As an important part of modern transportation system, intelligent logisties car is gradually changingthe traditional logisties mode by virtue of its elicient and aecurate operation characteristies.In this study , anintelligent logisties vehicle design scheme based on ST'M32 is proposed. K210 vision processing module iscombined with deep learning algorithm to realize the identification , grasping and eficient handling of objeets bycontrolling the rbot arm, which has the advantages of low cost, low energy consumption and high accuraey, andhas certain researeh value for the development of modern intelligent logistics industry.

Smartphones with built -in sensors and applications are being used as measurement tools in physiesexperiments and teaching.In this paper, the pressure sensor of a smartphone with a physical experimentapplication is used to measure the gas pressure at different depths in the swimming pool, and the localgravitational aceeleration is ealeulated by $tevin's Law,which is simple and feasible and has high measuremenaeeuracy.The experimental method is simple and feasible, and the measurement accuraey is high,.Carrying outphysies experiments and teaching based on smartphones can help stimulate students*interest in learning.reduce experimental costs , expand the experimental site , popularize physies knowledge, and improve scientificliteraey.

The refractive index of liquid is measured by combining the capillary phenomenon and theMichelson interference principle. Firstly, the relational expression between the speed at which the interferencefringes swallow (or spit out) and the refractive index of the liquid was deduced.In the experiment, a videorecording the changes of the interference fringes swallowing (or spitting out) when the liquid flowed out throughthe capillary tube was made.A Matlab program was written to proeess the data of the video to obtain the speed,and then this speed was substituted into the relational expression to caleulate the relractive index of the liquid.The relative error of the experimental result was 0.76%6,Thus, convenient, fast and accurate measurement of therefractive index of liquid was achieved.

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.

By measuring the refractive index of a solution at various temperatures, the relationship between itsoptical properties and temperature can be better understood."The Michelson interferometer, a precision opticameasurement tool, is widely used to measure refractive index. However, traditional Michelson intererometersrequire manual reading, which introduees subjeetivity and reduees aecuraey,ln this study, we designed andbuilt a Michelson interferometer system with intelligent reading capabilities to measure the refractive index ofdistilled water and a696 sodium chloride solution at different temperatures.During the experiment, the liquid tobe measured is placed in one optieal path of the interferometer, while the other path serves as a referenee,Aheating rod and temperature sensor are placed in the solution to heat it to the target temperature,The refractiveindex is then caleulated based on the changes in the interference fringes. Additionally, this study utilizes0penCV-based image proeessing technology to develop a prgram that allows the computer to automaticallydetect the image and caleulate the refraetive index at each temperature,This is done using a known referencefor refractive index and its relationship with temperature, and the corresponding data is presented in graphicalform for visual clarity,The experimental results demonstrate the system's effectiveness and highlight its potentialfor aecurate refractive index measurement in solutions.

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.

The interferenee phenomenon of two point light sourees is an important fundamental content of waveoptics.A simulation program was designed based on the Python software for displaying the interferencephenomenon of two point light sources in the global space. The light sources andobservation screen areeonstructed in the three-dimensional space coordinates.'The interference intensity in the observation sereen iscaleulated aeeording to the optical path dilferenee of the two point light sources reaching each point of thescreen,The coordinates of each points were transformed by a rotation matrix, so that the interference fringes inthe global space can be obtained.The results show that, various parameters can be adjust conveniently in thesimulation program, and the interference fringe patterns in the global space can continuously display , which isbeneficial to helping students understand the prineiple of light interferenee.

Resistance measurement is extremely critical in semiconduetor technology. When measuring theresistance of thin films by the traditional four-probe method, nonlinear fiting of the Van der Pauw function isrequired, which is not only time-consuming but also has poor accuracy,In view of this phenomenon, a Backpropagation neural network ( BPNN) neural network model based on the Levenberg-Marquardt (LM)algorithmis proposed. The IM algorithm combines the advantages of the gradient deseent method and the Newtonmethod, quickly approaches the global minimum during the iteration process, and is better than the puregradient descent method in the case of local minimum fall, The weight is adjusted by combining the backpropagation error of the BP neural network to achieve the fitting of complex nonlinear funetions, "The localparameters of the transeendental funetion ( Van der Pauw funetion) containing the inverse hyperbolie cosine arenonlinearly fitted, and a neural network fiuing model with a maximum deviation of 2.08x 109 and a relativestandard deviation of 2. 16 x 10-° is obtained. Compared with the normalized polynomial fitting method, theaccuraey is improved by 99.596.This improved method can greatly improve the stability and accuraey of themeasurement results."The model is applied to the experimental measurement process , which elfectively improvesthe resistivity test accuracy.

In response to the current demand for in-situ tesling in the fields of physies and materials for acontinuously controllable and adjustable temperature environment at both high and low temperatures, a passivevariable thermal resistanee strueture was designed with a G -M eryocooler as the cold source.This structure hasa high thermal conduetivity at low temperatures and a low thermal conduetivity at high temperatures, enablingthe sample temperature to be controlled and adjusted within a wide range of 6.2 .. 800 K without affecting thenormal operation of the G -M eryocooler,The system is simple in structure, stable and reliable in operation, andthe simulation and experimental verifieation results at both high and low temperatures are in good agreement.