CN103325484B - Digital video cable suitable for unmanned plane optoelectronic system - Google Patents
Digital video cable suitable for unmanned plane optoelectronic system Download PDFInfo
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- CN103325484B CN103325484B CN201310214841.8A CN201310214841A CN103325484B CN 103325484 B CN103325484 B CN 103325484B CN 201310214841 A CN201310214841 A CN 201310214841A CN 103325484 B CN103325484 B CN 103325484B
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Abstract
The invention discloses a digital video cable suitable for an unmanned plane optoelectronic system and belongs to the field of electrical connection. The digital video cable suitable for the unmanned plane optoelectronic system comprises two connectors and a wire group and is characterized in that the length of a power source pin of each connector is smaller than those of other pins, the wire is composed of a plurality of double-twisted shielding wires and a double-twisted wire, the double-twisted shielding wires are placed in parallel to the double-twisted wire after being coated with an insulating layer, and the double-twisted shielding wires and the double-twisted wire are finally coated with a metal shielding net layer. The digital video cable suitable for the unmanned plane optoelectronic system achieves the purpose that high-frequency digital video signals and power signals are transmitted together in the optoelectronic system and has the function of hot plugging and the advantages of being simple in structure, high in safety, good in environmental suitability, capable of being used in the unmanned plane optoelectronic system and other imaging devices of the same type and the like.
Description
Technical field
The present invention relates to a kind of cable, relate generally to a kind of digital video cable, particularly relate to a kind of cable being applicable to digital video signal and power supply signal common transport in UAV electro-optical's system.
Background technology
For UAV electro-optical's system, no matter be reconnaissance version or striking type weaponry, the Real-time Collection of target area image is seemed particularly important.Along with the development of weaponry, traditional analog video signal system can not meet high-resolution imaging, the demand of high rate burst communication.Digital video can realize high-definition picture transmission, contains much information, and antijamming capability is strong, and signal processing means enriches, and just progressively becomes the important technology index of military's project demonstration.At present, multiple model project has required that electro-optical system possesses digital video signal and exports.
In numerous digital video system, Camera Link digital video adopts multidiameter delay Low Voltage Differential Signal (LVDS) transmission standard, and have disturbance little, the feature that hop rate is fast, transmission rate reaches 2.38Gbps.Camera Link digital video electric interfaces uses five pairs of low-voltage differential signal transmission vision signals, adopt driving chip group to come transmission and the reception of settling signal according to consensus standard, this family chip comprises 3 LVDS_GND chip earth signals as ground level reference signal.This digital visual interface is the primary interface form of Foreign Military electro-optical system, also extensively promotes in China commercial market.But delayed due to the restriction of abroad purchasing and domestic enterprise's development, for the research and development of the digital video cable needed for military products equipment or blank.The technical grade digital video cable extensively adopted at present, also exists following obvious shortcoming: 1. digital video signal and power supply signal can not transmit simultaneously; 2. signal environment bad adaptability, the antijamming capability of transmission is poor; 3. warm connection function is not possessed; 4. cable interface is excessive, and wire harness is thick and stiff, is unsuitable for the system integration.
Summary of the invention
The technical problem to be solved in the present invention is, for prior art Problems existing, provides a kind of cable realizing vision signal and power supply signal common transport.
For solving the problems of the technologies described above, digital video cable provided by the invention comprises two structure first, second connectors identical and wire group; Connector contains metal shell, n video stitch, m chip ground stitch, two power supply stitch, airtight rubber, two lock-screws, and n is even number and n >=2, and m depends on the quantity of electro-optical system video chip earth signal used; N video stitch is equal with m chip ground stitch lengths; Two power supply stitch be shorter in length than n video stitch; Stitch arrangement mode depends on the electric interfaces spread pattern of electro-optical system; All stitch are inserted in airtight rubber, and airtight rubber is stretched out in stitch rear and front end, and stitch rear end is concordant; Airtight rubber is assemblied in metal shell; Two lock-screws are loaded in metal shell outer wall installing hole; Described wire group comprises n/2 root twisted-pair shielded wire and a twisted-pair feeder; The parallel placement of n/2 root twisted-pair shielded wire is also with insulating barrier parcel, and twisted-pair feeder is with the parallel placement of whole bundle twisted-pair shielded wire and wrap up with metallic shield stratum reticulare; On the metal shell that in described wire group, one end of metallic shield stratum reticulare is connected to the first connector and the other end of metallic shield stratum reticulare is connected on the metal shell of the second connector; N video stitch in described n/2 root twisted-pair shielded wire on one end of n root wire and the first connector connects one to one and n video stitch on the other end of n root wire and the second connector connects one to one, screen one end of each twisted-pair shielded wire is connected with the chip ground stitch of on the first connector and the other end of screen and the chip of on the second connector a stitch be connected; In described twisted-pair feeder, one end of two wires is connected with the power supply stitch one_to_one corresponding of two on the first connector and the other end of two wires is connected with the power supply stitch one_to_one corresponding of two on the second connector.
Beneficial effect of the present invention is embodied in the following aspects:
(1) the present invention adopts connector, the wire of domestic Military Standards extensive use, with the internal shield of chip earth signal as often pair of video differential signal, with the outer shielding layer of casing earth signal cable as a whole, by the mode of interior outer shielding layer isolation processing, achieve digital video and power supply signal at the inner common transport of cable.Vision signal with chip for reference, isolate the electromagnetic interference that power supply signal brings, be conducive to the transmission of differential signal, Integral cable is shielding with casing, isolated the electromagnetic interference of Exterior cable, the isolation of ectonexine shielding simultaneously, solves the problem of signal cross-talk, transmission characteristic is good, meets the demand that military electro-optical system is inner integrated.
(2) connector of the present invention adopts the design of length stitch; stitch for transmitting power supply signal on connector is shorter than other stitch; when cable is connected with circuit; first power on signal after connection vision signal, when cable and circuit disconnect, disconnects vision signal after first power off signal; effectively circuit is protected by such signal foundation order; simplify the attended operation of system, achieve the warm connection function of cable, thus improve the fail safe of cable connection.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of digital video cable of the present invention.
Fig. 2 is the composition schematic diagram of the connector shown in Fig. 1.
Fig. 3 is the stitch arrangement schematic diagram of the connector shown in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
As shown in Figure 1, the digital video cable that preferred embodiment of the present invention provides comprises two structure first, second connector identical a and wire group b.
According to Fig. 2, connector a adopts miniaturized military micro-rectangular connector.This connector contains metal shell, n video stitch 2 ~ 6,10 ~ 14, m chip ground stitch 1,9,15, two power supply stitch 7,8, airtight rubber, two lock-screws, n is even number and n >=2, and m depends on the quantity of electro-optical system video chip earth signal used; N video stitch is equal with m chip ground stitch lengths; Two power supply stitch be shorter in length than other stitch; Stitch arrangement mode depends on the electric interfaces spread pattern of electro-optical system.In the preferred embodiment, n=10, m=3,15 stitch 1 ~ 15 are inserted in airtight rubber according to the spread pattern shown in Fig. 3, and airtight rubber is stretched out in stitch rear and front end, and stitch rear end is concordant.Airtight rubber is assemblied in metal shell, and two lock-screws are loaded in metal shell outer wall installing hole.Stitch adopts multiple twin elastic contact pin, and the length of two power supply stitch 7,8 is 2/3rds of other stitch lengths.
Wire group b comprises five twisted-pair shielded wires and a twisted-pair feeder.Twisted-pair shielded wire is used for transmission video signal, and twisted-pair feeder is for transmitting power supply signal.5 parallel placements of twisted-pair shielded wire, outer wrapping insulating barrier, twisted-pair feeder wraps up with metallic shield stratum reticulare with the parallel placement of whole bundle twisted-pair shielded wire again.Above-mentioned insulating barrier adopts polyamide fibre silk braid, has softness, wear-resisting characteristic.In five twisted-pair shielded wires the two ends of wire respectively with second on the first and second connector a to the 6th stitch 2 ~ 6, and the tenth to the 14 stitch 10 ~ 14 one_to_one corresponding welding.The screen of first and second twisted-pair shielded wires all welds with the first stitch 1 on two connectors; The screen of third and fourth twisted-pair shielded wire all welds with the nine kinds of needles pin 9 on two connectors; The screen of the 5th twisted-pair shielded wire welds with the 15 stitch 15 on two connectors.Wire in twisted-pair feeder is welded in the 7th stitch 7 on two connectors and the 8th stitch 8 respectively.Metallic shield stratum reticulare is welded on the metal shell of two connectors.
When system connects, an end of this cable is connected to digital camera, and the other end is connected to video tracker.Digital camera adopts+12V to power, output digital video signal; Video tracker provides+12V power supply, receives digital video signal and carries out image post-processed.This cable, by the mode of interior outer shielding layer isolation processing, achieves digital video signal and the common transport of power supply signal in cable inside.Because the stitch for transmitting power supply signal is shorter than the stitch of transmission video signal; power supply signal is connected after first connecting vision signal when cable connects like this; vision signal is disconnected after first disconnecting power supply signal when cable disconnects; effectively protect circuit; achieve the warm connection function of cable, simple and safe operation.
Claims (4)
1. be applicable to a digital video cable for UAV electro-optical's system, comprise two structure first, second connectors (a) identical and wire group (b); It is characterized in that: connector (a) is containing metal shell, n video stitch (2 ~ 6,10 ~ 14), m chip ground stitch (1,9,15), two power supply stitch (7,8), airtight rubber, two lock-screws, n is even number and n >=2, and m depends on the quantity of electro-optical system video chip earth signal used; N video stitch is equal with m chip ground stitch lengths; Two power supply stitch be shorter in length than n video stitch; Stitch arrangement mode depends on the electric interfaces spread pattern of electro-optical system; All stitch are inserted in airtight rubber, and airtight rubber is stretched out in stitch rear and front end, and stitch rear end is concordant; Airtight rubber is assemblied in metal shell; Two lock-screws are loaded in metal shell outer wall installing hole; Described wire group (b) comprises n/2 root twisted-pair shielded wire and a twisted-pair feeder; The parallel placement of n/2 root twisted-pair shielded wire is also with insulating barrier parcel, and twisted-pair feeder is with the parallel placement of whole bundle twisted-pair shielded wire and wrap up with metallic shield stratum reticulare; On the metal shell that one end of metallic shield stratum reticulare is connected to the first connector in described wire group (b) and the other end of metallic shield stratum reticulare is connected on the metal shell of the second connector; N video stitch in described n/2 root twisted-pair shielded wire on one end of n root wire and the first connector connects one to one and n video stitch on the other end of n root wire and the second connector connects one to one, screen one end of each twisted-pair shielded wire is connected with the chip ground stitch of on the first connector (a) and the other end of screen and the chip of on the second connector a stitch be connected; In described twisted-pair feeder, one end of two wires is connected with the power supply stitch of two on the first connector (7,8) one_to_one corresponding and the other end of two wires is connected with the power supply stitch one_to_one corresponding of two on the second connector.
2. the digital video cable being applicable to UAV electro-optical's system according to claim 1, is characterized in that: described power supply stitch (7,8) length is 2/3rds of video stitch (2 ~ 6,10 ~ 14) length.
3. the digital video cable being applicable to UAV electro-optical's system according to claim 1 and 2, is characterized in that: described connector (a) is micro-rectangular connector, wherein n=10, m=3.
4. the digital video cable being applicable to UAV electro-optical's system according to claim 3, it is characterized in that: described insulating barrier is polyamide fibre silk braid, described video stitch (2 ~ 6,10 ~ 14), chip ground stitch (1,9,15), power pin (7,8) pin all adopt multiple twin elastic contact pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214841.8A CN103325484B (en) | 2013-05-31 | 2013-05-31 | Digital video cable suitable for unmanned plane optoelectronic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214841.8A CN103325484B (en) | 2013-05-31 | 2013-05-31 | Digital video cable suitable for unmanned plane optoelectronic system |
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| Publication Number | Publication Date |
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| CN103325484A CN103325484A (en) | 2013-09-25 |
| CN103325484B true CN103325484B (en) | 2015-06-03 |
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| CN201310214841.8A Active CN103325484B (en) | 2013-05-31 | 2013-05-31 | Digital video cable suitable for unmanned plane optoelectronic system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409401A (en) * | 2016-09-02 | 2017-02-15 | 苏州新亚电通有限公司 | Super-soft wiring harness for unmanned aerial vehicle |
| CN206537519U (en) * | 2016-10-27 | 2017-10-03 | 深圳市大疆创新科技有限公司 | Unmanned plane |
| CN108257728B (en) * | 2018-01-17 | 2023-08-15 | 上海电气集团腾恩驰科技(苏州)有限公司 | Discontinuous shielding tape for data communication cable and manufacturing method thereof |
| CN112930102B (en) * | 2021-01-22 | 2022-10-14 | 西安应用光学研究所 | Flexible air-tight electromagnetic shielding device |
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| US6224424B1 (en) * | 1999-03-17 | 2001-05-01 | Gary Chen | Multi-line signal cable |
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| KR100343662B1 (en) * | 1999-07-16 | 2002-07-19 | 한국몰렉스 주식회사 | Cable assembly |
| KR20020048195A (en) * | 2000-12-16 | 2002-06-22 | 이형도 | A device for connection connector for prevention noise |
| KR20040046224A (en) * | 2002-11-26 | 2004-06-05 | 엘지전자 주식회사 | Communication cable |
| KR101066540B1 (en) * | 2008-12-30 | 2011-09-21 | 홍승구 | Wiring structure of cable for data transferring |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6224424B1 (en) * | 1999-03-17 | 2001-05-01 | Gary Chen | Multi-line signal cable |
| CN1505218A (en) * | 2002-11-20 | 2004-06-16 | 金庚中 | Connector for computer signal cable |
| CN201213160Y (en) * | 2008-06-26 | 2009-03-25 | 桂群峰 | Screen machine signal connecting line |
| CN102306890A (en) * | 2011-06-28 | 2012-01-04 | 东莞市日新传导科技股份有限公司 | High-frequency high-speed data connector |
| CN103036115A (en) * | 2011-09-29 | 2013-04-10 | 鸿富锦精密工业（深圳）有限公司 | Video graphic array (VGA) connector |
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| CN103325484A (en) | 2013-09-25 |
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