一种基于双LED基站的可见光定位系统及方法
The visible light positioning system using dual LED base stations utilizes signal processing technology to calculate the phase difference, solving the problems of cumbersome ranging parameter calibration and low accuracy in existing technologies, and achieving high-precision three-dimensional positioning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN UNIV
- Filing Date
- 2022-12-29
- Publication Date
- 2026-07-17
AI Technical Summary
In existing visible light positioning schemes based on photodetectors, the calibration of ranging parameters is cumbersome and easily affected by environmental changes. The ranging model is complex, and ignoring the receiver tilt angle leads to large errors. Traditional methods are time-consuming, labor-intensive, and have low accuracy.
A visible light positioning system based on dual LED base stations is adopted. Multiple visible light positioning base stations are wirelessly connected to the positioning terminal. The signal is processed by bandpass filter and downconverter. The phase difference is calculated by combining Hilbert transform and weighted least squares method to realize three-dimensional position calculation.
It eliminates the arduous calibration work, removes the influence of equipment heterogeneity and environmental differences, and ensures that the ranging accuracy is not affected by the tilt angle of the positioning terminal, thus achieving high-precision three-dimensional positioning.
Smart Images
Figure CN116027267B_ABST