CN105116262B - Cable shield tests system and test method - Google Patents
Cable shield tests system and test method Download PDFInfo
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- CN105116262B CN105116262B CN201510593092.3A CN201510593092A CN105116262B CN 105116262 B CN105116262 B CN 105116262B CN 201510593092 A CN201510593092 A CN 201510593092A CN 105116262 B CN105116262 B CN 105116262B
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Abstract
The invention discloses cable shield test system and test methods, including test casing, signal generator and signal receiver, described test casing one end sets the first sealed tube, the test casing other end sets the second sealed tube, and first sealed tube and the second sealed tube are fixedly connected with test casing.The tested cable of the present invention is connect by test lead with the first sealed tube and the second sealed tube, by the first sealed tube, the second sealed tube and sleeve is tested into the space of closing, prevent the interference of extraneous electromagnetic signals, tested cable is tested by signal generator and signal receiver again, measuring accuracy is high, repeatable detection, test method is simple and practicable, has high precision and high duplication.
Description
Technical field
The present invention relates to wireline test field, more particularly, it relates to a kind of cable shield test system and survey
Method for testing.
Background technology
At present, with the extensive use of various electric appliances and electronic equipment, electromagnetic pollution increasingly sharpens, in order to reduce this electricity
Electromagnetic pollution, in entire electronic system, all unit blocks especially connecting cable and connector should take shielding measure, existing
Test method be a kind of test method using transfger impedance, but test method test is difficult, is not easy to perform, and
It needs just obtain a result by largely calculating, the data for repeating experiment are different, therefore measuring accuracy and repeatability is not high.
Invention content
It is existing above-mentioned it is an object of the invention to solve the problems, such as, provide a kind of cable shield test system and test side
Method.
In order to achieve the above object, the technical scheme is that a kind of cable shield tests system, including test casing, letter
Number generator and signal receiver, described test casing one end set the first sealed tube, and the test casing other end is set
The second sealed tube is put, first sealed tube and the second sealed tube are fixedly connected with test casing, the described first closing
Test lead is respectively provided on pipe and the second sealed tube, the test lead of first sealed tube is connect with signal generator, institute
The test lead of the second sealed tube stated is connect with signal receiver.Tested cable passes through test lead and the first sealed tube and the
Two sealed tubes connect, and by the first sealed tube, the second sealed tube and test sleeve into the space of closing, prevent external electromagnetic from believing
Number interference, then tested cable is tested by signal generator and signal receiver, measuring accuracy is high, repeats inspection
It surveys.
Optionally, the first test of setting inner tube, the described first test inner tube and the first envelope on first sealed tube
Stopped pipe is fixedly connected, and the described first test inner tube is set in outside test lead.Test inner tube is set in outside test lead,
The closure of Cable Testing System is considerably increased, makes test effect more preferable, precision higher.
Optionally, the second test of setting inner tube, the described second test inner tube and the second envelope on second sealed tube
Stopped pipe is fixedly connected, and the described second test inner tube is set in outside test lead.Test inner tube is set in outside test lead,
The closure of Cable Testing System is considerably increased, makes test effect more preferable, precision higher.
Optionally, the diameter of the test casing is more than the diameter of the first test inner tube and the second test inner tube.
Optionally, the test lead is led in test sleeve end setting cable connector, the cable connector with test
Line is fixedly connected.Cable connector is conveniently tested cable and is connect with test lead, and can be with detection cable connector and tested cable
Shielding properties.
Optionally, housing, the screen are set between the test lead and cable connector on second sealed tube
It covers set one end to be fixedly connected with cable connector, the housing other end is fixedly connected with test lead.Housing is equally
Shielding action is played, prevents the interference of external electromagnetic signal, makes test result inaccurate.
Optionally, the test system further includes intermodulation testing instrument, and the signal generator and signal receiver are equal
It is connect with intermodulation testing instrument.Intermodulation testing instrument is used for the data of tracer signal generator and signal receiver.
A kind of test method using above-mentioned cable shield test system, it is characterized in that, include the following steps：
81）One section of tested cable that certain time is waved in application environment is intercepted, and the both ends of tested cable are installed
Cable connector；
82）Tested cable is fixed on by cable connector on sealed tube, is inserted into after what is said or talked about in test casing；
83）Intermodulation testing instrument, signal generator and signal receiver are opened, signal generator sends out signal, and signal passes through
Tested cable receives signal, the shielding attenuation data of the tested cable of intermodulation testing instrument record by signal receiver；
84）Test shielding attenuation data after tested cable is waved is compared with the data before waving.
One end of tested cable or tested cable connector is connect with test lead, and on sealed tube, is inserted into and is surveyed
Try in casing, by the high-frequency signal that signal generator generates by tested cable or tested cable connector, be tested cable or by
The other end for surveying cable connector is connect by test lead with signal receiver, is tested cable connector, test lead and closing
Casing composition built-in system is tested, the outer conductor and test casing for being tested cable form external system, from being tested in built-in system
Cable is coupled to the higher frequency signal energy of the external system transmitted in both directions between inner and outer system, is reflected at the open circuit of proximal end, this
The logarithm of voltage that sample is measured in the superposed signal that distally can be obtained by two different directions electromagnetic waves, input voltage with distal end
Ratio is shielding attenuation index.
The invention has the advantages that：Tested cable is connected by test lead and the first sealed tube and the second sealed tube
It connects, by the first sealed tube, the second sealed tube and test sleeve into the space of closing, prevents the interference of extraneous electromagnetic signals,
Tested cable is tested by signal generator and signal receiver again, measuring accuracy is high, repeats detection, test method
It is simple and practicable, there is high precision and high duplication.
Description of the drawings
Fig. 1 is a kind of structure diagram of cable shield test system.
1st, casing is tested, 2 signal generators, 3, signal receiver, 4, intermodulation testing instrument, the 5, first test inner tube, 6, survey
Try conducting wire, the 7, first sealed tube, 8, cable connector, 9, housing, the 10, second sealed tube, the 11, second test inner tube.
Specific embodiment
With reference to specific embodiment, and with reference to attached drawing, technical scheme of the present invention is further described：
Embodiment：Cable shield tests system（See attached drawing 1）, received including test casing 1, signal generator 2 and signal
Device 3, described 1 one end of test casing set the first sealed tube 7, and 1 other end of test casing sets the second sealed tube 10,
First sealed tube 7 and the second sealed tube 10 are fixedly connected with test casing 1, first sealed tube 7 and second
Test lead 6 is respectively provided on sealed tube 10, the test lead 6 of first sealed tube 7 is connect with signal generator 2, described
The test lead 6 of the second sealed tube 10 connect with signal receiver 3, set on first sealed tube 7 in first test
Pipe 5, the described first test inner tube 5 are fixedly connected with the first sealed tube 7, and the described first test inner tube 5 is set in test and leads
Second test inner tube 11 is set outside line 6, on second sealed tube 10, and the described second test inner tube 11 and second is closed
Pipe 10 is fixedly connected, and the described second test inner tube 11 is set in outside test lead 6, and the diameter of the test casing 1 is big
The diameter of inner tube 11 is tested in the first test inner tube 7 and second, the test lead 6 connects in 1 end of test casing setting cable
First 8, the cable connector 8 is fixedly connected with test lead 6, test lead 6 and cable on second sealed tube 10
Housing 9 is set between connector 8, and described 9 one end of housing is fixedly connected with cable connector 8,9 other end of housing
It is fixedly connected with test lead 6, the test system further includes intermodulation testing instrument 4, and the signal generator 2 and signal connect
Device 3 is received to connect with intermodulation testing instrument 4.
Tested cable is connect by test lead with the first sealed tube and the second sealed tube, passes through the first sealed tube, second
Sealed tube and test sleeve prevent the interference of extraneous electromagnetic signals, then pass through signal generator and signal into the space of closing
Receiver tests tested cable, and measuring accuracy is high, repeats detection, and test inner tube is set in outside test lead, greatly
The big closure for increasing Cable Testing System, makes test effect more preferable, precision higher, and cable connector is conveniently tested cable with surveying
Conducting wire connection is tried, and can shielding action equally be also functioned to detection cable connector and tested cable shield performance, housing, is prevented
The only interference of external electromagnetic signal makes test result inaccurate, and intermodulation testing instrument receives for tracer signal generator and signal
The data of device.
Using the test method of above-mentioned cable shield test system, include the following steps：
81）One section of tested cable that certain time is waved in application environment is intercepted, and the both ends of tested cable are installed
Cable connector；
82）Tested cable is fixed on by cable connector on sealed tube, is inserted into after what is said or talked about in test casing；
83）Intermodulation testing instrument, signal generator and signal receiver are opened, signal generator sends out signal, and signal passes through
Tested cable receives signal, the shielding attenuation data of the tested cable of intermodulation testing instrument record by signal receiver；
84）Test shielding attenuation data after tested cable is waved is compared with the data before waving.
One end of tested cable or tested cable connector is connect with test lead, and on sealed tube, is inserted into and is surveyed
Try in casing, by the high-frequency signal that signal generator generates by tested cable or tested cable connector, be tested cable or by
The other end for surveying cable connector is connect by test lead with signal receiver, is tested cable connector, test lead and closing
Casing composition built-in system is tested, the outer conductor and test casing for being tested cable form external system, from being tested in built-in system
Cable is coupled to the higher frequency signal energy of the external system transmitted in both directions between inner and outer system, is reflected at the open circuit of proximal end, this
The logarithm of voltage that sample is measured in the superposed signal that distally can be obtained by two different directions electromagnetic waves, input voltage with distal end
Ratio is shielding attenuation index.
Above-mentioned specific embodiment is used for illustrating the present invention rather than limiting the invention, the present invention's
In spirit and scope of the claims, to any modifications and changes that the present invention makes, the protection model of the present invention is both fallen within
It encloses.
Claims (6)
1. a kind of cable shield tests system, it is characterized in that, it is described including test casing, signal generator and signal receiver
Test casing one end set the first sealed tube, the test casing other end set the second sealed tube, first envelope
Stopped pipe and the second sealed tube are fixedly connected with test casing, and test is respectively provided on first sealed tube and the second sealed tube
Conducting wire, the test lead of first sealed tube are connect with signal generator, the test lead of second sealed tube with
Signal receiver connects；The test lead is led in test sleeve end setting cable connector, the cable connector with test
Line is fixedly connected；Housing, the housing are set between the test lead and cable connector on second sealed tube
One end is fixedly connected with cable connector, and the housing other end is fixedly connected with test lead.
2. cable shield according to claim 1 tests system, it is characterized in that, set first on first sealed tube
Inner tube is tested, the described first test inner tube is fixedly connected with the first sealed tube, and the described first test inner tube is set in test
Outside conducting wire.
3. cable shield according to claim 2 tests system, it is characterized in that, set second on second sealed tube
Inner tube is tested, the described second test inner tube is fixedly connected with the second sealed tube, and the described second test inner tube is set in test
Outside conducting wire.
4. cable shield according to claim 3 tests system, it is characterized in that, the diameter of the test casing is more than the
The diameter of one test inner tube and the second test inner tube.
5. system is tested according to claim 1-4 any one of them cable shield, it is characterized in that, the test system is also wrapped
Intermodulation testing instrument is included, the signal generator and signal receiver are connect with intermodulation testing instrument.
6. a kind of test method of cable shield test system using described in claim 5, it is characterized in that, including following step
Suddenly：
81) one section of tested cable that certain time is waved in application environment is intercepted, and cable is installed at the both ends of tested cable
Connector；
82) tested cable is fixed on by cable connector on sealed tube, be inserted into test casing；
83) intermodulation testing instrument, signal generator and signal receiver are opened, signal generator sends out signal, and signal is by tested
Cable receives signal, the shielding attenuation data of the tested cable of intermodulation testing instrument record by signal receiver；
84) the test shielding attenuation data after tested cable is waved is compared with the data before waving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593092.3A CN105116262B (en) | 2015-09-17 | 2015-09-17 | Cable shield tests system and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593092.3A CN105116262B (en) | 2015-09-17 | 2015-09-17 | Cable shield tests system and test method |
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| CN105116262A CN105116262A (en) | 2015-12-02 |
| CN105116262B true CN105116262B (en) | 2018-06-12 |
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| CN201510593092.3A Active CN105116262B (en) | 2015-09-17 | 2015-09-17 | Cable shield tests system and test method |
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Families Citing this family (5)
| 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 |
| CN107966618B (en) * | 2017-11-28 | 2020-08-28 | 广州广电计量检测股份有限公司 | Data line shielding effectiveness detection circuit and method |
| CN110456166B (en) * | 2019-08-22 | 2021-08-24 | 北京大泽科技有限公司 | Method for measuring inhibition characteristic of inhibition network |
| CN110888009A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Device and method for monitoring integrity of wire harness shielding layer |
| CN113552422A (en) * | 2021-07-30 | 2021-10-26 | 上海华碧检测技术有限公司 | High-frequency enhanced three-coaxial-method shielding effectiveness test system and test method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4931720A (en) * | 1988-05-18 | 1990-06-05 | Asea Brown Boveri Ltd. | Arrangement for measuring transfer impedances of coaxial cables |
| EP1160932A1 (en) * | 2000-06-02 | 2001-12-05 | Institut Francais Du Petrole | Waterproof electrical connection device for electrodes by shielded cables and petrophysical measuring system |
| CN101871975A (en) * | 2010-06-21 | 2010-10-27 | 中国人民解放军理工大学 | System and method for testing cable transfer impedance time domain |
| CN203224582U (en) * | 2013-04-12 | 2013-10-02 | 上海杰智电工科技有限公司 | Cable test terminal and cable test device thereof |
| CN205067621U (en) * | 2015-09-17 | 2016-03-02 | 浙江康宇电缆有限公司 | Cable shield test system |
-
2015
- 2015-09-17 CN CN201510593092.3A patent/CN105116262B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4931720A (en) * | 1988-05-18 | 1990-06-05 | Asea Brown Boveri Ltd. | Arrangement for measuring transfer impedances of coaxial cables |
| EP1160932A1 (en) * | 2000-06-02 | 2001-12-05 | Institut Francais Du Petrole | Waterproof electrical connection device for electrodes by shielded cables and petrophysical measuring system |
| CN101871975A (en) * | 2010-06-21 | 2010-10-27 | 中国人民解放军理工大学 | System and method for testing cable transfer impedance time domain |
| CN203224582U (en) * | 2013-04-12 | 2013-10-02 | 上海杰智电工科技有限公司 | Cable test terminal and cable test device thereof |
| CN205067621U (en) * | 2015-09-17 | 2016-03-02 | 浙江康宇电缆有限公司 | Cable shield test system |
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| CN105116262A (en) | 2015-12-02 |
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