The development trend of rfid tags
There are many development trends of electronic tags to meet different application needs. Taking the commercial application of electronic tags as an example, since the prices of some products are relatively low, in order to not increase the cost of the goods too much, the price of electronic tags is required to be as low as possible. Taking the Internet of Things as an example, the Internet of Things wants labels to have not only the function of identification, but also the function of perception. In general, electronic tags have the following development trends.
Due to the limitation of practical applications, the volume of electronic tags is generally required to be smaller than that of marked articles. In this way, very small items and other special applications require smaller and easier to use labels. At present, the smallest RFID chip with a built-in antenna is only about 0.1mm thick, and electronic tags can be embedded in banknotes.
In the long run, the market for electronic tags (especially UHF long-distance electronic tags) will gradually mature in the next few years, becoming a market with vast prospects and huge capacity after mobile phones, ID cards, and bus cards. In the commercial use of electronic tags, when the number of uses is counted at 1 billion, many companies want the price of each electronic tag below 5 cents.
Since the working distance of passive RFID systems is mainly limited to the energy supply of tags, with the development of low-power design technology, the working voltage of electronic tags will be further reduced, and the required power consumption can be reduced to 5 nm or even lower. This makes the working distance of the passive radio frequency identification system further increase, which can reach a working distance of more than tens of meters.
Improved passive read / write performance
Different application systems have different requirements for the read-write performance and working distance of electronic tags. In order to adapt to the occasion of rewriting tag data multiple times, it is necessary to further improve the read and write performance of the electronic tag so that the bit error rate and interference performance reach an acceptable level.
Suitable for recognition of high-speed moving objects
For high-speed moving objects, such as trains and cars on highways, the communication speed between electronic tags and readers will increase, so that high-speed moving objects can be identified quickly and accurately.
Multi-tag read / write function
In the field of logistics, a large number of items need to be identified at the same time. Therefore, a communication protocol suitable for this application must be adopted to achieve fast, multi-tag read / write functions.
Improved self-protection under electromagnetic fields
The electronic tag is in the electromagnetic radiation emitted by the reader, so the electronic tag may be in a very strong energy field. If the electromagnetic energy received by the electronic tag is strong, it will generate a high voltage on the tag. In order to protect the tag chip from damage, the self-protection function of the electronic tag under a strong magnetic field must be strengthened.
More intelligent and better encryption
In some application fields with high security requirements, the data of the electronic tag needs to be strictly encrypted, and the communication process is encrypted. In this way, electronic tags with stronger intelligence and better encryption characteristics are needed, so that when the "enemy" appears, the electronic tag can better hide itself from being discovered, and the data will not be obtained by unauthorized persons.
Tags with additional functions
In some application areas, it is necessary to find a certain label accurately. At this time, the label needs to have some auxiliary functions, such as a buzzer or an indicator. When the system sends an instruction, the electronic tag will issue an acousto-optic indication, so that you can find a specific tag among a large number of targets. In addition, in other aspects, such as a new type of anti-loss and anti-theft tags, electronic tags can be hidden or embedded in the articles during the generation process to solve the anti-theft problem of articles in supermarkets.
In order to protect privacy, when the design life of the label expires or the use of the label needs to be terminated, the reader issues a kill command or the label destroys itself.
New production process
In order to reduce the production cost of tag antennas, people began to study new antenna printing technology, which can print RFID antennas on product packaging at a cost close to zero. Using conductive ink to print the RFID antenna on the product's packaging box is cheaper than traditional metal antennas, printing speed is fast, saving space, and is beneficial to environmental protection.
With sensor function
Connecting electronic tags with sensors will greatly expand the functions and application fields of electronic tags.