Visible light communication-based indoor positioning system and method
A visible light communication and indoor positioning technology, which is applied in positioning, radio wave measurement systems, and measurement devices, can solve the problems of large system maintenance costs, high system costs, and low accuracy, and achieve low maintenance costs, simple maintenance, and cost savings The effect of spending
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0047] Example 1:
[0048] Visible light communication transmits information by using high-speed bright and dark flickering light signals emitted by white light or colored light-emitting diodes that cannot be observed by the naked eye. It is a technology that has been used in indoor communication.
[0049] The indoor positioning system based on visible light communication in this embodiment includes a transmitter and a mobile receiver;
[0050] The transmitting end is composed of several transmitters distributed in various places in the room;
[0051] The transmitter includes an LED light source for outputting the position information of the transmitter as an optical signal;
[0052] The mobile receiving end is used for receiving the optical signal, converting it into an electrical signal, and extracting position information from the electrical signal.
[0053] In a specific use process, the LED light source outputs an optical signal with a flickering signal according to the...
Example Embodiment
[0054] Embodiment 2:
[0055] like figure 1 As shown, this embodiment is an indoor positioning system based on visible light communication, including a transmitter and a mobile receiver;
[0056] The transmitting end includes a plurality of transmitters distributed in various places in the room; the number and position of the transmitters are set according to the needs and the preset positioning accuracy;
[0057] The transmitter includes:
[0058] The first signal processing unit is used to generate and output a modulation signal capable of driving the LED light source from the position information of the first signal processing unit; if the transmitting end is located at position A, the first signal processing unit modulates its position signal - position A according to a preset The method modulates into a modulating signal identifiable by the LED light source and outputs it to the LED light source connected to it;
[0059] The LED light source is used to receive the modu...
Example Embodiment
[0064] Embodiment three:
[0065] The indoor positioning system based on visible light communication in this embodiment includes a transmitter and a mobile receiver;
[0066] The transmitting end is composed of several transmitters distributed in various places in the room;
[0067] The transmitter includes:
[0068] a first signal processing unit for generating and outputting a modulation signal capable of driving the LED light source based on the position information of the unit;
[0069] The LED light source is used to receive the modulated signal and convert it into an optical signal for external output;
[0070] The mobile receiver includes:
[0071] a photoelectric converter for receiving the optical signal and converting it into an electrical signal;
[0072] a second signal processing unit for receiving and demodulating the electrical signal to obtain location information;
[0073] The photoelectric converter is a solar cell; the solar cell receives the light sign...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap