Indoor optical positioning system and using method thereof

Abstract

The invention discloses an indoor optical positioning system. The indoor optical positioning system comprises light sources, light polarization and signal modulation devices, light sensing devices and digital demodulators, wherein the light sources are arranged indoors, a light source control device is further arranged, and the quantity of the light sources is set according to indoor space; the light polarization and signal modulation devices adopts an LED internal module, the devices are arranged on the peripheries of the light sources, and light emitted by the light sources is protected towards the exterior after modulation; the light sensing devices are arranged on the peripheries of the light polarization and signal modulation devices, and light intensity after sensing modulation services as signal output; the digital demodulators are connected with the light sensing devices, and are used for receiving signals emitted by the light sensing devices and converting the signals into positional information for output. By adopting the optical positioning system and a using method thereof, the reliability is high, a multi-path effect caused by a radio frequency positioning method can be overcome, the defect that the environmental suitability of a visual positioning scheme is low can also be overcome, and furthermore, positioning for small objects can be conveniently completed through the light-weighted light sensing devices.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a system for indoor optical positioning using indoor light and a method for using the system. Background technique [0002] With the rapid development of network technology and the increasing demand for location-based services, the importance and potential market of indoor positioning technology are increasing. Due to the influence of transmission loss and multipath effect, traditional GPS positioning technology cannot be used effectively indoors. Therefore, a series of indoor positioning systems based on the principles of Wi-Fi, Bluetooth, ultrasound, infrared and ultra-wideband have gradually emerged. However, due to the limitation of positioning accuracy and cost, these positioning methods have not been widely used. Compared with the widely used GPS positioning, visible light positioning technology can be used in indoor environment, making up for th...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the deficiencies of the prior art, the present invention provides an indoor optical positioning system based on visible light and a method of using the system. The optical positioning system and its method of use in the present invention have high reliability and can overcome the radio frequency positioning method. The multipath effect caused can also alleviate the disadvantage of poor environmental adaptability of the visual positioning scheme. Further, the lightweight light-sensitive device can facilitate the positioning of small items

Images