CN201804623U - Elevator cable with high SNR (signal to noise ratio) video cable unit - Google Patents
Elevator cable with high SNR (signal to noise ratio) video cable unit Download PDFInfo
- Publication number
- CN201804623U CN201804623U CN2010202827181U CN201020282718U CN201804623U CN 201804623 U CN201804623 U CN 201804623U CN 2010202827181 U CN2010202827181 U CN 2010202827181U CN 201020282718 U CN201020282718 U CN 201020282718U CN 201804623 U CN201804623 U CN 201804623U
- Authority
- CN
- China
- Prior art keywords
- cable unit
- video
- elevator
- video cable
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Insulated Conductors (AREA)
Abstract
An elevator cable with a high SNR (signal to noise ratio) video cable unit comprises an outer sheath; at least a control cable unit and the video cable unit are arranged in the outer sheath; the video cable unit comprises an inner conductor, an outer conductor, an insulating layer between the inner conductor and the outer conductor, and a video cable unit sheath wrapped on the video cable unit. The elevator cable is characterized in that the inner conductor adopts an enameled stranded wire formed by twisting a plurality of enameled single wires; each enameled single wire is formed by wrapping an insulating paint layer on a conductor wire core made of oxygen-free copper, copper alloy or single-crystal copper material; and the inner conductor and the outer conductor form an independent signal circuit. The elevator cable is very suitable to be used in places with high requirement for an elevator system, and has the advantages of clear video images, high resolution, no noise, no distortion, and synchronization of voice and images, and facilitates the improvement of the comprehensive performance of the elevator system, thereby providing a larger design space for manufacturing novel elevators.
Description
Technical field
The utility model belongs to field of cables, particularly a kind of elevator cable.This elevator cable comprises flat type elevator cable and round elevator cable.
Background technology
Supervising device is installed in elevator device, is the current way of modem elevator industry.Supervising device is registered 5 major parts by making a video recording, transmit, control, show, writing down and is formed.Video camera arrives main control system by vision cable with transmission of video images, and main control system is assigned to vision signal each monitor and video recording equipment again, the voice signal of needs transmission can be entered in the video tape recorder synchronously simultaneously.The acquisition quality of sound, image, data etc. is no doubt relevant with the quality of camera and display, also relevant with the transmission quality of stube cable with the quality that shows with memory.The common problem that existing supervising device exists has: 1. not fogging clear, details is differentiated rate variance; 2. move discontinuous smoothness; 3. sound and image are asynchronous and noise arranged; 4. playback effect is undesirable.According to analysis, when finding the problem that is hidden in cable self to elevator cable video cable unit.
Existing, the typical structure of video cable unit comprises in the elevator cable: inner wire, insulation, outer conductor (being screen), sheath.Wherein, 1. inner wire generally adopts oxygen-free copper twisted wire or copper covered steel (aluminium) twisted wire or tinning steel-in-copper (aluminium) twisted wire in the industry; 2. foaming PE or bubble skin PE insulation are adopted in insulation; 3. outer conductor (being screen) adopts single shielding or copper cash braiding+aluminium foil multilayer screen; 4. sheath adopts PVC to extrude form.
Below, we analyze the influence of each layer structure to the audio-video signal transmission quality:
One, inner wire, audio-video signal belongs to the different signal of frequency height, wherein the audio signal operating frequency is in 20～20000Hz scope, the vision signal operating frequency is in 300kHz～6MHz scope, because the relation of the frequency and the degree of depth, the CURRENT DISTRIBUTION of the two has difference everywhere on cross-sectional area of conductor, the former is more even, the latter mainly concentrates on conductive surface, therefore, conductor diameter is big more, and the transmission rate of Voice ﹠ Video signal and the difference of transport resistance are just big more, the time error of incoming terminal is just big more, and this is to cause sound and visual nonsynchronous main cause; Traditional elevator cable video cable unit adopts the twisted wire conductor, though the sub-thread conductor diameter is very little, but strand with strand between on electric, communicate, can regard one as on the effect macroscopic view of strands, so strands is not contributed improving the audio-video signal transmission quality;
Two, inner wire, adopt strands, though can regard one as on the macroscopic view, but on microcosmic, each strand and other strand conductor are not contacting of face but the contact of point, when charge carrier when one conductor arrives another strand conductor contact point, to produce jump, the obstruction of reflection or oxide on surface, at this moment, signal will produce strength retrogression and reflection loss, in addition, and the conductor of strands, not that each root from first to last all keeps the rotation of same position, from then on that position is jumped in the position, and jump to skin or jump to internal layer from internal layer from skin, so, get muddled and distort in the path of charge carrier information conduction, this will cause the monitoring display image unintelligible, details is differentiated rate variance, defectives such as noise;
Three, existing also have company by the kelvin effect rule inner wire to be designed to the copper-clad strand structure, or tinning steel-in-copper twisted wire structure, equally also run into the situation that jump and reflection take place on the interface respectively for audio signal and vision signal;
Four, outer layer body (being screen), an elevator cable often has a plurality of different electric units, each Elementary Function difference, the electric current of carrying and signal frequency are also different, because proximity effect, these unit are to extraradial electromagnetic wave, add the electromagnetic radiation of filling the air from motor spark, frequency converter, other electrical equipment and space, on the screen of video cable unit, produce the induction coupling, be superimposed on the extra interference of generation on the original electric loop of video cable, this will cause, and the monitoring display image is unintelligible, details is differentiated rate variance; Although some standard and manufacturer are in order to improve shield effectiveness, screen is set to two layers, three layers even four layers, and they still belong to same one deck on electrical principle, does not have technical outstanding contributions on the antagonism outside electromagnetic interference.
Therefore, traditional elevator cable video cable unit, it only is the structure that follows conventional coaxial cable, do not design especially at special environment for use of elevator and cable special tectonic, wish that quality monitoring improves without end on the one hand, the signal to noise ratio problem of cable can not be improved from the construction of cable and principle aspect on the other hand, and the two has constituted a pair of technical contradiction, how solving this contradiction, is the important topic that elevator industry is pursued technological progress, lifting product function and use value.
Summary of the invention
The purpose of this utility model is for solving the technical contradiction of above raising supervisory control system quality and construction of cable design itself, having designed a kind of novel elevator cable that contains high s/n ratio video cable unit especially.
For achieving the above object, the technical solution adopted in the utility model is: a kind of elevator cable that contains high s/n ratio video cable unit, comprise oversheath, and be provided with control cable unit and video cable unit in this oversheath at least; Described video cable unit comprises the insulating barrier between inner wire, outer conductor, inner wire and the outer conductor and is coated on outer video cable unit sheath; Described inner wire is the many stranded enamel-cover twisted wires that form of enamel-cover single line, and every enamel-cover single line is made of the conductor wire core outsourcing insulation enamelled coating of oxygen-free copper or copper alloy or single crystal Cu material.
In the such scheme, described outer conductor is simultaneously as first screen, this first screen periphery is coated with second insulating barrier, the periphery of second insulating barrier is coated with the secondary shielding layer, and the periphery of secondary shielding layer coats described video cable unit sheath, constitutes the double-deck individual screen structure of video cable unit with this.Be that outer conductor has concurrently and inner wire isomorphism signal circuit and the shielding inner wire electromagnetic double action of space radiation to external world, and the secondary shielding layer have the effect of the extraneous space of shielding to video cable signal circuit radiated electromagnetic wave.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage:
1. because the utility model adopts the enamel-cover twisted wire as inner wire, each strand conductor all is an independently signal unit of transfer, the thickness of each strand conductor is all very little, the Electric Field Distribution of Voice ﹠ Video signal on the cross section of each strand conductor is evenly more a lot of than conventional video line conductor, the diversity ratio conventional video line of the transmission rate of Voice ﹠ Video signal and transport resistance dwindles, the time error of incoming terminal also just reduces, and sound and visual nonsynchronous defective have obtained overcoming.
2. because the utility model adopts the enamel-cover twisted wire as inner wire, insulate between conductor and the conductor, therefore, in the signals transmission, charge carrier from top to terminal, all on same strip conductor, move, there are not jump between thigh, the reflection of no interface, oxide-free molecule obstruction, therefore, no signal strength retrogression and reflection loss, signal transmission path does not have change, and the defective of monitoring display image diffusion, resolution rate variance has also obtained overcoming.
3. because the utility model adopts double-deck individual screen structure, the electric loop that inner wire, first insulating barrier, outer conductor constitute has together been undertaken the function of signal transmission; The electromagnetic wave barrier that second insulating barrier and secondary shielding layer constitute, to come from the electromagnetic radiation of inside and outside both direction, keep apart fully with signal circuit, electric current after the noise coupling, imported the earth by the secondary shielding layer, to the no any interference of audio-video signal transmission, image diffusion, flicker, defective unintelligible, that differentiate traditional cable existence such as rate variance have obtained overcoming.
4. the very suitable occasion that elevator device is had higher requirements of the utility model is used, video image is clear, resolution is high, no noise, undistorted, sound and image synchronization help improving the combination property of elevator device, thereby provide bigger design space for the manufacturing of novel elevator.
Description of drawings
Fig. 1 is the radial section schematic diagram of the utility model embodiment one flat type elevator cable structure;
Fig. 2 is the radial section schematic diagram of video cable unit in the utility model embodiment one flat type elevator cable;
Fig. 3 is the radial section schematic diagram of the utility model embodiment two round elevator cable structures.
In the above accompanying drawing: 1, feed cable unit; 2, signal cable unit; 3, video cable unit; 4, optical cable unit; 5, network cable unit; 6, control cable unit; 7, hold the lotus unit; 8, braid; 9, oversheath; 10, inner wire; 11, first insulating barrier; 12, outer conductor (i.e. first screen); 13, second insulating barrier; 14, secondary shielding layer; 15, video cable unit sheath; 16, enamel-cover single line; 17, conductor wire core; 18, insulation enamelled coating.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1, accompanying drawing 2:
A kind of elevator cable that contains high s/n ratio video cable unit, the oversheath 9 that comprises a flat type cross section, be provided with feed cable unit 1, signal cable unit 2, video cable unit 3, optical cable unit 4, network cable unit 5, control cable unit 6 and two in the described oversheath 9 side by side and hold lotus unit 7, this two holds lotus unit 7 and is respectively in both sides in the oversheath 9.Also be covered with one deck braid 8 on described oversheath 9 inwalls.
Shown in accompanying drawing 2,3 centers, described video cable unit are inner wire 10, inner wire 10 peripheries coat first insulating barrier 11, the periphery of this first insulating barrier 11 coats outer conductor 12, this outer conductor 12 is simultaneously as first screen, and the periphery that these first screen, 12 peripheries are coated with second insulating barrier, 13, the second insulating barriers 13 is coated with secondary shielding layer 14, and the periphery of secondary shielding layer 14 coats sheath 15, constitutes the double-deck individual screen structure of video cable unit with this.
And inner wire 10 is the many enamel-cover single line 16 stranded twisted wires that form, and every enamel-cover single line 16 is made of the conductor wire core 17 outsourcings insulation enamelled coating 18 of oxygen-free copper or copper alloy or single crystal Cu material.
In the foregoing description one, the concrete structure of feed cable unit 1, signal cable unit 2, network cable unit 5, control cable unit 6 can adopt existing structure.Feed cable unit 1, signal cable unit 2, network cable unit 5 can have, and also can not have, and select by user's actual needs.
The occasion that present embodiment is fit to elevator device is had higher requirements is very much used, video image is clear, resolution is high, no noise, undistorted, sound and image synchronization help improving the combination property of elevator device, thereby provide bigger design space for the manufacturing of novel elevator.
Embodiment two: shown in accompanying drawing 3:
A kind of elevator cable that contains high s/n ratio video cable unit comprises the oversheath 9 in a round cross section, and centers are provided with optical cable unit 4 in this oversheath 9, and the peripheral ring of optical cable unit 4 is around arranging signal cable unit 2, video cable unit 3 and network cable unit 5.Arrange the feed cable unit 1 of annular in the whole periphery of signal cable unit 2, video cable unit 3 and network cable unit 5, arrange the control cable unit 6 of annular again in the periphery of feed cable unit 1,9 of the outside of control cable unit 6 and oversheaths are provided with braid 8.Be embedded with in the feed cable unit 1 in one week in a plurality of control cable unit 6 that hold 7, one weeks of lotus unit and also be embedded with a plurality of lotus unit 7 that hold.
The structure of described video cable unit 3 is with embodiment one, the center of video cable unit 3 is an inner wire 10, inner wire 10 peripheries coat first insulating barrier 11, the periphery of this first insulating barrier 11 coats outer conductor 12, this outer conductor 12 is simultaneously as first screen, and the periphery that these first screen, 12 peripheries are coated with second insulating barrier, 13, the second insulating barriers 13 is coated with secondary shielding layer 14, and the periphery of secondary shielding layer 14 coats sheath 15, constitutes the double-deck individual screen structure of video cable unit with this.
And inner wire 10 is the many enamel-cover single line 16 stranded twisted wires that form, and every enamel-cover single line 16 is made of the conductor wire core 17 outsourcings insulation enamelled coating 18 of oxygen-free copper or copper alloy or single crystal Cu material.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (2)
1. an elevator cable that contains high s/n ratio video cable unit comprises oversheath, is provided with control cable unit and video cable unit in this oversheath at least; Described video cable unit comprises the insulating barrier between inner wire, outer conductor, inner wire and the outer conductor and is coated on outer video cable unit sheath; It is characterized in that: described inner wire is the many stranded enamel-cover twisted wires that form of enamel-cover single line, and every enamel-cover single line is made of the conductor wire core outsourcing insulation enamelled coating of oxygen-free copper or copper alloy or single crystal Cu material.
2. the elevator cable that contains high s/n ratio video cable unit according to claim 1, it is characterized in that: described outer conductor is simultaneously as first screen, this first screen periphery is coated with second insulating barrier, the periphery of second insulating barrier is coated with the secondary shielding layer, and the periphery of secondary shielding layer coats described video cable unit sheath, constitutes the double-deck individual screen structure of video cable unit with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202827181U CN201804623U (en) | 2010-08-05 | 2010-08-05 | Elevator cable with high SNR (signal to noise ratio) video cable unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202827181U CN201804623U (en) | 2010-08-05 | 2010-08-05 | Elevator cable with high SNR (signal to noise ratio) video cable unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201804623U true CN201804623U (en) | 2011-04-20 |
Family
ID=43874125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202827181U Expired - Fee Related CN201804623U (en) | 2010-08-05 | 2010-08-05 | Elevator cable with high SNR (signal to noise ratio) video cable unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201804623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570227A (en) * | 2012-01-20 | 2012-07-11 | 广东佳明电器有限公司 | Integrated long-distance IDC (Internet Data Center) data line |
| CN103021537A (en) * | 2012-11-29 | 2013-04-03 | 安徽徽宁电器仪表集团有限公司 | Coaxial cable and manufacturing method thereof |
-
2010
- 2010-08-05 CN CN2010202827181U patent/CN201804623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570227A (en) * | 2012-01-20 | 2012-07-11 | 广东佳明电器有限公司 | Integrated long-distance IDC (Internet Data Center) data line |
| CN103021537A (en) * | 2012-11-29 | 2013-04-03 | 安徽徽宁电器仪表集团有限公司 | Coaxial cable and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202058479U (en) | Composite cable structure for shielding electromagnetic radiation | |
| CN102117677A (en) | High-temperature resistance light low voltage differential signaling (LVDS) data bus cable and preparation method thereof | |
| CN201804623U (en) | Elevator cable with high SNR (signal to noise ratio) video cable unit | |
| CN201359880Y (en) | High frequency data transmission cable | |
| CN101599319B (en) | Light weather-proof signal shielding cable | |
| CN203205137U (en) | Electromagnetic interference resistance, heavy current and water tightness magnetic simulation cable | |
| CN202855335U (en) | Composite cable with electric power and network transmission function | |
| CN202816421U (en) | Minitype soft super-light data transmission cable | |
| CN201465652U (en) | Signal-shielding weatherproof light cable | |
| CN103268783A (en) | High definition audio and video transmission line of mobile terminal | |
| CN204010816U (en) | High insulation shielding soft type digital cable | |
| CN203377030U (en) | Improved coaxial cable | |
| CN202720915U (en) | Anti-erosion multifunctional transmission cable | |
| CN202976963U (en) | A power transmission cable used for generic cabling | |
| CN202008848U (en) | Combination cable for transmitting signals and data | |
| CN202720945U (en) | Anti-erosion cable used for transmitting electric power and data | |
| CN203596187U (en) | Telecommunication composite cable | |
| CN103500603A (en) | Long-distance communication composite cable | |
| CN202887779U (en) | Comprehensive shielding control cable | |
| CN212570459U (en) | Double-sided compound-film type cable coated with non-shielding wrapping tape | |
| CN202948751U (en) | Power communication composite cable for ships | |
| CN202855389U (en) | Erosion-resistance cable applicable to electric power and network | |
| CN202720918U (en) | Electric power and data transmission cable | |
| CN201994092U (en) | Composite cable of power cable and network cable | |
| CN202058480U (en) | Composite cable formed by network cable and coaxial cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130805 |