CN2677970Y - Camera for underwater purse seine cultivation - Google Patents
Camera for underwater purse seine cultivation Download PDFInfo
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- CN2677970Y CN2677970Y CN 03270074 CN03270074U CN2677970Y CN 2677970 Y CN2677970 Y CN 2677970Y CN 03270074 CN03270074 CN 03270074 CN 03270074 U CN03270074 U CN 03270074U CN 2677970 Y CN2677970 Y CN 2677970Y
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- purse seine
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Abstract
The utility model relates to a camera for the underwater purse seine cultivation, which is applied to the aquaculture industry of aquatic purse nets. The utility model is used to inspect the breakage of underwater purse nets, and the utility model is especially used to inspect the breakage of large area purse nets on the condition that the water is turbid. The utility model is composed of an underwater camera and an automatic regulator; the former has a very large waterproof casing, and the front side of the casing is provided with waterproof transparent glass, a camera core, and lighting equipment; both the camera core and the lighting equipment are arranged in the waterproof casing to shoot through the front glass. During the working time, the automatic regulator automatically regulates the position of the camera under water to have the glass face pressed closely against the underwater purse nets, so the shoot is rather lightly influenced by the water quality. The automatic regulator is composed of a fixing clamp, a movable casing tube, a rotating shaft, positioning screws, linkage rods, a U-shaped support rack, and a convex shaft. The working principle of the automatic regulator is that through the buoyancy under water, the camera can rotate around the two joints of the automatic regulator, and finally, the front side glass of the camera is pressed closely against the underwater purse nets to reach balance.
Description
Technical field the utility model relates to a kind of underwater camera device, is applied to aquatic products seining cultivation industry, and purse seine breakage is under water checked.Purse seine seems a face wall, stops the fish crab to escape by it.Leakage detection on the large tracts of land purse seine, water muddiness especially, leakage detection under the too low situation of visibility is the problem of owner's headache of seining cultivation industry always, the owner of present most aquacultures employs under the fisherman water to investigate the very big and inefficiency of labour intensity with hand.Extremely indivedual owners come leakage detection with camera under water.Its method is: the underwater camera head is fixed on an end of a bamboo bar, and the hand-held aboard ship bamboo pole other end of people stretches into undersea detection with camera, just can observe the state of purse seine under water by the monitor on the ship.But this method is limited by water quality, and viewing area is too little, and operation inconvenience, and randomness is very big, and inefficiency is impracticable.This camera head is head it off just.It comprises two parts: camera and control device.The former effect is that the picture signal of picked-up purse seine sends display monitor central monitoring system to by cable; The latter's effect is control camera position under water, that is: by stationary fixture and connecting rod, with the camera relative fixed under water at the side-lower certain depth of ship, during leakage detection, ship is started along purse seine, whole instrument is capable with ship, need not anyly operate, only rely on the buoyancy of water to camera, control device just can be controlled camera and be adjacent to purse seine automatically and slide, and finishes the flat push type scanning to purse seine.
Background technology is present, and the underwater camera head of knowing altogether is to be made of CCD or cmos camera, lighting device and waterproof case.Its underwater camera distance, scope depend primarily on water quality.When water quality was limpid, the raiser carries out interior among a small circle purse seine leakage detection under water with it, and was comparatively convenient.When water quality is very muddy, light scattering in water is serious, even very high-grade underwater camera head, even more high-grade Underwater Camera, also only be close on the purse seine, could absorb picture intelligence clearly, but this moment, imaging area was too little, and camera minute surface size is generally only arranged---the circle of diameter 50 millimeter.This moment is with its leakage detection on the large tracts of land purse seine, as looks for a needle in a haystack.With regard to the water system of the Changjiang river, the annual most of the time, especially be the damaged multiple phase of purse seine flood season, and water quality is relatively poor, and suspension is many, low visibility, and it just can not use.Carry out the purse seine leakage detection with this class underwater camera head, opportunity available very little, and efficient is low, easily under-enumeration.
Summary of the invention carries out the purse seine leakage detection in order to overcome with existing underwater camera head, be subject to water quality, and inefficient shortcoming, the utility model provides a kind of leakage detection instrument of purse seine under water, it can not only adapt to various water quality, and have control device, and can carry out comprehensively the large tracts of land purse seine, quick leakage detection, easy to operate.
The technical scheme that the utility model technical solution problem is adopted is:
1, the special waterproof case of camera: see also accompanying drawing 2, housing (12) is done the rectangularity funnel shaped, except that flange port and cable outlet, all sealings, cavity of inner formation.The camera lens of veneer video camera (13) passes from the circular hole at infrared illumination circuit board (14) center, and together the be fixed on housing afterbody of (12), and gets in touch by the power supply and the display monitor central monitoring system of cable and outside, seals with glue around the outlet of cable; Stack sealing rubber pad (15), Water-resistant mirror surface glass (16) on the flange port of housing (12) successively, press a mouthful frame (17), and it is they and shell flange are tight-lipped solid with sealing and fixing screw (18), make enclosure interior become an airtight environment, veneer video camera (13) sees through Water-resistant mirror surface glass (16) and takes.Like this, compare with camera under the traditional water, it is big that waterproof case becomes, and camera lens increases to the distance (being called object distance L here temporarily) of Water-resistant mirror surface glass (16), and the useful area of Water-resistant mirror surface glass (16) (being called viewing area S here temporarily) also increases.When looking into net, the Water-resistant mirror surface glass is close on the purse seine, like this, the reflection ray of purse seine almost directly passes two-way mirror and enters the casing air dielectric, and arrives the camera lens imaging, and S is exactly visual purse seine area.Because light need not through thick water layer, so imaging and water quality relation are little.Jiao of choose reasonable viewing area S, object distance L and camera lens gathers f, both can make the volume of casing moderate, increases flexibility of operation, can obtain bigger viewing area S again, increases work efficiency.The step that concrete parameter is established is: S at first establishes.Owing to adopt horizontal sliding scanning work mode, so minute surface is done rectangularity, strengthen height as far as possible, width then can suitably reduce, to dwindle the volume of casing, the convenient manipulation.The ratio of width to height of the image that is become is got final product about 5: 1.(height of the capable corresponding sightingpiston of video camera, and the full width of cloth of image row; Video camera the field corresponding sightingpiston wide, the image field width of cloth only takes about 1/3rd of the width of cloth.) for example, through practice test, a comparatively ideal size is high, wide 880mm, the 160mm of getting respectively.Next step establishes f.Because the f value is more little, the horizontal view angle is big more, and object distance L is more little, thereby the degree of depth of casing is more little, and then volume is more little, but distortion is big more around the image.Consider that leakage detection is not high to the image geometry deformation requirements, take into account the bulk factor of casing, select the poly-single card microcomputer camera lens of fixedly Jiao of f=2.1mm for use, about 110 degree of horizontal view angle.If the two-way mirror height of waterproof case is got 880mm, object distance L=(880/2)/tag (110 degree/2)=300mm then.The casing size of making like this is more moderate, is convenient to control device work.
2, how a big camera like this finishes the horizontal sliding scanning to purse seine under water, relies on control device to realize fully.This apparatus structure sees also accompanying drawing 1, is made up of stationary fixture (1), moving casing (2), rotating shaft (3), set screw (4), connecting rod (5), " U " type support (6) and protruding axle (7).Protruding axle (7) is symmetrically welded at the casing both side surface at 40mm place, casing center of gravity vertical coordinate below, and " U " type support (6) is enclosed within on the protruding axle (7), and can freely rotate around protruding axle (7); Connecting rod (5) one ends are connected by the screw rigidity with " U " type support (6), and the other end freely interts in moving casing (2), and adjust and fix its position in moving casing (2) by set screw (4); Moving casing (2) is hinged with the corner of stationary fixture (1), and rotating shaft (3) is hinged axle, and moving casing (2) can center on rotating shaft (3) and freely rotate in 90 degree of plane; Stationary fixture (1) is clipped in the side of ship, makes whole instrument and ship relative fixed.Like this, form two two-dimensional activity joints in rotating shaft (3) and protruding axle (7) two places.When looking into net, ship stops in front of purse seine, and the operator presses Fig. 1 with instrument and connects, and stationary fixture (1) is fixed on the side of ship near purse seine, when camera (8) is immersed under water certain depths, under buoyancy function, on the one hand, camera (8) will rotate around protruding axle (7), the position of protruding axle (7) is below center of gravity, when having determined the local free balance of camera (8), minute surface is vertical ground all the time, is convenient to be adjacent to purse seine; On the other hand, buoyancy make camera (8) drive " U " type support (6), connecting rod (5), moving casing (2) and set screw (4) together around the shaft (3) make circular motion and rise, be adjacent to purse seine up to minute surface, be prevented from and balance.As seen, near purse seine, and the joint that protruding axle (7) is located guaranteed that whole camera minute surface and purse seine are adjacent to when the joint that rotating shaft (3) is located guaranteed that whole camera rises.Like this, when looking into net, as long as ship and purse seine keep suitable distance, and start along purse seine, the camera minute surface just can be adjacent to purse seine all the time automatically and slide, and finishes " scanning " to purse seine.The operator only needs to adjust camera in advance at every turn and puts into the degree of depth, promptly establishes scope to be looked into, and looks into net and need not other operation in this scope, only needs to watch monitor with starting of ship and gets final product, and is very convenient.
The beneficial effects of the utility model are, can be under the environment of different quality, and easy and simple to handle, efficient is high to leakage detection in the purse seine large tracts of land scope under water, and very high cost performance is arranged.
Description of drawings further specifies the utility model below in conjunction with drawings and Examples.
Fig. 1 is that the utility model is formed and working state figure.
Among the figure, 1. stationary fixture, 2. moving casing, 3. rotating shaft, 4. set screw, 5. connecting rod, 6. " U " type support, 7. protruding axle, 8. camera, 9. cable, 10. monitor, 11. power supplys.
Fig. 2 is an embodiment camera structure exploded view.
Among the figure, 12. housings, 13. veneer video cameras, 14. infrared illumination circuit boards, 15. sealing rubber pads, 16. two-way mirrors, 17. press a mouthful frame, 18. sealing and fixing screws.
Fig. 3 is the front view and the upward view of embodiment camera waterproof case housing.Marked critical size among the figure.
Fig. 4 is an embodiment infrared illumination circuit diagram.In the circuit diagram, integrated package 1 pin ground connection, R11 is connected across integrated package 1, between 2 pin, photosensitive resistor rp is connected across integrated package 2, between 4 pin, integrated package 3 pin connect triode D50 base stage by R10, integrated package 5 pin are by capacitor C 2 ground connection, integrated package 6,7 pin envelope connects and connects integrated package 8 by R9,4 pin, integrated package 8 pin connect+12 volts of power supplys by diode D49, capacitor C 1 is connected across between integrated package 8 pin and the ground power filter, and R1-R8 and D1-D48 form eight identical parallel branches, and each branch road has 6 diodes of 1 resistance forward to connect, and be connected across between integrated package 8 pin and the triode D50 collector triode D50 grounded emitter jointly.In the circuit, D1-D48 is the infrared illumination diode; R1-R8 is a current-limiting resistance; Photosensitive resistor rp, integrated circuit NE555 and peripheral cell constitute light-operated circuit, realize illumination automatically.Component parameters: R1-R8=56 Ω, R9=2M Ω, R10=10K, R11=39K, RP variation range 10-100K, C1=1000 μ, C2=0.1 μ, D1-D48 adopts the Infrared High-Power light emitting diode of wavelength 880nm.
Embodiment camera part: the two-way mirror significant height of preferred waterproof case is 880mm in the practice, and effective width is 160mm; Select for use fixedly Jiao of f=2.1mm poly-, fixed aperture single card microcomputer camera lens, horizontal view angle 110 degree, then object distance is (880/2)/tag (110 °/2)=300mm; Camera machine stamen is selected 38*38mm for use, and 1/3 inch, 520 lines, black-white CCD single card microcomputer, illumination 0.01LUX, F1.2, shutter 1/50-1/100000sec.MTV-0344 type as the production of Taiwan Min Tong company.Camera machine stamen highly is 40mm after setting up camera lens.Remaining again 20mm installing space so just can draw the camera waterproof case housing degree of depth and be of a size of 40mm+20mm+300mm=360mm (being this size of 280+80=360mm among Fig. 3).According to the size of Fig. 3, housing forms with the steel plate integrally stretching, wall thickness 2mm.Protruding axle (7) as shown in fig. 1 is welded on surface of shell in addition, and the cable of transmission power supply and vision signal is introduced from the housing afterbody, and the cable inlet place will seal and not intake; Among Fig. 2, two-way mirror (16) adopts the thick tempered glass of 5mm, is difficult for broken.According to Fig. 2, elder generation is with the camera lens of veneer video camera (13), pass from the circular hole at infrared illumination circuit board (14) center, and together be fixed on the afterbody of housing (12), then sealing rubber pad (15), Water-resistant mirror surface glass (16), a pressure mouthful frame (17) are overlayed on the flange port of housing (12) successively, and with sealing and fixing screw (18) that they and shell flange are tight-lipped solid.Mounted camera integral body is airtight, bears 2 atmospheric pressure, so complete energy competent common 5 meters dark in interior underwater operation.
Control device part: among Fig. 1, connecting rod (5), " U " type support (6) are that the steel pipe of 20mm, 15mm is made with diameter respectively, and length of connecting rod is decided by territory of use's depth of water, and general 4 meters get final product, it is connected by screw with " U " type support (6), to make things convenient for installation and removal." U " type support (6) rotates around protruding axle (7) and wants flexibly, and with being made of one of housing, can not be split.Stationary fixture (1) and moving casing (2) adopt steel-casting, and with being made of one of rotating shaft (3), need not dismounting, as long as enough intensity is arranged, hinged rotation gets final product flexibly.During actual the use, earlier connecting rod (5) one ends are connected by the screw rigidity with " U " type support (6), the other end freely interts in moving casing (2), adjust the position, use set screw (4) that connecting rod (5) is fixed in the moving casing (2) then, at last, with stationary fixture (1) with whole instrument relative fixed side overboard.9.6 kilograms of actual measurement camera deadweights, in immersion water following time, be subjected to 18 kilograms of buoyancy, during operate as normal, keep about 50 centimeters distance between ship and purse seine, so that make connecting rod (5) and perpendicular line keep one 15-30 ° angle, guarantee that the camera come-up has a suitable moment, so more helps camera and is adjacent to purse seine rightly.
Claims (3)
1. a purse seine leakage detection instrument under water is made of camera and control device, and it is characterized in that: video camera and lighting device are sealed in the special waterproof case of camera.
2. the leakage detection instrument of purse seine under water according to claim 1 is characterized in that: the waterproof case that camera is special is made of housing (12), sealing rubber pad (15), Water-resistant mirror surface glass (16), a pressure mouthful frame (17), sealing and fixing screw (18).
3. the leakage detection instrument of purse seine under water according to claim 1 is characterized in that: control device is made up of stationary fixture (1), moving casing (2), rotating shaft (3), set screw (4), connecting rod (5), " U " type support (6) and protruding axle (7); " U " type support (6) is enclosed within on the protruding axle (7), and can freely rotate around protruding axle (7); Moving casing (2) is hinged with the corner of stationary fixture (1), and rotating shaft (3) is hinged axle, and moving casing (2) can center on rotating shaft (3) and freely rotate in 90 degree of plane; Connecting rod (5) one ends are connected by the screw rigidity with " U " type support (6), and the other end freely interts in moving casing (2), and fix its position in moving casing (2) by set screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270074 CN2677970Y (en) | 2003-09-27 | 2003-09-27 | Camera for underwater purse seine cultivation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270074 CN2677970Y (en) | 2003-09-27 | 2003-09-27 | Camera for underwater purse seine cultivation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677970Y true CN2677970Y (en) | 2005-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03270074 Expired - Fee Related CN2677970Y (en) | 2003-09-27 | 2003-09-27 | Camera for underwater purse seine cultivation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677970Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535737C (en) * | 2007-09-28 | 2009-09-02 | 中国水产科学研究院黄海水产研究所 | Portable deep water net cage underwater monitor |
| CN104782586A (en) * | 2015-03-20 | 2015-07-22 | 李静 | Offshore fishing net pull rod |
| CN108177745A (en) * | 2018-02-11 | 2018-06-19 | 湖南达诺智能机器人科技有限公司 | A kind of underwater robot optical clarity equipment |
| KR101906517B1 (en) * | 2018-03-20 | 2018-10-11 | (재) 한국건설품질연구원 | Underwater structure diagnostic imaging device |
| CN109996038A (en) * | 2019-04-03 | 2019-07-09 | 临高海丰养殖发展有限公司 | Deep sea net cage monitoring device |
| CN113281350A (en) * | 2021-06-30 | 2021-08-20 | 浙江庚星科技有限公司 | Net cage broken net leakage detecting device |
| US20220082498A1 (en) * | 2020-09-16 | 2022-03-17 | Wyatt Technology Corporation | Measuring light scattering of a sample |
-
2003
- 2003-09-27 CN CN 03270074 patent/CN2677970Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535737C (en) * | 2007-09-28 | 2009-09-02 | 中国水产科学研究院黄海水产研究所 | Portable deep water net cage underwater monitor |
| CN104782586A (en) * | 2015-03-20 | 2015-07-22 | 李静 | Offshore fishing net pull rod |
| CN108177745A (en) * | 2018-02-11 | 2018-06-19 | 湖南达诺智能机器人科技有限公司 | A kind of underwater robot optical clarity equipment |
| KR101906517B1 (en) * | 2018-03-20 | 2018-10-11 | (재) 한국건설품질연구원 | Underwater structure diagnostic imaging device |
| CN109996038A (en) * | 2019-04-03 | 2019-07-09 | 临高海丰养殖发展有限公司 | Deep sea net cage monitoring device |
| CN109996038B (en) * | 2019-04-03 | 2020-12-11 | 海南海丰渔业发展集团有限公司 | Deep sea net cage monitoring device |
| US20220082498A1 (en) * | 2020-09-16 | 2022-03-17 | Wyatt Technology Corporation | Measuring light scattering of a sample |
| US11852584B2 (en) * | 2020-09-16 | 2023-12-26 | Wyatt Technology, Llc | Measuring light scattering of a sample |
| CN113281350A (en) * | 2021-06-30 | 2021-08-20 | 浙江庚星科技有限公司 | Net cage broken net leakage detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |