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Optical positioning method, system and device based on LED and image sensor

An image sensor and optical positioning technology, which is used in measurement devices, radio wave measurement systems, instruments, etc. to achieve high-precision positioning.

Inactive Publication Date: 2017-05-03
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method utilizes the angle and distance information between the transmitter and receiver at the same time, which can overcome the defect that it is difficult to accurately locate visible light based on a single LED in the prior art

Method used

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  • Optical positioning method, system and device based on LED and image sensor
  • Optical positioning method, system and device based on LED and image sensor
  • Optical positioning method, system and device based on LED and image sensor

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Embodiment Construction

[0068] Next, preferred embodiments of the present invention will be described in detail. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the present invention shown in the drawings and described based on the drawings are merely exemplary, and the technical spirit of the present invention and its main operations are not limited to these embodiments.

[0069] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

[0070] This patent provides a new positioning method based on a single LED and an image sensor, which uses information in two dimensions of distance and angle between the transmitter and receiver to achieve positioning. The present invention can only us...

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Abstract

The invention relates to an optical positioning method, system and device based on an LED and an image sensor, and the method, system and device just employ one LED and one image sensor. The image sensor can measure the spatial relative angle between the LED and a receiver, also can sample the intensity of an optical signal in a mode similar to a single photodiode, demodulates a received signal, and measure the intensity of the received signal. Through a signal attenuation model, the method, system and device solve the distance between the LED and the receiver, and can achieve the high-precision position through two-dimensional information: angle and distance.

Description

technical field [0001] The present invention relates to visible light positioning technology, and more particularly to a light positioning method, system and device based on a light emitting diode (LED) and an image sensor. Background technique [0002] With the construction of large indoor venues such as airports, stations, and shopping centers and the rapid development of robot technology, the demand for indoor positioning continues to grow. Most of the existing indoor positioning technologies such as Wi-Fi and Bluetooth use radio frequency technology. In complex indoor environments, they are interfered by multipath effects and cause large positioning errors. Compared with traditional light sources, LED has higher luminous efficiency. It is a new generation of green and energy-saving lighting equipment, and it is gradually becoming the main lighting source. Visible light positioning uses new white light spectrum resources to load the positioning signal to the white light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/12
CPCG01S11/12
Inventor 刘璐郑重胡薇薇
Owner PEKING UNIV
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