A5058162842- Energy Harvesting in Wireless Networks
- Wireless Power Transfer Systems
- Advanced Vision and Imaging
- Image Processing Techniques and Applications
- Retinal Imaging and Analysis
- Digital Imaging for Blood Diseases
- Advanced Image Processing Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Radio Frequency Integrated Circuit Design
- Acoustic Wave Resonator Technologies
- Advancements in PLL and VCO Technologies
- Hydraulic Fracturing and Reservoir Analysis
- Statistical Methods and Inference
- Hydrocarbon exploration and reservoir analysis
- Ga2O3 and related materials
- Bayesian Modeling and Causal Inference
- Analog and Mixed-Signal Circuit Design
- Innovative Energy Harvesting Technologies
- Advanced Sensor and Energy Harvesting Materials
- Advanced SAR Imaging Techniques
- Web Data Mining and Analysis
- Semiconductor Quantum Structures and Devices
- Semiconductor materials and devices
- Text and Document Classification Technologies
- High-Voltage Power Transmission Systems
Zhejiang University
2024
Zhejiang Ocean University
2023-2024
Wuhan University of Technology
2013-2021
Xi’an University of Posts and Telecommunications
2018-2020
Xiamen University
2014
University of Pennsylvania
2011
Beijing Jiaotong University
2010
Peking University
2010
This article presents a quasi-uniform magnetic coupling-based effective-configuration wireless power transfer (WPT) system for drones wider-area charging with multiple extended transmitter coils. The coil two windings is proposed to cooperate small receiver misalignment tolerance efficient and coupling. worked out by simulation-based algorithm, which can be implemented simple low-cost procedures. Independent-operating coils are designed overlaps dynamic topology robust area extension...
Those retinal vascular image without regular background and fixed contrast, make conventional approaches hard to achieve a satisfactory partition. So this paper presents novel segmentation algorithm -- combination of genetic algorithms FCM fuzzy clustering algorithms. First is used obtain the approximate solution global optimal solution. Then as initial value algorithm, further for optimum. Experimental results show that effective in performing using morphological filtering.
In order to improve poor anti-offset capability of rotary transformer in electric excitation motor, a coaxial nested wireless power transfer (CNR-WPT) system has been proposed this paper. Firstly, considering the spatial geometric relationship coils and transmission efficiency CNR-WPT, preliminary coil structure proposed. Secondly, through theoretical derivation, specific between mutual inductance offset have studied verify feasibility design. Thirdly, aiming at problem that CNR-WPT is...
The commercial exploitation of shale gas in the United States has changed world's energy structure. At present, many countries are increasing their investments this field, including China. On basis systematic analyses laboratory test results, and drilling outcrops investigation data Suolun-Linxi area, northeast China, forming conditions exploration prospects Upper Permian Linxi Formation studied from such properties as source rock sedimentary characteristics, concentration organic-rich...
Bulk GaN substrates with low defect density are now commercially available. This material enables the fabrication of vertical devices high breakdown voltage, and excellent electrical performance power device figure merit. In this paper, we present a 1000V Vertical JFET that has positive threshold 1V. The normally-off FET integrates hetero-junction in design to improve transconductance enable efficient switching operation into 10s MHz.
A simple and efficient detection algorithm is proposed for the problem of image jitter in video quality diagnosis system. In gray projection feature selected to calculate correlation motion vector, which effectively solve threshold selection problem. PCA used main direction displacement vector. And relationship vectors vector judge jitter. This way utilizes statistical characteristics, enhances ability anti-noise reduces rate false positives. Experimental results show that can detect images,...
In this article, a tunable four-stage high-intermediate-frequency (IF) bandpass filter (BPF) chip using inductors with <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Q$</tex-math> </inline-formula> compensation digital resistor array (QCDRA) is presented. The high-IF BPF intends to out-of-band spurs and distortions for radio frequency analog-to-digital converter (RF-ADC) or RF digital-to-analog (RF-DAC),...
Abstract The design of SAR scene matching guidance scheme and the hardware allocation algorithm module are discussed in this paper. Aiming at requirement image preprocessing module, a fast robust feature extraction method based on FPGA is designed, implementation Gabor filter wavelet transform completed. Through hardware-in-the-loop simulation test experimental verification, FPGA-based pre-processing about 60 times shorter than DSP processing time, results FPGA, digital process consistent....
A highly efficient approach to improve PSRR behavior of Kuijk BGR topology is derived though small signal transfer function analysis and, a circuit has been designed and fabricated on standard 0.5μm CMOS technology verify this method. This thought greatly relieves the trade-offs design among power consumption, performance, area etc. consumes 3μA current at 5V single supply, with >130 dB DC occupies an 350μm×100μm, self-biased characteristic 2~6 V work supply voltage range.
In order to overcome the shortage of transmitting nonlinear data within resistance strain weighing sensor, this paper adopts piecewise linear interpolation method perform fitting between returned value and mass A/D (Analog Digital) converter. Using method, error interference caused by sensor is reduced, measurement accuracy electronic scale can be up to10-2g at least.
Based on the general digital scanning of paper documents, a Chinese character recognition model is designed by using convolution neural network and image processing technology. The developed based Python TensorFlow framework, printed completed improved AlexNet structure. system includes data preprocessing, text area location, single segmentation, result output. experimental results show that, premise high accuracy, small fast recognition, rate can basically meet needs practical use.
The adjustable high-power distributed DC power supply controlled by DSP presented in this article is a new type of electronic supply. Considering the features modern system, discusses and compares principles technical design application with those traditional result suggests that easy to install, energy-saving environment-friendly. It also has characteristics lower cost higher performance.
EXB841 gets the shortcomings as lack of gate-voltage, excessiveness over-current protection threshold and long soft-shutdown time etc. According to shortages, some improved managements were given. By improving power supply module, adding external gate-voltage molding circuit changing zener, not only output was boosted, but also modified. In addition, a novel designed latch signal, which protection. The simulation proved that overcomes defects EXB841. At end paper, series resonant IGBT...