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Location implementation method based on RFID (Radio Frequency Identification) indoor positioning device

An implementation method, an indoor positioning technology, applied in the field of positioning, can solve the problems of complex positioning methods and low positioning accuracy, and achieve the effect of low cost, no need for wiring, and low cost

Inactive Publication Date: 2013-11-20
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method can overcome the problems of complex positioning methods and low positioning accuracy in current indoor positioning, and has the advantages of low cost, simple installation, and strong scalability.

Method used

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  • Location implementation method based on RFID (Radio Frequency Identification) indoor positioning device
  • Location implementation method based on RFID (Radio Frequency Identification) indoor positioning device
  • Location implementation method based on RFID (Radio Frequency Identification) indoor positioning device

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Embodiment Construction

[0014] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] figure 1 Among them, S100 is the management terminal; T101, T102 and T103 are RFID beacons; R100 is the RFID reader. The RFID beacons (T101, T102 and T103) are connected to the RFID reader (R100) through a 2.4G radio frequency transceiver module, and the management terminal (S100) and the RFID reader (R100) are connected through a dedicated short-distance communication protocol DSRC interconnected.

[0016] When in use, an RFID reader (R100) is assigned to the positioned objects such as people and things. At the same time, in order to identify wireless data, RFID beacons (T101), (T102) and (T103) are assigned unique identification numbers and saved There is fixed location coordinate information.

[0017] The location coordinates of the three RFID beacons (T101), (T102) and (T103) are known to be (x 1 ,y 1 ), (x 2 ,y 2 ) , (x 3 ,...

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Abstract

The invention relates to the field of location and particularly relates to a location implementation method based on an RFID (Radio Frequency Identification) indoor positioning device. Position coordinates of three known RFID beacons are respectively (x1, y1), (x2, y2) and (x3,y3). The location implementation method comprises the following steps of setting current position coordinates of a first RFID reader to be (x, y) and the distances between the first RFID reader and the three RFID beacons to be d1, d2 and d3, and calculating the values of d1, d2 and d3 by adopting a distance computing method based on time of arrival (TOA); and calculating the position coordinates of the RFID reader by adopting a trilateration method according to the distances d1, d2 and d3 between the first RFID reader and the three RFID beacons, and further carrying out indoor location. The location implementation method is applied to the fields of position management of schools for students, position service of convention centers for exhibits and the like and can also realize anti-theft monitoring for indoor articles by slight improvement.

Description

technical field [0001] The invention relates to a positioning field, in particular to a positioning realization method based on an RFID indoor positioning device. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning is increasing, especially in complex indoor environments, such as airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots, mines and other environments, often It is necessary to determine the location information of the mobile terminal or its holder, facilities and objects indoors. However, limited by conditions such as positioning time, positioning accuracy, and complex indoor environments, relatively complete positioning technology cannot be well realized at present. Therefore, experts and scholars have proposed many indoor positioning technology solutions, such as A-GPS positioning technology, ultrasonic positioning technology, Bluetooth technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02
Inventor 施文灶王平
Owner FUJIAN NORMAL UNIV
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