Study of improved fuzzy control anti-collision method

There are 37 million blind people in this world which calls for an urgent need of a real-time and intelligent guiding device. Based on the blind´s walking characteristics, this paper builds a multi-ultrasonic sensors guiding hardware platform for the blind, proposes an improved anti-collision guiding algorithm based on improved fuzzy control, and realizes the algorithm by programming on the hardware platform. This algorithm uses the distance and orientation information of obstacles gained by multi-sensors as the input of fuzzy logic, and finally gives out the guiding information for the blind as output. It makes full use of all the output information of the fuzzy control. Besides, the algorithm doesn´t only provide the blind walking direction information, but also provides the blind walking angle as auxiliary information. Experiment shows that this algorithm can effectively guide the blind people to avoid obstacles.