Application of RFID in automobile production line

As a typical situation in discrete industrial production, automobile assembly production activities have the following characteristics: the production process is parallel and asynchronous, the equipment function is redundant, the control quantity is independent of each other, the production resource management is complicated, and the parts in the production process are discrete. State, the production of vehicles is mainly realized through physical processing and assembly.

RFID technology is not just a simple replacement of bar code technology, its application in discrete manufacturing will change the production and operation of discrete manufacturing enterprises. Because RFID technology has many advantages such as large data storage capacity, readable and writable, non-contact, long recognition distance, fast recognition speed, good confidentiality, strong penetration, long life, good environmental adaptability, and the ability to recognize multiple tags at the same time, Use it to replace barcodes to identify and track vehicles on the automobile production line. There is no manual intervention in the whole process, which can greatly reduce the labor intensity and error rate of workers. Nowadays, RFID technology can be used to realize automatic, high-speed, and effective recording, reduce the labor intensity of operators, and improve the pass rate of products offline.

Application of RFID in automobile welding production line
 
In the early car body welding production lines, most of the manual methods were used. The operation was carried out step by step according to the written operation manual, which was prone to human error. Later, bar code labels were gradually used for management. Although the human error rate was reduced, identification errors often occurred due to the influence of dust, high temperature vibration, and oil pollution on the production site. When it comes to the situation with a cover, no matter whether it is a barcode label or manually, it can not be used with confidence. The schematic diagram of the application of RFID in the automotive welding production line is shown in the figure.

In the picture, select the active packaging label that is resistant to high temperature, dust, metal, magnetic field, and reusable, and monitor the welding production line through automatic identification. The operation instruction information (vehicle type information, welding instruction information, program, etc.) can be stored in the target tray. The antenna can be set in a higher place of the welding production line in order to avoid the influence of people and machines. Due to the strong anti-pollution ability of RFID tags And strong durability, which greatly reduces identification errors and can effectively improve the visibility of the internal supply chain.

Application of RFID in automobile coating production line

time, and send it to the production control center in time.
 

On the automobile coating production line, the conveying equipment is a skid conveyor. As shown in Figure 3, each skid carrying the car body is equipped with a passive RFID tag with a temperature of 240℃. In the entire production process, this label runs with the workpiece, forming a piece of data that moves with the body, becoming a "smart car body" that carries data with you. According to the different needs of the production process and management, on-site reading and writing stations can be set up at the entrance and exit of the paint shop, the branch of the workpiece logistics, and the entrance of important technological processes (such as paint spraying room, drying room, storage area, etc.). Each on-site reading and writing station can complete the writing of skid, body information, spray color and frequency, and send the information to the control center at the same time.

RFID technology combined with fiber optic Ethernet and field bus can form a complex automatic control system, realize the flexible production of automobile coating production line, improve the automation level of automobile body production and the flexibility of adapting to different types of production, so that the system is very reliable Performance and fault tolerance.

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Take Ford Motor Company as an example. Its Mexican plant began to use RFID technology to solve the above problems a few years ago. The factory installs recyclable and reusable RFID tags on the hangers of assembled vehicles, and then compiles the corresponding serial number for each assembled vehicle, and writes this serial number into the RFID tag with a reader, with detailed requirements for the car The label runs along with the assembly conveyor belt. Install the reader at the appropriate position at each work point to ensure that the car completes the assembly task without error at each assembly line position. When the hanger carrying the assembled vehicle passes the reader, the reader can automatically obtain the information in the tag and send it to the central control system. The system can collect production data and quality monitoring data on the production line in real time, and then send it to Material management, production scheduling, quality assurance and other related departments. In this way, functions such as raw material supply, production scheduling, quality monitoring, and vehicle quality tracking can be realized at the same time, and various malpractices of manual operation can be effectively avoided.

　　RFID技术在汽车生产线中的应用，有着其他技术无法比拟的优势，非接触式自动获取数据并且可承受恶劣工作环境，这就保证了其优点是配置灵活、响应速度快、对系统通信的要求低，使生产厂能准确采集相关数据并进行在线分析和处理，实现汽车生产线的自动实时追踪和有效监控，提高了生产效率。相信随着RFID技术的不断发展和应用系统的推广普及，RFID技术在性能方面必将会有较大提高，成本也将逐步降低，从而安全隐患也将得到缓解。RFID技术必将成为汽车信息化制造与汽车信息化管理的主流，从而推动汽车产业的发展。