RFID technology RFID Hotel Card Sale

　　RFlD radio frequency identification is a non-contact automatic identification radio frequency technology, which automatically recognizes the target object and obtains relevant data through radio frequency signals, and the identification work does not require human intervention. The RND system is mainly composed of readers, antennas and tags. The reader mainly reads electronic tag information; the antenna is responsible for transmitting radio frequency signals between the tag and the reader; the tag is composed of coupling elements and chips, and each RFID tag has a unique electronic code attached to the object to identify the target object. The main features of RFID are:

　　(1) RFID technology realizes fast scanning of tags and meta-barrier reading. Its reading and writing range is up to 3,600, and the reading and writing distance can reach tens of meters. It can identify electronic tags of high-speed moving objects, and it can also be taken when there are objects in the middle.

　　(2) The RFID tag carries electronic information, which not only improves the anti-pollution and anti-destructive ability of the tag, but also greatly increases the memory capacity of r data, and the writable chip can write data multiple times, according to needs Change the information in the electronic chip.

　　In view of the harsh underground environment and many obstacles of mine transportation, the mine locomotive monitoring and management system uses RFID long-distance radio frequency identification technology to accurately and real-time record locomotives and transportation staff T for information, and return to the ground management center so that dispatchers can understand The dynamics of underground locomotive transportation.

　　Wi-Fi technology

　　wi-Fi is also known as the 802.1ib standard, using 2.4GHz direct sequence spread spectrum, the maximum transmission rate is 54bit/s, and the transmission rate can be adjusted to 5.5bit/s, 2bit/s and 1bit/s according to the signal strength. License-free on 2.4GHz and 5GHz frequency bands. Its main characteristics are: fast speed, high reliability, in an open area, the communication distance can reach 305m, it is convenient to integrate with the existing wired Ethernet network, and the cost of group mocking is lower. The networking system mainly includes wireless sites, AP nodes, and network servers. The sites and nodes can be connected in cascade or form a local area network, and the site can implement all the functions of the Hub.

　　In the mine locomotive monitoring and management system, WIH wireless network and TCP/IP protocol are used as the basic architecture, and the mine T industry Ethernet ring network is used as the transmission platform of the entire system, forming a combination of wired backbone and U-wire terminals, covering the mine Track area. Utilizing the technical advantages of WIFI network technology such as high transmission rate, short access time, wireless transmission, etc., it can provide real-time transmission of vehicle RFID data, quickly establish a connection, and no chain establishment delay.

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