The main task of the automated information system is to ensure that the information obtained is as reliable as possible. This is absolutely necessary, because it will take a lot of time and money to search and screen out incorrect information in large data arrays. To these losses it is also necessary to add direct losses, to which an inadequate decision can be taken, made on the basis of incorrect information.
Automatic identification technologies, including the recognition and registration of objects in real time without human intervention, most fully correspond to this task. These technologies are based on bar coding or radio frequency coding.
Radio Frequency Identification (RFID), or RFID (Radio Frequency Identification), as it is called abroad, is the most advanced identification technology, providing significantly more opportunities than others. It is based on the technology of transmitting information using radio waves, which is necessary for recognizing (identifying) objects with special tags attached to them that carry both identification and user information.
Imagine a shopping trolley in a self-service store equipped with a scanner and a touch-screen computer. You scan the goods, put them in the cart, and the computer gives information on each of the goods and offers additional purchases. The computer constantly shows the amount of the cost of the selected goods, so that you know every minute how much you will spend. Having finished choosing purchases, you go to the self-checkout or cashier. Since the amount of your purchases is already known, and all of them are packed, the waiting time is minimal. You just have to pay for your purchases.
An innovation that provides such a shopping trip is called RFID (Radio Frequency Identification) technology. RFID helps retailers around the world meet the needs of the most demanding customers and thus increase sales. This technology is gradually changing the retail industry, providing sellers with information on the status and movement of goods in real time, increasing warehouse productivity and preventing losses. Many of the world's leading retailers have planned the introduction of RFID technology. This move will affect more than 200,000 manufacturing enterprises and suppliers and direct the global hardware and software market to support RFID.
Today, there are many applications of RFID technology. We offer to your attention a far from exhaustive list of main applications in which the use of contactless identification is not only convenient, but also economically justified:
"Electronic stamp" for animals
Baggage sorting at airports
Timing in sports
Tickets, access to attractions, payment for services
Wal-Mart has long advised its customers to keep a close eye on price cuts on its products, and today this world's largest retailer is following price cuts ... on radio frequency identification systems (RFID tags). At the end of last year, she announced the mandatory transition of her stores to the RFID tag system. Since then, the price of RFID tags has halved, which, according to the company's specialists, will lead to a revolution in the world of retail and a complete change in supply chains. The largest Wal-Mart vendors were asked to switch to RFID tags in their packages as early as next January. Suppliers of this largest retailer strive to meet deadlines, creating a real boom in the RFID tag market. According to some analysts, Wal-Mart alone will need a billion RFID tags soon a year, and the demand for these tiny devices will only grow. Other large retailers and some government agencies now require their partners to attach RFID tags to all types of packaging. So, in November last year, the US Department of Defense approved a new identification system at the federal level, requiring its suppliers to install RFID tags on industrial parts and pallets.Add a comment
RFID technology is able to solve almost all the problems facing warehouses of any class.
RFID in logistics
Effective warehouse management requires the following tasks:
automatic collection of real-time information on the receipt and sale of goods;
exclusion of loss of information through the use of a unified system of accounting and control;
the ability to quickly search for goods;
reduction of time for all logistic operations.
A well-known technology in the field of automatic identification is bar coding. RFID compared with barcoding has the following advantages:
contactless reading and writing;
work out of line of sight;
long reading range;
large amount of data;
simultaneous reading of a large number of tags;
The general principle of operation of any RFID system is quite simple. There are always two main components in the system: it is a reader and an identifier (a map, a label, a key fob). The reader emits electromagnetic energy into the surrounding space. The identifier receives the signal from the reader and generates a response signal, which is received by the reader's antenna and processed by its electronic unit.
By the principle of the RFID system can be divided into passive and interactive. In a simpler passive system, the reader's radiation is constant in time (not modulated) and serves only as a power source for the identifier. Having obtained the required energy level, the identifier is turned on and modulates the radiation of the reader with its code, which is received by the reader. By this principle, most access control systems work, where you only need to get the serial number of the identifier. Systems used, for example, in logistics, work online. The reader in such a system emits modulated oscillations, that is, it forms a request. The identifier decrypts the request and, if necessary, generates an appropriate response.
Why does RFID technology conquer more and more widespread markets, penetrating the most diverse areas of activity where fast and reliable identification of items is required? Because it has a number of advantages, in particular:
RFID tags do not need contact or direct visibility;
RFID tags are read quickly and accurately (approaching 100% identification);
RFID can even be used in aggressive environments, and RFID tags can be read through dirt, paint, steam, water, plastic, wood;
passive RFID tags have virtually unlimited lifespan;
RFID tags carry a large amount of information and can be intelligent;
RFID tags are almost impossible to fake;
RFID tags can be not only for reading, but also for recording a sufficiently large amount of information.