The visualization of the ultrasonie propagation, interference and flaw can turn these abstraetultrasonie phenomena into visible images using simulation software , which can help students better understandthe knowledge about ultrasonie waves, This paper simulates the ultrasonie propagation under differenttemperature and medium , ultrasonie interferenee and ultrasonie flow using COMSOL, soltware.The theoreticalanalysis indicate that the simulation results are olvious and correet, This provides a strong support for theultrasonie waves study.

The experimental system of string vibration based on magnetoelectrie exeitation was employed tosystematieally invesligate the factors infueneing the resonant frequeney and wave velocity of standing wavesusing the controlled variable method.The experimental results show that the resonant frequeney isapproximately equal to the eigenfrequeney, with higher hamonie frequeney being integer multiples of thefundamental frequeney.'The resonant frequeney is proportional to the number of antinodes and the square root oftension , while inversely proportional to the string length and the square root of string density,The wave velocityis determined solely by tension and string density,This study not only verilfies the correctness of the theoretiealmodel of standing waves but also elleetively enhanees students "experimental skills and seientifie inquiryabilities.

The oplimization of experimental parameers and the eultivation of data analysis skills are erueial inuniversity physies experiments, This study systematieally measured the effects of filament voltage , first gridvoltage ,and rejection voltage on the relationship curve between plate current /, and second grid voltage Vex inthe Franek -Hertz experiment , obtaining 648 sets of experimental data and ploting the /,-Vex characteristiecurve, By combining theories such as thermionie emission, Boltzmann distribution , and electron-atom collisioneross-section ,the underying physical principles of different experimental phenomena were analyzed ,revealingthe relationship between parameter regulation and experimental phenomena,The effeetive range of experimentalparameters for the Franek-Hertz experiment was diseussed, Finally, based on the automatie peak-finding anddifferenee-by-differenee methods in Origin sofware , an ideal value for the first exeitation potential of argonatoms was obitained ,verifying the theory of atomie quantization energy levels,The theoretical analysis provided agood explanation for the experimental results, "This study provides a systematie optimization scheme for theparameters in Franek-Hertz experiment teaching and innovatively eombines theoretieal modeling with sofkwareanalysis ,enhaneing the credibility of experimental results and the value of teaching practice.

In view of the characteristics of integrated optics , electronies ,informatics ,science and engineering inthe opto-electronic information science and engineering major,as well as the needs of composite talents trainingunder the background of new engineering, this paper discusses the deep integration of frontier science andtechnology with experimental teaching, the deep combination of theoretical learing and practical applicationaround the laws of physical scienee and modern seientific and technological software tools,The multi-teachingmode of software and hardware integration is established.Through training students' practical ability ,ability tothink and solve complex engineering problems , seientifie research ability and innovation literaey , improvestudents' data analysis and processing skills ,in order to provide certain referenee and referenee for promotingthe reform of innovative talent training mode in eolleges and universities under the background of newengineering.

ln recent years , with the rapid development of artificial intelligence and deep learning technologies.facial recognition technology has been widely applied in aecess control systems due to its advantages ofcontaetless operation , high-precision recognition, and strong security.However,existing facial recognition accesscontrl systems still face umerous challenges in perormanee optimization , algorithm seleetion, and dataprocessing.These inelude balancing aecuracy and response speed, achieving effieient operation on resouree-constrained hardware devices , and ensuring data privacy and system reliability,'To address these issues , thisstudy , based on Huawei 's Aseend-developed MindSpore platform, conducts a comparative analysis of faciallandmarking and training algorithms, foeusing on the advantages and disadvantages of OpenCV and dlib infaeial landmarking. Experimental results indieate that dlib ofers superior accuracy and robustness inlandmarking,Therefore, dlib is used for initial facial feature point deteetion, and the ResNet deep leamingmodel is employed for deep feature extraction and classification training on multi-view facial datasets. Forhardware implementation ,the system utilizes Raspberry Pi 4B and Arduino tiNO development boards , with theML.X90614 infrared camera for real-time image acquisition and processing,The system is further enhaneed withmuli-target recognition , visitor aecess management ,and a visualized (jl design ,resulting in a high-perormancefacial recognition access control system,The findings of this study provide an effcient and reliable solution forthe intelligent upgrading of aeeess contrl systems and further validate the practical application potential ofMindSpore in small-scale embedded systems.

The absorption fber optie temperature sensor is a high-performanee temperature sensor that hasbeen widely used in various fields such as power systems, aerospaee ,and healtheare due to its characteristies ohigh temperature measurement accuraey and strong electromagnetie interferenee resistanee, Additionally , itssimple system structure and straightforward principle make it a popular choice among many universities forteaching students about the systems and principles of fber optic sensors, However,as fiber optie temperaturesensors are precision experimental instruments, students need to design them reasonably. In practice , manystudents end up with signilicant measurement errors or unsatisactory temperature measurement results due toimproperdesign.Therefore , this paper foeuses on the simulation design of the absorption fiber optie temperaturesensor using MATLAB, Thrugh this simulation design, students can validate whether their constneted fiberopie temperature sensors are reasonable, Mloreover, the simulation results can eneounage sludents to furtherinnovate on the design of fiber optie temperature sensors, Additionally, this apprach helps students betterunderstand the prineiples behind fiber oplie temperature sensors , ignites their interest in learning, and providesa foundation for cultivating relevant prolessional talents.

To address the disconneetion between traditional verifieation experiments and scientife researehpractiee in the teaching reform of the professional course Fiber Optie Sensors and Their Applications.In thispaper , with intensity modulation and phase modulation fiber sensor as the core ,a single mode-multimode-foueore fiber cascade strueture is designed as an innovative experiment of sensing struclure, Therefore,a three-in.one teaching model of knowledge consolidation, seientifie researeh practice and innovation training isconstructed.The design of oplical fiber sensing system which applied in liquid coneentration detection iscompleted by students through the practical tasks of the whole process of literature research, sensorpreparation , performanee testing and data analysis."The results show that the sensitivity of suerose solution ofthis sensor ean reach 0.16644nm/96 .The fit degrees of the interferenee valley wavelength , intensity and sueroseeoneentration are 0.9801 1 ,0.93636, respectively.By eonducting innovative currieulum experiment explorations,this initiative has not only effeetively stimulated shudents’research interests but also enhanced their practicacompetencies and innovative thinking.lt provides an extension of the integration of seience and edueation foeultivating high-quality applied talents with seientilie researeh accomplishment and innovative thinking underthe background of new engineering.

Focusing on the phenomenon of water droplet lenses, this paper conducts in-depth theoreticaanalysis on the surface morphology of droplets and their related optical parameters based on principles oldroplet surface tension ,fluid staties ,and an energy function corrected by contact angle.The influencing factorsof the optical parameters are summarized as follows: as the thickness of the water droplet increases , themagnification of the lens decreases ,and the resolution first increases and then decreases ;as the diameter of thewater droplet inereases , the magnilieation deereases ,and the resolution also first inereases and then deereases :the relraelive index of glass has almost no elleet on the oplical parameters of the lens.Through Matlabsimulations, the relative errors for magnification and resolution in each set of experiments are 2.7196 and4.796 , 1.1296 and 5.996 ,and 0.4496 and 2.13% ,respeclively ,indicating high credibility.This research not onlyadvanees related technologies but also provides innovaltive application ideas for multiple fields.

At present, accurately measuring the thiekness of liquid thin films remains challenging,especially forfragile soap films.Such measurements require nondestructive and high-precision optical instruments, which areevidently impractieal for routine applieations,ln this study , we propose a method for measuring the thickness olsoap films using light interference , offering a precise yet relatively practical approach for determining thethickness of micro/nano-seale liquid films.Due to the inluenee of gravity ,soap films typically exhibit a thinnetop and a thicker boltom. When illuminated by vertically ineident light , interferenee fringes of equal thicknessappear across the film,By measuring the distanee of these fringes from the upper edge , the local thiekness of thefilm relative to its topboundary can be obtained via intererenee techniques.ln this work, we measured therelative thickness distributions of soap films formed on plastie rings of three different shapes at various timepoints, analyzing how thiekness varies with verical height, Additionally, using a refined Michelsoninterferometer and the prineiple of equal inelination interference under monochromatie light , we determined theaetual thickness at the center region of the soap film,This method enables the measurement of thickness atvarious positions of a soap film , providing a referenee teehnique for measuring the thickness of other liquid.based thin films.

This study utilizes laser cutting technology to design and fabricate a difraction grating with avariable grating constant based on interlaced slit structure, This design allows for structural deformation tocontrol the beam without the elasticity of the material itself,Multiple experiments were conducted on this gratingto verify and demonstrate its application potential and advantages,The study also explores the impact andpatterns of grating design on diflraction elects, The results show that this grating is suitable for intuitivelydemonstrating difraction and applied in educational settings.