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Indoor positioning system and method based on visible light communication

A technology for visible light communication and indoor positioning, applied in positioning, radio wave measurement systems, measurement devices, etc., can solve the problems of low practicability, high deployment cost, poor scalability, etc., and achieve the goal of improving practicality and reducing deployment costs. Effect

Active Publication Date: 2018-09-14
HKUST SHENZHEN RES INST
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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides an indoor positioning system and method based on visible light communication to solve the problems of high deployment cost, poor scalability, and low practicability of existing indoor positioning methods based on visible light communication. low problem

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  • Indoor positioning system and method based on visible light communication
  • Indoor positioning system and method based on visible light communication
  • Indoor positioning system and method based on visible light communication

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] It should be noted that the term "comprising" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally further includes Other steps or units inherent in these processes, methods, products or apparatus. In addition, the terms "first", "second", and "third", etc. are used to distinguish different objects, not to ...

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Abstract

The invention being applicable to the field of positioning technology provides an indoor positioning system and method based on visible light communication. According to the embodiment of the invention, each visible light beacon selects a time slice randomly from a plurality of time slices allocated for the visible light beacon in advance; a visible light signal carrying identity identification information is emitted in the selected time slice, so that a phenomenon that a plurality of visible light beacons are connected with a control unit in a wired manner is avoided and thus the deployment cost of the system is lowered. Meanwhile, a visible light receiver extracts the corresponding identification information from the received visible light signal and an incident angle of a visible lightsignal is determined based on the received signal strength (RSS) of the visible light signal; a terminal determines a current coordinate of the terminal according to the incident angles of at least three visible light signals as well as coordinates of visible light beacons for emitting at least three visible light signals. Therefore, the requirement of needing the visible light beacon to be a Lambertian radiator is removed and thus the visible light beacon can have any shape, so that the practicability of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of positioning, and in particular relates to an indoor positioning system and method based on visible light communication. Background technique [0002] In recent years, indoor positioning technology based on visible light communication has become a research hotspot due to its advantages of high positioning accuracy and environmental protection. The existing indoor positioning technology based on visible light communication usually uses multiple light emitting diodes (Light Emitting Diode, LED) distributed in the indoor space to emit visible light signals, and uses cameras or photodiodes as photoelectric sensors to receive the visible light signals emitted by LEDs. The received signal strength (RSS) of the visible light signal received by the sensor and the corresponding position information of the LED used to emit the visible light signal determine the current position information of the light sensor, there...

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Application Information

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IPC IPC(8): G01S5/10
CPCG01S5/10
Inventor 梁青刘明
Owner HKUST SHENZHEN RES INST
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