Application of RFID Technology in Automotive Related Fields

- Jun 12, 2018-

On December 29, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Management Committee approved the issuance of six national recommended standards for electronic identification of motor vehicles, which was formally implemented on July 1, 2018. The release of this standard is bound to further promote the application of RFID technology in the automotive-related fields. Today, we come to inventory the application scenarios and technologies of RFID technology in the automotive-related fields.

Application of Auto Parts Manufacturing

Automotive parts manufacturing technology is complex, involves a wide range of manufacturing processes, covers a variety of processes, the number of parts up to 8000 ~ 15000; only the large number of manual management of the zero, parts and complex, numerous manufacturing processes, often error-prone and 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 vehicle assembly. Doing a good job of component tracking management can improve the level of logistics management and quality management. Now part tracking is mainly through two methods:

One is that the label is attached to the part itself, called a hard link. A typical example is RFID tracking management for tires. Such components generally have high-value, safety requirements and confusing features between parts. RFID can effectively identify and track components.

The second is to attach the label to the part's packaging or shipping rack. The use of RFID can be reduced, but it is necessary to maintain a link on the database between the tagged RFID container and parts in the container. This method is called soft link or soft tracking. The principle of these two methods is the same, but the placement of the labels is different. The tires will be used as an example.

The main production processes for manufacturing tires include: processes such as smelting, plastic parts preparation, tire molding, vulcanization, inspection, testing, etc. Each process contains a very complicated process, and due to the long product data and large quantity of products, In the process of production control and product data management, manual data records are used, making mistakes inevitable; in addition, manual methods that can accurately record millions of tires and related information every year into the database may also be mistakes. Therefore, most tire factories There is no detailed database for individual tires, which is not conducive to querying tire information and cannot be managed scientifically during tire manufacturing and use. Therefore, RFID technology is applied to the production of tires to produce smart tires based on RFID technology.

The worker embeds the RFID tag in the tire molding process. The embedding position is between the carcass ply and the sidewall rubber. After the tire embryo undergoes the vulcanization process, the label is fixed and sealed inside the tire. This intelligent tire is shipped from the factory and used During the entire life cycle of maintenance and refurbishment until end-of-life, all important data, such as production serial numbers, production dates, manufacturer codes, vehicle manufacturer identification codes, etc., are all stored in the chip of the tag.

RFID-based smart tires improve the efficiency and effectiveness of tire supply chains in many ways:

(1) Using RFID readers to read the tag information, the staff can quickly count the number of tires and ensure the correctness of the input data.

(2) Since each tire has a unique identification code, when the tire has failed early, it can be confirmed by reading the label whether the tire is a factory product, and can be traced from the top down to molding, vulcanization, quality inspection, Packaging, warehousing, shipping and other links to determine the key links that lead to tire failure and find the real reasons, and then gradually improve product quality;

In addition, conditional manufacturers can also embed special RFID tags with pressure and temperature sensing capabilities. Special tags embedded in the tires can be combined with tire pressure (temperature) monitoring systems to monitor tire pressure and tire temperature at any time, so that they can be monitored at any time. Drivers provide real-time data. If the tire pressure is too low, the monitoring system will warn the driver not to drive under dangerous conditions with low tire pressure, thereby increasing driving safety and improving the difference between smart tires and ordinary tires.

In addition, RFID technology is also widely used in anti-counterfeiting traceability of automotive parts. Auto counterfeiting industry is prevalent and many black-hearted businessmen even sell fakes and fakes. This not only damages the reputation of brand owners, but also hurts the personal safety of consumers.

Application of vehicle assembly link

When assembling an automobile vehicle, it is mainly necessary to realize the real-time collection of production data and quality monitoring data on all types of 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 control, and lifelong quality tracking of the vehicle.

Before the application of RFID technology, the main body of information stored in the car body is the bar code. The advantage of adopting the bar code identification mode is that the configuration is flexible and the system cost is low. However, because body information is stored in a PLC (Programmable Controller) or PMC (Production and Material Control) database, the requirements for the speed, reliability, and the like of the network communication are high, and high-performance PLCs and large-capacity are required. Database and high speed PMC host.

After adopting the RFID system, the electronic tag is generally placed on a skid carrying a car body, and runs along with the workpiece from beginning to end, forming a data that moves with the car body, and becomes a “smart car body” that carries the database with the entire production process. . According to the process and production management requirements, readers/writers can be installed at the entrance and exit of the painting shop, at the branch of the workpiece logistics, and at the entrance of important processes (such as spray booths, drying rooms, storage areas, etc.). The read/write station is mainly composed of a workpiece position detection 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 arrival signal, the read/write device starts to automatically read the data stored in the tag mounted on the skid, and sends the data to the PLC and is displayed on the man-machine interface. Through the PLC upload to the workshop production process monitoring system PMC for further processing and calculations, so as to achieve the entire workshop parts logistics tracking and production process control.

Using 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 passing through the station, data can also be written to the tag. Therefore, RFID is increasingly used in car body recognition systems.

After adopting the RFID system, the electronic tag is generally placed on a skid carrying a car body, and runs along with the workpiece from beginning to end, forming a data that moves with the car body, and becomes a “smart car body” that carries the database with the entire production process. . According to the process and production management requirements, readers/writers can be installed at the entrance and exit of the painting shop, at the branch of the workpiece logistics, and at the entrance of important processes (such as spray booths, drying rooms, storage areas, etc.). The read/write station is mainly composed of a workpiece position detection 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 arrival signal, the read/write device starts to automatically read the data stored in the tag mounted on the skid, and sends the data to the PLC and is displayed on the man-machine interface. Through the PLC upload to the workshop production process monitoring system PMC for further processing and calculations, so as to achieve the entire workshop parts logistics tracking and production process control.

Using 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 passing through the station, data can also be written to the tag. Therefore, RFID is increasingly used in car body recognition systems.

Application in the whole process of automobile supply chain

RFID technology is breaking through the limitations in the factory and implementing its application in the entire process of the automotive supply chain. We can establish a system that tracks the entire process of the vehicle supply chain.

The first stage monitors the vehicle in the assembly shop through the reuse of tags;

In the second phase, disposable RFID-enabled paper tags were used to track parts and vehicles, and vehicle tracking was implemented at its distribution center.

In the third phase, RFID technology is used in the retail sector. The 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 of Automotive Electronic Marking System

The automotive electronic signage system is to install an RFID electronic tag on the inside of the front windshield of the vehicle for storing the vehicle's identification data, and to communicate with the electronic license plate high-speed reading and writing equipment laid on the road cross section of the city, which can be used in RFID electronic labels. The data is read and written, and active, non-contact, and non-parking networks are used to complete vehicle identification and monitoring.

At the same time, it can be combined with the existing traffic information collection and traffic management platform to meet the Ministry of Public Security's request for “timely monitoring, networked deployment, active alarming, rapid response, scientific, efficient, and information sharing”, and it is truly digital, intelligent, and exquisite. The modernization of traffic management fundamentally eliminates the “blind spots” of road traffic management in time and space, and expands the monitoring period and monitoring scope of traffic management, which can fully increase the strength of urban traffic management and improve the compliance of traffic participants. Law-abiding awareness.

In addition, RFID technology is also widely used in RFID smart parking management, charging management, smart weighing management, RFID car wash management and other application scenarios.