Multi-light source optical imaging communication system independent of shooting orientation

Abstract

The present invention relates to a multi-light source optical imaging communication system that has nothing to do with shooting orientation, the system includes a sending device and a receiving device; the sending device includes a sending end processor and an LED light source, and the receiving device includes an optical camera and a receiving end processor ; It is characterized in that the LED light source includes N asymmetrically arranged data sending LEDs, N≥3; the sending end processor 11 sends data information by controlling each data sending LED to flash; the optical camera obtains the video image of the LED light source, and receives The end processor demodulates the video image and arranges the bit data sent by the N data sending LEDs in the set order to obtain the original data information. The invention can solve the problem of LED calibration caused by symmetrically arranging LEDs in any orientation of the receiving device, and the realization is simple and convenient, and can be realized by transforming existing lamps and combining smart phones.

Description

technical field [0001] The invention belongs to the technical field of visible light imaging communication, and relates to a multi-light source optical imaging communication system independent of shooting orientation. Background technique [0002] With the development of CMOS technology, CMOS image sensors are embedded in many electronic devices, such as mobile phones, computers and various monitoring devices. A special visible light communication technology emerged at the historic moment—visible light imaging communication (Optical Camera Communications, OCC). OCC uses an image sensor as a light receiving device. Compared with the traditional VLC technology, its main advantage is that the high penetration rate of communication equipment greatly reduces the construction cost and network complexity of OCC; the spatial resolution of the image sensor enables OCC to naturally support Multiple Input Multiple Output (MIMO). Output, MIMO) technology, so as to easily achieve commu...

AI Technical Summary

Problems solved by technology

Under normal circumstances, multiple LED light sources are mostly arranged symmetrically, but in multi-light source optical imaging communication, the arrangement of symmetrically arranged multi-light sources will cause the same sending device to send the same information due to the shooting orientation, and users in different orientations can analyze receive different information

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