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2021 Vol. 39, No. 1

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Numeric Control Technology
Design of Absolute Encoder Interface Circuit Based on Beaglebone Black
ZHENG Chu-yue, ZHAO Chen
2021, 39(1): 1-5. doi: 10.19695/j.cnki.cn12-1369.2021.01.01
Abstract(587) PDF(208)
Abstract:
In order to improve the resolution and measurement accuracy of absolute encoder without increasing volume and weight, the interface circuit of absolute encoder is studied and designed. Among them, Beaglebone black based on AM3358 processor is selected as the Linux embedded development platform, the system control is unified in the open source framework of Python language, and the control signal is sent by the communication mode of SSI protocol, so as to detect the basic performance of absolute encoder. Through the test experiment, it is proved that the design scheme of the interface circuit of the absolute value encoder is feasible and has reliable measurement accuracy and resolution of the absolute value encoder.
Design and Realization of Anti-gravity Intelligent Suspension Speaker
YU Yang, ZHAO Jin-long, DANG Ke, LI Yao-tang, LI Jia-xin, ZHU Ling
2021, 39(1): 6-8. doi: 10.19695/j.cnki.cn12-1369.2021.01.02
Abstract(259) PDF(60)
Abstract:
The anti-gravity intelligent levitation speaker, the main control core design is based on the STC89C52 single-chip microcomputer, and the external circuit mainly includes a magnetic levitation control circuit and a wireless charging circuit. The core module is the magnetic levitation control circuit, which is based on Keil software and C language to complete program programming, uses PWM technology to drive the full bridge circuit and PID control algorithm to control the current. The speaker is suspen and in dynamic balance.
Exploration and Implementation of Innovative Practice Based on Industrial Robot System
LIN Xun-tao, SU Fa, LAI Guan-yu
2021, 39(1): 9-11. doi: 10.19695/j.cnki.cn12-1369.2021.01.03
Abstract(319) PDF(78)
Abstract:
In this paper, through the CRP - S80 - V2 control system and the connection between the ESTUN servo system, to build an industrial robot system, after drawing correct connection electric circuit schematic wiring diagram and equipment after the commissioning, to study the circuit control of industrial robot system, and further to understand and grasp industrial robot control system circuit system and the servo system of related knowledge, which can realize the development of students' innovation practice activity.
Analysis of Intelligent Technology Used in Hydropower Automation Transformation
FENG Xiao-rong
2021, 39(1): 12-14. doi: 10.19695/j.cnki.cn12-1369.2021.01.04
Abstract(173) PDF(41)
Abstract:
Intelligent technology is a new technology with information technology. It has the characteristics of high efficiency and scientificity. Therefore, the application of intelligent technology to hydropower automation transformation can continuously improve the quality and efficiency of the whole reconstruction work. In the next part of this paper, the intelligent technology used in hydropower automation transformation will be analyzed from each link, in order to provide the corresponding reference for the relevant industry.
Communication Technology
Research on Communication Technology of Robot in Industrial Pipeline
ZHONG Yong-xuan, CHEN Rui-hong, LIN Zi-han, ZHU Yan-zhao, LIANG Zhen-feng
2021, 39(1): 15-18. doi: 10.19695/j.cnki.cn12-1369.2021.01.05
Abstract(221) PDF(28)
Abstract:
Industrial pipelines are prone to leakage and blockage accidents, so the staff need to inspect and maintain the pipelines regularly.In view of this industry pain point,it is urgent to design and develop a pipeline robot to inspect the internal environment of the pipeline. Due to the small space, dark and closed inside the pipeline,the internal communication of the pipeline is prone to interference.Taking the pipeline robot communication as the research direction,the applicability of wired communication and wireless communication to pipeline machine is studied. This paper analyzes the interference and attenuation of wired communication, analyzes the interference of wireless communication, builds an experimental platform to complete the test of pipeline robot communication system, and provides theoretical basis for the selection of pipeline robot communication technology.
Application Analysis of Softswitch Technology in Communication Engineering
YU Zhen
2021, 39(1): 19-21. doi: 10.19695/j.cnki.cn12-1369.2021.01.06
Abstract(180) PDF(9)
Abstract:
In the current period, our country's economy shows a good development trend, which has laid a solid foundation for the development of communication engineering. From the perspective of the development status of communication engineering, the application of soft exchange technology needs to be paid close attention to. In this paper, the content, application and development prospect of soft exchange technology are comprehensively analyzed in order to maintain a more stable development of domestic communication engineering.
On the Role of Supervision in the Construction of Mobile Communication Core Network
WEI Hong-jun
2021, 39(1): 22-24. doi: 10.19695/j.cnki.cn12-1369.2021.01.07
Abstract(160) PDF(10)
Abstract:
With the rapid development of social economy, China's communication field has also been considerable development, mobile communication has entered the lives of thousands of households. At this stage, mobile 4G communication technology has been widely used in people's production and life, and China's communication technology personnel are committed to the application of 5G technology. However, in the construction process of mobile communication core network, due to the characteristics of strong specialization and high risk, the construction unit is easy to encounter some communication technology problems in the actual construction process. Only through collaborative management with the supervision unit can the overall quality and progress of mobile communication network construction be effectively ensured. In view of this, this paper focuses on the specific application of supervision in the construction of mobile communication core network, for reference.
The Adjacent Avoidance Effect and Circumvention Analysis of Mobile Communication Base Station Construction
WANG Wei, LONG Yi-fei, GUO Qiong, YANG Kai, LIANG Hai-yan
2021, 39(1): 25-27. doi: 10.19695/j.cnki.cn12-1369.2021.01.08
Abstract(275) PDF(12)
Abstract:
5G Network has greatly promoted the promotion of current mobile communication technology. The application of 5 G in daily work and life plays an important role in promoting the construction of intelligent city in China. However, in the construction of mobile communication base station, there are many artificial obstruction factors. This paper mainly introduces the adjacent avoidance and adjacent avoidance effects of mobile communication base stations, discusses the characteristics of the current adjacent avoidance effects in detail, puts forward five important measures, and regards deliberative democracy as the solution to the current contradictions and conflicts.
Standard Research of Information and Communication Technology in Smart City
TIAN Wang-wang
2021, 39(1): 28-30. doi: 10.19695/j.cnki.cn12-1369.2021.01.09
Abstract(208) PDF(21)
Abstract:
A smart city is an information city based on information and communication technology. In the construction of a smart city, information and communication technology standard system must be established, and technical standards should be applied to various fields to promote the full development of smart city standardization. This article introduces the technical system architecture of smart cities, analyzes the standard system construction of ICT in smart cities, and proposes specific application scenarios of ICT in smart cities, hoping to help advance the scientific development of smart cities.
Design of Test System Based on Remote Communication with Spectrum Analyzer
LI Ji-xiu, TIAN Yi, MENG Zhen, ZHANG Xing-cheng, ZHONG Yan-qing, LIU Mou
2021, 39(1): 31-33. doi: 10.19695/j.cnki.cn12-1369.2021.01.10
Abstract(49) PDF(15)
Abstract:
In this paper,it designs and implements a test system of analog signal based on remote communication with a spectrum analyzer. On the one hand, the test system controls the embedded equipment to generate the required analog signal which is then transmitted to the spectrum analyzer through the host computer. On the other hand, through the friendly interface designed by VC software, it can flexibly control the communication with the spectrum analyzer, obtain the data of the spectrum instrument for storage and analysis so as to quantitatively evaluate and test the input analog signal. The test results show that the test system can set the parameters of spectrum analyzer through remote communication, from which it acquires and analyzes the data so as to quantitatively analyze and test the input analog signal.
Research on Methods of Avoiding Interference in 1.8GHz Industrial Application Frequency Band
FAN Cheng-jun, YANG Qian, ZHOU Yun, LI Yan-chun
2021, 39(1): 34-36. doi: 10.19695/j.cnki.cn12-1369.2021.01.11
Abstract(139) PDF(4)
Abstract:
With the rapid development of my country's social economy, various industries have increasingly demanded bandwidth for wireless access systems, and the scarcity of frequency resources has become increasingly serious, which has brought great pressure on the supply of radio spectrum resources. According to the "Notice of the Ministry of Industry and Information Technology on Re-issuing the Frequency Use of the 1785-1805MHz Band Wireless Access System" (No. [2015] No. 65 of the Ministry of Industry and Information Technology), the 20MHz band is planned for wireless access systems, and each provincial radio The management agency can perform frequency assignment and management according to the characteristics of each province's own industry. In the actual management process, the frequency-using units often apply for broadband according to the maximum demand, which cannot effectively restrict the frequency-occupied units economically, which causes a great waste of radio spectrum resources. Therefore, radio frequency management agencies need to conduct in-depth research and accurate calculations based on the business model of frequency occupants and the technical principles of wireless access systems, so as to meet the business needs of various applicants while increasing the utilization of frequency resources, and to conduct frequency audits at the technical level. To promote the development of related technologies and industries, and avoid harmful interference factors with existing systems in the use of frequencies and stations.
Research on Alarm Correlation Based on Dynamic Time Window and Alarm Level Weight
LIAO Qian-qian
2021, 39(1): 37-40. doi: 10.19695/j.cnki.cn12-1369.2021.01.12
Abstract(146) PDF(9)
Abstract:
Aiming at the problem of large amount of alarms in mobile communication network and the uncertain correlation between alarms, this paper proposes an association rule algorithm based on FP growth algorithm, which uses dynamic time window to extract alarm transactions according to the start and end time of alarms, and adds weights to alarm transactions according to alarm levels, so as to improve the maintenance efficiency. The experimental results show that compared with the traditional methods, this method has a certain improvement in the execution time and the rule extraction effect.
Application Research
The Research about Optimization Method of Engine Data Remote Transmission Speed Based on IOT
ZHANG Yan-liang, LIU Yang, ZHANG Guo-liang, LI Kang, PAN Yong-kang
2021, 39(1): 41-43. doi: 10.19695/j.cnki.cn12-1369.2021.01.13
Abstract(155) PDF(9)
Abstract:
This paper takes the remote data acquisition as the research object, analyzes the basic structure and functional principle of the data acquisition system, introduces each link of the data acquisition in detail, analyzes and compares the factors that affect the size of the remote data transmission, and forecasts the speed improvement range after the implementation of the improvement measures.
Analysis and Thinking on the Application of Electronic Medical Record Data
ZHANG Di
2021, 39(1): 44-46. doi: 10.19695/j.cnki.cn12-1369.2021.01.14
Abstract(378) PDF(34)
Abstract:
With the development of computer technology, the electronic medical record system is becoming more and more perfect, which has a far-reaching influence on the construction of hospital information system. In the construction process of electronic medical record system, rapid and accurate collection of medical record information has been realized gradually, but the application of electronic medical record data is still in the initial stage. Based on electronic medical records, the status quo of the application data quality of data entry, structural elements, statistical technology is analyzed, and according to current situation of electronic medical records, medical record data application countermeasures, combining the information technology development, the future use of artificial intelligence, cloud computing, big data, such as technology, visions and electronic medical records electronic medical record system application data content and thinking.
Research on Problems and Countermeasures of Blockchain Big Data Audit Application ——Taking the Exploration of the Establishment of an Alliance Chain in Guangdong Province as an Example
ZHAN Hong-feng, HUANG Lu
2021, 39(1): 47-50. doi: 10.19695/j.cnki.cn12-1369.2021.01.15
Abstract(386) PDF(25)
Abstract:
With the rapid development of blockchain technology and audit information technology, the integration of the concepts of blockchain and big data audit will greatly enhance the data function and information economic function of audit. Through the exploration of the application of blockchain technology in big data auditing, and aiming at the shortcomings of audit information construction at home and abroad, based on the existing data centers built in our province, the author puts forward the audit data based on unchained audit data and blockchain audit data. The design concept of the integration of different data processing procedures. Based on the SWOT analysis of the application direction of the blockchain, it proposes the way to form the alliance chain through the consensus mechanism and the agreed rules of the smart contract, and designs the application model for comparison and selection, and proposes countermeasures and paths for practice, technology integration, and talent training. Innovative ideas and research results provide cutting-edge exploration and new thinking for the development of a unified audit information platform, data sharing mechanism and big data application in the future.
Optimization of Activation Devicein Certain Equipment Based on Armature Configuration
YANG Yi-jun, JIANG Sheng-peng, GAO Zi-long, LIU Gong-long
2021, 39(1): 51-54. doi: 10.19695/j.cnki.cn12-1369.2021.01.16
Abstract(127) PDF(3)
Abstract:
In order to increase the output induced electromotive force of a certain equipment activation device, three armature configuration improvements are proposed based on the structure and principle of the activation device. To reduce the armature toggle time, the optimal scheme was selected and the feasibility of the scheme was verified through Ansys Maxwell simulation.
The Application of Artificial Intelligence in Contemporary Computer Information Technology
YANG Jia-e
2021, 39(1): 55-57. doi: 10.19695/j.cnki.cn12-1369.2021.01.17
Abstract(371) PDF(27)
Abstract:
The widespread application of artificial intelligence technology in contemporary computers has effectively improved my country's computer technology, and the future development trend is good. Through the introduction of the research content and technology of artificial intelligence, the research on the current situation, development process and practical application effects of artificial intelligence technology is aimed at laying a solid foundation for the further development of artificial intelligence technology.
Database Upgrade and Migration from SQL Server 7.0 to SQL Server 2008 R2 Operation Practice
WANG Juan, SHEN Li-juan, WANG Hui
2021, 39(1): 58-60. doi: 10.19695/j.cnki.cn12-1369.2021.01.18
Abstract(181) PDF(14)
Abstract:
SQL Server7.0 is an early version of SQL Server. It has a large version span between the current popular SQL Server 2008 R2 and other high versions. It is a difficult problem to realize the migration of the database from a low version to a high version. This article introduces an example detailed steps for upgrading and migrating the database from SQL Server 7.0 to SQL Server 2008 R2.
The Practice and Exploration of Expressway Information Management
SHI Hao
2021, 39(1): 61-63. doi: 10.19695/j.cnki.cn12-1369.2021.01.19
Abstract(140) PDF(12)
Abstract:
This article briefly elaborates and introduces the content of highway information management system; for highway information technology commonly used, from GPS positioning technology, highway database and GIS technology, digital map and CAD technology, logistics technology, four aspects research summary; and for expressway information management methods, from the four aspects of toll system and centralized payment, internal control management, basic information guarantee, and mobile communication technology application, these four aspects are explored and analyzed, so as to be the practice of expressway information management And explore, provide reference suggestions.
Handwritten Character Recognition Based on BP Neural Network
LU Wen-ling
2021, 39(1): 64-66. doi: 10.19695/j.cnki.cn12-1369.2021.01.20
Abstract(426) PDF(45)
Abstract:
The article compares twoneural network models trained using TensorFlow on MNIST datasets, and optimizes parameters such as the number of neurons, activation function, learning rate, and optimizer. The results show that the simple neural network model can achieve high performance on handwriting recognition under sufficient training data sets, and the additional technical optimization greatly enhances the generalization ability and robustness of the model.
The Innovative Application of Big Data and Informatization in Urban Management
LU Ya-ke
2021, 39(1): 67-69. doi: 10.19695/j.cnki.cn12-1369.2021.01.21
Abstract(155) PDF(10)
Abstract:
A very important characteristic of urbanization development in our country is in hand with the development of urbanization and industrialization, informationization, industrialization process of advancing to a certain extent provided the impetus for urban development, and promote the accelerating urbanization process, and the rapid development of information technology and application, is advantageous to the promotion of city management benefit in China and the healthy development of urbanization, the urbanization development in our country currently in rapid development stage, in the process of rapid urbanization, also has brought the urban social integration, employment, entrepreneurship, health care, education and resources and environment problems, to guarantee the sustainable development of the urban health must pay attention to improve the management level, the emphasis on big data, the application of information technology in urban management, promote the scientific development of the urban management, the author according to their own relevant experience and combined with a wide range of social practice investigation and study, on the data and information technology in the management of city on the related discussion innovative applications, hoping to provide reference.
Cigarette Authenticity Identification Status Tracking Mobile Terminal System
LIU Yan-ting, YU Hang, LI Ning
2021, 39(1): 70-72. doi: 10.19695/j.cnki.cn12-1369.2021.01.22
Abstract(154) PDF(5)
Abstract:
In order to meet the current social development and meet the needs of many aspects, cigarette manufacturers have invested a lot of energy in product process design and new materials. At the same time, counterfeiters are also continuing to follow up and imitate. Use the similarity in appearance to confuse the public, especially some key brand cigarettes that are imitated with more advanced manufacturing equipment, which are very similar in appearance to genuine cigarettes, and can even achieve the goal of being fake. For quality inspectors, there are multiple links in the inspection work, and some links are repetitive and inefficient and need to be optimized. This article is to solve the work needs of the monopoly staff and the quality inspection staff, and optimize the efficiency through technical methods.
Application of Electronic Chart Information System in Ship Navigation
LI De-jiang
2021, 39(1): 73-75. doi: 10.19695/j.cnki.cn12-1369.2021.01.23
Abstract(172) PDF(12)
Abstract:
Electronic chart information system in the navigation of ships, mainly to provide a stable and safe route to ensure the safety and stability of ship navigation. But during the voyage of the ship, affected by adverse factors at sea, its safety and stability will decline, serious cases will lead to navigation accidents. This paper discusses the electronic chart information system, analyzed the specific application of electronic chart information system in ship navigation, researched the application benefits and development trend of electronic chart information system, hope to provide some reference for the safe and stable navigation of ships.
Artificial Intelligence and Edge Computing for Intelligent Transportation Development
FAN Sheng-jiao
2021, 39(1): 76-78. doi: 10.19695/j.cnki.cn12-1369.2021.01.24
Abstract(290) PDF(16)
Abstract:
Traffic is very important to urban development. The safety of driving, the smoothness of traffic and the efficiency of logistics transportation are the major traffic problems that need to be improved urgently at present. The development and application of advanced computer technology represented by artificial intelligence push the field of transportation to intelligence. The improvement of artificial intelligence-related technologies will also improve the function of intelligent transportation. In the traffic environment with large population and vehicles, the artificial intelligence system based on edge computing will greatly improve the classification, processing and discrimination ability of traffic data.The improvement of artificial intelligence-related technologies will also improve the function of intelligent transportation. In the traffic environment with large population and vehicles, the artificial intelligence system based on edge computing will greatly improve the classification, processing and discrimination ability of traffic data.
Research on Intelligent Question Answering Technology Combining Subject Features
DU Zhong-fang, HOU Yue, LU Hao-dong
2021, 39(1): 79-80. doi: 10.19695/j.cnki.cn12-1369.2021.01.25
Abstract(234) PDF(11)
Abstract:
We study intelligent question answer based on deep learning techniques with topic features. We introduce a LDA model, the vocabulary generation process in the LDA model, and the method about combining the deep learning model and topic features.
Application of System Simulation Technology in Wind Tunnel Control System
SHAN Yong-zheng
2021, 39(1): 81-83. doi: 10.19695/j.cnki.cn12-1369.2021.01.26
Abstract(219) PDF(9)
Abstract:
For wind tunnel control systems, strengthening the application of system simulation technology can effectively test the wind tunnel control system, which is of great significance for improving the construction efficiency of the wind tunnel control system and reducing the risk of system construction. Therefore, the article discusses related content, while understanding the system simulation technology, discusses and describes its specific application in the wind tunnel control system.
Research on Process Automation (RPA) Technology from the Perspective of Artificial Intelligence in Financial Field
CHEN Yi-bin
2021, 39(1): 84-86. doi: 10.19695/j.cnki.cn12-1369.2021.01.27
Abstract(131) PDF(3)
Abstract:
This paper introduces the technical form of the primary stage of artificial intelligence process automation (RPA), this paper discusses the advantages and limitations of RPA technology in financial management, combined with practical cases, the specific application scenarios and effects of RPA are analyzed, it provides reference for the application of RPA technology in the financial field.
The Effective Application of Office Intelligence under the Background of "Internet +"
CHENG Zhi-peng, HAN Jian-feng
2021, 39(1): 87-88,93. doi: 10.19695/j.cnki.cn12-1369.2021.01.28
Abstract(198) PDF(13)
Abstract:
Today, with the rapid development of Internet technology and artificial intelligence, the ability and computing power of data processing have reached a very high level.Traditional Excel spreadsheet editing software for data processing has the characteristics of simple operation and fast handling, but its statistical data speed is relatively slow.Through the simple comparison of data statistics based on Python and data statistics based on Excel, this paper finds that Python's data processing capacity and speed are far superior to Excel, which can make our office more intelligent.
Application and Prospect of Visualized Management in Construction Process of Transmission Line Engineering
ZENG Yao-qiang, LIU Hua, LUO Jin
2021, 39(1): 89-93. doi: 10.19695/j.cnki.cn12-1369.2021.01.29
Abstract(189) PDF(6)
Abstract:
The construction of transmission line projects often has the characteristics of large construction scale, multiple units involved, and complicated construction procedures. The existing construction process management mode of power grid transmission line engineering is mostly manual control and periodic reporting layer by layer, especially for the difficulty of refinement of progress rate and lack of informational management methods. Combined with the construction process of the Wudongde supporting delivery project (Guangzhou section), this paper introduces the refinement of construction schedule and visual control technology of construction process. By improving the ability to obtain progress information on the construction site, the paper suggests establishing the entire construction schedule management application from schedule data collection, reporting, and visualization management to provide a practical basis for the refined management of the subsequent construction process of similar projects.
Research on Refinement of Process Net
GUO Feng
2021, 39(1): 94-97,228. doi: 10.19695/j.cnki.cn12-1369.2021.01.30
Abstract(124) PDF(3)
Abstract:
Process net is a kind of net structure defined by Petri net and process algebra, which is used to model concurrent asynchronous system. The refinement of process network is a modeling process of replacing simple high-level structure with complex structure to support top-down refinement step by step. Five refinement rules of process network are defined: subnet refinement, synchronous refinement, selection refinement, cycle refinement and communication refinement. A tool supporting process network modeling and refinement is implemented. The detailed operation of process network can reflect the hierarchical relationship of the model, which is helpful to the analysis of system model.
Algorithm Analysis
Histopathological Image Segmentation Based on Probabilistic Graphical Model
ZHANG Yi, PANG Bao-chuan
2021, 39(1): 98-101. doi: 10.19695/j.cnki.cn12-1369.2021.01.31
Abstract(148) PDF(19)
Abstract:
The purpose of this paper is to design a method of pathological image segmentation, which can solve the problem of recognition and segmentation of conglutinated and partially overlapped objects on the background of complex texture in pathological image.In this paper a mixed probabilistic graphical model was constructed which is suitable for pathological image segmentation. By using undirected graph and directed graph, this paper built statistical models of the probability dependence of nuclear position, contour on region and edge information, and also researched the parameter estimation method in the graphical model, designed and implemented the pathological image segmentation algorithm based on the probabilistic graphical model. The experiment shows this method improves the accuracy of recognition of nuclei in pathological images.
Overview of Data Classification Algorithms for Big Data Mining
YIN Ting-jun, LI Ling-hui, ZHOU Rui
2021, 39(1): 102-104. doi: 10.19695/j.cnki.cn12-1369.2021.01.32
Abstract(638) PDF(87)
Abstract:
With the rapid development of information technology, various kinds of data information surge,as an important means of collecting, storing and managing massive data to analyze and predict the habits and characteristics of a certain group of people and even the development trend of a certain industry, big data technology provides a comprehensive strategic basis for management decision makers that traditional processing mode cannot match. Among them, data mining technology plays a vital role.Based on the author's actual work experience, this paper briefly analyzes the data classification algorithm technology in the stage of big data mining, hoping to bring some help to relevant personnel.
Random Noise Compensation Method for MEMS Accelerometer Based on EMD Decomposition
TIAN Yi, LI Ji-xiu, ZHONG Yan-qing, YAN Yue-peng, MENG Zhen, ZHANG Xing-cheng
2021, 39(1): 105-107. doi: 10.19695/j.cnki.cn12-1369.2021.01.33
Abstract(103) PDF(8)
Abstract:
In order to improve the measurement accuracy of MEMS accelerometers, a stochastic error compensation method based on empirical mode decomposition (EMD) is adopted. In this paper the accelerometer signal is decomposed into intrinsic mode function (IMFs) and a residual component by EMD algorithm, and IMF is divided into three categories: noise dominant component, signal/noise mixed component and signal dominant component; noise reduction of signal/noise mixed component is realized by threshold processing, the signal/noise mixed component after noise reduction and the dominant component of the signal are reconstructed to obtain the accelerometer signal after noise reduction. It is proved that the algorithm can effectively improve the measuring accuracy of the accelerometer through the verification of dynamic data and static data acquisition.
Improved Traffic Sign Recognition Algorithm Based on YOLOv3 Algorithm
XU Ying-chun
2021, 39(1): 108-111,116. doi: 10.19695/j.cnki.cn12-1369.2021.01.34
Abstract(299) PDF(37)
Abstract:
Target detection is a hot research direction in the field of computer vision, and traffic sign recognition has an important application in automatic driving. However, the detection accuracy of small targets in complex scenes is not high. To solve this problem, an improved algorithm based on YOLOv3 is proposed. By modifying the appropriate anchor size, Image Mixup is used to enlarge the image and increase the number of positive samples in the prediction box; Resnet50-d is used to enhance the ability of feature extraction; three scale feature maps are output from the network structure, and the feature maps are fused across scales by upsampling. The improved algorithm is compared with the source algorithm on the dataset. The results show that the improved algorithm can effectively improve the accuracy of target detection.
A Survey of Current Research on Image Target Detection Algorithms Based on Deep Convolutional Neural Networks
MENG Xiang-ze
2021, 39(1): 112-116. doi: 10.19695/j.cnki.cn12-1369.2021.01.35
Abstract(65) PDF(12)
Abstract:
As an important research achievement in the computer field, deep convolutional neural networks have been widely used in image classification problems. With the improvement of the accuracy of image classification, image target detection algorithms based on convolutional neural networks have gradually become a current research hotspot. This article first reviews the network models that are of great significance to the development of convolutional neural networks and the recent years of candidate frame extraction, regression, and anchor-free object detection algorithms based on convolutional neural networks. Finally, combined with the problems of convolutional neural networks and target detection algorithms, prospects for future research directions are made.
Semantic Segmentation Based on Dividing Different Difficulty Class Levels
LUO Zi-ming, FENG Kai-ping, LUO Li-hong
2021, 39(1): 117-120. doi: 10.19695/j.cnki.cn12-1369.2021.01.36
Abstract(120) PDF(9)
Abstract:
The task of semantic segmentation is to classify each pixel of a given picture, in order to solve the problem that the accuracy of semantic segmentation will drop sharply when the number of classes increases sharply or the characteristics of classes change frequently. This research proposes to divide the pixel classification task into different subtasks according to the classification difficulty. The specific work is divided into two parts: training a neural network for each subtask and training an integrated neural network. Divide the number of difficulty levels according to the number of image pixels. By training the neural network for each different difficulty level, the probability map of each subtask can be obtained, and then the integrated network can be trained through these probability maps. In the experimental part, this research divides the 11 categories on the data set into three categories: easy, medium, and difficult for training. The average IoU is used on the CamVid data set to measure the accuracy of semantic segmentation of this method. The experimental results show that this research method has a 2% improvement in the average IoU of various types compared with the single U-net compared with the traditional method. Especially in the three categories of fences, sidewalks, and cyclists, there is an increase of more than 5%.
Application of an Improved Non Maximum Suppression Algorithm in YOLOv3 Model
CHEN Peng-cheng, QI Bao-ren, KONG De-yu
2021, 39(1): 121-123. doi: 10.19695/j.cnki.cn12-1369.2021.01.37
Abstract(205) PDF(11)
Abstract:
Most of the YOLOv3 target detection models use non maximum suppression algorithm when determining the candidate region. This kind of algorithm may have the problem of repeated detection in multi-target detection task. Aiming at this problem, this paper optimizes the soft NMS algorithm studied by predecessors and proposes I-NMS algorithm. The algorithm is applied to YOLOv3 algorithm for modeling, and the experimental results show that the algorithm is effective I-NMS algorithm is helpful to solve the problem of duplicate detection in yolov3 algorithm.
Methods of Constructing Set Member Table to Prove Set Identity
DUAN Jing-hui
2021, 39(1): 124-126. doi: 10.19695/j.cnki.cn12-1369.2021.01.38
Abstract(146) PDF(2)
Abstract:
Based on the idea of the law of excluded middle in propositional calculus, combined with the truth table method of propositional formula, the construction method of set member table is proposed, and the method is used to prove the set identity.
Design and Development
Design and Simulation of 8～18GHz Double-ridged Horn Antenna
ZHOU Yuan, QU Le-le, DU Xin-yue, ZHANG Xu
2021, 39(1): 127-129. doi: 10.19695/j.cnki.cn12-1369.2021.01.39
Abstract(291) PDF(27)
Abstract:
The horn antenna is an antenna with a relatively simple structure. Its bandwidth can be very wide, and has good fidelity in the time domain. When the operating frequency is greater than 15GHz, the backlobe begins to split and the sidelobe power increases. The addition of a ridge structure into the horn cavity can increase the bandwidth, reduce the impedance, increase the gain and enhance the directivity of the radiation.This paper designs a double-ridged horn antenna that works in a bandwidth of 8~18GHz. The HFSS simulation verified that the antenna has good electrical and radiation performance.
Construction Practice of Cultural Heritage Protection Platform in Information Interconnection Environment
ZHANG Qing
2021, 39(1): 130-132. doi: 10.19695/j.cnki.cn12-1369.2021.01.40
Abstract(36) PDF(4)
Abstract:
Cultural Relics are the historical accumulation of Chinese culture and play an important role in cultural inheritance. At the present stage, our country and even the world are all under the environment of Information Interconnection, this big background also puts forward the new request to the cultural relic protection, the cultural relic protection can no longer limit to the traditional protection strategy, but should resort to the modernized means, through the construction of Cultural Relics Protection Platform, we will explore new strategies for the protection of cultural relics, actively promote the modernization and digitization of cultural relics protection, use cultural relics protection to inherit Chinese culture, and raise the level of cultural relics protection. Based on this, this paper focuses on the construction of cultural relics protection platform in the environment of information interconnection, effectively changing the traditional way of cultural relics protection.
Design and Implementation of Subway Video Monitoring System Based on Cloud
ZHANG Hui, XIE Guo-qing
2021, 39(1): 133-136. doi: 10.19695/j.cnki.cn12-1369.2021.01.41
Abstract(174) PDF(10)
Abstract:
Special video monitoring for metros is the most intuitive means to guarantee the safe operation of metros. Along with the increasingly high requirements on monitoring in recent years, the cloud orientation of video services, computing, and storage has become hot spots in the research of security industry. In combination with the actual requirements on metro monitoring, and from the aspects of overall architecture, video data flow, and cloud storage of videos, etc., this paper introduces the integration of video monitoring and cloud platform, constructs a set of high-performance, high-security, high-concurrency, easy-maintenance, easydeployment video monitoring systems, makes exploration for the digitalized, cloud-oriented and intelligent management on metro operation, and provides a reference for the development direction of new-generation video monitoring system.
Data Acquisition System of Power Grid 3D Information Based on UAV Lidar Aerial Remote Sensing
ZENG Shi-lun, WANG Xiao-fan, CHEN Liang, ZHU Li-peng, LI Jian-bing
2021, 39(1): 137-139. doi: 10.19695/j.cnki.cn12-1369.2021.01.42
Abstract(230) PDF(7)
Abstract:
With the development of UAV, the integration of three-dimensional data acquisition and the development of UAV in time and space has been broken through. Based on this, this paper studies the power grid 3D information data acquisition system based on UAV lidar aerial remote sensing.
Design and Implementation of Generation System of Text Adversarial Samples
XU Hui-xuan, WEI Xuan, ZHANG Ya-ting, ZHANG Xue-er, WANG Yi-ting
2021, 39(1): 140-142. doi: 10.19695/j.cnki.cn12-1369.2021.01.43
Abstract(74) PDF(7)
Abstract:
We design and implement a generation system of text adversarial samples to detect illegal text. The system has ability of random insertion, position exchange, deletion and synonym replacement for text to control text’s emotional attributes. Based on IMDB dataset, the experiment shows that the system is valid and can provide the knowledge support for the detection of text adversarial samples.
Research on the Construction of Wechat Embedded Subject Service Platform Based on Information Behavior
XU Ao-xue
2021, 39(1): 143-145. doi: 10.19695/j.cnki.cn12-1369.2021.01.44
Abstract(98) PDF(1)
Abstract:
With the continuous development of society and the improvement of economy, our society tends to be network and information,The subject service platform needs to innovate in the service mode, deepen the service content, and break through the limitations of resources and access channels.The construction of wechat embedded subject service platform can improve the above problems. It can accurately push relevant information for users according to users' habits and information behavior. At the same time, it can improve user stickiness and strengthen interaction with users.Based on this, this paper will discuss the information behavior oriented wechat embedded subject service platform construction research.
A Modest Proposal for Special Effect Technology in Computer Animation Design and Production
WANG Yun-jiang
2021, 39(1): 146-148. doi: 10.19695/j.cnki.cn12-1369.2021.01.45
Abstract(200) PDF(7)
Abstract:
With the continuous economic development in recent years, my country’s animation industry has a good development prospect and has achieved good results. The audience’s requirements for animation design special effects have also risen to a new level. We see in animation design special animation effects such as ink staining and three-dimensional animation.Based on this, this article conducts a detailed study on the special effects technology in computer animation design and production to fully understand the technical meaning and expressiveness in order to better complete the task.
Library Intelligent Borrowing and Returning Robot
LIU Yi-qi, MO Qi, ZHANG Jian, LI Ying-duo, CHEN Ze-lin
2021, 39(1): 149-150. doi: 10.19695/j.cnki.cn12-1369.2021.01.46
Abstract(365) PDF(28)
Abstract:
Due to the huge amount of books in the library, the management work of the staff is heavy, and it is difficult for the borrower to find books. In view of this phenomenon, our team has developed a library intelligent book borrowing and returning robot, which can not only guide and help borrowers to find books, but also assist library staff to improve work efficiency.
The Design of Intelligent Escape Clothes Hager Device
LIU Qi-xiang, GUO Ya-qin, AO Xiang, FENG Yao-hui, JI Gu-fei
2021, 39(1): 151-152,156. doi: 10.19695/j.cnki.cn12-1369.2021.01.47
Abstract(224) PDF(9)
Abstract:
With the rapid development of economy, people's living requirements are higher and higher, intelligent buildings have become more popular, the design of building circuit is more complex, and the fire problems caused by worn circuit are also increasing. In the fire, the problem of personnel escape is particularly important. In this paper, the common clothes hanger is refitted to the intelligent escape clothes hanger device. In case of the fire, the device has the function of alarm and communication with fire department. Meanwhile, the clothes hanger works in the escape ladder mode. The device has simple structure, solves the problem of personnel escape, and has high practical application value.
Research on Simulation Method of Aircraft Instrument
WANG Shu-yun, LIU Jian-chao, YUE Fu-chang
2021, 39(1): 153-156. doi: 10.19695/j.cnki.cn12-1369.2021.01.48
Abstract(89) PDF(8)
Abstract:
The design project of the simulation instrument system for a certain aircraft was described. The article introduced a drawing method of virtual instrument which is based on OpenGL and developed with Visual C++ 6.0. The practical applications indicate that the virtual instrument is vivid, the code has good reusability, high efficiency and strong expandability. It has good performance in generality and modularity.
Buiding Mulit-level Recurrent Neural Network Structure to Analyse Financial Indice Data
LIU Chao-yun, XIE Wei
2021, 39(1): 157-159. doi: 10.19695/j.cnki.cn12-1369.2021.01.49
Abstract(109) PDF(4)
Abstract:
We propose a kind of recurrent neural network structure for analysis stock indicators and its composed indicator sets which are used for predicting stock trend. Traditional method to analysis stock trend is using kinds of indicators algorithm, but estimation of effective indicators need long period testing time to evaluate. We compose a multiple rnn cell layers neural network to receive stock data, and output prediction result data basing on sets of indicators’ data which are put through into the network as well. With comparing prediction result and real data, it is helpful to choose composition of stock indicators for investment decision strategy and saving time.
Design and Application of Intelligent Chinese Medicine Cabinet System Based on Artificial Intelligence
LIANG Bi-ying, MO Qi, CAI Jia-huan
2021, 39(1): 160-161. doi: 10.19695/j.cnki.cn12-1369.2021.01.50
Abstract(128) PDF(12)
Abstract:
In the context of the intelligent era, map applications have become an indispensable tool for people to travel. According to the survey, there are problems in the current route planning application on the market with a single function, which cannot realize multi-site route planning. In response to this phenomenon, this project develops a multi-site route planning application based on the Android system, which can realize accurate recommendation and multi-site planning. Develop a unique play route for users and enable users to travel intelligently.
A General Technical Framework for Searching Graphs from Massive Data
JIANG Guang-jie
2021, 39(1): 162-165. doi: 10.19695/j.cnki.cn12-1369.2021.01.51
Abstract(178) PDF(4)
Abstract:
With the continuous deepening of the application of video AI intelligent analysis technology in the field of public security, the surveillance camera acquisition equipment in each urban area has incorporated massive video image data, forming effective structured information and vector feature information. The vector feature information is mainly used to search the case suspects with the precise image. This paper presents a solution to support the rapid retrieval of mass images.
Explore the Application of Intelligent Indoor Formaldehyde Detection System in Real Life
FENG Shuai, JU Chuang, LI Ying, LIU Lin
2021, 39(1): 166-168. doi: 10.19695/j.cnki.cn12-1369.2021.01.52
Abstract(142) PDF(4)
Abstract:
With the progress of the times and the improvement of economic level, people pay more and more attention to the quality and effect of interior decoration, and various materials used in interior decoration begin to increase, but the following formaldehyde problems are slowly exposed to people's vision, which makes the public pay more and more attention to the formaldehyde treatment of indoor living environment. This paper explores the existing formaldehyde detection methods. And put forward a set of intelligent formaldehyde detection data, hoping to develop a set of indoor formaldehyde detection equipment based on deep learning algorithm, and get the actual data of formaldehyde in the household space by detecting and observing people's daily living space, thus playing a certain role in assisting the treatment of formaldehyde, and playing a certain reference role for future research in related directions.
Application of Cloud Computing Based on PaaS Platform in Seismic Business System
FANG Wei-hua, ZHOU Lan-jie, LI Wen-hui
2021, 39(1): 169-171. doi: 10.19695/j.cnki.cn12-1369.2021.01.53
Abstract(179) PDF(4)
Abstract:
The current business methods of our center mainly include mobile seismic monitoring, seismic observation, seismic detection, etc. With the continuous increase of seismic business, seismic scientist and technicians often face the construction of various seismic business systems. In this process, the following problems are often encountered: low efficiency in building business systems, high thresholds for building business software, difficulty in migrating business systems, and difficulty to separate seismic business personnel from operation and maintenance personnel. In this paper, we introduce the cloud computing based on PaaS platform, and adopt the Docker architecture platform. According to the characteristics of earthquake-related business, we demonstrate the business software customization process, and builds our own cloud computing PaaS service platform for the earthquake business system. Such system may enhance the performance, and provide constructive opinions and expand model research abilities for the seismic data center. Using this method can better optimize the production environment and service mode of the seismic data center, and improve the work efficiency of seismic scientists.
Research and Implementation of Precise Fusion Technology between Oblique Photographic Image and Real 3D Model
WANG Chang
2021, 39(1): 172-176,179. doi: 10.19695/j.cnki.cn12-1369.2021.01.54
Abstract(147) PDF(6)
Abstract:
In general, there is hollowness, uneven surface and suspended solids in real 3D model. Real 3D model is fuzzy in large scale. Precise fusion technology between oblique photographic image and real 3D model is designed. By the technology, the geometric correspondence relationship is established between the image and real 3D model in the computer window coordinate system. The image is accurately overlaid on real 3D model in large scale. In the 3D scene, the image and real 3D model can switch seamlessly. This technology is applied in the Jingzhou 3D planning decision support system, which provides a good realistic display effect for the planning.
An Implementation of Pseudo Corpus Generation for Chinese Spelling Checking
HU Rui
2021, 39(1): 177-179. doi: 10.19695/j.cnki.cn12-1369.2021.01.55
Abstract(82) PDF(3)
Abstract:
Most of Chinese spelling check tasks are implemented as sequence tagging tasks. However, those implementations are limited by the size and source of corpus they used. By now, most of Chinese spelling check corpus are extracted from a condition called CFL (Chinese as Foreign Language), which the errors are made by Chinese language learners when they are writing in an exam. Corpus constructed by this method are often limited by cost, which further limited their size. Those limitations make them hardly be used in spelling check task for publish industry. This paper composes a method to generate large amount of pseudo corpus from Wikipedia.
Security Technology
Analysis on the Importance of Network Security Management in Enterprise LAN Operation and Maintenance Management
ZHANG Xiang-wei
2021, 39(1): 180-182. doi: 10.19695/j.cnki.cn12-1369.2021.01.56
Abstract(294) PDF(17)
Abstract:
In the rapidly changing society, there are more and more information related exchanges. It can be said that, whether in our daily life or in the confidential exchange of enterprises, there is a close relationship between network security and information. Especially with the comprehensive construction of information technology, information operation management has become one of the hot topics in the current enterprise development. It can be said that enterprise LAN operation plays an important role in the security management of enterprise internal information. In this regard, the article shows a simple overview of the local area network, on this basis, the existing problems of enterprise LAN operation and maintenance management, and how to ensure the enterprise network security management are studied and analyzed.
Application of Data Encryption Technology in Computer Network Security
YE Yong-ping
2021, 39(1): 183-185. doi: 10.19695/j.cnki.cn12-1369.2021.01.57
Abstract(226) PDF(15)
Abstract:
With the continuous development of information technology, the current network has become popularized, but while people obtain massive amounts of data with the help of computer networks, they are also vulnerable to information theft or even destruction. Due to the widespread use of the Internet, the number of information leakage and information destruction incidents has increased, and people’s privacy has been destroyed. For this, more and more people realize the importance of network security. The security issues of computer networks have begun to be taken seriously. This article will start with the main problems faced by computer network security, focusing on the analysis of the application of data encryption technology in computer network security.
Analysis of TCP/IP Protocol Execution Strategy Combined with Network Layer Data Link Attack Behavior
YANG Ying
2021, 39(1): 186-188. doi: 10.19695/j.cnki.cn12-1369.2021.01.58
Abstract(162) PDF(5)
Abstract:
In order to solve the problem that the traditional implementation strategy of TCP / IP protocol is easy to cause large amount of data leakage when dealing with the network layer data link attack behavior, which can not guarantee the privacy and security of users. Based on the analysis of TCP / IP protocol execution and its defects, the random sequence of TCP / IP protocol is negotiated to establish network communication channel. Based on the security policy execution of network layer data link attack behavior, a new execution strategy is proposed. The experimental results show that, compared with the traditional execution strategy, the implementation strategy can effectively reduce the amount of data leakage and ensure the privacy and security of users in the computer network environment.
Research on Network Firewall Strategy Based on Big Data
WANG Wan-long, SUN Shang
2021, 39(1): 189-191. doi: 10.19695/j.cnki.cn12-1369.2021.01.59
Abstract(61) PDF(5)
Abstract:
This article proposes the Change-Based Association Rule Mining (CBARM) method. From historical firewall log records, discover emerging style firewall rules, new style firewall rules, and disappear style firewall rules, so as to dynamically adjust the current firewall rules, this can be more intelligent to complete the protection of network attacks.
Application of Computer Network Security Technology in Network Security Maintenance
QIN Wei-hua
2021, 39(1): 192-194. doi: 10.19695/j.cnki.cn12-1369.2021.01.60
Abstract(111) PDF(6)
Abstract:
Since entering the 21st century, computer information technology began to enter people's lives, and the development of all walks of life more closely. The widespread application of computer network has brought great convenience to people's production and life, but with the passage of time, the disadvantages of computer network also began to appear gradually, especially the network information security problems caused people's attention, on the current network technology point of view, hacker malicious attacks, the impact of viruses, etc. should be under the current social and technical background of computer information security Information technology is an important reason for the development of this paper, based on the actual situation, combined with the research status of the industry, the computer network technology security maintenance aspects of the content of in-depth research and analysis.
Research on Information Network Security Management and Prevention
MAO Yi-wei
2021, 39(1): 195-197. doi: 10.19695/j.cnki.cn12-1369.2021.01.61
Abstract(125) PDF(4)
Abstract:
In the context of the information age, information technology and network technology are widely used in various fields. However, in the process of information construction, it is very vulnerable to various factors, for example: virus invasion, information leakage and other factors, so it causes many network security problems. Based on this, this paper analyzes the current problems of information network security management in China, this paper studies the effective preventive measures of information network security problems, in order to effectively ensure the security and reliability of information.
Academic forum
Research on Improving Innovation Ability of Professional Master in Communication, Navigation and Surveillance
ZHOU Chao, XIONG Ren-he, WANG Yao, XIAO Jun, YE Jia
2021, 39(1): 198-200. doi: 10.19695/j.cnki.cn12-1369.2021.01.62
Abstract(40) PDF(1)
Abstract:
With the expansion of professional master (PM) and the society's demand for high-level talents, the talent training model of universities needs to respond to the development of the new era. In order to meet the requirements of contemporary civil aviation transportation professional personnel training, implement the concept of the Ministry of Education, discuss the improvement of the innovation ability of the civil aviation communication and navigation surveillance (CNS) direction, analyze the current status and existing problems of the training of the CNS direction, and combine the development of civil aviation. The characteristics and the actual situation of the students in the school put forward the innovation ability improvement strategy for the curriculum system, training model, scientific research platform and evaluation system, etc., to provide suggestions for the civil aviation reserve high-level innovative talents.
Intelligent Allocation Method of Control Position for Air Command Based on Air Traffic Controller Workload
ZHANG Yong, WANG Yi-jian, JIN Sha-zhou, YAN Dan-qing
2021, 39(1): 201-203. doi: 10.19695/j.cnki.cn12-1369.2021.01.63
Abstract(110) PDF(6)
Abstract:
The high-quality development of civil aviation needs supporting infrastructure and equipment, skilled talent team, optimal allocation of airspace resources, etc., as well as fine management of civil aviation resources, which has reached the optimal use of available resources. In the aspect of fine management of air traffic control system, it is necessary to carry out fine management of sector / control area, controller and equipment resources of control unit. In order to ensure the safety of control operation, each position of control position of air command should be reasonably allocated to achieve the purpose of optimal allocation of control resources.
Analyzing and Comparing Similarities and Differences between SQL Server and MySQL in Higher Vocational Education
ZHANG Hai-yue, FAN Xi
2021, 39(1): 204-206. doi: 10.19695/j.cnki.cn12-1369.2021.01.64
Abstract(133) PDF(9)
Abstract:
Database is a basic core course for computer science and its related majors and is a general elective course for other majors in higher vocational education. SQL Server and MySQL: two typical relational databases are always applied in teaching database courses. This essay elaborately analyzes and compares the similarities and differences between SQL Server and MySQL in fields of higher vocational education in terms of years of teaching experiences and practices of author. The students who are studying database courses and the instructors who are teaching database curriculum can absorb the benefits from the paper, hopefully.
Convolution Operation and MATLAB Simulation Design in Signal Processing Course
ZHANG Guang-shun, GAI Qi, CAI Feng-tao, YANG Ying-jie
2021, 39(1): 207-209. doi: 10.19695/j.cnki.cn12-1369.2021.01.65
Abstract(248) PDF(26)
Abstract:
Convolution operation is a very important mathematical operation in the course of signal processing. According to the definition of convolution, MATLAB software is used to demonstrate the calculation process. The sound signal is used as an example to demonstrate the result of convolution operation. It helps students better understand the calculation process of convolution, convolution theorem and signal filtering, and stimulate their interest in learning to improve the quality of learning.
Research on Intelligent Marketing Strategy of Agricultural Products Based on Big Data Platform
ZENG Ling-feng
2021, 39(1): 210-212. doi: 10.19695/j.cnki.cn12-1369.2021.01.66
Abstract(745) PDF(22)
Abstract:
With the rapid development of big data technology and the continuous promotion of intelligent agriculture, big data platform will become the main support platform for agricultural product marketing. This paper discusses the current situation of agricultural product marketing in the era of big data, this paper introduces the construction of intelligent marketing mode of agricultural products based on big data, researched the implementation strategy of intelligent marketing of agricultural products under big data agricultural products, it is expected that the big data platform will be applied to the intelligent marketing of agricultural products, improve the marketing module, and innovate the intelligent service model, increase the income of farmers.
Data Organization Strategy for the Protection and Inheritance of National Culture ——Taking the Bai Nationality Disaster Culture Database Construction as an Example
SHI Lei
2021, 39(1): 213-215. doi: 10.19695/j.cnki.cn12-1369.2021.01.67
Abstract(64) PDF(1)
Abstract:
The Bai nationality has a long history and a deep cultural heritage. However, the construction, development and utilization of the Bai nationality disaster culture database cannot meet the needs of explorers, especially the construction of the Bai nationality disaster culture database has just started. Taking the construction of the Bai disaster culture database as an example, the conditions, basic content, difficulties and countermeasures of the Bai disaster culture database construction are explained.
Research on the Application of 3D Printing Development Innovative Teaching Aids in Higher Vocational Education
LI Hong-li, SHEN Shan-shan
2021, 39(1): 216-218. doi: 10.19695/j.cnki.cn12-1369.2021.01.68
Abstract(191) PDF(7)
Abstract:
According to the demand of innovative teaching aids for mechanical courses, such as《Mechanical Drawing》, 《Mechanical Principle》 and 《Mechanical Innovation Design》,DLP 3D printing technology is used to design and develop innovative teaching aids and put them into practical teaching. Innovative combination of DLP 3D printing technology and mechanical professional courses teaching, advanced manufacturing technology and vocational education teaching mode, to achieve diversified physical teaching, to conform the development trend of innovative education and expand the application of advanced manufacturing technology.
Research on the Application of Big Data Technology in Tourism Safety Issues
FANG Dan-hui, SUN Zhong-yang
2021, 39(1): 219-221. doi: 10.19695/j.cnki.cn12-1369.2021.01.69
Abstract(199) PDF(13)
Abstract:
In the context of big data technology, my country's tourism has also been comprehensively developed. However, the issue of tourism safety is the key to the development of the tourism industry. However, there are still some problems in my country's tourism security at this stage, which need to be further improved. Based on relevant data, this article analyzes the current situation of tourism safety in the era of big data and the application analysis under big data, and puts forward the corresponding strategic basis.
Research on the Construction of Patient-centered Smart Hospital System
CHU Jun
2021, 39(1): 222-224. doi: 10.19695/j.cnki.cn12-1369.2021.01.70
Abstract(77) PDF(5)
Abstract:
The establishment of a smart hospital system must pay attention to patient-centeredness, adhere to the main status of patients in medical service activities, insist on creating more high-quality, convenient and reliable medical service conditions for patients, and improve patients' medical treatment status. To build a patient-centered smart hospital system, we must focus on making full use of information technology to help the construction of smart hospitals, so as to realize a smart medical service system under the Internet+ and improve patients' medical experience.
Construction of Knowledge Base Model for Small Scientific Research Institutions Based on Metadata Application
GAO Yuan-xin
2021, 39(1): 225-228. doi: 10.19695/j.cnki.cn12-1369.2021.01.71
Abstract(135) PDF(10)
Abstract:
As the main platform for scientific research institutions to collect and manage achievements, institutional repository has been rapidly established and developed in scientific research institutes in recent years. Beijing Electronic Science and Technology Information Research (hereinafter referred to as "Information Institute") has formed a relatively complete scientific research management system suitable for the units. However, with the passing of years, the completion of projects or the transfer of personnel and other reasons, the historical information materials are scattered, omitted and damaged. In this paper combined with the requirements of electronic and visualization in the scientific research process of the Institute, a small knowledge platform model is established to solve the problems of scientific research project management, research report access and so on.

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