At present, China is vigorously promoting the industrialization of housing, and fabricated concrete structures are gradually being revisited as a form of industrialized building structure. Assembled concrete structure is to split the concrete structure into a variety of prefabricated building elements (beams, columns, floor slabs, etc.), cast in the prefabricated structure factory, and then transported to the construction site, hoisting in place for connection point construction, the resulting assembly type structure. It can be seen that the prefabricated component runs through the entire housing industry supply chain. How to manage the life cycle of the prefabricated components, realize real-time positioning, tracking, and monitoring, and timely acquire information such as the basic status, usage, and position of the components, and perform Information processing has become the key to realizing the industrialization of housing.
With the development of public information platform and the development of information integration technology, information technology has begun to be widely applied in enterprise management,RFID technology as a new generation of automatic identification technology, is applied to the circulation of prefabricated component companies. Completely change the traditional supply chain management model, greatly improve the operating efficiency of prefabricated enterprises and achieve the goal of refined management of prefabricated components.
RFID technology principle
RFID technology, or radio frequency identification technology, is a radio wave communication technology that can recognize a specific target and display related information contained in the radio wave without requiring the identification system to establish optical or mechanical contact with a specific target. The RFID system consists of an RFID reader/writer (PDA), a tag, and an application system, and mainly includes three features:
(1) The non-contact information is read without interference from the cover and can be communicated over long distances with strong penetrability;
(2) The information contained in multiple electronic tags can be received at the same time, and the reading of information is convenient;
(3) It has good anti-pollution ability and durability and can be reused.
The reader/writer transmits RF energy to the identification area to form an electromagnetic field. When the RFID tag passes through the area, it is activated to send information to the reader. At the same time, the reader can also send information to the tag and rewrite the data in the tag. The main functions of the reader include the realization of data communication with the tag and the transfer of identification information to the data management system via the network connection.
Life cycle tracking management process
1, prefabricated production stage
At the stage of component production, the RFID tags are installed on the components during the production of prefabricated components. The RFID tags mainly record the basic information such as the manufacturer, production date, and records of product inspection records. The inspection records mainly include molds, rebar cages, aluminum windows, embedded parts, and electromechanical devices. , product size, maintenance, tile and shipping inspections and other 10 items. At the same time, the ID number of the component corresponding to the design drawing and the construction drawing should also be recorded. This product number is unique to the component. This is also the basis for component identification in the future. At the same time, according to the analysis of the information required at each stage before, combined with the appropriate coding principles, the component information is entered into the RFID tag in encoded form, and the RFID tag becomes the “identity” symbol of the component.
2, prefabricated components transport phase
The process of transporting prefabricated concrete parts is the process of transporting the components produced in the factory to the construction site for installation and splicing. The transportation process of prefabricated components should include four stages of loading, transporting, unloading and stacking. The management of this stage involves more aspects of logistics management. Because the prefabricated components are a kind of special products and require teams for loading and unloading, their transportation, stacking and hoisting are often completed by component suppliers.
3, prefabricated components entering and stacking stage
After the components are transported to the construction site, they need to be temporarily stacked in the yard. At this stage, the daily maintenance, monitoring and positioning of the components are required. The stacking sequence should be strictly in accordance with the construction and installation sequence. After the components arrive at the yard, they need to grasp the basic information of the components and check the storage status at any time. The specific stacking position of the registration member ensures that the target member can be accurately and quickly found when the installation is required.
4, prefabricated component installation phase
RFID technology can not only realize the real-time positioning of components, but also monitor the installation progress and quality of components. Since each component will carry its corresponding technical file and RFID tag at the same time, the installation engineer can correspond to the installation and construction drawings based on the information in the technical file and the RFID tag. The RFID tag includes the component number and the connection project. Project number, connection engineering technical standards and other basic information.
Concrete prefabricated components are the basic elements of prefabricated housing, run through the entire supply chain of residential construction, and it is imperative to vigorously develop prefabricated housing and realize industrialization of housing, which is crucial to the life-cycle management of components. Applying RFID technology to the tracking of prefabricated components helps to optimize the supply chain, improve supply chain performance, integrate supply chain information, and realize real-time monitoring of prefabricated components such as production, transportation, stacking, and installation schedule quality. Construction efficiency, reduce construction time, and reduce life cycle management costs. In short, the application of RFID technology to the fine management of prefabricated components will certainly promote the development of China's housing industry.