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Two-dimensional dynamic indoor locating system and method for visible lights based on direction of receiver

A two-dimensional positioning and receiver technology, applied in the field of visible light communication, can solve the problems of high-cost sensors and unsuitable positioning systems, and achieve the effects of simple receiver, easy popularization, and good environmental adaptability

Inactive Publication Date: 2014-05-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantage is that the AOA algorithm requires the receiver to have the ability to perceive the azimuth and vertex angle of the incident light, so a sensor with a relatively high cost is required
In some cost-constrained application scenarios, this positioning system is not suitable

Method used

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  • Two-dimensional dynamic indoor locating system and method for visible lights based on direction of receiver
  • Two-dimensional dynamic indoor locating system and method for visible lights based on direction of receiver
  • Two-dimensional dynamic indoor locating system and method for visible lights based on direction of receiver

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] The positioning system of the present invention is as figure 1 As shown, it includes the downlink formed by the VLC (visible light communication system)-based downlink transmission module, the downlink reception module, and the uplink formed by the uplink transmission module and the uplink reception module.

[0030] The downlink sending module includes: downlink sending FPGA, driving circuit and white LED.

[0031] The downlink sending FPGA is used to generate the signal frame sent by the ...

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Abstract

The invention provides two-dimensional dynamic indoor locating system and a method for visible lights based on the direction of a receiver. The locating system comprises downlink receiving and sending modules as well as uplink receiving and sending modules, wherein the downlink sending module comprises a downlink sending FPGA, a drive circuit and a white light LED; the downlink receiving module comprises a photoelectric detector, a transducer, a downlink receiving FPGA; the uplink sending module comprises an uplink sending FPGA, a drive circuit and an infrared LED; the uplink receiving module comprises an infrared receiving module and an uplink receiving FPGA. Through light strength information received by the receiver and measured by the photoelectric detector as well as direction information of the receiver measured by the transformer, the downlink receiving module obtains a two-dimensional coordinate of the receiver by utilizing a two-dimensional dynamic indoor location algorithm, so that accurate indoor location is realized. Compared to the existing locating system, the locating system provided by the invention has the advantages of low cost, flexible application environment and the like.

Description

technical field [0001] The present invention relates to the technical field of visible light communication, in particular, to a dynamic indoor two-dimensional visible light positioning system and method based on the direction of a receiver. Background technique [0002] Currently, outdoor positioning and navigation services based on the Global Positioning System (GPS) have been applied to all aspects of our lives. However, due to multipath fading and interference from other radio equipment, it is difficult for GPS to achieve ideal results indoors or in densely populated places. Therefore, for positioning and navigation services in indoor environments, a new positioning system is needed. [0003] At present, the technologies used for indoor positioning mainly include ultrasonic technology, infrared technology, Bluetooth technology, radio frequency identification technology, etc. These positioning systems need to add new equipment investment indoors, the cost is relatively hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 侯忆楠肖石林余泽希毕美华何浩胡卫生
Owner SHANGHAI JIAO TONG UNIV
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