation result is enable to be bonded measured result, and measured result is able to verify that shielded cable emulates, key is that
We go to ensure the authenticity of test signal in actual test, but often more complicated there is various again for actual electromagnetic environment
The electromagnetic wave that various kinds type is enriched, and really have in order to ensure test loop will not be influenced to measure be subject to external electromagnetic ripple
The signal of effect, it is necessary to make a test device to realize.
The interference signal that interference source generates is coupled respectively to shielded cable and test device in certain distance by space
Inner surface has declined completely coupled to the interference signal of test device inner surface by the reflection and ground connection of test device inner surface
Subtract, certain inductive signal can be generated in cored wire after shielding layer segment attenuation coupled to the interference signal of shielded cable；Pass through survey
External monitoring probe is put in trial assembly will obtain the real frequency spectrum component of the inductive signal.
Further, the test device body exterior is equipped with and is used to support probe and the supporting rack of shielded cable.If
Probe fixing support rack and cable support frame is put, makes position of the cable in probe, the test position of probe in each test
Be consistent, to ensure the repdocutbility of test result and comparativity, supporter select non-conductive low-k material to avoid
Influence test result.
Further, the supporting rack bottom is additionally provided with guide rail.Due to the frequency content and line of inductive signal complexity
The architectural characteristic of cable, it is not same position that may influence the optimum value measured every time, so being visited using guide rail by mobile
Head can measure optimum value.
Further, at the shielded cable and test device body contact and test device main body and interference source
Contact position be equipped with interface.The interface is pyramidal structure.Shielded cable shielded layer and the interface of test device use taper
Structure is simultaneously setting groove at test device, and the electric continuity of shielded layer and test device housing can be made to reach optimal.
Test device material selects the best red copper of electric conductivity in aluminium, iron, copper, and L-type is used in junction for head cover
Or U-shaped structure is to ensure the maximum shield effectiveness to electromagnetic wave.
Using the test method of the simulating, verifying test device of the shielded cable, wherein, comprise the following steps：
S1. shielded cable to be measured is installed in test device main body, and by good connection at shielded layer and cone-shaped interface；
S2., the cable of interference source, interference source cable shielding layer and test device main body taper outside test device main body are installed
Interface good connection；
S3. on tested cable, shielded layer removes monitoring current probe card, ensures cored wire in center probe using supporting rack
Position；
S4. interference source applies interference signal, and monitoring current probe, which moves back and forth, looks for amplitude peak.
Compared with prior art, advantageous effect is：For the electromagnetic compatibility quickly grown in recent years in field of electromagnetic compatibility
Emulation, in use can look-ahead Devices to test electromagnetic radiation and compatibility feature, the root of orientation problem and weigh each
The effect that kind of corrective measure improves whole Electro Magnetic Compatibility, can greatly save time that test and positioning solve the problems, such as with
Cost, and the effectively electromagnetic compatibility characteristic of lifting means, and the test device can provide one kind in shielded cable simulating, verifying
Effective reliable means of testing is conducive to the constantly improve of simulation parameter and makes its simulation result that can more approach actual use place
Electromagnetic environment, me can be increased in electromagnetic compatibility business afterwards and take charge of technical advantage.Importantly, it is imitated by electromagnetic compatibility
It is true and test device to be used cooperatively, it can mechanism and electromagnetic noise biography very directly perceived and effectively understanding electromagnetic compatibility generation
The mode broadcast so as to deepen the understanding and cognition to electromagnetic compatibility problem, is conducive to the work after us.
Description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Specific embodiment
Attached drawing is only for illustration, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some components to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by attached drawing.Being given for example only property of position relationship described in attached drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
As shown in Figure 1, a kind of simulating, verifying test device of shielded cable, wherein, including test device main body 5, laterally
Through the shielded cable 1 of test device main body 5,5 outside of test device main body is equipped with probe 2, and probe 2 is connected at test device
Receiver 7 outside main body 5；Interference source 8 is further included, interference source 8 is connected to outside out of test device main body 5.
With the continuous development of emulation technology now, how effectively shielded cable emulation and verification result to be combined
Come, shielded cable simulation result is enable to be bonded measured result, and measured result is able to verify that shielded cable emulates, key is that
We go to ensure the authenticity of test signal in actual test, but often more complicated there is various again for actual electromagnetic environment
The electromagnetic wave that various kinds type is enriched, and really have in order to ensure test loop will not be influenced to measure be subject to external electromagnetic ripple
The signal of effect, it is necessary to make a test device to realize.
In the present embodiment, the interference signal that interference source generates is coupled respectively to shielded cable in certain distance by space
With test device inner surface, pass through reflection and the ground connection of test device inner surface coupled to the interference signal of test device inner surface
Complete attenuation can generate certain sensing letter after shielding layer segment attenuation coupled to the interference signal of shielded cable in cored wire
Number；The real frequency spectrum component of the inductive signal will be obtained by the monitoring probe outside test device.3 represent cored wire.
Specifically, 5 outside of test device main body is equipped with the supporting rack 4 for being used to support probe 2 and shielded cable 1.It sets and visits
Head fixing support rack and cable support frame makes position of the cable in probe, the test position of probe be kept in each test
Unanimously, to ensure the repdocutbility of test result and comparativity, supporter selects non-conductive low-k material to avoid influence
Test result.
4 bottom of supporting rack is additionally provided with guide rail 9.Due to the frequency content of inductive signal complexity and the architectural characteristic of cable,
It is not same position that may influence the optimum value measured every time, so can be measured most preferably by mobile probe using guide rail
Value.
Shielded cable 1 is equipped with 5 contact position of test device main body and test device main body 5 and the contact position of interference source 8
Interface 6.Interface 6 is pyramidal structure.Shielded cable shielded layer and the interface of test device are using pyramidal structure and close to test
Groove at device is set, the electric continuity of shielded layer and test device housing can be made to reach optimal.
Test device material selects the best red copper of electric conductivity in aluminium, iron, copper, and L-type is used in junction for head cover
Or U-shaped structure is to ensure the maximum shield effectiveness to electromagnetic wave.
Using the test method of the simulating, verifying test device of the shielded cable, wherein, comprise the following steps：
S1. shielded cable to be measured is installed in test device main body, and by good connection at shielded layer and cone-shaped interface；
S2., the cable of interference source, interference source cable shielding layer and test device main body taper outside test device main body are installed
Interface good connection；
S3. on tested cable, shielded layer removes monitoring current probe card, ensures cored wire in center probe using supporting rack
Position；
S4. interference source applies interference signal, and monitoring current probe, which moves back and forth, looks for amplitude peak.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (6)
1. the simulating, verifying test device of a kind of shielded cable, which is characterized in that including test device main body（5）, be horizontally through
Test device main body（5）Shielded cable（1）, the test device main body（5）Outside is equipped with probe（2）, probe（2）Connection
Arranged on test device main body（5）External receiver（7）；Further include interference source（8）, interference source（8）From test device main body（5）
Inside it is connected to outside.
2. a kind of simulating, verifying test device of shielded cable according to claim 1, it is characterised in that：The test
Apparatus main body（5）Outside is equipped with and is used to support probe and the supporting rack of shielded cable（4）.
3. a kind of simulating, verifying test device of shielded cable according to claim 2, it is characterised in that：The support
Frame（4）Bottom is additionally provided with guide rail（9）.
4. a kind of simulating, verifying test device of shielded cable according to any one of claims 1 to 3, it is characterised in that：Institute
The shielded cable stated（1）With test device main body（5）Contact position and test device main body（5）With interference source（8）Contact position
Equipped with interface（6）.
5. a kind of simulating, verifying test device of shielded cable according to claim 4, it is characterised in that：The interface
（6）For pyramidal structure.
6. the test method of the simulating, verifying test device using the shielded cable described in claim 5, which is characterized in that including
Following steps：
S1. shielded cable to be measured is installed in test device main body, and by good connection at shielded layer and cone-shaped interface；
S2., the cable of interference source, interference source cable shielding layer and test device main body taper outside test device main body are installed
Interface good connection；
S3. on tested cable, shielded layer removes monitoring current probe card, ensures cored wire in center probe using supporting rack
Position；
S4. interference source applies interference signal, and monitoring current probe, which moves back and forth, looks for amplitude peak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165783.9A CN108089075A (en) | 2017-11-21 | 2017-11-21 | The simulating, verifying test device and its method of a kind of shielded cable |
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| CN201711165783.9A CN108089075A (en) | 2017-11-21 | 2017-11-21 | The simulating, verifying test device and its method of a kind of shielded cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966624A (en) * | 2017-11-21 | 2018-04-27 | 广电计量检测（西安）有限公司 | A kind of simulating, verifying test device 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 |
| CN113740618A (en) * | 2021-08-06 | 2021-12-03 | 中国电力科学研究院有限公司 | Comprehensive environment simulation device for testing board card level equipment |
| CN116660671A (en) * | 2023-07-28 | 2023-08-29 | 北京芯可鉴科技有限公司 | Broadband transient interference measurement influence factor verification method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966624A (en) * | 2017-11-21 | 2018-04-27 | 广电计量检测（西安）有限公司 | A kind of simulating, verifying test device 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 |
| CN113740618A (en) * | 2021-08-06 | 2021-12-03 | 中国电力科学研究院有限公司 | Comprehensive environment simulation device for testing board card level equipment |
| CN116660671A (en) * | 2023-07-28 | 2023-08-29 | 北京芯可鉴科技有限公司 | Broadband transient interference measurement influence factor verification method and device |
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Application publication date: 20180529 |