Dongguan Chengxinxing Smart Card Co.,Ltd
Add: No.25, Jinfu Road, Jinxia Community, Chang'an Town, Dongguan, China
Nicole Lai (Export Manager)
Phone: +8613450794559 (Whatspp)
RFID technology is rapidly maturing, RFID Reader-Writer and many countries are actively promoting it as an important industry. At present, China's passive ultra-high frequency development is still in its infancy, need to break through the core technology, RFID Reader-Writer not only need to improve the business model needs innovation, in order to passive ultra-high frequency market development, must effectively solve the core problem.
The reader will encode the information to be encoded and load it on a 13.56 MHz RF carrier, send it out through the antenna, and form a stable electromagnetic field to provide energy for the RFID tag. When the RFID tag enters the reader's work area, the card antenna receives the signal and the energy, and the tag is activated. RFID Reader-Writer The tag chip makes a judgment on this signal, such as valid signaling, RFID Reader-Writer reads the relevant information from the memory and transmits it through the card antenna. RFID Reader-Writer Antenna receives this signal, FM1702SL internal receiver to detect and demodulate the signal and according to the register settings for processing, and then sent to the host system. The host system to determine whether the label is legitimate, make the appropriate treatment, RFID Reader-Writer followed by issuing instructions to the reader.
The external power supply is 220 V ac and is regulated by 5 V at the switching power supply to supply power to the circuit board. As the C8051F310 single-chip supply voltage of 2.7 V ~ 3.6V, RF read-write chip FM1702SL supply voltage of 3 V ~ 5 V, so with an AMS1117 regulator, the voltage stabilized at 3.3 V power supply. RS232 through SP3232 level conversion, and C8051F310 connected, C8051F310 microcontroller through the SPI port and FM1702SL connected to the read and write chips to control. FM1702SL and then connected to the antenna to achieve the signal to send and receive.
RFID (Radio Frequency Identification) is a radio frequency identification technology, which is a kind of automatic identification technology. Using a dedicated RFID reader and a special RFID tag that can be attached to the target, using the frequency signal to transfer the information from the tag to the reader. Compared with the traditional bar code, magnetic card and other automatic identification technology, RFID technology in many areas have significant advantages, such as environmental adaptability, working distance, RFID Reader-Writer confidentiality, and its intelligence. In addition, it can also identify multiple high-speed moving objects.
RFID technology is rapidly maturing, and many countries are actively promoting it as an important industry. At present, China's passive ultra-high frequency development is still in its infancy, need to break through the core technology, not only need to improve the business model needs innovation, RFID Reader-Writer in order to passive ultra-high frequency market development, must effectively solve the core problem. This paper provides a feasible solution for the realization of RF communication system.
Rfid reader through the antenna and RFID tags for wireless communication, RFID Reader-Writer you can achieve the label identification code and memory data read or write operation. A typical RFID reader includes an RFID radio module (transmitter and receiver), a control unit, RFID Reader-Writer and a reader antenna.
In the radio frequency identification system, electronic tags are also known as radio frequency tags, transponders, data carriers; readers are also known as read devices, scanners, RFID Reader-Writer communicators, readers (depending on whether the electronic tags can wirelessly rewrite the data). RFID Reader-Writer Between the electronic tag and the reader through the coupling element to achieve the RF signal space (no contact) coupling, RFID Reader-Writer in the coupling channel, according to the timing relationship, to achieve the transfer, data exchange.