Indoor visible light communication positioning system
A technology of visible light communication and positioning system, applied in the field of indoor visible light communication positioning system, can solve the problems of complex information modulation and demodulation device, difficult comprehensive management and operation, many equipment and components, etc., to achieve easy management and maintenance, good contact contact , the effect of simple structure
Inactive Publication Date: 2017-07-07
深圳市金叶光线发展有限公司
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Problems solved by technology
However, the existing positioning system based on visible light communication uses a large number of equipment and components, which is difficult to comprehensively manage and operate, and its information modulation and demodulation device is too complicated and the cost is high. The modulation method is very mature, and it is already available in existing display devices, such as mobile phones, tablet computers, notebook computers, etc., and the modulator / demodulator in it can be used
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[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0046] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0047]...
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The invention discloses an indoor visible light communication positioning system which comprises an LED light source, an information storage device, a carrier frequency control device, carrying devices and displays. Configuration information which is already subjected to signal modulation processing is stored in the information storage device and includes positioning information; the displays are arranged on the carrying devices and are provided with photoelectric converters and signal demodulators in a connected manner, the photoelectric converters are used for receiving light signals transmitted by the LED light source and converting the light signals into electric signals, and the signal demodulators are used for receiving and demodulating the electric signals so as to obtain the configuration information. The indoor visible light communication positioning system has the advantages that the configuration information which is loaded into the LED light source is modulated signals, demodulation is carried out at receiving ends by the aid of the signal demodulators in the displays, accordingly, a tedious information modulation and demodulation device can be omitted, and system structures are simple, convenient and practical on the premise that indoor positioning, guiding and propaganda purposes are achieved by the indoor visible light communication positioning system.
Description
technical field [0001] The invention relates to the field of visible light communication, in particular to an indoor positioning system for visible light communication. Background technique [0002] Visible light communication (visible light communication) is a kind of wireless communication and optical communication. It refers to the wireless communication technology that uses "visible light" visible to the naked eye to transmit information, referred to as "VLC". Compared with the current wireless local area network Wifi, visible light communication is also called Lifa in China. [0003] In recent years, LED lighting has developed rapidly. Compared with traditional lamps, LED lamps have energy-saving and environmental protection features such as high light intensity, high luminous efficiency, high reliability, and long service life. The theoretical basis for high-speed modulation and high-speed transmission of visible light communication; LED lighting is powered by a DC co...
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IPC IPC(8): G01C21/00H01R13/04H01R13/10H01R13/62
Inventor 李伟
Owner 深圳市金叶光线发展有限公司
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