RFID network layout Solving crosstalk problems
Second-generation ID card from the country, the Shanghai Special Olympics RFID Applications, Beijing Airport RFID baggage delivery system, the Guangzhou-Shenzhen Railway RFID ticket applied to the Shenzhen Library RFID applications, RFID became ubiquitous. However, in the application process, RFID has encountered varying degrees of frustration. December 7, this reporter talked to RFID network application solutions, Asia Pacific general manager REVA Satoshi Shiba.
RFID is the way to do with wireless identification technology, which suffered setbacks from the particularity of it. Many bands can use RFID, but the true realization of industrialization on a standardized RFID use some of the main band there are several: low frequency 125 kHz, higher are 13.56 MHz, 433 MHz band, UHF 800 MHz to 900 MHz band, up there is 2.4G and 5.8G band, and in RFID applications, the application of 13.56 MHz band accounted for over half the total annual business.
"This is our most popular applications around a band, and second-generation ID card is in this band." Sima said Cong. Because of the need to reach short distances, so the upper and lower transit vehicles, people need to stick card reader on to the airport self-service check-in cards, identity cards need to stick the machine automatically reads the area. 13.56 MHz application has been very mature, and UHF frequency bands will become a new challenge to the market.
Although the industry generally optimistic that the UHF band RFID applications will increase to a considerable share, but in promoting a lot of setbacks and challenges encountered, mainly reflected in several major areas:
First, RFID systems according to different needs and require different tags, different readers, not only different types of products, manufacturers may not be the same, which requires applications to be heterogeneous platforms, heterogeneous platform must have a system integrator with a holistic solution to integrate products from different vendors, this is a big challenge.
Second, in the UHF band applications, the tag is read and write from a distance, approximately ranging from a few meters to tens of meters, in the supermarket, warehouse and other more complex production environments which generally have multiple antennas on the space inside, which what kind of band antenna? Tag antenna which receives the signal? How control of it? May cause interference between the antenna, which is problematic, these issues are not resolved, it can not accurately read RFID data.
Third, the efficiency of time and deployment requirements. The requirements of customers vary widely, RFID design if they want to go inside to the specific production environment, their need for a deployment and on-site commissioning of the process, but also requires very quickly to solve problems, such contradictions are even greater challenges.
Fourth, get RFID data, but also sent to the application procedures for such precious data, how to maximize the use of it? Wal-Mart's experience and background to get RFID data, the first spread to 28 different applications to, therefore, the integration of data is a complex challenge.
"RFID is an important characteristic of each tag you can only receive a signal, if the emission source more, it will interfere with, the label did not know which signals to accept, like, like radio, only with a point in time can listen to a band. "Sima said Cong.
Engineering on the face of these challenges, REVA network company that is a good way: put an intelligent network hub, hub device according to the positioning of the RFID antenna to do optimal control, including the best band split control, optimal control for each antenna position, for all readers and antennas to optimize timing. This makes the collision and minimize ineffective time, making the complex environment in which every reader the highest utilization.
REVA's network hub known as the TAP?? Tags for processors, when a tag is detected when the number of antennas, TAP will be calculated by various algorithms logic, and then accurately tell the user that I have been reading the label is Which position, precisely positioning the label to solve the interference and crosstalk problems. Now, TAP This product has been able to dozens of compatible RFID reader, which in turn solve the problem of a heterogeneous platform. Sima said Cong.
The same time, TAP support all major business software, including ERP Software, or Oracle, SAP, IBM, companies such as Microsoft to provide the system software. If the business users need to develop their own application, you can also use the TAP to provide development kits, corresponding to each of their applications development, which would also solve the data integration problem.
I am an expert from China Quality Dress, usually analyzes all kind of industries situation, such as girls home alone webcam , pc camera 168 driver.
Processing your request, Please wait....
