An indoor positioning system

Abstract

The invention provides an indoor positioning system comprising a tag positioning module and a positioning evaluation module. The tag positioning module is used for positioning an unknown position tag so as to acquire a positioning result. The positioning evaluation module is used for establishing an evaluation index to evaluate the accuracy of the positioning result. When the tag positioning module performs positioning on the unknown position tag, positioning of the unknown position tag is completed by using a known position tag and a reader. The tag positioning module comprises a signal intensity calculation unit, a tag distance solving unit and a position solving unit. The signal intensity calculation unit is used for calculating the receiving signal intensity of the known position tag and the unknown position tag on each reader. The tag distance solving unit is used for solving the distance between the signal receiving intensity of the unknown position tag and the signal receiving intensity of the known position tag. The position solving unit is used for solving the position of the unknown position tag. Relatively accurate indoor positioning can be realized by the indoor positioning system.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor positioning system. Background technique [0002] With the in-depth development of wireless technology, mobile communication technology and "context-aware services", people are increasingly eager to acquire and process information on any object in the environment at any time, any place, and in any way. In the field of context-aware service technology, the location information of the service object is one of the most important environmental parameters, and determines whether the context service can be effectively and accurately implemented. Most of the existing technologies use satellite-based positioning systems and cellular network-based positioning systems to acquire location information of service objects. However, for some indoor public environments that require contextual services, such as schools, hospitals, warehouses, supermarkets, prisons, and mines...

AI Technical Summary

Problems solved by technology

However, for some indoor public environments that require contextual services, such as schools, hospitals, warehouses, supermarkets, prisons, and mines, whether it is a satellite-based positioning system or a cellular network-based positioning system, its standard error is relatively small relative to the indoor environment At the same time, the signal has been greatly attenuated to a very weak point by the influence of buildings, making it basically impossible to extract navigation data and time information directly from satellites or base station broadcasts like outdoors, so the positioning accuracy is greatly limited , it is difficult to directly apply to indoor positioning

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