Special Column-Space-Ground Integrated Technology

Research on architectural enhancements for integrating satellite into 5G networks

DOI:10.16157/j.issn.0258-7998.223015

Author:Wang Hucheng,Xu Hui,Sun Shaohui

Author Affilications:Datang Mobile Communication Equipment Co.,Ltd.,Beijing 100083,China

Abstract:Integration of satellite and terrestrial networks would bring better coverage, more flexible networking and more robust network architecture for 5G, which makes the 5G network connecting everything possible, and then becomes an important evolution direction for 5G network. This paper firstly introduces the necessity to support integration of satellite and terrestrial networks in B5G era, then analyses the developing phases and technical status of 5G network integrating with satellite from network architecture and technical standard point of view. Based on the technical status, the paper further analyses issues on system architecture evolution that 5G network integrating with satellite faces, and puts forward some architectural enhancement solutions, including 5G system enhancement on supporting satellite backhaul and User Plane Function(UPF) on-board.
Key word:
integration of satellite and terrestrial network
5G
system architecture

Research on 6G-oriented LEO satellite edge computing architecture

DOI:10.16157/j.issn.0258-7998.222988

Author:Wu Jian,Jia Min,Zhang Liang

Author Affilications:School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin 150006,China

Abstract:Mobile edge computing(MEC) is proposed to meet the growing computing demands.Driven by ubiquitous connectivity and global regional coverage, Low Earth Orbit(LEO) can break through geographical restrictions and achieve global wireless coverage, which is an indispensable choice for future 6G mobile communication systems. Therefore, this paper considers the formation of edge computing satellites by placing edge servers on satellites, and proposes a system architecture for satellite edge computing, which can provide computing services for users in remote areas on the earth or users who need emergency communication in extreme environments.
Key word:
mobile edge computing
LEO satellite
system architecture

The key technical analysis of the roll-out solar array

DOI:10.16157/j.issn.0258-7998.222790

Author:Zhang Wei,Lan Zhicheng,Wu Zhicheng

Author Affilications:Tianjin Institute of Power Sources,Tianjin 300384,China

Abstract:Solar array is the only energy source for the majority of satellites, in view of the great need of the 6G space communication, under the premise that the output power is constant, satellite solar arrays need to further reduce the mass and volume. Roll-out solar array has the characteristics of lightweight, high-efficiency, and no need of the unfold drive, which has become an important direction for the development of space solar arrays. This paper introduces the development process of roll-out solar arrays and the development status of roll-out solar arrays in the domestic and foreign. The key technologies are sorted out to provide a reference for the selection of 6G satellite solar arrays and the development of roll-out solar arrays in the future.
Key word:
solar array
6G space communications
satellite
roll-out solar array

Review and Comment

Survey of image style transfer based on neural network

DOI:10.16157/j.issn.0258-7998.222706

Author:Liu Jianfeng,Zhong Guoyun

Author Affilications:School of Information Engineering,East China University of Technology,Nanchang 330013,China

Abstract:In order to promote the research of image style transfer technology based on neural network, the main methods and representative work of image style transfer based on neural network are summarized and discussed in this paper. This paper reviews the traditional style transfer algorithms, introduces the basic principles and methods of the main image style transfer based on neural network in detail, analyzes the application prospect of the related field of image style transfer based on neural network, and finally summarizes the existing problems and future research direction of the image style transfer based on neural network.
Key word:
neural network
image style transfer
texture synthesis

The development trend,focus and path of digital village

DOI:10.16157/j.issn.0258-7998.222665

Author:Song Shuyuan1,Fan Guohao2,Wang Yan1,Xia Lei1,Zhang Min1

Author Affilications:1.China Electronic System Technology Co.,Ltd.,Beijing 100141,China;2.China Electronics Corporation,Shenzhen 518057,China

Abstract:The construction of digital village is a strategic direction for rural revitalization, and more importantly, an important support for the landing of digital China. The development of China′s village has characteristic political, economic and cultural forms, and also carries a unique development mission in the national strategy. Around the urgent demand of expanding domestic demand, accelerating factor flow and smoothing the large domestic circulation, it is urgent to promote the upgrading of digital village construction. The digital city has formed a good foundation and advantages in the development environment, core technology, market space and supervision guarantee, which becomes the core leading and important guarantee for the development of digital village.
Key word:
digital village
digital city
digital transformation
urban-rural integration

Artificial Intelligence

Classification of α wave motor imagery based on SVM and PCA

DOI:10.16157/j.issn.0258-7998.211723

Author:Cai Jing1,Liu Guangda1,Wang Yaoyao1,Gong Xiaoyu2

Author Affilications:1.College of Instrumentation & Electrical Engineering,Jilin University,Changchun 130012,China; 2.Educational Technology Center,Jilin University,Changchun 130061,China

Abstract:A feature screening method based on alpha wave and principal component analysis was proposed to solve the problem that the weakly correlated feature quantity would affect the classification accuracy in EEG motor imagery classification. Based on brain computer interface system, the EEG signals corresponding to left and right motor imagination tasks were generated by auditory stimulation and processed by wavelet packet decomposition, and then the α band signals of the EEG were reconstructed, so as to extract the α waveforms and extract the statistical features. Combined with PCA technology and SVM method, the weak correlation features are eliminated and classified. According to the selected data, the accuracy of the results is higher, and the accuracy of signal classification is improved from 90.1% to 94.0%.
Key word:
wavelet packet decomposition
SVM
motor imagery
PCA
EEG

Air quality prediction method based on improved BCCSA and deep LSTM

DOI:10.16157/j.issn.0258-7998.222731

Author:Wei Shiyue,Xu Hongzhen

Author Affilications:School of Information Engineering,East China University of Technology,Nanchang 330013,China

Abstract:The existing air quality prediction methods rarely consider seasonal factors, and the prediction effect is not good. Therefore, an air quality prediction method based on improved binary chaotic crow search algorithm(BCCSA) and deep long short term memory neural network(LSTM) is proposed. Firstly, the method of seasonal adjustment is proposed to preprocess the collected original air quality data in order to eliminate the influence of season on prediction. Then, an improved BCCSA is proposed to optimize the air quality data. Finally, the self-attention mechanism is added to the deep LSTM to predict the air quality data. The experimental results show that this method can effectively improve the prediction accuracy of air quality.
Key word:
air quality
seasonal adjustment
improved binary chaotic crow search algorithm(BCCSA)
deep long short term memory(LSTM)
self-attention mechanism

Predict the carcinogenicity of compounds with SGCN

DOI:10.16157/j.issn.0258-7998.212080

Author:Wei Ruobing,He Jiafeng,Qiu Xiaofang,Liu Qi

Author Affilications:College of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China

Abstract:The rapid increase of the number of cancer patients has attracted worldwide attention. Researchers are very concerned about the assessment of the carcinogenicity of compounds, but this is extremely challenging. In this paper, 341 kinds of experimental data were obtained, and the spatial atom feature combined with the spatial graph convolutional network(SGCN) was used to establish a model that could predict the carcinogenicity of compounds. The results showed that when compared to other models, the classification model of the SGCN was more suited to predicting the carcinogenicity of compounds and had an overall classification accuracy of 96.9%, which showed that the SGCN model could accurately classify chemicals and had considerable potential in practical applications.
Key word:
spatial graph convolutional network
classification model
carcinogenicity of compounds

Microelectronic Technology

Design of Wishbone-SPI verification platform based on UVM

DOI:10.16157/j.issn.0258-7998.212337

Author:Liu Sentai,Pang Yu,Wei Dong

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

Abstract:As the complexity of the chip increases, the time it takes to verify the chip in the design process continues to increase. Aiming at the poor reusability and low coverage of traditional verification platforms, this paper uses Universal Verification Methodology(UVM) to design the Wishbone-SPI verification platform, uses UVM components to flexibly build the verification platform, completes the standard verification framework, and designs constrained random stimulus, automatically counting function coverage. The simulation results show that the functional coverage of the verification platform reaches 100%, and shows that the platform has good configurability and reusability.
Key word:
UVM
SPI
Wishbone
verification platform

Analysis and repair of timing deviation caused by filling dummy metal in advanced process chip

DOI:10.16157/j.issn.0258-7998.212353

Author:Wang Qiushi,Meng Shaopeng,Wu Hongqiang

Author Affilications:Anhui Siliepoch Technology Co.,Ltd.,Hefei 230031,China

Abstract:In the finish stage of the chip physical design, in order to meet the metal density design rules, dummy metal fill needs to be added. The dummy metal fill generates external parasitic capacitances, which will deteriorate chip timing results. In process nodes above 40 nm, timing deviation caused by these external parasitic capacitances is about 0.12%, even smaller than the mismatch between STA and SPICE simulation, we usually ignore it. However, this timing deviation must be repaired in advanced process nodes with FinFET structure. Taking a industrial DSP process chip with FinFET structure as an example, this paper uses QRC to compare the parasitic capacitance changes before and after adding dummy metal fill; uses Tempus to analyze the reasons for the timing deviation of the chip; finally proposes a method for repairing timing deviation based on Innovus, the timing result is verified by signoff. This method effectively improves the efficiency of timing closure.
Key word:
advanced process node
physical design
dummy metal fill
parasitic capacitance
timing repair

Measurement Control Technology and Instruments

A 3D sensor based deflection correction algorithm for belt layer

DOI:10.16157/j.issn.0258-7998.212139

Author:Su Ming1,Fan Wenqiang1,Xiao Dong2

Author Affilications:1.School of Opto-Electronic Information Science and Technology,University of Yantai,Yantai 264000,China; 3.GuoLong Intelligent Technology(WeiHai) Co.,Ltd.,Weihai 264200,China

Abstract:In order to solve the problem that the center position of the belt layer is offset during transmission, a 3D sensor based belt layer deviation correction algorithm is proposed in this paper. Firstly, the contour data collected by 3D sensor is preprocessed to make the data smoother. Secondly, in the process of correcting deviation, the belt layer is divided into three regions: upper, middle and lower regions, the upper and lower regions adopt fixed edge, and the middle region adopts fixed center. The real-time correction is carried out by calculating different positions in three different regions. Finally, through MATLAB simulation, the correction accuracy of the algorithm can reach within 1 mm, which is better than the traditional unilateral correction accuracy and correction stability.
Key word:
3D sensor
deviation correction system
data processing
belt layer rectifying deviation

Design of radio monitoring platform based on VPX open architecture

DOI:10.16157/j.issn.0258-7998.212339

Author:Lu Chao,Mi Wenlong,Hu Dingrui

Author Affilications:Southwest China Institute of Electronic Technology,Chengdu 610036,China

Abstract:The radio monitoring system puts forward higher requirements for signal search, interception and identification capabilities. The traditional radio monitoring system software and hardware have immature standardization and modularization, strong customization, and poor versatility, and it is difficult to meet future equipment needs. An open radio monitoring system based on VPX combined with the idea of software radio is designed, and the software and hardware architecture of the platform is intensively studied. Finally, a verification platform is built for testing the transmission and system performance, which verifies the feasibility of this platform.
Key word:
software defined radio
VPX architecture
software service

Communication and Network

Design and implementation of QoS differential service scheme based on 4/5G converged network

DOI:10.16157/j.issn.0258-7998.212211

Author:Zhu Jialin1,Zhang Min1,Li Kai1,Liu Xin2,Zhang Liwei2

Author Affilications:1.Research Institute of China Telecom Co.,Ltd.,Beijing 102209,China;2.China Telecom Co.,Ltd.,Beijing 100010,China

Abstract:With the deployment and commercialization of 5G networks, providing differentiated services for different users in the existing network has become a research hotspot in the industry based on the different needs of the business for network capabilities. Therefore, this paper proposes a method to realize the converged deployment and unified invocation of 4/5G network quality of service(QoS) differentiated services. This scheme includes the network architecture of 4/5G network QoS differentiated service fusion deployment, the method of QoS platform server to terminal 4/5G user automatic identification, and the end-to-end process of 4/5G converged QoS service. The design of this scheme enables the third party to directly call the QoS capability of the operator using the unified scheduling interface of the whole country without distinguishing the 4/5G form of the user, giving full play to the network advantages and value of the operator.
Key word:
4/5G network
QoS
converged deployment
unified invocation

Pseudo code estimation of LSC-DS-CDMA signal with residual frequency offset

DOI:10.16157/j.issn.0258-7998.212094

Author:Pan Weiyu1,Zhao Zhijin1,2

Author Affilications:1.School of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China; 2.State Key Lab of Information Control Technology in Communication System of No.36 Research Institute, China Electronic Technology Corporation,Jiaxing 314001,China

Abstract:Aiming at the problem of estimation of long and short code direct spread code division multiple access signal with residual frequency offset, firstly, the signal matrix is constructed by using the periodic piecewise received signals of short code and long code. Secondly, the eigenvalue decomposition method is used to obtain the user eigenvector sub-space with residual carrier, and the digital phase-locked loop is used to track and eliminate the residual frequency offset. Then, the Givens matrix is used to rotate the load matrix composed of eigenvectors, and a whale optimization algorithm combined with random difference and simulated annealing is proposed to find the best rotation angle to minimize variance, so as to estimate the composite code segments of each user and splice them in turn. Finally, Berlekamp-Messay algorithm and correlation operation are used to estimate the long code and short code of each user. Simulation results verify the effectiveness of the proposed algorithm for pseudo code estimation of LSC-DS-CDMA signals with residual frequency offset.
Key word:
long and short code direct spread code division multiple access
digital phase locked loop
Givens rotation
whale optimization algorithm
Berlekamp-Massey algorithm

Computer Technology and Its Applications

Design and implementation of quality inspection information management system based on Cloud Native

DOI:10.16157/j.issn.0258-7998.211839

Author:Chen Bo,Wu Yunfeng,Lu Kai

Author Affilications:The 6th Research Institute of China Electronics Corporation,Beijing 100083,China

Abstract:With the complexity of quality inspection information management business,the existing quality inspection information management systems have so many problems, such as insufficient processing capacity for big data, high manual operation error ratio and poor scalability. This paper proposed a quality inspection information management system based on Cloud Native, then analyzed and researched on the Cloud Native technology, and clarified the principles and characteristics of Cloud Native technology. Combined with the actual use of quality inspection information management business, the Cloud-Native-based quality inspection information management system was designed and implemented in detail. Finally, the function and performance of the system were tested to verify the effectiveness of the overall design scheme.
Key word:
Cloud Native
quality inspection
information management system

Design and implementation of fear emotion inducing system based on high-altitude VR interactive scene

DOI:10.16157/j.issn.0258-7998.211771

Author:Cong Lin1,Yang Jinghua2,Sun Jicheng1,Cheng Shan1,Zhang Taihui1,Hu Wendong1

Author Affilications:1.School of Aerospace Medicine,Air Force Medical University,Xi′an 710032,China; 2.Department of Basics,Air Force Engineering University,Xi′an 710051,China

Abstract:A fear emotion inducing system is designed and implemented based on high-altitude VR interactive scene, which can provide lower limb somatosensory interaction. By the customized carbon structural steel springboard and its double barrel spring unit at the bottom, the system can produce human multi angle stress shaking after walking and trampling, and also can realize the shaking interaction in the virtual high-altitude scene with matched VR tracker. The system has the function modules of interactive display, pedal matching, virtual scene and experiment management, which can automatically store the physiological data of human, spatial position,time information and task performance during the induction process.
Key word:
virtual reality
somatosensory interaction
fear
emotional induction

Image encryption algorithm based on improved Clifford chaotic system

DOI:10.16157/j.issn.0258-7998.211584

Author:Zhang Wenyu,Xing Rongying,Li Guodong

Author Affilications:School of Mathematics and Computing Science,Guilin University of Electronic and Technology,Guilin 541004,China

Abstract:Information security is an increasingly concerned issue. As the carrier of information transmission, digital image contains a large amount of information. In order to improve the security of digital image transmission, this paper improves the Clifford system, analyzes the chaotic characteristics of Clifford system through chaotic attractor graph and Lyapunov exponent, and designs a new image encryption algorithm based on the improved Clifford system. Firstly, the plaintext is transformed into a binary matrix. The rows and columns of the binary matrix are circularly shifted. Then, the plaintext is divided into nine matrix blocks with different sizes, and each matrix block is scrambled. In block scrambling, chaotic sequences are used to scramble between blocks, while cyclic displacement scrambling is used to scramble within blocks which ensures that the position of each pixel has changed. Finally, the image is diffused to get the ciphertext. Simulation experiments and security analysis show that the algorithm is safe and reliable for image encryption.
Key word:
chaotic system
Clifford system
image encryption
block scrambling
diffuse

Application of PID algorithm by using filter in temperature control system

DOI:10.16157/j.issn.0258-7998.211847

Author:Yao Liping1,Liu Weizhang2,Wu Wenming1,Jiang Yangyang1,Lei Peng1,Tan Zhongwei1,Wang Kangning1, Li Guixiang1,Xu Fei1,Tang Yuanliang1,Wu Xinshe1,Huang Dequn1,Chen Jun1,Gu Heng1

Author Affilications:1.Institute of Medicine and Health,Guangdong Academy of Sciences,Guangzhou 510500,China; 2.College of Mathematics and Informatics,South China Agricultural University,Guangzhou 510642,China

Abstract:In order to make the response of the temperature control system more stable, the third-order discrete filter is introduced in PID control algorithm to filter the input signal, which eliminates the jitter noise and makes the outputs more steady. Besides, a temperature control system based on STM32 micro-controller is designed. The temperature acquisition module is composed of platinum resistance Pt1000 and MAX31865, and the temperature regulation module includes semiconductor cooler TEC and H-bridge logic. The computer software communicates with the cotrol system through USB serial port. The received real-time temperature data is used in PID control algorithm by introducing filter, and the output value is afterwards sent to the computer software to realize a closed-loop temperature control process. The experimental results show that the PID algorithm with filter outperforms PID combined with Bang Bang, differential first PID, step PID and variable integral PID, which improves the ability of anti-interference and has the practical value and application value in engineering temperature control.
Key word:
temperature control system
PID control
third-order discrete filter
semiconductor cooler TEC

Research on laser point cloud classification based on Light-BotNet

DOI:10.16157/j.issn.0258-7998.222725

Author:Lei Genhua1,Wang Lei1,2,Zhang Zhiyong1

Author Affilications:1.School of Information Engineering,East China University of Technology,Nanchang 330013,China; 2.Jiangxi Engineering Technology Research Center of Nuclear Geoscience Data Science and System,Nanchang 330013,China

Abstract:Three dimensional point clouds are widely used in robots and automatic driving. The research results of deep learning on two-dimensional images are remarkable, but how to use deep learning to identify irregular three-dimensional point clouds is still an open problem. At present, due to the complexity of the data of the scenic spot cloud itself, the uneven distribution of points caused by the change of the scanning distance of the point cloud, and the challenges caused by noise and abnormal points still exist. Aiming at the problems of low classification efficiency and low classification accuracy of the existing deep learning Network framework for laser point cloud data, a CNN Transform framework based on laser point cloud feature image and Light-BotNet is proposed. The framework is to extract the features of point cloud data, construct the point cloud feature image with adjacent feature points as the input of the network framework, and finally take Light-BotNet as the network framework model for point cloud classification training. The experimental results show that compared with most existing point cloud classification methods, this method can better improve the classification efficiency and accuracy of laser point cloud.
Key word:
point cloud feature image
BotNet
Transform
CNN
laser point cloud classification

Analysis of coal mining impact model based on HMM model

DOI:10.16157/j.issn.0258-7998.212273

Author:Li Weilong1,Wang Qing2,Liu Xin1,Zhang Canming1

Author Affilications:1.Anhui Academy of Coal Science,Hefei 230001,China;2.Anhui Xinhua University,Hefei 230000,China

Abstract:In view of the safety problem of rock burst in coal production and mining, an assessment and analysis of coal mining impact model based on hidden Markov(HMM) model was proposed. Data samples collected under normal and abnormal conditions in coal mining environment were selected as offline training samples to obtain parameters of pre-mining environment model. Then through real-time detection of coal mining data samples as online training samples, real-time data is sent to the pre-mining environment model for evaluation, and the maximum probability is obtained according to the maximum likelihood learning, and the current operating state of the system is obtained through matching. The experimental results show that the model has high reliability in the coal mining impact and the coal safety monitoring work is stable.
Key word:
rock burst pressure
hidden Markov model
off-line training
maximum likelihood

Embedded Technology

Design and experiment of a wearable functional electrical stimulation instrument for upper limbs

DOI:10.16157/j.issn.0258-7998.222527

Author:Su Dongnan1,2,Shang Peng2,Hu Zhigang1,Zeng Zilin1,Wei Feng2,Wu Jipeng2,Yang Delong2

Author Affilications:1.College of Medical Technology and Engineering,Henan University of Science and Technology,Luoyang 471000,China; 2.Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China

Abstract:Functional electrical stimulation has become a commonly used and effective method for the rehabilitation of stroke in hospitals. However, due to the large size of the therapeutic apparatus, the fixed training location, and the single electrical stimulation mode, a wearable four-channel functional electrical stimulator based on the STM32 chip was designed to solve the above problems. It needs to be able to control the electrical stimulation mode and parameters in real-time, and also to meet the upper limb rehabilitation training of patients at home. The electric stimulator system includes the STM32 main control chip, power management module, boost module, electric stimulation drive circuit, and serial screen human-computer interaction module. Experimental results show that the instrument can effectively cause muscle contraction, output electrical stimulation waveforms correctly, and achieve the curative effect of rehabilitation therapy.
Key word:
functional electrical stimulation
electrical stimulation parameters
upper limb
hardware

Research on method of real-time performance optimization of Loongnix operation system based on Loongson 2K1000

DOI:10.16157/j.issn.0258-7998.212461

Author:Yu Guanzhong,Wei Xiong,Tian Qingwang,Shi Xuming

Author Affilications:State Nuclear Power Automation System Engineering Corp,Shanghai 200241,China

Abstract:Because LoongnixOS is the time-sharing operating system, it cannot meet the requirement of high reliability in industrial automation application which requires to use real-time operating system(RTOS). On the basis of analysis of and study on defects of real-time performance in Linux kernel of LoongnixOS and the method to optimize real-time performance in RT-Preemption patch, the method of real-time transformation of LoongnixOS and optimizing real-time performance of LoongnixOS is put forward, in which a RT-Preempt-Linux kernel is a substitute for original Linux kernel of LoongnixOS. Self-developing real-time performance softwares and Cyclictest are utilized to verify the method. Results of test show that the method can be effective in improvement of real-time performance of LoongnixOS. Real-time performance, including process-switching time, thread-switching time and task-switching delay, of the LoongnixOS transferred to RTOS achieves the grade of microsecond.
Key word:
Loongson
Loongnix
Linux
RT-Preempt
real-time opration

Circuits and Systems

Generating high-resolution global unstructured meshes

DOI:10.16157/j.issn.0258-7998.222602

Author:Liu Zhuang,Huang Xiaomeng

Author Affilications:Department of Earth System Science,Tsinghua University,Beijing 100084,China

Abstract:The Spherical Centroid Voronoi tessellations(SCVT) are a kind of high-quality unstructured meshes, which are adopted by well-known earth system models at home and abroad. Internationally, the open source project Message Passing Interface SCVT(MPI-SCVT) has realized the parallel SCVT generation. However, although MPI-SCVT works well for the generation of general-resolution meshes, the use of MPI-SCVT presents several problems when the required mesh is of very high resolution, including the poor quality of initial mesh points, large data MPI communication problems, external library calling problems and I/O problems. For these problems, a set of solutions are proposed. Practice shows that the application of these solutions can successfully complete the generation of the global 1.9 km resolution grid, and the number of iterations is significantly reduced when reaching the same accuracy, which saves the calculation time.
Key word:
generation of unstructured meshes
centroid Voronoi tessellations
high resolution
iteration optimization

Design and simulation of vehicle entry detection circuit based on ground induction coil

DOI:10.16157/j.issn.0258-7998.212170

Author:Zhou Ya,Dai Wei,Zhang Xin,Xu Li

Author Affilications:China Key System & Integrated Circuit Co.,Ltd.,Nanjing 210000,China

Abstract:In the field of traffic Internet of Things, there is a business demand for road traffic flow information monitoring. The ground sensing coil is arranged on the road to sense the information of vehicles entering and provide initial data for the traffic Internet of Things. According to the working scene of ground induction coil, the working principle of ground induction coil is described. On this basis, a circuit of vehicle entry detection signal based on ground induction coil is designed. The signal acquisition circuit is mainly composed of tuning oscillation circuit, waveform shaping circuit and microprocessor. The design points of each module are introduced. PSpice software simulation shows that the circuit can effectively collect the state value change of ground sensing coil, so as to detect vehicle entry. It has high practical value and application prospect in the field of traffic Internet of Things.
Key word:
ground induction coil
entry detection
circuit design
PSpice simulation

Research on water floaters collection system based on Faraday waves

DOI:10.16157/j.issn.0258-7998.212222

Author:Zhang Xinjian1,Bi Yan1,Lu Yanmin1,Wu Yanping2,Yang Jiajun1,2,Yang Weihong1,Fan Juan1

Author Affilications:1.Mechanical and Electrical Engineering Department,Wenhua College,Wuhan 430074,China; 2.School of Mechnical Science & Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

Abstract:In order to improve living conditions in the town and solve the problems from garbage floaters on small-area water surface in landscape zones, this article, based on Faraday waves theory, designs a small-area water floaters collection automatic system device, which is consist of vibration source(to produce Faraday waves), floating platform and collecting device. This device utilizes single chip to output specific frequencies to the floating platform, and then makes the floaters which connected the floating platform to clap the water surface in order to produce waves in corresponding wavelength. This device is able to grab long-distance granules floaters on water surface. Under Faraday waves′ characteristic effect, granules floaters on water surface will move to a certain place according to relevant track, as a result, it is convenient for collecting device to salvage and recycle water surface garbage. This research result is able to collect granules floaters on small-area water surface without any second harm to the organism in the water. It is an economic, environment-friendly innovation.
Key word:
Faraday waves
floater
small-area water surface
environmental protection

Low-cost Coupon design based on PCIe Gen5 signal

DOI:10.16157/j.issn.0258-7998.211960

Author:Liu Tao,Zong Yanyan,Wang Qianhui,Qin Yuqian,Tian Minzheng,Yu Huaguo

Author Affilications:Inspur Electronic Information Industry Co.,Ltd.,Jinan 250101,China

Abstract:The development of digital technology is changing rapidly. In the new generation of server products, the PCIe Gen5 signal rate has reached 32 Gb/s. In order to ensure its signal integrity design, single-board loss monitoring is essential, and a good Coupon design is therefore particularly important. Traditional Coupons mostly use Litek probe technology, and wiring in a broken line. Although the technology is mature, there are still many problems such as large space occupation and poor data stability. Based on the low-cost requirements of product design, this paper researches on the low-cost Coupon design of PCIe Gen5 signal. Different wiring methods are analyzed and compared through theoretical analysis and simulation. Then the high-reliability Coupon wiring method is selected which can also takes up less space. The test fixture is also optimized which can also improve data stability. Experimental results show that the Coupon design method proposed in this paper not only takes up less space than traditional methods, but also has higher data stability. Therefore, this method is more conducive to the low-cost and high-reliability design of Coupons.
Key word:
PCIe
32 Gb/s
Coupon
phase difference
test verification

Space-Ground Integrated Technology

Industrial Ethernet Network

5G Vertical Industry Application

High Performance Computing

Key Technologies for 6G

FPGA and Artificial Intelligence

Innovation and Application of PKS System

5G Network Construction and Optimization

RF and Microwave

Edge Computing

Network and Business Requirements for 6G

5G and Intelligent Transportation

5G R16 Core Network Evolution Technology

Satellite Nevigation Technology

5G R16 Evolution Technology

5G Wireless Network Evolution Technology

5G Network Planning Technology

5G Indoor Coverage Technology

5G MEC and Its Applications

5G Co-construction and Sharing Technology

Expert Forum

5G and Emergency Communication

5G Slicing Technology and Its Applications

Industrial Internet

5G Terminal Key Realization Technology

5G and Artificial Intelligence

5G and Internet of Vehicles

Terahertz Technology and Its Application

Signal and Information Processing

Artificial Intelligence

5G Communication

Internet of Things and the Industrial Big Data

Electronic Techniques of UAV System

Power Electronic Technology

Medical Electronics

Aerospace Electronic Technology

Robot and Industrial Automation

ADAS Technique and Its Implementation

Heterogeneous Computing

2016 IEEE International Conference on Integrated Circuits and Microsystems

ARINC859 Bus Technology

FC Network Technology

Measurement and Control Technology of Bus Network

GJB288A Bus

Key Techniques of 5G and Algorthm Implement

IEEE-1394 Bus

Signal Conditioning Technology of Sensors

AFDX Network Technology

Discrete Signal Processing

Energy-Efficient Computing

Motor control

2012 Altera Electronic Design Article Contest