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Single-image-sensor indoor visible light positioning system and single-image-sensor indoor visible light positioning method based on non-angle measurement

An image sensor and sensor room technology, applied in the field of visible light communication, can solve the problems of increased hardware cost, complexity, difficulty in accurate angle measurement, etc., and achieve the effects of avoiding positioning errors, simplifying the structure, and having a simple structure of the receiving device

Active Publication Date: 2017-07-14
BAISE UNIV
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AI Technical Summary

Problems solved by technology

[0004] Since the indoor positioning method based on image sensor imaging needs to accurately measure the angle, it is much more complicated than the common indoor positioning method of visible light signal strength, and it is difficult to accurately measure the angle, and the use of more than two image sensors will increase the hardware cost, it will also bring problems such as positioning system stability and reliability

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  • Single-image-sensor indoor visible light positioning system and single-image-sensor indoor visible light positioning method based on non-angle measurement
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  • Single-image-sensor indoor visible light positioning system and single-image-sensor indoor visible light positioning method based on non-angle measurement

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Embodiment

[0031] 1. Light source planning

[0032] The geometric measurement method and the imaging method need to measure the distance and the angle of the emitted light. In the indoor environment, the accuracy and stability of the positioning will be affected by the signal multipath reflection, the fluctuation of the luminous intensity, and the occlusion of the signal light, and the reflected light has the greatest impact. . In particular, the positioning system using the signal strength (RSS) ranging method is more significantly interfered by reflected light.

[0033] The present invention starts from the main factors that generate reflected light, and adopts two methods to suppress the interference of reflected light: LED lighting source distribution and light source emission angle optimization design; receiver receiving field angle optimization design.

[0034] Indoor LED lighting source press attached figure 1 The way of distribution on the ceiling plane, the light source distri...

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Abstract

The invention relates to a single-image-sensor indoor visible light positioning system and a single-image-sensor indoor visible light positioning method based on non-angle measurement. The system comprises a sending end and a receiving end. The sending end comprises a plurality of light sources which are arranged in the same plane and have a unique beacon and position coordinates. The receiving end comprises a lens group and an image sensor arranged coaxially. The plane of the lens group and the sensing plane of the image sensor are parallel to each other, and the distance between the two planes is equal to the focal length of lenses. The lens group is arranged between the image sensor and the sending end. The structure of the positioning system is simplified greatly, and the positioning accuracy of the system is improved greatly. High-precision 3D positioning with the precision magnitude within centimeters can be realized. The application field of the positioning system is expanded greatly.

Description

technical field [0001] The invention relates to a visible light positioning method and system, belonging to the technical field of visible light communication, and in particular to a single image sensor indoor visible light positioning system and method based on non-angle measurement. Background technique [0002] Visible light communication positioning technology based on LED green lighting source has outstanding advantages such as wide indoor coverage, energy saving, safety, simple layout, low cost, and good electromagnetic compatibility. The current positioning methods mainly include indoor positioning methods based on visible light signal strength, indoor positioning methods based on code division multiple access, indoor positioning methods based on frequency division multiple access, visible light multi-receiving point geometric center positioning methods, image sensor imaging based In addition to the indoor positioning method, there is also a positioning method that co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/42
CPCG01S17/42Y02D30/70
Inventor 卢洪斌
Owner BAISE UNIV
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