Vehicle Collision Avoidance System Using Li-Fi

*P.M. Benson Mansingh, G. Sekar and T. Joby Titus*

## **Abstract**

In recent times, large numbers of road accidents occurring all over the world are mainly due to collisions between vehicles. More than 1.2 million peoples were died in road accidents in 2019, according to the World Health Organization (WHO). Human safety features are much needed in the manufacturing of vehicles. The proposed method mainly focuses on reducing the number of accidents in our daily lives by avoiding collision between the vehicles. There are several factors corresponding to such difficult conditions that may results in death or disabilities. The causes are sudden loss of concentration of the driver, braking failure and stability issues. These criteria can be reduced only if there is a possibility for communication between the vehicles and the drivers in order to avoid accidents. There are various vehicular communication system models like Dedicated Short Range Communication and Vehicular Ad-Hoc network operating less than 5.9 GHz. These radio frequency based communication also has some limitations such as interference, congested spectrum and security. These drawbacks can be reduced by implementing the Visible Light Communication (VLC) in vehicles. It provides larger bandwidth, security, interference immunity, and high data rate. High speed data transmission and reception can be achieved using visible light based data communication system. This technology is known as Light Fidelity (Li-Fi). This chapter presents the innovative method to evade collision between two vehicles (rear and front). This communication system is cost effective with high speed data rate capabilities.

**Keywords:** Li-Fitechnology, Arduino Microcontroller, Visible light communication, Vehicle to vehicle communication, Proteus software

## **1. Introduction**

Li-Fi is transmission of data through illumination by taking the fiber out of fiberoptics, sending data through an LED light bulb that varies in intensity faster than thehuman eye can follow. As this technology offers a huge bandwidth, it is unlicensed socan be used for many applications such as streaming video and music, access to theinternet, etc. The data can be transmitted through LED light which is presently observed in Electronics Devices like Hamradio, Television remotes, etc. As the number of devices connected to a particular wireless network increases the speed of the network decreases. So, in order to overcome this problem Data transmission through LED is done. Generally, data is transmitted using EM waves or else through Data Illumination.

In future data can be transmitted through the light in a room for laptops, smartphones, and tablets. In the proposed system, LED light emits visible light with location data to the visible light receiver and the receiver receives the data. The embedded system calculates the optimal path to a destination and speaks to the visually impaired through a headphone or speaker.
