2015 No. 01-Application of Electronic Technique

Review and Comment

A comparative study on the three competitive force models of electronic information industry chain

DOI：10.16157/j.cnki.0258-7998.2014120102014

Author：Liu Liehong，Chen Zhiya

Author Affilications：Central South University，Changsha 410083，China

Abstract：The continuous refinement of industrial division of labor and the rapid development of Internet technology have given rise to the three competitive force models of electronic information industry chain, which respectively are the whole industry chain competitive force model, the platform industry chain competitive force model and the alliance industry chain competitive force model of electronic information. The three models show distinctive differences and characteristics in the respects of organization model, formation mechanism, value basis, general model, and so on.

Key word：
electronic information industry chain

competitive force model

organization model

formation mechanism

value basis

comparative study

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Development of new lead-free solders

DOI：10.16157/j.cnki.0258-7998.2014100803605

Author：Zhang Liang1，2，Sun Lei1，Guo Yonghuan1，He Chengwen1

Author Affilications：1.School of Mechanical and Electrical Engineering, Jiangsu Normal University，Xuzhou 221116，China； 2.Provincial Key Laboratory of Advanced Welding Technology，Jiangsu University of Science and Technology，Zhenjiang 212003，China

Abstract：With the development of electric industry, the investigation of lead-free Sn-based solders have become the more important aspect in the field of electric materials. For the study, two ways such as alloying and particles strengthen can be utilized to research the new solders. In recent years, lots of works can be found in the world, these new lead-free solders represent obvious single property or comprehensive properties. However, comparing with traditional SnPb solders, the systematical data of new lead-free solders is not enough, so the further study should be done to provide new data for series solders, which can be provided for data support.

Key word：
lead-free solders

alloying

particles strengthen

data support

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The situation and development tendency of mobile positioning technology

DOI：10.16157/j.cnki.0258-7998.2014102903890

Author：Cao Yongsheng1，Liang Shengxiang1，Xie Guanheng2，Zheng Xiyan1，Zhao Shujun1

Author Affilications：1.School of Physical Engineering, Zhengzhou University，Zhengzhou 450001，China； 2.Zhengzhou Guangli Tech.Development Co.，LTD，Zhengzhou 450001，China

Abstract： Location Based Service brings the great convenience to people for their daily life, and promotes the great development of mobile positioning. In accordance with mobile positioning technology, the strengths and weaknesses of orthodox positioning technology are analyzed.

Key word：
cellular network

WLAN

WSN

mobile terminal

GPS

BDS

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Embedded Technology

Research and implementation of fault injections under Simics environment

DOI：10.16157/j.cnki.0258-7998.2014083003171

Author：Han Deqiang，Feng Yunhe，Wang Zongxia，Gao Xueyuan

Author Affilications：College of Computer，Beijing University of Technology，Beijing 100124，China

Abstract： This paper discusses the research of the VxWorks embedded operating system′s serial port fault injection and network fault injection under Simics full system simulation environment. Simics enables developers to customize processors, memory, board-level hardware and complex network systems and any-size hardware target device models based on their needs. The underlying software, middle-layer software and upper-layer software running on real hardware target devices can run on Simics target hardware device models without any modification. Therefore, Simics not only enables hardware-level fault injection simulation, but also can fully detect the operating state of the software.

Key word：
full system simulation environment

Simics

VxWorks embedded operating system

fault injection

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Design of video transmission system based on DaVinci technology

DOI：10.16157/j.cnki.0258-7998.2014090703263

Author：Deng Na，Tian Zengshan，Yuan Zhengwu

Author Affilications：Institute of Wireless Location and Space Measurement，Chongqing University of Posts and Telecommunications， Chongqing 400065，China

Abstract：Combined with practical application and development trends of multimedia technology, a set of multi-channel video surveillance system is designed with TMS320DM6467 and embedded Linux software. The system adopts TVP5158 to realize the video signal acquisition of 4 channels, through DaVinci technology to realize the 4 channels real-time video compression based on H.264. Then the data is sent to the monitoring center through a local network with UDP protocol. The user can monitor the region by controlling the monitoring center software. System is implemented on a single chip with low-cost and high-performance features, it can be used in transportation, factory security, smart home monitoring, video conferencing and so on.

Key word：
DaVinci

H.264

video surveillance system

DM6467

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Design of a dual-axis tracking system based on IAP15F2K61S2

DOI：10.16157/j.cnki.0258-7998.2014091103312

Author：Chen Lidan1，2，Yang Zhongyin1，Gong Qiaowen1

Author Affilications：1．Electrical Engineering Department，Guangzhou College of South China University of Technology，Guangzhou 510800，China； 2.School of Electric Power，South China University of Technology，Guangzhou 510640，China

Abstract：To improve the efficiency of solar panels′ utilization, a novel intelligent solar power system which can automatically track the solar trajectory in all directions is designed. This system is controlled by the smallest single chip microcomputer. The solar panels′ position data can be stored before sudden power-down when the system encounters unexpected failure and solar panels also can be manually or automatically reset. The system can continue to run in rainy weather by automatically switching back to the main power grid supply. Real-time information including solar power system voltage, current, temperature and deflection angle can be monitored by users with PC display interface. Dust removing and cooling system is designed to reduce the temperature effect on the power efficiency of solar panels and the dust attached to solar panels. The test results show that this system is stable, reliable and will have a good prospect of application.

Key word：
solar power

automatic tracking

IAP15F2K61S2

dual-axis tracking system

“3+1” quadrants sensor

dust removing and cooling system

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A high precision automotive grade detector

DOI：10.16157/j.cnki.0258-7998.2014101303688

Author：Fu Liangrui1，Jiang Shen2，Wang Zhiwei2，Chen Zhijun1，Zhang Jijun1

Author Affilications：1.Northwest Institute of Nuclear Technology，Xi′an 710024，China； 2.Xi′an Jiaotong University，Xi′an 710049，China

Abstract：This paper presented a design and implementation scheme of high-precision automotive road gradient detector to improve the existing vehicle slope detection technique. It was composed of a master node and multiple detection nodes. The detection node obtained the tilt angle with the ground by the triaxial acceleration sensor, and then sent the angle value to the master node, which collected data of all the detection nodes and realized the data fusion algorithm to obtain the optimal slope value. The feasibility of the scheme is verified by simulations and experiments, which show that the scheme can be widely used in car navigation systems.

Key word：
automotive road gradient detector

multi-sensor information fusion

fieldbus network

embedded system

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Design and implementation of light-compensating system on IR dome camera

DOI：10.16157/j.cnki.0258-7998.2014081903019

Author：Wang Xuying，Deng Weiyan，Zhang Fei，Han Peng

Author Affilications：College of Mechanical and Electrical Engineering，China Jiliang University，Hangzhou 310018，China

Abstract：To solve the problem which widely found in current infrared dome camera，such as serious heating of infrared lamp board, center overexposure when to collect images closely，and so on, building a hardware circuit through using an STM32F103 as master chip and PT4115 as infrared lamp dimming chip，we design a new infrared dome camera light-compensating system based on a algorithm of the infrared lamp brightness matching lens ratio, and realize the intelligent PWM dimming of several series of infrared lamp on the infrared lamp board. Through the experiment，it proves that this design can effectively save power consumption, reduce the generated heat, and improve the stability of infrared lamp board, so as to improve the night vision surveillance effect of infrared dome camera.

Key word：
infrared dome camera

STM32

PT4115

light-compensating system

PWM

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Design of continuous non-invasive blood pressure measurement system based on PTT

DOI：10.16157/j.cnki.0258-7998.2014090303227

Author：Zhang Yuan，Wu Shuyu，Zhou Linghong

Author Affilications：School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China

Abstract： For the discontinuities and discomfort of the traditional cuff blood pressure measurement system,a continuous non-invasive blood pressure measurement system based on Pulse Transmit Time(PTT) is designed and implemented. The system is consisted of STM32 as its core, Bluetooth, Electrocardiograph(ECG) and Photoplenthysmogram(PPG). The traditional cuff is replaced by two ECG electrode holders and a finger-cot. An apparatus for the continuous and non-invasive measurement is developed with simple construction, small size and easy operation. Additionally, physiological data can be wirelessly transmitted by the integrated Bluetooth module.

Key word：
continuous non-invasive blood pressure

pulse transmit time

electrocardiograph

photoplenthysmogram

Bluetooth

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Microelectronic Technology

A parallel bit coprocessor for LTE-A wideband communication

DOI：10.16157/j.cnki.0258-7998.2014062902390

Author：Guan Wu，Liang Liping，Hu Qiaozhi

Author Affilications：Institute of Microelectronics of Chinese Academy of Sciences，Beijing 100029，China

Abstract： In this paper，a parallel bit coprocessor for LTE-A widebande communications is presented. It can finish the bit processing for 2G/3G/LTE/LTE-A communications including a CRC checker, a channel codec and a bit interleaver, with 600 Mb/s thoughputs. Realized as a configrable coprocessor, it allows high-thoughput bit-processing for a vast number of different communication standards with just one single IPcore. Implemented in 65 nm technology, it results in a bit processing throughput of 600 Mb/s for LTE-A systems, at 510 MHz for an area of 1.9 mm×2.1 mm.

Key word：
LTE-A

CRC checker

convolutional codes

Turbo codes

interleaver

parallel bit processing

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Custom LTE baseband chip in 230 MHz power band

DOI：10.16157/j.cnki.0258-7998.2014101803757

Author：Wang Yubo，Zhang Shuhua，Zhao Dongyan

Author Affilications：Beijing NARI SmartChip Microelectronics Company Limited，Beijing 100192，China

Abstract：Aimming at 230 MHz wireless power comunication network can not use telecom LTE baseband chip , the custom baseband chip is designed. The article introduces the design method of the baseband chip, and lists the key technology. This chip has been measured, both of the performance and power consumption reach the requirements of industrialization.

Key word：
smart grid

wireless communication

LTE230

TD-LTE

electricity communication

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Real-time filtering method for low cost MEMS gyroscope

DOI：10.16157/j.cnki.0258-7998.2014070102429

Author：Wang Liyang1，Zhai Kunpeng2，He Wentao2，Ma Chengyan2

Author Affilications：1.University of Chinese Academy of Science，Beijing 100049，China； 2.Institute of Microelectronics of Chinese Academy of Sciences，Beijing 100029，China

Abstract： In this work, we aimed to find a general method suitable for coping in low cost Micro Electro Mechanical Systems(MEMS) gyroscope. First, Allan variance was utilized to analyze the drift error of MEMS gyroscope. According to its characteristic, we designed a real-time average estimate algorithm to eliminate gross error. Then, the least square algorithm was applied to extrapolate the predicted value of next step through the previous output values. Based on the aforementioned works, we finally worked out a Kalman filter which efficiently reduced angle random walk and variance of output. This method can be applied to most of low cost MEMS gyroscope because the least square algorithm avoided the problem of being difficult to accurately model drift error. Testing results demonstrate that this method is available both in static and angular rate variation situations. After filtering, quite a bit of improvement is obtained: part of constant drift rate was compensated; raw measurement variance is reduced by more than 99 percent; random walk also has been effectively removed from random drift error.

Key word：
MEMS gyroscope

Allan variance

gross error

least squares

Kalman filter

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Measurement Control Technology and Instruments

Design and implementation of the SCPI command transformation for embedded LXI agent module

DOI：10.16157/j.cnki.0258-7998.2014082003038

Author：Qian Lu，Li Zhe，Yang Fang

Author Affilications：School of Electronic Engineering, Xi′an University of Posts and Telecommunications，Xi′an 710061，China

Abstract： In order to make the non-LXI instrumentation interface instrument access to the instrumentation system of supporting LXI standard, and simultaneously also apply the standard programmable instruments command to manage equipment and device uniformly,a method of SCPI command conversion based on embedded LXI agent module is proposed. By means of capturing the datagram of USB, verifying the USB host-driven programming is successful.And through sending the query and control commands from the host computer,we can achieve the LXI interface specification,and implement the conversion between the SCPI commands and the manufacturers custom commands.

Key word：
LXI

instrumentation

SCPI command

command conversion

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A high-precision programmable digital pulse generator based on CPLD and DS1020

DOI：10.16157/j.cnki.0258-7998.2014082703129

Author：Zhong Changsheng，Wang Yizun，Gao Hui

Author Affilications：National Synchrotron Radiation Laboratory，University of Science and Technology of China，Hefei 230029，China

Abstract： This article discussed a small multichannel timing system, and developed a new high-precision programmable digital delay/pulse generator. The desired pulse was generated through a complex programmable logic device(CPLD) and programmable digital line(DS1020), using a MCU(ATmega8) as the main micro-controller, and the timing errors was discussed. With the resolution of delay being 0.15 ns and resolution of pulse being 10 ns, this machine could generate 7 pulse outputs and could be configured to work in cascade mode by external triggering.

Key word：
programmable logic device

programmable delay line

pulse generator

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Error correction of fuzzy adaptive PID algorithm for trajectory tracking control of serial robot

DOI：10.16157/j.cnki.0258-7998.2014072302730

Author：He Jianli1，Zhu Longying2，Cheng Lei1，Zheng Shuai3，Lu Baofa4

Author Affilications：1.School of Mechanical Engineering，Changzhou University, Changzhou 213164，China； 2.School of Automotive Engineering，Yancheng Institute of Technology, Yancheng 224001，China； 3.School of Mechanical Engineering，Anhui University of Science And Technology, Huainan 232001，China； 4.School of Mechanical Engineering，Jiangsu University,Zhenjiang 212013，China

Abstract： This paper proposed a trajectory tracking control strategy of serial robot based on RBF neural network optimized PID control algorithm. The adaptive learning mechanism neural network and self adjusting ability in the RBF were applied to traditional PID control algorithm. The optimal parameters of the PID control algorithm was selected. Compared with traditional PID control algorithm, the simulation experiments showed that the proposed optimized PID control algorithm based on RBF neural network in series robot trajectory tracking control strategy had smaller error and higher accuracy.

Key word：
PID control algorithm

RBF neural network

error correction

series robot

trajectory tracking control

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Design of the electrical control system for multi-wire saw based on industrial personal computer

DOI：10.16157/j.cnki.0258-7998.2014081002908

Author：Lin Junhuan1，2，Jin Jianhua1，Zhang Jinlei3，Lin Haibo1

Author Affilications：1.Department of Mechanical and Electric，Taizhou Vocational Technical College, Taizhou 318000，China； 2.Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo 315211，China； 3.Ningbo Haitian Plastics Machinery Group Co., Ltd，Ningbo 315801，China

Abstract： A designing method of the electrical control system for multi-wire saw based on industrial personal computer was proposed. The I/O card circuit based on PCI bus was designed, including servo motor impulse signal circuit, strain signal processing circuit, PCI bus interface circuit, etc. And the interactive operation interface and PID controller algorithm are completed. Finally, tests are performed on the multi-wire saw SJQ-380, and the results show that when the line speed is 600 m/min and line strain is 30 N, the constant strain control performance is better than the traditional PLC control system.

Key word：
multi-wire saw

industrial personal computer

control system

PCI bus

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Design of low rectangle coefficient and program-controlled narrow-band filter in NMR advanced detection

DOI：10.16157/j.cnki.0258-7998.2014082203067

Author：Wang Yingji，Ma Zhongkai，Zhang Tao

Author Affilications：Lab.of Geo-Exploration and Instrumentation Ministry of Education of China, College of Instrumentation and Electrical Engineering， Jilin University，Changchun 130061，China

Abstract： Nuclear Magnetic Resonance(NMR) water seking instrument has been successfully developed and widely applied. Power frequency and its harmonic frequency appear in NMR signal frequency range, which causes larger interference in signal acquisition. Referencing to the design train of jagged filter, using combination of switch capacitance and high precision numerical control potentiometer，a narrow band filter is designed，whose center frequency and band width are controllable. It′s effective in reducing the rectangular coefficient of the filter, and implements the continuous adjustments of Q value. The NMR amplifier has good selectivity, strong ability to detect weak signal and can be adjusted flexibly, finely and intelligently.

Key word：
NMR

filter

low rectangular coefficient

frequency continuous adjustable

Q value

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High-speed time-interleaved sampling system based on FPGA

DOI：10.16157/j.cnki.0258-7998.2014081502980

Author：Yi Min，Su Shujing，Ji Wei，Lei Chaoqun

Author Affilications：National Key Laboratory of the Electronic Measurement Technology，North University of China，Taiyuan 030051，China

Abstract：This paper proposes a design of a high-speed high-precision data acquisition systems. The implementation of ADC high-speed sampling is based on time-interleaved sampling structure, with FPGA as the logic control chip and DSP as the algorithm processing center of error correction. On the basis of a description of the design of the overall system and each module, this paper focuses on analyzing the offset error, delay error and gain error of the system, and describes an error correction method. Through experimental tests, the results show that the design can achieve high-speed sampling of 1 GS/s, and can complete effective error correction.

Key word：
time-interleaved

FPGA

error correction

high-speed sampling

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Design of angle limit system of a business jet aircraft and flying qualities evaluation

DOI：10.16157/j.cnki.0258-7998.2014082703127

Author：Li Pengpeng，Gong Huajun，Yuan Suozhong，Shao Minmin

Author Affilications：College of Automation Engineering, Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Abstract： A longitudinal control augmentation control system based on the C?鄢 response was designed. For the flight safety,angle of attack limiter was designed by using the closed loop control method,and the compatibility problem of the modal between angle limit system and control augmentation system was studied,smooth transition of the model was realized. Finally, the flying qualities were evaluated,system digital simulation results demonstrated the effectiveness of a limit on the angle of attack.

Key word：
control augmentation system

limiter for attack angle

flying qualities

business jet aircraft

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Automatic parameters selection based on-demand scalable address assignment algorithm

DOI：10.16157/j.cnki.0258-7998.2014061402147

Author：Zhou Lin1，Zhu Mafeng1，Liu Zhichen2

Author Affilications：1.Institute of Communication Software, Chongqing University of Posts and Telecommunications，Chongqing 400065，China； 2.Institute of Computing Technology，Chinese Academy of Sciences，Beijing 100083，China

Abstract：An automatic parameters selection based on-demand scalable address assignment algorithm was proposed in this paper. The 16 bit address space is divided into some blocks according to the values defined by DAAM. Different parameters are used and the address space is extend once or more according the network condition. Meanwhile, the improved routing protocol was compatible with the cluster-tree protocol. In the end, it is proved that the proposed algorithm performs better than DAAM, EDAA-BA and RBAC in the aspects of the success rate of address assignment, the average hop count and etc.

Key word：
address assignment

automatic parameters

address extension

routing protocol

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Performance of spread spectrum Ad Hoc network based on PSRP-CDMA

DOI：10.16157/j.cnki.0258-7998.2014061902241

Author：Du Chuanbao，Quan Houde

Author Affilications：Department of Information Engineering, Ordnance Engineering College, Shijiazhuang 050003，China

Abstract：Partitioned Slotted Reservation Packet-Code Division Multiple Access is a MAC protocol which can provide packet level private channel without coordination, the packet format of which consists of packet header and payload. Packet header is accessed to channel by TDMA, and payload is accessed to channel by CDMA. In this paper, we present the performance evaluation analytical model of slotted spread spectrum Ad Hoc networks with PSRP-CDMA as MAC protocol by taking into account intra-cluster multi-access interference. The model provides packet success probability and expressions of network throughput and delay. Based on these expressions, the network performance is affected by these factors, such as spreading gain, received signal noise ratios and network load. Numerical results show that, the normalized network throughput of PSRP-CDMA outperforms competition RP-CDMA by 25%.

Key word：
spread spectrum Ad Hoc network

code division multiple access

multiple user detector

network throughput

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Self-adaptive multi-hop energy efficiency routing based on 3D cell space

DOI：10.16157/j.cnki.0258-7998.2014070202447

Author：Lu Yang，Sun Hui，Huang Guangqun，Liu Junyan

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

Abstract：Considering the problem of energy consumption in 3D routing algorithm of Wireless Sensor Network(WSN), a self-adaptive multi-hop energy efficiency routing algorithm based on 3D cell space(3D-SMEER) was presented. In order to reduce the burden on the current cell leader, the algorithm determined the number of hops based on a self-adaptive multi-hop mechanism, and then the message packets were forwarded by collaborative nodes. Meanwhile, for the sake of the balance of energy consumption of the networks, the algorithm studied the selection region of the collaborative nodes, and the collaborative nodes were selected based on residual energy and related location information. Simulation results show that compared with other algorithms 3D-SMEER saves average energy consumption of the networks, effectively improves the balance of energy consumption of the networks.

Key word：
Wireless Sensor Networks(WSN)

3D cell space

self-adaptive multi-hop

collaborative nodes

energy efficiency

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Mobility aware zone based ant colony optimization routing for VANET

DOI：10.16157/j.cnki.0258-7998.2014060302017

Author：Li Wenqin1，GAO Ren2

Author Affilications：1.College of Mathematics and Computer Science, Yangtze Normal University, Chongqing 408100，China； 2.Telecommunications Institute，Wuhan University, Wuhan 430072, China

Abstract：Vehicular ad hoc networks(VANETs) exhibit highly dynamic behavior with mobility and changed network topologies, which make a challenge in data transmission. Therefore, to make use the information of the vehicle’s movement pattern, vehicle density and vehicle velocity，mobility aware zone based ant colony optimization routing for VANET(MAZACORNET) is proposed. MAZACORNET is hybrid and multi-path routing. It uses ACO to find multiple routes between nodes in the network to aid in link failures. Meanwhile, the network is partitioned into multiple zones. The proactive approach is used to find a route within a zone and the reactive approach is used to find routes between zones using the local information stored in each zone thereby trying to reduce broadcasting and congestion. The simulation results show that the algorithm works well for dense networks. When compared to other existing algorithms ,the hybrid algorithm proved to be more efficient in terms of packet delivery ratio and end to end delay.

Key word：
ant colony optimization

ZONE

multi-path

routing

VANETs

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Resources allocation for CR-OFDM systems with heterogeneous services based on artificial fish swarm algorithm

DOI：10.16157/j.cnki.0258-7998.2014061202127

Author：Hou Hua，Zhang Jiangmei，Zhang Wei

Author Affilications：School of Information & Engineering，Hebei University of Engineering，Handan 056038，China

Abstract：For multiuser cognitive radio orthogonal frequency division multiplexing(OFDM) system, a resources allocation scheme based on Artificial Fish Swarm Algoritm(AFSA) and the new simplified power allocation method is proposed. The scheme considers different QoS requirements and time delays for data, voice and streaming media services and takes reasonable resource allocation without interfering the spectrum holders′usage. For power allocation, a simplified power allocation method which inverses ratio to interference factor is proposed to meet the total transmission power limit and the interference threshold limit that primary user can tolerate. For subcarrier allocation, to get the subcarrier allocation matrix by the artificial fish algorithm. The simulation and analysis show that the proposed scheme can meet different QoS and delay requirements of users’ different services and effectively improve system capacity and reduce the algorithm complexity under the premise of not affecting PU communication and its performance is close to the optimal solution.

Key word：
CR-OFDM System

AFSA

heterogeneous services

subcarrier and power allocation

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A DLMS algorithm design of navigation anti-interference without multiplier

DOI：10.16157/j.cnki.0258-7998.2014051701811

Author：Huang Chao，Li Chaohai

Author Affilications：School of Electronic Engineering, University of Electronic Science and Technology of China，Chengdu 611731，China

Abstract： Satellite navigation signals have the characteristics of weak transmitted power and easy lost of signal carrier and symbol, etc.， which are susceptible to jamming of strong signals. In this paper, an adaptive antenna array is designed for processing for navigation signal anti-interference, the design uses power inversion algorithm which is very suitable for navigation signals to achieve anti-interference. A DLMS algorithm structure without multiplier is proposed which is based on CORDIC algorithm, the pipeline delays from the CORDIC algorithm are suitable for using in the two-dimensional space-time DLMS algorithm, and the delays will not affect the convergence properties of space-time DLMS algorithm and estimation errors. This paper introduces the design parameters of the two-dimensional space-time DLMS and the design of multiplication unit based on CORDIC in detail, and the simulation of system is finished in simulink. The simulation results are given to verify the correctness and feasibility of the design at last.

Key word：
CORDIC

DLMS

navigation anti-interference

space-time adaptive algorithm

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An improved localization algorithm based on RSSI in WSN

DOI：10.16157/j.cnki.0258-7998.2014060302016

Author：Huang Haihui，Li Longlian

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

Abstract：Among the localization algorithms for mobile wireless sensor network nodes, the RSSI-based MCL location algorithm using the received signal strength of the lognormal model improved prediction and filtering process of localization, and also improved positioning performance. However, there are still large amount of calculation and large power consumption, etc. Because the movement state of the object is not a mutation, it is possible to use the first few moments of the trajectory and the motion parameters of the current time could be predicted. This paper uses a Hermite interpolation method, the trajectory of the current moment made a good prediction. Simulation results show that compared with the conventional the algorithm, the sampling range is reduced，the sumpling accuracy is improved，and then the localization accurary is improved，the power consumption of the nodes is reduced.

Key word：
wireless sensor network

localization

hermite monte carlo algorithm

received signal strength indication

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The mathematical validation on the distribution model of ideal scrambled image′s difference histogram

DOI：10.16157/j.cnki.0258-7998.2014030200679

Author： Wang Congli1，2，Chen Zhibin1，Ding Nana2

Author Affilications：1.Ordnance Institute of Technology，Ordnance Engineering College，Shijiazhuang 050003，China； 2.Shijiazhuang Non-commissioned Officer Academy of CAPF，Shijiazhuang 050003，China

Abstract：The main shortage of evaluation methods on image scrambling degree is the lack of criterions and models, and some models have been presented without scientific basis. For example, the linear distribution model of ideal scrambled image′s difference histogram has been advanced in paper without justified. Based on the difference histogram of scrambled image, Pearson Chi-Square hypothesis test and regression analysis are used to test its distribution characteristics in this paper. Simulation results show that the distribution of difference histogram of ideal scrambled image should accord with the linear model. The validation in this paper can provide precise theoretical basis to establish the linear model of difference histogram of ideal scrambled image.

Key word：
image scrambling

scrambling degree evaluation

difference histogram

hypothesis test

regression analysis

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Video chaotic encryption and its FPGA implementation

DOI：10.16157/j.cnki.0258-7998.2014041001265

Author：Chen Shikun，Yu Simin

Author Affilications：School of Automation, Guangdong University of Technology，Guangzhou 510006，China

Abstract： Chaotic systems possess inherent randomness, bounded ergodicity and highly sensitive to initial value and system parameters of deterministic systems, which accord with the basic features of information encrypting systems. In this paper, based on the principle of chaotic cat mapping and using FPGA parallel operation algorithm and its abundant logic resources, video data are firstly captured. Then, the captured video data are encrypted according to chaotic cat mapping. The related design process for video chaotic encryption and FPGA hardware implementation results are also demonstrated.

Key word：
chaotic cat mapping

video capture

video encryption

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Dynamic trusted measurement research with hardware security mechanisms

DOI：10.16157/j.cnki.0258-7998.2014052001846

Author：Zhou Hua，Liu Qiao

Author Affilications：School of Electronic and Information, Guizhou University, Guiyang 550025，China

Abstract：In this paper, based on the theory of trusted computing, a trust chain building method with DRTM is proposed, which is described by the based TPM1.2 specification from the TCG organization and uses the dynamic reconfigurable FPGA. A verification platform is established through combining the ARM-based embedded systems and FPGA, which is used to test and verify the proposed design in this paper. The test proves that the DRTM design based on reconfigurable FPGA is a useful way to build dynamic trust chain for TPM.

Key word：
trusted computing

DRTM

FPGA dynamic reconfigurable

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A honeynet traffic detection method based on xenVMI mechanisms

DOI：10.16157/j.cnki.0258-7998.2014031700921

Author：Wu Jun，Zhang Xiangli，Zhang Yijun，Bai Guangwei

Author Affilications：School of Electronics and Information Engineering，Nanjing University of Technology，Nanjing 211816，China

Abstract：This paper proposes a honeynet traffic anomaly detection mechanism based on the xenVMI mechanism aiming at the private cloud network security risks. Firstly, honeynet flow is intercepted by data capture module. Secondly, the autonomy，initiative and interactive features of BP netual networks are used to train the captured flow features. Lastly, quintuple features information entropy is gotten to determinate the abnormal behavior existing in honeynet. The proposed scheme proves to be effectively in discovery anomalies in honeynet,and enhance defense capabilities of private cloud network by the anomal of analysis.

Key word：
xen

entropy

BP neural network

honeynet

View(6178)

The improvement and application of a K-means clustering algorithm

DOI：10.16157/j.cnki.0258-7998.2014071602638

Author：Zhang Jie，Zhuo Ling，Zhu Yunyou

Author Affilications：Information & Communication Branch of State Grid Chongqing Electric Power Company，Chongqing 401121，China

Abstract： K-means algorithm is the clustering algorithm based on the distance as the similarity measure. But the traditional K-means algorithm are difficult to determine the center number, and greatly influenced by the noise and outliers. This paper uses the between class and within class dissimilarity to improve initial value K, so as to reduce the manual intervention. At the of same time, the distances between every point and the remaining points and the average in the database are calculated, which are the recognition gist of an isolated point and noise point to remove outliers and reduce the impact on data clustering partition. Finally, using the improved K-means algorithm in intrusion detection system and doing simulation experiments, the results show that based on the improved K-means algorithm，the detection system can decrease the false alarm rate and false detection rate, and improve the accuracy of detection.

Key word：
data mining

clustering algorithm

K-means

intrusion detection

View(15134)

Design of AES encryption of data recorder with Hamming code for error-check-correct

DOI：10.16157/j.cnki.0258-7998.2014060402031

Author：Wei Hanming1，2，Liu Wenyi1，2，Guan Yongmei3，Zhang Yanjun1，2，Zhang Guojia1，2

Author Affilications：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，North University of China， Taiyuan 030051，China； 3.Beijing Insitute of Astronautical Systems Engineering，Beijing 100076，China

Abstract： Implemented with FPGA, the paper proposes a method to design data recorder with AES encryption, which is simplified with the encryption work partly done by MATLAB that is the key expansion and Subbyte box, and which is accelerated with Pipelining design. Also, Error-Check-Correct scheme is implemented in the system to resistance the error propagation problem and strengthen reliability. The final data correct work is finished on the PC to reduce its influence on the hardware reading speed.

Key word：
AES

Hamming code

FPGA

Nand Flash

View(12640)

Power Supply Technology and Its Application

A new hydrogen fuel mobile power source based on the hydrolysis of Mg-based hydride

DOI：10.16157/j.cnki.0258-7998.2014090403240

Author：Yang Dong1，Lei Yong1，Liu Peipei2

Author Affilications：1.School of Electrical Engineering and Information，Sichuan University，Chengdu 610065，China； 2.College of Materials Science and Engineering，Sichuan University，Chengdu 610065，China

Abstract： Aiming at that the traditional mobile power needs charge by electric，has a certain probability to produce explosion during use，and products harmful to the environment after using，the research and development of a new hydrogen fuel mobile power supply are given for the Mg-based hydrides as hydrogen donor, with advantages of controlled hydrolysis reaction process and hydrogen supply process，sustainable power，good portability，low cost of raw materials，the output voltage stability and suiting long-term outdoor workers.

Key word：
portable power source

hydrogen fuel cell

Mg-based hydride

hydrolysis

View(5770)

Wind energy capture control of PMSG for wind power generation with speed observer

DOI：10.16157/j.cnki.0258-7998.2014082703128

Author：Wang Yinsong，Hai Ri，Wang Shuyuan

Author Affilications：School of Control and Computer Engineering，North China Electric Power University，Baoding 071003，China

Abstract：Based on direct torque control(DTC) of permanent magnet synchronous generator(PMSG) for wind power generation, this paper proposes a wind energy capture strategy with a speed observer to obtain wind energy and reduce the cost of installing mechanical sensors. The applied control strategy could overcome the influence on system parameter variations and unknown wind disturbances. Through the simulation study on a 2 MW PMSG system, the experimental results show that the generating system with proposed control strategy has a quick tracking performance of wind, an accurate estimating value of speed and a high robust ability to unknown disturbance of wind.

Key word：
direct torque control

direct-drive

permanent magnet synchronous generator

speed observer

wind energy capture

View(8004)

Software design of wireless power transmission system based on magnetic coupling resonant

DOI：10.16157/j.cnki.0258-7998.2014081502977

Author：Zhang Zhijuan，Cui Shuixiang，Liang Xuemei

Author Affilications：School of Electrical and Electronic Engineering, North China Electric Power University，Baoding 071003，China

Abstract： To overcome the problem of selecting experimental parameters of magnetic coupling resonant wireless power transmission system in given requirements, the working principle of this system is first analysed based on mutual inductance coil model. And then by the theoretical analysis, the relationships between transmission efficiency and system parameters such as coil size, load resistance, the resonant frequency and load power are obtained. According to the theoretical result, a software of magnetic coupling resonant wireless energy transmission system is designed. System parameters of requested maximum load power in given transmission distance are worked out to provide a theoretical guidance for experiment′s design. At last, the design is proved by experiments.

Key word：
wireless power transmission

resonance

system parameters

software design

View(8166)

Analysis and improvement of fire about RC power supply

DOI：10.16157/j.cnki.0258-7998.2014081402955

Author：Dai Xiumin

Author Affilications：GD Midea Environment Appliances MFG Co.，Ltd.，Zhongshan 528425，China

Abstract：The accurate analysis of the causes of fire about Resistance Capacitance Power Supply(RC Power Supply) is given from the circuit theory, failure mode analysis, quality defects and the grid environment，to find the solution, and the market validation is done. The cause of the fire is that the interference of electromagnetic cooker and other appliances affects the resistance in the RC power supply by power grid, so that the resistance produces high temperature and fires. The series appropriate inductance in the RC power supply can reduce the interference power which is applied to the resistance.

Key word：
RC power supply

resistance heating

fire

View(10158)

Small-signal modeling analysis and compensation design for CRM Boost PFC converters in voltage-control-mode

DOI：10.16157/j.cnki.0258-7998.2014070302463

Author：Yan Liming1，Li Maoze1，Jiang Yuxi2，Wang Cheng1，Guan Yanqing3

Author Affilications：1.Shanghai University Microelectronic R&D Center，Shanghai 200444，China； 2.Shanghai Jiao-tong University，Shanghai 200240，China； 3.Shanghai SANSI Electronic Engineering Co.，Ltd.，Shanghai 201100，China

Abstract： In this paper a small-signal model of CRM Boost PFC in voltage controlled model is derived under the circumstance of State-Space Averaging Method is becoming invalid. Firstly, the current injected equivalent circuit approach is adopted to derive its mathematical model. And then, based on the derivation of this model, a compensator is designed to make the system much more stable. Finally, a 10 W CRM-Boost PFC converter is designed on a professional switch supply simulation platform SIMetrix/SIMPLIS, which well verifies the derivation and the compensator design.

Key word：
voltage controlled model

CRM Boost PFC

small-signal model

loop stability

View(12814)

A design of on-board power lithium batteries active balancing system

DOI：10.16157/j.cnki.0258-7998.2014081102916

Author：Yao Jing，Zhan Changhui，Han Ting，Guo Yanping

Author Affilications：Hefei Guoxuan High-tech Power Energy CO.，Ltd.，Hefei 230012，China

Abstract： With the wide application of electric vehicle, the consistency problem of power on-board lithium battery pack has draw more and more attention of people. As the existence of consistency problem, available capacity and service life of battery pack has important practical significance of using a group of cells. So the lithium battery pack balancing system is very important. This paper puts forward a kind of lithium battery pack balancing method which based on energy transfer, and analyses the working principle of the equilibrium method. The balancing system is established and demonstrated through experiment. Results show that this method has simple structure, high efficiency, and can solve effectively the series of lithium batteries imbalance.

Key word：
lithium battery

active balancing

battery management system

View(13114)

Computer Technology and Its Applications

Speeded-up SIFT on GPGPU

DOI：10.16157/j.cnki.0258-7998.2014120102015

Author：Yang Tiantian1，Lu Yunping2，Zhang Weihua2

Author Affilications：1.Software of Digital Media School，Jiangnan University，Wuxi 214083，China； 2.Parallel Processing Institute，Fudan University, Shanghai 201203，China

Abstract： The modern GPGPU is not only a powerful graphic processor but also a highly parallel programmable processor. Stronger arithmetic ability and higher bandwidth bring GPGPU great competitive power in real-time processing systems and high-performance computing systems.This paper designs and implements parallel acceleration algorithms for SIFT on GPGPU. We make best use of GPGPU architectures to accelerate our implementations, including uses of shared memory and texture memory, decreasing allocation and free times of memories on GPGPU and etc. GPGPU usually cooperates with CPU to finish a job. This paper implements SIFT on GPGPU in consideration of the impacts of CPU. Experimental results show this method can achieve a speedup of 118.2X with a throughput of 76.86 images per second.

Key word：
GPGPU

SIFT

parallel

acceleration

View(7750)

Distribution network planning integrated decision based on the structure entropy and a multi-level gray relationship

DOI：10.16157/j.cnki.0258-7998.2014120101206

Author：He Jun1，Li Ming2，Liu Ying2，Wang Zhuangzhuang2

Author Affilications：1.State Grid Sichuan Electric Power Company Chengdu Power Company，Chengdu 610000，China； 2.Shandong Guoyan Electric Power Technology Co.，LTD，Jinan 250101，China

Abstract： The complexity and multi-objective power make enormous difficulties to integrated decision-making of distribution network, to build a system can meet the operational requirements as mell as the economic requirements of the plan is of great significance. From the four aspects of the economy, reliability, adaptability and social impact，the distribution network planning studies are done, and an evaluation system is given. Structural entropy method is used to determine the weights，and multi-level gray correlation method is used for a comprehensive evaluation plan of distribution network. Finally, the analysis of the evaluation results of the three network planning of an area indicate the effectiveness of comprehensive evaluation index system and the method established in distribution network planning scheme optimization applications.

Key word：
distribution network planning

structural entropy

multi-level gray relationship

integrated decision-making

View(6372)

Multiple target tracking using shape context features and particle filter

DOI：10.16157/j.cnki.0258-7998.2014120102017

Author：Qi Shuxia

Author Affilications：School of Information，Shandong University of Political Science and Law，Jinan 250014，China

Abstract： Target tracking is still a hot and difficult research topic in computer vision. In this paper, we proposed a novel multiple target tracking method, which is based on shape context features and particle filter. Our method is proposed to deal with problems of the target objects entering(or leaving) the scene and overlap(or separation) by incorporating Adaboost detection. First, we adopt Adaboost detection algorithm for detecting multiple objects. Then, the target appearance model is builded by using the shape context features. Finally, we apply particle filter to choosing target particles and tracking objects in videos. The experiments indicate that the proposed method can effectively deal with the issue of targets entering(or leaving) the scene and targets overlap(or separation), and exactly track the targets which is under both single and complex background. And the proposed method also can handle partial occlusion on some extent.

2015 No. 01

Publish Date：2015-01-06

ISSN：0258-7998

CN：11-2305/TN

Review and Comment

Key word： electronic information industry chain competitive force model organization model formation mechanism value basis comparative study View(6498)

Key word： lead-free solders alloying particles strengthen data support View(5258)

Key word： cellular network WLAN WSN mobile terminal GPS BDS View(21056)

Embedded Technology

Key word： full system simulation environment Simics VxWorks embedded operating system fault injection View(8570)

Key word： DaVinci H.264 video surveillance system DM6467 View(6028)

Key word： solar power automatic tracking IAP15F2K61S2 dual-axis tracking system “3+1” quadrants sensor dust removing and cooling system View(9486)

Key word： automotive road gradient detector multi-sensor information fusion fieldbus network embedded system View(6514)

Key word： infrared dome camera STM32 PT4115 light-compensating system PWM View(12872)

Key word： continuous non-invasive blood pressure pulse transmit time electrocardiograph photoplenthysmogram Bluetooth View(20758)

Microelectronic Technology

Key word： LTE-A CRC checker convolutional codes Turbo codes interleaver parallel bit processing View(8042)

Key word： smart grid wireless communication LTE230 TD-LTE electricity communication View(19860)

Key word： MEMS gyroscope Allan variance gross error least squares Kalman filter View(25976)

Measurement Control Technology and Instruments

Key word： LXI instrumentation SCPI command command conversion View(12780)

Key word： programmable logic device programmable delay line pulse generator View(12138)

Key word： PID control algorithm RBF neural network error correction series robot trajectory tracking control View(12208)

Key word： multi-wire saw industrial personal computer control system PCI bus View(15212)

Key word： NMR filter low rectangular coefficient frequency continuous adjustable Q value View(6426)

Key word： time-interleaved FPGA error correction high-speed sampling View(12094)

Key word： control augmentation system limiter for attack angle flying qualities business jet aircraft View(5596)

Key word： address assignment automatic parameters address extension routing protocol View(4422)

Key word： spread spectrum Ad Hoc network code division multiple access multiple user detector network throughput View(4664)

Key word： Wireless Sensor Networks(WSN) 3D cell space self-adaptive multi-hop collaborative nodes energy efficiency View(4114)

Key word： ant colony optimization ZONE multi-path routing VANETs View(5406)

Key word： CR-OFDM System AFSA heterogeneous services subcarrier and power allocation View(4798)

Key word： CORDIC DLMS navigation anti-interference space-time adaptive algorithm View(7084)

Key word： wireless sensor network localization hermite monte carlo algorithm received signal strength indication View(14252)

Key word： image scrambling scrambling degree evaluation difference histogram hypothesis test regression analysis View(5518)

Key word： chaotic cat mapping video capture video encryption View(6622)

Key word： trusted computing DRTM FPGA dynamic reconfigurable View(9354)

Key word： xen entropy BP neural network honeynet View(6178)

Key word： data mining clustering algorithm K-means intrusion detection View(15134)

Key word： AES Hamming code FPGA Nand Flash View(12640)