eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2015-08-15 12 2 1503 1507 2200 article Archana 1 C. Chellaram 2 M. Rajalakshmi 3 Department of Electronics and Telecommunication, Sathyabama University, Chennai-600119.India Department of Biomedical Engineering, Vel Tech Multi Tech Dr.RR Dr.SR Engineering College, Chennai-600 062. India Department of Electronics and Telecommunication, Sathyabama University, Chennai-600119.India Currently, many researches has been carried to devise the navigation for blind people. Here, we propose an efficient system to aid the visually impaired in their navigation. User will be indicated about the nearing obustruction with closer ambiance. The basic concept behind this system is to detect the nearest hindarence through a stereoscopic sonar system and sends back vibro-tactile feedback to inform the user about its localization through a beep sound provided with voice indication for a differentiation between three sensors imbibed. The proposed system aims in increasing the mobility for visually impaired by offering various sensing abilities. The device is light, portable, but range limited to its own size.   https://www.biotech-asia.org/vol12no2/obstruction-recognition-for-visually-challenged-patients/ Visually impaired; Obstruction; Steroscopic sonar System; Sound Buzzer