LED-based indoor visible light accurate positioning reception model and positioning method therefor

Abstract

The invention discloses a LED-based indoor visible light accurate positioning reception model and a positioning method therefor. The LED-based indoor visible light accurate positioning reception model comprises at least five equal-area photoelectric receivers composing a polyhedron having six or more surfaces. A diameter of each one of the at least five equal-area photoelectric receivers is much less than a distance between the equal-area photoelectric receiver and a LED light source. Receiving units of the at least five equal-area photoelectric receivers face outward. The bottom surface of the polyhedron is used for fixing the model and other surfaces of the polyhedron are photoelectric receiving surfaces. Average optical power signals received by the equal-area photoelectric receivers are input into terminal processing equipment. The terminal processing equipment receives current values of a dip angle and an azimuth angle of a model of an electronic compass unit. When the reception model enters into a LED light source illumination zone, at least three of the photoelectric receiving surfaces receive effective LED visible light signals. The LED-based indoor visible light accurate positioning reception model has the advantages that a structure is simple; a communication speed is not limited by the reception model; a positioning algorithm is simple; a positioning precision is high; a system cost is low; practicability is good; and an application exploitation prospect is good.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning and navigation, and in particular relates to an LED-based indoor visible light precise positioning receiving model and a positioning method. Background technique [0002] Regardless of ordinary commercial activities, scientific research, or search and rescue industries, positioning and navigation services have important applications. As a mature wireless positioning system, GPS has been widely used in open outdoor environments. However, it cannot be used in indoor environments where people's activities are most frequent due to poor reception. Indoor positioning and navigation has broad market prospects, such as automated guides for large shopping malls and museums, automatic navigation for parking spaces in large parking lots, patient tracking in hospitals, automatic positioning and navigation for mines, emergency guidance in buildings, etc. [0003] According to the complexity of the ...

AI Technical Summary

Problems solved by technology

The photoelectric receiving models currently researched mainly include photodiode PD, photodiode PD array, and camera: the PD receiving model can realize the reception of a single LED visible light signal, the communication rate is not limited by the PD response rate, the positioning accuracy is poor, and the implementation is simple; PD The array model needs to be used in combination with a lens, which can realize the separate reception of multiple LED visible light signals, the communication rate is not limited by the PD response rate, the positioning algorithm is complex, the positioning accuracy is high, the optical system is complex, and the stability and practicability are not good; the camera model Multiple LED visible light signals can be received separately, the communication rate is limited by the frame rate of the camera, the positioning algorithm is complex, the positioning accuracy is high, and the system cost and practicability are not good

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