Facts have proved that the emergence of the Internet of Things has broken the bottleneck of isolated and unconnected objects in the past, and people have established a closer relationship with people, things and things, and between people and things. From the perspective of the Internet of Things, through the adoption of innovative industry-wide integrated solutions for the Internet of Things, the perfect interaction between people and things will be realized, and the integration of people and the material world will be promoted, making everything more intelligent, efficient and convenient. The Internet of Things will become the third wave of the world's information industry. So, as the core technology of the Internet of Things, RFID has some applications?
First, the introduction of RFID technology
Radio Frequency Technology (RFID) is one of the world's leading automatic identification technologies. RFID radio frequency identification is a non-contact automatic identification technology. It automatically recognizes target objects and acquires relevant data through radio frequency signals. The identification work requires no manual intervention. Can work in a variety of harsh environments. RFID technology can recognize high-speed moving objects and recognize multiple labels at the same time, which is quick and easy to operate.
RFID is a breakthrough technology: "First, it can identify a single very specific object; Second, it uses radio frequency, it can read data through external materials; Third, it can recognize multiple objects at the same time. In addition, the amount of information stored is also very large. Currently, the technology is widely used in the following fields, such as identification, anti-counterfeiting, large-scale equipment fixed asset management, drug logistics identification, archives, vehicle management and many other fields.
The most basic RFID system consists of three parts:
A, label (has, passive): consists of coupling elements and chips, each label has a unique electronic code, attached to the object to identify the target object;
B. Reader: A device that reads (can write) tag information;
C. Antenna: Transmits RF signals between the tag and the reader.
Second, the application range of RFID systems
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. As shown in FIG. 2, the RFID electronic tag is mainly composed of a substrate, an antenna and a chip. The antenna layer is a main functional layer, and the 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.
RFID tags are gradually being applied in various fields due to their unique advantages. People are committed to research and solve the shortcomings of traditional preparation methods. Inkjet printing, as a new technology of tag antenna, relies on the advantages of low cost, good conductivity, no pollution and easy control of antenna patterns, which will make RFID technology more widely used.