RFID technology is one of the wireless smart home communication technologies. RFID technology is radio frequency technology, also known as wireless radio frequency identification technology. It is widely used in the smart home field. This article is a small series for everyone to popularize the relevant knowledge of RFID radio frequency technology.
Smart home wireless technology—RFID radio frequency technology knowledge
1, RFID technology concept
RFID technology is radio frequency identification technology, which can identify specific targets and read and write related data of specific targets through radio signals without establishing mechanical or optical contact between the identification system and specific targets.
The RFID technology uses a dedicated RFID reader and a dedicated RFID tag that can be attached to the target, and uses the frequency signal to transmit the information in the RFID tag to the RFID reader.
2, the basic structure of RFID technology
The basic structure of RFID technology consists of transponders, readers, and application software systems.
Transponder: It is composed of an antenna, a coupling element and a chip. In general, labels are used as transponders. The label is attached to an object to identify the target object. Each label has a unique electronic code.
Reader: Like the transponder, it consists of an antenna, a coupling element and a chip. The reader is a device for reading and writing tag information. Commonly used are handheld RFID readers and stationary readers.
Application software system: It is an application layer software and is mainly used to further process the collected data and use it for people.
3, RFID technology core
RFID technology is a non-contact automatic identification technology. It automatically recognizes target objects and obtains relevant data through radio frequency signals. The recognition process is performed automatically. It does not require manual intervention and is not affected by the environment. It can work in various harsh environments. RFID technology can identify high-speed moving objects and can identify multiple labels at the same time. The operation is quick and easy.
Compared with bar codes, RFID electronic tags are a breakthrough technology. First, they do not recognize a single type of object intelligently like a barcode, but can identify a single, very specific object. Second, electronic tags use radio frequency radio frequencies and can penetrate External materials are used to read data, and bar codes must rely on lasers to read information. Third, multiple objects can be identified at the same time. Bar codes can only be identified one by one. In addition, the amount of stored information is also very large.
The RFID radio technology is introduced here first. If you need to understand more about the characteristics of RFID technology and its working principle, please disassemble it below.
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