Surveillance FPV Drone with Obstacle Avoidance System
Sunay Dharwadkar1, Sarvesh Harmalkar2, Chinmay Nagzarkar3, Vivkanand Tendulkar4

1Sunay Dhrawadkar*, Goa College of Engineering Ponda Goa, India.
2Sarvesh Harmalkar, AITD Engineering College, Goa, India.
3Vivekanand Tendulkar, Goa College of Engineering Farmagudi, Goa, India.
4Chinmay Nagzarkar, PCCE College of Engineering Goa , India. 

Manuscript received on August 01, 2020. | Revised Manuscript received on August 05, 2020. | Manuscript published on September 30, 2020. | PP: 17-20 | Volume-9 Issue-3, September 2020. | Retrieval Number: 100.1/ijrte.C4204099320 | DOI: 10.35940/ijrte.C4204.099320
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Abstract: The unmanned air vehicle (UAV) is mostly used in inspection and surveillance operations recent. The UAV is also termed as vertical take-off landing (VTOL), since it is capable of vertical take-off and landing without need of a runway. The big tunnels, infrastructure and large bridges are inserted using UAV by photographic inspection. UAVs are also used for surveillance purposes by the military and by the security guards. Since this is a new technology of the last decade, deep research has to be done. UAVS have the cross structure arrangement to which the rotor blades are attached at the end points of cross beams. These rotors are driven by the DC brush motors and motors are powered by the lithium ion rechargeable battery. The working principle of quad- rotors is the same as the chopper by controlling the rpm of each rotor blade, due to which the gyroscopic torque will act and the vehicle will move in the desired direction. To hold the quad- rotor at a stationary position at some height constant rpm of all rotors has to be maintained. This signal is given by the controller from some distance, which is received by the, and then it processes the signal and drives the motor via the flight controller and drives the rotors. A quad- rotor is equipped with a high quality camera for photography and video shooting during surveillance. Since a quad rotor is manoeuvring in air, the wind may exert a drag force and take it along with it and the quad rotor may hit any obstacle or inspection objects. To avoid this, it is equipped with the ultrasonic sensors which is capable of sensing the obstacle and realize collision avoidance between wall or any object. 
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