Laser anti-counterfeiting, forgery fluorescence, magnetic security, temperature change security, special plate making and printing is commonly used anti-counterfeiting techniques, these technologies over time to some extent play a security role, but so far the security technology is not perfect, can not act effectively to stop counterfeiting.
HC screen Special Indian network RFID Exploration and application of anti-counterfeiting technology, not only bring direct economic benefits for enterprises, will also state the relevant management and effective supervision of corporate production and operation, combat and eradicate illicit production, safeguarding social order and stability, sustained development of effective technical support. At the same time help to improve management efficiency, reduce operating costs.
Wireless RFID Technology RFID (RadioFrequencyIdentification) is an automatic identification technology, which by way of non-contact radio frequency two-way data Communicate Be identified on the target. RFID used in anti-counterfeiting is a very small chip attached to the items required for security, using radio frequency technology to deliver chips to store data into the system to identify the terminal, is a hotspot. It can be completed without direct contact with the information input and processing, and easy to operate. Can be widely used in production, logistics, medical, Transportation And asset management needs of data collection and processing applications.
1.RFID system composition and theory
1.1 system components A basic RFID system generally identified by the object information stored in the chip that RFID (Tag), for writing and reading the data tag reader (Reader, also known as the read head) and the antenna. In order to achieve the tag data processing, computer system needs to have the corresponding support.
(1) tag (Tag, or radio frequency card): RFID is the core component, which is installed in the objects to be identified, the storage of electronic data in a certain format, that detailed information about this object. Tags similar to bar code technology in bar code symbols, but the difference is to be able to automatic or semi-automatic way to launch the stored information. Tag from the tag antenna and tag chip. Tag is a wireless transceiver chip functionality and storage capabilities of the single-chip system (S0C), which stores the encoded data in the agreed format, is used to uniquely identify the attached objects. It is the carrier of radio frequency identification system data, and encrypted communication with the intelligent reading and writing ability.
(2) readers: it can be automatically read by the non-contact tag stored electronic data is the RFID system of information control and processing center. RFID reader and the communication protocol between each other mutual transfer of information. When adhesion of objects with electronic tags read by its scope, the label launched on radio waves, and then sent back to their own label of objects stored information, a non-contact throughout the process.
(3) Antenna (Antenna): in the electronic tag and reader radio frequency signals between the transfer. Reader connected to the antenna frame made form of access to items placed in the tested population, which on the one hand to the passive RFID tags emit radio signals to provide electrical energy to activate the electronic tags; the other hand, to receive e-label issue information. In each electronic label has its own micro-antenna, and readers used to communicate.
1.2RFID system works
RFID system, see Figure 1 Schematic diagram. Commonly placed in the object tag, reader antenna sends out a certain frequency of radio frequency signal; when the electronic tag receives radio waves into the reader coverage, its micro-antenna induced current, the electronic tag access to energy is activated to send to the reader identify the required data and other information (electronic tag from the receiver to demodulate the RF pulse in the command sent to the control logic, control logic to receive instructions to complete store, send data or other operations); reader receives the tag from the carrier signal, the signal demodulation and decoding sent to the host computer for processing; computer system according to logical judge the legitimacy of the label, and make the appropriate settings for different treatment and control, an order signal.