Electronics Science Technology and Application (E-Journal)
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337 research outputs found
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Simulation Design of a Single Six Story Elevator
Full text linkThis design is aimed at using Siemens S7-1500 series PLC as the control system, and using a single six story elevator simulation model as the controlled object. After consulting literature on PLC controlled elevator systems and studying the control technology schemes used in the literature, the control design for a single elevator was completed. A group control algorithm based on scheduling principles was adopted to minimize waiting time and receive call signals from each elevator. By calculating the time required for each elevator, the shortest elevator was selected for transportation. Compared to other group control algorithms, the implementation of this group control algorithm is simple, has a short development cycle, and has good control effects. It can well meet the design requirements of passenger capacity, average waiting time, average passenger travel time, and overall system energy consumption
Exploration and practice of bilingual teaching reform of Cross_x005fborder E-commerce -- Taking the e-commerce major of Anhui Xinhua College as an example
Full text linkFrom the perspective of the transformation and upgrading of cross-border industries and talent needs, this paper aims to
study the development of bilingual cross-border e-commerce courses and the cultivation of students’ and teachers’ practical ability. To
achieve the project as the carrier, to English as the medium, to professional ability training as the core goal of the research goal. To explore
the path of teaching reform that serves the local economy and promotes the development of t he cross-border e-commerce industry and talent
training needs. This will not only help to improve the teaching quality of applied undergraduate education and realize the educational goal
concept, but also help to promote the talent training of cross-border e-commerce industry, which will play a positive role in the development
of the industry
Research on low-energy information transmission based on wireless network
Full text linkIn this paper, the topological structure of the vehicle wireless network M2M(Machine to Machine) is used as the
experimental research model, and four kinds of light coeffi cients are set as factors aff ecting the experimental results, namely, light intensity
factor� and α, to represent the light intensity coefficient and influence factor. The remaining energy consumption of mobile terminal
equipment was measured respectively, the distance parameter from device to device, the maximum transmission energy consumption, and
the correlation coeffi cient between environmental parameters and energy consumption parameters was analyzed. This paper discusses the
impact of diff erent topTological structures on the environment, energy saving and emission reduction in the relatively fl at terrain area, based
on the planning scheme of parking area within the coverage range of base station signal, the transmission capability of vehicles as mobile
device nodes within the coverage range of base station signal, and the signal coverage range of base station under diff erent light intensity.
As the distance between the base station and the vehicle mobile device node changes, the maximum transmission energy consumption of the
mobile device node; Based on the above factors, the optimal performance optimization parking scheme and the optimal energy consumption
optimization transmission scheme are obtained
Adaptive fault-tolerant control of uncertain nonlinear systems under Actuator failure of unmanned aerial vehicles
Full text linkWith the increasingly extensive application of UAV technology, UAV accidents are increasing, and the safety problem
is becoming more and more serious. Therefore, it is urgent to ensure the safety and reliability of UAV. This paper fi rstly introduces the
application requirements and research signifi cance of the fault-tolerant control system of UAV; Secondly, the classifi cation of fault-tolerant
control system of UAV is introduced. Finally, taking the nonlinear system of UAV as an example, the controller and its parameters are
derived, and Simulink simulation model is established with MATLAB software to verify that the designed adaptive fault-tolerant controller
can eff ectively maintain the stability and reliability of the system
A Wideband Coaxial-to-Ridge waveguide Adaptor
Full text linkA Coaxial-to-ridge waveguide adaptor covering the entire K and Ka band has been demonstrated in this article. The adaptor
is in the form of asymmetric double ridge waveguides and characteristic impedances of each step is determined by Chebyshev polynomial.
A new method of calculating the characteristic impedance of the asymmetric double ridge waveguide is presented and the wideband adaptor
is designed on this basis. The simulated results for the proposed adaptor in HFSS show that the return loss is better than 17.8dB in the entire
K and Ka band and the insertion loss is better than 0.1dB. The simulated results for the back-to-back confi guration show that return loss is
better than 15 dB and insertion loss is better than 0.2dB. To demonstrate its performance, the adaptor is fabricated and then measured on the
vector network analyser. The measured results show that the average insertion loss of the adaptor is about 1dB in the whole band
Gas sensors for oxides synthesis by hydrothermal and microwave hydrothermal methods
Full text linkso far, gas sensors are playing an increasingly important role in environmental detection, agricultural production, medical
treatment and other fields. Semiconductor oxide gas sensors are often used to detect toxic gases because of their low cost, simple
manufacture, fast response, good selectivity and high sensitivity. There are many methods to prepare semiconductor oxides, such as
hydrothermal synthesis, microwave hydrothermal synthesis and sol-gel synthesis. The advantages of hydrothermal synthesis and microwave
hydrothermal synthesis are high economic efficiency and simple operation. The synthesized oxides have many different morphologies,
such as zero dimensional, one-dimensional, two-dimensional, three-dimensional and so on. These diff erent morphologies are conducive to
gas diff usion and enhance gas sensing performance. Especially the hierarchical structure can greatly improve the gas sensing performance
due to its large specifi c surface area, large porosity and high carrier concentration. This paper describes the SMO gas sensor prepared by
hydrothermal method and microwave hydrothermal method
Creative design education research on multi-dimensional integration of visual communication design under the driving force of digital design
Full text linkIn 2022, a new era was born - “meta universe”, the concept of the rapid potential to penetrate into all walks of life, and
with the arrival of the “meta universe” era, its transformation and change also bring new opportunities to the fi eld of visual communication
design. In the more than 40 years of reform and opening up, visual communication design has undergone several periods of educational
development from the change of discipline names: Decoration design, graphic design and visual communication design period, from
the name change, it is not diffi cult to see that visual communication design is changing step by step towards the integration of all media,
especially in the “new liberal arts”, “digital design”, “meta-universe” driven by this big change, visual communication design has further
become a cross-border design integration professional
Design of a smart classroom based on OpenHarmony
Full text linkThere are many intelligent equipment manufacturers in the traditional wisdom classroom, and the control software used
is various, so the operation is not convenient, and the equipment can not be unifi ed control. And the system used by the equipment is not
domestic autonomou s and controllable, and the integration degree with education and teaching is also low, and the educational role is small.
Therefore, a smart classroom scheme based on OpenHarmony is designed. This paper mainly describes the background, structure and
implementation of the scheme design, including OpenHarmony intelligent central control, Internet of Things gateway, classroom central
control software, digital twin, integrated management platform and other modules development and design. Through OpenHarmony,
the scheme realizes the localization of the classroom intelligent device system and the connection of the whole scene, which provides
convenience for the unifi ed control of the classroom; At the same time, through the digital twin smart classroom system and other central
control software to increase the education space of the classroom, so that the classroom can play a greater educational signifi cance
Research on Frequency Synthesizers for Analogue Integrated Circuits Based on EDA Technology
Full text linkThe application scope of EDA technology is very wide, and the technology has been generally recognized in the process of promotion. In the context of the rapid development of integrated circuits, the application of EDA technology should be further strengthened to promote the continuous development of China's electronic information field. In this paper, the frequency synthesizer of analog integrated circuits based on EDA technology is studied, and its main performance indicators, applicable technology and reinforcement design are briefly analysed
The Value, Risks and Legal Regulation Path of Artificial Intelligence Algorithms in Public Health Events
Full text linkIn the response to public health events, AI algorithms based on medical big data have generated value in many ways: AI based on medical big data can not only improve the accuracy of diagnosis, alleviate the difficulties of medical staff shortage, but also reduce the risk of medical workers contracting diseases. The use of this technology has also given rise to a number of risks, such as infringement of patients' personal information, unclear delineation of liability and risk, etc. In response to these shortcomings, relevant legal regulation paths have been constructed to better resolve the problems in the use of technology and to strongly protect the legitimate rights and interests of citizens