Indoor positioning method, indoor positioning apparatus and indoor positioning system

Abstract

The system relates to an indoor positioning method, an indoor positioning apparatus and an indoor positioning system. The method comprises the steps of taking an indoor picture; acquiring characteristic information of an image of an LED light source according to the picture; taking at least preset number of communication images of the LED light source at a speed of a preset frame to acquire identification information uniquely corresponding to the LED light source; determining a position of a picture-taking spot in relative to the LED light source according to the characteristic information corresponding to the LED light source and an image-forming principle; determining an indoor position of the LED light source according to the identification information of the LED light source and an indoor layout diagram; and acquiring the indoor position of the picture-taking spot according to the indoor position of the LED light source and the position of the picture-taking spot in relative to the LED light source. Electromagnetic interference can be prevented because the indoor positioning method is in no need of installing wireless signal transmitting device. The indoor positioning system for realizing the indoor positioning method is simpler in structure and lower in cost.

Description

technical field [0001] The invention relates to surveying and mapping technology, in particular to an indoor positioning method, device and system. Background technique [0002] High-precision indoor positioning technology can help users obtain their own location information in real time, and can be widely used in positioning and navigation in complex indoor environments such as large shopping malls, airport stations, cinemas, museums, hospitals, etc., as well as valuables and equipment in factory workshops. In scenarios such as monitoring and tracking, the performance of the personal area network is improved through the location adaptive technology, which makes up for the deficiency that the Global Positioning System (Global Positioning System, GPS) cannot be used indoors due to the shielding effect of buildings and walls. [0003] In the prior art, indoor positioning methods mainly include infrared indoor positioning, ultrasonic indoor positioning, Bluetooth indoor positio...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, indoor positioning methods mainly include infrared indoor positioning, ultrasonic indoor positioning, Bluetooth indoor positioning, radio frequency identification (Radio Frequency Identification, RFID) indoor positioning, ultrawideband (UWB) indoor positioning, and WiFi indoor positioning. These indoor positioning methods all need to install wireless signal transmitters separately, therefore, the indoor positioning system structure that is used to implement above-mentioned method is comparatively complicated, and cost is higher, and also has electromagnetic interference, can't be applicable to airport, hospital etc. required indoor location

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