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长春光学精密机械与物... [8]
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OAI收割 [8]
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会议论文 [8]
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2012 [3]
2011 [3]
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2006 [1]
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存缴方式:oaiharvest
内容类型:会议论文
专题:长春光学精密机械与物理研究所
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Embedded image grabber and processing system based on camera link (EI CONFERENCE)
会议论文
OAI收割
2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico
作者:
Wang Z.
;
Zhao Y.
;
Zhao Y.
;
Zhao Y.
;
Wang Z.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
In order to realize real-time measurement based on image
proposes a design project of embedded image grabber and processing system based on camera link interface. The system adopts FPGA+DSP structure design. DSP used to process the image and send out processing results to external. FPGA adopts modularize design. It contains camera link interface module
image memory module
DSP connection module and so on. The experiment results show that the system design flexibility
small cubage
high real-time image processing
and can fulfil the requirement of real-time measurement. 2012 TSI Press.
An embedded infrared image enhancement system based on DSP and FPGA (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Manufacturing Engineering and Process, ICMEP 2012, April 21, 2012 - April 22, 2012, Kunming, China
作者:
Zhang T.
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  |  
浏览/下载:33/0
  |  
提交时间:2013/03/25
According to the disadvantage of the large noises of histogram equalization algorithm
a new adaptive image enhancement algorithm is presented. First
the statistical histogram of the infrared image is done. Then the threshold of plateaus Equalization is calculated and the statistical histogram is modified. Finally the bright values of the pixels of the image are changed. An embedded high speed image enhancement processing system on high performance DSP TMS320DM642 and FPGA was designed. Experimental results with real images shown that the system can improve the contrast of the infrared image
limit the noises of the enhancement image
and effectively enhance the infrared image
the running time of the program is shorter
so it can meet the requirements of real-time in the project. (2012) Trans Tech Publications.
Research of software re-injection technology for aerospace camera controller in-orbit (EI CONFERENCE)
会议论文
OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
Xu W.
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  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
For the factors of increased of tasks
enhancements of functions and improvement of integrity and complexity in aerospace camera
application system has raised high and long-term in-orbit autonomy and reliability requirements on camera controller. Based on an actual project application background
this paper has put forward a design method of new high reliability aerospace camera controller in-orbit software reinjection instruction sequence which use TSC695F as kernel CPU and process flow of bootstrap receive
cache
checkout and storage update data. Finally
combined with specific test module for camera controller software re-injection
the validity of the software re-injection method raised here has been verified. Still here gives out reference codes of update data package which generated by the ground. 2012 IEEE.
Study on the servo system of large telescope based on the internal model pid control strategy (EI CONFERENCE)
会议论文
OAI收割
IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011, August 16, 2011 - August 18, 2011, Chengdu, China
Li H.
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  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
This paper developed the internal model PID control for large telescope control system considerations in more parameters adjustment in servo control loop at present. The large electro-optic telescope system belongs to a big inertia system. This simplifies the debug process
the feasibility and robustability are also verified by the analyses and simulation results that satisfy the high precision demand. The practicability of this algorithm is verified in an actual project that only two parameters need adjusted. The application shows that this system runs stably with high accuracy. The technology and methods adopted in the system are practical and worthy of using abroad. 2011 IEEE.
Research on computer control strategy for optical electric tracking system (EI CONFERENCE)
会议论文
OAI收割
2011 IEEE International Conference on Mechatronics and Automation, ICMA 2011, August 7, 2011 - August 10, 2011, Beijing, China
作者:
Li M.
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  |  
浏览/下载:18/0
  |  
提交时间:2013/03/25
In this paper
mathematic model and computer control strategy for optical electrical tracking system have been researched and discussed. First
the system's structure and its work process have been analyzed. Second
according to the system's moving law
the system's mathematic model has been built. As to the computer control strategy
trigger guiding
two closed loop PID control method as well as compound control method have been applied to satisfy the tracking accuracy. Third
we apply the bilinear transformation to get the digital system
and the sample time is 800Hz. The simulation results indicate that the maximum tracking error can be limited to less than 0.5 and the regulator time can be 0.04s. Then the control project resonance frequency should be more than 200Hz and the sample frequency should be more than 400Hz to meet the control accuracy requirement. So we can conclude that the system indexes such as swiftness
high accuracy as long as real time have been satisfied. And the requirement of mechanical property has been present which is very useful to mechanical working. 2011 IEEE.
Optimization and design of the bottom support of the primary mirror chamber in the opto-electronic device (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China
作者:
Zhang G.
;
Zhang G.
;
Zhang G.
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2013/03/25
In the large-diameter opto-electronic device tracking equipment
by full analyzing the support structure of the primary mirror
the primary mirror usually uses the combination of the bottom support and the lateral support. Because both the bottom support and the lateral support are installed on the primary mirror chamber's base plate
after changing the welded structure of the primary mirror chamber structure to the cast structure and improving the stiffness of the primary mirror base plate
the stiffness of the base plate will show in the amount of sloshing of the primary mirror relative to the primary mirror chamber and therefore influences the tracking accuracy of the opto-electronic device. During the assembling and adjusting of the primary mirror in the actual process of working on the project
the amount of sloshing of the primary mirror is reduced significantly. The results show that in working on the primary mirror support
as is found that the amount of sloshing of the primary mirror relative to the primary mirror chamber is comparatively large
the forms and structure stiffness of bottom support and lateral support should be considered
together with that the stiffness of the primary mirror chamber acting as the basis is playing the crucial role. 2011 IEEE.
A sensitive solid-phase time-resolved fluorescence immunoassay apparatus (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Song K.-F.
;
Li J.-L.
;
Zhang W.-L.
;
Wang Y.-L.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
In the device
a He-Ne laser of flash frequency 1-20 Hz was adopted as exciting light source
and three key technical problems have been solved successfully in order to enhance the detecting sensitivity and measuring stability of the device for time-resolved fluorimmunoassays(TRFIA) [1]. The first one is to design optimum exciting optical system
so that the exciting light beam excite the sample most effectively. The second one is to have a project spectrum filter which can reduce the affection of the background light to the photomultiplier tube and also ensure influence of the stray light and mixed diffusion light to the sample fluorescence to the least
the sample fluorescence through the integrating sphere and come to the grating monochromator
The right wavelength will be chosed through changing the angle of incidence of the grating monochromator. The third one is to simulate the principle of sample averaging of BOXCAR averager. In the device
SCM was used as primary controller and CPLD was used as timing controller. Through the preparation process
signal-to-noise ratio(SNR) will be improved
also adjust delay time
ampling frequency and sampling number arbitrarily. By testing
the sensitivity is 10-12mol/L(substance marked by Eu3+)
examination repeat is &le2.5%
examination linearity is from 10 -8mol/L to 10-12mol/L
correlation coefficient is 99.98%(p&le0.01). The instrument is advanced for ultrasensitive detection of antigen and antibody
and solve the tumor
genetic variation
the virus protein detection. 2009 SPIE.
Study on color difference estimation method of medicine biochemical analysis (EI CONFERENCE)
会议论文
OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Zhou Y.
;
Zhou F.
;
Wang C.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
The biochemical analysis in medicine is an important inspection and diagnosis method in hospital clinic. The biochemical analysis of urine is one important item. The Urine test paper shows corresponding color with different detection project or different illness degree. The color difference between the standard threshold and the test paper color of urine can be used to judge the illness degree
therefore
it can be used in hospital
so that further analysis and diagnosis to urine is gotten. The color is a three-dimensional physical variable concerning psychology
the estimation method of color difference in urine test can have better precision and facility than the conventional test method with one-dimensional reflectance
calibrating organization and family
while reflectance is one-dimensional variable
it can make an accurate diagnose. The digital camera is easy to take an image of urine test paper and is used to carry out the urine biochemical analysis conveniently. On the experiment
so its application prospect is extensive.
the color image of urine test paper is taken by popular color digital camera and saved in the computer which installs a simple color space conversion (RGB &rarr XYZ &rarr L*a*b*) and the calculation software. Test sample is graded according to intelligent detection of quantitative color. The images taken every time were saved in computer
and the whole illness process will be monitored. This method can also use in other medicine biochemical analyses that have relation with color. Experiment result shows that this test method is quick and accurate