Detailed RFID technology and its new label production process (I)

In the early 1940s, radar improvements and applications led to the development of radio frequency identification (RFID) technology. After a long period of exploration, RFID has played a pivotal role in public safety, manufacturing, and logistics management.

Detailed description of RFID technology and its new label production process:

DRID:

Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology that automatically recognizes target objects and acquires relevant data through spatial coupling (alternating magnetic field or electromagnetic field) to achieve target recognition and data exchange. , identification work without manual intervention.

The basic working principle of the AFID system can be illustrated by Figure 1: The signal to be transmitted by the reader is encoded and loaded on the carrier signal of a certain frequency and sent out by the antenna. The electronic tag entering the working area of the reader receives the pulse signal. The relevant circuit in the chip in the tag demodulates, decodes, decrypts, and then judges the command request, password, authority, and the like. If it is a read command, the control logic circuit reads the relevant information from the memory, encrypts, encodes, modulates and transmits it to the reader through the antenna inside the electronic tag, and the reader demodulates, decodes, and decrypts the received signal. Send to the central processing system for data processing; if it is a write command to modify the information, the internal charge pump caused by the control logic raises the working voltage, provides the content of the erased EEPRQM to be rewritten, if it is judged that the corresponding password and authority do not match , then an error message is returned.

Application range of RFID system:

The era of international Internet of Things is coming. It is reported that RFID technology has been widely used in the European and American markets. With the maturity of RFID technology in the Chinese market and the decline in the price of RFID tags, RFID tags will replace traditional one-dimensional barcodes and two-dimensional codes. If the QR code is an extension of the one-dimensional code label, the birth of RFID is a revolution in the label industry. Its application areas are mainly in the following aspects:

1. Logistics management

Logistics is the largest market application space for RFID, which can greatly improve the efficiency of logistics links and provide technical support for zero inventory. The global retail giant Wal-Mart and Germany Metro promote the application of RFID tags, which have realized the use of RFID technology in supermarkets to achieve product identification, anti-theft, real-time inventory and product life control.

2. Food safety

The food safety issue is a national life and a major event. RFID technology can ensure food safety in all aspects by conducting a full management record of the original planting or breeding process of the food and tracking and reverse tracking the food circulation.

3. Commodity anti-counterfeiting

Commodity anti-counterfeiting can guarantee normal market order and consumer credit, and has huge market space. The use of RFID anti-counterfeiting technology and wireless communication network can achieve quality inspection of goods at any time and any place. At present, it is already in smoke and alcohol. Piloting on medicines and other commodities.

4. Applications in other fields

RFID has a very wide application space, such as traffic management, military management, security, animal breeding and pet management, library management and other fields, have great application prospects.

RFID tag antenna preparation technology:

The core issues affecting RFID promotion are chip technology and cost. RFID electronic tags are mainly composed of a substrate, an antenna and a chip. The antenna layer is the main functional layer, and its purpose is to transmit the maximum energy into and out of the tag chip. Compared with the conventional etching method and the winding method, the direct printing method of the tag antenna greatly saves the cost.