中国科学院机构知识库网格系统: 检索

Colorimetric and fluorescent independent dual "signal on" biosensor for accurate detection of ochratoxin A based on aptamer-triggered biocatalytic reactions 期刊论文 OAI收割
ANALYTICA CHIMICA ACTA, 2024, 卷号: 1299, 页码: 10
作者: Ding, Hao; Zhang, Mingdi; Wang, Xiaochun; He, Shuai; Wang, Xiaokun

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收藏 | 浏览/下载：23/0 | 提交时间：2024/05/23

Ochratoxin A Dual-channel Signal on In-system correction Mini-program

Colorimetric and fluorescent independent dual "signal on" biosensor for accurate detection of ochratoxin A based on aptamer-triggered biocatalytic reactions 期刊论文 OAI收割
ANALYTICA CHIMICA ACTA, 2024, 卷号: 1299, 页码: 10
作者: Ding, Hao; Zhang, Mingdi; Wang, Xiaochun; He, Shuai; Wang, Xiaokun

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收藏 | 浏览/下载：14/0 | 提交时间：2024/05/23

Ochratoxin A Dual-channel Signal on In-system correction Mini-program

Experimental and numerical study on a novel dual-resonance wave energy converter with a built-in power take-off system 期刊论文 OAI收割
ENERGY, 2018, 卷号: 165, 页码: 1008-1020
作者: Chen, Zhongfei; Zhou, Binzhen; Zhang, Liang; Li, Can; Zang, Jun

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收藏 | 浏览/下载：32/0 | 提交时间：2020/10/29

Wave energy converter Dual-resonance Built-in power take-off system Viscous correction Motion response Capture width ratio

Transitional compensation algorithm for correcting non-uniformity of LED display image (EI CONFERENCE) 会议论文 OAI收割
2012 2nd International Conference on Materials Science and Information Technology, MSIT 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaan, China
Su W.-x.; Chen Y.-s.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

In order to solve the problem of high non-uniformity of LED display images which is caused by the edges of LED display panel during module splicing transitional compensation algorithm is proposed by improving the existed correction technique named the correction technique based on CCD. First introduce the three development stages of the LED display panel. Then the realization progress of the transitional compensation algorithm is described in detail after elaborating the principle of transitional compensation. Finally the algorithm is emplaned in a LED video control system to control the LED display panel whose display area is 1280960 and which is spliced by 3020 LED modules whose size are 6432. Experimental results show that this algorithm is able to reduce non-uniformity of LED display images from 29.3% before correcting to 0.95%. (2012) Trans Tech Publications Switzerland.

Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文 OAI收割
Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states
作者: Zhang F.; Wang L.; Wang L.; Wang L.; He X.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

Freeform surfaces provide more degrees of freedom for design of optical systems and enhance the ability of compensation and correction aberrations. Freeform surfaces are of advantage to balance the unsymmetrical aberrations especially for the wide-field off-axis optical systems. This paper focus on an off-axis reflective optical system which focal length is 550mm F# is 6.5 and field of view (FOV) is 76. The system adopts some freeform surfaces. We discuss the problems we noticed in processes of design manufacture measurement and alignment and the solutions. At last the periodical research result and the expected performance are given. 2012 SPIE.

Correction of the non-uniformity for multi-TDICCD mosaic camera on FPGA (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010, November 7, 2010 - November 9, 2010, Henan, China
Zhu H.; Xue X.; Ma T.; Li H.; Si G.; Guo Y.

收藏 | 浏览/下载：44/0 | 提交时间：2013/03/25

To solve the non-uniformity problem of multi Time Delay Integral Charge Couple Device (TDICCD) mosaic camera several common non-uniformity correction methods are discussed. Secondly a non-uniformity correction algorithm is proposed and implemented on Field-Programmable Gate Array (FPGA) platform. Firstly the correction algorithm is designed. Finally the generation and definition of non-uniformity are introduced considering the fix-point processing ability of FPGA the correction algorithm is optimized properly and implemented on FPGA. The experimental results indicate that the non-uniformity can be decreased from 8.3%to 2.0% in 1s for 3-TDICCD mosaic camera's images with the proposed correction algorithm at 96TDI stage proving that this correction algorithm is of high real-time performance good practicality and satisfies the requirements of the target system. 2010 IEEE.

The research on servo control technology of O-E theodolite based on angular acceleration sensor (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Wei L.; Jin G.; Juan C.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

A new servo control methods for O-E theodolite is presented in this paper. The methods integrates optimally feed forward and feedback control and adopts acceleration delay compensation based on velocity delay compensation then achieves servo control of O-E theodolite effectively. Furthermore Angular acceleration sensor is applied as information resources and adaptive filter is formed to provide with feed forward control signal in the methods. For double closed loop servo control system of O-E theodolite the location correction loop and velocity correction loop are analyzed and designed. Simulation and experimental results show that comparing with traditional methods this servo control methods can improve significantly tracking precision and stability of O-E theodolite. 2010 IEEE.

The research on distortion measurement and compensation technology in photoelectricity measurement system (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Hong F.; Mujun X.; Zhiqian W.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

The distortion made by optical lens largely affect the measurement accuracy of the large field of view photoelectricity measurement system according to the theory of aberration in the photoelectricity system this paper design a series of distortion measurement devices in connection with the process of distortion correction in photoelectricity system establish the related mathmatics model make the real time distortion correction by the method of software compensation. The experimental results demonstrate the method decrease the measurement error made by the photoelectricity system distortion after the compensation in tatal field of view the systematic measurement error is less than 0.5 picture element. 2010 IEEE.

Embedded system of time uniform based on DSP (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Li N.; Liu C.-X.; Liu C.-X.; Chen J.; Guo L.-H.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

We introduced a design method of DSP-based System of time uniform which combine the GPS and the Compass to calibrate the time. The system can use UTC (Coordinated Universal Time) of the GPS or the Compass for time base to generate absolute time and different frequency of synchronous signals. We used DSP (Digital Signal Processor) to calculate the satellite information which includes the UTC time. After getting the UCT time information put it into the CPLD (Complex Programmable Logic Device) for correction of time delay and serialization to output. Meanwhile we divided 1PPS (one-pulse-per-second) signal of the GPS and the Compass into 20Hz 50Hz and 800Hz synchronous signal. And we analyzed the precision of time and frequency. To conclude the uncertainty of system absolute time is less than 100ns the uncertainty of system synchronous signals is less than 20ns. This system is easy and flexible for use stable and reliable in performance. 2010 IEEE.

Method of auto multi-exposure for high dynamic range imaging (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Piao Y.; Xu W.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

This paper proposes a method for calculating the multi-exposure times fast and accurately when the scene has a high dynamic range minimizing the pictures needed to take and improving the dynamic range of the CCD system. The proposed method first measures the camera's response function referring [10]. After that the median value of the output picture is adjusted to be in the middle range of the system output by changing the exposure time. It can be inferred from the histogram of the current picture whether it's a high dynamic range scene by calculating the number of pixels under exposed and over exposed. Once again the under and over exposed pixels are adjusted to be in the middle according to the camera's response function. Finally different exposed pictures (2 or 3) are fused together by Gaussian function and the dynamic range is compressed by y correction. Experimental results on UNIQ-UM400 analog camera and a digital acquisition system show that the algorithm works well and solve the problem of low dynamic range of CCD camera. 2010 IEEE.