Abstract
One of the features of an intelligent transport system is the formation of communication channels between vehicles. Vehicle-to-vehicle communication will help reduce the number of road accidents. Li-Fi technology is considered as a method for communication. Li-Fi uses visible light for data transmission. A single source of radiation may not be sufficient to provide a certain signal level at the receiver, so multiple sources must be used. Also, signal transmission should be in all directions in the horizontal plane. The study addresses the problem of designing optical systems of circular radiation with several multidirectional sources. It proposes the modification of the ray mapping method for the task of designing optical elements for the Li-Fi wireless communication technology between vehicles. Also, it describes the algorithm for calculating optical systems of circular radiation for a signal source and signal receiver. Finally, the results of calculating and virtual prototyping of devices designed by the proposed method.
Highlights
IntroductionA few works are devoted to the methods of designing refractive optical systems with freeform surfaces for radiation sources as well as radiation receivers within the Li-Fi communication systems
There is an increase in the number of vehicles on the roads, which causes certain traffic control problems
A few works are devoted to the methods of designing refractive optical systems with freeform surfaces for radiation sources as well as radiation receivers within the Li-Fi communication systems
Summary
A few works are devoted to the methods of designing refractive optical systems with freeform surfaces for radiation sources as well as radiation receivers within the Li-Fi communication systems. 2. The use of a single combined system does not provide signal transmission and reception in all directions in the horizontal plane, which is necessary to ensure communication between vehicles. It is worth noting that the experimental application of the Li-Fi technology with help of the vehicle front and rear lights does not provide signal transmission and reception in all directions in the horizontal plane, which is a significant limitation in communication between nearby vehicles. This paper proposes a method for designing hybrid optical systems that emit and receive radiation from all directions in the horizontal plane, and provides an example of using such systems for the communication between vehicles using the Li-Fi technology
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