Internet-based campus second-hand article transaction system and method

Abstract

The invention provides a campus second-hand article transaction system and method based on the Internet, and provides online and offline comprehensive services for second-hand transaction related parties including students, schools, platforms and enterprises by constructing an online and offline combined campus second-hand transaction website. According to the campus second-hand article management system and method, the requirements of different users are met through flexible and diversified transaction modes, the transaction safety and convenience are improved, management and cyclic utilization of campus second-hand articles are achieved, and corresponding economic values and social values are created. For classified transaction and management of second-hand articles in colleges and universities, carbon emission reduction quantity is quantified by introducing an environmental contribution visualization function, and datamation and visualization of user transaction are realized; resource saving and environment protection are promoted, and second-hand article resource utilization of waste emission reduction and carbon dioxide emission reduction is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of resource recycling, and particularly relates to an Internet-based campus second-hand item trading system and method. Background Art

[0002] After people purchase new items in life, the original items are transformed into idle resources. The resale of idle life items forms the second-hand item trading market. Second-hand item trading is one of the most effective ways to save resources and practice green and low-carbon consumption.

[0003] Currently, the second-hand item trading market covers a wide range of commodity categories. The second-hand item trading on campus is particularly active. Typical second-hand items include textbooks and clothes, etc. It is necessary to establish an efficient recycling and utilization system and improve the recycling network for waste consumer goods. Traditional offline second-hand markets and flea markets, due to inconvenient information and short trading time limits, can only serve as auxiliary forms of second-hand item trading; while existing commercial network second-hand item trading platforms, due to the wide distribution of buyers and sellers and the lack of transparency in their identities, long commodity transportation time, no after-sales guarantee, and inability to conduct transactions of low-value items, cannot meet the needs of college students for second-hand item trading on campus. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an Internet-based campus second-hand item trading system and method for recycling campus second-hand items.

[0005] The technical solution adopted by the present invention to solve the above technical problem is: an Internet-based campus second-hand item trading system, including a user management module, a trading main module, and an offline reservation module; The user management module is used to set corresponding function permissions for different user types; The user types include users, platforms, schools, and enterprises; The permissions of users include issuing, processing, viewing, and evaluating online orders, submitting and editing offline transaction applications, and also include information sending and receiving permissions with the platform and other users; The permissions of the platform include viewing, auditing, and editing online orders and offline transaction applications submitted by users, managing advertising applications of enterprises, managing information publicly disclosed by users, schools, and enterprises, and also include information sending and receiving permissions with users, schools, and enterprises; The permissions of schools include viewing and managing online orders and offline transaction applications of users, counting the behaviors of users and sending reward and punishment measures to the platform, and also include information sending and receiving permissions with the platform and enterprises; The permissions of enterprises include submitting advertising applications to the platform and making investments in the platform, and also include information sending and receiving permissions with the platform and schools; The main module includes a second-hand trading item database and a second-hand trading item search engine; The second-hand trading item database is used to store and classify the information of second-hand trading items in different ways including categories and functions; The second-hand trading item search engine is used for users to search for items according to keywords; The offline appointment module is used for the sellers among the users to make appointments for offline booths, and for both the buyers and sellers to make appointments for trading activities in a one-to-many form.

[0006] According to the above solution, the account management module includes a registration and login module and a personal homepage module; The registration and login module is used for users without registered accounts to enter the second-hand trading system and input relevant information to register accounts; or for users with existing accounts to select their identities and login methods, and input account numbers and passwords to log in; or for unlogged-in users to choose to skip registration and login and only browse the system web pages; The personal homepage module of the user is used to display account information to the logged-in user, including the registration information of the account, the number of orders and the trading progress of each order, the content of the received and sent messages; it also includes items intended to be purchased, the item browsing history, and reminders of offline trading activities.

[0007] According to the above solution, the main module also includes a homepage module; The homepage module includes a user function navigation partition and an item display partition; The user function navigation partition is used to guide users of each type to use corresponding services; The item display partition is used to display item icons to help users retrieve the second-hand trading items they need.

[0008] According to the above solution, the main module also includes an order module, a message module and a mobile module; The order module is used to manage online second-hand trading orders; The message module is used to manage the communication information between users of each type; The mobile module is used to synchronize information to users using mobile devices.

[0009] According to the above solution, the offline appointment module includes a historical transaction module and an event introduction module; The historical transaction module is used to display the historical booth layouts and the items sold by previous users; The event introduction module is used to introduce the information of the upcoming offline second-hand trading market.

[0010] According to the above solution, it also includes a product recommendation module; The product recommendation module includes an advertisement module and a personalized recommendation module; The advertisement module is used for enterprises to pay to display advertisements on the home page; The personalized recommendation module is used to recommend items that the user is interested in based on the background data of the items browsed by the user, and display them on the home page or recommend hot search terms for the user to search.

[0011] According to the above solution, it further includes a reward module; The reward module is used to issue honorary titles and points to the user according to the monthly successful transaction order volume. The honorary titles and points are used to exchange the qualification for the items to be traded to be displayed on the home page. The duration of the display qualification is related to the type of honorary title and the number of points.

[0012] A method for calculating the carbon emission reduction amount of second-hand items trading on campus based on the Internet, including the following steps: S1: Calculate the amount of materials saved by a single user through second-hand trading reuse within a period of time by multiplying the order volume of second-hand item trading within a period of time by the number of second-hand items in each order and the quality of each second-hand item. S2: Calculate the carbon emission reduction amount of second-hand item reuse at different stages of the life cycle. S3: Calculate the carbon emission reduction amount achieved by a single user through second-hand trading for waste reuse within a period of time.

[0013] Further, in the step S2, the specific steps are as follows: Calculate the carbon emissions of second-hand items in the waste transportation stage by multiplying the amount of materials saved by a single user through second-hand trading reuse within a period of time by the proportion of different treatment and disposal methods, the carbon emission factor in the waste transportation stage, and the distance to different treatment and disposal sites. Calculate the carbon emissions of second-hand items in the treatment and disposal stage by multiplying the amount of materials saved by a single user through second-hand trading reuse within a period of time by the proportion of different treatment and disposal methods and the carbon emission factor of the corresponding treatment method.

[0014] A computer memory stores a computer program executable by a computer processor, and the computer program executes a method for calculating the carbon emission reduction amount of second-hand items trading on campus based on the Internet.

[0015] The beneficial effects of the present invention are as follows: 1. The second-hand item trading system and method on campus based on the Internet of the present invention provides online and offline comprehensive services for second-hand trading related parties including students, school authorities, management parties, and advertising parties by building an online and offline integrated campus second-hand trading website, meets the needs of different users through flexible trading methods, improves the security and convenience of transactions, realizes the management and recycling of campus second-hand items, and creates corresponding economic value and social value.

[0016] 2. The present invention is directed to the classified trading and management of second-hand items in colleges and universities. By introducing a visual function of environmental contribution to quantify the amount of carbon emission reduction, it realizes the dataization and visualization of user transactions. By visually displaying the carbon emission reduction contributions of users, users can intuitively see the positive impact of their behaviors on the environment, enhancing their sense of environmental protection participation and achievement. It avoids valuable recyclable items from being discarded or entering the trash can for mixed collection and transportation, reducing the resource waste and environmental pollution caused by end landfill or incineration. It promotes resource conservation and environmental protection, and realizes the resource utilization of second-hand items with waste reduction and carbon dioxide emission reduction.

[0017] 3. Through the intelligent push system of the platform, the present invention quickly matches the information of buyers and sellers according to user preferences and needs, enabling buyers and sellers to quickly find suitable trading partners, greatly improving the trading efficiency. The standardized service process and the relatively short living distance of users on campus reduce the uncertainty in transactions, provide an effective channel for students to recycle resources, reduce intermediate links, optimize the user experience, and improve the efficiency and profit margin of resource allocation.

[0018] 4. By providing a convenient online and offline market, the present invention provides an opportunity for sellers to turn their idle items into cash and also provides a way for buyers to purchase the required items at a lower price. This not only increases the disposable income of students but also reduces their living costs. At the same time, it enhances the environmental awareness of students, promotes the redistribution of resources and waste reduction at the source, reduces the generation of waste and resource waste, promotes green consumption on campus, conforms to the environmental protection concept of sustainable development, and realizes the maximization of economic benefits.

[0019] 5. By encouraging and promoting the reuse of second-hand books and clothes, the present invention reduces the generation of waste on campus, reduces the operating pressure of campus cleaning and waste treatment, saves waste treatment costs, and alleviates the management pressure on the campus environment.

[0020] 6. The present invention provides a platform for enterprises around the campus to display their environmental protection concepts and social responsibilities. Through precise advertising placement, it attracts consumers with environmental awareness and constructs the enterprise's environmental protection image and social responsibility. At the same time, the platform obtains service fees from advertisers to achieve the sustainable development of the platform.

[0021] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 It is the website technical roadmap of the embodiment of the present invention.

[0024] Figure 2 It is the login interface diagram of the embodiment of the present invention.

[0025] Figure 3 It is the function and permission diagram of each user object of the embodiment of the present invention.

[0026] Figure 4 It is the user personal homepage interface diagram of the embodiment of the present invention.

[0027] Figure 5 It is the platform or school personal homepage interface diagram of the embodiment of the present invention.

[0028] Figure 6 It is the enterprise personal homepage interface diagram of the embodiment of the present invention.

[0029] Figure 7 It is the main module function diagram of the embodiment of the present invention.

[0030] Figure 8 It is the homepage interface diagram of the embodiment of the present invention.

[0031] Figure 9 It is the homepage search navigation diagram of the embodiment of the present invention.

[0032] Figure 10 It is the offline reservation interface diagram of the embodiment of the present invention.

[0033] Figure 11 It is the commodity recommendation interface diagram of the embodiment of the present invention. Specific embodiments

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear and understandable, the following further details the present invention in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Embodiment 1 This embodiment is used to construct an Internet-based campus second-hand item trading system, including a user management module, a trading main module and an offline reservation module.

[0036] The user management module is used to set corresponding functional permissions for different user types; the user types include users, platforms, schools, and enterprises; the permissions of users include publishing, processing, viewing, and evaluating online orders, submitting and editing offline transaction applications, and also include information sending and receiving permissions with the platform and other users; the permissions of the platform include viewing, reviewing, and editing online orders and offline transaction applications submitted by users, managing advertising applications of enterprises, managing information publicly available to users, schools, and enterprises, and also include information sending and receiving permissions with users, schools, and enterprises; the permissions of schools include viewing and managing online orders and offline transaction applications of users, counting user behaviors and sending rewards and punishments measures to the platform, and also include information sending and receiving permissions with the platform and enterprises; the permissions of enterprises include submitting advertising applications to the platform and making investments in the platform, and also include information sending and receiving permissions with the platform and schools.

[0037] The main module includes a second-hand trading item database and a second-hand trading item search engine; the second-hand trading item database is used to store and classify information of second-hand trading items in different ways including categories and functions; the second-hand trading item search engine is used for users to search for items according to keywords.

[0038] The offline reservation module is used for the sellers among users to reserve offline booths, and for both buyers and sellers to reserve trading activities in a one-to-many form.

[0039] The account management module includes a registration and login module and a personal homepage module; the registration and login module is used for users without registered accounts to enter the second-hand trading system and input relevant information to register an account; or for users with existing accounts to select their identities and login methods, and input account numbers and passwords to log in; or for unlogged-in users to choose to skip registration and login and only browse the system web page; the personal homepage module of users is used to display account information to logged-in users, including registration information of the account, the number of orders, and the transaction progress of each order, the content of received and sent messages; it also includes items intended to be purchased, item browsing history, and offline trading activity reminders.

[0040] The main module also includes a homepage module; the homepage module includes a user function navigation section and an item display section; the user function navigation section is used to guide each user type to use corresponding services; the item display section is used to display item icons to help users retrieve the second-hand trading items they need.

[0041] The main module also includes an order module, a message module, and a mobile module; the order module is used to manage online second-hand trading orders; the message module is used to manage the communication information between different user types; the mobile module is used to synchronize information to users using mobile devices.

[0042] The offline reservation module includes a historical transaction module and an event introduction module; the historical transaction module is used to display the historical booth arrangements and the items sold by previous users; the event introduction module is used to introduce the information of the upcoming offline second-hand trading market.

[0043] It also includes a product recommendation module; the product recommendation module includes an advertisement module and a personalized recommendation module; the advertisement module is used for enterprises to pay to display advertisements on the home page; the personalized recommendation module is used to recommend items that users are interested in based on the background data of the items browsed by users and display them on the home page or recommend hot search terms for users to search.

[0044] It also includes a reward module; the reward module is used to issue honorary titles and points to users according to the monthly successful transaction order volume, and the honorary titles and points are used to exchange the qualification to display the items to be traded on the home page, and the duration of the display qualification is related to the type of honorary title and the number of points.

[0045] In this embodiment, by constructing an online and offline integrated campus second-hand trading website, comprehensive online and offline services are provided for second-hand trading related parties including students, school authorities, management parties, and advertising parties. Different user needs are met through flexible trading methods, the security and convenience of transactions are improved, the management and recycling of campus second-hand items are realized, and corresponding economic value and social value are created.

[0046] Embodiment 2 The steps of this embodiment are the same as those of Embodiment 1, except that each module is applied to a specific example. Specifically, it includes: a user management module, a transaction main module, an offline reservation module, and a product recommendation module.

[0047] 1 User management module The user management module is used to set corresponding function permissions for different types of users; the user management module includes a registration and login module and a personal homepage module.

[0048] 1.1 Registration and login module When a new user enters the second-hand trading platform system, it jumps to the registration interface and enters relevant information to register an account; see Figure 2 , users with registered accounts directly select their identities and login methods, re-select their identities after entering the login interface, and enter their mobile phone numbers and passwords to log in; or choose to skip registration and login and only browse the web pages.

[0049] 1.2 Personal homepage module Users enter the personal homepage through the navigation bar at the upper end of the homepage. The basic functions of the personal homepage include my shopping cart, my favorites, and my consignment for sale, etc. Corresponding function keys are also set for different types of users.

[0050] See Figure 3, the users of the website include students, management parties, school authorities, and advertisers, corresponding to four user types: users, platforms (managed by schools), schools, and enterprises respectively. Each identity's client has its relevant functions and permissions, as shown in Table 1.

[0051] Table 1 Relevant Functions and Permissions of Each User Client

[0052] See Figure 4 , users include buyers and sellers; buyers can view ongoing orders and evaluate completed recycling orders; sellers can view the trading progress of items consigned to the platform for sale in "My Consignment for Sale" and view consignment records in "My Agency Sale".

[0053] The item trading function is provided to students for free and includes two execution modes: offline trading and platform trading. Students can choose to trade directly after meeting with both parties. After the buyer confirms the completion of the order, the system will confirm the order completion; or pay the money for the transaction to the platform first, and after the buyer confirms receiving the item, the platform will then pay the money to the seller.

[0054] See Figure 5 , platforms, schools, and enterprises can all view cooperative orders, manage relevant cooperation content, add friends and communicate with cooperation partners, and give rewards to students with good performance.

[0055] The platform can handle opinions feedback by users, review advertisements and flea market booth applications, and manage the seller accounts selected for consignment sales.

[0056] See Figure 6 , enterprises can make payments to cooperative colleges and universities on this page and then apply for advertising spaces.

[0057] 2 Transaction Main Module See Figure 7 , the main module includes a homepage module, a second-hand trading item database, a second-hand trading item search engine, an order module, a message module, and a mobile module.

[0058] 2.1 Homepage Module See Figure 8 , the homepage is used to intuitively display the basic information of the platform and quickly guide different users to use corresponding services.

[0059] 2.2 Second-Hand Trading Item Database The second-hand trading item database is used to classify second-hand books, second-hand clothes, and other second-hand items in different ways according to categories and functions, greatly improving the efficiency of users browsing goods.

[0060] 2.3 Second-Hand Trading Item Search Engine SeeFigure 9 The second-hand trading item search engine is used for users to search for items according to keywords, and can also be searched through the hot words below the home page.

[0061] 2.4 Order Module The order module is used to manage the second-hand trading orders conducted online.

[0062] 2.5 Message Module The message module is used to send order information and platform management information to the users participating in the transaction.

[0063] 2.6 Mobile Module The mobile module is used to synchronize the information of the PC side to the users using the mobile side.

[0064] 3 Offline Appointment Module See Figure 10 The offline appointment module includes a historical transaction module and an event introduction module; the historical transaction module is used to display the historical booth layout and the items sold by previous users; the event introduction module is used to introduce the event time, location and content of the upcoming flea market.

[0065] Both the buyer and the seller are composed of user terminals; the user acting as the seller reserves an offline booth by paying a certain management fee; the user acting as the buyer can make an online appointment in advance for the items they want to buy, and multiple people can make an appointment at the same time, and the transaction result is determined in person offline.

[0066] 4 Commodity Recommendation Module See Figure 11 The commodity recommendation module includes an advertisement module, a reward module and a personalized recommendation module; the advertisement module is used for enterprises to pay to display advertisements on the home page; the reward module is used to issue integral rewards and "Low-carbon Stars" to the buyers and sellers after a successful transaction, and through integral redemption, the items to be traded are rewarded to be displayed on the home page of the website; the personalized recommendation module is used to recommend items that the user may be interested in according to the background data of the items browsed by the user.

[0067] The selection criteria for the "Low-carbon Star" are: users whose order volume of trading second-hand items reaches the top 10% of the total order volume statistically by the platform within one month can obtain the honorary title of "Low-carbon Star" and receive corresponding integral rewards, and these points can be used to exchange for a fixed position on the home page of the website to display their own goods.

[0068] The operating environment of this embodiment is: Table 2 Operating Environment

[0069] Embodiment 3 This embodiment is based on the system of Embodiment 1. For the centralized processing of second-hand books and clothes on college campuses, it statistically calculates the difference in carbon emissions after centralized second-hand trading cycles and partial resource recovery, and then quantifies the environmental and economic benefits brought by second-hand trading. The specific steps are as follows: For second-hand items with a mass of M, if there is no second-hand trading and resource recovery, and the environmental benefit that can be generated after resource recovery processing is H, the theoretical income of this item can be obtained in numerical form. Taking second-hand books as an example, the carbon emission reduction amount achieved by a single user through second-hand trading for waste reuse within one month is calculated as follows: S1: The amount of paper saved through the reuse of second-hand books:

[0070] In the formula: M B represents the amount of paper saved by the user through second-hand book trading within one month, with the unit of kg ; i represents the number of trading orders for second-hand books, with the unit of order; j represents the number of second-hand books in each order in the second-hand book trading, with the unit of copy; k represents the number of pages of each book in the order, with the unit of page; is the average weight of each page of paper in the book, with the unit of kg .

[0071] S2: Carbon emission reduction amounts at different stages of the life cycle of second-hand book reuse: Transportation stage:

[0072] In the formula: CE T_D represents the carbon emissions of second-hand books in the waste transportation stage, with the unit of kgCO 2 e ; x represents different treatment and disposal methods (landfill, incineration, resource utilization) ,Px represents the proportion of different treatment and disposal methods (%); CEF T_D represents the carbon emission factor in the waste transportation stage (road transportation by vehicle); Dx represents the distance to different treatment and disposal plants.

[0073] Treatment and disposal stage:

[0074] In the formula: CE Drepresents the carbon emissions of second-hand books in the disposal stage, with the unit of tCO 2 e ; CEF D，x represents the carbon emission factor of the corresponding treatment method.

[0075] This embodiment is directed to the classified trading and management of second-hand items in colleges and universities. By introducing the function of visualizing environmental contributions, it quantifies the carbon emission reduction amount, realizes the digitization and visualization of user transactions; by visually displaying the carbon emission reduction contributions of users, users can intuitively see the positive impact of their behaviors on the environment, enhancing users' sense of environmental protection participation and achievement; it avoids valuable recyclable items from being discarded or entering the trash can for mixed collection and transportation, reducing the resource waste and environmental pollution caused by end-of-life landfill or incineration; it promotes resource conservation and environmental protection, and realizes the resource utilization of second-hand items with waste emission reduction and carbon dioxide emission reduction.

[0076] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0077] It should be noted that according to the needs of implementation, each step / component described in the present application can be split into more steps / components, or two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0078] This embodiment further includes a processor, a communication interface, a memory, and a communication bus; wherein the processor, the communication interface, and the memory complete communication with each other through the communication bus; a computer program is stored in the memory, and when the program is executed by the processor, the processor is caused to execute the steps of a method for calculating the carbon emission reduction amount of campus second-hand item transactions based on the Internet.

[0079] This embodiment also provides a computer-readable storage medium, on which executable instructions are stored, and when the instructions are executed by the processor, the processor is caused to implement a method for calculating the carbon emission reduction amount of campus second-hand item transactions based on the Internet.

[0080] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects.

[0081] Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0082] This application is described with reference to the block diagrams of the device (system) according to Embodiment 1 of this application and the flowcharts of the method and computer program product according to Embodiment 3. It should be understood that each process or block in the flowchart or block diagram, as well as the combination of processes or blocks in the flowchart or block diagram, can be implemented by computer program instructions.

[0083] These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a machine for implementing the functions specified in one process Figure 1 one process or multiple processes or blocks Figure 1 or multiple blocks of an Internet-based campus second-hand item trading system.

[0084] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing devices to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in one process Figure 1 one process or multiple processes or blocks Figure 1 or multiple blocks.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing devices, such that a series of operation steps are executed on the computer or other programmable devices to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable devices provide steps for implementing a method for calculating the carbon emission reduction amount of an Internet-based campus second-hand item trading specified in one process Figure 1 one process or multiple processes or blocks Figure 1 or multiple blocks.

[0086] The above embodiments are only used to illustrate the design concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications made according to the principles and design concepts disclosed by the present invention are within the protection scope of the present invention.

Claims

1. A campus second-hand goods trading system based on the Internet, characterized by: It includes user management module, main transaction module and offline reservation module; The user management module is used to set corresponding functional permissions for different user types; User types include users, platforms, schools, and enterprises; The user's rights include publishing, processing, viewing and evaluating online orders, submitting and editing offline transaction applications, and the right to send and receive information with the platform and other users; The platform's permissions include viewing, reviewing and editing online orders and offline transaction applications submitted by users, managing corporate advertising applications, managing public information of users, schools and companies, and also including the permission to send and receive information with users, schools and companies; The school's permissions include viewing and managing users' online orders and offline transaction applications, counting users' behaviors and sending rewards and punishments to the platform, as well as the permission to send and receive information with the platform and enterprises; The rights of enterprises include submitting advertising applications to the platform and investing in the platform, as well as the right to send and receive information with the platform and schools; The main modules include a second-hand transaction item database and a second-hand transaction item search engine; The second-hand transaction item database is used to store and classify information of second-hand transaction items in different ways including categories and functions; Second-hand trading item search engines are used for users to search for items based on keywords; The offline reservation module is used for sellers among users to reserve offline stalls, and for buyers and sellers to reserve trading activities in a many-to-one format.

2. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: The account management module includes the registration and login module and the personal homepage module; The registration and login module is used for users who have not registered an account to enter the second-hand trading system and enter relevant information to register an account; or for users who already have an account to select an identity and login method, and enter an account number and password to log in; Or for users who are not logged in to choose to skip registration and login and only browse the system web pages; The user's personal homepage module is used to display account information to logged-in users, including account registration information, order quantity and transaction progress of each order, received and sent information content; it also includes intended purchase items, item browsing history, and offline transaction activity reminders.

3. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: The main module also includes the homepage module; The homepage module includes a user function navigation partition and an item display partition; The user function navigation partition is used to guide each user type to use the corresponding services; The item display partition is used to display item icons to help users retrieve the second-hand items they need.

4. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: The main module also includes order module, message module and mobile terminal module; The order module is used to manage online second-hand transaction orders; The message module is used to manage the exchange of information between different user types; The mobile terminal module is used to synchronize information with users using the mobile terminal.

5. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: The offline reservation module includes the historical transaction module and the activity introduction module; The historical transaction module is used to display historical stall layouts and items sold by previous users; The event introduction module is used to introduce the information of the upcoming offline second-hand trading market.

6. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: It also includes a product recommendation module; The product recommendation module includes an advertising module and a personalized recommendation module; The advertising module is used for companies to pay to display advertisements on the homepage; The personalized recommendation module is used to recommend items of interest to users based on the background data of items browsed by users and display them on the homepage or recommend hot words for users to search.

7. The Internet-based campus second-hand goods trading system according to claim 1 is characterized by: Also includes bonus modules; The reward module is used to issue honorary titles and points to users based on the monthly number of successful transaction orders. The honorary titles and points are used to redeem the qualification to display the items to be traded on the homepage. The duration of the display qualification is related to the type of honorary title and the number of points.

8. A carbon reduction calculation method for campus second-hand goods transactions based on the Internet, characterized by: The following steps are involved: S1: Calculate the amount of materials saved by a single user through second-hand transaction reuse within a period of time by multiplying the number of orders for second-hand item transactions within a period of time by the number of second-hand items in each order and the quality of each second-hand item; S2: Calculate the carbon emission reduction of reusing second-hand items at different stages of their life cycle; S3: Calculate the carbon reduction achieved by a single user through waste reuse through second-hand transactions over a period of time.

9. The carbon reduction calculation method for campus second-hand goods transactions based on the Internet according to claim 8 is characterized by: In the step S2, the specific steps are: The carbon emissions of second-hand items at the waste transportation stage are calculated by multiplying the amount of materials saved by a single user through second-hand transactions and reuse over a period of time by the proportion of different treatment and disposal methods, the carbon emission factor at the waste transportation stage, and the distance of transportation to different treatment and disposal sites; The carbon emissions of second-hand items during the processing and disposal stage are calculated by multiplying the amount of materials saved by a single user through second-hand transactions over a period of time, the proportion of different processing and disposal methods, and the carbon emission factors of the corresponding processing methods.

10. A computer memory, characterized in that: A computer program executable by a computer processor is stored therein, and the computer program executes an Internet-based method for calculating carbon reduction in campus second-hand goods transactions as described in any one of claims 8 to 9.

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