Positioning system and method based on RFID (Radio Frequency Identification Device) dual-frequency technology

Abstract

The invention relates to a positioning system based on an RFID (Radio Frequency Identification Device) dual-frequency technology. The system comprises a server, RFID tags, a plurality of RFID readers and a plurality of low frequency triggers, wherein the RFID readers are respectively connected with the server through a concentrator; each RFID reader is distributed and disposed in a positioning area; the RFID tags are bound on a positioned object body; the low frequency triggers are installed in the RFID readers; and each RFID tag includes a low frequency receiving module and a radio frequency sending module. Compared with the prior art, full-area monitoring positioning in an indoor and outdoor complex environment is realized by use of organic combination of respective radio performance of RFID low frequency and microwaves, data of RSSI (Received Signal Strength Indicator) received by the tags, characteristics of automatic cycle of a signal gain sent by a tag antenna, meshed area setting and a three-point positioning method. The system can be applied to the fields such as finance, armies, logistics storage, medical care and the like and has positive application meaning for the present era of Internet of Things.

Description

technical field [0001] The invention relates to a wireless positioning system, in particular to a positioning system and method based on RFID dual-frequency technology. Background technique [0002] The widespread use of IOT (Internet Of Things) has further promoted the development of sensor technology, and the new generation of smart sensors is characterized by low power consumption, short distance, and wireless communication. It not only has the ability of automatic perception and data collection, but also has Calculation processing, short-distance communication functions, so that the wireless sensor network (WSN) composed of sensors as front-end nodes can collect relevant data for various monitoring objects in the coverage area and process them by the background computer to obtain accurate data. information, serving various application fields. [0003] In most applications of wireless sensors, the location information of sensor nodes or monitoring targets is essential. ...

AI Technical Summary

Problems solved by technology

[0005] At present, the positioning systems used in the industry, such as GPS and Beidou navigation, are suitable for outdoor open environments. The positioning accuracy is not too high, and it is difficult to adapt to complex and multi-obstacle environments.

And a parking space sensing system based on RFID technology (authorized announcement number CN 202126762 U) is a solution that only uses RFID technology to sense whether there is a vehicle in a static parking space, and can neither track and locate moving objects nor Applications in relatively complex environments

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