CN103856750A - Video collecting and storage method and device suitable for long-term seafloor observation - Google Patents
Video collecting and storage method and device suitable for long-term seafloor observation Download PDFInfo
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- CN103856750A CN103856750A CN201210508822.1A CN201210508822A CN103856750A CN 103856750 A CN103856750 A CN 103856750A CN 201210508822 A CN201210508822 A CN 201210508822A CN 103856750 A CN103856750 A CN 103856750A
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Abstract
The invention discloses a construction method of a seafloor camera system which is used for long-term seafloor observation and is resistant to the pressure of 10 MPa, and a data flow control method and device. An underwater part comprises an underwater camera and an underwater electronic cabin, wherein the underwater electronic cabin is connected with the inside and the outside of an underwater electronic cabin shell body through an 8-core watertight connection inserting piece I, the underwater camera is connected with an 8-core watertight connection inserting piece II through an RS232 port, the 8-core watertight connection inserting piece II is connected with an RS232 port and a 600/24V power source of a video server inside the underwater electronic cabin shell body, the video server is connected with the 8-core watertight connection inserting piece I and the 600/24V power source, and the 600/24V power source supplies power to the video server and the underwater camera. An overwater part comprises an optical switch, a 600V direct current power source and an industrial control computer. The video collecting and storage method and device suitable for long-term seafloor observation adopts a unipolar conduction method, and lowers loss of a system, and the focal length of the underwater camera can be adjusted on line.
Description
Technical field
The present invention discloses construction method, method of data flow control and the device of the seabed camera system of a kind of withstand voltage 10MPa that can be used for seabed long-term observation.
Background technology
Marine Sciences more and more come into one's own as the basis of marine exploration and development, the utilization of resources.Marine Sciences are mainly to be viewed as master.Sonar, video camera etc. that it is carrier by ship that early stage ocean is observed mainly carry out the observation of short-term.Recently, submarine observation becomes popular observation method.The advantage of submarine observation maximum is to carry out long-term continuous observation, for scientific research provides the data of continuous effective.Seabed long-term observation be unable to do without collection and the read method of camera system and video data.
Video data often capacity is larger, takies more Internet resources more, affects transmission speed, so must press to vision signal the i.e. coding of video.Video coding refers to the mode that the file of certain video format is converted to another kind of video format file.At present in video streaming of paramount importance encoding and decoding standard have International Telecommunication Association H.261, H.263, the M-JPEG of motion rest image expert group and the MPEG series standard of Motion Picture Experts Group of International Standards Organization, RealVideo, the WMV of Microsoft and the QuickTime of Apple company etc. that also have Real-Networks that are widely used on the internet in addition.After entering computer, the video of overcompression needs it catch and decode.
The video camera of submarine observation system is positioned over seabed for a long time, so the operation such as switch, focus adjustment of video camera can only regulate by online mode.
Summary of the invention
For the above-mentioned weak point of prior art, the technical problem to be solved in the present invention is to propose a kind of video acquisition, storage means and device that is applicable to seabed long-term observation, has On-line Control camera head, the functions such as hydraulic pressure are focused, tolerated to line.
The technical scheme that the present invention adopted is for achieving the above object: a kind of video acquisition, storage means and device that is applicable to seabed long-term observation,
Part comprises Underwater Camera and underwater electronic compartment under water, and underwater electronic compartment connects the inside and outside of underwater electronic compartment housing by 8 core underwater electrical connectors; Underwater Camera connects 8 core underwater electrical connector II by RS232 port, 8 core underwater electrical connector II connect RS232 port and the 600/24V power supply of the video server of underwater electronic compartment enclosure interior, video server connects 8 core underwater electrical connector I and 600/24V power supply, and 600/24V power supply is described video server and Underwater Camera power supply;
Part comprises optical switch ,-600V DC power supply and industrial computer on the water; Optical switch is connected 8 core underwater electrical connector I with-600V DC power supply by optoelectronic composite cable, and optical switch connects industrial computer by netting twine.
Described-600V DC power supply is one pole output, and the outside cathode electrode of installing of underwater electronic compartment connects 600/24V power supply, forms bipolar transmission system.
Described cathode electrode is the electrode of titanium alloy.
Described underwater electronic compartment housing outer surface has epoxy resin layer.
The length of described netting twine is less than 20 meters.
The video acquisition, the storage means that are applicable to seabed long-term observation, comprise the following steps: system starts; Whether industrial computer detects optical switch normal, if whether normally detect video server normal, if normal capturing video server handle in internal memory; Create video decode process; Obtain video process address; Create Video Data Storage address; Reading out data, carries out MPEG4 decoding; Store decoded video file, and get back to and obtain video process address step.
Described focusing comprises the following steps: wait for the arrival of focusing instruction; If focusing instruction arrives, the instruction transformation of focusing is the discernible form of Underwater Camera, and focuses according to focusing instruction.
The present invention has the following advantages:
1. unipolarity conduction, has reduced system loss;
2. Underwater Camera focal length can on-line control;
3. video is compressed when Internet Transmission, save Internet resources, MPEG4 decoding can obtain high-quality video file;
4. transmission medium is optoelectronic composite cable, by utmost safeguards system volume of transmitted data of optical fiber transmitting video data.
Accompanying drawing explanation
Fig. 1 apparatus of the present invention circuit theory diagrams;
Fig. 2 video acquisition of the present invention, storage means control program flow chart;
Fig. 3 focus adjustment method of the present invention control program flow chart.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, 2, 3, one of the present invention is applicable to seabed long-term observation video acquisition, storage device, comprise: electric power system is-600V DC power supply, single-stage output, another is seawater very, the bipolar transmission system of common formation, adopts negative polarity output can better play the effect that prevents seawater corrosion; Cathode electrode, material titanium alloy are installed in underwater electronic compartment; Underwater electronic compartment shell scribbles epoxy resin, as the another means that prevent seawater corrosion; For guaranteeing long-distance transmissions, transmission medium is the optical fiber in optoelectronic composite cable; The method that focus adjustment adopts RS232 to control Underwater Camera realizes, and in electronic compartment, video server is converted to ethernet signal by RS232 signal under water; In cabin, be provided with 600V/24V power supply, be responsible for submarine system power supply; Computer is connected by netting twine optical switch; Switch, by being connected to the optoelectronic composite cable of a pair of optical fiber on 8 core underwater electrical connectors on underwater electronic compartment, has 2 core fibres in 8 core underwater electrical connectors, 6 core copper cash; 2 core fibres are G655 monomode fiber; The cross-sectional area of 6 core copper cash is for being greater than 2mm
2; 2 core fibres in 8 core underwater electrical connectors connect video server; Video server connects video camera; Video server is can distributing IP address style; Video server is with RS232 port, and the RS232 port of RS232 port and Underwater Camera is connected, and carries out focus adjustment; Video server is connected by 8 core underwater electrical connectors with Underwater Camera; These 8 core underwater electrical connector, 8 cores are copper core, and cross-sectional area is greater than 2mm
2.
-600V power supply is selected the WYJ600 D.C. regulated power supply of Shanghai Wen Hua power-supply device Co., Ltd.
Industrial computer is for grinding magnificent IPC-610-L, and this industrial computer is for being 19, and " frame is installed, and aims at crucial application task and designs.Comprise the abundant external tappings such as PCI/ISA bus and network, serial ports, parallel port, passive backplane or standard A TX mainboard, and support various power supplys.
Netting twine adopts common double end RJ45 netting twine, and in order to guarantee transmission quality, length of mesh wire is less than 20 meters.
Optical switch adopts the EDS728 optical switch of MOXA.EDS-728 modular ethernet switches allows your network planning more hold and flexibly.4 gigabit ports of modular design configurations and 24 fast ethernet ports.Can from the gigabit module of the gigabit module of 2 kind of 2 port and 5 kind of 1 port, select suitable gigabit port (electricity mouth/light mouth), from 100,000,000 modules of 8 kind of 4 port, select 100,000,000 ports (electricity mouth/light mouth, SC/ST).EDS-728 can meet the requirement of any commercial Application, and provides space for later dilatation.
8 core underwater electrical connector I adopt the compound 8 core connectors of nautilus series photoelectricity of ODI, wherein 2 core fibres, 6 core cable copper cores.
600/24V power supply is selected the DC/DC600-24 power module of Hangzhou Mei Zan Electronics Co., Ltd., and power is 600W.
Video server adopts the VPort-461 video server of MOXA.VPort 461 is H.264 technical grade video encoders of a 1 passage, and video quality best on market is provided, and uses less bandwidth to carry out video compression.3 groups of video flowings (H.264 and MJPEG) can be provided nearly simultaneously.User can do these video flowings different utilizations, similarly is supervise, record a video or analyze.VPort 461 also possesses the robust design of technical grade, comprises the protection of-40 ~ 75 ° of wide temperature abilities to work of C, IP30 grade and authenticates by multiple technical grade, and the characteristic of these strengthenings makes VPort 461 be more applicable for harsh applied environment.VPort 461 has been equipped with the DynaStream of Moxa innovation
tMtechnology, can effectively reduce the consumption of video to bandwidth.DynaStream
tMtechnology control to video flowing according to system or system manager, adjusts the transmission rate of video frame number automatically.
8 core underwater electrical connector II adopt the DBH8F series 8 core watertight connectors of subconn company.
Underwater Camera is selected Tritech Typhoon-AS series Underwater Camera.Tritech is that specialty is produced high performance various sonar systems, camera and machine tool equipment in market under water specially, and it is ROV(straighforward operation equipment) transducer and instrument and AUV(autonomous robot under water) the leading enterprise in market.
Concrete connection is as follows:
Grind magnificent industrial computer and EDS728 optical switch by the link of double end RJ45 netting twine, optoelectronic composite cable is that 2 core fibres, single core copper conductor form.Wherein 2 core fibres connect the optical interface of optical switch EDS728.Single core copper conductor connection-600V DC power supply WYJ600 of optoelectronic composite cable.The optoelectronic composite cable other end connects 8 core underwater electrical connector I, and by the switching of connector, single core copper conductor connects 600/24V DC transformating power, and the 24V direct current of DC transformating power output flows to video server VPort461 and Underwater Camera.
Method of the present invention comprises video acquisition, storage means and focus adjustment method, as follows respectively:
Video acquisition, storage means:
System starts;
Whether normally detect switch, carry out undesired quitting a program if normally continue;
Whether normally detect video server, carry out undesired quitting a program if normally continue;
Capturing video server handle;
Create video decode process;
Obtain video process address;
Create Video Data Storage address;
Reading out data, carries out MPEG4 decoding;
Store decoded video file, and get back to and obtain video process address step.
Focus adjustment method:
System starts;
Whether normally detect switch, carry out undesired quitting a program if normally continue;
Whether normally detect video server, carry out undesired quitting a program if normally continue;
Wait for that focusing instruction arrives;
Down carry out if instruction arrives, otherwise continue to wait for;
Be the discernible form of Underwater Camera by instruction transformation;
Instruction is focused according to instruction after arriving.
Claims (7)
1. the video acquisition, the storage device that are applicable to seabed long-term observation, is characterized in that,
Part comprises Underwater Camera and underwater electronic compartment under water, and underwater electronic compartment connects the inside and outside of underwater electronic compartment housing by 8 core underwater electrical connectors; Underwater Camera connects 8 core underwater electrical connector II by RS232 port, 8 core underwater electrical connector II connect RS232 port and the 600/24V power supply of the video server of underwater electronic compartment enclosure interior, video server connects 8 core underwater electrical connector I and 600/24V power supply, and 600/24V power supply is described video server and Underwater Camera power supply;
Part comprises optical switch ,-600V DC power supply and industrial computer on the water; Optical switch is connected 8 core underwater electrical connector I with-600V DC power supply by optoelectronic composite cable, and optical switch connects industrial computer by netting twine.
2. a kind of video acquisition, storage device that is applicable to seabed long-term observation according to claim 1, it is characterized in that, described-600V DC power supply is one pole output, and the outside cathode electrode of installing of underwater electronic compartment connects 600/24V power supply, forms bipolar transmission system.
3. a kind of video acquisition, storage device that is applicable to seabed long-term observation according to claim 2, is characterized in that the electrode that described cathode electrode is titanium alloy.
4. a kind of video acquisition, storage device that is applicable to seabed long-term observation according to claim 1, is characterized in that, described underwater electronic compartment housing outer surface has epoxy resin layer.
5. a kind of video acquisition, storage device that is applicable to seabed long-term observation according to claim 1, is characterized in that, the length of described netting twine is less than 20 meters.
6. the video acquisition, the storage means that are applicable to seabed long-term observation, is characterized in that, comprises the following steps: system starts; Whether industrial computer detects optical switch normal, if whether normally detect video server normal, if normal capturing video server handle in internal memory; Create video decode process; Obtain video process address; Create Video Data Storage address; Reading out data, carries out MPEG4 decoding; Store decoded video file, and get back to and obtain video process address step.
7. a kind of video acquisition, storage means that is applicable to seabed long-term observation according to claim 6, is characterized in that, described in focus and comprise the following steps: wait for the arrival of focusing instruction; If focusing instruction arrives, the instruction transformation of focusing is the discernible form of Underwater Camera, and focuses according to focusing instruction.
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Cited By (4)
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| CN105225229A (en) * | 2015-09-07 | 2016-01-06 | 三峡大学 | Fish based on vision signal cross dam movement locus locating device and method |
| CN108012077A (en) * | 2017-11-10 | 2018-05-08 | 北京臻迪科技股份有限公司 | Camera control method, photographic method, apparatus and system |
| CN109448383A (en) * | 2018-12-24 | 2019-03-08 | 广东创瑜机电工程有限公司 | A kind of tunnel event analysis implementation method based on video flowing |
| CN115291456A (en) * | 2022-09-28 | 2022-11-04 | 中国科学院深海科学与工程研究所 | Deep sea camera lens control device and control method thereof |
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Cited By (5)
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| CN115291456A (en) * | 2022-09-28 | 2022-11-04 | 中国科学院深海科学与工程研究所 | Deep sea camera lens control device and control method thereof |
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Application publication date: 20140611 |