# The Industrial Product Design Service System Based on the Sustainable Development of the Internet of Things

Authors: Linjing Guo; Bohong Chen
Journal: Mobile Information Systems
 (2022)

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## Abstract

The study aims at the sustainable development of the Internet of Things. This paper studies the industrial product design service system and understands the relevant knowledge and theories of the industrial product design service system on the basis of literature data, and then the sustainable development of Internet of Things is set as the goal, and the industrial product design service system is designed and tested. The industrial revolution in the 18th century brought about technological innovation and economic take-off in today’s society, which completely changed people’s lifestyles and was also accompanied by a series of environmental, social, and economic problems. Abnormal weather, lack of resources, and serious waste are becoming more and more obvious. The study problem that needs to be solved urgently is the contradiction between the environment and the economy. As a result, many companies, organizations, and individuals gradually began to find effective ways and means to solve this problem, and the concept of sustainable design came into being. The study test results show that the overall system evaluation designed in this paper is relatively good: 67% of the system function evaluation scores above 3, and 66% of the system interface evaluation scores above 3 points.


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## Body

## 1. Introduction

The manufacturing industry is the backbone of a powerful country, and the core of the development of the manufacturing industry is the deep integration of highly developed technologies and services [1, 2]. As the core industry of “Made in China,” industrial design has the characteristics of specialization, innovation, and service, which makes it not only coexist and prosper with the construction industry but also gradually penetrate the service industry [3, 4]. With the gradual deepening of information fusion, the degree of cross-dependence between product design and the service industry will gradually increase and the difference between the two will gradually disappear [5, 6]. The creation of additional services for consumers through design will maximize the practicability of user-product design, and the product design service system will gradually form [7, 8].Regarding the research of product design service systems, some researchers say that the development of most business platforms (especially domestic ones) is limited to the development and invocation of internal business resources. However, as the market becomes more and more globalized, the initially relatively stable market has gradually become a vibrant and unstable market, and products have also begun to become diversified, accelerating intensive transformation and upgrading, so the closed internal business platform has not met the complex needs of customers for integrated applications. Therefore, it is necessary to extend the company’s internal product platform to the outside of the company to improve the products between companies. By sharing technical exchanges with platform resources, many companies can collaborate on product design and extend their internal product platforms to the outside world. However, in today’s manufacturing environment, there are information islands or resources within and between companies. Sharing and corporate cooperation are inseparable [9]. Some researchers believe that design innovation is the main driving force behind innovation. Design is different from art. Art is an interpretation of the creator’s inner subjective perception, and planning is to create objective value for people and society. Therefore, as a targeted creative activity, more and more countries have begun to recognize design innovation. It is regarded as an important part of the national innovation strategy. Design has become a new innovation model. Design innovation is not only market-driven and technological innovation but also a new development plan for society, reflecting the new development concept [10]. In summary, there are many research results for product design services, but there are few research studies on the introduction of Internet technology into product design services.Manufacturing is the backbone of every great country, and the deep integration of advanced technology and services is key to its success. While some research on product design services has been done recently, few have looked at how Internet technologies might be used to enhance product design services. As information fusion deepens, the degree of cross-dependence between product design and the service sector will increasingly expand.This paper studies the contribution of the industrial product design service system to the goal of the sustainable development of the Internet of Things. Analyzes the basic attributes of the product-service system and sustainable system design methods on the basis of literature data, and then the sustainable development of the Internet of Things design and tests the target industrial product design service system and draws relevant conclusions through the test results.


## 2. Research on Industrial Product Design Service Systems

### 2.1. Basic Attributes of Product-Service Systems

The so-called basic characteristics are the analysis and reflection of the essential characteristics of the theory. Analyzing the key functions of product-service system design is a preliminary understanding of the theoretical framework and its development framework, and it helps to understand theories and teaching practices. In particular, understanding the “unique feasibility requirements” of the system can make the system have the potential to “promote sustainable development”. By clarifying the separation and coordination of the system’s products and services, the two can actually be balanced. The relationship between people and the actual requirements of social tolerance can be more focused on social diffusion in the design and implementation process.


#### 2.1.1. Product Service System “Environmental Protection Requirements”

Since the establishment of the “Product-Service System,” one of its important characteristics has been sustainability. From this perspective, it seems unnecessary to add the word “sustainable” specifically. However, in decades of research and practice of “product and service systems,” many systems have deviated from their original intentions because many participants ignored their “sustainable” key functions and focused on their “service” functions. The result is a seemingly incorrect but very reasonable statement that “not all product and service system designs are feasible.” In this article, the word “sustainable” will be added before the “product-service system,” which is necessary and helpless. But obviously, in the process of theoretical innovation, the situation of “sustainable development” has not changed. The research on the product-service system stems from concerns about the European development environment. After gradually recognizing the “original sin” of “excessive consumption” product design, scientists from many countries, including key faculties and departments such as the Institute of Sustainable Design and Product Innovation of the Politecnico di Milano, began to cooperate on related topics. By further arranging user-centered “service design” in the field of product design, it established a new theory of “product-service system design” with “sustainable development” as the main feature and the ultimate goal, which was created by myself. In the past two decades, through continuous project research, training promotion, and landing practice, a consensus and theoretical basis product-service system research system has been formed [11].


#### 2.1.2. The Actual Requirements of “Social Inclusion”

The social integration of innovation at all levels is the core of the transfer of innovation to the social technology system. Most ideas fail to make the transfer from professional to institutional level due to differences in maturity and convenience. In reality, specialized competition eliminates more, restoring many to their former levels. Most inventions must constantly spread their impact to the most competitive areas and institutional levels. While it is important to grasp the theoretical components of the transfer process, a comprehensive understanding of the process needs a good awareness of crucial functions such as social integration and innovation.


### 2.2. Sustainable System Design Method

Table1 shows the Sustainable System Design (MSDS) approach, also known as the modular approach to designing sustainable systems. This is a process of development through a lot of education and guiding the entire system of innovation in a sustainable way. The method consists of multiple modules, and each module contains multiple steps, processes, and subprocesses, thereby forming a flexible and variable structure. It can be customized for different projects to meet the requirements of different design teams and can be used for complex backgrounds and design conditions [12]. The main areas are as follows: Process stage: According to the specific requirements of different projects, choose different stages for implementation. It can be any stage or a specific stage of the unit. Use tools: Each stage of this section contains specific tools, allowing the designer to choose the right tool according to the design requirements.Table 1
Sustainable system design method.
Stage/processTargetStrategic analysisAccess to information to promote the creation of sustainable system ideas and scenarios for sustainable system innovationExplore opportunitiesGenerate a string of promising sustainable system ideas and scenarios for sustainable designSystem concept designDefine and design one or more potential system conceptsSystem designDevelop a sustainable system concept that influences the prospects from the specific perspective of the necessary applicationCommunicationGenerate documents for external communication of the characteristics of the solutionThree aspects of sustainable development: This method allows designers to carefully consider the three aspects of sustainable development, environment, social ethics, and economics, and choose the right one to start with. Integration with other tools and activities: This method allows designers to integrate design tools outside the toolbox, and designers can also modify or add tools based on the actual status of the project.The basic structure of the sustainable system design method includes the following five stages:(1)
Strategic analysis: The purpose of this stage is to obtain the information needed to help form a sustainable system innovation view. This has two goals. One is to understand the status quo, learn more about project applicants, and understand their socioeconomic background, including the formation of this background (social economy, technology, and cultural macroeconomics). On the other hand, information needs to be processed according to guiding the design process to obtain promising solutions.(2)
Discover opportunities: The goal of the second stage is to create a possible development direction for a promising system. In order to realize this idea, the designer needs to communicate the ideas of all participants. Specifically, it contains a “checklist” of strategic feasibility from a development perspective, that is, sustainability-oriented ideas and innovative ideas, using the information collected and processed in the previous period to outline the sustainable design plan (SDOS). This kind of thoughtful scenario model is the basis for the development and implementation of future sustainable system innovation.(3)
Design system concept: Starting from the detailed ideas and ideas so far, the goal of this stage is to select the most promising ideas according to the specific participation process. Participants can express their opinions during this process and divide the designer’s ideas into different groups. Each group represents a prototype of system thinking. These creative teams will be further improved to determine product and service configurations and related production and distribution participant systems and to evaluate the potential for environmental, social, ethical, and economic coordination.(4)
Planning and implementation: The task at this stage puts forward detailed requirements for system thinking, guides specific system design, proper system implementation, environmental, social ethics, economic evaluation, and other specific implementation tasks, and conducts appropriate design evaluation.(5)
Communication: The main task of the “communication” stage is to talk and communicate with the outside world, which can be reused in other stages. The focus of the discussion was mainly on the general characteristics of the design plan and the sustainability issues of the previous stages. The previous stage uses some design and visualization solutions to support the communication at this stage. The main goal of this stage is to provide documentation showing the design priority of sustainable solutions, the general characteristics of the product-service system, the sustainable characteristics of the product-service system, and suitable equipment.


## 2.1. Basic Attributes of Product-Service Systems

The so-called basic characteristics are the analysis and reflection of the essential characteristics of the theory. Analyzing the key functions of product-service system design is a preliminary understanding of the theoretical framework and its development framework, and it helps to understand theories and teaching practices. In particular, understanding the “unique feasibility requirements” of the system can make the system have the potential to “promote sustainable development”. By clarifying the separation and coordination of the system’s products and services, the two can actually be balanced. The relationship between people and the actual requirements of social tolerance can be more focused on social diffusion in the design and implementation process.


### 2.1.1. Product Service System “Environmental Protection Requirements”

Since the establishment of the “Product-Service System,” one of its important characteristics has been sustainability. From this perspective, it seems unnecessary to add the word “sustainable” specifically. However, in decades of research and practice of “product and service systems,” many systems have deviated from their original intentions because many participants ignored their “sustainable” key functions and focused on their “service” functions. The result is a seemingly incorrect but very reasonable statement that “not all product and service system designs are feasible.” In this article, the word “sustainable” will be added before the “product-service system,” which is necessary and helpless. But obviously, in the process of theoretical innovation, the situation of “sustainable development” has not changed. The research on the product-service system stems from concerns about the European development environment. After gradually recognizing the “original sin” of “excessive consumption” product design, scientists from many countries, including key faculties and departments such as the Institute of Sustainable Design and Product Innovation of the Politecnico di Milano, began to cooperate on related topics. By further arranging user-centered “service design” in the field of product design, it established a new theory of “product-service system design” with “sustainable development” as the main feature and the ultimate goal, which was created by myself. In the past two decades, through continuous project research, training promotion, and landing practice, a consensus and theoretical basis product-service system research system has been formed [11].


### 2.1.2. The Actual Requirements of “Social Inclusion”

The social integration of innovation at all levels is the core of the transfer of innovation to the social technology system. Most ideas fail to make the transfer from professional to institutional level due to differences in maturity and convenience. In reality, specialized competition eliminates more, restoring many to their former levels. Most inventions must constantly spread their impact to the most competitive areas and institutional levels. While it is important to grasp the theoretical components of the transfer process, a comprehensive understanding of the process needs a good awareness of crucial functions such as social integration and innovation.


## 2.1.1. Product Service System “Environmental Protection Requirements”

Since the establishment of the “Product-Service System,” one of its important characteristics has been sustainability. From this perspective, it seems unnecessary to add the word “sustainable” specifically. However, in decades of research and practice of “product and service systems,” many systems have deviated from their original intentions because many participants ignored their “sustainable” key functions and focused on their “service” functions. The result is a seemingly incorrect but very reasonable statement that “not all product and service system designs are feasible.” In this article, the word “sustainable” will be added before the “product-service system,” which is necessary and helpless. But obviously, in the process of theoretical innovation, the situation of “sustainable development” has not changed. The research on the product-service system stems from concerns about the European development environment. After gradually recognizing the “original sin” of “excessive consumption” product design, scientists from many countries, including key faculties and departments such as the Institute of Sustainable Design and Product Innovation of the Politecnico di Milano, began to cooperate on related topics. By further arranging user-centered “service design” in the field of product design, it established a new theory of “product-service system design” with “sustainable development” as the main feature and the ultimate goal, which was created by myself. In the past two decades, through continuous project research, training promotion, and landing practice, a consensus and theoretical basis product-service system research system has been formed [11].


## 2.1.2. The Actual Requirements of “Social Inclusion”

The social integration of innovation at all levels is the core of the transfer of innovation to the social technology system. Most ideas fail to make the transfer from professional to institutional level due to differences in maturity and convenience. In reality, specialized competition eliminates more, restoring many to their former levels. Most inventions must constantly spread their impact to the most competitive areas and institutional levels. While it is important to grasp the theoretical components of the transfer process, a comprehensive understanding of the process needs a good awareness of crucial functions such as social integration and innovation.


## 2.2. Sustainable System Design Method

Table1 shows the Sustainable System Design (MSDS) approach, also known as the modular approach to designing sustainable systems. This is a process of development through a lot of education and guiding the entire system of innovation in a sustainable way. The method consists of multiple modules, and each module contains multiple steps, processes, and subprocesses, thereby forming a flexible and variable structure. It can be customized for different projects to meet the requirements of different design teams and can be used for complex backgrounds and design conditions [12]. The main areas are as follows: Process stage: According to the specific requirements of different projects, choose different stages for implementation. It can be any stage or a specific stage of the unit. Use tools: Each stage of this section contains specific tools, allowing the designer to choose the right tool according to the design requirements.Table 1
Sustainable system design method.
Stage/processTargetStrategic analysisAccess to information to promote the creation of sustainable system ideas and scenarios for sustainable system innovationExplore opportunitiesGenerate a string of promising sustainable system ideas and scenarios for sustainable designSystem concept designDefine and design one or more potential system conceptsSystem designDevelop a sustainable system concept that influences the prospects from the specific perspective of the necessary applicationCommunicationGenerate documents for external communication of the characteristics of the solutionThree aspects of sustainable development: This method allows designers to carefully consider the three aspects of sustainable development, environment, social ethics, and economics, and choose the right one to start with. Integration with other tools and activities: This method allows designers to integrate design tools outside the toolbox, and designers can also modify or add tools based on the actual status of the project.The basic structure of the sustainable system design method includes the following five stages:(1)
Strategic analysis: The purpose of this stage is to obtain the information needed to help form a sustainable system innovation view. This has two goals. One is to understand the status quo, learn more about project applicants, and understand their socioeconomic background, including the formation of this background (social economy, technology, and cultural macroeconomics). On the other hand, information needs to be processed according to guiding the design process to obtain promising solutions.(2)
Discover opportunities: The goal of the second stage is to create a possible development direction for a promising system. In order to realize this idea, the designer needs to communicate the ideas of all participants. Specifically, it contains a “checklist” of strategic feasibility from a development perspective, that is, sustainability-oriented ideas and innovative ideas, using the information collected and processed in the previous period to outline the sustainable design plan (SDOS). This kind of thoughtful scenario model is the basis for the development and implementation of future sustainable system innovation.(3)
Design system concept: Starting from the detailed ideas and ideas so far, the goal of this stage is to select the most promising ideas according to the specific participation process. Participants can express their opinions during this process and divide the designer’s ideas into different groups. Each group represents a prototype of system thinking. These creative teams will be further improved to determine product and service configurations and related production and distribution participant systems and to evaluate the potential for environmental, social, ethical, and economic coordination.(4)
Planning and implementation: The task at this stage puts forward detailed requirements for system thinking, guides specific system design, proper system implementation, environmental, social ethics, economic evaluation, and other specific implementation tasks, and conducts appropriate design evaluation.(5)
Communication: The main task of the “communication” stage is to talk and communicate with the outside world, which can be reused in other stages. The focus of the discussion was mainly on the general characteristics of the design plan and the sustainability issues of the previous stages. The previous stage uses some design and visualization solutions to support the communication at this stage. The main goal of this stage is to provide documentation showing the design priority of sustainable solutions, the general characteristics of the product-service system, the sustainable characteristics of the product-service system, and suitable equipment.


## 3. Industrial Product Design Service System Design Based on the Sustainable Development of the Internet of Things

### 3.1. Composition of Industrial Product Design Service System

As a complete system, the product-service system is mainly composed of users, products, service providers, services, platforms, and corresponding information (see Figure1). Each element sounds like a combination of products and services, and in the system, the function of that role is also undergoing qualitative changes. First of all, for users, it is not just the purchaser or owner of the product. Any stakeholder who has the right (or temporary use) to use the product is also a product user. Of course, there are also some service providers. For example, the driver of Didi Dache is a taxi service provider, but because he is a user of the service system or a user of car products, and he may also enter the user category, but their consumption methods are completely different. The car products in the service system can either be owned by a certain user or be used as a product component of the service system and only provide application permissions. Regardless of whether the user is really the owner of the car product itself, although the user can enjoy the public services provided by the service provider that depends on the product, these public services directly affect the user’s overall evaluation of the car product-service system. These public services directly affect users’ overall evaluation of the product-service system or are directly linked to the product application. In addition to goods and services, this article also includes systematically integrated information content, but its importance is often overlooked. However, as an important connection node of the entire information system, the effective transmission of information content and good information communication directly affect the relationship between services and commodities, as well as services and users. For example, after purchasing a C notebook, the usage information is published and recorded on the system platform, and the maintenance messages used are sent to the system service platform. The most direct impact is that all the user’s usage information is recorded on the user ID, and the purchase information through the App Store directly affects the user’s use of goods and services.Figure 1
Industrial product design service system composition.


### 3.2. Analysis of Sustainable Product Composition

The concept of sustainability runs through the entire life cycle of a product, and the product is the core of the entire system. To realize the feasibility of the product-service system and extend the service life of the entire system, enterprises must implement environmentally friendly, innovative product designs. Sustainable product design covers seven aspects of information, such as structure, materials, and recycling, as shown in Figure2.Figure 2
Sustainable product composition analysis framework diagram.


### 3.3. Analysis of Users’ Sustainable Needs

The products and services are purchased and utilized by the users, who are also the main personnel that realize the functionality and practicability of products. Whether a sustainable product-service system can be successfully developed and the usefulness of the service can be realized depends entirely on whether the design can meet the deep-seated needs of users. Before starting to design a product-service system, it is particularly important to analyze user needs. Designers can start by analyzing user needs, such as function, quality, performance, structure, materials, craftsmanship, service, and ergonomics. The system product overview is shown in Figure3. Understanding the in-depth needs of end users can help improve the design and increase product satisfaction.Figure 3
User’s sustainable demand analysis framework diagram.


### 3.4. Application of the Internet of Things

The prerequisite for the development of ecological design of products and service systems in the “Internet +” era is the widespread use of Internet-based infrastructure. As far as the product-service system is concerned, the infrastructure is the product, and the interconnection of all things brought about by microelectronics technology is the premise. With the popularization of smart products, products will be able to connect to the Internet, and with the widespread application of MEMS and other sensors, smart hardware will be able to recognize the world. The sensations of temperature, humidity, pressure, and movement are the “facial sensations” of smart devices that recognize the real world.The Internet enables a wider range of data flows to service providers and makes it easier to understand user needs. Therefore, the service will be constantly updated according to these individual needs. In the product and service ecosystem of the Internet of Everything brought about by Internet+, services use widely used smart products to more efficiently collect user behavior and demand information for cloud computing and big data to improve services. It is preventive and provides users with accurate and intelligent services. In this article, a flexible service system is gradually introducing data demand analysis. The so-called flexible service means active communication needs. Service providers use the “brain service network” based on the “brain cloud” with self-learning, self-management, and self-healing capabilities, determine the needs. This flexible service system is the ideal state of the intelligent Internet of Things and the inevitable state of the ecological product-service system.


### 3.5. Data-Driven Demand Analysis

Use the K-means algorithm to perform cluster analysis on the product structure data of the industrial cluster, and find that your products are similar in structure to other products. Combined with product price data, you can analyze whether the prices of these products are similar. If the structure of the product is relatively similar and the price is relatively similar, then there is a potential competitive relationship between your own product and the products of these companies, and there is a potential competitive relationship with the products of other companies, which means that it may not be relevant. There is a potential competitive relationship between the products of these individuals and the products of these companies, avoiding blind competition between companies, and promoting the healthy development of the entire industrial chain and industrial clusters.Based on previous research, this task uses a combination of the DB_Idex standard and SSE (the sum of square errors) to determine the number of K.Intraclass dispersion and interclass grouping are usually used to determine the efficiency of grouping. The DB_Idex standard uses dispersion for categories and class categories. As shown in formula1(1)DB=ik∑i=1kRi,in,(2)Ri=maxSi+Sjdih,where k is the number of categories and Si is the average dispersion within the category.


## 3.1. Composition of Industrial Product Design Service System

As a complete system, the product-service system is mainly composed of users, products, service providers, services, platforms, and corresponding information (see Figure1). Each element sounds like a combination of products and services, and in the system, the function of that role is also undergoing qualitative changes. First of all, for users, it is not just the purchaser or owner of the product. Any stakeholder who has the right (or temporary use) to use the product is also a product user. Of course, there are also some service providers. For example, the driver of Didi Dache is a taxi service provider, but because he is a user of the service system or a user of car products, and he may also enter the user category, but their consumption methods are completely different. The car products in the service system can either be owned by a certain user or be used as a product component of the service system and only provide application permissions. Regardless of whether the user is really the owner of the car product itself, although the user can enjoy the public services provided by the service provider that depends on the product, these public services directly affect the user’s overall evaluation of the car product-service system. These public services directly affect users’ overall evaluation of the product-service system or are directly linked to the product application. In addition to goods and services, this article also includes systematically integrated information content, but its importance is often overlooked. However, as an important connection node of the entire information system, the effective transmission of information content and good information communication directly affect the relationship between services and commodities, as well as services and users. For example, after purchasing a C notebook, the usage information is published and recorded on the system platform, and the maintenance messages used are sent to the system service platform. The most direct impact is that all the user’s usage information is recorded on the user ID, and the purchase information through the App Store directly affects the user’s use of goods and services.Figure 1
Industrial product design service system composition.


## 3.2. Analysis of Sustainable Product Composition

The concept of sustainability runs through the entire life cycle of a product, and the product is the core of the entire system. To realize the feasibility of the product-service system and extend the service life of the entire system, enterprises must implement environmentally friendly, innovative product designs. Sustainable product design covers seven aspects of information, such as structure, materials, and recycling, as shown in Figure2.Figure 2
Sustainable product composition analysis framework diagram.


## 3.3. Analysis of Users’ Sustainable Needs

The products and services are purchased and utilized by the users, who are also the main personnel that realize the functionality and practicability of products. Whether a sustainable product-service system can be successfully developed and the usefulness of the service can be realized depends entirely on whether the design can meet the deep-seated needs of users. Before starting to design a product-service system, it is particularly important to analyze user needs. Designers can start by analyzing user needs, such as function, quality, performance, structure, materials, craftsmanship, service, and ergonomics. The system product overview is shown in Figure3. Understanding the in-depth needs of end users can help improve the design and increase product satisfaction.Figure 3
User’s sustainable demand analysis framework diagram.


## 3.4. Application of the Internet of Things

The prerequisite for the development of ecological design of products and service systems in the “Internet +” era is the widespread use of Internet-based infrastructure. As far as the product-service system is concerned, the infrastructure is the product, and the interconnection of all things brought about by microelectronics technology is the premise. With the popularization of smart products, products will be able to connect to the Internet, and with the widespread application of MEMS and other sensors, smart hardware will be able to recognize the world. The sensations of temperature, humidity, pressure, and movement are the “facial sensations” of smart devices that recognize the real world.The Internet enables a wider range of data flows to service providers and makes it easier to understand user needs. Therefore, the service will be constantly updated according to these individual needs. In the product and service ecosystem of the Internet of Everything brought about by Internet+, services use widely used smart products to more efficiently collect user behavior and demand information for cloud computing and big data to improve services. It is preventive and provides users with accurate and intelligent services. In this article, a flexible service system is gradually introducing data demand analysis. The so-called flexible service means active communication needs. Service providers use the “brain service network” based on the “brain cloud” with self-learning, self-management, and self-healing capabilities, determine the needs. This flexible service system is the ideal state of the intelligent Internet of Things and the inevitable state of the ecological product-service system.


## 3.5. Data-Driven Demand Analysis

Use the K-means algorithm to perform cluster analysis on the product structure data of the industrial cluster, and find that your products are similar in structure to other products. Combined with product price data, you can analyze whether the prices of these products are similar. If the structure of the product is relatively similar and the price is relatively similar, then there is a potential competitive relationship between your own product and the products of these companies, and there is a potential competitive relationship with the products of other companies, which means that it may not be relevant. There is a potential competitive relationship between the products of these individuals and the products of these companies, avoiding blind competition between companies, and promoting the healthy development of the entire industrial chain and industrial clusters.Based on previous research, this task uses a combination of the DB_Idex standard and SSE (the sum of square errors) to determine the number of K.Intraclass dispersion and interclass grouping are usually used to determine the efficiency of grouping. The DB_Idex standard uses dispersion for categories and class categories. As shown in formula1(1)DB=ik∑i=1kRi,in,(2)Ri=maxSi+Sjdih,where k is the number of categories and Si is the average dispersion within the category.


## 4. System Test

### 4.1. System Response Time Test

In this paper, two industrial product design service system transactions are selected to control the response time. Send the user name and password to log in to the transaction and query all transactions in the system. The experiment generated 10 different test scenarios, which depended on the same test scenario but set a different number of concurrent virtual users (range 2–20). In this experiment, in addition to the server, only one computer is used as a virtual user controller and a host for running virtual users. Here, the host running the virtual user is the computer running the virtual user script to simulate the behavior of the actual user. For each script run, add the average time required for all virtual user query functions in the script. The experimental results are shown in Table2.Table 2
System response time test result.
1234520.420.440.450.510.5240.560.610.620.600.6160.710.701.400.740.7680.900.910.920.930.95101.211.081.071.181.21121.121.231.261.251.37141.341.411.521.541.55Figure4 shows that the response time of the system in this paper increases with the increase in the number of users, but the increasing trend is relatively slow, which meets the design requirements of the system.Figure 4
System response time test result.


### 4.2. Evaluation of the Use of the System

Conduct a questionnaire survey on the use of the system designed in this article. First, select students majoring in industrial design in the city’s colleges and universities to use the system. After the use is completed, a questionnaire survey is issued, and then the questionnaire data are sorted to obtain information about the system. The evaluation data is shown in Table3:Table 3
Evaluation results of the use of the system.
System functions (%)System interface (%)System operation (%)1121011221242333334334343233It can be seen from Figure5 that the overall system evaluation in this article is good, with 67% of the system function evaluation scores above 3, and 66% of the system interface evaluation scores above 3 points.Figure 5
Evaluation results of the use of the system.


## 4.1. System Response Time Test

In this paper, two industrial product design service system transactions are selected to control the response time. Send the user name and password to log in to the transaction and query all transactions in the system. The experiment generated 10 different test scenarios, which depended on the same test scenario but set a different number of concurrent virtual users (range 2–20). In this experiment, in addition to the server, only one computer is used as a virtual user controller and a host for running virtual users. Here, the host running the virtual user is the computer running the virtual user script to simulate the behavior of the actual user. For each script run, add the average time required for all virtual user query functions in the script. The experimental results are shown in Table2.Table 2
System response time test result.
1234520.420.440.450.510.5240.560.610.620.600.6160.710.701.400.740.7680.900.910.920.930.95101.211.081.071.181.21121.121.231.261.251.37141.341.411.521.541.55Figure4 shows that the response time of the system in this paper increases with the increase in the number of users, but the increasing trend is relatively slow, which meets the design requirements of the system.Figure 4
System response time test result.


## 4.2. Evaluation of the Use of the System

Conduct a questionnaire survey on the use of the system designed in this article. First, select students majoring in industrial design in the city’s colleges and universities to use the system. After the use is completed, a questionnaire survey is issued, and then the questionnaire data are sorted to obtain information about the system. The evaluation data is shown in Table3:Table 3
Evaluation results of the use of the system.
System functions (%)System interface (%)System operation (%)1121011221242333334334343233It can be seen from Figure5 that the overall system evaluation in this article is good, with 67% of the system function evaluation scores above 3, and 66% of the system interface evaluation scores above 3 points.Figure 5
Evaluation results of the use of the system.


## 5. Conclusion

The purpose of this paper is to investigate the industrial product design service system with the goal of promoting the sustainablity of the Internet of Things. Following an analysis of related theories, the industrial product design service system is designed in accordance with the sustainable development of the Internet of Things, and the system is put into operation. The detection results show that the response time of the system increases with the increase in the number of users, but the increasing trend is relatively slow, which meets the design requirements of the system.



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*Source: 4623301-2022-03-16.xml*