CN103440908A - Audio and video data power supply network cable - Google Patents
Audio and video data power supply network cable Download PDFInfo
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- CN103440908A CN103440908A CN2013103334669A CN201310333466A CN103440908A CN 103440908 A CN103440908 A CN 103440908A CN 2013103334669 A CN2013103334669 A CN 2013103334669A CN 201310333466 A CN201310333466 A CN 201310333466A CN 103440908 A CN103440908 A CN 103440908A
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Abstract
The invention provides an audio and video data power supply network cable. In a wire transmission network system, the transmission distance of the audio and video data power supply network cable is within a range of 400-2000m, audios, videos, data, control signals, electric energy and the like can be transmitted simultaneously in the cable, and the transmission quality of the audio and video data power supply network cable is good. The audio and video data power supply network cable comprises a cable core line and a power line, wherein the cable core line is connected with the power line through a connecting band (7); the cable core line comprises a pair twisting group cable core body (1), a tearing rope (2) and a pair twisting group cable core sheath (3); the power line comprises a power line inner conductor (4), a conductor insulating layer (5) and a power line sheath (6); the pair twisting group cable core sheath (3) is connected to the periphery of the pair twisting group cable core body (1) and the periphery of the tearing rope (2) in a sleeved mode, the conductor insulating layer (5) is connected to the periphery of the power line inner conductor (4) in a sleeved mode, and the power line sheath (6) is connected to the periphery of the conductor insulating layer (5) in a sleeved mode. The audio and video data power supply network cable can be applied to the field of transmission lines.
Description
Technical field
The present invention relates to a kind of cable, relating in particular to can transmission of audio, the audio, video data electric power network cable of video, data, control signal, electric energy.
Background technology
The communications such as vision signal in the network systems such as safety precaution network system, monitoring network system are mainly with SYV-75 type video coaxial cable or optical fiber cable with connecting line, and electric energy is supplied with and adopted power line.The basic structure schematic diagram of SYV-75 type video coaxial cable as shown in Figure 1.Wherein 1 in figure means inner wire, and 2 is the polyethylene insulation body, and 3 is the metal wire knitted outer conductor, and 4 is oversheath.When Network transmission line adopts coaxial cable, vision signal is transmitted and can be produced decay in coaxial cable, the factors such as the dielectric constant of its attenuation constant and inner wire size, insulator size, insulator and transmission frequency are relevant, when the inner wire diameter is little, insulation diameter is little, the dielectric constant of insulator is large, signal transmission frequencies is when high, attenuation constant is just large, simultaneously, signal transmission distance is longer, its pad value is also just larger, not only the signal overall magnitude is decayed, and each frequency component attenuation differs greatly, color part attenuation maximum particularly.Therefore, the transmission range of information signal is restricted.
For example, the SYV-75-5 cable of special use in safety and protection system, in this cable during transmission video signal, its transmission range is generally 400m, when if transmission range is far away, need to adopt thick, that attenuation constant is less SYV-75-7, SYV-75-9 or even the coaxial cable of SYV-75-12, the non-relay device transmission of thick coaxial cable can reach 1km, but network cost also will increase a lot.
In addition, also can adopt the measure that increases the video amplifier to improve the definition of brightness, colourity and the synchronizing signal thereof of video image, and meanwhile, the interference signal in its circuit also can be exaggerated simultaneously.Therefore, the video amplifier quantity that accesses in network loop is also the restriction that is subject to signal transmission quality.
When if video signal transmission is farther, also can adopt the optical fiber cable transmission, optical fiber cable has very little attenuation constant, service band is wide, be not subject to the interference of external electromagnetic ripple, light unit weight, and a series of outstanding advantages such as security performance is good, more than its non-relay device transmission video signal distance can reach 2km, but, because the cost price of optical fiber cable overall transfer system (the end equipment that comprises optical fiber cable) is very high, the cable laying operation of optical fiber cable, especially continue etc. and to need special equipment, and its Installation and Debugging are technical strong, difficulty is searched in fault point, in case of optical fiber damages, maintenance difficulty is large, so video signal transmission is below 2km, and when the strick precaution grade is low, select no matter the optical fiber cable transmission video signal is from project cost, or be all unfavorable from operating cost.
In sum, can find out in safety and protection system, the video signal transmission distance surpasses 400m and is less than in the distance of 2km, the Internet Transmission connecting line be chosen to an individual difficult problem, but run into such engineering, a difficult problem also will solve: or adopt thicker video coaxial cable, or adopt the video amplifier or increase again the video amplifier, or adopt the transmission line of optical fiber cable as vision signal according to the importance in security protection zone.
In addition, when adopting video coaxial cable as the transmission link of network video signal, if during the direct current that simple power supply is 12V or 24V, can adopt self-powered, utilize the video coaxial cable as supply line, but during self-powered, the internal and external conductor material of its video coaxial cable will be allowed a choice, increased line cost, simultaneously, all there is resistance in internal and external conductor, in the generation oxidation of easily generating heat of self-powered situation lower conductor, will accelerate oxidation while invading if any moisture, therefore, adopt the self-powered situation fewer, it is network power supply that many employings increase supply line's mode.
If, when power supply is alternating current, oxidation easily occurs in conductor; Alternating current is also easily scurried in highfrequency transmission systems, causes display screen " snowflake " or rolling striped to occur, and effect is watched in impact.Therefore, must increase again supply line.When increasing supply line, also increased the purchase cost of network, increased the cable laying operation cost of network, line upkeep and maintenance cost, improved networking and Internet business cost.
When adopting optical fiber cable as the transmission link of network video signal, network power supply just must increase supply line.
To the activity network transmission link in network behaviour in service and client to the expectation of Network transmission line require to summarize, inducing classification, comprehensive analysis, can find out that used Internet Transmission connecting line exists certain deficiency:
The one, the vision signal of Internet Transmission surpasses 400m in transmission range, and while being no more than 2000m, because of reasons such as engineering cost, transmission quality, cable laying operation, the maintenances that continues, there is the situation of " selecting difficulty " or " out of stock " in the activity network transmission link;
The 2nd, need to lay separately supply line, increase the network purchase cost, the cable laying operation cost, the maintain and repair methods cost, improved network construction cost and network operation cost;
The 3rd, network is high by communication connecting line cost price, and higher for being greater than 400m and being less than the relative cost of communication connecting line of 2000m.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provide a kind of in wire transmission network system, transmission range is in 400 to 2000m scopes, simultaneously transmission of audio, video, data, control signal and electric energy etc. in same cable, and the good audio, video data electric power network cable of transmission quality.
The technical solution adopted in the present invention is: the present invention includes core and power line, pass through a related connection between described core and described power line, described core comprises pair twist group cable core, tears rope and pair twist group cable core sheath, described power line comprises power line inner wire, insulating layer of conductor and power line sheath, described pair twist group cable core sheath is socketed in described pair twist group cable core and described periphery of tearing rope, described insulating layer of conductor is socketed in described power line inner wire periphery, and described power line sheath is socketed in described insulating layer of conductor periphery.
Described pair twist group cable core consists of by the back twist of look order is stranded several pair twist groups, each described pair twist group by two eradication edge single lines by insulation look order stranded forming.
Several described pair twist groups comprise video transmission line, audio transmission line, data line, control signal transmission line and siding.
The twisting pitch inequality of several described pair twist groups, the twisting pitch of each pair twist group is not more than 20mm.
The skeining direction of described pair twist group cable core is consistent with the direction of lay of each pair twist group.
The lay ratio of described pair twist group cable core is 15～20.
Every described insulated single wire extrudes the look order outward by conductor and requires cable-grade polyethylene or the polypropylene insulation layer of color to form.
Described pair twist group cable core and the described rope of tearing are set in parallel in described pair twist group cable core sheath.
The number of described power line inner wire is two, and described insulating layer of conductor is extruded in inner wire by the cable insulation grade PVC and forms outward, the insulating barrier color difference of two power line inner wires.
Described pair twist group cable core sheath, described power line sheath and a described related extrusion molding are integrated.
The invention has the beneficial effects as follows: owing to the present invention includes core and power line, pass through a related connection between described core and described power line, described core comprises pair twist group cable core, tear rope and pair twist group cable core sheath, described power line comprises the power line inner wire, insulating layer of conductor and power line sheath, described pair twist group cable core sheath is socketed in described pair twist group cable core and described periphery of tearing rope, described insulating layer of conductor is socketed in described power line inner wire periphery, described power line sheath is socketed in described insulating layer of conductor periphery, so, the present invention is connected as a single entity core and power line by related, and video transmission line is set in core, audio transmission line, data line, the pair twist groups such as control signal transmission line and siding, the twisting pitch inequality of described pair twist group, can not produce interference between each pair twist group, power line is realized the transmission of electric energy, this cable can be applied to the safety precaution network system widely, supervisory control system, LAN system, in the wire transmission network systems such as closed-circuit system, as communication connecting line transmission tone video information, data, control signal, the electric energy of rated power and rated voltage etc., also can be as other networks of similar instructions for use or the transmission link between the instrument facility are arranged, with existing cable, compare, the non-relay device signal transmission distance of unit cable of the present invention is longer than the non-relay device signal transmission distance of SYV-75-5 cable, good product quality, price is low, the product cable laying operation, maintenance, continue conveniently, the construction of cable is reasonable, the shielding properties excellence, good stability, reliability is high, moisture resistance is good, long service life.
The accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of SYV-75 type video coaxial cable;
Fig. 2 is the structural representation of audio, video data electric power network cable of the present invention.
Embodiment
As shown in Figure 2, the present embodiment discloses a kind of audio, video data electric power network cable.This system comprises core and power line, between described core and described power line, by one related 7, connect, described core comprises pair twist group cable core 1, tears rope 2 and pair twist group cable core sheath 3, described power line comprises power line inner wire 4, insulating layer of conductor 5 and power line sheath 6, described pair twist group cable core sheath 3 is socketed in described pair twist group cable core 1 and described periphery of tearing rope 2, described insulating layer of conductor 5 is socketed in described power line inner wire 4 peripheries, and described power line sheath 6 is socketed in described insulating layer of conductor 5 peripheries.
Described pair twist group cable core 1 consists of by the back twist of look order is stranded several pair twist groups, each described pair twist group by two eradication edge single lines by insulation look order stranded forming.Described pair twist group comprises video transmission line, audio transmission line, data line, control signal transmission line and siding.The twisting pitch inequality of described pair twist group, the twisting pitch of each pair twist group is not more than 20mm.The skeining direction of described pair twist group cable core 1 is consistent with the direction of lay of each pair twist group.The lay ratio of described pair twist group cable core 1 is 15～20.Every described insulated single wire extrudes the look order outward by conductor and requires cable-grade polyethylene or the polypropylene insulation layer of color to form.
Described pair twist group cable core 1 is set in parallel in described pair twist group cable core sheath 3 with the described rope 2 of tearing.The number of described power line inner wire 4 is two, and described insulating layer of conductor 5 is extruded in inner wire by the cable insulation grade PVC and forms outward, the insulating barrier color difference of two power line inner wires.Described pair twist group cable core sheath 3, described power line sheath 6 and described related 7 extrusion moldings are integrated.
The present invention has mainly applied the electromagnetic shielding theory of symmetrical cable, and coaxial cable communication and symmetrical cable communication be replacement theory mutually.
In the present embodiment, described pair twist group cable core 1 consists of by the back twist of look order is stranded four pair twist groups, each pair twist group is by two eradication edge single lines by insulation look order stranded forming, and every eradication edge single line extrudes the look order outward by pure cu conductor and requires polyethylene or the polypropylene insulation layer of look to form.
The inner wire of insulated single wire should be the fine copper round conductor, to strictly control diameter dimension deviation range and the ovality of fine copper round conductor in process of production, general deviation should be controlled in strict scope, for the requirement of the dimensional discrepancy scope that reaches the fine copper round conductor, should use diamond mould or rhinestone mould in controlling the COPPER WIRES PRODUCTION process and will be in time when reaching certain output mold exchange more; Wire drawing will reach instructions for use with lubricating fluid and change by technological requirement.
The insulation materials of insulated single wire should be cable-grade polyethylene or polypropylene insulation material, at insulated single wire, extrude in production process and will strictly control insulated single wire diameter dimension deviation, reach the process stipulation requirement.Produce insulated single wire and should be equipped with plastic insulation extruder production line that insulation diameter is measured automatically, automatic control equipment; Accurate control tensioner also should be equipped with, to meet technological requirement.
Should strictly control the uniformity consistency of two single line laying tensions of pair twist group in the production process of pair twist group cable core, adjacent lines is to the pitch inequality, twisting pitch is controlled and is advisable for generally being no more than 20mm, deviation should strictly be limited in very little scope, the pitch of each pair twist group should strictly be undertaken stranded by the technological requirement regulation, and guarantees that the pitch variation scope meets the process stipulation requirement.
The cable core formed by the pair twist group, its stranding direction should be consistent with pair twist group direction of lay, and laying up pitch should be 15 times～20 times of lay ratio.Should guarantee that in cable core stranding process each pair twist group laying tension uniformity consistency and cable core takeup tension are moderate steadily.
As shown in Figure 2, the described rope 2 of tearing should parallelly with cable core be placed in sheath; Pair twist group cable core sheath 3 can play a protective role to cable core; Power line inner wire 4 forms by pure copper round wire is stranded, and the cross sectional dimensions of inner wire should be determined by customer requirements or service condition; Insulating layer of conductor 5 should by the cable insulation grade PVC be extruded in inner wire forms outward two power line insulating barrier colors should difference; Power line sheath 6 improves the use safety of power line.Related 7 make audio-video frequency data network cable and feed cable form an integral body.Described pair twist group cable core sheath 3, power line sheath 6 and related 7 materials are cable cover(ing) grade PVC protective cover material, adopt an extrusion molding of custom-designed jacket extrusion mould at the sheathing machine production line, pair twist group cable core sheath 3 is combined as a whole by related 7 with power line sheath 6, protective cover material can adopt polyvinyl chloride flame retardant type protective cover material or polyethylene sheath material, also can adopt according to customer requirements the protective cover material of other specific (special) requirements.
Cable of the present invention is transmission of video simultaneously in same cable, audio frequency, data, the combined pioneering new product both at home and abroad of control signal and electric energy, be mainly used in safety and protection system, video monitoring system, closed-circuit system, in the network systems such as LAN system, as video camera, camera lens, monitor, the supervisory control system head-end facility such as video tape recorder are to the image of the audio-visual equipment of supervisory control system terminal, sound, the confession electrical transmission of the rated voltage rated power of data information transfer connecting line and circuit, the connecting line of control signal transmission, this " line " of applying this product just can meet user's multinomial transport network information requirement simultaneously.
This product can replace the used video coaxial line of above-mentioned network, VON voice network winding thread, data network winding thread and power line fully, can also be for other network systems or the instrument system that has similar functions to require, as the connecting line of facility, equipment room, transmission tone vision signal, control signal, data symbol and specified energy resource supply.
The present invention can be applicable to the transmission line field.
Claims (10)
1. an audio, video data electric power network cable, it is characterized in that: this cable comprises core and power line, between described core and described power line, by one related (7), connect, described core comprises pair twist group cable core (1), tear rope (2) and pair twist group cable core sheath (3), described power line comprises power line inner wire (4), insulating layer of conductor (5) and power line sheath (6), described pair twist group cable core sheath (3) is socketed in described pair twist group cable core (1) and described periphery of tearing rope (2), described insulating layer of conductor (5) is socketed in described power line inner wire (4) periphery, described power line sheath (6) is socketed in described insulating layer of conductor (5) periphery.
2. audio, video data electric power network cable according to claim 1, it is characterized in that: described pair twist group cable core (1) consists of by the back twist of look order is stranded several pair twist groups, each described pair twist group by two eradication edge single lines by stranded the forming of insulation look order.
3. audio, video data electric power network cable according to claim 2, it is characterized in that: several described pair twist groups comprise video transmission line, audio transmission line, data line, control signal transmission line and siding.
4. audio, video data electric power network cable according to claim 2, it is characterized in that: the twisting pitch inequality of several described pair twist groups, the twisting pitch of each pair twist group is not more than 20mm.
5. audio, video data electric power network cable according to claim 4, it is characterized in that: the skeining direction of described pair twist group cable core (1) is consistent with the direction of lay of each pair twist group.
6. audio, video data electric power network cable according to claim 5, it is characterized in that: the lay ratio of described pair twist group cable core (1) is 15～20.
7. audio, video data electric power network cable according to claim 2 is characterized in that: every described insulated single wire extrudes the look order outward by conductor and requires cable-grade polyethylene or the polypropylene insulation layer of color to form.
8. audio, video data electric power network cable according to claim 1 is characterized in that: described pair twist group cable core (1) is set in parallel in described pair twist group cable core sheath (3) with the described rope (2) of tearing.
9. audio, video data electric power network cable according to claim 1, it is characterized in that: the number of described power line inner wire (4) is two, described insulating layer of conductor (5) is extruded in inner wire by the cable insulation grade PVC and forms outward, the insulating barrier color difference of two power line inner wires.
10. according to the described audio, video data electric power network of claim 1 to 9 any one cable, it is characterized in that: described pair twist group cable core sheath (3), described power line sheath (6) and described related (7) extrusion moldings are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103334669A CN103440908A (en) | 2013-08-02 | 2013-08-02 | Audio and video data power supply network cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103334669A CN103440908A (en) | 2013-08-02 | 2013-08-02 | Audio and video data power supply network cable |
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| CN103440908A true CN103440908A (en) | 2013-12-11 |
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| CN2013103334669A Pending CN103440908A (en) | 2013-08-02 | 2013-08-02 | Audio and video data power supply network cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047273A (en) * | 2015-06-26 | 2015-11-11 | 佛山市粤佳信电线电缆有限公司 | Composite cable and production technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1889199A (en) * | 2006-05-30 | 2007-01-03 | 珠海宇讯同轴电缆有限公司 | Electric power coaxial cable |
| CN201435257Y (en) * | 2009-06-24 | 2010-03-31 | 珠海宇讯同轴电缆有限公司 | AV information combination cable |
| CN101714420A (en) * | 2009-10-16 | 2010-05-26 | 珠海宇讯同轴电缆有限公司 | Composite cable for network |
| CN201562469U (en) * | 2009-12-03 | 2010-08-25 | 浙江天杰实业有限公司 | Anti-interference monitoring combined cable |
| CN203397730U (en) * | 2013-08-02 | 2014-01-15 | 珠海宇讯同轴电缆有限公司 | Audio/video data power network cable |
-
2013
- 2013-08-02 CN CN2013103334669A patent/CN103440908A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889199A (en) * | 2006-05-30 | 2007-01-03 | 珠海宇讯同轴电缆有限公司 | Electric power coaxial cable |
| CN201435257Y (en) * | 2009-06-24 | 2010-03-31 | 珠海宇讯同轴电缆有限公司 | AV information combination cable |
| CN101714420A (en) * | 2009-10-16 | 2010-05-26 | 珠海宇讯同轴电缆有限公司 | Composite cable for network |
| CN201562469U (en) * | 2009-12-03 | 2010-08-25 | 浙江天杰实业有限公司 | Anti-interference monitoring combined cable |
| CN203397730U (en) * | 2013-08-02 | 2014-01-15 | 珠海宇讯同轴电缆有限公司 | Audio/video data power network cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047273A (en) * | 2015-06-26 | 2015-11-11 | 佛山市粤佳信电线电缆有限公司 | Composite cable and production technology thereof |
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Application publication date: 20131211 |