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International Conference on Computing, Measurement, control and Sensor Network (CMCSN)

作者： Xuge Fan Sengbo Sang Jie Hu Peiwei Li Gang Li Wendong Zhang Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education MicroNano System Research Center Information Engineering College Taiyuan University of Technology Taiyuan Shanxi China

Recently biosensors based on silicon nanowire field-effect transistors (SiNW-FETs) have drawn huge amounts of attention, due to their ultra sensitivity, selectivity, label-free and real-time detection abilities. As people know more and more knowledge of the structure and function of nucleic acid molecules, DNA detection has gained importance increasingly. Here, we briefly summarize major fabrication methods in synthesising SiNW-FETs and selectively describe some applications of SiNW-FET biosensors in DNA detection over the past few years. Some key results from each article are summarized, involving the concept and mechanism behind each sensor, with the aim of stimulating more efforts in developing SiNW-FET biosensors for detecting DNA.

关键词： DNA Biosensors Nanobioscience Silicon FETs Fabrication

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I-V Characteristics of the Metal-Semiconductor Junction

I-V Characteristics of the Metal-Semiconductor Junction

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International Conference on Computing, Measurement, control and Sensor Network (CMCSN)

作者： Wenzhe Ma Wendong Zhang Pengwei Li Jie Hu Gang Li Shengbo Sang MicroNano System Research Center Information Engineering College 2Key Laboratory of Advanced Transducers and Intelligent Control System Taiyuan University of Technology Taiyuan Shanxi China

The electrical characteristic test of nanowires is important in nano-materials research. The metal-semiconductor junction that is fabricated with semiconductor nanowire and metal probe in electrical test system has impact on the test result directly, therefore it's necessary to study I-V characteristics of the metal-semiconductor(M-S) junction. Si, ZnO, GaN have been selected from multiple semiconductor materials. When they connected with tungsten probe, all of them formed Schottky barriers, but the relationships between current and voltage of the junctions are distinct. In the thesis, I-V curves of these M-S junctions are compared, and the best electrical performance of M-S junction is selected.

关键词： Nanowires Junctions Tungsten Silicon Zinc oxide Electrodes Gallium nitride

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Vehicle collision warning system and algorithm at intersection under internet-connected vehicles environment

Vehicle collision warning system and algorithm at intersecti...

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12th COTA International Conference of Transportation Professionals: Multimodal Transportation systems - Convenient, Safe, Cost-Effective, Efficient, CICTP 2012

作者： Liu, Tianping Wang, Yunpeng Wenjuan, E. Tian, Daxin Yu, Guizhen Wang, Jiajie Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control Beihang University Beijing 100191 China School of Transportation Science and Engineering Beihang University Beijing 100191 China College of Traffic Jilin University Changchun Jilin 130022 China AnHui Province Key Laboratory of Intelligent Transportation System Anhui Keli Information Industry Co. LTD Anhui 230088 China

ISBN: (纸本)9780784412442

In recent years, research on Intelligent Transportation system (ITS) was done to solve many traffic problems. Considering the problem of traffic safety at blind crossing, a vehicle collision warning system based on Internet-Connected Vehicles was proposed in order to prevent a vehicle collision before it occurs. Internet-Connected Vehicles plays an important role in realizing the next generation ITS. Under Internet-Connected Vehicles environment, the vehicles install communication equipments and can exchange their driving information, including their position, velocity, heading angle and so on. On this basis, physical and logical frameworks of the collision warning system were designed after analyzing the system function. Then time to collision (TTC) was introduced to judge the vehicle collision and a judgment algorithm was proposed based on inter-vehicle communication. Furthermore, time to avoidance (TTA) was introduced to be compared with TTC in order to define the severity of collision and the system could alert the driver according to the level of danger. Finally, the simulation was carried out and results proved that the warning algorithm of the system is effective to give the an driver alert. © 2012 American Society of Civil Engineering.

关键词： Cost effectiveness

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Uncalibrated dynamic eye-in-hand visual tracking of robots by observing unknown static objects

Uncalibrated dynamic eye-in-hand visual tracking of robots b...

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Chinese control Conference (CCC)

作者： Xinwu Liang Hesheng Wang Weidong Chen Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Department of Automation Shanghai JiaoTong University Shanghai China

ISBN: (纸本)9781467325813

Uncalibrated visual servoing techniques based on the depth-independent interaction matrix framework have been proposed for the general 3D motion control of robot manipulators, which can simultaneously handle both the unknown intrinsic and extrinsic camera parameters. By extending the existing adaptive eye-in-hand visual servoing approach based on the depth-independent interaction matrix, in this paper, we propose an uncalibrated dynamic visual tracking approach for the eye-in-hand camera configuration by observing multiple feature points of a static object. The proposed approach can simultaneously handle the unknown camera parameters and the unknown 3D coordinates of the feature points, where a new adaptive law is developed to estimate these unknown parameters online. On the basis of nonlinear dynamics of robot manipulators, we also prove the asymptotic convergence of the image errors with the help of Lyapunov theory. To demonstrate the performance of the proposed approach, preliminary simulation results will be given by using a two-link planar robot manipulator.

关键词： Cameras Robot kinematics Robot vision systems Manipulators Visualization Vectors

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An Improved Method for Phase Extraction Based on Gray Extremum

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Procedia Engineering 2012年 29卷 2355-2359页

作者： Xiu Qin Xiaoping Lou Naiguang Lv Peng Sun School of Photoelectronic Information & Communication Engineering Beijing Information Science & Technology University Beijing 100192 China Beijing Key Laboratory on Measurement and Control of Mechanical and Electrical System Beijing Information Science & Technology University Beijing 100192 China

Surface deformation of an object can be measured by digital shearography through non-contact measurement with a simple device. It is always difficult to remove the noise of the speckle interference. Consequently extracting phase from a single fringe pattern without carrier-frequency is complex. Based on gray extremum, an improved method for phase extraction is proposed by using the improved image binarization algorithm in this paper. Through comparing the average value of eight neighbourhood points around each pixel with threshold value, the quality of binary image can be improved, and then the skeleton line can be extracted. Finally a smooth extremum image can be obtained. Experimental results show that the proposed method is simple, convenient and reliable.

关键词： shearography phase extraction gray extremum method binarization skeleton

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Dynamic model based optimization control for combustion process of coke oven

Dynamic model based optimization control for combustion proc...

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31st Chinese control Conference, CCC 2012

作者： Lei, Qi Wu, Min Yu, Li Jing School of Information Science and Engineering Central South University Changsha 410083 China Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410083 China Key Laboratory of System Control and Information Processing Ministry of Education Shanghai 200240 China

ISBN: (纸本)9789881563811

In view of large range change of operating status of combustion process and difficulties in building global model and timely optimizing control parameters, this paper presents dynamic model based optimization control method using the property that just-in-time learning model can rapidly reflect process change characteristics. Based on the idea of local modeling, distance and change trend angle between samples are both considered to choose data and create an online sample library. With this dynamic sample library, a dynamic model for combustion process of coke oven is build. And based on the dynamic process model, the differential evolution algorithm is applied to optimization the universe parameters of fuzzy control to ensure the controller can meet the dynamic changes of the combustion process of coke oven. Simulations verified the effectiveness of the method. © 2012 Chinese Assoc of Automati.

关键词： Evolutionary algorithms

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Blind recognition of space-time block code using correlation matrices in a high dimensional feature space

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Journal of information and Computational Science 2012年第6期9卷 1469-1476页

作者： Luo, Minggang Gan, Lu Li, Liping School of Electronic Engineering University of Electronics Science and Technology of China Chengdu 610054 China National Key Laboratory of Information Control Technology for Communication System Jiaxing Zhejiang 314033 China

In modern wireless communication systems, one of the most promising techniques to improve the communication reliability and rate relies on the use of Multiple Input Multiple Output (MIMO) systems in association with Space-time Block Code (STBC). The recognition of communication parameters is a key step to decode the signals intercepted by receiver in a MIMO-STBC system. A new algorithm is developed to identify STBCs by adopting the Frobenius norms of space-time correlations matrices as features in a high dimensional space when the Channel State information (CSI) is unavailable. In this high dimensional feature space, STBCs possess better divisibility than the methods in literature. A classifier based on Support Vector Machine (SVM) is trained to recognize STBCs. Simulations show that our classifier works well in the environments of short samples, limited number of receiver antennas and various modulations;the new method can recognize some STBCs which can not be distinguished by the algorithms in literatures;our method has better performance of correct recognition probability than these algorithms. © 2012 by Binary information Press.

关键词： Channel state information

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Person re-identification across multi-camera system based on local descriptors

Person re-identification across multi-camera system based on...

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ACM/IEEE International Conference on Distributed Smart Cameras, ICDSC

作者： Qiao Huang Jie Yang Yu Qiao Institute of Image Processing and Pattern Recognition and Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai Jiao Tong University Shanghai China

Tracking the same person across multiple cameras is an important task in multi-camera systems. It is also desirable to re-identify the individuals who have been previously seen with a single-camera. This paper addresses this problem by the re-identification of the same individual in two different datasets, which are both challenging situations from video surveillance system. In this paper, local descriptors are introduced for image description, and support vector machines are employed for high classification performance and so an efficient Bag of Features approach for image presentation. In this way, robustness against low resolution, occlusion and pose, viewpoint and illumination changes is achieved in a very fast way. We get promising results from the evaluation with situations where a number of individuals vary continuously from a multi-camera system.

关键词： Vocabulary Cameras Histograms Feature extraction Image color analysis Support vector machine classification Kernel

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On-line and dynamic estimation of Rician fading channels in GSM-R networks

On-line and dynamic estimation of Rician fading channels in ...

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International Conference on Wireless Communications and Signal processing (WCSP)

作者： Yongsen Ma Pengyuan Du Xiaofeng Mao Chengnian Long Department of Automation Key Laboratory of System Control and Information Processing Ministry of Education Shanghai Jiaotong University China Department of Electronic Engineering Shanghai Jiaotong University China

ISBN: (纸本)9781467358309

The on-line and dynamic estimation algorithm for Rician fading channels in GSM-R networks is proposed, which is an expansion of local mean power estimation of Rayleigh fading channels. The proper length of statistical interval and required number of averaging samples are determined which are adaptive to different propagation environments. It takes advantage of the sampling signals and Rician fading parameters of last estimation to reduce measurement overhead. The performance of this method was evaluated by measurement experiment along the Beijing-Shanghai high-speed railway. When it is NLOS propagation, the required sampling intervals can be increased from 1.1λ in Lee's method to 3.7λ of the on-line and dynamic algorithm. And the sampling interval can be set up to 12λ although the length of statistical interval decreases when there is LOS signal, which can reduce the measurement overhead significantly. The algorithm can be applied in coverage assessment with lower measurement overhead, and in dynamic and adaptive allocation of wireless resource.

关键词： Dynamic Estimation Rician Rician fading channels Rician fading IN-LINE dynamic Dynamic algorithms sampling interval Self tuning

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Energy management in parallel hybrid vehicle using fuzzy control

Energy management in parallel hybrid vehicle using fuzzy con...

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International Conference on information Science and Technology (ICIST)

作者： Chaoqun Zhu Bin Yang School of Electrical and Information Engineering Key Laboratory of Advanced Control for Industrial Process in Gansu Province Lanzhou University of Technology Lanzhou Gansu China School of Electrical and Information Engineering Lanzhou University of Technology Lanzhou Gansu China

Hybrid electric vehicle techniques have been widely studied in recent years for their potential to significantly improve the fuel economy and reduce the emissions. In this paper, a hybrid energy management strategy is presented for a parallel hybrid vehicle. The proposed strategy incorporates a fuzzy logic controller to assess the amount of engine and motor's output torque and a charge sustaining scheme to ensure better battery's charge balance during the driving cycle. Finally, computer simulation works are carried out to evaluate the proposed energy management strategy. It was found that significant fuel consumption and emissions reduction could be achieved.

关键词： Torque Engines Batteries Vehicles system-on-a-chip Energy management Traction motors

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