RFID truck frame management application technology

RFID radio frequency identification technology uses radio frequency for non-contact two-way communication to exchange data to achieve the purpose of identification. Compared with the traditional magnetic card, IC card or bar code identification method, RFID has the characteristics of long-distance and non-contact identification, and is highly adaptable to the environment. Through reasonable design, it can work in various harsh environments and has excellent identification. effect. RFID recognition does not require manual intervention, and is suitable for automatic data collection of the system. At the same time, it can identify high-speed moving objects and simultaneously recognize multiple electronic tags, which is quick and convenient. RFID truck frame management application technology uses these advantages of RFID technology for intelligent management.

The RFID reader/writer sends a microwave inquiry signal to the electronic tag through the antenna. The electronic tag is activated by the microwave energy of the reader, and responds after receiving the microwave signal and sends out an echo signal with tag data information. The basic feature of radio frequency identification technology is to use radio technology to identify stationary or moving objects, to achieve the purpose of determining the identity of the object to be identified and extracting characteristic information of the object to be identified. At present, it has been widely used in many fields such as automobile production, transportation control management, industrial automation, warehousing and logistics.

The RFID truck frame management system is a management and control system for Sinotrans's container truck frame based on RFID technology. Based on the successful application experience of RFID in other fields, combined with Sinotrans's own requirements for container truck frame management, it will be automated, advanced, and Based on the principles of stability and scalability, it will realize automatic identification, tracking and monitoring of container truck frames around core business requirements. The core of this system is to install RFID readers and RFID antennas on the front of the container truck, install RFID electronic tags on the frame, and realize the monitoring and management of the frame through the reader's identification of the electronic tags. The RFID electronic tag is installed in the frame near the front of the car, and the appropriate installation position is selected according to the structural characteristics of the different frame. At the same time, the frame is made of metal, which requires metal-resistant electronic tags. In order to ensure that the electronic tag is not damaged during the use, storage and transportation of the frame, the structure of the frame itself is fully utilized to achieve the protection of the electronic tag. For the frame that does not have a protective position, on the premise of taking into account the reading performance, a metal baffle or buffer rubber is installed to form a protective effect on the label.

The electronic label comes with 3M double-sided tape, and according to the material and environment of the attachment surface, the imported double-sided tape with high metal adhesion and high temperature resistance can be selected, which can be directly pasted on the frame, which is convenient to use and reliable in performance. The RFID antenna is installed at the front of the car close to the frame. Because the RFID antenna itself is larger than the electronic tag, it is not easy to find a suitable protective location on the front of the car to install, and in the daily use of the vehicle, collisions will inevitably occur, which may easily cause damage to the equipment installed on the front of the car . In order to avoid such accidental damage as much as possible, this system will adopt an RFID antenna constructed with a thick metal alloy on the back of the frame, which greatly improves its endurance and has a strong adaptability to industrial environments. The UHFRFID reader is the core equipment of this system. The application on container trucks should be able to meet vehicle-level application specifications, including dustproof, waterproof, and vibration-proof adaptability, and can adapt to voltage and current fluctuations. The equipment shell must Sturdy and durable, anti-corrosion, suitable for outdoor environments such as high and low temperature.

The RFID reader can be installed in the cab, connected to the RFID antenna through the radio frequency cable, and realize the acquisition of RFID tag information, so as to realize the supervision of the frame. Before using the system, you need to initialize the electronic label information. According to Sinotranss rules or specifications for frame management, write the unique identification code of the frame into the electronic label, and install the electronic label on the corresponding frame. Complete the establishment of initial data information. In this system, the RFID reader is connected to the vehicle terminal through the serial port, and the data read by the RFID will be uploaded to the vehicle terminal in real time. After the container vehicle is started, the RFID reader starts to work; when the frame with the RFID electronic tag is connected to the front of the car, the electronic tag enters the recognition range of the reader, and the data read by the reader is fed back to the vehicle Terminal, the vehicle-mounted terminal sends the data to the back-end database after processing to complete the "carriage task" of the frame.

After the vehicle frame completes the "carriage task", the RFID reader can load the read tag information to the vehicle terminal at intervals according to the system requirements, and update the working status of the frame in real time. After the frame completes the task, it is transferred away, and the RFID electronic tag on the frame will leave the reading range of the RFID reader. At this time, the RFID reader cannot detect the existence of the electronic tag, and the on-board terminal cannot receive and read or write. The tag information returned by the driver indicates that the frame has completed the "get off" operation. A complete work cycle of the frame ends, and the system updates and saves this information in real time to achieve the purpose of real-time supervision of the frame. RFID readers need to have a wide power adjustment range to ensure that other frame electronic tags will not be misread by adjusting the power without affecting the reading performance.