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Talk about the application direction and seven characteristics of RFID technology

what is RFID

rfid is the abbreviation of radiofrequencyidentification, that is, radio frequency identification. It is often called inductive electronic chip or proximity card, inductive card, contactless card, electronic label, electronic bar code, etc

rfid system composition:

tag: it is composed of coupling elements and chips. Each RFID tag has a unique electronic code, which is attached to the object to identify the target object, commonly known as electronic tag or smart tag; Reader/reader: a device that reads (and sometimes writes) label information, which can be designed as handheld or fixed

antenna: transmit RF signals between RFID tags and readers

a complete system also needs to have: data transmission and processing system

rfid electronic tag: active tag, passive tag, semi active semi passive tag

rfid working principle: after the tag enters the magnetic field, it receives the RF signal sent by the reader and sends the product information stored in the chip (pass resolution ivetag, passive tag or passive tag) with the energy obtained by the induced current, or actively sends a signal of a certain frequency (activetag, active tag or active tag); After reading and decoding the information, the interpreter will send it to the central information system for relevant data processing

rfid Technology: RFID radio frequency identification is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not need human intervention, and it can work in various harsh environments. RFID technology can identify high-speed moving objects and multiple electronic tags at the same time, which is fast and convenient to operate

Application of RFID Technology:

short range RFID products are not afraid of harsh environments such as oil stains and dust pollution. They can replace bar codes in such environments, such as tracking objects on factory assembly lines

long distance RFID products are mostly used in transportation, and the recognition distance can reach tens of meters, such as automatic charging or vehicle identification

1. In the retail industry, the application of bar code technology makes tens of thousands of commodity types, prices, places of origin, batches, shelves, inventory, sales and other links managed in an orderly manner

2. Automatic vehicle identification technology is adopted to avoid the phenomenon of vehicles queuing for customs clearance in toll places such as roads, bridges and parking lots, and reduce the waste of time, thus greatly improving the efficiency of transportation and the capacity of transportation facilities

3. On the automatic production line, all links of a metallographic microscope imported from Germany in the whole product production process are under strict monitoring and management

4. In the harsh environment of dust, pollution, cold, hot and so on, the application of long-distance radio frequency identification technology has improved the inconvenience that truck drivers have to get off and go through formalities

5. In the operation management of buses, the automatic identification system accurately records the arrival and departure time of vehicles at stations along the line, providing real-time and reliable information for vehicle scheduling and whole process operation management

rfid electronic tag technology is widely used. At present, it has typical applications: Animal chip, access control, air parcel identification, document tracking management, parcel tracking, identification of physical properties similar to vulcanized rubber without vulcanization, animal husbandry, logistics management, mobile commerce, product anti-counterfeiting, sports timing, ticket management, car chip anti-theft devices, parking lot control, production line automation, material management, etc

seven characteristics of RFID in electronic tags

compared with traditional bar code recognition technology, RFID has the following advantages:

1 Fast scan

only one barcode can be scanned at a time; RFID in life, the recognizer can recognize and read several RFID tags at the same time

2. Miniaturization and diversification of shape

RFID is not limited by size and shape in reading, and does not need to match the fixed size and printing quality of paper for reading accuracy. In addition, RFID tags can be miniaturized and diversified to apply to different products

3. Anti pollution ability and durability

the carrier of traditional barcode is paper, so it is easy to be polluted, but RFID has strong resistance to substances such as water, oil and chemicals. In addition, because the barcode is attached to the plastic bag or outer packaging carton, it is particularly vulnerable to damage; RFID volume label stores data in the chip, so it can be free from contamination

4. Reusable

today's bar codes cannot be changed after printing. RFID tags can repeatedly add, modify and delete the data stored in RFID labels to facilitate the update of information

5. Penetrability and barrier free reading

when covered, RFID can penetrate non-metallic or non transparent materials such as paper, wood and plastic, and can conduct penetrating communication. The bar code scanner can read bar codes only when it is close and there is no object blocking it

6. Large memory capacity of data

the capacity of one-dimensional barcode is 50bytes, the maximum capacity of two-dimensional barcode can store 2 to 3000 characters, and the maximum capacity of RFID is megabytes. With the development of memory carrier, the data capacity also has the trend of expanding. In the future, the amount of information that items need to carry will be larger and larger, and the demand for the expansion capacity of volume labels will also increase accordingly

7. Security

because RFID carries electronic information, its data content can be protected by password, so that its content is not easy to be forged and altered

in recent years, RFID has attracted much attention because of its long-distance reading, high storage capacity and other characteristics. It can not only help an enterprise greatly improve the efficiency of goods and information management, but also connect sales enterprises and manufacturing enterprises, so as to receive feedback information more accurately, control demand information, and optimize the whole supply chain

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