CN201590272U - Outdoor exposed laying security monitoring combined cable - Google Patents
Outdoor exposed laying security monitoring combined cable Download PDFInfo
- Publication number
- CN201590272U CN201590272U CN2009202044352U CN200920204435U CN201590272U CN 201590272 U CN201590272 U CN 201590272U CN 2009202044352 U CN2009202044352 U CN 2009202044352U CN 200920204435 U CN200920204435 U CN 200920204435U CN 201590272 U CN201590272 U CN 201590272U
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- oversheath
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Abstract
The utility model relates to a monitor cable used for a closed-circuit television monitor system in an urban security system, in particular to an outdoor exposed laying security combined cable, which comprises an outer sheath and a grounding wire disposed inside the outer sheath. The grounding wire is disposed at the axle center of the outer sheath, a power cord, a CCTV radio frequency cable and a control signal wire are arranged surrounding the grounding wire at uniform angles, and the power cord, the CCTV radio frequency cable and the control signal wire are uniformly disposed by utilizing the grounding wire as an axle center of the combined wire at uniform 120-degree angles. The outdoor exposed laying security monitoring combined cable has the advantages of 1, saving cost of respectively leading multiple conducting wires to perform pipe laying, reducing engineering cost and enhancing social benefit, 2, integrally resolving mutual electromagnetic interference caused by the pluralities of conducting wires when laying, 3, preventing lightning surge intruding equipment along a transmission circuit and leading lightning induction electromagnetic wave to be directly connected into the grounding wire, and 4, increasing engineering quality of a closed-circuit monitoring system, and ensuring stable operation of the system.
Description
Technical field
The utility model relates to a kind of monitoring cable that is used for city security protection system closed-circuit TV monitoring system, refer more particularly to a kind of common ground line that utilizes, power line, CCTV radio frequency cable, control signal wire simultaneously around earth connection, are eliminated the outside and electromagnetic outdoor surface security-protection monitoring bonding wire of internal interference from cable.
Background technology
Closed-circuit TV monitoring system (cctv) is used more and more in city security protection system, because outdoor electric circumstance more complicated, form various interference sources easily, can enter closed-circuit TV monitoring system by transmission cable, cause phenomenons such as the decline of video image quality, system's Control Failure, fluctuation of service; Simultaneously, thunder and lightning also can impact: the direct lightning strike waveform is 10/350us; Conduction thunder (lightning wave intrusion) is (several kilometers even tens kilometers) in the larger context, and effects of lightning closed-circuit TV monitoring system transmission line is invaded equipment along transmission line then, to the internal unit formation earth potential counterattack of closed-circuit TV monitoring system.
Therefore, the anti-interference safeguard procedures of cctv surveillance cable are the subject matter that solves cctv surveillance outsidepiston in the security protection system.Interference source character and safeguard procedures at the cctv surveillance cable, to solve the interference problem of cctv surveillance outsidepiston in the security protection system, improve the closed monitor system project quality, guarantee that the stable operation of system is highly profitable, more than the become present industry difficult problem being badly in need of solving.
In Fig. 1, interference source (output of system A) with disturbed body (input of system B) go the same way through and during a shared ground wire, then because the output current of A flows through the common impedance of X-X section, produce voltage, the input voltage V of system B at the input of B
B=V
In+ V, V=-Ldi/dt, the impedance of the lead of common impedance is perception, and therefore high frequency in the output or high di/dt component are with easier coupling.When exporting and importing at same system, common impedance constitutes oscillating circuit.
Based on the Analysis on development of above-mentioned existing industry technology, the utility model people has developed the utility model a kind of " outdoor surface security-protection monitoring bonding wire ".
The utility model content
The utility model is at closed-circuit TV monitoring system outdoor various interference sources in city security protection system, enters the solution demand of the interference problem that closed-circuit TV monitoring system produces by transmission cable, and a kind of outdoor surface security-protection monitoring bonding wire is provided.A kind of common impedance coupling elimination electromagnetic wave principle of the inner shared ground wire of cable of utilizing is carried out structural design, the mutual signal interference and the thunder and lightning that are about to the inside and outside disturb electromagnetic wave glued together with the conduction fire retardant glue by the shield external layer of the wire harness of ground connection and line feeder and each function lead.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of outdoor surface security-protection monitoring bonding wire, comprise oversheath and be located at the interior earth connection of oversheath, its described earth connection is located at the oversheath axle center, homogeneous angular is provided with power line, CCTV radio frequency cable and control signal wire around earth connection, power line, CCTV radio frequency cable and control signal wire are pressed 120 ° of distribution equalizing structure settings with earth connection as the axle center of assemble line, eliminate from outside with the inner interference electromagnetic wave of oversheath; The inner filled conductive fire retardant glue of oversheath, the earth connection in conduction fire retardant glue and the oversheath constitutes the lightning protection path, makes the lightning protection wave interference ability/performance boost of cable, improves the overall mechanical strength of assemble line simultaneously.
The injection mo(u)lding simultaneously of described power line, CCTV radio frequency cable and control signal wire is in oversheath inside.
Be provided with the heart yearn screen between described power line, CCTV radio frequency cable, control signal wire and the oversheath.
Be provided with the conduction fire retardant glue between described power line, CCTV radio frequency cable, control signal wire and the heart yearn screen.Earth connection in conduction fire retardant glue and the cable and line feeder constitute good lightning protection path, make the lightning protection wave interference ability/performance boost of cable, improve the overall mechanical strength of cable simultaneously.
Described CCTV radio frequency cable is the SYV-75-5/3 series lines.
Described earth connection is cross section 4mm
2Single core copper cash or cross section 4mm
2One above copper plated steel silk thread.Indirect ground wire (core) is the symmetrical then stranding of the single core copper cash of the 4 squares of mm in cross section, the symmetrical cable structure is because the interchangeability of lead, better electromagnetic compatibility is arranged, play a role to suppressing the thunder and lightning interference, can offset the humorous odd frequency in that of high order, improve the anti-interference of cable, reduced the electromagnetic radiation in the whole system.
Described oversheath is the industrial grade PVC sheath of orange anti-oil.
The beneficial effect of a kind of outdoor surface security-protection monitoring bonding wire of the utility model is:
It is a kind of special cable that video, power supply, signal, control etc. are combined that collects, the cctv surveillance exterior components uses in its compact conformation, easy for installation, the suitable city security protection system, the utility model utilizes the common ground line, power line, CCTV radio frequency cable, control signal wire is centered on earth connection simultaneously, eliminates from outside with the inner interference electromagnetic wave of cable; Earth connection and line feeder in inner filled conductive fire retardant glue of cable and the cable constitute good lightning protection path, make the lightning protection wave interference ability/performance boost of cable, improve the overall mechanical strength of cable simultaneously.Have following characteristics:
1), saved that multiple lead is introduced the expense of stringing respectively, to reduce engineering cost about 50%～75%, promoted social benefit (energy-conserving and environment-protective) simultaneously;
2), the solution of Ji Zhonging the electromagnetic interference that causes mutually during multiple conductor laying;
3), reduced lightning wave and invaded equipment along transmission line, the internal unit of closed-circuit TV monitoring system is formed the earth potential counterattack, make the lightning induction electromagnetic wave directly into ground wire.
4), solved the interference problem of cctv surveillance outsidepiston in the security protection system, improve the closed monitor system project quality, guarantee the stable operation of system.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is existing conductibility common impedance coupled structure schematic diagram;
Fig. 2 is a cross section structure schematic diagram of the present utility model;
Fig. 3 is a gamma camera traditional wiring profile schematic diagram;
Fig. 4 is a gamma camera traditional wiring inner wire schematic diagram;
Fig. 5 is a gamma camera traditional wiring bottom hookup wire schematic diagram.
Description of reference numerals:
1, oversheath 2, earth connection 3, power line
4, CCTV radio frequency cable 5, control signal wire 6, heart yearn screen
7, conduction fire retardant glue
Embodiment
A kind of outdoor surface security-protection monitoring bonding wire that the technical program is provided below in conjunction with embodiment.
The utility model is to implement like this:
In Fig. 2 to Fig. 5, a kind of outdoor surface security-protection monitoring bonding wire, comprise oversheath 1 and the earth connection of being located in the oversheath 12, described earth connection 2 is located at oversheath 1 axle center, and homogeneous angular is provided with power line 3, CCTV radio frequency cable 4 and control signal wire 5 around earth connection 2; Power line 3, CCTV radio frequency cable 4 and control signal wire 5 are pressed 120 ° of distribution equalizing structure settings with earth connection 2 as the axle center of assemble line, eliminate from outside with the inner interference electromagnetic wave of cable; The fire retardant glue of the inner filled conductive of cable and the earth connection in the cable and line feeder constitute good lightning protection path, make the lightning protection wave interference ability/performance boost of cable, improve the overall mechanical strength of cable simultaneously.
In the present embodiment, power line 3, CCTV radio frequency cable 4 and control signal wire 5 injection mo(u)ldings simultaneously are in oversheath 1 inside.Be provided with heart yearn screen 6 between power line 3, CCTV radio frequency cable 4, control signal wire 5 and the oversheath 1, be provided with conduction fire retardant glue 7 between power line 3, CCTV radio frequency cable 4, control signal wire 5 and the heart yearn screen 6.CCTV radio frequency cable 4 is the SYV-75-5/3 series lines.Earth connection 2 is cross section 4mm
2Single core copper cash or cross section 4mm
2One above copper plated steel silk thread.
Described oversheath 1 is the industrial grade PVC sheath of orange anti-oil.
In Fig. 2, the outdoor surface security-protection monitoring bonding wire structure as shown in the figure with the power line in the outdoor surface security-protection monitoring bonding wire 3, CCTV radio frequency cable 4 and control signal wire 5 with the axle center of earth connection 2 as assemble line, by 120 ° of distribution equalizing structure settings (combining form of anti-electromagnetic interference), and injection mo(u)lding simultaneously is in oversheath 1 inside.
Utilize the earth connection 2 at outdoor surface security-protection monitoring bonding wire center glued together with the heart yearn screen 6 usefulness conducting resinls of power line 3, CCTV radio frequency cable 4 and control signal wire 5.
Indirect ground wire 2 (core) is the single core copper cash of the 4 squares of mm in cross section, uniform then stranding, the uniform construction of cable is because the compound lay of lead, better electromagnetic compatibility is arranged, play a role to suppressing electromagnetic interference, can offset the humorous odd frequency in that of high order, improve the anti-interference of cable, reduce the electromagnetic radiation in the whole system.
Three built-in cable group+center ground wires (the 4 squares of mm in cross section) stranded stranding of single core copper cash, stranding direction are dextrad, and pitch is 12～15 times of cable size.
When the interference source among Fig. 1 (output of system A) with disturbed body (input of system B) go the same way through and during a shared ground wire, then because the output current of A flows through the common impedance of X-X section, produce voltage, the input voltage V of system B at the input of B
B=V
In+ V, V=-Ldi/dt, the impedance of the lead of common impedance is perception, and therefore high frequency in the output or high di/dt component are with easier coupling.When exporting and importing at same system, common impedance constitutes oscillating circuit.The utility model utilizes the HW highway earth connection, designs a common ground line, and power line 3, CCTV radio frequency cable 4 and control signal wire 5 simultaneously around earth connection 2, are eliminated from outside with the inner interference electromagnetic wave of cable.
Among the outdoor monitor camera figure in Fig. 3 and Fig. 4, outdoor monitor camera adopts three kinds of traditional holding wire configuration schematic diagram, is difficult to constitute the overall structure of anti electromagnetic wave like this, and Fig. 5 is outdoor monitor camera signal wire interface structure chart.
The test result of present embodiment is as follows:
1). cable is with reference to external diameter: 12mm;
2). cable core structure: 1 * 3;
3). pair twist group mutual capacitance :≤70nF;
4). three groups of mutual capacitance :≤50nF of star;
5). alarm signal line insulation resistance: 〉=3000M Ω/km.
The above, it only is a kind of preferred embodiment of the utility model outdoor surface security-protection monitoring bonding wire, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any trickle modification, equivalent variations and modification that embodiment did.
Claims (7)
1. outdoor surface security-protection monitoring bonding wire, comprise oversheath (1) and be located at the interior earth connection (2) of oversheath (1), it is characterized in that: described earth connection (2) is located at oversheath (1) axle center, homogeneous angular is provided with power line (3), CCTV radio frequency cable (4) and control signal wire (5) around earth connection (2), power line (3), CCTV radio frequency cable (4) and control signal wire (5) are pressed 120 ° of distribution equalizing structure settings with earth connection (2) as the axle center of assemble line, eliminate from outside with the inner interference electromagnetic wave of oversheath (1); The inner filled conductive fire retardant glue of oversheath (1) (7).
2. outdoor surface security-protection monitoring bonding wire according to claim 1 is characterized in that the injection mo(u)lding simultaneously of described power line (3), CCTV radio frequency cable (4) and control signal wire (5) is in oversheath (1) inside.
3. outdoor surface security-protection monitoring bonding wire according to claim 1 and 2 is characterized in that being provided with heart yearn screen (6) between described power line (3), CCTV radio frequency cable (4), control signal wire (5) and the oversheath (1).
4. outdoor surface security-protection monitoring bonding wire according to claim 1 is characterized in that being filled with between described power line (3), CCTV radio frequency cable (4), control signal wire (5) and the heart yearn screen (6) conduction fire retardant glue (7).
5. outdoor surface security-protection monitoring bonding wire according to claim 1 is characterized in that described CCTV radio frequency cable (4) is the SYV-75-5/3 series lines.
6. outdoor surface security-protection monitoring bonding wire according to claim 1 is characterized in that described earth connection (2) is cross section 4mm
2Single core copper cash or cross section 4mm
2One above copper plated steel silk thread.
7. outdoor surface security-protection monitoring bonding wire according to claim 1 is characterized in that described oversheath (1) is the industrial grade PVC sheath of orange anti-oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202044352U CN201590272U (en) | 2009-09-01 | 2009-09-01 | Outdoor exposed laying security monitoring combined cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202044352U CN201590272U (en) | 2009-09-01 | 2009-09-01 | Outdoor exposed laying security monitoring combined cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590272U true CN201590272U (en) | 2010-09-22 |
Family
ID=42750062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202044352U Expired - Lifetime CN201590272U (en) | 2009-09-01 | 2009-09-01 | Outdoor exposed laying security monitoring combined cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590272U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111276289A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference cable with positioning partition plate |
| CN111276290A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Cable anti-interference method |
| CN111276293A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference method of round cable based on multiple shielding |
| CN111276292A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference round cable |
| CN111276288A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Internal core positioning method of anti-interference cable |
| CN114093567A (en) * | 2021-10-29 | 2022-02-25 | 江苏帝诚线缆有限公司 | Shielding control cable for signal transmission |
-
2009
- 2009-09-01 CN CN2009202044352U patent/CN201590272U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111276289A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference cable with positioning partition plate |
| CN111276290A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Cable anti-interference method |
| CN111276293A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference method of round cable based on multiple shielding |
| CN111276292A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Anti-interference round cable |
| CN111276288A (en) * | 2018-12-04 | 2020-06-12 | 湖南金缆电工科技有限责任公司 | Internal core positioning method of anti-interference cable |
| CN111276292B (en) * | 2018-12-04 | 2021-10-12 | 湖南金缆电工科技有限责任公司 | Anti-interference round cable |
| CN114093567A (en) * | 2021-10-29 | 2022-02-25 | 江苏帝诚线缆有限公司 | Shielding control cable for signal transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100922 Effective date of abandoning: 20090901 |
|
| RGAV | Abandon patent right to avoid regrant |