2015 No. 07-Application of Electronic Technique

Review and Comment

Study on the development trend of military bus

DOI：10.16157/j.issn.0258-7998.2015.07.002

Author：Dong Dawei1，Zhou Yujiang1，Guo Ying2

Author Affilications：1.China Electronics Corporation，Beijing 100086，China； 2.MXTronics Corporation Beijing，Xi′an 710119，China

Abstract：“Integrated modular avionics system” is an important part of military aircraft, its structure directly determines the performance of aircrafts and the military data bus type. With the increasing development of avionics system, especially in the current stage of distributed integrated electronic system, the system puts forward higher request to the military bus time deterministic redundant, high fault tolerance, combination, inheritance, high bandwidth and other indicators. This paper compares the advantages and disadvantages of several present bus and the specific application scenarios, and proposes the TTP/C is the current bus protection accords with the development of integrated avionics system.

Key word：
DIMA

military data bus

TTP/C

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The development and application of miniature LED array device

DOI：10.16157/j.issn.0258-7998.2015.07.001

Author：Li Xiang1，Liang Zhongzhu2，Bao Xingzhen2，Liang Jingqiu2

Author Affilications：1.The 47th Research Institute of China Electronics Technology Group Corporation，Shenyang 110032，China； 2.State Key Laboratory of Applied Optics，Changchun Institute of Optics，Fine Mechanics and Physics， Chinese Academy of Sciences，Changchun 130033，China

Abstract： LED type micro array device as a kind of solid-state active light-emitting devices, has low working voltage and high luminous efficiency, fast response, stable and reliable performance, wide working temperature range, etc. On the same chip integrated LED array technology is a good way to meet the self-luminous micro display, lighting, communication application requirements, etc. At present, both at home and abroad，there is very rapid progress of micro array device in the LED. This article mainly reviews the research progress both at home and abroad of microarray LED devices and potential application of micro array device，and the development direction and application field of LED in the future are discussed.

Key word：
LED

micro array device

micro display

MEMS

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Research and development of low pressure MEMS capacitive sensors

DOI：10.16157/j.issn.0258-7998.2015.07.003

Author：Zhang Rui1，2，Liang Ting1，2，Xiong Jijun1，2，Liu Yutao1，2，Wang Xinxin1，2，Wang Taolong1，2

Author Affilications：1.Key Laboratory of Instrumentation Science & Dynamic Measurement(North University of China)， Ministry of Education，Taiyuan 030051，China； 2.Science and Technology on Electronic Test & Measurement Laboratory，North University of China，Taiyuan 030051，China

Abstract： Advantages in low pressure measurement of capacitive sensors and technical difficulties in the realization of low pressure MEMS capacitive sensor are presented. From the perspective of different measuring methods, the developments of low pressure MEMS capacitive sensor in worldwide are overviewed from research achievements, key technologies and applications in detail. Finally, the development direction and present challenges of these sensors are analyzed.

Key word：
d present challenges of these sensors are analyzed. Key words：

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Embedded Technology

The FPGA real-time distance measuring system based on OTSU algorithm

DOI：10.16157/j.issn.0258-7998.2015.07.004

Author：Lin Yibing，Shi Shoudong, Sun Shudan

Author Affilications：College of Information Science and Engineering, Ningbo University, Ningbo 315211，China

Abstract：With the improvement of the FPGA chip integration, as well as its advantage of low price, more and more video image processing platform adopt schemes based on FPGA technology. This paper designs and realizes a FPGA real-time distance measuring system based on OTSU algorithm. First，a video image gray level transformation of the non-floating point arithmetic realization is designed，and OTSU algorithm hardware implementation scheme is discussed in detail, including its principle, the formula of simplified, pipeline processing, etc. After OTSU algorithm processing，through the statistics of binary image in the column width of twisted-pair，the distance between the two most narrow column width around the pitch is calculated. Finally，software module is wroten to implement functions.

Key word：
OTSU

pitch measurement

FPGA

image processing

NIOS II

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Multi-sensor control device design based on DALI protocol

DOI：10.16157/j.issn.0258-7998.2015.07.005

Author：Zhang Yujie，Yang Xiaowei

Author Affilications：College of Electrical and Information Engineering，Shaanxi University of Science and Technology，Xi′an 710021，China

Abstract：In view of the current DALI system sensor decentralizing installation, inflexible system controlling and inconvenient parameter configuration problem，this paper proposes a SN32F248 microcontroller as the core, the μC/OS-II operating system as the platform, control equipment design with multiple sensors. WiFi chip ESP8266 is used to realize the wireless configuration and query of control equipment. Infrared remote control with the use of multiple sensors achieves a system of mode switching, scene switches and lighting control. The establishment of μC/OS-II in the SN32F248 transplantation and semaphore mechanism solves the scheduling problem of communication between tasks, and realizes the real-time operating system.

Key word：
DALI

infrared remote control

WiFi

μC/OS-II

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Multi-mode LDPC layered decoder architecture for 60 GHz system

DOI：10.16157/j.issn.0258-7998.2015.07.006

Author：Jiang Penggang，Jin Depeng

Author Affilications：Department of Electronic Engineering, Tsinghua University, Beijing 100084，China

Abstract： Simultaneous two-layer iteration architecture for multi-mode LDPC layered decoder is proposed for the IEEE 802.11ad standard in 60 GHz communications systems. Via utilizing the property that the check matrix becomes more sparse as the code rate decreases, the check matrixes of all code rates have been compressed into the unique one for supporting multi-mode LDPC decoding. Meanwhile, layered iterative decoding are employed to reduce the number of iteration efficiently. Based on the proposed architecture, a four-code-rate LDPC decoder for the IEEE 802.11ad standard is implemented on Vertex-6 FPGA with 34% LUTs resources and the maximum throughput of 3.507 Gb/s. Comparison results show that the proposed decoding architecture has the advantage of low complexity and high throughput.

Key word：
LDPC decoder

60 GHz

simultaneous two-layer iteration

high throughput

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The modularization of embedded attitude determination system software

DOI：10.16157/j.issn.0258-7998.2015.07.007

Author：Tian Anqi，Jin Tian

Author Affilications：School of Electronic and Information Engineering，Beijing University of Aeronautics and Astronautics，Beijing 100191，China

Abstract：Because the embedded attitude determination system software demands to realize different receiver boards, different navigation systems and a variety of attitude algorithms to meet various needs, the software has complex function and long routine. However, the software will be efficient and flexible to operate with the modularization of it. This paper will discuss the unit division of the software according to the main process and its functions by means of a idea to modularization based on ARM. What’s more, it elaborates on the function of each module and the interface between modules solving the operability, expansibility and other issues, therefore it achieves modular design. The actual data results which show that portability, expansibility, availability and resource utilization have been all improved after the modularization of embedded attitude determination system software are obtained. Besides, the embedded system is suitable for carriers.

Key word：
attitude determination

ARM

modularization

software

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The design of storm surge monitoring system based on ARM9 and Linux

DOI：10.16157/j.issn.0258-7998.2015.07.008

Author：Yong Yaxun1，2，Liu Weiting1，Liu Huaizhi2，Zhou Tao2

Author Affilications：1.School of Electrical and Information，Jiangsu University of Science and Technology，Zhengiang 212003，China； 2.CSIC Pride (Nanjing) Atmosphere Ocean Information System Co.，Ltd.，Nanjing 211106，China

Abstract：For Pingtan and Xiapu，which are coastal areas of Fujian province，both exist danger of storm surges, storm surge monitoring system is designed based on ARM9 and Linux. The system is to study the settlement near the coast climbing and visual management platform, the platform can display the video information of target seawall in real time, receive in real time, preprocess embankment sea wave height, period, wave running, wind speed, wind direction, barometric pressure and other marine environment real-time monitoring data, and for getting from observing the video stream of the nearshore waves climbing on the seawall,carry out image processing, geometric correction, analysis solver and so on. Through testing, the system is suitable and for both, for the rest of the dangerous storm surge area，it is also suitable for promotion.

Key word：
storm surge

ARM9

Linux

real-time monitoring

signal processing

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Design of Internet of Things access system based on Web services

DOI：10.16157/j.issn.0258-7998.2015.07.009

Author：Yu Hongbo1，2，3，Liu Hongfei1，2，3，Fang Liying1，2，3，Chen Daoxin4，Wang Pu1，2，3

Author Affilications：1.College of Electronic and Control Engineering，Beijing University of Technology，Beijing 100124，China； 2.Engineering Research Center of Digital Community，Ministry of Education，Beijing 100124，China； 3.Beijing Laboratory for Urban Mass Transit，Beijing 100124，China； 4.Capinfo Company Ltd，Beijing 100029，China

Abstract： Due to the increasing of access devices and application businesses of Internet of Things(IoT), IoT application development needs to coordinate between businesses and devices. Aiming to this problems, this paper proposes an architecture about Service-Oriented model, and through Web service model prompts the message pipeline processes of IoT access devices information operation. On this basis, the problems of heterogeneity can be solved via basis access information dealing process. Based on Intel CISC embedded development environment, an IoT access system is designed and implemented on multiple programming languages. Through the actual test, the system can accomplish the business function of the direct manage and control from application layer to sensing layer.

Key word：
service-oriented

message pipeline

heterogeneous processing

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Hardware accelerating design at cockpit graphics generation system

DOI：10.16157/j.issn.0258-7998.2015.07.010

Author：Cao Feng，Gao Weilin

Author Affilications：Suzhou Changfeng Avionics Company Limited，Suzhou 215151，China

Abstract： According to the requirement of real-time generation and display of high resolution graphics at cockpit, a method of graphics blanking and filling acceleration is proposed. A state machine is designed in FPGA to process the pixel sign set by DSP. SDRAM is used as frame memory, and accessed by DSP and FPGA through pingpong operation. In this way, blanking and accelerating for the graphics with high definition is achieved. There is no need to write the data back to SDRAM, which produces zero delay for graphics output. Experimental results reveal that the proposed solution is capable of reducing the graphics drawing time.

Key word：
high resolution graphics display

hardware acceleration

sign processing

state machine

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Microelectronic Technology

An innovative method to achieve minimum tripping current conformity for type A RCCBs

DOI：10.16157/j.issn.0258-7998.2015.07.011

Author：Zhang Jiaqi，Han Yan，Li Ailing

Author Affilications：Institute of Microelectronics and Optoelectronics，Zhejiang University，Hangzhou 310027，China

Abstract：This paper presents an innovative method to decrease the discreteness of minimum tripping current for type A residual current operated circuit breakers(RCCBs). Different but continuous time intervals′ detection method is proposed to identify the residual current′s type and judge whether its root mean square(RMS) value has exceeded the rated value in one cycle. That is, after the timer is started, 0～3 ms ±135°leakage current is detected，3～7 ms ±90° is detected，7～12 ms ±0° is detected, 3～7 ms and 12～16 ms type AC is detected. What′s more the method is fabricated in a mixed-signal 0.5 μm CMOS process, and test results show that the type A RCCB′s tripping current variation is decreased to 2.8 mA，which greatly improves the chip′s reliability and anti-interference ability.

Key word：
type A RCCBs

discreteness of the minimum tripping current

reliability

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Research on FPGA timing control of naked-eye 3D LCD

DOI：10.16157/j.issn.0258-7998.2015.07.012

Author：Liu Min1，2，Liang Fayun1，2，Wang Xingpeng1，2，Xiong Genliang1，Chen Haichu1

Author Affilications：1.3D & VR Research Center，Nanchang University，Nanchang 330031，China； 2.Nanchang Properasla Optoelec Sci-Tech Dev Co.，Ltd，Nanchang 330031，China

Abstract： As the image display vector the naked-eye 3D LCD can transmit left and right image to eyes accurately to form stereo vision. The left and the right image signal using FPGA to accurately control the frame synchronization，horizontal synchronization and pixel clock，making the image pixel accurate transmission to the corresponding position of the screen. This paper studied the data interface of the naked eye 3D screen, through the display algorithm and the use of hardware description language establish the model of image data transmission, got the logic design of display naked-eye subtitle. The system through the experimental verification, it runs steadily.

Key word：
naked-eye 3D

3D subtitles

FPGA

Verilog

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Design of linear-assisted DC-DC voltage converter

DOI：10.16157/j.issn.0258-7998.2015.07.013

Author：Hou Huiqi，Han Zhigang，Jordi Cosp-Vilella

Author Affilications：School of Electronic and Information，Tongji University，Shanghai 201804，China

Abstract：The design of a linear-assisted DC-DC voltage converter is introduced in this paper. In this technology，on one hand, a linear-assisted voltage regulator can be used to cancel the output voltage ripple and rapid response can be made with the changes of load. On the other hand, switching converters connected in parallel can provide almost all the output current of load. This circuit connection reduces the heat loss on the circuit, which greatly improves the efficiency of the voltage converter. Therefore, in the low to medium power supply system current consumption, this design has its own advantages.

Key word：
DC-DC voltage converter

linear-assisted

switching converters

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A design and implementation of low-power and high-security chip for dual-interface smart card

DOI：10.16157/j.issn.0258-7998.2015.07.014

Author：Zhang Haifeng，Hou Zhanbin，Chen Kuilin

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

Abstract： In accordance with ISO/IEC7816 and ISO/IEC14443-A protocol, this paper accomplished the design, implementation and sample test of low-power and high-security dual-interface chip, which has both contact and contactless interface for communication based on CPU, and the chip has a good balance among the speed, area and power consumption. The results show that, using the HHNEC 0.13 ?滋m process, the chip area is only 8.08 mm2, and the average working power consumption under 16 MHz system clock is about 2 mA, which fully meet the requirements of chip performance. 128 KB Flash used as program memory could provide a flexible, powerful space for the COS(Card of System) application development, and it is also facilitated for the further upgrade of software programs. Meanwhile, the chip has high-security, controllability and reliability, which could be well applicable to various types of dual-interface smart card.

Key word：
high-security

low power

dual-interface

smart card

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Measurement Control Technology and Instruments

Research of variable structure control considering friction based on shipboard stabilized platform

DOI：10.16157/j.issn.0258-7998.2015.07.015

Author：Wang Yuhui1，Zhou Zailong2

Author Affilications：1.School of Science，Qingdao Technological University，Qingdao 266033，China 2.National Computer System Engineering Research Institute of China，Beijing 100083，China

Abstract：To obtain clear video signal, it is necessary to use a stability control platform carried with camera offer a good isolation space environment. The platform is a 3-axis multi-body mechanical device. While shipboard being different motion posture, the friction torque between the shafts will vary, a variable structure control(VSC) method considering friction compensation is presented. Simulation and research results demonstrate VSC controller can effectively eliminate “crawling”and “flat top”phenomena compared with PID control. VSC of using the exponential approach law can make the system quickly track the input command signal, dynamic effect is good.

Key word：
camera stabilized platform

variable structure control

friction

PID

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Prefetching gesture recognition based on online semi supervised Kohonen network

DOI：10.16157/j.issn.0258-7998.2015.07.016

Author：Zhang Li1，Tian Yantao2，3，Xu Zhuojun2

Author Affilications：1.College of Instrumentation and Electrical Engineering，Jilin University, Changchun 130061，China； 2.College of Communication Engineering, Jilin University, Changchun 130025，China； 3.Key Laboratory of Bionic Engineering Ministry of Education, Jilin University, Changchun 130025，China

Abstract：In order to realize the grasp of intelligent bionic hand, and improve the timeliness and sensitivity of pattern recognition, a semi supervised Kohonen network is presented in this paper. According to the characteristics of surface electromyography (sEMG), the network combines the advantages of supervised and unsupervised network, and applies the data editing method to handle the training set, then to update the identification network based on the supervised Kohonen network. The presented network is used to identify the four prefetching patterns online: lateral, spherical, fingertip and cylindrical. Experiments show that, compared with the different Kohonen network, the recognition method has a good ability to identify online and correct rate.

Key word：
gesture recognition

surface electromyography

online semi supervised

Kohonen network

data editing

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The design of ultrasonic heat meter with high precision and low power consumption based on TDC-GP22

DOI：10.16157/j.issn.0258-7998.2015.07.017

Author：Gao Zhengzhong1，Tan Chong1，Zhao Liancheng2，Li Kaixuan1，Wei Ningning1

Author Affilications：1.Shandong University of Science and Technology，College of Electrical Engineering and Automation，Qingdao 266590，China； 2.Shandong Zaozhuang Mining Industry Group Company，Zaozhuang 277000，China

Abstract：Based on the new-type high-speed digital converter chip TDC-GP22 and time-difference measurement principle, this paper designs an ultrasonic heat meter with high precision and lower consumption. In order to improve the measurement accuracy, it adopts a W reflective ultrasonic heat meter base table to achieve the measurement of flow. To achieve low power consumption, MSP430 series serve as the main control chip to control peripheral circuits and process data. The measurement unit of TDC-GP22 mainly complete the measurement of ultrasonic transit time and inlet and outlet temperature. Tests show that the measurement precision error of this calorimeter can be controlled within 1% and its working current is about 9?滋A in class A environment. It has stable performance and broad prospect of application.

Key word：
TDC-GP22

ultrasonic heat meter

low power

high precision

W reflective

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Radar target recognition using fast sparse decomposition

DOI：10.16157/j.issn.0258-7998.2015.07.018

Author：Duan Peipei1，2，Li Hui2

Author Affilications：1.School of Computer Science，Xi′an Shiyou University，Xi′an 710065，China； 2.School of Electronics and Information，Northwestern Polytechnical University，Xi′an 710029，China

Abstract： There are many radar target recognition algorithms based on high range resolution profile(HRRP), but less of them employ the sparseness of HRRP samples. Thus, an redundant dictionary and a fast sparse representation algorithm are used to implement radar target recognition here. First, a Gabor redundant dictionary was partitioned by the characteristics of the atoms in it. By doing this, the atoms storage was decreased and the dictionary was generated faster. Then, the genetic algorithm-matching pursuit algorithm(GAMP) was used to product the training samples’ taxonomic dictionaries quickly. Finally, the reconstruction errors of testing samples were calculated to recognize the targets. The simulations show that this algorithm has the advantages of concise, higher recognition rate and good robustness.

Key word：
radar target recognition

high range resolution profile

sparse decomposition

redundant dictionary

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Design of a new verification device for AC voltage

DOI：10.16157/j.issn.0258-7998.2015.07.019

Author：Sun Yanling1，He Yuhan1，Zhai Xiaohui1，Sun Xiaobin2，Sun Yanfeng3，Han Dongjun4

Author Affilications：1.State Grid Shandong Electric Power Research Institute，Jinan 255000，China； 2.State Grid Shandong Electric Power Company，Jinan 255000，China； 3.State Grid Tianjin Ji County Power Supply Company，Tianjin 301900，China； 4.Yantai Dongfang Wisdom Electric Co.，Ltd，Yantai 264000，China

Abstract： The verification device for AC voltage based on FM3308 microprocessor has been designed to solve the problem of accuracy in AC voltage by smart electricity meter. This system adopts modular control strategy, the hardware and software system design of the verification device are detail introduced. The designs of hardware parts include power circuit, voltage sampling circuit, measurement control circuit, infrared communications circuit. The designs of software parts include main program flow and calibration flow chart. After verification by the standard power source, experimental data of verification device is accurate, high error precision, meet the smart electricity meter request and performance.

Key word：
smart electricity meter

FM3308

microprocessor

infrared communications

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Infant and young child safety monitoring system research

DOI：10.16157/j.issn.0258-7998.2015.07.020

Author：Li Wenxin，Chen Guojin，Chen Chang，Wang Kunzhe，Huang Cao

Author Affilications：School of Mechanical Engineering，Hangzhou Dianzi University，Hangzhou 310018，China

Abstract： A set of infant security system based on STC89C52 and sim300c is introduced in this paper, using the single chip microcomputer as main control system, combined with RFID sensor technology, GPRS communication technology, speech detection technology, achieve the detection of infants and young children′s temperature, crying, wet diapers,and so on and so forth. The system has the function of a wireless remote measurement and control, convenient operation, low cost and suitable for extensive use.

Key word：
RFID

sim300C

multifunction

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Design of storage testing system based on AES algorithm

DOI：10.16157/j.issn.0258-7998.2015.07.021

Author：Sun Wen1，2，Zhu Ping1，2

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

Abstract： In order to achieve the data encryption requirement of storage testing system, which brings a design of data encryption system based on AES algorithm. The algorithm′s simulation and the hardware design of the system are finished. This system′s hardware is based on Xilinx′s FPGA to realize data acquisition and encryption. The design uses VHDL to realize the AES algorithm in hardware and simulates every module of algorithm. Seen from the results of the simulation, the design completely meets the system′s data encryption demand and achieves the design’s requirement.

Key word：
AES

storage testing

VHDL

encryption system

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Research of UAV data transmission system based on power inspection

DOI：10.16157/j.issn.0258-7998.2015.07.022

Author：Wei Chuanhu1，2，Ren Jie2，Zhang Jingjing1，2，Liu Liang1，2，Wang Wanguo1，2，Yang He3

Author Affilications：1.State Grid Shandong Electric Power Research Institute，Jinan 250002，China； 2.Shandong Luneng Intelligence Technology Co.，Ltd，Jinan 250101，China； 3.Tian Jin Zhong Wei Aerospace Data System Technology Co.Ltd，Tianjin 300301，China

Abstract： The technique of integrative transmission for unsymmetrical information is put forward, aiming at transferring information having different properties or qualities on UAV(Unmanned Aerial Vehicle) data link. DS is adopted on crucial telemetry information, and then the information including telemetry and remote sensing is modulated with QPSK. The technique of integrative transmission has advantages, such as more reliable than direct link without DS and more flexible than UQPSK. Simulation of Matlab indicates the technique improve SNR of crucial information and advance frequency spectrum utilization ratio simultaneity, as good as theory analysis.

Key word：
data links of UAV

unsymmetrical information

integrative transmission

anti-interference

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A distributed routing scheme in wireless Mesh networks

DOI：10.16157/j.issn.0258-7998.2015.07.023

Author：Zhong Lang，Li Guangjun，Yang Xuemin，Yang Yunle

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

Abstract： The performance of Multi-Radio Multi-Channel(MRMC) wireless Mesh networks fluctuates with the change of link load and locations of nodes. For such problems, a routing based on hybrid channel assignment(RHCA) which improved from Hybrid Wireless Mesh Routing Protocol(HWMP) is proposed. This scheme could both achieves route setup and the optimal channel allocation. The simulation results demonstrate that compared to conventional separated schemes, the proposed RHCA has significant advantages on throughput and average transmission delay. In addition, in the nodes motion scenario, RHCA also has much better robustness.

Key word：
wireless Mesh networks

distributed routing algorithm

channel assignment

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Joint design of physical layer network coding and BICM-ID

DOI：10.16157/j.issn.0258-7998.2015.07.024

Author：Yuan Quansheng，Hu Yongjiang，Wang Changlong，Yang Zhimin

Author Affilications：Unmanned Aerial System Engineering Department,Ordance Engineering College，Shijiazhuang 050003，China

Abstract： A new joint scheme of coded modulation(CM) and physical layer network coding(PNC) is proposed based on bit-interleaved coded modulation with iterative decoding(BICM-ID)in the investigated two-way relay scenario. As a result of the adoption of new constellation mapping program ,the scheme improves the free distance of the coding sequence, thus more encoding gain is obtained. In addition, the proposed scheme combines coded modulation with physical layer network coding，thus improve the network throughput. Furthermore, complexity of decoding recede as a result of application of a single SISO in decoding module and convolutional coding. In this way the complexity of the decoding at the relay node is reduced by almost 50%.

Key word：
BICM-ID

PNC

convolutional coding

joint design

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Research on channel polarization of polar codes with high-order modulation

DOI：10.16157/j.issn.0258-7998.2015.07.025

Author：Zhang Xincheng，Lin Dengsheng，Li Shaoqian

Author Affilications：University of Electronic Science and Technology of China，National Key Laboratory of Communications，Chengdu 611731，China

Abstract：To avoid the channel polarization problem of the various noise power of the coded bits caused by high-order modulation based on the traditional methods, we propose a method to divide the channel of high-order modulation into a couple of parallel binary-input channels with constant noise power so that the traditional channel polarization method for binary-input channel is available to polarize the channel of high-order modulation. We also give the design in detail for 8-PSK modulation and PAM/QAM modulation. Finally, the simulation results are given to demonstrate the advantage of the proposed methods in terms of performance.

Key word：
polar codes

high-order modulation

coded modulation

parallel channels

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40 GHz desktop wireless transmission channel link loss analysis from millimeter wave

DOI：10.16157/j.issn.0258-7998.2015.07.026

Author：Huang Lei，Zhou Jie，Liu Peng

Author Affilications：Laboratory of Meteorological Detection and Information Processing，Nanjing University of Information Science & Technology， Nanjing 210044，China

Abstract：According to different polarization modes, proposing a reflection coefficient representation based on the distance and putting forward for the desktop 40 GHz wireless transmission channel link loss model. Studying and comparing link loss the materials worked in typical desktops, and to verify the validity of the data obtained by fitting the theoretical average link loss method parameters. Comparing the link loss from 60 GHz and 40 GHz at the desktop environments. The results show that the environment under the vertical polarization mode and the wooden desktop material, a higher fit will be described about average link loss.

Key word：
40 GHz

reflection coefficient

desktop materials

link loss

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The effect on measurement accuracy by frequency-domain interference suppression technique on surveying receiver

DOI：10.16157/j.issn.0258-7998.2015.07.027

Author：Wang Zhenwei，Cui Xiaowei，Lu Mingquan

Author Affilications：Department of Electrical Engineering，Tsinghua University，Beijing 100084，China

Abstract： A frequency-domain interference suppression(FDIS) technology with a threshold for interference detection is employed and applied to a surveying receiver in this thesis. By suppressing different interferences，the correlation of signal and measurement accuracy of tracking loops is analyzed via simulations. The simulation results and analysis show that the FDIS can suppress the interference with jam-to-signal ratio 50 dB. The signal energy is lost while the spectral line is excised. The effect on measurement accuracy by different interferences is various, and the effect by narrowband interference is the most significant. The effected measured value still meets the accuracy requirement.

Key word：
frequency domain interference suppression

measurement accuracy

narrowband interference

surveying receivers

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A new broadcasting emergency message algorithm in VANETs

DOI：10.16157/j.issn.0258-7998.2015.07.028

Author：Zhang Renzhi，Han Dong

Author Affilications：Huanghuai University，Zhumadian 463000，China

Abstract： In Vehicle Ad hoc Networks，Vehicle-to-Vehicle communication is able to transmit emergency message. However, traditional broadcasting algorithm introduces the Request to Broadcast and clear to Broadcast handshake mechanism. Meantime, after broadcasting message, it need acknowledge process, which reduces the transmission speed of emergency message, increase the transmission delay. Therefore, a new broadcasting emergency message algorithm is proposed. It uses Signal-to-Noise Ratio and location information to compute the contention window sizes, and randomly choose a time slot from the contention window sizes to transmit the emergency message. It avoids the RTB/CTB handshake mechanism. When the source node received the rebroadcasted emergency message, it means that emergency message has been successfully transmit, which inhibition of source node to broadcast an urgent message indicators, and avoid the ACK, so as to improve the transmission efficiency and speed, reduce the transmission delay.

Key word：
VANETs

broadcast

Request to Broadcast

Clear to Broadcast

acknowledge

emergency message

contention window

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The intrusion detection of zombie SMS based on artificial immune system

DOI：10.16157/j.issn.0258-7998.2015.07.029

Author：Xie Lixia，Zhao Binbin

Author Affilications：School of Computer Science and Technology, Civil Aviation University of China, Tianjin 300300，China

Abstract： This paper proposes a detection model of Zombie SMS based on artificial immune for the increasingly active status of mobile botnet. The model contains two kernel modules. The SMS filtering module compares the information of SMS with the blacklist for primary filtration. The SMS recognition immune module quantifies the signature of message as antigen, uses the real-valued negative selection algorithm to generate antibody and identifies the zombie SMS with the degree of closeness between antigen and antibody, lastly updates the antibody according to the feedback of user. The results showed that the model had higher detection rate which proved its feasibility.

Key word：
zombie SMS

artificial immune

real-valued negative selection

Euclidean distance

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Cloud distributed adaptive real time resource monitoring with low resource cost

DOI：10.16157/j.issn.0258-7998.2015.07.030

Author：Zheng Jianqiu，Zheng Ziwei

Author Affilications：Xiamen City University，Xiamen 361008，China

Abstract： The server end of distributed cloud computing has a huge amount of data, thus a huge sample need to be sampled by monitoring algorithm, lead to a large amount of compute cost and resource cost, aimed at that, a new adaptive monitoring two phase approach is proposed. Firstly, in training phase, moderate amount of resource samples are sampled, and the resource variety relative threshold is computed, and the quality value of the resource variety is computed; then, in the adaptive monitoring phase, the sample interval is updated with consideration of resource variety situation with the algorithm of training phase, so that the adaptive sampling interval is realized. Experiments result show that the proposed algorithm has better monitoring quality than static monitoring algorithm, at the same time, the proposed algorithm has lower cost overhead.

Key word：
resource cost

real time monitoring

cloud computing

big data

View(4490)

The administration for the expert rules in the industrial control anti-crisis system

DOI：10.16157/j.issn.0258-7998.2015.07.031

Author：Li Linfeng1，Fang Zhiqi1，Kang Wei1，Zhu Tingshao2，Xu Xinguo1

Author Affilications：1.NCSE，Beijing 100083，China； 2.Institute of Psychology，CAS，Beijing 100101，China

Abstract： It needs a series of legal actions to achieve the anti-crisis process of the industrial control system. We propose to show the anti-crisis process with the finite state machine and use expert rules base to manage the rules hidden in the finite state machine. The management of the expert rules involves the editing, the optimization ,the validation and the preservation of the rules. The editing of the rules depends on the expert system. The optimization of the rules depends on Karnaugh map. The preservation of the rules depends on Extensible Markup Language(XML). The examples show that it is accurate and efficient to use these techniques to manage the rules.

Key word：
anti-crisis system

finite state machine

expert Rule

management of the rules

View(5832)

Maximum likelihood estimation and Naive Bayes classifier based fault detection in WSN

DOI：10.16157/j.issn.0258-7998.2015.07.032

Author：Jing Mingmin，Xiao Li，Yang Chuanshu

Author Affilications：Research Institute of Petroleum Engineering，Research Department of Information and Standardization Beijing 100101，China

Abstract： Fault nodes in WSN lead to longer transmit delay and more energy consumption, and lead to problems such as network congestion, aimed at that, a new maximum likelihood and Naive Bayes classifier based fault diagnosis and location algorithm for WSN is proposed. Firstly, a large amount of features are abstracted from the protocol part of the data package, and the marginal probability is estimated and the Naive Bayes classifier is set up, and the condition probability is estimated by maximum likelihood estimation. In the detection phase, the transmission time are compared with threshold to adjust the fault node, then, the Naive Bayes classifier is used to detect the fault nodes, at last, the nodes are classified successfully.

Key word：
maximum likelihood estimation

Naive Bayes classifier

fault detection

wireless sensor network

View(11764)

Power Supply Technology and Its Application

Design of active-balance system for lithium battery pack based on SOC

DOI：10.16157/j.issn.0258-7998.2015.07.033

Author：Wang Qiuting，Qi Wei，Xiao Duo

Author Affilications：Department of Information Engineering，Zhejiang University City College，Hangzhou 310015，China

Abstract： This paper studies the working state and work performance of lithium battery pack. The active balance system is designed based on electronic technology and computer technology. The active balance method based on battery SOC(State of Charge) value is proposed. Our new method includes two premises, the dynamic model of battery pack and the accurate SOC value based on Unscented Kalman Filtering(UKF) algorithm. The experiments are operated using 18650-type lithium battery and the experiments results show that the new balance circuit and active balance method have better real-time performance and more accurate control performance. Besides, these better performances can improve the energy utilization rate of electric vehicle.

Key word：
lithium battery pack

SOC

active balance system

UKF

View(9742)

A dynamic optimization control method of BESS considering wind power forecasting

DOI：10.16157/j.issn.0258-7998.2015.07.034

Author：Yuan Hong1，Li Jianxiang1，Liu Haibo1，Zhang Huadong2，Gao Yuming2

Author Affilications：1.State Grid Shandong Electric Power Research Institute, Jinan 250002，China； 2.State Grid Shandong Electric Power Company，Jinan 250002，China

Abstract： As to great accuracy improvement of the very short-term wind power forecasting, a novel dynamic optimal control algorithm based on the wind power forecasting is proposed for BESS smoothing wind power fluctuations. Taking variety of factors into consideration, the operating principle is built based on the wind power information in advance, aiming to minimize the offset of SOC as well as considering the performance of the storage media to get the optimal control mode of the next control step, which exists the progressive control principle. The proposed method is verified by the operation data from actual wind power that it can achieve the effective control of BESS and has the practical application value.

Key word：
BESS

dynamic

optimization

control

renewable energy

View(7784)

Sliding mode control of buck converter based on double integral sliding surface

DOI：10.16157/j.issn.0258-7998.2015.07.035

Author：Li Kai，Li Jianbing，Zhou Dongfang，Zheng Kai

Author Affilications：College of Information Systems Engineering，Information Engineering University，Zhengzhou 450001，China

Abstract：In this paper, the space average model of the buck converter is established, which takes the Equivalent Series Resistance(ESR) of capacitor and the ESR of inductor into account. The result of simulation is consistent with the result of circuit model, which proves that the space average method is accurate. Then based on the model, PID controller and PWM sliding-mode current controller are designed, the sliding-mode controller has double integral sliding surface and the current is made use of. Experiment indicates that when the load changes suddenly, the PWM sliding-mode current controller with double integral sliding surface has better dynamic response and steady-state error adjustment feature.

Key word：
PID control

PWM control

mutation load

double integral sliding surface

current control

View(6572)

Study on improved one-cycle control on SIDO-buck converter

DOI：10.16157/j.issn.0258-7998.2015.07.036

Author：Li Liangguang，Zheng Jia，Zhou Jian，Song Zhongmin，Xu Liangcheng

Author Affilications：School of Electrical and Information Engineering，Anhui University of Science and Technology，Huainan 232001，Chin

Abstract： SIDO-Buck is a kind of converter using an inductor to achieve dual-output with low power components and high efficiency advantages，but it has a cross between the branches and a big ripple voltage, making the output voltage instability. The different modes and common-mode voltage leads current-control loop compensation slope design problems because of the introduction of the difference between the inductor current. This paper studies another control strategy without current loop to achieve stably single-cycle SIDO-Buck converter output，and establishes system model of single-cycle control SIDO-Buck converter closed-loop. The feasibility of a single-cycle control SIDO-Buck converter of the strategy is verified by simulation and experiment.

Key word：
portable electronic system

SIDO-Buck

single-cycle control

diffential/common voltage mode

View(9750)

Modeling of the dual-active bridge DC-DC converters based on generalized state averaging

DOI：10.16157/j.issn.0258-7998.2015.07.037

Author：Jiang Xiaoping1，Wei Libin1，Peng Chaoyang1，Luo Zhongge2，Sha Guanglin1

Author Affilications：１.School of Mechanical Electronic & Information Engineering，China University of Mining & Technology(Beijing)， Beijing 100083 China； 2.China State Grid Beijing Urban District Power Supply Company，Beijing 100037，China

Abstract：Bidirectional DC/DC converter is critical devices of electric vehicles and new energy，it′s more meaningful to control accurately and efficiently. Among them, the key for designing high performance controller is to establish a precise mathematical dynamic model of dual active converter. This paper firstly elaborates generalized state modeling method based Fourier transform. Then according to the state description of dual active bridge converter in time-domain，it analyses dual active bridge converter steady state characteristics based on generalized state average, and establishes dynamic small-signal model. At last, by comparing the simulation of generalized veraging state method to the actual topology output of the steady state error，it′s validated that the model based generalized method is more accurate and reliable，and provides a theoretical basis for the analysis of the topology controller design.

Key word：
bidirectional

dual-active full-bridge DC-DC converter

generalized state space averaging

modeling

View(10796)

Design of single phase series active power filter based on FFT

DOI：10.16157/j.issn.0258-7998.2015.07.038

Author：Meng Yanjing，Zhou Peng，Wang Su′e

Author Affilications：College of Electrical and Information Engineering, Shaanxi University of Science & Technology, Xi′an 710021，China

Abstract： This paper designs a kind of single phase series active power filter(APF) based on FFT, which has fast dynamic response, without constraints on conditions of load operating and can compensate the low-order harmonics. The frequency, amplitude and phase of harmonics are obtained by FFT analysis，and a harmonic signal is produced by means of inverter, of which the amplitude and frequency are equal to the grid voltage harmonics, but phase is opposite. Furthermore the zero crossing detection circuit is optimized to make it has better anti interference performance and no phase difference. The results of the experiment show that the active power filter can filter majority of the harmonic, and the THD of grid voltage is less than 3%.

Key word：
APF

FFT

harmonic compensation

filter

View(7474)

Computer Technology and Its Applications

The design and implementation of test data processing system based on Hadoop

DOI：10.16157/j.issn.0258-7998.2015.07.039

Author：Liu Youyao，Li Bin

Author Affilications：Design Center of Application-Specific Integrated Circuits, Xi′an University of Posts and Telecommunications，Xi′an 710061，China

Abstract： This paper proposes a Hadoop-based software framework for massive testing data processing scheme. Based on the related technology of Hadoop distributed system architecture, Hadoop distributed file system and MapReduce programming model, it designed and implemented the binary test data files to HDFS transport mechanism and the test data format conversion system based on MapReduce. Finally, it set up the experimental environment to verify the correctness of the whole system and did the distributed format conversion system performance evaluation. Compared with one node conversion in local, this system has higher efficiency and better expansibility in dealing with a huge amounts of data.

Key word：
semiconductor testing data

distributed storage

Hadoop

MapReduce

View(7946)

Design of embedded dual network routing and switching nodes based on ZigBee

DOI：10.16157/j.issn.0258-7998.2015.07.040

Author：Zhu Lei1，Dong Liang1，Xia Ying1，Sun Zhenlong2，Wang Yanchun1，Li Hui1

Author Affilications：1.Institute of Communications and Electronics Engineering，University of Qiqihar，Qiqihar 161006，China； 2.Institute of Enrollment Office，University of Qiqihar，Qiqihar 161006，China

Abstract：Aiming at the problem that the oil wells located remotely，the data can′t be real-time colleated and superrised，this paper uses WSN technology, through the ZigBee ad-hoc network combined with the Internet,which can make oil field collected data transfer through the exchange nodes. The upper machine and lower machine system test show that the system has the advantages of high data processing capabilities, the strong network signal and convenient system maintenance, and the system has good application prospect in oil field monitoring data.

Key word：
ZigBee

data collection

switching nodes

wireless network

View(12552)

Design of decoupling capacitor network based on hybrid GA

DOI：10.16157/j.issn.0258-7998.2015.07.041

Author：Wang Baopo1，2，3，Du Jinsong1，3，Tian Xing1，3，Bi Xin1，3

Author Affilications：1.Shenyang Institute of Automation，Chinese Academy of Sciences，Shenyang 110016，China； 2.University of Chinese Academy of Sciences，Beijing 100049，China； 3.Key Laboratory of Liaoning Province on Radar System and Application，Shenyang 110179，China

Abstract： Combined with the design method based on target impedance, Hybrid GA(Genetic Algorithms) was applied to the PDN(Power Distribution Net) decoupling capacitor network design to optimize the types and the required number of decoupling capacitors. The result was compared to that of the standard GA and the traditional design method, and then verified by the power integrity simulation tools of Cadence. It avoids the tedious process of the traditional design to repeatedly modify and validate with the aid of EDA tools, and shows less design redundancy, providing a reference for PDN high frequency circuit design.

Key word：
PDN

hybrid genetic algorithms

decoupling capacitor

PCB

design optimization

View(14804)

Design and simulation of quadrotor attitude control system based on double-loop sliding mode

DOI：10.16157/j.issn.0258-7998.2015.07.042

Author：Cai Weiping1，Hu Yueli1，2，Yang Wenrong2，Ran Feng2

Author Affilications：1.College of Mechatronic Engineering and Automation，Shanghai University，Shanghai 200072，China； 2.Microelectronic Research and Development Center，Shanghai University，Shanghai 200072，China

Abstract： A control system design scheme based on the double-loop sliding mode method is proposed for the issue that the attitude of the four-rotor is difficult to quickly track the actual control instructions, and the stability of the traditional linear method is not satisfying, the control law with a simple sliding mode is difficult to achieve. Through the establishment of attitude dynamic model of the quadrotor，the control law of the attitude angle and angular velocity is deduced. Finally, the MATLAB simulation for the scheme is analysed based on the hardware experimental platform of a quadrotor built in laboratory. The results show that the proposed control algorithm is effective and feasible, attitude tracking is more rapid and accurate compared to the conventional PID and backstepping control method.

Key word：
quad-rotor unmanned aerial vehicle

sliding mode

attitude control

MATLAB

View(15706)

Application in blood feature extraction with Hilbert-Huang transform

DOI：10.16157/j.issn.0258-7998.2015.07.043

Author：Luo Liang，Long Wei，Li Fugui，Zhan Conglai

Author Affilications：School of Information and Engineering，Nanchang University，Nanchang 330031，China

Abstract： This paper proposes a method that using Hilbert-Huang transform(HHT) to analyze the characteristic of blood cell signal. This method makes empirical mode decomposition and the Hilbert transform for blood cell signal. Extracted the signal average strength, the center of mass and energy contribution of spectrum as a frequency domain characteristics, and combined with time domain characteristics of the signal, it finally completes the recognition of the pulse signal with blood cell′s eigenvector. The accuracy of using HHT identification algorithm is 94.33% while analog circuit method is 72.33%. The comparability is achieved by 98.5% and all of the correlation coefficient are more than 94% compared with MYTHIC 18. According to experimental results, this method can effectively improve the counting accuracy and classification accuracy of hematology analyzer.

Key word：
blood cell signal

feature extraction

empirical mode decomposition

frequency domain characteristics

Hilbert-Huang transform

cell classification

View(7080)

The new system of seasonal load user access grid in mountainous area

DOI：10.16157/j.issn.0258-7998.2015.07.044

Author：Zhang Linyao1，Wu Han2，Wu Guilian1，Li Ming3，Rong Zhenzhong3，Wang Zongli3，Liu Jun3

Author Affilications：1.Power Economic Research Institute of Fujian Electric Power Company Limited，Fujian 350012，China； 2.Electric Power Research Institute of Fujian Electric Power CO.，LTD，Fujian 350012，China； 3.Shandong Guoyan Electric Power Technology CO.，LTD，Jinan 250101，China

Abstract：This paper first follow the "safe, reliable, economic, reasonable" principle, and then through the analysis of the characteristics of low-voltage distribution grid in the mountainous areas of Fujian and Fujian mountain load characteristics, combined with the general system of user access, use the load distance theory, proposed user access system suitable for the Fujian mountainous area of the seasonal load, in order to alleviate seasonal load of users of the "low voltage" problem.

Key word：
user access

seasonal load

load distance

View(5278)

The study of mountain area distributed generation optimal access capacity and position

DOI：10.16157/j.issn.0258-7998.2015.07.045

Author：Xuan Juqin1，Zhang Linyao2，Wu Guilian2，Li Ming3，Wang Zongli3，Liu Jun3

Author Affilications：1.State Grid Fujian Electric Power CO.，LTD，Fuzhou 350012，China； 2.Power Economic Research Institute of Fujian Electric Power Company Limited，Fuzhou 350012，China； 3.Shandong Guoyan Electric Power Technology CO.，LTD，Jinan 250101，China

Abstract： The grid can be influenced by different access capacity and position of distributed generation, how to determine the optimal access capacity and position is the key to keeping the grid economic running. The model of Fujian mountain network loss objective function is established in this paper, considering the power flow with the access of distributed generation, the power and voltage are the constraint conditions. Then, the firefly algorithm is proposed to getting the optimal access capacity and position of the distributed generation, the algorithm is simple and has better ability for global optimization. The feasibility of firefly algorithm is validated through the case analysis.

2015 No. 07

Publish Date：2015-07-06

ISSN：0258-7998

CN：11-2305/TN

Review and Comment

Key word： DIMA military data bus TTP/C View(14736)

Key word： LED micro array device micro display MEMS View(10798)

Key word： d present challenges of these sensors are analyzed. Key words： View(20698)

Embedded Technology

Key word： OTSU pitch measurement FPGA image processing NIOS II View(16322)

Key word： DALI infrared remote control WiFi μC/OS-II View(12370)

Key word： LDPC decoder 60 GHz simultaneous two-layer iteration high throughput View(6936)

Key word： attitude determination ARM modularization software View(7252)

Key word： storm surge ARM9 Linux real-time monitoring signal processing View(9760)

Key word： service-oriented message pipeline heterogeneous processing View(7874)

Key word： high resolution graphics display hardware acceleration sign processing state machine View(6282)

Microelectronic Technology

Key word： type A RCCBs discreteness of the minimum tripping current reliability View(13490)

Key word： naked-eye 3D 3D subtitles FPGA Verilog View(10384)

Key word： DC-DC voltage converter linear-assisted switching converters View(5992)

Key word： high-security low power dual-interface smart card View(7250)

Measurement Control Technology and Instruments

Key word： camera stabilized platform variable structure control friction PID View(5548)

Key word： gesture recognition surface electromyography online semi supervised Kohonen network data editing View(7136)

Key word： TDC-GP22 ultrasonic heat meter low power high precision W reflective View(16190)

Key word： radar target recognition high range resolution profile sparse decomposition redundant dictionary View(9146)

Key word： smart electricity meter FM3308 microprocessor infrared communications View(6846)

Key word： RFID sim300C multifunction View(6656)

Key word： AES storage testing VHDL encryption system View(11898)

Key word： data links of UAV unsymmetrical information integrative transmission anti-interference View(9200)

Key word： wireless Mesh networks distributed routing algorithm channel assignment View(7394)

Key word： BICM-ID PNC convolutional coding joint design View(9086)

Key word： polar codes high-order modulation coded modulation parallel channels View(8432)

Key word： 40 GHz reflection coefficient desktop materials link loss View(6164)

Key word： frequency domain interference suppression measurement accuracy narrowband interference surveying receivers View(6672)

Key word： VANETs broadcast Request to Broadcast Clear to Broadcast acknowledge emergency message contention window View(8110)

Key word： zombie SMS artificial immune real-valued negative selection Euclidean distance View(3954)

Key word： resource cost real time monitoring cloud computing big data View(4490)

Key word： anti-crisis system finite state machine expert Rule management of the rules View(5832)

Key word： maximum likelihood estimation Naive Bayes classifier fault detection wireless sensor network View(11764)