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)
China's RFID industry after more than more than 10 years of development, RFID Tag now the technology has been more mature, especially in the past two years, RFID Tag in the country actively encourage and vigorously promote the healthy development of the industry in the background, with the various factors on the continuous promotion of IoT, RFID Tag it has maintained a steady rise in the development trend.
RFID frequency standard formulation, the industry also reached a consensus. RFID Tag At present, the frequency of international comparison is general. 56MHz, the high frequency RFID technology of 56MHz because of the stable performance, reasonable price, its reading range and the actual application range of distance, so in the public transport card, mobile phone payment has been widely used, RFID Tag especially in Korea, Japan and other places.
RFID tag is often accompanied by the use of metal environment, RFID Tag when the RFID tag near the metal, because the metal has a strong reflection of electromagnetic waves, it will be accompanied by a weakening of the signal, reading card distance will become more close, RFID Tag serious interference will appear to read card failure phenomenon. The current general solution is to stick a layer of magnetic absorbing material on the back of the electronic label.
Wave absorbing material in electronic equipment noise reduction, absorbing waves and EMC and other aspects of the use of more, RFID Tag and experts on its interpretation of the principle of work has also done a lot of models, forming a lot of theoretical knowledge, but the disadvantage is that these theories are more complex, RFID Tag some of the readers in the field is difficult to understand.
An RFID system is an electronic tag or contactless smart card (such as a smart phone with a swipe card) that is placed on an object that is identified, a device that sends instructions to an electronic tag and collects feedback information from an electronic tag, RFID Tag which is also known as an RFID reader or a reader-writer. As shown in Figure 1, in order for other devices to be able to display or use the data, RFID Tag it is generally possible to have an external interface with RS232 protocol on the reader so that information can be communicated with the external device.
Because it is a passive electronic tag, the energy required by the chip and memory work in the electronic tag is provided by the reader, RFID Tag the communication between the reader and the electronic tag is realized by the electromagnetic coupling principle, the energy of the electronic tag is generated by the electromagnetic coupling of the reader coil antenna.
RFID tag read card distance is not only related to itself, at the same time with the environment has a great relationship. When using an inductively coupled RF identification system, it is often asked that the antenna of the reader or the RFID tag is directly mounted on the metal surface. However, RFID Tag it is impossible to install the antennas directly on the surface of the metal.
Because the antenna's magnetic flux passes through the metal surface, RFID Tag it produces induction vortices, according to Lenz, eddy currents can be applied to the antenna field, and the magnetic field on the metal surface can be rapidly attenuated, so that the reading distance between the reader and the electronic tag will be seriously affected, or even misread or read failure may occur. RFID Tag The results are the same regardless of the magnetic field produced by the coils installed on the metal surface or from the outside to the field of the metal plate (the electronic label on the metal surface).