Research And Implementation Of Visible Light Indoor Positioning Method Based On Intelligent Device

With the development of the times,the improvement of the quality of life by the advancement of science and technology is becoming more and more obvious.People are increasingly relying on these scientific research results,such as the demand for indoor positioning.From the national security field to people's daily life,there is a growing expectation for indoor positioning.Outdoor positioning methods such as the Beidou system are no longer able to meet the needs of the country and the people for indoor positioning.This has enabled the research technology of indoor positioning to flourish,and various solutions using different ideas to achieve positioning have sprung up.In the past ten years,research on indoor positioning has produced many positioning schemes based on like radio frequency and infrared,but these technologies are not well promoted because of their dependence on dedicated transceivers and the environmental impact.Visible Light Communication(VLC),as an emerging communication technology in recent years,provides researchers with a new indoor positioning resource.VLC-based indoor positioning technology has gradually become one of the hot research areas of indoor positioning because of its high positioning accuracy,no need to deploy special equipment,and strong robustness.This paper studies the model of indoor visible light localization system and introduces the theoretical principle of different indoor visible light localization algorithms and the channel transmission model of LED.After analyzing the shortcomings of the visible fingerprint fingerprinting method,a new fingerprint positioning model has been proposed.The fingerprint in the traditional fingerprint localization method is improved,and combines the light intensity sequence of motion information and visible light to form a brand new fingerprint.After that,we proposed a dynamic fingerprint library idea,which is used to match fingerprints during online phase positioning.A DTW-based positioning algorithm is proposed to match fingerprints and estimate the final positioning result.Then the paper constructs a new fingerprint-based fingerprinting model based on visible light.This model solves the influence of equipment difference on the traditional fingerprint location scheme to a certain extent,and improves the positioning accuracy.Finally,the simulation experiment proves that the scheme is feasible.