quadcopter with ostacle avoidance.pptx
- 1. QUADCOPTER WITH OBSTACLE AVOIDANCE GUIDE: Prof. NEETHU SUSAN RAJAN TEAM MEMBERS JOANNA JOHN THOMAS JEEVAN JOSE MONS JOSEPH SHERIN REBA PHILIP
- 2. COMPONENTS USED Arduino Uno Electronic Speed Controllers Voltage Regulator Brushless motors Bluetooth module 9v LiPo Battery Drone frame Propellers Ultrasonic sensor
- 3. INTRODUCTION A quadcopter is a helicopter which has four equally spaced rotors, usually arranged at the corners of a square body . Commercial quadcopters found in the market only have necessary functions and does not include any collision avoidance system , but still costs very high. Since quadcopters are airborne , they are prone to collisions than any other aerial vehicle. A quadcopter collision may be as fatal as people getting injured , irreversible drone damages , damages to other assets etc.. Our proposed idea is to eliminate these accidents by introducing a obstacle avoidance system to drones such that they can detect and avoid obstacles , thereby avoiding accidents.
- 4. What is obstacle avoidance? Obstacle avoidance is a means of a robot being able to move around in an environment without colliding with surrounding objects.
- 5. Continuation….. Obstacle avoidance is accomplished by moving vehicles on the basis of the sensorial information. What is critical about obstacle avoidance concept is , the growing need of usage of unmanned aerial vehicles in urban areas , especially in military and commercial applications where it can be very useful.
- 6. Implementation using Ultrasonic Sensor An ultrasonic sensor is an electronic device that measures the distance of a target object by emitting ultrasonic sound waves, and converts the reflected sound into an electrical signal.
- 7. Continuation….. On the quadcopter , the ultrasonic sensor having a maximum range of 4m is placed in the front side, constantly emitting ultrasonic waves. The drone is controlled from the ground with a controller . The drone prioritize the controll signal from the controller as long as an obstacle is absent. Whenever an obstacle is detected ,the drone gives less priority to the controller signal ,and specific algorithm is executed. The algorithm defines how the drone should act whenever an obstacle is detected.
- 8. Algorithm Is an obstacle present ? Yes Stop Turn right Is an obstacle present ? Yes Turn back Move 100 cm forward Turn Right Is an obstacle present ? No Move 100 cm forward Turn left No
- 10. Simulation The model and simulations of the drone are made on Webots . Webots is an open source and multi-platform desktop application used to simulate robots. It provides a complete development environment to model, program and simulate robots. It has been designed for a professional use, and it is widely used in industry, education and research.
- 11. Applications Could be implemented in commercial drones to avoid collisions and thereby saving money and avoiding injuries to people. Obstacle avoiding drones can be used in videography so that drone pilots could focus on the video footage itself than on the obstacles. They can also be used in dangerous environments, where human penetration could be fatal. Military applications .
- 12. Limitations The proposed system only mitigates human errors. The drone is not fully autonomous , thus requires a pilot to operate the drone. Since ultrasonic sensors use high frequency sound waves , operating the drone in noisy environments may disrupt obstacle avoidance. Movement speed of the drone should be kept below 20 kmph for obstacle avoidance. Multiple ultrasonic sensors should be used for more effective obstacle avoidance.
- 13. Future scope Advanced obstacle avoidance algorithm along with more sensor arrays could make the drone fully autonomous.
- 14. THANK YOU