CN201682557U - CCD camera device for resisting longitudinal halo - Google Patents
CCD camera device for resisting longitudinal halo Download PDFInfo
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- CN201682557U CN201682557U CN2009202439376U CN200920243937U CN201682557U CN 201682557 U CN201682557 U CN 201682557U CN 2009202439376 U CN2009202439376 U CN 2009202439376U CN 200920243937 U CN200920243937 U CN 200920243937U CN 201682557 U CN201682557 U CN 201682557U
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- video camera
- halation
- programmable gate
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Abstract
The utility model relates to the technical field of longitudinal halo resistance of a high-definition digital camera in a monitoring system, in particular to a CCD camera device for resisting longitudinal halo, which comprises a CCD camera and a computer; a field programmable gate array module, a voltage conversion module, a charge-coupled pick-up device module and a CCD signal processing module are arranged in the CCD camera, wherein the field programmable gate array module is connected with the voltage conversion module, the voltage conversion module is connected with the charge-coupled pick-up device module, the charge-coupled pick-up device module is connected with the CCD signal processing module, and the CCD signal processing module is connected with the field programmable gate array module. The longitudinal halo can be eliminated through shooting by using the device, and a clear shot picture also can be instantaneously obtained under intense light. The utility model is beneficial to traffic monitoring, security and protection monitoring as well as social security and traffic security maintenance.
Description
Technical field
The utility model relates to high-definition digital camera for resisting longitudinal halation technical field in the supervisory control system, especially a kind of ccd video camera device of resisting longitudinal halation.
Background technology
Video camera in the traffic surveillance and control system can often occur car light halation problem to night during automobile monitoring, and the various countries scholar is all seeking best solution.The night vision infrared imagery technique of comparative maturity in the prior art can be eliminated car light halation problem effectively, but its shortcoming is that cost height, image definition are low. and practical application is difficulty comparatively.In the literature search, it is that the two ccd image sensors synchronously of employing are used for the acquisition process to the halation image that 2007 the 5th periodicals of sensing technology journal have been stepped on " based on the research of the anti-halation method of the automobile of two ccd image sensors " by name, its principle is two ccd video cameras that utilize that the time of integration, one is long and the other is short, obtain same detection of a target two-way picture signal synchronously, in the hope of overcoming the little shortcoming of single CCD image sensor dynamic range.Adopt bitmap pixels brightness replacement algorithm, the brightness value of vignetted image vegetarian refreshments in the time of integration long-channel brightness value with corresponding pixel points in the time of integration jitty is substituted, in the hope of having reached the purpose of eliminating the halation phenomenon.But the technology with two CCD is eliminated halation, owing to adopt two different optical channels, design difficulty is bigger in practice, and design cost is higher, and effect is difficult to use in practice." low light shines and resist design and the making of dizzy CCD " of the publication of semiconductor optoelectronic magazine mainly improves in the design technology of CCD, but, no matter how to improve production technology, because the generation of halation is because high light has produced too much electric charge, unnecessary electric charge is difficult to discharge.At present, whatsoever technology does not discharge unnecessary electric charge if do not solve, and is difficult to the halation problem with thorough solution CCD imaging.Ccd sensor is present most widely used imageing sensor, but when light and shade part brightness in the scenery differs big, owing to be subjected to the restriction of its dynamic range, ccd image sensor can't obtain satisfied image, if with the ccd sensor shortening time of integration, then scenery brightness will be lost than the image of dark-part in the image; If prolong ccd sensor time of integration, then the halation phenomenon will take place than the highlights branch in scenery in the image.We studies show that: when area array CCD sensitization, be consistent the sensitive time of all pixels, but the light radiant flux of each pixel has very big difference, when the light radiant flux difference between the pixel is excessive, for the pixel that guarantees low-light level produces enough electric charges, the electric charge that the high brightness respective pixel produces is with saturated, unnecessary electric charge can spill in the pixel cell or vertical transfer register that closes on, make the pixel close on or with the sensitization of vertical movement by the pixel cell of this vertical register more than the actual light radiant flux, cause image fault.
The utility model content
The purpose of this utility model is a kind of camera system that can eliminate vertical halation of design, uses this video camera to take pictures and has better definition, in the hope of overcoming the deficiency of above-mentioned technology.
Realize that the technical solution of the utility model so yes is: a kind of ccd video camera device of resisting longitudinal halation comprises that ccd video camera 1, computer 2 constitute; Be provided with field programmable gate array module 1.1, voltage transformation module 1.2, charge coup module 1.3, ccd signal processing module 1.4 in the ccd video camera 1; Field programmable gate array module 1.1 is connected with voltage transformation module 1.2, voltage transitions mould 1.2 is connected with charge coup module 1.3, charge coup module 1.3 is connected with ccd signal processing module 1.4, and ccd signal processing module 1.4 is connected with field programmable gate array module 1.1.
The ccd video camera device of described a kind of resisting longitudinal halation is characterized in that, what described field programmable gate array module 1.1 was selected for use is the XC3S1200E chip.
The ccd video camera device of described a kind of resisting longitudinal halation is characterized in that, what described voltage transformation module 1.2 was selected for use is the CXD3400 chip.
The ccd video camera device of described a kind of resisting longitudinal halation is characterized in that, that described charge coup module 1.3 is selected for use is ICX205AK
The ccd video camera device of described a kind of resisting longitudinal halation is characterized in that, what described analog module 1.4 was selected for use is the AD9949 chip.
Ccd video camera device according to above-mentioned a kind of resisting longitudinal halation is characterized in that, described ccd video camera 1 is connected with computer 2.
The utility model mainly is made up of field programmable gate array, voltage transformation module, charge coup, ccd signal processing module.Field programmable gate array produces normal sequential and the anti-halation driving sequential of driving, the normal driving sequential and the anti-halation driving sequential that are produced by field programmable gate array convert the driving sequential that meets the charge coup interface requirement to through voltage conversion circuit, drive charge coupled device output sensitization electric charge, remove the residual charge of high light, promptly under the support of the utility model device, produce needed driving sequential the electric charge in all vertical transfer registers is removed, reach to eliminate the purpose of vertical halation.
Compared with prior art the utility model has outstanding characteristics and beneficial effect, at first by using this video camera of eliminating vertical halation to take, under high light, also can obtain clearly pictures taken immediately.For example, in traffic monitoring, because night, big lamp wiring was very strong, the vertical halation that produces under the effect of headlight causes the image distortion in the driver's cabin.If adopt technology of the present utility model, just can eliminate the halation on headlight top, make that the interior image of driver's cabin is clear.Secondly for traffic monitoring, safety monitoring maintain public order, the safety of traffic provides strong technical guarantee.
Description of drawings
Fig. 1 is a structured flowchart schematic diagram of the present utility model.
Fig. 2, Fig. 2 .1 are respectively circuit theory schematic diagrames of the present utility model.
Fig. 3 is a device embodiment schematic diagram described in the utility model.
Fig. 4, Fig. 5 are respectively the utility model embodiment effect photo comparison diagrams.
Embodiment
From Fig. 1, Fig. 2, Fig. 2 .1, Fig. 3, Fig. 4, among Fig. 5 as can be seen, the ccd video camera device of a kind of resisting longitudinal halation described in the utility model, comprise ccd video camera 1, computer 2 constitutes, be provided with field programmable gate array module 1.1 in the described ccd video camera 1, voltage transformation module 1.2, charge coup module 1.3, ccd signal processing module 1.4, field programmable gate array module 1.1 is connected with voltage transformation module 1.2, voltage transformation module 1.2 is connected with charge coup module 1.3, charge coup module 1.3 is connected with ccd signal processing module 1.4, and ccd signal processing module 1.4 is connected with field programmable gate array module 1.1.
What described field programmable gate array module 1.1 was selected for use is the XC3S1200E chip.This chip is a kind of at high power capacity, the low cost, the high performance logic solution that satisfy the needs of consumers and use; The treatment technology of the advanced person's that tested checking is real 90 nanometers, the interface pin of multivoltage, many Standard Selection.
What described voltage transformation module 1.2 was selected for use is the CXD3400 chip.This chip is the chip that a vertical sequential driver at ccd image sensor, 6 passages of supporting high frame frequency readout mode are formed; Has the input interface that vertical transitions is exported, electronic switch is exported, 2.7V-5.5V voltage is supported.
What described charge coup module 1.3 was selected for use is the ICX205AK chip.This chip is fit to be applied to electronic digital camera and PC input type camera, is Embedded ccd image sensor; To be an electronic switch can realize that with making it full frame digital image variable charge except that mechanical switch stores sequential to the character of this chip; Can high-velocity scanning allow to read out independently the picture signal from all pixels, high level and vertical resolution reach the 800TV-line, support the readout mode of high frame frequency, have the switch of continuous adjustable-speed.
What described analog module 1.4 was selected for use is the AD9949 chip.This chip is at digital camera and high-speed figure image applications, highly integrated ccd signal processor, and upgrading rises to the pixel rate of 36MHz.By an AFE (analog front end) completely that has A/D converter, programmable sequential driver constitutes.Have the kernel of time accurately and allow high-frequency clock and adjusting less than 600Ps resolution.Its AFE (analog front end) comprises the black level clamp, CDS, and PxGA, VGA, and 36MSPS, 12-bit ADC provides CCD clock at a high speed to drive at RG and H1 to H4 sequential driver, and operation is to use a 3-linear system row interface able to programmely.Described ccd video camera 1 is connected with computer.The pin of described module specifically connects, referring to Fig. 1, Fig. 2 .1 Fig. 3 wherein U4 be AD9949, UC1 is ICX205, U2 is CXD3400, the pin XV1 of CXD3400, XV2A, XV2B, XV3, HD, XSHT is provided by the XC3S1200E of Fig. 2 .1, and wherein, XSHT is the SUB signal.Described XC3S1200E produces and drives sequential, being input to CXD3400 produces the vertical drive sequential, carries out voltage transitions, CXD3400 is converted to sequential and meets the vertical sequential that the ICX205 driving interface requires, drive IC X205 output sensitization level, the sensitization level of output is finished analog-to-digital conversion by AD9949, be input to XC3S1200E, transfer data to computer by XC3S1200E again, by computer original image also; Before exposure time series begins, add the sequential of removing electric charge, just can know that vertical halation reaches the purpose of this utility model.Comparison diagram 4 Fig. 5, as can be seen, Fig. 4, because halation causes having in the driver's cabin two light belts, by Fig. 5 that this device is taken, the image in the driver's cabin is clearly.
The technical performance index of this device is as follows:
Pixel Dimensions: 4.65 μ m x, 4.65 μ m, photosensitive area (H x V): 6.47mm x 4.84mm, valid pixel (H x V): 1392 x 1040, spectral sensitivity: 280nm-1100nm, indigo plant=460nm, green=535nm, red=620nm (peak value) filter RGB Bayer filter.
Specific operation process:
Video camera is connected with computer by netting twine,, just can realizes control video camera by the client control camera that computer is installed.
1, the linking objective address is set,, clicks " address is set " button in the upper right corner, interface, eject " linking objective IP " dialog box, fill in the DCIP address and the collection terminal slogan that will connect, capture port numbers and control end slogan, default port DC connects the hurdle--and connect DC and gather port.
2, connect camera IP dialog box back click affirmation is set, then gather button and become available.Click " collection " button, then this button becomes ash, and software connects camera by the continuous acquisition port.
3, DC connects the hurdle--and preserve and gather picture:
Choose first " preservation " button of the software upper right corner, then software is set up catalogue with the picture that collects and is carried out picture and preserve under specified path.
Claims (6)
1. the ccd video camera device of a resisting longitudinal halation, comprise ccd video camera (1), computer (2) constitutes, be provided with field programmable gate array module (1.1) in the described ccd video camera (1), voltage transformation module (1.2), charge coup module (1.3), ccd signal processing module (1.4), it is characterized in that: described field programmable gate array module (1.1) is connected with voltage transformation module (1.2), voltage transformation module (1.2) is connected with charge coup module (1.3), charge coup module (1.3) is connected with ccd signal processing module (1.4), and ccd signal processing module (1.4) is connected with field programmable gate array module (1.1).
2. the ccd video camera device of a kind of resisting longitudinal halation according to claim 1 is characterized in that, what described field programmable gate array module (1.1) was selected for use is the XC3S1200E chip.
3. the ccd video camera device of a kind of resisting longitudinal halation according to claim 1 is characterized in that, what described voltage transformation module (1.2) was selected for use is the CXD3400 chip.
4. the ccd video camera device of a kind of resisting longitudinal halation according to claim 1 is characterized in that, that described charge coup module (1.3) is selected for use is ICX205AK.
5. the ccd video camera device of a kind of resisting longitudinal halation according to claim 1 is characterized in that, what described signal processing module (1.4) was selected for use is the AD9949 chip.
6. according to the ccd video camera device of claim 1,2,3,4,5, described a kind of resisting longitudinal halation, it is characterized in that described ccd video camera (1) is connected with computer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202439376U CN201682557U (en) | 2009-12-11 | 2009-12-11 | CCD camera device for resisting longitudinal halo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202439376U CN201682557U (en) | 2009-12-11 | 2009-12-11 | CCD camera device for resisting longitudinal halo |
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| CN201682557U true CN201682557U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202439376U Expired - Lifetime CN201682557U (en) | 2009-12-11 | 2009-12-11 | CCD camera device for resisting longitudinal halo |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186011A (en) * | 2011-05-13 | 2011-09-14 | 合肥埃科光电科技有限公司 | Digital high-definition camera based on full hardware |
-
2009
- 2009-12-11 CN CN2009202439376U patent/CN201682557U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186011A (en) * | 2011-05-13 | 2011-09-14 | 合肥埃科光电科技有限公司 | Digital high-definition camera based on full hardware |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
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| CX01 | Expiry of patent term |