A BSTRACT “Collision avoidance system for drones,” protects the drone from collision from any obstacle, such as, a wall. Nowadays, in our day-to-day life, we have heard drone crashes which do not only cause machine loss, as well as, a great threat to people around. Whereas, drones are widely used in civilian and military fields in recent years. As drones are becoming common, it increases the threat of drone failures. A collision avoidance system is designed to protect people, as well as, machine loss. Each collision avoidance system contains two main parts: sensing and detection, and collision avoidance. Based on their characteristics, each part is explained in different categories. The idea behind the project is to protect drones from a collision. Whenever any obstacle is detected from the left side the drone must drift towards the right and same in all four directions. To detect the obstacle, the sensor used is “Infrared (IR) sensors”. Many IR sensors are used in all directions of drones for obstacle detection. To avoid collision with objects, these aerial vehicles are to be installed with a collision- avoidance system. In this project, we do present an approach for wall collision avoidance using IR sensors on a quadrotor. The presented approach is designed for the safety of drones indoor and outdoor. Keywords: Unmanned Aerial vehicles (Drones), Collision avoidance system, Sensing technology (Infrared sensor), Obstacle detection. SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology (2020); DOI: 10.18090/samriddhi.v12iS2.14 Collision Avoidance System for Drones Sakshi Sanjeev Katware 1 , Shraddha Bandgar 1 , Vishal G. Puranik 2* 1 B.E. Student, Department of Electronics and Telecommunication Engineering, JSPM’S Bhivarabai Savant Institute of Technology and Research, Pune, Maharashtra, India 2 Assistant Professor and HOD, Department of Electronics and Telecommunications Engineering, JSPM’s Bhivarabai Savant Institute of Technology and Research, Pune, Maharashtra, India Corresponding Author: Vishal Gangadhar Puranik, Assistant Professor and HOD, Department of Electronics and Telecommunications Engineering, JSPM’s Bhivarabai Savant Institute of Technology and Research, Pune, Maharashtra, India, e-mail: puranik.jspm@gmail.com How to cite his article: Katware, S.S., Bandgar, S., & Puranik, V.G. (2020). Collision Avoidance System for Drones. SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology, 12(SI-2), 69-74. Source of support: Nil Conflict of interest: None © The Author(s). 2020 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and non-commercial reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. I NTRODUCTION A A drone collision avoidance system is no doubt one of the greatest innovations to have ever been incorporated into autonomous vehicles. Collision avoidance is the ability of a drone to navigate safely through corridors and indoors without colliding with obstacles. The use of drones for indoor activities has in the recent past, gained wide popularity. Drones perform a lot of tasks that sometimes are considered dangerous for humans. Firefighters are now days using drones to enter buildings that are inaccessible and perform rescue missions without any human losses. However, the success of such missions greatly depends on the navigation system of the drone. 1 Without the collision avoidance systems, drones will collide with walls, flying objects, flying animals, or even humans, and thus, a mission failure, damages, and injuries to the collided or even the destruction of the drone itself. A collision avoidance system is a system designed to reduce or prevent collision accidents. Also known as a collision warning system, collision mitigation system, or pre-crash system, the system uses sensors or radars to detect any potential obstacle and send warnings to the pilot of a likely collision. Pilots can choose to ignore or take action. 2 However, some drones have been designed to detect and avoid obstacles by themselves without the pilot’s decision. Such drones operate more like a robot. 3-5 N EED OF P ROJECT • Nearly all drones have a first-person view that transmits the video from the drone camera to the remote controller, smartphone, or tablet. However, it is possible to lose this video transmission because of collision with any obstacle. • If you have flown a good bit out of the direct line of sight, without obstacle avoidance it is going to be impossible to fly back home safely without video transmission, if you do not have obstacle avoidance it could very well crash. • Drones are being used in many public areas and at events as they capture stunning films from unique angles. Unfortunately, there have been a few accidents which are not good. People should be safe at concerts or sporting events, so collision avoidance drones at these events is a must. ORIGINAL RESEARCH SAMRIDDHI Volume 12, Special Issue 2, 2020 Print ISSN: 2229-7111 Online ISSN: 2454–5767