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Indoor visible light positioning method and device considering light source shape

A technology of light source shape and positioning method, applied in positioning, measuring devices, instruments, etc., can solve the problems of large positioning error of tracking and positioning system, and achieve the effect of high positioning accuracy, wide application range and strong practicability

Pending Publication Date: 2020-10-02
TSINGHUA UNIV
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  • Claims
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Problems solved by technology

Due to the absolute rationalization of the light source in signal acquisition in reality, the shape of the light source is ignored, which leads to a large positioning error in the tracking and positioning system

Method used

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  • Indoor visible light positioning method and device considering light source shape
  • Indoor visible light positioning method and device considering light source shape
  • Indoor visible light positioning method and device considering light source shape

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Embodiment Construction

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0056] The indoor visible light positioning method and device considering the shape of the light source according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0057] Firstly, an indoor visible light positioning method considering the shape of a light source proposed according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0058] figure 1 It is a flowchart of an indoor visible light positioning method ...

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Abstract

The invention discloses an indoor visible light positioning method and device considering a light source shape. The method is suitable for application with a non-point light source as a positioning signal sending end, a light signal emitted by the non-point light source is received by a signal receiving end of a to-be-measured object, the to-be-measured object regards the central point of the non-point light source as a signal emission point, and preliminary positioning of the to-be-measured object is obtained through a point light source positioning algorithm; and updating the position information of the to-be-measured object for multiple times based on the light source shape; and inputting the final updating result into the interactive multi-model filter as an observed quantity to correct a predicted value of the filter so as to reduce noise and equipment measurement errors. The proposed positioning method is easy to implement, and can be applied to indoor positioning containing non-point light sources, and the precision is higher than that of an existing point light source positioning algorithm.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor visible light positioning method and device considering the shape of a light source. Background technique [0002] With the development of various network technologies, people have higher and higher requirements for indoor positioning accuracy, and the successful application of the Interactive Multiple Model (IMM) algorithm in indoor positioning has greatly improved the accuracy of indoor positioning. One of the core problems of target positioning and tracking is how to establish a motion probability model that matches the actual motion of the object. In reality, the object motion model is not a single motion, so the IMM algorithm that integrates multiple motion models has a good filtering effect. At the same time, Kalman filter is widely used as linear estimation due to its fast convergence and no need for prior training. It uses a large number of observat...

Claims

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Application Information

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IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 王劲涛赵红秀潘长勇宋健
Owner TSINGHUA UNIV
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