RFID Technology in Internet of Things System


Radio Frequency Identification (RFID) is a non-contact automatic identification technology. The specific working principle is as follows: when the object with electronic tag approaches the microwave antenna, the reader is controlled to send out microwave inquiry signal. After receiving the query signal from the microwave antenna, the electronic tag installed on the surface of the object reflects the data information in the tag back to the microwave antenna according to the command requirements in the query signal.

When the microwave antenna receives the microwave synthetic signal reflected by the tag, the identification code and other information in the tag can be separated from the microprocessor inside the reader. As the feature data of the object, these recognition information is transmitted to the control computer for further processing, thus completing the application of information query, statistics and management related to the object. The whole identification work does not need manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and multiple tags at the same time, and the reader can determine whether the RFID tags are read repeatedly.

RFID system is generally composed of three parts: reader, transponder (tag) and application system. It transmits information between response media and inquiry media by wave. A reader, usually a reading (and sometimes writing) device with antenna and chip decoder, can be designed as a hand-held or fixed device. The reader can read and identify the electronic data stored in the tag without contact, thus achieving the purpose of automatic identification. Usually the reader is connected to the computer, and the label information read is transmitted to the computer for further processing.

Application systems are generally wired or wireless management systems supported by computers. Depending on the application requirements, the background application system is not necessary for real-time intelligent controller. Tags, mainly radio frequency tags, contain antennas at the response end, which form the so-called "radar transceiver" in the form of cards and tags.

The whole EPC network operation relies on the intervention of RFID system and network application system to effectively disseminate product information. Readers installed in different demand chain environments can read product data stored in labels. Therefore, supply chain data can be checked, updated or exchanged in time through the network.

Application of EPC/RFID Technology
The application of Internet of Things technology can make e-commerce more powerful. It enables consumers to find any item of goods in any store on the Internet and make their choice more handy. In the field of logistics, RFID tags can be applied to automatic warehousing and inventory management, product logistics tracking, supply chain automation management, product assembly and production management, product anti-counterfeiting and other aspects.

Radio Frequency Identification (RFID) devices, infrared sensors, global positioning systems and other devices combined with the Internet to form a huge network, so that all items can be remote sensing and control, and connected with the existing network, forming a more intelligent production and life system.

Development Trend of Internet of Things Industry
Under the background of vigorously promoting the integration of industrialization and informatization, the Internet of Things will be a more realistic breakthrough in the informatization process of industry and even more industries. Moreover, RFID technology is applied in many fields and industries.

In these pioneering successful cases, the information of goods has been automatically collected and online, management efficiency has been greatly improved, and some of the dreams of the Internet of Things have been partially realized. Therefore, the embryonic form of the Internet of Things is like the early form of the Internet LAN. Although its role is limited, the broad prospects of the Internet of Things are beyond doubt.

In recent years, the implementation of smart home is actually to control the electrical communication in the home through the network. It can be imagined that the Internet of Things has developed to a certain stage, home appliances can be connected to the external network, through sensors to convey electrical signals. The manufacturer in the factory can know the use of your household appliances, maybe before you know the failure of your household appliances. One day, a repairman came to tell you that there was a problem with the air conditioning in your home. You were surprised to believe it.