RFID tag and bar code
Radio frequency technology and bar code What is the difference? Conceptually, the two are very similar, the aim of quickly and accurately track the object recognition. The main differences are as follows: whether the written information or update the memory capacity. Bar code memory can not be changed. Unlike bar code radio frequency tags, its unique identifier can not be copied. Label is not just limited field of vision, since the information is transmitted by radio waves, and bar codes must be within view. As the low cost bar code, a perfect standard system, has spread around the world, it has been generally accepted, on the whole, radio frequency technology are only limited to within the limited market share. Currently, a variety of bar code control template has been in use in the access to information channels, radio also has different standards.
RF technology and bar are two different technologies, the application of different, sometimes overlapping. The big difference between the two is bar codes are "visible technology" Scanners Work under the guidance of the people can only receive it within sight of the bar code. In contrast, RFID does not require to see goals. RFID tags as long as the role of the receptors can be read within. Bar code itself also has other shortcomings, if the label was scratched, contaminated or off, the scanner can not identify the target. Bar codes can only identify the producers and products, and unable to account for specific commodities, posted in all the same bar code on the packaging of a product are the same, can not identify which products the first date.
Currently, the cost, as part of different, smart barcode labels than the much more expensive, the cost of bar codes is the barcode paper and ink costs, while active RFID memory chip prices are more than 2 U.S. dollars, passive RFID tags costs are more than one U.S. dollar. But there is no built-in chip price tag only a few cents, it can be used on data requirements of the situation is not so high, while a bar code does not have the security features.
The absence of a precise timing device would be unfair competition. Radio frequency card used in the precise timing marathon. Athletes in their own shoelaces tied on a very easy radio frequency card, the starting line and finish line in the game by placing a small pad with a tiny antenna, when the athlete crossed the gasket, the timing system receives the RF card issued athletes brought The ID number, and recorded at the time. So that each player has its own start and end time, not with the possibility of unfair competition. If the race route in every five kilometers to set such a gasket, you can easily record the stage of athletes running the Take your time. The device used since 1995, all major marathon, with the Berlin Marathon in 1995, 1996, the Los mountain marathon chi, 1996 London Marathon, Berlin Marathon in 1996, 1996 Atlanta Olympic Games Summer Olympic marathon competitions.
RFID can also be used in Grand Prix on the exact timing. Reader connected to the track following a series of antennas, radio frequency card to the front, on top of the antenna. When the cars crossed the starting line, the car's ID number and the time is time recorded and stored to a central computer, the way to the end of the game, each contestant will have a satisfactory result.
Conclusion Radio frequency identification technology in China is in a fledgling stage, but its potential is enormous, and it looks promising. In the information society for all kinds of information and processing requirements for fast, accurate and RFID technology in the near future will be the same as with other identification technology embedded in our lives, to improve our lives. For such a new technology, we should step up publicity efforts, hoping to spread it as soon as possible, use it to improve our efficiency and economic benefits.
Comparison. I still think that the management application for RFID and standardization of work needs to catch up, otherwise many manufacturers their own ways, creating a fait accompli, and then integrated management will be very difficult. Xianzai uncompleted RFID international standards, only Yi Xie Biao Zhun industry, this bring a Yi Ding Ji standardization difficult. However, from the strategic point of view. Increasingly pressing issue.
I am China Products writer, reports some information about screen wiper , socket 478 cpu cooler.
Processing your request, Please wait....
