Home > Archive > 2013 No. 04

2013 No. 04

Publish Date：2013-04-06
ISSN：0258-7998
CN：11-2305/TN
Prev Next

Special Comment

Integrated circuit industry influence factors and development mode in China

Author：Lei Jinliang1，2

Author Affilications：1.Institute of Microelectronics of Chinese Academy of Sciences，Beijing 100029，China； 2.High-Tech Research and development Center, Ministry of Science and Technology，Beijing 100044，China

Abstract：There are unique law of development and characteristics in integrated circuit industry，and the decision factors are various and complicated. It is not only a new theory study, but also the actual need of the development of the integrated circuit industry to study the decision factors of the development of the integrated circuit industry and to explore the industrial division of labor which is suitable for China’s conditions. This paper tries to study the decision factors of the development of the integrated circuit industry from several aspects with the system analysis，data verification and to discuss the development patterns of the integrated circuit industry of China at present stage.
Key word：
integrated circuit
decision factor
development pattern
empirical research
View(7904)

Embedded Technology

Design and implementation of a high speed real time sonar processing system

Author：Liu Xin，Sun Dajun，Tian Yuan，Teng Tingting

Author Affilications：Science and Technology on Underwater Acoustic Laboratory，Harbin Engineering University，Harbin 150001，China

Abstract：With widely applying prospect, underwater acoustic imaging technology has been paid more attention. A kind of data acquisition and real-time processing system of two-dimensional imaging sonar is introduced in this paper. The hardware structure and flow chart of this system are discussed. The high performance A/D，FPGA and DSP chips are used in the system for data acquisition and real-time processing while Ethernet applying for data transmission. With the ability of processing array data above 200 channels and reaching a frame rate of 20 f/s. This design is suitable for two-dimensional imaging sonar.
Key word：
image sonar
data acquisition
real-time processing
FPGA
View(5674)

Measurement method of synchronization precision for wireless sensor networks based on error mapping

Author：Wang Fuqiang1，2，Wu Xiaoming1，2，Li Gang1，2

Author Affilications：1.Shandong Computer Science Center, Ji′nan 250014，China； 2.Shandong Provincial Key Laboratory of Computer Network, Ji′nan 250014，China

Abstract：The traditional way of time synchronization precision measurement by inquiring methods that require wireless communication resources may affect the normal operation of the system. So a synchronization precision measurement method is designed based on synchronization error mapping. The real time synchronization error is get from monitoring changes of the corresponding node port status through FPGA to avoid the consumption of wireless communication resources. The experimental results show that, compared with the traditional inquiring measurement method, the method can gain more real-time measurement result, and more flexible and convenient use.
Key word：
wireless sensor network
time synchronization
precision measurement
error mapping
View(4718)

Design of data acquisition system based on W5300 and FPGA

Author：Bai Jiajun1，Meng Xiangyong2，Zhang Deping1，Feng Qi1，Yuan Naichang1

Author Affilications：1.School of Electronic Science and Engineering, National University of Defense Technology，Changsha 410073，China； 2.Proving Ground of Jian Hua Company，Qiqihaer 161000，China

Abstract：In order to achieve real-time transmission of data acquisition and remote control, this paper designed and implemented the W5300 and FPGA-based real-time data acquisition system. The system chose W5300 to build a network module and communicated with the remote host computer using TCP protocol to control A/D module which based on AD7357 to acqure data.Both channels of AD7357 can accurately sample signal of 50 Hz~500 kHz at 1.5 MS/s rate and transmit the data to the remote host computer real-timely.
Key word：
W5300
FPGA
AD7357
data acquisition
real-time transport
View(8794)

Research and implementation of VLIW compressing technology based on instruction prefix

Author：Ji Zhongning，Chen Xun，Xu Jinfu，Zhang Peng

Author Affilications：The PLA Information Engineering University, Zhengzhou 450004，China

Abstract：Huge idle rate of instruction slot is a serious problem in VLIW processor. Through analyzing the architecture of special VLIW processor and its typical application, this paper puts forward the instruction prefix compressing technology of VLIW processor. This technology compresses the VLIW instruction words by eliminating the invalid instruction slot operation of every instruction word. At the same time, the decompressing circuit is designed，which decompresses the compressed code. The results show that the technology can save the area of instruction memory by 47.2% at the expense of a little area.
Key word：
special VLIW processor
instruction prefix compressing technology
decompressing circuit
instruction memory
View(4020)

Microprocessor IAP technology based on high frequency RFID

Author：Liu Genxian1，Gong Xuerong2，Sheng Yonghong2，Xing Yong3

Author Affilications：1.Department of Computer Science and Technology, Tsinghua University, Beijing 100084，China； 2.PLA Information Engineering University, Zhengzhou 450004，China； 3.Equipment Research Institute of the Second Artillery, Beijing 100085，China

Abstract：This paper proposes an IAP solution for embedded system based on high-frequency RFID via high-capacity tag. This technology makes sure that system run smoothly no matter the upgrade operation is success or not. The technology is verified on IAP11F62X and STM32F103RC hardware platforms.
Key word：
microprocessor
RFID
IAP
interrupt vector
embedded system
View(7716)

Design of marine collision avoidance system based on FPGA and ARM

Author：Jing Peng，Wang Heming，Wei Wei

Author Affilications：The Missile Institute, Airforce Engineering University，Xi′an 710000，China

Abstract：A marine collision avoidance alarm equipment based on FPGA is designed in the paper. This equipment is generally used on small and medium ships. It could work together with seafaring radar on the ship and constitute a new system with seafaring radar. The marine collision avoidance alarm equipment could collects data of seafaring radar and processes the data so that it achieves the function of targets tracking, target identification and automatic alarming in all hazard levels. As a result, we achieve the goal of adding function of collision avoidance to the seafaring radar and not affecting its primary function.
Key word：
FPGA
ARM
marine collision avoidance
tracking
View(5248)

The monitoring system of recovery efficiency on heat-setting machine′s exhaust heat

Author：Ding Xiaoxiong，Wang Jian，Huang Guohui

Author Affilications：Automation College of Hangzhou Dianzi University，Hangzhou 310018，China

Abstract：At present, the energy consumption of textile industry is getting higher, and the energy efficiency is low. In order to saving energy and reducing consumption, the exhaust heat recovery device on heat setting machine is used. An efficiency monitoring system of this device is designed. The system includes acquisition module and monitoring center. CAN bus is used to construct network for communication, and μC/OS-II is used for task management and interrupt response. The embedded graphics system-UCGUI is used to design user interface，and the high-quality touch screens is used in the user interaction. Experimental testing and field operation show that the system has strong real-time property, fast network response and small environmental influence.
Key word：
heat setting machine
exhaust heat recovery
monitoring system
CAN bus
embedded system
View(18508)

Application of Integrated Circuits

Research and DSP implementation of downlink resource allocation in TDD-LTE system

Author：Li Jianbing，Zhou Yuanyuan，Li Xiaowen

Author Affilications：School of Communication and Information Engineering，Chongqing University of Posts and Telecommunications， Chongqing 400065，China

Abstract：This paper describes the calculation of the virtual resource block and the mapping of the virtual resource blocks to the physical resource blocks. On this basis，one of the available DSP implementation program is put forward. The program simplifies the implementation process,and the algorithm is simple and time-consuming.
Key word：
long term evolution
virtual resource blocks
the mapping of the resource blocks
DSP implementation
View(8928)

Design and simulation of high-performance and reconfigurable pipelined ADC

Author：Chen Zhenyu，Wang Lizhi，Ren Xiaoyue

Author Affilications：School of Science，Air Force Engineering University，Xi′an 710051，China

Abstract：A reconfigurable 14 bit and 100 MS/s pipelined ADC is proposed in this paper. To reduce the influence of non-ideal factors and achieve the design objectives，this paper has improved obviously on the design of some key units including sampling-and-hold circuit，bootstrapped switch，folded cascade amplifier and reconfigurable controller. The paper also discusses the simulation of the key units and the system.
Key word：
communication protocols
reconfigurable pipelined ADC
bootstrapped switch
non-ideal factors
simulation
View(5520)

QR code decoding system based on ADI low-cost DSP

Author：Yu Weike，Li Fuhai

Author Affilications：College of Electrical and Information Engineering, Hunan University，Changsha 410082，China

Abstract：A QR code decoding system which can be implemented on ADI low-cost DSP is designed. The system is based on image processing and implemented on the hardware platform with center processor BF592. The whole system is running within 32 KB data memory, including image capturing and displaying, image storing and thresholding using paralleled timing, QR code detection with multi-direction scanning, sampling and decoding and so on. The experimental result shows the good performance of the system.
Key word：
QR decode
image processing
small-memory
BF592
View(7690)

A temperature sensor circuit for passive UHF RFID transponder of temperature detecting

Author：Kong Lingrong

Author Affilications：Invengo Information Technology Co.，Ltd.，Shenzhen 518057，China

Abstract：An integrated low voltage low power digital temperature sensor circuit with rapid SAR A/D converter for passive RFID temperature detecting applications is presented. The circuit consists of a Vbe voltage of BJT transistor, a PTAT current and a SAR ADC. It avoids the bandgap reference circuit which need the operation voltage higher than 1.5 V and can be run with about 4 μA current when the power supply is above 1 V. The A/D converter time is less than 100 μs in the condition of 80 kHz clock input.
Key word：
temperature sensor
passive RFID
SAR ADC
temperature coefficient
PTAT current
View(17622)

Design of signal generator based on the amplitude modulation of D/A reference voltage

Author：Wang Xiaofei1，Zhang Fujiang1，Li Dong1，He Zhao2

Author Affilications：1.Photoelectric College，Beijing Information Science and Technology University，Beijing 100192，China； 2.National Institude of Metrology P.R.China，Beijing 100013，China

Abstract：Signal generator based on FPGA uses the direct digital synthesis technology. Its signal amplitude is controlled by D/A THS5661. We can control the output of the signal through controlling the reference voltage of D/A. This scheme can realize a variety of signal waveform amplitude adjustment. The adjusting range of signal amplitude is 0~±5 V and the resolution is 0.1 V. Its frequency and phase also can be adjusted.
Key word：
D/A
referece voltage
FPGA
DDS
View(7698)

A radiation-tolerant CMOS image acquisition system

Author：Du Ting，Feng Chang，Wang Congzheng

Author Affilications：Institute of Optics and Electronics，Chinese Academy of Sciences，Chengdu 610209，China

Abstract：Based on the application environment,a high radiation-tolerant CMOS image acquisition system architecture is proposed, which is controlled by the FPGA to coordinate all modules and acquire data in radiation area and display it in safe area. The main description of this paper is the system architecture and software controll. Also, to some of the problems in the system, the solution is proposed.
Key word：
STAR250
radiation-tolerant
FPGA
image acquisiton
View(12924)

Measurement Control Technology and Instruments

Design of multi-channel high-speed data acquisition system based on FPGA

Author：Gan Jianwei, Qin Fujun，Wang Peng

Author Affilications：School of Mechanical Engineering and Automation, Xihua University, Chengdu 610039, China

Abstract：Introduces a data acquisition system based on the FPGA design , by using Cyclone Ⅱ series of EP2C35F484 chip as the master control unit, with the A/D conversion chip ADS7825 and USB transmission control chip CY7C68013, and combined with peripheral circuit realized the acquisition system. Based on the Quartus Ⅱ 9.0 flat, to realize the ADS7825 chip and CY7C68013 chip control and communication, we use the Verilog hardware description language to realize the simulation of the system, and give the system core module timing simulation waveform diagram. By test, the multi-channel analog signal acquisition, has a good stability and rapidity.
Key word：
data acquisition
FPGA
USB2.0
A/D
View(8262)

The design of aviation cell running parameters testing system

Author：Zhao Cheng, Hua Hongyan

Author Affilications：Zhengzhou Institute of Aeronautical Industry & Managment, Zhengzhou 450015, China

Abstract：The study mainly focused on the monitoring and testing of aviation cell’s running parameters, and provided the design structure of software and hardware system. After introducing the key circuit schematics, the study tested system’s running effect by onboard and meter panel display device. The result of study can be used as the design reference for new-type traceable aviation components.
Key word：
aviation
cell
running parameters
testing system
View(5276)

Near field detection core technology for UHF RFID tag conformity

Author：Tong Tingyang， Ma Zhenzhou

Author Affilications：Aisino Corporation Inc., Beijing 100195, China

Abstract：The conformity of UHF RFID tags directly affects the recognition rate and accurate rate of data acquisition in a RFID system. We used the RSSI (Received Signal Strength Indicator) technique and mathematical statistics to collect reflected signal strength of tags and set the standard deviation threshold as parameters for tag conformity detection. We also developed the bending dipole near field antenna to read RFID tags in 0.1 mm distance. Using shielding effect, we set a dotting identification device on full automatic reel-type RFID tag sets and marked them in batch to achieve high speed conformity detection of flexible UHF RFID tags.
Key word：
RFID tag conformity
UHF near field
RSSI
UHF RFID detection
View(6962)

Design and implementation of multiple meter reading system based on DSP

Author：Yuan Weiqi， Yang Yang

Author Affilications：Visual Ispection Technology Institute, Shenyang University of Technology, Shenyang 110870, China

Abstract：A kind of multiple recognition system for the water meter’s reading based on DSP is put forward. A design and a implementation of the main functional modules of this system are given. The system belongs to the mode of passive remote meter reading. Using the embedded technology and visual inspection technology, the system collectes the picture of water meter’s numbers and recognizes them, then displaies and transfers the readings of multiple water meters. Experiments show that the system has characteristics of lower cost, high speed, safety, energy saving and stability. It can recognize the readings of water meter accurately.
Key word：
water meter
number recognition
machine vision
DSP
View(7364)

A kind of telemetry data real-time compression system

Author：Leng Jiapeng， Liu Wenyi

Author Affilications：1. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China; 2. Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, Taiyuan 030051, China

Abstract：A kind of telemetry data real-time compression system is introduced, this design with FPGA + DSP for hardware architecture, with first-order difference prediction ARC coding for lossless, the system achieve high compression removal efficiency and faster compression speed, it’s suitable for high reliability requirements telemetry system. The results of experiment show that the lossless compression system effectively alleviates the transmission bandwidth pressure of telemetry system.
Key word：
telemetry
data compression
first-order difference prediction
ARC coding
View(7138)

Design of new EEG acquisition front-end based on the ADS1298

Author：Xie Hong, Yan Lin, Yao Nan, Xia Bin, Dong Yangyang

Author Affilications：Institute of Information Engineering, Shanghai Maritime University, Shanghai 201306, China

Abstract：In this paper, a chip based on a TI company’s highly integrated ADS1298 dedicated to handling biological signals, combined with high-precision analog-to-digital conversion and digital noise reduction processing technology to simplify the design of the signal conditioning hardware circuit, the use of chip integrates right leg drive module design the right leg drive signal circuit to achieve a high accuracy、small in size、low power multi-channel EEG acquisition front-end, and discuss more channel EEG acquisition of multi-chip cascade technology can be widely used in portable multi-channel EEG acquisition equipment.
Key word：
Electroencephalogram(EEG)
ADC
portable type
low-power
driven right leg(RLD)
View(16862)

Application of FPGA in pressure measuring system with temperature compensation

Author：Zhang Hongtao, Xue Junxiao

Author Affilications：Zhengzhou University, Zhengzhou 450002, China

Abstract：From the analysis of the characteristics of FPGA processor, This paper introduces the structure of pressure measurement system with temperature compensation design based on the FPGA, discusses in detail the FPGA processor design of the functional part of the internal design structure, work flow and compensation algorithm analysis and design in the pressure measurement system，finally the system test results validate the design on FPGA in pressure measurement system with temperature compensation is feasible and effective. Because FPGA processors has the high reliability, strong data processing ability, speed and so on, effectively improved the general pressure measurement system accuracy is low, the processing speed is slow, lack of real time problem.
Key word：
FPGA
temperature compensation
measurement system
pressure sensor compensating algorithm
View(15958)

Communication and Network

FastICA-based super resolution multipath time delay estimation algorithm

Author：Zhao Weibo, Hu Hanying, Zhou You, Qi Fei

Author Affilications：Institute of Information, PLA Information Engineering University, Zhengzhou 450002, China

Abstract：Aming at improving the performance in low SNR environment of super resolution time delay estimation(TDE) in high precision wireless position location, this paper peoposed a multipath TDE algorithm based on FastICA. By modifying the whitening matrix with noise subspace and applying constraint to initial unmixing matrix in FastICA with reference signal, the algorithm reduced the complexity to converge to the expected FAP component. Finally, the time of arrival(TOA) of FAP could be achieved with reference signal. Simulation results showed the improvement on TDE performance compared with current super resolution algorithms in low SNR environment.
Key word：
wireless position location
multipath time delay estimation
FastICA
super resolution
View(6972)

Spectrum sensing based on akaike information criteria

Author：Zhao Youxuan, Zhu Shilei, Hu Hanying

Author Affilications：Institute of Information Engineering, PLA Information Engineering University, Zhengzhou 450002, China

Abstract：Spectrum sensing is a prerequisite for cognitive radio communication, since the traditional algorithm of energy detection using single antenna is vulnerable to noise, this paper proposed a spectrum sensing algorithm based on Information theory which combines the spatial processing ability of MIMO system. This algorithm first detects the channel in real time to obtain the covariance matrix of signal, and then determines whether the primary user exists by using AIC. The proposed one doesn’t require the power of noise or a determined threshold. The simulation results indicated that this algorithm increases the detection probability and is robust with uncertainty of noise compared with the algorithm of energy detection.
Key word：
cognitive radio
spectrum sensing
akaike information criteria
uncertainty of noise
View(7262)

Adaptive throughput optimization for wireless sensor networks based on RSSI

Author：Ding Fan, Zhou Yongming

Author Affilications：School of Physics and Mechanical & Electrical Engineering ,Shaoguan College, Shaoguan 512005, China

Abstract：The throughput model for ARQ and FEC are presented based on the MicaZ node.By analyzing the various parameters on throughput,the optimal frame length of ARQ and the optimal FEC parameters are derived.Then,an adaptive throughput optimaization strategy based on RSSI is proposed,which can adapt to the dynamic changes of network topology in WSN. In the strategy, the range measurement technology called RSSI is used to measure the communication distance between nodes,and the throughput is improved by adapting the error control strategy .The simulation results show that the performance of this scheme outperforms the individual ARQ or FEC technique in terms of throughput and dynamic range.
Key word：
wireless sensor networks
RSSI
throughput
adptive
View(8106)

Nodes deployment algorithm based on balance distance of wireless sensor network

Author：Li Qiangyi1,2, Ma Dongqian2, Zhang Juwei1,2

Author Affilications：1. Electronic Information Engineering College, Henan University of Science and Technology, Henan 471023, China; 2. Science and Technology on Electro-optic Control Laboratory, Henan 471009, China

Abstract：This paper presents a node movement scheme aiming at the wireless sensor network nodes which are randomly deployed. The node movement is divided into several processes, in each movement process according to the balance distance and location relations move nodes to separate the aggregate nodes and achieve the maximum coverage of the monitoring area. Because of gradually increasing the balance distance between nodes, in each movement process the nodes moving distance is small and reduce the sum of the nodes movement distance. The simulation result shows this algorithm ensures the effect of coverage on the basis of reducing sum of the nodes movement distance.
Key word：
wireless sensor network
nodes deployment algorithm
balance distance
View(3456)

Parallel baseband process architecture for wireless USB

Author：Yang Runfeng1, Li Mingzhao2

Author Affilications：1. Deptartment of Electronic Engineering, Dongguan Polytechnic, Dongguan 523808, China； 2. China Electronics Corporation, Beijing 100846, China

Abstract：Wireless USB system is implemented in UWB radio platform based on multi-band orthogonal frequency division multiplexing(MB-OFDM). However the system hardware implementations usually need high clock rates, hence requiring more silicon and power, which results in higher cost for the device. This paper presents a parallel baseband architecture aided to reduce the clock rate twice and accomplish the OFDM baseband process with correct timing, which offers wireless USB system performance on 480 Mb/s and 4 meters simulated in UWB channels.
Key word：
wireless USB
MB-OFDM
baseband
View(4766)

Application of power-saving network discovery in human interaction

Author：Lou Yangping, Zhang Guohong

Author Affilications：College of Electronic Engineering， Zhejiang University，Hangzhou 310027，China

Abstract：Human in teraction network is designed based on the characteristics of human interaction. This paper pays a special attention to power consumption of devices. Using the superframe structure of IEEE802.15.4, we propose a power-saving network finding algorithm by change the parameters of superframe.The relations among energy consumption, timing constraint is discussed. At last,a ecard exchange application is developed in order to test the feasibility of network finding algorithm
Key word：
power-saving network discovery
human interactive
superframe structure
View(2800)

Constant envelope modulation based on interplex in LEO satellite communication system

Author：Chen Yijun1,2, Qi Zhuangping2, Jiang Quanjiang2, Liang Xuwen1,2

Author Affilications：1. Shanghai Institute of Microsystem and Information Technology，Chinese Academy of Sciences， Shanghai 200050，China； 2. Shanghai Enginerring Center for Microsatellites， Shanghai 201203，China

Abstract：In case of LEO satellite spread spectrum communication system, the number of signals is variable on the same channel. Interplex will be studied in this paper. Based on the above study, the relationship of modulation efficiency, PAPR and power ratio are obtained. The appropriate choice of power radio is obtained in case of three signals or four signals multiplexing. The study of this paper has an important guiding significance for constant envelope combined methodologies in LEO satellite spread spectrum communication system．
Key word：
constant envelope
interplex
modulation efficiency
PAPR
power ratio
View(15300)

Computer Technology and Its Applications

A harmonic detection algorithm study based on wavelet network inverse-transform

Author：Tang Hongyu1， Chen Xun2

Author Affilications：1. Department of Electric and Information, Zhenjiang College， Zhenjiang 212003, China； 2. School of Electric and Information， Jiangsu University of Science and Technology， Zhenjiang 212003, China

Abstract：In this paper, a wavelet network inverse-transform is designed. Odd and even extraction of high-frequency and low-frequency band signal are extracted the signal by wavelet decomposition. It trains and approaches wavelet signal by BP neural network. Then it reconstructs signal by wavelet inverse-transform. We can get harmonic wave by subtracting the reconstructed signal from the original,which are inverted into the power grid to compensate. Experiments show that the algorithm can satisfy the requirements of the system harmonic detection.
Key word：
harmonic wave
inverse transform
neural network
detection algorithm
View(4760)

Fast mode decision algorithm based on H.264

Author：Wu Guiqing, Chen Yanfang, Li Zhenwu

Author Affilications：College of Electrical and Information Engineering,Hunan University, Changsha 410082, China

Abstract：With the problem of high computation complexity in mode dicision pattern of H.264 video compression,a real-time fast mode decision algorithm was poposed. Firstly, the method formulated class decision metrics, divided MB class based on Pareto-optimal macroblock(MB) classification scheme; Then, the method detected the motion activity of macroblocks,selected mode which with low rate-distortion cost for current macroblock,made mode dicision in advance and got the best mode.Compared with the reference coder, experimental results show that the proposed algorithm can achieve a reduction of 64.28% encoding time on average,with a negligible average 0.09% bit rate increasing and a PSNR(Peak Signal to Noise Ratio) loss of 0.19 dB.
Key word：
H.264 coding standard
complexity
Pareto-optimal
fast mode decision
View(4616)

Study of pedicle screw implantation navigation system based on bioelectric-impedance method

Author：Zhong Shenghe1, Zhu Hao1, Guo Jinsong1, Liang Feixue1, Xu Junjie2, Wang Zhiyun2

Author Affilications：1. Institute of Bioinformatics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China; 2. Orthopedic Hospital of Guangzhou General Hospital of Guangzhou Military Area, Guangzhou 510010, China

Abstract：Introduce a method based on impedance measurement of pedicle screw implantation operation navigation system. The development of navigation system in experimental pigs 6 vertebrae conducted a preliminary experiment, the correlation of bioelectrical impedance experimental data show that: the navigation system can real-time, accurate response to insertion of the electrode to bone tissue of different parts of the body, which is expected in clinical vertebral pedicle screw implantation operation plays a role in navigation.
Key word：
bioelectrical impedance
pedicle screw implantation surgery
MSP430F1612
direct digital synthesis technology
View(7142)

Design of high definition electronic police based on CAN bus

Author：Jin Senyuan， Wang Haien， Fang Xingfu

Author Affilications：Shanghai Baokang Electronic Control Engineering Co.,Ltd., Shanghai 201901, China

Abstract：This article introduces the design of high definition camera electronic police based on CAN bus. It also introduces the software architecture, shutter exposure algorithm and the use of polarizer. CAN bus improved the reliability, expandability of electronic police. With the adaptive algorithm of camera shutter and use of polarizer,the system can capture high quality picture at different illumination condition.
Key word：
electronic police
CAN bus
high definition camera
View(23068)

Research on demonstration system design based on WiFi and somatosensory interaction

Author：Liu Yang

Author Affilications：School of Information, Zhejiang University of Science and Technology, Hangzhou 310023, China

Abstract：This research captured gesture command based on three axis gyro which built intelligent portable terminal system, and the adaptive template matching method is used for gesture recognition. The identification efficiency is improved when keeping the recognition rate. Taking Wi-Fi network as the carrier of information transmission, the gesture command is transmitted to the server to control the presentation slide show. Based on WiFi and somatosensory interaction demonstration, it can overcome problems of traditional USB laser pen, such as operation mode single, receiving distance limited and so on, meanwhile it can provide a better user experience.
Key word：
somatosensory interaction
WiFi
gesture recognition
View(10866)

Website evaluation criteria based on queue model

Author：Zhou Yu, Du Qingzhi, Shao Yubin, Long Hua, Liu Haiyang

Author Affilications：Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500,China

Abstract：In the system of website evaluation system, regard user experience as a criterion of evaluation. Introduce the concept of information entropy in information theory, calculate the residence time of an user group in the website using queuing theory, and then give a new evaluation criteria for the website efficiency .
Key word：
queue model
residence time
website evaluation
quantitative model
View(3526)

Fast intra mode decision algorithm for H.264 scalable video coding

Author：Yang Kai1，Liu Shigui2，Yu Hongyang1

Author Affilications：1. Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China; 2. China Central Satellite Television Transmission Center, Beijing 100083, China

Abstract：This paper proposes a new fast intra mode decision algorithm for SVC enhancement layer(EL). Firstly, we simplify EL intra layer prediction based on the statistical mode distribution of BL and EL. Then we further propose a new algorithm that can optimize SVC INTRA_BL mode decision process. Experimental results demonstrate that proposed algorithm can reduce the total encoding time by up to 59.6% with negligible bit rate increase and loss of PSNR.
Key word：
scalable video coding
fast mode decision
Inter-layer intra prediction
View(12858)

Information Security

RFID security mechanism based on Grain-128a

Author：Zhao Lianqing, Chen Yuanxun, Duan Xiaomeng

Author Affilications：Department of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

Abstract：Security and cost are the reasons that block RFID from being promoted. It is a really challenging subject for designing a secure and efficient solution to balance the contradiction of security and cost of RFID tag. This paper discusses the characteristics of RFID system, introduces the process of mutual authentication protocol and analyzes its security performance. Based on those analyses, we propose the security mechanism applying mutual authentication protocol with Grain-128a algorithm and describe the detailed implementation of Grain-128a on FPGA.
Key word：
Grain-128a
RFID
mutual-authentication protocol
FPGA
View(7512)

Survey of secure cloud storage

Author：Liang Zhiyin1,2, Duan Lei1, Wei Tao1,2, Du Jun3, Zheng Chi4

Author Affilications：1. Peking University, Beijing 100871, China; 2. UC Berkeley, CA 94720, USA; 3. Perabytes System Co., Ltd., Beijing 100089, China; 4. Beijing Teamsun Technology Co., Ltd., Beijing 100085, China

Abstract：Security challenges are classfied into 5 categories(3 for consumers, 2 for operators), and describe them based on the latest research results. Analysis shows that security technologies for cloud storage are related to various areas and there are high threats in this area. While some good results have been generated by researchers, there are still many problems to be solved.
Key word：
Could computing
cloud storage
network security
View(5708)

A multi-level cloud platform security solution

Author：Dong Zhenjiang1, Wang Xue2, Hu Jie1, Hua Yu2

Author Affilications：1. ZTE Corporation， Nanjing 210012, China; 2. Beijing University of Posts and Telecommunications, Beijing 100876, China

Abstract：This solution is divided into several levels, which are container-level security, virtual machine-level security, network-level security. This paper focuses on solutions for PaaS Cloud platform, and makes the analysis of three aspects, which are the application security inside of the container, the container’s own security, the intrusion prevention security outside of the container.
Key word：
Cloud computing
security
PaaS
container security
View(6154)

A Java source-code SQL injection attack detection algorithm based on static analysis

Author：Chen Feng, Yu Yun

Author Affilications：China Sourthern Power Grid Co., Ltd, Guangzhou 510623, China

Abstract：This paper researches the method of SQL injection attack detection and the principle of static analysis scanning, and presents a Java source-code SQL injection attack detection algorithm. The detection algorithm includes these steps: lexical analysis of source code, parsing of source code, constructing abstract syntax tree of source code, defining rules, abstract syntax tree traversal, tracking problems, detecting possible paths of SQL injection attack etc. Test results show that the proposed detection algorithm performs perfectly and has higher recognition rate.
Key word：
static analysis
SQL injection attack
abstract syntax tree
View(11846)

Special Column

Key Technologies of 5G and Its Evolution

Key Technologies of 5G and Its Evolution

High Performance Computing

Processing and Application of Marine Target Characteristic Data

Smart Power

Antenna Technology and Its Applications

Smart Agriculture

5G-Advanced and 6G

5G Vertical Industry Application

Microelectronics in Medical and Healthcare

Key Technologies for 6G

Application of Edge Computing in IIoT

Deep Learning and Image Recognization

6G Microwave Millimeter-wave Technology

Radar Processing Technology and Evaluation

Space-Ground Integrated Technology

Industrial Ethernet Network

5G Vertical Industry Application

High Performance Computing

Innovation and Application of PKS System

FPGA and Artificial Intelligence

5G Network Construction and Optimization

RF and Microwave

Edge Computing

Network and Business Requirements for 6G

5G and Intelligent Transportation

5G R16 Core Network Evolution Technology

Satellite Nevigation Technology

5G R16 Evolution Technology

5G Wireless Network Evolution Technology

5G Network Planning Technology

5G Indoor Coverage Technology

5G MEC and Its Applications

5G Co-construction and Sharing Technology

Expert Forum

5G and Emergency Communication

5G Slicing Technology and Its Applications

Industrial Internet

5G Terminal Key Realization Technology

5G and Artificial Intelligence

5G and Internet of Vehicles

Terahertz Technology and Its Application

Signal and Information Processing

Artificial Intelligence

5G Communication

Internet of Things and the Industrial Big Data

Electronic Techniques of UAV System

Power Electronic Technology

Medical Electronics

Aerospace Electronic Technology

Robot and Industrial Automation

ADAS Technique and Its Implementation

Heterogeneous Computing

2016 IEEE International Conference on Integrated Circuits and Microsystems

ARINC859 Bus Technology

FC Network Technology

Measurement and Control Technology of Bus Network

GJB288A Bus

Key Techniques of 5G and Algorthm Implement

IEEE-1394 Bus

Signal Conditioning Technology of Sensors

AFDX Network Technology

Discrete Signal Processing

Energy-Efficient Computing

Motor control

2012 Altera Electronic Design Article Contest

WeChat shop

License policy