The working principle of UHF reader!I Code RFID Card Sale

　　The UHF reader is a radio frequency device that works in the 840-960MHz frequency band. It uses electromagnetic fields to transmit energy through reflection coupling to read the stored information in the RFID tag. It has the advantages of long-distance reading and group reading. It does not require batteries when used with passive electronic tags, and the cost is low, which can greatly reduce project costs.

　　UHF readers play an important role in the RFID system. They are responsible for the two-way communication with the electronic tag, and at the same time receive control commands from the host system. Its working principle is the way of reflection coupling, that is, the reader first sends out a certain frequency radio frequency signal. When the electronic tag enters the working area, it first generates an induced current to activate itself, and then emits a signal with its own information. The reader reads the signal and sends it to the information processing center for corresponding processing.

　　The UHF reader/writer is based on the ISO 18000-6 standard communication protocol. Under this protocol, the recognition distance of the electronic tag can generally reach 1~10 m, and the recognition distance of the electronic tag depends on the output power of the reader. The farther the distance, the higher the accuracy of its recognition, but at the same time the higher the output power of the reader, the higher its cost and technical difficulty will be. In practical applications, the implementation plan is generally determined according to the system requirements.

　　In recent years, there have been more and more UHF commercial application solutions, more and more technical applications, and the barriers to entry are gradually lowered, greatly improving the technology research and development of UHF readers and accelerating the process of interconnection of everything in the Internet of Things.

　　From radar detection to baggage check, how does RFID make airport baggage not bad at all!

　　From radio technology to RFID technology, from military warfare to civilian commercial applications. RFID technology has blossomed, providing information-based management efficiency for all walks of life, improving the accuracy and sorting speed of baggage consignment, and optimizing the entire airport baggage consignment system.

　　Taking Chongqing Jiangbei Airport as an example, the T3A terminal is not good at facing a huge amount of luggage. This depends on the RFID technology in the T3A luggage sorting system!

　　Intelligent sorting-the "underground great wall" in the terminal

　　As one of the most advanced sorting systems in China, the overall length of the baggage system line in the T3A terminal of Chongqing Jiangbei International Airport has reached 17 kilometers, and the total number of main equipment in the entire system has exceeded 3,000.

　　In the past, due to the limited handling capacity of the baggage system, passengers arriving at the airport in advance had to wait until the specified time to check their baggage. Now, passengers can check their luggage as soon as they arrive at the airport on the day of the flight. This is because the T3A baggage sorting system has designed 2 early storage systems with a total of more than 50 storage lines, which can basically cover early baggages throughout the day.

　　The biggest highlight of the T3A baggage sorting system is the use of open-loop RFID identification application technology for the first time in China, which greatly improves the recognition rate of baggage sorting.

　　The RFID automatic baggage sorting system is to paste an RFID electronic tag on the randomly checked baggage of each airplane passenger, which contains all the passenger's flight information, and is installed at each control node of the baggage flow, such as the sorting, loading area, and baggage claim area. Electronic tag reading and writing equipment.

　　When the baggage with tag information passes through each node, the RFID reader will read the information and send it to the database. Realize the information sharing and monitoring of baggage in the whole process of transportation. The baggage recognition accuracy rate has increased from about 90% before to over 99%.

　　When checking luggage at T3A terminal, the staff will tie a baggage tag to the baggage. The appearance looks the same as the ordinary baggage tag, but the "hidden mystery"-electronic chip can be found by tearing off the label. The passenger's luggage information is stored in this chip and recognized by the sensor.

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