Research Article

Geometry Based Approach to Obstacle Avoidance of Triomnidirectional Wheeled Mobile Robotic Platform

Figure 3

Effect of type and orientation of obstacles on the response of ultrasonic sensors.
(a) Working principle of Ping Ultrasonic Sensor
(b) Flat obstacle at angle to Ping Ultrasonic Sensor
(c) Too small obstacle in front of Ping Ultrasonic Sensor
(d) Too soft obstacle in front of Ping Ultrasonic Sensor