Electronics Science Technology and Application (E-Journal)
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Weld identification technology of pressure steel pipe for wall-climbing robot operation
Full text linkWith the continuous development of hydropower industry in China, the test and maintenance task of hydropower generator
set is increasingly heavy. As a key component of the generator set, the water inlet pressure steel pipe, because of its large diameter and long
distance characteristics, makes the past by manual detection and maintenance of the operation mode has a long period, high labor intensity
and other problems. With the progress of robot technology, mobile robots are considered to solve the above problems instead of manual
work. In the inspection and maintenance of pressure steel pipe, there are many tasks around welding seams. In order to improve the quality
and effi ciency of robot operation, it is necessary to realize high-precision welding seam identifi cation. This paper takes the welding seam
identifi cation of pressure steel pipe as the research content, adopts the semantic segmentation method based on improved DeepLabv3+,
takes the two-track wall-climbing mobile robot as the test platform, and takes the actual pressure steel pipe as the test object to carry out the
algorithm instantiation test and analysis. Field tests show that the pressure steel pipe weld identifi cation technology can identify the weld
effi ciently and accurately, which is helpful to improve the working effi ciency and accuracy of the wall-climbing robot
Intelligent high-altitude power inspection vision module based on KendryteK210 microcontroller
Full text linkNow our country has a huge electric power system, it needs a complex electric power transmission network to support
its normal operation. With the development of unmanned aerial vehicle platform and microprocessor technology in recent years, the
unmanned aerial vehicle inspection platform based on microprocessor is an important development direction of power transmission network
maintenance. Based on this background, this paper designs an intelligent high-altitude line inspection vision module based on KendryteK210
microcontroller. The module can be used as a UAV load to carry out efficient power line patrol work, and wireless communication is
carried out by ESP8285Wi-Fi. First of all, the inspection vision module uses OV2640 visible light camera to complete the target image
data acquisition. Then, in the process of data processing, the least square method and Theil-Sen regression algorithm are combined to get
the target line object, so as to get the slope and length of the line object and other parameters. Finally, the target in the image was identifi ed
based on the yolov2 neural network model, and then the fl ight path instruction was provided for the UAV platform
Research on application of Internet of Things technology in smart home design
Full text linkWith the rapid development of social economy, science and technology to promote people’s quality of life continues to
improve, smart home market came into being, has broad prospects for development. In the fi eld of smart home, the application of Internet
of Things technology can break the traditional home management mode, enrich people’s home life experience, and make the living
environment more comfortable. Based on this, this paper will focus on the application of Internet of Things technology in smart home design
research
Analysis of electrical fire monitoring system with LoRa wireless communication technology
Full text linkLoRa wireless communication technology with its ultra-low power consumption, long-distance communication ability
and high effi ciency data transmission, is being widely used in various fi elds, including electrical fi re monitoring system. The electrical fi re
monitoring system based on the technology is an advanced and dynamic fi re warning and monitoring solution, which can eff ectively monitor
and prevent the occurrence of electrical fi res and protect people’s lives and property safety. This paper fi rst analyzes the characteristics
and advantages of LoRa technology, the composition and principle of electrical fi re monitoring system, and then discusses the design of
electrical fi re monitoring system based on LoRa wireless communication technology combined with the safety needs of electricity in the
new era, in order to provide reference for the development of electrical fi re monitoring work
Research on Active Balance Control Strategy for Electric Vehicle Power Battery Pack
Full text linkThe battery pack of a pure electric vehicle is composed of multiple battery cells connected in series and parallel, and in the process
of battery charging and discharging and long-term use, it will cause an imbalance between the battery cells or battery packs, which affects the
capacity utilization and service life of the battery. This paper analyzes the electric vehicle lithium-ion battery pack as a study of equalization
control, and analyzes the equalization variables used for the battery pack, the battery model, the external characteristics of the battery, and the
SOC estimation based on the extended Kalman filter algorithm. The SOC is used as the equalization variable, so that all the battery cells are
basically at the same charging and discharging depth, which makes full use of the power of the battery pack, and improves the safety performance of the battery pack when it is working, and an equalization control simulation model is constructed in Matlab/Simulink software, and
the equalization method and the system of this paper for the battery cluster are simulated and researched
Analysis of Computer Network Information Security and Protection Strategies
Full text linkWith the rapid development of modern science and technology, computer technology has been widely applied in various fields
of construction in China, playing an important role. However, in practical development, it is precisely because network platforms have the
characteristics of virtuality and openness that it is easy to encounter various security issues in the use of computers. This not only brings a lot
of inconvenience to users’ work and life, but also may pose serious security threats to their privacy and property. Therefore, we must attach
great importance to the issue of computer network information security, continuously strengthen security protection, so that the property and
privacy of users can be respected and effectively protected
Research on thrust fl uctuation suppression and control algorithm of permanent magnet linear synchro
Full text linkCompared with the conventional rotary motor, the permanent magnet linear synchronous motor (PMLSM) has the advantages of
simple structure, large thrust and good fast response. However, due to the linear motor ripple disturbance and positioning force changes will cause
thrust fl uctuatio ns, but also aff ected by the end eff ect, slotting force and load changes, system parameter drift, nonlinear friction force, etc., resulting
in poor system controllability, which directly aff ects the positioning and trajectory tracking accuracy of the linear motor, by observing the thrust
fl uctuations of the permanent magnet linear synchronous motor, By using prediction function and fuzzy control algorithm, the thrust fl uctuation
suppression method based on fuzzy prediction function control is established, and the improved prediction function fuzzy controller is constructed.
According to the deviation and deviation change rate of the system, the parameters of the fuzzy controller are optimized and adjusted online by
using the proportional coeffi cient, so as to improve the comprehensive performance of the linear motor servo system, and provide the theoretical
basis and technical approach for realizing the high-performance linear motion system
Curriculum practice of the integration of information technology, biology and geography in junior high school based on project based learning——Take “scratch garbage sorting game” as an example
No full textthe writing background of this article is that the author participated in the practice of interdisciplinary school-based
curriculum development in geography. During the practice of school-based curriculum of information technology in junior high school,
it was found that project-based learning is a student-centered teaching mode based on real topic problems and students’ completion of
challenging and comprehensive tasks. Starting from the project-based learning teaching mode, this paper records and studies the practical
process of the integration of biology and geography in the process of programming teaching, and refl ects on the mode and signifi cance
of project-based learning in the integration of information technology and other disciplines in junior high school by studying the specifi c
implementation process of scratch garbage sorting games
Computer Virtual Reality Key Technology Research
Full text linkComputer virtual reality technology has developed rapidly, in the context of the "Internet +" era, has been widely used in many fields, but in the actual development process, it is also necessary to comprehensively analyse the key technologies, so as to lay a foundation for the subsequent application. Based on this, this paper analyses the key points of virtual reality technology from the computer, and on the basis of clear corresponding key technical content, combined with practical application cases to clarify the specific application methods for reference
Analysis of Communication Strategies and Approaches of Social Smart Elderly Caring Service Platform
Full text linkWith the development of Internet technology and the intensification of population aging, whether to provide effective smart old-age service security for the elderly has become a social public issue of concern. Through convenient Internet information technology, build an Internet communication platform for smart elderly caring services, and provide comprehensive care and convenience for the elderly with the help of elderly care information dissemination and community mutual assistance in the platform, in order to improve the quality of life of the elderly and the level of social elderly care services, and promote the development of community elderly care services and the elderly silver industry chain. Therefore, aiming at the possible problems in the information communication process of the social smart elderly caring service platform, this paper explores the effective communication strategies and approaches of the social smart elderly caring service platform, which has practical social significance and value