Movement Characteristics Research Articles

Recent developments in wearable piezoelectric energy harvesters.

Wearable piezoelectric energy harvesters (WPEHs) have gained popularity and made significant development in recent decades. The harvester is logically built by the movement patterns of various portions of the human body to harvest the movement energy and immediately convert it into usable electrical energy. To directly power different microelectronic devices on the human body, a self-powered device that does not require an additional power supply is being created. This Review provides an in-depth review of WPEHs, explaining the fundamental concepts of piezoelectric technology and the materials employed in numerous widely used piezoelectric components. The harvesters are classed according to the movement characteristics of several portions of a person's body, such as pulses, joints, skin, and shoes (feet). Each technique is introduced, followed by extensive analysis. Some harvesters are compared, and the benefits and drawbacks of each technique are discussed. Finally, this Review presents future goals and objectives for WPEH improvement, and it will aid researchers in understanding WPEH to the point of more efficient wireless energy delivery to wearable electronic components.

Spatial and temporal analysis of bottleneck flow for the elderly and the young pedestrians under multiple modes

The aging of the population is becoming a global concern. With the increasing number of the elderly, the growing traffic demands are facing greater challenges. The elderly with lower movement ability is more vulnerable to be injured in accidents. Collaborative assistant is an effective way to prevent accidents of falling down for the elderly. In this study, we carried out a series of controlled experiments involving the elderly and the young pedestrians under different modes, including the separate, mixed and synergistic modes. The traffic efficiencies of crowds under different movement modes are compared and their movement characteristics are analyzed. Through the spatial and temporal analysis, it can be found that the primary factor hindering the traffic efficiency of the elderly crowd is the longer time headway. The mean headway distance among homogeneous pedestrians is smaller than that among heterogeneous pedestrians with larger age differences. In addition, the fundamental diagrams under different movement modes are obtained and compared. The findings contribute to a better understanding of the movement for the young assisting the old in the crowded environment. The results have practical applications in the modeling and evacuation management for the public places where the elderly gathered, such as the aged care institutions.

Исследования математических моделей процессов деформаций зданий и сооружений

Purpose. The article is aimed at analyzing changes in the dynamic characteristics of a building and establishing the dependence of shear deformation accelerations on the building's storey to predict the effect of seismic vibrations on the technical condition of the building, taking into account the engineering and geological properties of the foundation. Methodology. A number of instrumental observations using geodetic devices, automated monitoring systems and engineering seismic stations were made to study the issues of assessing changes in the dynamic characteristics of high-rise buildings and structures. To create mathematical models of deformation processes of buildings and structures, the study of interaction of structural elements of the building with the engineering-geological structure of the ground in the upper and lower parts of the megapolis was proposed. Findings. The results on ground shaking intensity acceleration, effective duration, spectral coefficients and periods of spectrum maximum are obtained. The results of measurements of vibrations on different floors of a high-rise building based on instrumental records of seismic station of local and distant earthquake have been obtained. Dependences of accelerations of shear deformations on the floor of the building with regard to engineering-geological properties of the base have been established. Predictive models of deformation processes of the building taking into account dynamic characteristics of ground vibrations and energy class of earth crust movements have been proposed. Originality. The analytical technique of correlation analysis of random variables is proposed, by means of which normally distributed linear and nonlinear processes are studied to create a mathematical model of deformation processes of buildings of different storeys. Practical value. The obtained results of the study of deformation processes of buildings and their structural elements allow to predict the dynamic model of the process of displacements of points of the structure taking into account the dynamic characteristics of ground vibrations and energy class movements of the Earth's crust

The void characteristics of cement emulsified bitumen mixture under microwave heating by X-ray computed tomography

Excessive void content is an essential reason for the poor road performance of cement emulsified bitumen mixture (CEBM), while incorporating steel slag with high microwave responsiveness into CEBM and followed by microwave heating may be an effective method to reduce void content. To verify this hypothesis, this paper investigated the effect of microwave heating on the void characteristics of CEBM using X-ray computed tomography. The study mainly focused on the distribution characteristics of different-sized voids, the distribution uniformity of voids, and the shape characteristics of voids. The results revealed that the number of different-sized voids decreased significantly after microwave heating, especially the number of small-sized voids decreased the most. The reduction in void number improved the distribution uniformity of longitudinal and radial voids. However, it reduced the distribution uniformity of voids between the inner and outer sections of the specimen. Through the analysis of aggregate movement characteristics, it was found that the increase in the separation degree of inner and outer voids was due to the larger-sized aggregates being more efficiently distributed on the outer section of the specimen. Additionally, microwave heating reduced the complexity of void shapes. The reduction of void number and the improvement of void characteristics by microwave heating are expected to enhance the structural durability of CEBM, thereby improving its road performance.

Transient Flow Characteristics of a Pressure Differential Valve with Different Valve Spool Damping Orifice Structures

Lubrication system failure is a significant cause of in-flight shutdown incidents in aviation engines. The pressure differential valve, an essential component of a certain type of aviation engine lubrication system, is responsible for controlling the flow rate and pressure of the lubricating oil. Comprehending the transient flow characteristics of the pressure differential valve is of paramount importance for the secure operation of lubrication systems. This paper establishes a transient flow model of a pressure differential valve based on a transient computational fluid dynamics (CFD) method, and the experimental validation demonstrates the effectiveness of the computational model. The internal flow characteristics of the differential pressure valve at different stages during the opening process were studied. Additionally, four transient lubricating oil flow models with different valve spool damping orifice were established to analyse the impact of damping orifice structure on valve spool movement characteristics, pressure control characteristics, and flow field distribution. The results indicate that when the diameter of the valve spool damping orifice increases from 0.3 mm to 1.0 mm, the valve spool displacement and fluid force increase by 88 % and 20 %, respectively. Meanwhile, the peak valve spool velocity, peak oil supply pressure, and steady-state value decreased by 15 %, 29 %, and 34 %, respectively. As the length of the valve spool damping orifice increases from 0.894 mm to 4.0 mm, the growth rate of valve spool displacement and fluid force gradually decreases, with the peak valve spool velocity decreasing by 7 %. This study has potential significance for the structural optimization and application of pressure differential valve in lubrication systems.

Kinematic criteria determining swing movement of world class dancesport athletes

PurposeThe aim of the study was to identify the distinguishing characteristics of the swing movement of the world’s top dancesport couples through kinematic variables.MethodsThe study involved six world-class and six intermediate dance couples. The couples were asked to execute three identical series of three natural turns of the figure in a Viennese Waltz, all being filmed as they danced to music. Six international experts evaluated all the trials of each couple from the point of view of the technical quality component based on the Absolute Judging System. A triaxial rotational angular velocity measurement (gyroscope) device was placed on the dorsal part of the pelvic girdle and on the posterior part of the thorax of each competitor.ResultsAn analysis of covariance demonstrated that regardless of the sports level, the maximum hip girdle angular rotation velocity in the forward swing movement performed by men was significantly related to the judging score achieved (F1,9 = 11.5; p < 0.05; ηp2 = 0.45).ConclusionsThe mean squares of the differences of the hip and thoracic spine angular rotation velocity signals were found to be a good criterion for evaluating the swing movement, which is related to the judges’ evaluation. The descriptions of the performance of complex rotational movements obtained in this study can find their application in the analysis, teaching, and evaluation of dance couples. This is one of the first studies in the literature that deals in detail with swing movement in sports dance.

Influence of load parameters during landslide slope reinforcement with soil nails based on self-drilling hollow steel bars on their bearing capacity and strength properties

Introduction. Soil nails are widely used to reinforce landslide slopes and ground-retaining structures in many countries, including Russia. The interaction of soil nails with the soil base is of high interest to both engineers and researchers. The method of increasing the stability of landslide slopes with soil nails has proved to be versatile and cost-effective. However, the process of designing soil nails is usually carried out using empirical and semi-empirical methods that may ignore a number of important factors.Aim. To determine the most optimal angle of soil nail inclination, as well as to analyze the characteristics of soil movement of a landslide slope along a potential sliding surface and their influence on the bearing capacity of the soil nail and its strength characteristics.Materials and methods. A review of scientific publications on the influence of load parameters during landslide slope reinforcement with soil nails based on self-drilling hollow steel bar on their bearing capacity and strength properties was carried out. The review sample included 11 publications most relevant to the topic under study. Calculations were carried out using the PLAXIS 2D software environment.Results. The conducted calculations and literature review allowed the optimal angle of soil nail inclination in the slope to be established, which corresponds to a value ranging from 0° to 5° to the horizon. The study also showed that the development of shear stresses along the soil nail in time exhibits a non-uniform nature. Therefore, the assumption of a constant value of shear stresses along the entire length of the nail or anchor root can lead to an overestimation of the soil bearing capacity.Conclusions. The obtained results have confirmed the relevance of further research into the influence of load parameters during the reinforcement of landslide slopes using soil nails.

Patient's Healthy-Limb Motion Characteristic-Based Assist-As-Needed Control Strategy for Upper-Limb Rehabilitation Robots.

The implementation of a progressive rehabilitation training model to promote patients' motivation efforts can greatly restore damaged central nervous system function in patients. Patients' active engagement can be effectively stimulated by assist-as-needed (AAN) robot rehabilitation training. However, its application in robotic therapy has been hindered by a simple determination method of robot-assisted torque which focuses on the evaluation of only the affected limb's movement ability. Moreover, the expected effect of assistance depends on the designer and deviates from the patient's expectations, and its applicability to different patients is deficient. In this study, we propose a control method with personalized treatment features based on the idea of estimating and mapping the stiffness of the patient's healthy limb. This control method comprises an interactive control module in the task-oriented space based on the quantitative evaluation of motion needs and an inner-loop position control module for the pneumatic swing cylinder in the joint space. An upper-limb endpoint stiffness estimation model was constructed, and a parameter identification algorithm was designed. The upper limb endpoint stiffness which characterizes the patient's ability to complete training movements was obtained by collecting surface electromyographic (sEMG) signals and human-robot interaction forces during patient movement. Then, the motor needs of the affected limb when completing the same movement were quantified based on the performance of the healthy limb. A stiffness-mapping algorithm was designed to dynamically adjust the rehabilitation training trajectory and auxiliary force of the robot based on the actual movement ability of the affected limb, achieving AAN control. Experimental studies were conducted on a self-developed pneumatic upper limb rehabilitation robot, and the results showed that the proposed AAN control method could effectively estimate the patient's movement needs and achieve progressive rehabilitation training. This rehabilitation training robot that simulates the movement characteristics of the patient's healthy limb drives the affected limb, making the intensity of the rehabilitation training task more in line with the patient's pre-morbid limb-use habits and also beneficial for the consistency of bilateral limb movements.

The Influence of Learning Models on Students' Floor Exercise Learning Outcomes and Body Fitness

Physical Education, Sports and Health are important components of overall education. The goal is to develop various aspects of the individual, including physical fitness, motor skills, critical thinking skills, social skills, argumentative skills, emotional stability, moral integrity, healthy lifestyles, and awareness of the importance of a clean environment. Learning gymnastics is one of the physical education materials for sports and health that experiences many obstacles. Not yet optimal and very limited facilities and infrastructure are the causes of less effective physical education learning, especially floor exercise. Gymnastics is one of the PJOK materials that must be provided in schools, especially elementary schools. Currently, many types of exercise have emerged, such as morning exercise, physical fitness exercise, and other educational exercises, each exercise has its own movement characteristics. Learning gymnastics for elementary school children is a tool to achieve comprehensive development which includes mental, physical, social and emotional. Gymnastics learning, especially artistic gymnastics, is the material in PJOK learning that faces the most obstacles, including facilities and infrastructure for learning purposes which are expensive, the risk of injury is quite high, and is considered scary for the majority of students, therefore as a teacher you must try to make learning The gymnastics is packaged in an interesting way so that students will like it and so that students are no longer afraid of taking part in gymnastics lessons.

Physical Demands of Walking Football in Patients With Cardiovascular Risk Factors and Diseases.

To compare the exercise intensity of walking football (WF) with walking (WA) and to describe specific movement characteristics of WF. Cross-sectional study. Sports facilities Saarland University, Germany. Eighteen patients with cardiovascular risk factors CVRFs and diseases (13 men and 5 women, age: 69 ± 10 years). Patients completed a WF match and WA session of 2 x 10 min each. Video analysis was used to characterize movements during WF. Rate of perceived exertion (RPE, Borg Scale 6-20), % maximum heart rate (HR max ), musculoskeletal pain on a visual analog scale (VAS, 1-100 mm) before and up to 72 hours after exercise, and movement patterns during WF. The mean RPE during WF (12.1 ± 2.7) and WA (11.9 ± 3.0) did not differ ( P = 0.63). The mean HR during WF (79 ± 12% of HR max ) was higher than during WA (71% ± 11%; P < 0.01). The HR variability coefficient of variation during WF (10.3% ± 5.8%) and WA (7.1 ± 5.5%) did not differ ( P = 0.13). There was no influence of exercise mode (WF vs WA) on musculoskeletal pain perception ( P = 0.96 for interaction). Injury-inciting activities such as lunges (median: 0.5 [interquartile range (IQR) 0-1.3]) and goal kicks (median: 4 [IQR: 1.8-5.3]) occurred rarely during WF. Walking football might represent an alternative to WA for health prevention programs in patients with CVRF and diseases as it is characterized by a manageable cardiocirculatory strain, moderate RPE, low pain induction, and a low number of injury-inciting activities.

Characteristics of pedestrian evacuation from narrow seated area considering exit failure: experimental and simulation results

Narrow seated spaces with multiple exits are prevalent structures in public buildings, underscoring the paramount importance of facilitating swift evacuation in such constrained environments. In this study, we first conducted evacuation experiments in a realistic narrow seated area. By manipulating different availability conditions for two exits located at the ends of the long aisle, we studied the effects of unpredictable exit failures, specifically, how the exit switch and explicit guidance influence the evacuation process. The movement characteristics are explored in several aspects, such as pre-evacuation time, aisle conflicts, speed, distance headway, evacuation time, and time lapse. We found that once people have encountered the exit failure condition, they would demonstrate enhanced preparedness in subsequent trials, leading to expedited exit switches. With explicit guidance, people would be less hesitant and move faster in the main aisle. The fine-grid cellular automata model is extended based on the experimental observations to verify its feasibility in simulating this process. Conflict resolution and turning behavior are incorporated for a more nuanced description. The effects of the exit switch are parameterized through the informed probability and the speed reduction.

Physical Characteristics, Functional Movements and Coaching Style in Basketball

This study aims to develop a basketball player development plan based on assessing the effects of physical characteristics and functional movements on male and female students' performance in basketball. It incorporates Long Term Athletic Development (LTAD) frameworks to guide the training, competition, and recovery of student-athletes. The LTAD stages range from the active start, focusing on basic movements, to training to win, concentrating on high-level competition preparation. The research is significant for students, parents, teachers, and department heads, providing a structured approach to enhancing players' skills and ensuring safety during play. The methodology involves a quantitative approach, utilizing descriptive comparative-correlational research design to explore the relationship between functional movement, coaching style, and physical characteristics in basketball. The study encompasses students from multiple institutions, employing total enumeration sampling for comprehensive data collection. Ethical considerations emphasize informed consent, the right to withdrawal, and confidentiality. The findings aim to inform an enhanced player development plan, contributing to the academic and athletic success of college students.

Characteristics of crack spacing and crack width movement of early-age partially continuous reinforced concrete pavement under environmental loading: A full-scale field investigation

This study investigates the crack spacing and crack width movement of partially continuous reinforced concrete pavement (PCRCP) under environmental loading. To this end, full-scale field tests were carried out in the highway PCRCP test sections. Measured data were utilized to comprehensively understand the cracking spacing of test sections. The effect of design-related variables on the active crack and passive crack width movement was evaluated by changing the design variables. The results show that the partial continuous steel bars of PCRCP have a significant restraining effect on the shrinkage of pavement slab, and its restraining effect increases with the increase of the partial continuous reinforcement length. With the decrease of active crack spacing, the number of cracks decreases and the crack width decreases. PCRCP, by improving the reinforcement method, reduces the initial construction cost and does not affect its early performance. PCRCP adopts the active crack control method to obtain uniform crack spacing, thereby improving early-age cracking behavior significantly. The crack width prediction model proposed in this study is in good agreement with the field test measured values, and it is more suitable for crack width prediction of PCRCP design variables. Based on the prediction model proposed in this study, the crack width of PCRCP can be predicted so that the early performance of PCRCP can be improved by changing the design variables.

Dynamic characteristics of the sideways movement of pedestrians: An experimental study based on single-file experiments

In this paper, we investigate the dynamic characteristics of the sideways movements of pedestrians toward the left-hand side and right-hand side through a set of single-file experiments. We find that the velocities of pedestrians during sideways movement periodically fluctuate, and the corresponding spatiotemporal diagram of pedestrian movement exhibits a jagged pattern. In addition, by analyzing the fundamental diagrams, we find that the velocity and flow of the sideways movement toward the right-hand side are greater than the velocity and flow of the sideways movement toward the left-hand side at the same crowd density. By further exploring step frequency/step length-headway relations in rightward and leftward sideways movements, we find that the greater velocity observed in rightward sideways movement is primarily attributed to its higher step frequency. Finally, we systematically compare the dynamic characteristics of pedestrians when they move forward, backward, and sideways toward the left-hand side or right-hand side. Our comparison results indicate that among these four movement modes, the free speed and maximal flow rate of pedestrians in the sideways movement toward the left-hand side are the lowest. These findings provide new insights into pedestrian flow dynamics.

A fish appetite assessment method based on improved ByteTrack and spatiotemporal graph convolutional network

The appetite of fish significantly influences aquaculture efficiency and fish welfare. However, accurately assessing fish appetite has posed a challenging problem. Currently, the study of fish feeding behaviour relies primarily on the overall information obtained from images of fish schools, often overlooking the distinctive behavioural traits of individual fish. Analysing the behaviour of individual fish is hindered by challenges such as intraclass variation and cross-occlusion within real aquaculture environments. To address these challenges, this paper introduces a novel method for assessing appetite based on individual fish behaviour. The ByteTrack model was improved to enable stable tracking of each fish within a school under complex conditions. Additionally, this paper employs the spatiotemporal graph convolutional neural network (ST-GCN) to extract the movement characteristics of individual fish, facilitating accurate appetite assessment. The experimental results demonstrate that the proposed method achieves 98.47% accuracy in appetite assessment, surpassing the performance of other state-of-the-art methods. This paper provides a new opportunity and effective means for analysing fish behaviour and appetite in intricate environments.

Interdependence of movement amplitude and tempo during self-paced finger tapping: evaluation of a preferred velocity hypothesis.

This study examined the relation between movement amplitude and tempo during self-paced rhythmic finger tapping to test a preferred velocity account of the preferred tempo construct. Preferred tempo refers to the concept that individuals have preferences for the pace of actions or events in their environment (e.g., the desired pace of walking or tempo of music). The preferred velocity hypothesis proposes that assessments of preferred tempo do not represent a pure time preference independent of spatial movement characteristics, but rather reflects a preference for an average movement velocity, predicting that preferred tempo will depend on movement amplitude. We tested this by having participants first perform a novel spontaneous motor amplitude (SMA) task in which they repetitively tapped their finger at their preferred amplitude without instructions about tapping tempo. Next, participants completed the spontaneous motor tempo (SMT) task in which they tapped their finger at their preferred tempo without instructions about tapping amplitude. Finally, participants completed a target amplitude version of the SMT task where they tapped at their preferred tempo at three target amplitudes (low, medium, and high). Participants (1) produced similar amplitudes and tempi regardless of instructions to produce either their preferred amplitude or preferred tempo, maintaining the same average movement velocity across SMA and SMT tasks and (2) altered their preferred tempo for different target amplitudes in the direction predicted by their estimated preferred velocity from the SMA and SMT tasks. Overall, results show the interdependence of movement amplitude and tempo in tapping assessments of preferred tempo.

Informer Model based Wind Power Forecast with Tropical Storms Present

When severe tropical storms pass through, regional wind speeds fluctuate greatly, and the volatility of wind farm output also increases significantly. At the same time, the duration of tropical storms is long, and it is difficult for short-term time series data prediction models to be effective, in which case the unstable output of wind turbines will have a greater impact on power system dispatching. This paper first examines the characteristics of tropical storm movement, namely the change in wind speed, and then uses the Informer long time series data prediction model to predict the total change in wind turbine output in the next 10 days after the storm has passed. The actual case proves that the Informer model is ideal in predicting the long time series of wind power output during a tropical storm.

Analysis of the comparison between concentric and eccentric muscle strength in the bilateral knee joint of elite female volleyball players

&lt;p&gt;目的：本研究目的為探討優秀女子排球選手在雙側膝關節伸展與屈曲動作肌力與肌力平衡特徵之差異。方法：以等速肌力測量儀檢測參與者雙側膝關節之力矩，研究參與者為 16 名大專公開一級女子排球選手。統計分析以成對樣本t-tset比較女子排球選手在雙側膝關節伸屈肌力矩之差異及傳統式腿後肌與四頭肌比值 (hamstring to quadriceps strength ratio, H/Q 比值) 與功能性 H/Q 比值的差異，顯著水準訂為&amp;alpha; ＝ .05。結果：排球選手在雙側膝關節的伸屈肌向心最大力矩中，只有在 60 &amp;deg;/s 時的伸肌未達顯著差異，其餘向心最大力矩皆有達顯著差異，且慣用側大於非慣用側；在雙側膝關節肌力之伸屈肌離心最大力矩與傳統式 H/Q 比值皆未達顯著差異，傳統式 H/Q 比值雖未達顯著差異，但都低於理想的安全值；在功能性比值方面，60 &amp;deg;/s 時伸、屈動作皆未達顯著差異，而 180 &amp;deg;/s 時伸展與屈曲動作則皆達到顯著差異，且非慣用側大於慣用側。結論：參與者應加強雙側的腿後肌群向心力矩，以提高傳統式 H/Q 比值，降低受傷的風險。功能性比值在伸展與屈曲動作的爆發力矩皆出現差異，這與排球攻擊動作落地時以非慣用側著地緩衝的特性有關。因此，應重視非慣用側的肌力訓練，以降低受傷的風險，更進一步提升選手攻擊的能力。&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Purpose: The purpose of this study was to investigate the differences in muscular strength and muscle balance characteristics in bilateral knee joint flexion-extension movements of elite female volleyball players. Methods: The study utilized the isokinetic dynamometer to measure the torque of the knee joint in 16 collegiate division Ⅰ female volleyball players. Statistical analysis was us-ing paired sample t-tests to compare the differences in knee joint flexion-extension torque, tradi-tional H/Q ratio(hamstring to quadriceps strength ratio, H/Q ratio) and functional H/Q ratio be-tween the dominant and non-dominant sides, with a significance level set at &amp;alpha; = .05. Results: The study found that in the concentric maximum torque of knee joint flexion-extension muscles, sig-nificant differences were observed at all angular velocities except for the extension muscle at 60&amp;deg;/s. The dominant side exhibited greater torque than the non-dominant side. However, there were no significant differences in eccentric maximum torque and traditional H/Q ratio of knee joint muscles. Although the traditional H/Q ratio did not show significant differences, it remained below the ideal safety value. Regarding functional H/Q ratio, there were no significant differences in both flexion and extension movements at 60&amp;deg;/s, while at 180&amp;deg;/s, significant differences were observed in both flexion and extension movements, with the non-dominant side exhibiting greater values than the dominant side. Conclusion: Participants should enhance the concentric force of the traditional H/Q ratio to reduce the risk of injury. Discrepancies in functional ratios are evident in the torque generated during extension and flexion movements, attributed to the characteristic landing pattern, which involves buffering on the non-dominant side during volleyball attacking actions. Therefore, prioritizing strength training on the non-dominant side is crucial to mitigate injury risks and further enhance athletes’ attacking capabilities.&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;

Railway Line Capacity Relative to Additional Block Division

The article discusses the results of studies of railway line capacity relative to the application of additional block division using virtual blocks in the process of positioning a train reporting its position and train set integrity. The studies were conducted using the authors’ original simulation software enabling extensive parameterisation of infrastructure, including configuration of the train control system and signalling principles, by taking the actual characteristics of train movements into account based on data obtained from real-life measurements.

Simulation Analysis of Metallic Particles Movement in Typical Structure of Oil-immersed Power Transformer

The insulation performance of oil-immersed power transformers is closely involved with the movement of metal particle impurities, and the movement characteristics of metal particles are not only influenced by the electric field, but also by the oil flow. In this paper, a solid-liquid two-phase flow simulation model was constructed, and the effect of electric field on the motion of metal particles was considered. Firstly, the validity of the simulation model was verified by using the experimentally observed motion of metal particles in the horizontal oil channel between parallel flat plate electrodes, based on which the motion of metal particles in the typical oil channels of a 500kV power transformer was studied. It was found that when the metal particles passed through the oil flow inlet, the number of metal particles settling increased with the increase of particle size. All the metal particles with 1mm particle size sank in the oil flow inlet during the oil migration process, it was almost impossible to enter the low, medium and high voltage winding parts. Through the middle or upper end of the high voltage winding, the smaller particles (50μm, 150μm) would easily migrate with the oil flow and move faster; the larger particles (500μm) would move slower or be more easily deposited. This research holds significant practical implications in the engineering study of metal particle motion distribution within transformers.