High-speed camera applied to communication under visual light dynamic environment and communication method thereof

Abstract

The invention discloses a high-speed camera applied to communication under a visual light dynamic environment and a communication method thereof. The structure of the high-speed camera comprises a lens, a hybrid sensor, a digital signal processing chip and a PCB, wherein an LED is used as a transmitter which flickers at high speed for transmitting signals, the lens is used for shooting scenery ina receiving field and projects a generated optical image to the hybrid sensor, an analog signal is converted to a digital signal via the hybrid sensor, then the digital signal processing chip is usedfor processing the digital signal, and the communication area in the hybrid sensor is used for accurately recognizing and high-speed tracking the transmitter in the image. The high-speed camera applied to communication under the visual light dynamic environment has the advantages of both the photodiode and the high-speed camera, namely high transmission rate and simple in detection of the transmitter, and meanwhile is enough small in size, relatively low in cost, and can track the transmitter in real time and at high speed without artificial movement, so that the visual light dynamic communication between the transmitter and the receiver is achieved, and the extremely strong innovativeness and practical effect are provided.

Description

technical field [0001] The invention relates to the technical field of visible light communication, in particular to a high-speed camera for communication in a dynamic environment of visible light and a communication method thereof. Background technique [0002] In the field of intelligent transportation systems (ITS), there are many studies on visible light communication (VLC) using LEDs. LEDs have various advantages such as long life, compact size, high visibility, and low power consumption compared to other lights. Therefore, LEDs have been applied to some traffic lights, car tail lights, displays, lighting lamps and so on. Utilizing these characteristics, LEDs can be applied in high-speed response and visible light communication. Visible light communication has the characteristics of being immune to radio interference, saving radio resources, safe for the human body, and widely used in manufacturing infrastructure. [0003] In the research of visible light communicati...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to accurately detect and track the transmitter due to the location of the camera being different from that of the photodiode

Also, tracking is slow due to the camera's low frame rate

In contrast, high-speed cameras can easily detect and track transmitters without moving the camera, but the transmission rate is low because it depends on the frame rate of the high-speed camera

And neither of these systems are suitable for use in a car because of their large size and high cost

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