A high-precision visible light positioning method and system based on particle swarm optimization
A particle swarm optimization and positioning method technology, which is applied in the direction of location information-based services, positioning, and short-distance systems, can solve the problems of insufficient convergence speed and particle swarm optimization algorithm that is not very suitable for visible light positioning systems Local convergence, three-dimensional positioning, and the effect of reducing calculation time
Active Publication Date: 2019-11-15
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the particle swarm optimization algorithm has the disadvantages that it is easy to fall into local convergence and the convergence speed is not fast enough.
The pure particle swarm optimization algorithm is not very suitable for the optimization of visible light positioning system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0057] This embodiment provides a high-precision visible light positioning system based on particle swarm optimization. The structure diagram of the system is as follows figure 1 As shown, it includes a light emitting system, an optical transmission channel and a light receiving system. The light emitting system includes an LED driver module and 4 LEDs; the light transmission channel is an air channel, which transmits the specific ID information; the light receiving system is a movable receiving end, which is composed of PD, amplifier circuit, filter circuit and digital signal processing module, wherein the digital signal processing module adopts the high-precision visible light positioning method based on particle swarm optimization to optimize and realize accurate locating.
[0058] Wherein, each LED of the light emitting system transmits a specific LED light signal to the light receiving system under the drive of the LED driving module, carrying different ID information res...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a high-precision visible light positioning method and system based on particle swarm optimization. The method comprises the steps that 1, the attributes of various particles are initialized to serve as initial positions of visible light positioning; 2, the global optimal position of the particles is subjected to simulation annealing domain search and updated; 3, the speedsand positions of the particles are updated; 4, the fitness of each particle is calculated according to a target function obtained by a mathematical model in the visible light transmission channel process; 5, the fitness of each particle is compared with the fitness of the optimal position where the particle passes through, the historical optimal position of the particle is updated, the fitness ofeach particle is compared with the fitness of the optimal position where the cluster passes through, and the global optimal position of the particle is updated; and 6, the steps 2-5 are repeatedly conducted until the iteration stopping condition is met, the global optimal position of the particles is output, and then the optimal positioning position of visible light communication is solved. According to the method, the visible light positioning precision is improved, and a real sense of three-dimensional positioning is achieved.
Description
technical field [0001] The invention relates to the field of visible light positioning, in particular to a high-precision visible light positioning method and system based on particle swarm optimization. Background technique [0002] With the rapid development of intelligent technology, people's demand for positioning is getting higher and higher. Traditional positioning technologies such as GPS cannot meet the demand for positioning accuracy, so indoor positioning technologies based on Wi-Fi, Bluetooth, and visible light communication have emerged. Among them, visible light positioning is favored for its advantages of low cost and high precision. [0003] However, most of the existing positioning algorithms use relatively complex hybrid positioning algorithms, and the positioning accuracy is not high, and even the range of height estimation is limited. This is not true three-dimensional positioning, but only a small-scale approximation. In addition, some of these methods ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W64/00H04B10/116G06N3/00G01S5/16
Inventor 吴玉香关伟鹏蔡烨谢灿宇
Owner SOUTH CHINA UNIV OF TECH