SAM Smart Assistance Module in wheelchair

this is a video of a demo in which a smart assistance module is fixed in order to help the blind in aiding them to use wheelchair.it senses for obstacles and creates vibration as well as through vocal aiding the user will be able to detect the obstacles in the path.sam has the ability to discriminate with five system encorporated in this.it supports the use of sensors,vocal assistance,vibrometers,a power drive unit and a technology helping to use wheelchair though steps..!