Research on High-proecision Visible Light Positioning Technology Applized to Nuclear Power Plants

ZHANG Xiaoqiang; LIU Zelin; ZHANG Congjie; ZHANG Hongliang; PAN Feng

doi:10.3969/j.issn.1004-440X.2024.01.006

Abstract：Wireless communication technology can effectively promote the more efficient and convenient construction and operation of nuclear power plants.However,traditional wireless communication technologies come with certain potential risks,such as radiofrequency sparks and electromagnetic interference,which could pose a threat to the operation of nuclear power plants.In recent years,LED lighting technology,known as"green lighting,"has rapidly advanced.Visible Light Communication(VLC)technology,particularly Visible Light Positioning(VLP),has garnered widespread attention due to its lack of electromagnetic interference and high safety standards.In consideration of the stringent environmental requirements of certain extreme environments where robots need precise and radiation-resistant indoor positioning systems to perform challenging tasks,this paper introduces a novel high-precision VLP system.This system aims to achieve robust and accurate indoor positioning in radiation environments,thereby meeting the demands of industrial intelligence applications in nuclear power plants.Additionally,the paper proposes intelligent LED fixtures with VLC functionality.It combines a high-precision VLP algorithm based on dispersion calibration optimization methods,offering both illumination and accurate indoor positioning simultaneously.Experimental tests demonstrate that the proposed VLP system can achieve an average positioning accuracy of 0.82 cm,ensuring that 90％of positioning errors are less than 1.41 cm.By installing these intelligent LED fixtures at critical locations in nuclear power plants,an indoor positioning and tracking system can be established,thereby enhancing the safety of mobile robots within the nuclear power plant.