Radio Frequency Identification (RFID) technology is an automatic identification technology that acquires relevant data of an object through a radio frequency signal and identifies the object. RFID technology does not need to be in direct contact with the identified object, that is, the information can be input...

Radio Frequency Identification (RFID) technology is an automatic identification technology that acquires relevant data of an object through a radio frequency signal and identifies the object. RFID technology does not need to be in direct contact with the identified object, which can complete the input and processing of information, and can collect and process information quickly, in real time and accurately. It is one of the 10 major intelligent technologies in the 21st century.

RFID uses an electronic tag to mark an object. The electronic tag contains an electronic chip and an antenna. The electronic chip is used to store data of the object, and the antenna is used to transmit and receive radio waves. The antenna of the electronic tag transmits the data of the object to a nearby RFID reader by radio waves, and the RFID reader collects and processes the received data. RFID can work in a variety of harsh environments without manual intervention, can identify high-speed moving objects, can be remotely read, and can identify multiple targets at the same time. Compared with traditional bar code recognition, RFID has great advantages. Its advantages and characteristics are as follows:

1. RFID tags are highly secure

The bar code is composed of parallel lines and different lines and intervals. The bar code is easy to manufacture and simple to operate, but it also has the disadvantages of easy imitation and poor information confidentiality. The electronic chip used in the RFID tag stores information, and the data can be password protected by coding, and the content thereof is not easily forged and changed.

2. Large RFID tag capacity

The capacity of the one-dimensional bar code is limited. Although the capacity of the two-dimensional bar code is much larger than that of the one-dimensional bar code, the maximum capacity can only store 3,000 characters. The capacity of RFID tags can be several dozen times the capacity of two-dimensional bar code. With the development of memory carriers, the capacity of data will become larger and larger, realizing "one thing and one code", satisfying the continuous increase of information flow and information. The need to increase processing speed.

3. RFID can identify multiple tags at the same time

The bar code only has one bar code at a time to be scanned, and the bar code is required to be closer to the collector. Radio frequency identification uses radio waves for data exchange. RFID readers can simultaneously identify multiple RFID tags at a distance and process and transmit information through a computer network.

4. RFID tag has strong anti-fouling ability

The traditional bar code carrier is paper, which is attached to a plastic bag or outer case and is particularly susceptible to breakage. Bar code uses optical recognition technology. If the carrier of the barcode is contaminated or damaged, it will affect the correct identification of the information of the object. RFID uses electronic chips to store information, which can be protected from external environment.

5. RFID is the cornerstone of the Internet of Things

Barcodes can't be changed when printed. RFID uses electronic chips to store information, and can record any information of the item at any time, and can easily add, change and delete information. Through the computer network, RFID can make the manufacturing enterprise and the sales enterprise realize the interconnection, keep abreast of the real-time information of the articles in the process of production, transportation and sales, realize the transparent management of the articles, and realize the “Internet of Things” in the true meaning.