At present, the main technical directions involved in RFID are rapidly developing, but there are still bottlenecks in all aspects. From the current point of view, the following problems mainly exist.
For the technical standards of RFID, it is difficult to be unified at the international level, which makes the product development and application positioning more chaotic. The mainstream technical standards are trying to continuously strengthen their influence in the promotion. Especially, the future promotion of RFID technology in China has appeared. The ISO/IEC, EPC Global, UID, AIM-global, and IP-X organizations are responsible for or almost the same time leaders in Beijing and China's RFID field are involved in the situation, trying to strengthen their own RFID technology field through China's joining. International leadership. For China, it is also actively pursuing its own technical standards to protect its own technical, economic and security interests. Therefore, the unification of RFID technology standards has a problem of promoting bottlenecks.
For electronic tags, high storage capacity means multi-function, and low power consumption means that the label is miniaturized, which directly limits the cost of the electronic tag. On the other hand, unified and widely used means that the number of electronic tags is huge. When the number of electronic tags in the application system is large enough, the cost of a single electronic tag can be quickly reduced. According to the general price, when the price of a single electronic label is about 5 cents, the global RFID electronic label market will have a blowout, and a large number of applications will be quickly applied to various fields. At present, the price of electronic tags is still relatively high, and the electronic tags with simple functions are still in the price range of tens of cents. The technical standards restrict the number of electronic tags in the system, and it is difficult to achieve wide compatibility. Declining, semiconductor circuit performance also has an impact, different manufacturers of chips use different standards, but also affect the price.
For the data interference problem in space, it can be overcome by technical means, but often at the expense of performance, there is still a difference between the actual situation and the establishment of the data model, and even in some occasions it is difficult to complete the identification, system capacity When the value exceeds a certain value, the signal interference increases by an order of magnitude, causing the system to collapse. The large-capacity identification in a narrow space with high speed is difficult to achieve.
For the data collision problem of electronic tags, there are always some shortcomings in the existing algorithms. At present, many organizations actively study efficient algorithms to deal with the data collision problem of electronic tags. Such problems have become an important research hotspot of current RFID technology, anti-collision. Both deterministic and non-deterministic algorithms have to be further broken.
For the data security problem of the RFID system, the physical implementation and the cryptographic method are solved in the specific implementation. Encryption technology has requirements for the cost and power consumption of electronic tags. The more secure data encryption algorithm means that it needs to occupy a larger space for electronic tag storage. How to find the best balance between cost and security performance is also necessary. Breakthrough problem.
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