With the rapid development of global economic integration, the automobile industry is becoming more and more open, and the domestic automobile manufacturing industry is facing tremendous operational pressure. The automotive industry is somewhat informative, while others continue to use fully manual records. Although most enterprises have established their own information system systems, most of them have serious inconsistencies in informationization. At the same time, with the mass production and use of automobiles, the society will have higher and higher requirements for the development of the automobile industry. All enterprises hope to establish a recognition system to improve their management level to improve efficiency and reduce error rate. The automotive industry is bound to be a major area of significant impact on RFID technology.
Application of automotive parts manufacturing
Auto parts manufacturing technology is complex, covering a wide range of manufacturing processes, covering a variety of processes, the number of parts is as high as 8,000 ~ 15,000; only by manually managing a large number of parts, components and complex, numerous manufacturing processes, often error-prone It is impossible to quickly improve the operational efficiency and effectiveness of each process from the source. Therefore, people use RFID technology to provide a variety of effective management solutions for parts manufacturing and assembly. Doing a good job in parts tracking management can improve the level of logistics management and quality management. The current part tracking is mainly through two methods:
First, the label is attached to the part itself, called a hard link. A typical example is RFID for tracking management of tires. These parts are generally characterized by high value, safety requirements, and confusing parts. RFID can effectively identify and track parts.
The second is to attach the label to the packaging or shipping rack of the part. It is possible to reduce the cost of RFID usage, but it is necessary to maintain a link on the database between the tagged RFID container and the parts in the container. This method is called soft link or soft tracking. The principle of the two methods is the same, except that the label placement position is different. The tire is taken as an example for specific description.
The main production processes for manufacturing tires include: mixing, rubber parts preparation, tire molding, vulcanization, inspection, testing, etc. Each process contains very complicated processes, and at the same time, due to the long product data and large number of products, In the process of production control and product data management, it is inevitable that the data is recorded manually. In addition, it is possible to use the manual method to accurately record millions of tires and related information into the database every year. Therefore, most tire factories There is no detailed database for individual tires, which is not conducive to querying tire information and cannot be scientifically managed during tire manufacturing and use. Therefore, RFID technology is applied to tire production to produce smart tires based on RFID technology.
The staff embeds the RFID tag in the tire forming process. The embedded position is between the carcass ply and the sidewall rubber. After the tire is vulcanized, the label is fixed and sealed in the tire. The smart tire is from the factory and during use. All important data such as production serial number, production date, manufacturer code, and automobile manufacturer's identification code are completely stored in the label chip during the entire life cycle of repair and refurbishment until scrapping.
Intelligent tires based on RFID technology improve the operating efficiency and efficiency of the tire supply chain in many ways:
(1) Using RFID readers to read the label information, the staff can quickly count the number of tires without missing, ensuring the correctness of the input data;
(2) Since each tire has a unique identification code, when the tire fails early, it can be confirmed by reading the label whether the tire is a factory product, and then can be traced from top to bottom to molding, vulcanization, quality inspection, Packaging, warehousing, shipping and other aspects to determine the key links leading to tire failure and find the real reasons, and gradually improve product quality;
In addition, conditional manufacturers can also embed special RFID tags with pressure and temperature sensing. The special tags embedded in the tires can be combined with the tire pressure (temperature) monitoring system to monitor tire pressure and tire temperature at any time. The driver provides real-time data. If the tire pressure is too low, the monitoring system will warn the driver not to drive under low tire pressure, which increases driving safety and improves the difference between smart tires and ordinary tires.
In addition, RFID technology is also widely used in the anti-counterfeiting traceability of automotive parts. The auto parts industry is pretending to be impersonating. Many black-hearted businessmen even sell fake and fake, which not only damages the reputation of the brand, but also hurts the personal safety of consumers.
Application of automobile assembly
When assembling a vehicle, it is mainly necessary to realize the production data and quality monitoring data collected in real time on various production lines of the automobile, and transfer it to material management, production scheduling, quality assurance and other related departments to better realize the supply of raw materials. , production scheduling, sales services, quality monitoring and lifetime quality tracking of the entire vehicle.
Before the application of RFID technology, the main information of the storage body information is the barcode. The advantage of using the barcode recognition method is that the configuration is flexible and the system cost is low. However, since the body information is stored in the PLC (programmable controller) or PMC (production and material control) database, the speed and reliability of the network communication are very high, and high-performance PLC and large-capacity are required. Database and high speed PMC host.
After adopting the RFID system, the electronic tag is generally placed on the skid carrying the car body, and runs with the workpiece from beginning to end, forming a data moving with the car body, becoming a "smart car body" carrying the database in the whole production process. . According to the process and production management needs, the reader/writer can be set at the entrance of the paint shop, the branching of the workpiece stream, and the important process (such as spray booth, drying room, storage area, etc.). The read/write station is mainly composed of a workpiece position detecting switch, a tag read/write device, a communication interface module, and a human-machine interface. The basic process is: after the detection switch detects the vehicle body in-position signal, the read/write device starts to automatically read the data stored in the tag mounted on the slider, and sends the data to the PLC, which is simultaneously displayed on the human-machine interface; It is uploaded to the PMC of the workshop production process monitoring system through PLC for further processing and calculation, so as to realize the tracking of the whole workshop workpiece logistics and production process control.
The use of RFID technology on the production line does not require all read/write devices to communicate with the primary database, so failure to communicate with the primary database will not cause production to stop. After the station, data can also be written to the tag. Therefore, RFID is increasingly used in the vehicle body identification system.
Application in vehicle logistics management
RFID intelligent electronic tags with vehicle information can realize the information management of vehicle logistics and help solve problems in vehicle production, inventory management and sales management.
The vehicle identification code (VIN) is an ID card in the circulation of the vehicle. This identification number can be written into the RFID tag embedded in the car to realize the management of the electronic digital license plate of the car. By reading the vehicle intelligent electronic tag storage information, the accuracy and working efficiency of the vehicle information are greatly improved, and problems in the after-sales service, product tracking, quality traceability, and the like are solved.
We can write the vehicle's order number, frame number, internal car model, certificate number, certificate model, VIN number, engine number, date of manufacture, warranty card number and other important information in the vehicle's smart electronic label. It can support and share data and information with the production management system, the vehicle quality file management system, the vehicle inventory management system, the after-sales service “first-line communication” and the GPS global positioning system, and realize the production and quality inspection of the whole vehicle. Informatization management of a series of links such as storage, after-sales service and maintenance.
The vehicle intelligent electronic tag system is relatively simple to operate, and only needs to be used by a dedicated person to have a handheld device with a wireless communication device, and the relevant scanning is performed on the vehicle, and the scanned information is sent to the database server of the vehicle logistics management system.
Application in the whole process of automobile supply chain
RFID technology is breaking through the limitations of the factory and enabling it to be applied throughout the entire automotive supply chain. We can build a system that tracks the entire process of the vehicle supply chain.
The first stage monitors the vehicle in the assembly shop through reusable tags;
In the second phase, paper-based RFID tags that can be discarded are used to track parts and vehicles and to track and manage vehicles in their distribution centers.
In the third phase, RFID technology is used in the retail sector. RFID tags will be permanently retained in the car and used throughout the life cycle. The information on the RFID tags will include customer information and raw production data.
Application in automotive electronic identification system
The automotive electronic identification system installs an RFID electronic tag for storing vehicle identity data on the inside of the front windshield of the vehicle, and communicates with the electronic license plate high-speed reading and writing equipment disposed on the urban route section, which can be used in the RFID electronic tag. The data is read and written, and the active, non-contact, non-stop network is used to complete the identification and monitoring of the vehicle.
At the same time, in conjunction with the original traffic information collection and traffic management platform, it can meet the requirements of the Ministry of Public Security for “timely monitoring, networked control, active alarm, rapid response, scientific, efficient, and information sharing”, and realizes truly digital, intelligent and refined. Traffic management; fundamentally eliminates the "blind spots" of road traffic management in time and space, expands the monitoring period and monitoring scope of traffic management, can fully improve the intensity of urban traffic management, and improve the compliance of traffic participants. Awareness of law.
In addition, RFID technology is also widely used in RFID intelligent parking management, charging management, intelligent weighing management, RFID car wash management and other application scenarios.