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Study of Light Emitting Diodes for the application of Plant Growth in Green House

Study of Light Emitting Diodes for the Application of Plant ...

2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Meijuan Fu Lianqiao Yang Jianhua Zhang Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Educat Department of Materials Science and Engineering Shanghai University，P.O.B 143 149 Yanchang Rd. Sh

In this paper, the reliability issue of the LED lamp in high temperature and moisture condition was investigated. Thermal stress and hygroscopic stress in the LED package were obtained by coupled-field analysis using Finite element analysis (FEA). The results demonstrate that the temperature of the module can reach saturation in tens of seconds while the moisture field needs longer to reach balance. 85℃/85RH can reach the same distribution of relative humidity with 65℃/65RH, but the time spent is half. So temperature is the important factor to affect the humidity distribution. The moisture concentration is better than the relative humidity response to the material moisture level. So we made further research on hygroscopic stress. Both the thermal stress and hygroscopic stress contributed to the delaminations in LED packages.

关键词： Stress Moisture Light emitting diodes Electronic packaging thermal management Temperature Materials Thermal stresses

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Skill and tactic analysis for table tennis matches

Skill and tactic analysis for table tennis matches

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International Conference on Computer Science and Service system (CSSS)

作者： Ye-peng Guan Yong Ye Jing-jing Li Jing Si Hui Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China School of Physical Education and Sports Coaching Shanghai University of Sports Shanghai China

Due to complexity, multiplicity and randomness of table tennis matches, it is necessary to develop some skill and tactic diagnostic models especially an efficient scoring model to get some skill and tactics data for table tennis matches. A scoring model is developed for table tennis matches based on video image processing technology. An input match video is used to analysis the skill and tactic of the players. Once the player scored more than some criteria points constantly, it records this particular event either in the notebook or in database to arouse his attention. By playing the fragment of the record video either slow or fast as he likes, the player can know not only the reason why he lose the points, but also know the skill and tactic of the opponent. Besides it gives a dynamic grow of histogram for every score. The proposal improves the efficiency and quality of the matches. Moreover it provides an efficient guidance in the future's plan making, practice or competition for coachers and athletes.

关键词： Histograms Databases Streaming media Games Data acquisition Data models Load modeling

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Content based sports video sequences analysis and synthesis

Content based sports video sequences analysis and synthesis

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International Conference on Computer Science and Service system (CSSS)

作者： Ye-peng Guan Jing-jing Li Yong Ye Jing Si Hui Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China School of Physical Education and Sports Coaching Shanghai University of Sports Shanghai China

It is very important to analyze and synthesize sports video sequences efficiently for improving competition. Aiming at some limits existing in literature with complex computation and low efficiency in analysis sport video, a novel method has been developed to analyze and synthesize sport videos by intercepting pictures manually or automatically based on visual content. A group of continuous pictures is intercepted automatically from sports video sequences firstly. Some pictures can be added and removed manually based on visual content secondly. Some concerning pictures containing some important semantic information can be gotten in this way. Each picture can be analyzed by some marks added and can be saved in a container. Each group of pictures can be found in the related folder easily and can be demonstrated continuously. Much time is saved and some important semantic information in the sport video can be obtained efficiently by the proposal.

关键词： Semantics Video sequences Streaming media Multimedia communication Humans Computers Indexing

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Integration and verification case of IP-core based system on chip design

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Journal of Shanghai University(English Edition) 2010年第5期14卷 349-353页

作者：胡越黎周谌 School of Mechanical and Electronic Engineering and Automation Shanghai University Key Laboratory of Advanced Display and System Application

In this paper, the design and verification process of an automobile-engine-fan control system on chip （SoC） are introduced. The SoC system, SHU-MV08, reuses four new intellectual property （IP） cores and the design flow is accomplished with 0.35 btm chartered CMOS technology. Some special functions of IP cores, the detailed integration scheme of four IP cores, and the verification method of the entire SoC are presented. To settle the verification problems brought by analog IP cores, NanoSim based chip-level mixed-signal verification method is introduced. The verification time is greatly reduced and the first tape-out achieves success which proves the validity of our design.

关键词： system on chip （SoC） intellectual property （IP）-core integration verification pulse width modulation （PWM）- analog digital converter （ADC） linkage running

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Study on the adhesion strength of new nano-structured polymer-metal composite for thermal interface material (Nano-TIM) under different pressures

Study on the adhesion strength of new nano-structured polyme...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Lei Zhang Xiuzhen Lu Xin Luo Björn Carlberg Masoud Zandira Lilei Ye Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT Center School of Mechatronics Engineering and Automation Shanghai University Shanghai China SMIT Center & Bionano Systems Laboratory Department of Microtechnology and Nanoscience Chalmers University of Technology Gothenburg Sweden SHT Smart High Tech AB Gothenburg Sweden

With the continual increase in cooling demand for microprocessors, the microelectronics industry has been increasingly focused on the development of thermal solutions. Thermal Interface Material (TIM) plays a key role in reducing the thermal resistance of packaging and the thermal resistance between the electronic device and the external cooling components. Nano-TIM, a new type of thermal interface material, was developed to improve the heat dissipation of electronic devices. This paper describes work undertaken to research the reliability of Nano-TIM. Pull tests were used to investigate the shear strength of samples with Nano-TIM of different thicknesses coalesced between two PCBs with Sn coating made under different pressure. Scanning Electron Microscopy (SEM) analysis techniques were used to determine the morphology of the shear fracture section after pull tests and observe the structure of the cross section of Nano-TIM coalesced between two PCBs with Sn coating.

关键词： Materials Electronic packaging thermal management Thermal resistance Metals Heating Reliability Thermal conductivity

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Salient object segmentation based on graph cut

Salient object segmentation based on graph cut

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18th International Symposium on Intelligent Signal Processing and Communication systems, ISPACS 2010

作者： Shi, Ran Liu, Zhi Xue, Yinzhu School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Display and System Application Ministry of Education China

ISBN: (纸本)9781424473717

Salient object segmentation is an important technique for many content based applications. This paper presents an unsupervised salient object segmentation method under the graph cut optimization framework. First, we exploit a kernel density estimation based saliency model to generate the saliency map, which provides the useful cues for object segmentation. Then we exploit the saliency map to adaptively define the region cost term, the boundary cost term and their balancing weight in the cost function, which is minimized using graph cut to obtain a binary segmentation of salient objects. Experimental results on a variety of images demonstrate the better segmentation performance of our approach. © 2010 IEEE.

关键词： Costs

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Low-voltage and high-stability p-type doped blue organic light-emitting diodes with bilayer hole injection layers

Low-voltage and high-stability p-type doped blue organic lig...

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8th International Vacuum Electron Sources Conference, IVESC 2010 and NANOcarbon 2010

作者： Lu, L. Yu, J.N. Long, L. Yu, F.F. Zhang, J.H. Zhang, H. Wei, B. Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University 149 Yanchang Road Shanghai 200072 China

ISBN: (纸本)9781424466429

In recent years, organic light-emitting diodes (OLEDs) for the application of flat panel displays (FPDs) have been attracting many researchers. Blue OLEDs are the potential light source to make full color FPDs by color conversion method. However, due to a large energy bandgap of blue emission materials, blue OLEDs were widely reported to have relatively low luminance efficiencies and high operation voltage, compared to the devices with low energy emission wavelength. © 2010 IEEE.

关键词： Flat panel displays

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ASIC design of UHF RFID reader digital baseband

ASIC design of UHF RFID reader digital baseband

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2nd Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2010

作者： Liu, Jing Chen, Yihao Gu, Bin Zhang, Runxi Ran, Feng Lai, Zongsheng IMCS East China Normal University Shanghai 200062 China Key Laboratory of Advanced Display and System Application Shanghai University China

ISBN: (纸本)9781424467372

This paper presents the ASIC design and implementation of digital baseband system for UHF RFID reader based on EPC Global C1G2/ISO 18000-6c protocol. The digital baseband system consists of two parts: transmitter and receiver, which inculing encoding module, decoding module, channel filers, CRC chenk module, control module and a SPI module. It is described in verilog HDL in RTL level, with Design Complier for synthesizing, PT for static timing analyzing and Astro for physical design. The die is fabricated using IBM 130nm 8-layer-metal RF cmos process successfully, which size is 3 mm × 3mm, the power consumption is around 6.7mW. It can be applied in the research of single-chip UHF RFID reader.

关键词： application specific integrated circuits

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A fully integrated, highly linear SiGe BiCMOS class-AB power amplifier targeting 2.4GHz applications

A fully integrated, highly linear SiGe BiCMOS class-AB power...

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Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics (PrimeAsia)

作者： Zhang, Shulin Su, Jie Chen, Lei Tian, Liang Zhou, Jin Ruan, Ying Liu, Shengfu Zhang, Wei Hua, Lin Ran, Feng Lai, Zongsheng Institute of Microelectronics Circuit and System East China Normal University Shanghai China Key Laboratory of Advanced Display and System Application Shanghai University Shanghai China

ISBN: (纸本)9781424467372

This paper presents a 2.4GHz fully integrated power amplifier based on 0.18μm SiGe BiCMOS technology for wireless local area network applications [1]. The power amplifier shows a 1 dB compression output power of 22.19dBm at an input power of 0.135dBm. A temperature-insensitive bias circuit is used in this PA design to improve the amplifier linearity. The total fabricated die size is about 1.5mm×1.2mm. The designed PA based on SiGe BiCMOS technology demonstrates a competitive linearity performance compared with GaAs, when considering the factors of cost and process complexity.

关键词： Power amplifiers

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Frame-layer bit allocation for multi-view video coding based on frame complexity estimation

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Journal of Shanghai University(English Edition) 2010年第1期14卷 50-54页

作者：严涛安平沈礼权李振纲王贺张兆杨 School of Communication and Information Engineering Shanghai University Key Laboratory of Advanced Displays and System Application

Current multi-view video coding （MVC） reference model in joint video team （JVT） does not provide efficient rate control schemes. This paper presents a rate control algorithm for MVC by improving the quadratic rate-distortion （R-D） model. We reasonably allocate bit-rate among views based on the correlation analysisl The proposed algorithm consists of three levels to control the rate bits more accurately, of which the frame layer allocates bits according to the frame complexity and the temporal activity. Extensive experiments show that the proposed algorithm can control the bit rate efficiently.

关键词： multi-view video coding （MVC） rate control bit-allocation rate-distortion model correlation analysis frame complexity

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