Obstacle Detection of Robot

Abstract

The obstacle detection field is a very broad one and a lot of obstacle detection systems. Almost all obstacle detection systems use a combination of passive-active technology, and in General the best solution is obtained using a vision system combined with a distance sensor like radar. After that, the data is transmitted to the processor. Hence, the processor is going to decide the proper commands and then it sends them to the driver and thus the robot will be followed in the absence of obstacle detected. In this project mainly whenever robot senses any obstacle automatically diverts its position to left or right and follows the path. Robot consists of two motors, which control the side pair wheels of each and help in moving forward and backward direction. Robot senses the object with help of obstacle sensor. IR pair is used for detecting the obstacle. The two basic parts for working with IR are the emitter and the detector. The emitter is typically an LED that emits near-infrared light. Infrared (IR) light is electromagnetic radiation with a wavelength longer than that of visible light, measured from the nominal edge of visible red light at 0.74 micrometres (µm), and extending conventionally to 300 µm. These wavelengths correspond to a frequency range of approximately 1 to 400 THz, and include most of the thermal radiation emitted by objects near room temperature. Microscopically, IR light is typically emitted or absorbed by molecules when they change their rotational-vibration movements. We have used two D.C motors to give motion to the robot. The construction of the robot circuit is easy and small .The electronics parts used in the robot circuits are easily available.