CN203397730U - Audio/video data power network cable - Google Patents
Audio/video data power network cable Download PDFInfo
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- CN203397730U CN203397730U CN201320469346.7U CN201320469346U CN203397730U CN 203397730 U CN203397730 U CN 203397730U CN 201320469346 U CN201320469346 U CN 201320469346U CN 203397730 U CN203397730 U CN 203397730U
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Abstract
The utility model aims to provide an audio/video data power network cable which can simultaneously transmit audios, videos, data, control signals, electric power and the like at the transmission distance of from 400m to 2000m with good transmission quality in the wire transmission network system. The audio/video data power network cable comprises a cable core wire and a power wire; a connection band (7) is connected between the cable core wire and the power line; the cable core wire comprises pair twist group cable cores (1), rip cords (2) and a pair twist cable core sheath (3); the power wire comprises power wire inner conductors (4), conductor insulating layers (5) and a power wire sheath (6); the pair twist cable core sheath (3) is sleeved at the periphery of the pair twist group cable cores (1) and the rip cords (2); the conductor insulating layers (5) are sleeved at the peripheries of the power wire inner conductors (4); and the power wire sheath (6) is sleeved at the periphery of the conductor insulating layers (5). The audio/video data power network cable can be applied to the field of transmission lines.
Description
Technical field
The utility model relates to a kind of cable, and 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 represents inner wire, and 2 is polyethylene insulation body, and 3 is 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 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 signal overall magnitude is decayed, and each frequency component attenuation differs greatly, particularly color part attenuation is maximum.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, 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 and increase the definition that the measure of the video amplifier improves 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 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 lower grade of strick precaution, select no matter 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, video signal transmission distance surpasses 400m and is less than in the distance of 2km, 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 optical fiber cable as the transmission line of vision signal according to the importance in security protection region.
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 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, at self-powered situation lower conductor, easily generate heat and produce oxidation, while invading if any moisture, will accelerate oxidation, therefore, adopt self-powered situation fewer, it is network power supply that many employings increase supply line's mode.
If when power supply is alternating current, conductor is easily oxidized; Alternating current is also easily scurried in highfrequency transmission systems, causes display screen to occur " snowflake " or rolling striped, 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 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 engineering cost, transmission quality, cable laying operation, the reasons such as maintenance that continue, activity network transmission link exists the situation of " selecting difficulty " or " out of stock ";
The 2nd, need to lay separately supply line, increase network purchase cost, cable laying operation cost, maintain and repair methods cost, has 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.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of in wire transmission network system, transmission range 400 to 2000m, 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 scheme that the utility model adopts is: the utility model comprises core and power line, between described core and described power line, pass through a related connection, 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 be socketed in described pair twist group cable core and described in tear rope periphery, it is peripheral that described insulating layer of conductor is socketed in described power line inner wire, and it is peripheral that described power line sheath is socketed in described insulating layer of conductor.
Described pair twist group cable core consists of by the back twist of look order is stranded several pair twist groups, described in each pair twist group by two insulated single wires by insulation look order stranded forming.
Described in several, pair twist group comprises video transmission line, audio transmission line, data line, control signal transmission line and siding.
The twisting pitch inequality of pair twist group described in several, 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 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 with described in tear rope be 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 cable insulation grade PVC and forms outward, and the insulating barrier color of two power line inner wires is different.
Described pair twist group cable core sheath, described power line sheath and a described related extrusion molding are integrated.
The beneficial effects of the utility model are: because the utility model comprises core and power line, between described core and described power line, pass through a related connection, described core comprises pair twist group cable core, tear 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 be socketed in described pair twist group cable core and described in tear rope periphery, it is peripheral that described insulating layer of conductor is socketed in described power line inner wire, it is peripheral that described power line sheath is socketed in described insulating layer of conductor, so, the utility model 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, between each pair twist group, can not produce interference, power line is realized the transmission of electric energy, this cable can be applied to 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 having other networks of similar instructions for use or the transmission link between instrument facility, compare with existing cable, the non-relay device signal transmission distance of unit cable of the present utility model is longer than the non-relay device signal transmission distance of SYV-75-5 cable, good product quality, price is low, product cable laying operation, maintenance, continue conveniently, the construction of cable is reasonable, shielding properties is excellent, good stability, reliability is high, moisture resistance is good, long service life.
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 utility model.
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 be socketed in described pair twist group cable core 1 and described in tear rope 2 periphery, 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, described in each pair twist group by two insulated single wires 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 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 with described in tear rope 2 and be set in parallel in described pair twist group cable core sheath 3.The number of described power line inner wire 4 is two, and described insulating layer of conductor 5 is extruded in inner wire by cable insulation grade PVC and forms outward, and the insulating barrier color of two power line inner wires is different.Described pair twist group cable core sheath 3, described power line sheath 6 and described related 7 extrusion moldings are integrated.
The utility model has mainly been 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 insulated single wires by insulation look order stranded forming, and every insulated single wire extrudes 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 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 reaching the requirement of the dimensional discrepancy scope of fine copper round conductor, in controlling COPPER WIRES PRODUCTION process, should use diamond mould or rhinestone mould 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 process stipulation requirement.Produce insulated single wire and with plastic insulation extruder production line, should be equipped with that insulation diameter is measured automatically, automatic control equipment; Accurate control tensioner also should be equipped with, to meet technological requirement.
In the production process of pair twist group cable core, should strictly control the uniformity consistency of two single line laying tensions of pair twist group, adjacent lines is to pitch inequality, twisting pitch is controlled and is advisable for being generally 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 technological requirement regulation, and guarantees that pitch variation scope meets process stipulation requirement.
The cable core being formed by 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.In cable core stranding process, should guarantee that each pair twist group laying tension uniformity consistency and cable core takeup tension are moderate steadily.
As shown in Figure 2, described in, tearing rope 2 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 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, at sheathing machine production line, adopt an extrusion molding of custom-designed jacket extrusion mould, 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 described in the utility model 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 completely, 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 utility model can be applicable to 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) be socketed in described pair twist group cable core (1) and described in tear the periphery of 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, 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, described in each pair twist group by two insulated single wires by insulation look order stranded forming.
3. audio, video data electric power network cable according to claim 2, is characterized in that: described in several, pair twist group comprises 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, is characterized in that: the twisting pitch inequality of pair twist group described in several, 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, 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, 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 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) with described in tear rope (2) and be set in parallel in described pair twist group cable core sheath (3).
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 cable insulation grade PVC and forms outward, and the insulating barrier color of two power line inner wires is different.
10. according to the audio, video data electric power network cable described in claim 1 to 9 any one, 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 |
|---|---|---|---|
| CN201320469346.7U CN203397730U (en) | 2013-08-02 | 2013-08-02 | Audio/video data power network cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469346.7U CN203397730U (en) | 2013-08-02 | 2013-08-02 | Audio/video data power network cable |
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| Publication Number | Publication Date |
|---|---|
| CN203397730U true CN203397730U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320469346.7U Expired - Fee Related CN203397730U (en) | 2013-08-02 | 2013-08-02 | Audio/video data power network cable |
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| Country | Link |
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| CN (1) | CN203397730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440908A (en) * | 2013-08-02 | 2013-12-11 | 珠海宇讯同轴电缆有限公司 | Audio and video data power supply network cable |
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2013
- 2013-08-02 CN CN201320469346.7U patent/CN203397730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440908A (en) * | 2013-08-02 | 2013-12-11 | 珠海宇讯同轴电缆有限公司 | Audio and video data power supply network cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20200802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |