Visible light communication (VLC) intelligent transportation system capable of supporting bilateral positioning

Abstract

The invention discloses a visible light communication (VLC) intelligent transportation system capable of supporting bilateral positioning. The system comprises a vehicle side visible light transmitting-receiving module, a street light side visible light transmitting-receiving module and the like, wherein each visible light transmitting-receiving module is composed of a visible light communicationtransmitting-receiving antenna (lens group) assembly, a signal modulation assembly, a signal demodulation assembly, a servo tracking assembly and the like. With the system of the present invention adopted, the most basic technical problem of vehicle precise positioning in an intelligent transportation system can be solved. With the system of the present invention adopted, a vehicle can perform visible light communication with street light sides during a driving process. According to the system, visible light communication signals sent by the street light sides are received; and the intensitiesof the visible light signals of the two street light sides are compared with each other, and whether the vehicle keeps running on lane center line (the exact lane position of the vehicle) can be judged.

Description

technical field [0001] The invention relates to a device and a method in the application field of an intelligent transportation system, in particular to a visible light communication (VLC) system between a vehicle and a fixed facility supporting bilateral positioning. Background technique [0002] Since the invention of the automobile, after more than a hundred years of development, it has become an indispensable means of transportation for people. The popularization of vehicles has also brought a series of problems including road congestion, traffic accidents, and exhaust emissions. In order to solve these problems, the industry has put forward the idea of ​​Intelligent Transportation System (ITS), whose core is to closely integrate and coordinate people, vehicles, and roads, and combine modern computer technology, electronic technology, communication technology and optimal control technology, etc. Establish a large-scale, all-round, and lasting urban road comprehensive ma...

AI Technical Summary

Problems solved by technology

Among the ITS solutions that have been proposed so far, millimeter-wave radar, short-distance wireless communication (IEEE802.11p), 3G / 4G mobile communication, etc. are mainly used, but there are problems including limited wireless spectrum resources, poor real-time performance, and high costs. Disadvantages [Pengju FANG, et al. A Visible Light Communication based Infra-to-Vehicle Intelligent Transport Demo System. IEEE ICCVE2015]

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