I. Advantages and Disadvantages of Existing Prefabricated Building Construction

1. Advantage Analysis

Prefabricated buildings are buildings assembled on site using prefabricated components. Compared with traditional buildings, prefabricated buildings require less storage space for materials, produce less construction noise, and the standardized production method is conducive to resource conservation and environmental protection. At the same time, the construction of prefabricated buildings can be assembled after only appropriate foundation treatment, resulting in fast construction speed and low labor intensity. Furthermore, standardized, mechanized, and high-precision production methods ensure the quality of the building. Therefore, prefabricated buildings have incomparable advantages over traditional buildings.

2. Disadvantage Analysis

Prefabricated construction also has many problems. The construction schedule is affected by many factors such as the manufacturer's component production speed and transportation methods. Changes during construction are detrimental to component production, and problems such as \"errors, omissions, collisions, and defects\" are prone to occur during installation. Prefabricated buildings require strong technical and professional knowledge in both production and installation. China's building industrialization process is still in its early stages, lacking a group of professionals who understand industrial technology and are familiar with prefabricated buildings.

　　II. Application of RFID Technology in Prefabricated Building Construction Management

Unlike traditional construction project operation management, the construction management process of prefabricated buildings can be divided into five stages: production, transportation, entry, storage, and hoisting. Whether the information on the manufacturing, transportation, and arrival of various components during the construction process can be obtained accurately and timely greatly affects the overall project schedule management and construction procedures. Effective component information on the construction site facilitates the storage of various components and parts systems, reducing secondary handling. However, traditional material management methods not only risk errors but also have a certain lag. To solve the disconnection between production and construction in prefabricated buildings, FineJoin applies RFID technology throughout the entire construction process of prefabricated buildings. The application stages and methods are shown in the figure below.

                  

1. Component production stage. During the component prefabrication stage, the prefabrication yard staff first use RFID read/write equipment (D2180U) to write all information about the component or part (e.g., precast column dimensions, curing information) into the RFID chip. Based on user requirements and current coding methods, and drawing on the coding rules of the engineering contract list, the component is encoded. Then the production staff embed the RFID chip containing all component information into the component or part system for later stages to read and access relevant information.

2. Component transportation stage. In the component transportation stage, RFID chips are embedded into transport vehicles to continuously collect vehicle transport status, seeking the shortest route and shortest travel time, thereby effectively reducing transportation costs and speeding up the project schedule.

3. Component entry and storage management stage. The card reader in the access control system receives the entry information of transport vehicles and immediately notifies relevant personnel to perform entry inspection and on-site acceptance. After acceptance, the components are transported to designated positions for storage as required, and the arrival information of the components is recorded into the RFID chip for future reference of component arrival information and usage.

4. Component hoisting stage. Ground staff and construction machinery operators each hold an RFID handheld terminal (M10A) and a display. Ground staff use the RFID handheld terminal to read component-related information and transmit data to the background, and the results are displayed on the display. Machinery operators perform hoisting in sequence according to the information on the display, achieving one-step positioning, saving time and effort. In addition, the precise positioning capability of RFID technology in small areas can quickly locate and arrange transport vehicles, improving work efficiency.