CN100488222C - Ground resistant loop interference system - Google Patents
Ground resistant loop interference system Download PDFInfo
- Publication number
- CN100488222C CN100488222C CNB031375421A CN03137542A CN100488222C CN 100488222 C CN100488222 C CN 100488222C CN B031375421 A CNB031375421 A CN B031375421A CN 03137542 A CN03137542 A CN 03137542A CN 100488222 C CN100488222 C CN 100488222C
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- communication equipment
- connector
- electric capacity
- ground
- interference system
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Abstract
A system able to resist the grounding loop interface is composed of the grounded first and second communication equipments, the first and the second connectors, and cable connected between said two connectors. It features that the first connector is connected via the first capacitor to the first communication equipment and the second connector is connected via the second capacitor to the second communication equipment.
Description
Invention field
The present invention relates to electromagnetic interference treatment technology in the communication technology, refer to a kind of ground resistant loop interference system especially.
Technical background
Along with the continuous development of work and rest technology and application widely, all have electromagnetic field in a lot of places, and this electromagnetic field will make the communication equipment that is placed in one be affected.Such as when two communication equipment distances far couple together with coaxial cable,, influence the normal operation of communication equipment because the existence of this electromagnetic field will form the ground loop and disturb.
Described ground loop disturbs, concrete forming process is as follows: please refer to Fig. 1, one communication system, it comprises communication equipment A, communication equipment B, connector C, connector D, described communication equipment A and communication equipment B distinguish ground connection, and the communication of the two is to realize by the coaxial cable that two ends are connected on connector C and the connector D.When the distance between communication equipment A and communication equipment B is far away, on the one hand because described two different voltage differences that are formed with of the on-site earth potential of equipment; On the other hand because there is electromagnetic interference in equipment on every side, so just constituted a loop, i.e. described ground loop at the earth and communication system.
When local loop forms, just have the ground loop and disturb generation, its avatar is: the random electric current of frequency change, this electric current can make telecommunication apparatus produce error code and noise at communication process, even communication system can not normally be moved.
For avoiding the generation of above-mentioned ground loop, prior art often adopts following two kinds of technical schemes to solve:
First kind: behind the equipment installation and operation, carry out the EMC test,, then take emergency plan temporarily if find to have the ground loop.Obviously, above-mentionedly ignore in the practical application very possible ground this fact of loop that produces, find to produce the way one side that just solves behind the ground loop can not be fundamentally
Deal with problems, on the other hand because solve afterwards, so also lose time, lower efficiency.
Second kind: on veneer, control, that is: in practice, do not produce if there is the ground loop to disturb, then toggle switch ground connection with toggle switch; If have, then the toggle switch action is disturbed the ground loop and is disconnected.Though this scheme has solved the problem of ground loop to a certain extent, still has following shortcoming:
Because will be connected with toggle switch by long earth connection, and there is inductance in earth connection itself, it is high impedance under high frequency, so there is the risk of not passing through in the EMC test;
May electric current present will cause toggle switch to lose efficacy on the earth connection, and then cause the toggle switch decreased performance, even damage in actual applications.
Summary of the invention
The invention provides a kind of ground resistant loop interference system, can not solve the problem that produces ground loop interference because of the formation of ground loop well to solve prior art.
For addressing the above problem, the invention provides a kind of ground resistant loop interference system, it comprises: first communication equipment, second communication equipment, first connector, second connector, cable, described first communication equipment and second communication equipment is ground connection all, wherein, first communication equipment links to each other with first connector, second communication equipment links to each other with second connector, be connected the cable that first connector and the other end are connected second connector by an end, just first communication equipment and second communication equipment can be coupled together, be the generation of avoiding the ground loop to disturb, between first communication equipment and first connector, be connected with one first electric capacity at least, between the second communication equipment and second connector, be connected with one second electric capacity at least.
Described first electric capacity is the identical electric capacity of structure with second electric capacity.
Described first electric capacity that is connected between first communication equipment and first connector is one.
Described second electric capacity that is connected between the second communication equipment and second connector is one.
Described first electric capacity and second electric capacity all are made of capacitance body and the capacitance electrode that is arranged on the capacitance body two ends.
Described capacitance electrode is made of the conductive rubber body.
The internal diameter of the conductive rubber body of described capacitance body one end is bigger than the conductive rubber body internal diameter of the capacitance body and the described capacitance body other end, and then in the inner hierarchic structure that forms of electric capacity.
After adopting technique scheme, the present invention has following advantage:
Since communication equipment in parallel with the connector two ends electric capacity, make itself to have formed loop between communication equipment, connector, electric capacity and ground, thereby the ground loop isolated, avoided the generation of ground loop interference;
Because the generation that can avoid the ground loop to disturb, so when communication equipment being carried out EMC (electromagnetic compatibility) test, can reduce test and disturb;
The conductive rubber body can be made capacitance electrode on the one hand, on the other hand owing to the rubber bodies high resilience, so also can play buffer protection function in installation process.
Description of drawings
Fig. 1 be in the prior art loop disturb to produce system diagram;
Fig. 2 is the system block diagram of ground resistant loop interference system of the present invention;
Fig. 3 is the stereogram of electric capacity in the ground resistant loop interference system of the present invention;
Fig. 4 is the profile of electric capacity in the ground resistant loop interference system of the present invention.
Embodiment
Please refer to Fig. 2, the ground resistant loop interference system of the present invention's arch comprises all ground connection of first communication equipment 10, second communication equipment 20, first connector 30, second connector 40, cable 50, described first communication equipment 10 and second communication equipment 20, wherein, first communication equipment 10 links to each other with first connector 30, second communication equipment 20 links to each other with second connector 40, be connected the cable 50 that first connector, 30 other ends are connected second connector 40 by an end, just first communication equipment 10 can be coupled together with second communication equipment 20.
Be connected with one first electric capacity 60 at first communication equipment 10 and 30 of first connectors, be connected with one second electric capacity 70 at second communication equipment 20 and 40 of second connectors.Described first electric capacity 60 is the identical electric capacity of structure with second electric capacity 70, and it comprises capacitance body 602 and be arranged on the capacitance electrode 601 at capacitance body 602 two ends that wherein capacitance electrode 601 is to be made of as glue conduction.The internal diameter of one of capacitance body 602 two ends rubber bodies end is bigger as the internal diameter of colloid than the capacitance body 602 and the other end, and then in the inner hierarchic structure that forms of electric capacity.
Certainly, in actual applications, can be as required be connected first electric capacity 60 more than two or two with 30 of first connectors at first communication equipment 10; Be connected second electric capacity 70 more than two or two with 40 of second connectors at second communication equipment 20.
After adopting technique scheme, the present invention has following advantage:
Owing to be connected an electric capacity with the connector two ends, make itself to have formed loop between communication equipment, connector, electric capacity and ground, thereby the ground loop is isolated, the generation of having avoided the ground loop to disturb at communication equipment;
Because the generation that can avoid the ground loop to disturb, so when communication equipment being carried out EMC (electromagnetic compatibility) test, can reduce test and disturb;
The conductive rubber body can be made capacitance electrode on the one hand, on the other hand owing to the rubber bodies high resilience, so also can play buffer protection function in installation process.
Claims (7)
1, a kind of ground resistant loop interference system, it comprises: first communication equipment, second communication equipment, first connector, second connector, cable, described first communication equipment and second communication equipment is ground connection all, wherein, first communication equipment links to each other with first connector, second communication equipment links to each other with second connector, be connected the cable that first connector and the other end are connected second connector by an end, just first communication equipment and second communication equipment can be coupled together, it is characterized in that: between first communication equipment and first connector, be connected with one first electric capacity at least, between the second communication equipment and second connector, be connected with one second electric capacity at least.
2, ground resistant loop interference system as claimed in claim 1 is characterized in that: described first electric capacity is the identical electric capacity of structure with second electric capacity.
3, ground resistant loop interference system as claimed in claim 1 is characterized in that: described first electric capacity that is connected between first communication equipment and first connector is one.
4, ground resistant loop interference system as claimed in claim 1 is characterized in that: described second electric capacity that is connected between the second communication equipment and second connector is one.
5, as claim 1,2,3 or 4 described ground resistant loop interference systems, it is characterized in that: described first electric capacity and second electric capacity all are made of capacitance body and the capacitance electrode that is arranged on the capacitance body two ends.
6, ground resistant loop interference system as claimed in claim 5 is characterized in that: described capacitance electrode is made of the conductive rubber body.
7, ground resistant loop interference system as claimed in claim 6, it is characterized in that: the internal diameter of the conductive rubber body of described capacitance body one end is bigger than the internal diameter of the conductive rubber body of the capacitance body and the described capacitance body other end, and then in the inner hierarchic structure that forms of electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031375421A CN100488222C (en) | 2003-01-29 | 2003-06-08 | Ground resistant loop interference system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03103089 | 2003-01-29 | ||
| CN03103089.0 | 2003-01-29 | ||
| CNB031375421A CN100488222C (en) | 2003-01-29 | 2003-06-08 | Ground resistant loop interference system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1518327A CN1518327A (en) | 2004-08-04 |
| CN100488222C true CN100488222C (en) | 2009-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031375421A Expired - Fee Related CN100488222C (en) | 2003-01-29 | 2003-06-08 | Ground resistant loop interference system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100488222C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825771A (en) * | 2012-11-16 | 2014-05-28 | 华为技术有限公司 | Detection method and quasi-synchronization digital hierarchy apparatus |
-
2003
- 2003-06-08 CN CNB031375421A patent/CN100488222C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 某导弹故障诊断系统抗地线干扰设计与实现. 张伟，胡昌华，郑恩让.华北工学院测试技术学报，第16卷第1期. 2002 |
| 某导弹故障诊断系统抗地线干扰设计与实现. 张伟，胡昌华，郑恩让.华北工学院测试技术学报，第16卷第1期. 2002 * |
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| Publication number | Publication date |
|---|---|
| CN1518327A (en) | 2004-08-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20150608 |
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| EXPY | Termination of patent right or utility model |