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At present, the degree of informatization in the automotive industry is uneven, some are highly informatized, and some still use the method of completely manual operation and recording. Although most companies have established their own ERP systems, most of them have their own information systems, serious information islands, and serious inconsistencies in the degree of informatization. All companies hope to establish an identification system to improve their management level, improve the efficiency of the entire logistics link, and reduce the error rate.
System architecture and principles
The construction of the RFID automotive industry application system local area network is to connect all smart handheld terminals to the local area network through wireless AP (Access Point, wireless access node) to connect to the back-end database. Fixed and handheld RFID readers, RFID printers (used to print RFID labels), printers (used to print out and warehousing orders), AP, and connection to the back-end database are used in the front desk.
A typical RFID automatic identification system consists of the following parts: tag (Tag), reader (Reader), antenna (Antenna), application system (Application System), etc. Its working principle is shown in Figure 1.
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Figure 1 Composition of RFID automatic identification system
Establish a unified central database on the site of the enterprise workshop as an information platform for the circulation of goods to facilitate overall standardized management. In the industrial link, RFID technology is used to assign an identification number (ID, that is the name of the part in the information network) to each work-in-progress component. Through RFID technology, the production status and inventory situation are mapped to the information network and registered on the spot In the central database, it is then transmitted to the information system (such as ERP, MRP, etc.).
System module
The RFID automotive industry application system mainly includes the following functional modules: user login and signal testing (including network settings), traceable parts scanning, consolidation, code reading, kanban card and pull list association, repackaging plan download, inventory, domestic production Large standard packaging out of storage, original packaging quantity modification, repaired parts in storage, standard large packaging out of storage, original packaging out of storage, repaired parts out of storage, standard small packaging out of storage, original packaging online, and standard packaging in supermarket materials Shelf, unplanned picking, original packaging quantity input, standard packaging quantity modification, standard packaging offline, confirmation of the remaining quantity of the original packaging, notification download, original packaging from LCL, password modification, parts information query, etc.
Benefits of using RFID system
1. Error prevention management
Nowadays, user customization has become popular. Users can choose the color, engine model and tire style of the car they need from tens of thousands of internal and external options. In this way, the car assembly line has to assemble hundreds of kinds. It is very difficult to accomplish such a complex task for a style car without a highly organized and complex control system. Equipped with an RFID system on the assembly line, using reusable radio frequency tags, the radio frequency tags can carry all the requirements required by the car in detail, and there are readers at each work point, which can ensure that the car is The assembly task can be completed without error at each assembly line position.
2. Warehouse management (as shown in Figure 2)
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Figure 2 Warehouse management
Using the RFID system, a complete supplier delivery quality record and batch information can be established, and the parts provided by each supplier (enter the enterprise according to the electronic billboard) can be labeled and recorded, and the model, type, batch, and production date can be understood And so on, carry out warehouse-in and out-warehouse management.
3. Real-time monitoring of the production line (as shown in Figure 3)
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RFID tracking management can be carried out for the entire production process from the product entering the assembly workshop to the final inspection of the vehicle.
4. Cost control
Using modern logistics theory to improve the storage of auto parts and complete vehicles can save costs and save the waste of production and temporary inventory in each workshop of the enterprise.
5. Product traceability
In recent years, my country has introduced an automobile recall system, which puts forward higher requirements for product traceability. Product traceability requires detailed production site records, including all aspects of production, quality, and materials.
According to the RFID tag information, the production information of each key station of the car in the assembly workshop can be queried in real time, such as production time, operator, inspector, batch, serial number, quality data, process data, test data, etc.; understandable Manufacturing process information, such as repair and processing results, etc.; you can query the quality information of the car at important stations, including defect data, measurement data, and process capability of the station; you can trace the important parts and safety parts of the car Related information such as the quality information, the main accessory manufacturer information, the specific details of the installation and so on.
According to product information, it can be traced back to product batches and key component batches to find other products of the same batch; it can be traced upward to materials and components, and downward to end users.
6. Defect management
The whole vehicle production is mainly assembled and involves a large number of parts (including in-house self-made parts and outsourced parts). Various defects will inevitably occur during the assembly process. Some of them come from parts, some are produced in this process, and some are produced in the previous process. of. In order to improve the quality and reduce the repair rate, it is necessary to monitor and record the defects of each car in real time, and take timely measures.
Advantages of RFID system
1. The electronic tag can be read multiple times (up to 100,000 times);
2. RFID electronic tags can be stably read by the reader (low error rate);
3. It can save a lot of manpower and time;
4. The command of the main system to the production process is comprehensively improved;
5. The whole production process is connected with the main system, and the production efficiency is greatly improved. (
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