# Investigation on the Status Quo of Students’ Physical Fitness Based on Wireless Communication Networks and Analysis of Influencing Factors

Authors: Ping Zeng
Journal: Security and Communication Networks
 (2022)

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## Abstract

Students are the future of the nation and the hope of the country. The physical health of adolescents can to a large extent reflect the level of political, economic, and cultural development of a country. The healthy growth of young people is the driving force behind the prosperity of the Chinese nation. The improvement of the physical fitness of young people is related to the healthy development of every student and the happiness of thousands of households. Students are the driving force for the development of a region and even a country, and their physical health is closely related to the prosperity and development of the region and the country. The physical health of students is very severe, various indicators are declining, and it is urgent to investigate the status quo of students’ physical fitness and analyze the influencing factors. This paper mainly designs a wireless communication platform to detect the physical status of students and optimize the wireless communication network. This paper investigates the students’ weight, vital capacity, 50 m running, and sitting posture. It is found that freshman girls who failed sitting posture accounted for 3%, sophomore girls 2%, junior girls 2.6%, and senior girls 4.8%. The first-year boys who failed the sitting position accounted for 6%, the second-year boys 3.4%, the third-year boys 9.2%, and the fourth-year boys 9.3%.


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## Body

## 1. Introduction

Students have many serious physical health problems that cannot be ignored, and their physical condition is getting worse and worse. The results of the Fifth National Physical Health Survey in 2005 showed that the physical health of adolescents is poor, the overweight and obesity rate of students has increased, and the various indicators of students have fallen, especially their vitality. The wireless communication system can make maximum use of various resources such as frequency domain, time domain, code domain, and space domain. It provides large-capacity communication capabilities and supports high-quality multirate multimedia services, realizing a multiservice, multifrequency, multimode, and multimedia-converged wireless environment. This puts forward higher requirements for the physical resource allocation mechanism of the wireless communication system and the design of communication signal processing.The physical fitness of students plays an important role in the modernization process and the prosperity of the country. The physical condition of the younger generation is closely related to the strength of the country and the rise and fall of the nation. This provides a theoretical basis for the school’s sports work. By investigating and analyzing the current status of students’ physical health in this school, it sums up the factors that affect students’ physical health. It puts forward corresponding suggestions for the unfavorable factors of school management, which can provide a certain theoretical reference basis for students’ physical health work. At the same time, it can also provide a useful reference for the research and development of physical health.Regarding wireless communication networks, related scientists have conducted the following research. YaoF considers a cluster-based cooperative spectrum sensing (CSS) scheme in the energy harvesting cognitive wireless communication network (EH-CWCN), in which cognitive nodes (CN) are clustered according to their received power levels to improve sensing performance. YaoF’s research goal is to maximize the average throughput of EH-CWCN by determining the optimal parameter set, including the duration of energy collection and spectrum sensing, local detection threshold, and the number of CN. In addition, it is difficult to determine the optimal local detection threshold for CN at different received power levels. He achieved the optimal parameter set by using dichotomy and a simplified linear search method. Finally, the effect of theoretical analysis and optimization parameters on the system performance is verified and demonstrated through numerical simulation [1]. An important problem of wireless communication networks (WCNs) is that they have the least resources, which leads to a high security threat. Intrusion Detection System (IDS) is a method to discover and detect attacks. Narendrasinh B, G proposes a Fuzzy Lion Bayes System (FLBS) for intrusion detection. He uses KDD CUP data to evaluate the performance of the proposed FLBS system and compares and analyzes the existing evaluation indicators, accuracy, and false acceptance rate (FAR). The experimental results show that the system has the greatest performance, which illustrates the effectiveness of the system in intrusion detection [2]. Starting from the classic model of renewable energy harvesting technology, Hu et al. set out to constrain and optimize different energy harvesting wireless systems, such as point-to-point, multipoint-to-point, and multipoint-to-multipoint. Hu et al. also reviewed wireless power and information transmission technologies, which provide a special realization of energy harvesting wireless communication. Hu et al. also sorted out the potential applications of energy harvesting technology in emerging (or upcoming) 5 G/B5G communication systems. According to reports, effective energy redistribution and two-way transactions can significantly reduce the electricity bills of wireless service providers and reduce brown energy consumption [3]. Fasoulakis et al. provide a new theoretical framework to study several forms of efficient and stable system operating points in the context of wireless communication networks to meet the concept of equilibrium. Considering the wireless communication environment in the presence of Gaussian Interference Channel (GIC), a noncooperative game between users is studied, in which users selfishly meet their quality of service (QoS) prerequisites, that is, data rate. They studied and evaluated these equilibrium operating points in a formal and quantitative manner and created some new theoretical concepts, namely, the efficiency price, the maximum price of efficiency, and the maximum price of satisfaction. It expresses the distance between the realized utility and the corresponding cost or satisfaction equilibrium of a given objective function. Finally, the performance evaluation of the proposed framework is obtained through modeling and simulation [4]. Regarding the health survey, related scientists have conducted the following research. Kaur et al. investigated the association between child health and family livestock ownership. They conducted a cross-sectional study using data from a population and health survey of 215,971 rural children under 5 in 30 sub-Saharan African countries from 2005 to 2015. Kaur et al.’s analysis is consistent with the theory that livestock may have a dual role, that is, indicators to prevent stunting, chronic malnutrition, and risk factors for all-cause mortality in children, which may be related to acute infections. However, the heterogeneity of different countries suggests that more data on specific household livestock management practices are needed [5]. Drakoulidou et al. conducted a cross-sectional analysis of food insecurity data collected from the New South Wales Demographic Health Survey from 2003 to 2014, using multiple logistic regression to analyze the associations between key sociodemographic variables. In New South Wales, an average of 6% of adults over the age of 16 have experienced food insecurity. The probability of food insecurity seems to have increased 1.05 times from one survey year to the next. It was found that food insecurity was independently related to age, gender, marital status, family size, education, employment status, family income, smoking status, alcohol intake, and self-rated health status. The correlation with income, smoking status, and self-rated health seems to be the strongest among all covariates and shows a gradient effect. Food insecurity seems to increase significantly between 16 and 19 years of age [6]. The purpose of Beynon and Fone is to identify important risk factors related to childhood obesity from the data of the Welsh Health Survey from 2008 to 2012. Beynon and Fone used survey data from 11,279 children aged 4–15. Lifestyle variables considered as potential risk factors for obesity include intake of sugary beverages, unhealthy food consumption, physical activity, and currently treated diseases. Sociodemographic and socioeconomic factors include gender, age, national statistical socioeconomic classification, and housing rights. A total of 1,582 (20%) children were obese, and it was found that there was a significant association between obesity and suffering from the disease and the physical activity of obese children does not conform to the normal law of physical activity. Every child should meet the regularity of physical activity, and those with the disease should receive a care plan to prevent or control obesity [7]. These methods have provided some references for our research, but due to the short time and small sample size of the relevant research, the research has not been recognized by the public.The innovation of this paper lies in the introduction of the concept of wireless communication network, with bus technology, measurement and control technology, and network technology as the link, based on the open and standardized bus virtual instrument architecture, combined with program-controlled instruments and special test instruments to form a hybrid bus platform structure. The wireless communication equipment designed in this paper is used to detect the physical condition of a school student. The detection items include height and weight, 50 m running status, vital capacity, and sitting forward bending.


## 2. Investigation Methods of the Current Situation of Students’ Physical Health

### 2.1. Wireless Communication Network

Wireless communication is a communication method that uses the propagation of electromagnetic waves in free space to transmit and exchange information. Because wireless communication overcomes the limitations of wired communication in a certain geographic location at the receiving and transmitting positions, it greatly expands the scope of communication and human activities. With the development of wireless communication technology, people began to regard personal communication as the ultimate goal of communication, which is to use all possible network technologies to exchange information with any terminal, anytime, anywhere, and anyone [8]. The wireless management system uses a wireless network to connect sensors, controllers, and actuators to perform feedback control. The use of wireless networks provides complete mobility, installation, flexibility, and rapid configuration while reducing maintenance costs. Therefore, the use of wireless network management has a wide range of application potential.The wireless management platform relies on the wireless components of the WLAN hardware components to collect information and monitor the entire network structure and network equipment. Its functional requirements ensure the integrity of network line traversal, the normal operation of network equipment (AC, AP), and the transmission of information and data [9]. Figure 1 is a block diagram of a wireless communication network management system.Figure 1
Block diagram of wireless communication network management system.According to different communication equipment, communication content, and communication methods, various wireless communication networks can be divided into cellular mobile communication systems, satellite mobile communication systems, and radio communication systems. Cellular mobile communication and broadband wireless access systems provide users with various content services and continue to develop, which have changed the way people interact daily [10].To optimize the wireless communication network, the objective function in the optimization is a fractional form. Therefore, the optimization problem is a nonconvex optimization problem. In addition, with the existence of the RB allocation index parameterpl,i, the optimization problem becomes a more complex NP-hard problem, which is difficult to solve directly. To make the optimization problem into a form that can be solved, we first perform an equivalent transformation of the optimization problem based on the nature of the optimization objective function and the cell user QoS constraints as follows:(1)Qi=∑l=iLpl,ilog21+mihi1+ml,igl,iI≥Qc,∀i,dl,i=himl,i,El,i=hi+αchi,lI,fl,i=αcmi,lIgi,lI,where Qc, Qc is the minimum data transmission rate requirements of cell users. ml,i is the transmit power of the transmitting end to the first pair of D2D users who perform data transmission on the i-th RB. mi is the downlink transmit power of the user in the i-th cell for communication.It is assumed that the lth D2D user reuses the RB of thei-th cell user for data transmission; that is, pl,i=1. According to the QoS inequality of the CU in the above formula, we can obtain the following inequality about the base station transmit power:(2)mi≥αc1+ml,igl,iIhi,Pc=∑l=1L2pcl.Based on this, substituting the expressionpi∗ into the objective function βee and the constraints, the optimization problem can be written in the following equivalent form:(3)βee=∑l=1L∑i=1Kpl,ilog1+ml,idl,i∑l=1L∑i=1Kpl,iml,i+Pc,∑l=1Lpl,i≤1,∀i,∑l=1Lpl,iml,i≤Plmax,∀l,∑i=1K∑l=1Lpl,iαchiml,igl,iI≤PBSmax−∑i=1Kαchi,where βee, βee is the optimization goal. pl,i is the constraint target. βee∗ is the optimal value of optimization objective.Assuming thatβee∗ is the optimal value of the optimization objective and pl,i,ml,i is the optimal parameter value that can be obtained, then the optimization objective function can be written in the following form:(4)βee∗=maxpl,i∗,ml,i∗BA2Apl,i∗,ml,i∗MA2Apl,i∗,ml,i∗.Based on the theory of nonlinear fractional programming, the fractional objective function can be equivalently transformed into the following subtractive form:(5)Spl,i∗,ml,i∗=maxpl,i∗,ml,i∗BA2Apl,i∗,ml,i∗−βee∗MA2Apl,i∗,ml,i∗,MD2D=∑l=1L∑i=1Kpl,ilog21+λml,i,λml,i=ml,idl,iEl,i+fl,iPl,i,λ″ml,i=−2ml,idl,ifl,iEl,i+fl,iPl,i3≤0.To facilitate the subsequent solution of the optimization problem, we use fractional programming theory to convert the median objective function into the following subtractive form:(6)maxpl,i,ml,i∑l=1L∑i=1Kpl,ilog21+ml,idl,icl,i+fl,ipl,i−βee∑l=1L∑i=1Kpl,iml,i+Pc,maxpl,i,ml,i∑l=1L∑i=1Kpl,ilog21+dl,icl,i+fl,iUl,i/pl,i⋅Ul,ipl,i−βee∑l=1L∑i=1KUl,i+Pc,∑i=1Kpl,i≤1,∀la2+b2,∑i=1KUl,i≤Plmax,∀l,∑i=1K∑l=1LUl,iαchigl,iI≤PBSmax−∑i=1Kαchi.The network environment, network structure, and user distribution of wireless communication networks are not fixed but are constantly changing. Increasing the scale of wireless networks, network coverage, changing network traffic patterns, and business models can change the performance and performance of wireless networks. To adapt to different changes in wireless networks, we need to increase wireless network optimization and constantly correct network changes.When the wireless network coverage is uneven, the sound quality is poor, and the sound quality is degraded. Network optimization is more important for failures such as chat, access errors, and channel blocking. Only by continuously optimizing the wireless communication network, can the number of call connections be reduced, can the drop rate be reduced, can the call quality be improved, and can the network reliability and availability be improved. This not only improves the quality of user experience but also improves communication, which brings significant long-term economic benefits [11].The development of wireless communication has the following trends:(1)
The seamless network coverage requires network access at any time and any place.(2)
Broadband is an inevitable trend, and narrowband, low-speed networks have gradually been replaced.(3)
The data rate is getting higher and higher, and the spectrum bandwidth is getting wider and wider.(4)
The terminal is becoming increasingly intelligent.With the increasing number of wireless communication standards, it has become a development trend to use software radio ideas to concentrate baseband digital processing functions and basic mobile phone peripheral functions into a single-chip system on a chip (SoC).


### 2.2. Physical Health

The National Student Physical Health Standard is formulated to implement the guiding ideology of health, first, effectively strengthen school physical education, promote students to actively participate in physical exercise, develop good exercise habits, and improve physical health. The connotation of the “National Student Physical Health Standard” is an evaluation standard for measuring the physical health of students and the effect of exercise. It is also the country’s basic requirement for the physical health of students of different ages and an individual evaluation standard for students’ physical health. The concept of health includes physical health, mental health, and social adaptation. The “National Student Physical Health Standard” covers the physical health of students closely related to school sports. To define its connotations and avoid confusion with the three-dimensional concept of health, “physique” is used as the attribute of “health” to show its connotations. The standard comprehensively assesses the physical fitness level of students from the aspects of body shape, physical function, and physical fitness. It is an educational method that promotes the healthy development of students’ physique and encourages students to actively take physical exercise. It is also an important part of the national Student Development core literacy system and academic quality standards and an individual evaluation standard for students’ physical health.Physique is mainly reflected in body shape, physiological function, and psychological factors. Therefore, the scope of physics generally includes the shape of the human body, physiological functions, and psychological factors. Its main manifestations are as follows: (1) the level of morphological development, including physique, body shape, and posture; (2) normal function level, including the structure and normal function of various organs and the normal function of the human body system; (3) physical ability and mental quality: physical conditions including speed quality, strength quality, endurance quality, and agility quality; psychological quality including the level of mental health, its characteristic personality, and cognitive ability [12].Health refers to the physical, mental, and social state of an individual, and it is a three-dimensional idea. One of the main health problems is physical problems, and there is no health without a good physique, and health is the manifestation of our good health. Therefore, we need to strengthen our bodies to maintain our health. From a physiological point of view, it mainly shows the shape and structure of the human body, physical and mental development, and sports performance. From a health perspective, it mainly refers to adaptation to the environment, mental health, disease, hygiene, and lifestyle. Therefore, physique and health are related and different. On the one hand, physique is the prerequisite and basis for health, and the most important thing for health is a good body. On the other hand, health is the main goal of physical fitness, and we have to find ways to strengthen it. In fact, to serve a healthy lifestyle, physical health is generally determined by the body’s physical development, physical function, athletic ability, and mental state. Therefore, the physical condition of students is generally monitored based on four parameters: height, physical condition, physical condition, and athletic ability [13].


## 2.1. Wireless Communication Network

Wireless communication is a communication method that uses the propagation of electromagnetic waves in free space to transmit and exchange information. Because wireless communication overcomes the limitations of wired communication in a certain geographic location at the receiving and transmitting positions, it greatly expands the scope of communication and human activities. With the development of wireless communication technology, people began to regard personal communication as the ultimate goal of communication, which is to use all possible network technologies to exchange information with any terminal, anytime, anywhere, and anyone [8]. The wireless management system uses a wireless network to connect sensors, controllers, and actuators to perform feedback control. The use of wireless networks provides complete mobility, installation, flexibility, and rapid configuration while reducing maintenance costs. Therefore, the use of wireless network management has a wide range of application potential.The wireless management platform relies on the wireless components of the WLAN hardware components to collect information and monitor the entire network structure and network equipment. Its functional requirements ensure the integrity of network line traversal, the normal operation of network equipment (AC, AP), and the transmission of information and data [9]. Figure 1 is a block diagram of a wireless communication network management system.Figure 1
Block diagram of wireless communication network management system.According to different communication equipment, communication content, and communication methods, various wireless communication networks can be divided into cellular mobile communication systems, satellite mobile communication systems, and radio communication systems. Cellular mobile communication and broadband wireless access systems provide users with various content services and continue to develop, which have changed the way people interact daily [10].To optimize the wireless communication network, the objective function in the optimization is a fractional form. Therefore, the optimization problem is a nonconvex optimization problem. In addition, with the existence of the RB allocation index parameterpl,i, the optimization problem becomes a more complex NP-hard problem, which is difficult to solve directly. To make the optimization problem into a form that can be solved, we first perform an equivalent transformation of the optimization problem based on the nature of the optimization objective function and the cell user QoS constraints as follows:(1)Qi=∑l=iLpl,ilog21+mihi1+ml,igl,iI≥Qc,∀i,dl,i=himl,i,El,i=hi+αchi,lI,fl,i=αcmi,lIgi,lI,where Qc, Qc is the minimum data transmission rate requirements of cell users. ml,i is the transmit power of the transmitting end to the first pair of D2D users who perform data transmission on the i-th RB. mi is the downlink transmit power of the user in the i-th cell for communication.It is assumed that the lth D2D user reuses the RB of thei-th cell user for data transmission; that is, pl,i=1. According to the QoS inequality of the CU in the above formula, we can obtain the following inequality about the base station transmit power:(2)mi≥αc1+ml,igl,iIhi,Pc=∑l=1L2pcl.Based on this, substituting the expressionpi∗ into the objective function βee and the constraints, the optimization problem can be written in the following equivalent form:(3)βee=∑l=1L∑i=1Kpl,ilog1+ml,idl,i∑l=1L∑i=1Kpl,iml,i+Pc,∑l=1Lpl,i≤1,∀i,∑l=1Lpl,iml,i≤Plmax,∀l,∑i=1K∑l=1Lpl,iαchiml,igl,iI≤PBSmax−∑i=1Kαchi,where βee, βee is the optimization goal. pl,i is the constraint target. βee∗ is the optimal value of optimization objective.Assuming thatβee∗ is the optimal value of the optimization objective and pl,i,ml,i is the optimal parameter value that can be obtained, then the optimization objective function can be written in the following form:(4)βee∗=maxpl,i∗,ml,i∗BA2Apl,i∗,ml,i∗MA2Apl,i∗,ml,i∗.Based on the theory of nonlinear fractional programming, the fractional objective function can be equivalently transformed into the following subtractive form:(5)Spl,i∗,ml,i∗=maxpl,i∗,ml,i∗BA2Apl,i∗,ml,i∗−βee∗MA2Apl,i∗,ml,i∗,MD2D=∑l=1L∑i=1Kpl,ilog21+λml,i,λml,i=ml,idl,iEl,i+fl,iPl,i,λ″ml,i=−2ml,idl,ifl,iEl,i+fl,iPl,i3≤0.To facilitate the subsequent solution of the optimization problem, we use fractional programming theory to convert the median objective function into the following subtractive form:(6)maxpl,i,ml,i∑l=1L∑i=1Kpl,ilog21+ml,idl,icl,i+fl,ipl,i−βee∑l=1L∑i=1Kpl,iml,i+Pc,maxpl,i,ml,i∑l=1L∑i=1Kpl,ilog21+dl,icl,i+fl,iUl,i/pl,i⋅Ul,ipl,i−βee∑l=1L∑i=1KUl,i+Pc,∑i=1Kpl,i≤1,∀la2+b2,∑i=1KUl,i≤Plmax,∀l,∑i=1K∑l=1LUl,iαchigl,iI≤PBSmax−∑i=1Kαchi.The network environment, network structure, and user distribution of wireless communication networks are not fixed but are constantly changing. Increasing the scale of wireless networks, network coverage, changing network traffic patterns, and business models can change the performance and performance of wireless networks. To adapt to different changes in wireless networks, we need to increase wireless network optimization and constantly correct network changes.When the wireless network coverage is uneven, the sound quality is poor, and the sound quality is degraded. Network optimization is more important for failures such as chat, access errors, and channel blocking. Only by continuously optimizing the wireless communication network, can the number of call connections be reduced, can the drop rate be reduced, can the call quality be improved, and can the network reliability and availability be improved. This not only improves the quality of user experience but also improves communication, which brings significant long-term economic benefits [11].The development of wireless communication has the following trends:(1)
The seamless network coverage requires network access at any time and any place.(2)
Broadband is an inevitable trend, and narrowband, low-speed networks have gradually been replaced.(3)
The data rate is getting higher and higher, and the spectrum bandwidth is getting wider and wider.(4)
The terminal is becoming increasingly intelligent.With the increasing number of wireless communication standards, it has become a development trend to use software radio ideas to concentrate baseband digital processing functions and basic mobile phone peripheral functions into a single-chip system on a chip (SoC).


## 2.2. Physical Health

The National Student Physical Health Standard is formulated to implement the guiding ideology of health, first, effectively strengthen school physical education, promote students to actively participate in physical exercise, develop good exercise habits, and improve physical health. The connotation of the “National Student Physical Health Standard” is an evaluation standard for measuring the physical health of students and the effect of exercise. It is also the country’s basic requirement for the physical health of students of different ages and an individual evaluation standard for students’ physical health. The concept of health includes physical health, mental health, and social adaptation. The “National Student Physical Health Standard” covers the physical health of students closely related to school sports. To define its connotations and avoid confusion with the three-dimensional concept of health, “physique” is used as the attribute of “health” to show its connotations. The standard comprehensively assesses the physical fitness level of students from the aspects of body shape, physical function, and physical fitness. It is an educational method that promotes the healthy development of students’ physique and encourages students to actively take physical exercise. It is also an important part of the national Student Development core literacy system and academic quality standards and an individual evaluation standard for students’ physical health.Physique is mainly reflected in body shape, physiological function, and psychological factors. Therefore, the scope of physics generally includes the shape of the human body, physiological functions, and psychological factors. Its main manifestations are as follows: (1) the level of morphological development, including physique, body shape, and posture; (2) normal function level, including the structure and normal function of various organs and the normal function of the human body system; (3) physical ability and mental quality: physical conditions including speed quality, strength quality, endurance quality, and agility quality; psychological quality including the level of mental health, its characteristic personality, and cognitive ability [12].Health refers to the physical, mental, and social state of an individual, and it is a three-dimensional idea. One of the main health problems is physical problems, and there is no health without a good physique, and health is the manifestation of our good health. Therefore, we need to strengthen our bodies to maintain our health. From a physiological point of view, it mainly shows the shape and structure of the human body, physical and mental development, and sports performance. From a health perspective, it mainly refers to adaptation to the environment, mental health, disease, hygiene, and lifestyle. Therefore, physique and health are related and different. On the one hand, physique is the prerequisite and basis for health, and the most important thing for health is a good body. On the other hand, health is the main goal of physical fitness, and we have to find ways to strengthen it. In fact, to serve a healthy lifestyle, physical health is generally determined by the body’s physical development, physical function, athletic ability, and mental state. Therefore, the physical condition of students is generally monitored based on four parameters: height, physical condition, physical condition, and athletic ability [13].


## 3. Investigations and Experiments on the Status Quo of Students’ Physical Health

Wireless communication network equipment mainly includes various radio stations. To test whether the radio station can meet the requirements for use, it is necessary to test a number of key performance indicators of the radio station. To meet the various test requirements of different tools under test, it is necessary to ensure that their test systems have an open architecture. This requires the adoption of the standard and modular models for the entire system platform and strict hardware requirements for each test device to match the test capabilities and flexibly carry out secondary software development.The integration of automatic test systems must follow the principles of advancement, practicability, openness, versatility, reliability, and maintainability. It adopts advanced and mature hardware technology as much as possible, such as open system structure, advanced computer control technology, and optimized network technology. It establishes an economical, reasonable, resource-optimized system integration scheme, which enables the automatic test system to have complete functions, high test accuracy, and reliable performance and to maximize the need for future test tasks and technological development changes [14]. Following these principles, the architecture of the automatic test system for wireless communication equipment is shown in Figure 2. Its design is based on bus technology, measurement and control technology, and network technology, based on an open and standardized bus virtual instrument architecture, combined with program-controlled instruments and special test instruments, to form a hybrid bus platform structure [15].Figure 2
The overall architecture of the automatic test system for wireless communication equipment.The automated test system adopts virtual instrument technology and the standard configuration of general-purpose computers and test instruments, adopts a dual-channel structure, and selects card-type and desktop instruments to form a fully automatic test system with simple connections and multiple test capabilities. The automatic test system for wireless communication equipment is composed of a control unit, a test device, a signal control unit, and auxiliary devices. Among them, the supporting devices include printers and switches, which perform printing and network connection test operations, respectively [16]. The block diagram of the system is shown in Figure 3.Figure 3
Block diagram of the hardware composition of the automatic test system.The system control unit is the main control computer in Figure3, which is the control center of the system architecture and is also responsible for the state control of the equipment under test. The test instrument realizes the parameter test of the device under test through the signal adaptation unit under the unified scheduling and control of the main control computer. Test instruments include the PXI instrument module and GPIB instruments, which are connected to the host computer through PXI and GPIB buses, respectively. Among them, the PXI interface test instruments are all installed in the chassis and receive control through the interface card inside the main control computer. The interface test instrument is connected to the USB port of the host computer through an interface converter.The signal adapter block is the test interface between the device under test and the test source. This involves the integrity of test system functions, test efficiency, and reliability of test data. The signal control module is basically composed of two parts: a signal control and monitoring circuit and a programmable control panel. It is mainly used to switch the test line to the automatic test sequence because multiple test devices are connected at the same time, the test signal and its excitation signal are distributed, and the line program control and receiving processing functions are changed. The switch matrix module is the core part of the realization and one of the key technologies to realize the automatic test. Before the automatic test system executes the test task, the system will check the operating status of the system itself by obtaining the value and status of each self-testing pilot in the system to ensure that the test system itself works normally [17].The software-defined radio platform’s upconversion processing is as close as possible to the antenna end, and the information is digitized as early as possible. By adopting a programmable and easily reconfigurable way, it realizes the modulation and demodulation of wireless information and the sending and receiving of data. In the actual application process, due to the performance limitations of the receiving antenna, ADC conversion chip, and baseband digital signal processing chip, the ideal software radio architecture concept is currently unable to realize engineering applications.As shown in Figure4, a mainstream software radio system mainly includes two parts: radio frequency and digital. Among them, the radio frequency part mainly completes the work of converting baseband signals into radio frequency signals, while the digital part mainly completes signal modulation/demodulation and encoding/decoding [18].Figure 4
SDR mainstream architecture.The thesis mainly designs a wireless communication platform to detect the status quo of students’ physique. The platform needs to support multiple current wireless communication standards and provide prototype verification. It is necessary to provide a multichannel radio frequency transceiver function with a wide working frequency band and cover common frequency bands. The data receiving channel performs downconversion and other processing functions on the received data and then transmits it to the baseband signal processing unit for specific analysis. The specific analysis is as follows: (1) The frequency range of commonly used wireless communication is below 6 GHz. (2) The platform needs to run an operating system to support the TCP/IP protocol stack and then process the video or audio data at the application layer. Therefore, the paper designs this platform to support Linux operating system. Running the Linux operating system generally requires the processor to have an MMU (memory management unit), and the main frequency is above 500 MHz. And considering the need to fully support the network layer and application layer, protocol stack, and software-defined MAC protocols, the paper design provides 1 GB of storage space. (3) According to the software and hardware division of the SoC architecture design, the entire physical layer and some MAC modules with high real-time requirements are implemented on FPGA. The 802.11a communication system used in the paper is based on the previous resource assessment according to the Xilinx-7 series FPGA architecture, and the entire design consumes about 100,000 LUTs [19].Based on the above demand analysis and combined with the actual situation of the project, the platform indicators are shown in Table1.Table 1
Overall platform indicators.
Frequency range300 MHz–6 GHzMaximum RF bandwidth20 MHzMaximum transmit power2 dBmSupply voltage24 VPeripheral interfaceEthernet portSupport operating systemLinuxMemory space3 GBCPU frequency1 GHzMemory management unitSupportThe most important part of the main control chip platform, the main function is the overall control of the system platform management and logic resources. It provides a series of signal processing resources to the system, provides the required digital interface between each chip, connects to a PC to realize data interaction, and can configure the system as a whole. There are mainly three kinds of SoC chips used in the market [20]. Compared with the parameters of the three chips in Table 2, this paper selects Zynq-7000 series SoC chips. The performance of the three chips is shown in Table 2.Table 2
Mainstream SoC chip comparison.
Chip typeAltera SoC FPGAZynq-7000SmarFusion2CPUARM cortex-A9ARM cortex-A9ARM cortex-M3Maximum processor frequency1 GHz1 GHz166 MHzLevel 1 cacheBoth data and instruction cache 32 KbBoth data and instruction cache 32 KbNo data cache 32 Kb indicating cacheLevel 2 cache515 Kb515 KbNot supportLogical resource470 Kb450 Kb150 KbKatagami RAM65 Kb256 Kb65 KbInterface clock530 Kb530 Kb330 KbThe power supply is the core content of hardware design, and the stability of the power supply determines the stability of the entire hardware system. Power requirements are shown in Table3.Table 3
Power requirement.
Serial numberDeviceDemand voltage1XC7Z0451.0 V/1.35 V/1.8 V/3.3 V2M16TW-1071.5 V3N25Q00AA133.5 V4AD93611.3 V/1.8 V/3.3 V5ATmega165 VIt can be seen from the table that the required voltages of the platform are 1.0 V, 1.5 V, 1.5 V, 3.5 V, and 5.0 V, respectively, and the power supply architecture is shown in Figure5.Figure 5
System power tree.The block diagram of the overall design of the wireless communication platform is shown in Figure6. Its main components include a digital signal processing module, radio frequency module, power supply module, USB interface module, DDR3 memory module, and Qspi Flash module [21].Figure 6
Overall design.The digital signal processing unit is mainly the SoC main control chip. Among them, the PS unit uses the rich resources of ARM to cooperate with the operating system for application management; the PL unit uses FPGA’s flexible programmable logic to build a more complex and reconfigurable baseband system. In terms of radio frequency units, the transmitter includes functions such as digital filtering, digital-to-analog conversion, analog filtering, signal upconversion, and signal amplification; the receiver includes functions such as a low-noise amplifier, signal downconversion, analog filtering, analog-to-digital conversion, and digital filtering.The wireless communication equipment designed in this paper is used to detect various physical indicators of college students in a certain school.Obesity or weight loss may be caused by the disease, and it can also cause disease and even affect the beauty of the human body. When we need to assess body type, BMI value is the standard of assessment, and BMI is expressed as (weight (kg)/height (m)2). The data is calculated based on weight and height and is a general indicator for evaluating appearance and health status [22]. Figure 7 shows the basic BMI situation of boys and girls in this school. The left picture shows the basic situation of boys, and the right picture shows the basic situation of girls.Figure 7
The basic situation of male and female BMI.In the normal range of BMI index, freshman girls accounted for 83%, sophomore girls accounted for 87%, junior girls accounted for 87%, and senior girls accounted for 85%; the normal range of freshman boys accounted for 71%, sophomore boys accounted for 73%, junior boys accounted for 71%, and senior boys accounted for 75%. This shows that more than 80% of the school’s students are in the normal range of fat and thinness, while only 70% of the boys are in the normal range. Their body shape is generally normal fat and thin and well-proportioned, but the proportion of girls with BMI in the normal range is higher than that of boys.Vital capacity refers to the maximum pressure exerted on the lungs during each ventilation and is an index for evaluating lung function. Various tissues of the human body need enough oxygen to function properly. The efficiency of lung function directly affects gas exchange, thereby affecting oxygen supply. Vital capacity is a more effective indicator for evaluating lung function. Poor lung function means that the body cannot absorb oxygen and exhaust gas normally. Insufficient oxygen intake can lead to poor mental health, slow exercise, and memory loss. It not only affects physical health but also affects mental health [23]. Figure 8 shows the basic situation of male and female vital capacity, the left picture shows the basic situation of boys, and the right picture shows the basic situation of girls.Figure 8
The basic situation of male and female vital capacity.It can be seen from Figure8 that, in the physical fitness spirometry test of the school, 8% of the boys who failed the freshman year and 11% of the boys were sophomore. This shows that about 90% of freshman and sophomore boys can meet the passing standard, and the long function of freshman and sophomore boys is generally better; junior boys accounted for 20%, and senior boys accounted for 16%, indicating that junior and senior boys have a lower pass rate, and junior and senior boys have poor overall lung function; the excellent lung capacity rate of freshman boys accounted for 17%, sophomore boys accounted for 20%, junior boys accounted for 5%, and senior boys accounted for 5%. This shows that not only is the vital capacity of freshman and sophomore boys higher than that of juniors and seniors but also the excellent rate of vital capacity of freshman and sophomore boys is much higher than that of juniors and seniors.Running can better promote gas exchange in the body, speed up blood circulation, and help increase muscle fibers and strengthen the myocardium. 50 meters and 800 (1000) meters are the functions of the cardiovascular system and respiratory system of the human body to complete a fixed distance of exercise within a specified time; the 50-meter race is a relatively common test index, which can reflect the function of the body’s central meridian system and the ability of muscle contraction [24]. Figure 9 shows the basic situation of 50 m boys and girls, the left picture shows the basic situation of boys, and the right picture shows the basic situation of girls.Figure 9
Basic situation of male and female 50 meters.The failure rate of boys at 50 meters is between 1% and 2%, and the failure rate for girls is between 5% and 15%. This shows that boys’ 50-meter passing rate is much higher than that of girls; the excellent rate of 50-meter boys is between 5% and 30%, and the excellent rate of girls is between 1% and 7%, which shows that the excellent rate of boys is much higher than that of girls. The essence of explosive power refers to the mutual coordination between different muscles. There is a gender difference in explosive power between girls and boys. Boys have strong muscles in their legs and are physiologically superior in explosive power. In terms of speed quality, girls’ speed quality is poorly developed. This has something to do with girls who rarely participate in fast and intense sports. Because boys often participate in short-term sports such as ball games, their explosive performance is clearly better than that of girls.Sitting forward flexion mainly reflects the flexibility of the human body, and the flexibility of human joints, joint ligaments, tendons and muscles, and other tissues are all flexible. Therefore, flexibility has improved physical properties and reduces the risk of injury, reduces muscle soreness, reduces back pain, and improves posture [25]. Figure 10 shows the basic situation of male and female students sitting forward bending, the left picture shows the basic situation of boys, and the right picture shows the basic situation of girls.Figure 10
The basic situation of male and female sitting forward bending.From Figure10, it can be seen that the freshman girls who failed the sitting position accounted for 3%, the sophomore girls accounted for 2%, the junior girls accounted for 2.6%, and the senior girls accounted for 4.8%. The first-year boys who failed the sitting position accounted for 6%, the second-year boys accounted for 3.4%, the third-year boys accounted for 9.2%, and the fourth-year boys accounted for 9.3%, indicating that the flexibility of girls is better than that of boys. In terms of muscle mass, male muscles are stronger than female muscles, and muscle fibers are thicker. The ratio of male to female total muscle is 5 : 3, while male muscle has less water and more protein and sugar, muscle fiber grows and thickens, and flexibility is worse [26].The study is designed by identifying the important factors that affect physical health, and several important influencing factors are derived: genetic factors, school factors, family factors, physical exercise, diet, and rest.


## 4. Discussion

Genetic factors are congenital factors that affect physical health, and they are also the initial factors that determine physical health. If the parents’ healthy genes are good, the child’s physique is more likely to be better. If the parent’s healthy genes are poor, the child’s physique is more likely to be poor; genetic factors play a prominent role in morphological indicators, especially height and genetic factors are closely related. Due to the traditional way of life, parents get married at close range, and genetic factors will show regional differences. (1) The height of the students in the south has increased slowly, while the students in the north have increased in weight. (2) The vital capacity of college students in the north and south has dropped significantly. (3) Among the four physical qualities of college students in the south and north, the most prominent decline is endurance and flexibility, and the decline is more pronounced for college students in the south. (4) There are significant differences in the physique status of college students from the south and north.Family factors are an important factor affecting physical health, mainly from the main factors such as family education methods, family atmosphere, and parental health behaviors. Different family education methods lead to different children’s physical health. For example, children who grow up in a doting family will have irregular eating and resting habits, resulting in unqualified morphological indicators; a good family atmosphere makes students more inclined to participate in various sports activities and develop good living habits; parents’ healthy behavior is an intuitive factor that affects children’s physical health. Parents’ participation in exercise will affect college students’ physical exercise behavior, and there is a positive correlation between the two. Quantitative and qualitative changes are a stage of development, and the development of everything is achieved through quantitative and qualitative changes. Quantitative change is the premise of qualitative change, and qualitative change is the result of quantitative change. Therefore, it is difficult to improve the level of physical fitness when there are few physical education classes in the school. To some extent, a healthy school atmosphere is related to the intensity of propaganda, and the intensity of propaganda may determine the importance of the concept of the physical health of students. The propaganda is powerful, and it guides students to develop healthy lifestyle and exercise habits, which also affects the physical fitness, cognition, and health awareness of surrounding students [27]. If the school sports facilities are mostly outdated and aging, there is a lack of maintenance personnel. The basket of the outdoor basketball court is drooping, the backboard is fragile, and the court is uneven; the plastic track of the track and field has poor slip resistance; the surface of the artificial grass football field is made of plastic particles and has no abrasion resistance. The hidden safety hazards in sports venues will hinder students from exercising and gradually lose their interest in sports. Among the factors that affect physical health, physical exercise has a greater degree of influence. Scientific physical exercise can enhance the body’s system functions, improve the body’s new metabolism, and achieve the purpose of improving physical health. Table 4 shows the time for students to participate in physical exercise each time.Table 4
The amount of time the student participates in physical exercise time.
Grade<30 min (%)30–60 min (%)60–90 min (%)90–120 min (%)Freshman1658197Sophomore15551515Junior3640168Senior year414685Life behaviors are the practical activities that people carry out in various fields of life under the control of certain social concepts. Among them, diet, work, and rest have a greater impact on physical health. Irregular diet and unbalanced nutritional intake have a high incidence of diseases and endanger the physical health of the human body. Unscientific dietary nutrition is an important reason for the decline in the physical health of college students. Irregular work and rest people who often stay up late can easily lead to weight imbalance. Without adequate sleep, the energy consumed by the human body cannot be fully replenished, and human body function cannot be repaired, which in turn affects the metabolism and causes short-term irreparable damage to the health of the body. Therefore, diet and rest are factors that can not be ignored that affect the physical health of college students.The functional requirements of the various systems of the wireless communication platform are as follows: the equipment monitoring system requires monitoring the operation of the entire network and the basic information of equipment such as wireless controllers and wireless access points. Service running status and performance status are collected, and the main performance information of the equipment is counted so that users can more accurately and clearly explore the network running status and carry out scientific management. The topology management system mainly provides platform topology monitoring functions, displaying the network topology and the cascading relationship of equipment. The event management system needs to accurately reflect the alarm information that appears on the network, notify the network management platform in time when the threshold is violated, and warn the administrator of abnormal conditions through various preconfigured methods to determine the system failure alarm information in a timely manner. The configuration management system provides the configuration of the wireless controller and wireless access point in the wireless communication network on the network management platform, which facilitates the remote configuration management of the administrator. User management mainly completes the assignment and authority management functions of platform administrators.


## 5. Conclusion

The health of students is related to the overall competitiveness of a region or even a country. Improving and enhancing the physical fitness of students is conducive to the economic and social development of the country. In addition, the physical health of students not only is related to a country’s talent pool but also can generally reflect the law of the student population and reflect the changes in the economy and society over time. This paper takes bus technology, measurement and control technology, and network technology as the link, based on an open and standardized bus virtual instrument architecture, combined with program-controlled instruments and special test instruments, to form a hybrid bus platform structure. This paper starts a preliminary forecasting study, and in view of the limited data sources and academic level, there are unavoidable omissions in the study. The analysis of the status quo analysis stage is not thorough enough, only showing the changes of relevant indicators, lacking internal judgment analysis; during the theoretical research stage, the grasp of the theory is not deep enough. The transmitting power of the wireless communication platform designed in this paper is 1 dBm. In practical applications, more transmission power is often required, and the following research can be carried out around the platform’s peripheral power amplifier equipment.



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*Source: 3305777-2022-03-11.xml*