How does RFID reader work?
RFID technology is the wireless communication technology that uses radio frequency to communicate with non-contact. Automatically identify target object and obtain relevant information data.
Base on the above characteristics, RFID technology has widely used all over the world already. Mainly there are products anti-counterfeiting; transportation; automatic control; industrial production, Identity Recognition; warehouse management; security management; medical treatment and hygiene; animal husbandry management; file management of books and national defense military; and many other applications.
The radio frequency identification system is generally composed of reader, RFID tag, antenna and host.
The process of the RFID system is not complicated. The host sends user commands through the data transmission channel of the reader. The reader receives the command, codes and modulates the signal, and sends it out in a certain area through the transmitting antenna. Label after entering the magnetic field, receives the radio frequency signal that the reader transmitted. The induced current gain energy, send/ storage complete data, or other operations. The reader receives the number of data returned by the electronic tag through the receiving antenna, decodes and demodulates. And sends the processed data to the host when necessary.
How many RFID readers do you know?
The RFID reader as the most important part of the RFID system. It’s performance will directly affect the pros and cons of RFID system work. At present, RFID reader on the market can divided into 125K, 13.56M, 915M, and 2.4G according to the frequency band. According to the distance, they can be divided into close range, middle range, and long range.
- 125K RFID reader: The lowest cost and read-only. The distance is generally less than 10cm, can also done in 1 meter. Application areas: low-cost access control, attendance, parking lots and other industries.
- 13.56Mhz RFID reader: Read and write, distance between 10-150cm. It is divided into ISO14443A, ISO14443B and ISO15693 three kinds of protocols. 2 protocols of ISO14443 belong to close range reader within 10cm. ISO15693 belongs to medium distance reader, read and write distance from 0-150cm.
- 915M UHF RFID reader: mainly for the middle distance, the general distance within 10 meters. It is divided into 18000-6B and 6C two kinds of protocols, the price of this type reader is slightly higher.
Applications: High-end industries such as non-stop charging, automatic entry attendance statistics, etc.
- 2.4G reader: The power self-carrying tag can transmit signals at the same time. The anti-interference ability is strong. The reading distance is generally between several tens to several kilometers.
Applications: Vehicle management; underground personnel positioning; and monitoring of important items in logistics.
Shenzhen Chuangxinjia RFID Company can help you!
The key to RFID selection is stable performance and easy to use. According to the actual requirements of the interface requirements (USB, RS232, RS485, and RJ45 network ports). Software development needs and actual installation and other different needs. Scientific research companies generally use RS232 or USB interface. And the project construction will use RS484 and RJ45 interface. All of these types of readers are available in Shenzhen Chuangxinjia, which can meet the needs of all walks of life.