Indoor Localization Hardware System Design Based On Radio Frequency Identification Technology

With the development of Internet technology and the rapidly increasing demand ofnavigation localization, indoor location has become an important complement of globallocalization system for indoor environments and the bottlenecks of target tracking location.Because of the complexity of indoor transmission environment and the diversity ofinterference sources, so the indoor localization system exists the problems that the datatransmission is not reliable,the anti-jamming capabilities is poor and so on. This article isbacked by radio frequency identification technology, with CC1100 wireless transceivermodules and ultra low power MCU, designs the indoor Localization system based onRFID.This system has the important application value for intelligent environments,human-computer interaction process, property management systems, and so on.The paper designs the hardware system including read device, label, power,the datadisplayed and storage module,the based on the RFID and indoor positioning work principle.The read device unit includs main control device, CC1100 wireless module, power unit andUSB to 485 bus part, communicated by half duplex mode, and completes the RSSIinformation.label unit includs MCU, wireless module and power part.Via detection therecognition read device instruction, RSSI information is sent to a reader unit by wireless unit.Software mainly designs the software processes of reader unit and label. Through the collisionbetween the reader and the tag design, system transmisses RSSI information accurately.Test results show that, in the context of indoor and outdoor 20m*20m and linear 50mdistance, using the indoor localization system based on RFID, can realize the function ofdata acquisition stably. It can meet the requirements of project tasks.