期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：4
页码：11375-11378
出版社：IJECS
摘要：Today technology is improving daily in different aspects in order to provide flexible and safe movement for the people.Currently the most widespread and used mean by the visually impaired people are the white stick, however it has limitations.With the latest technology, it is possible to extend the support give to people with visual impairment during their mobility; thispaper proposes an economical ultrasonic stick for visually challenged people, so as to gain a personal independence and freefrom the external help. A portable user friendly device is developed that can identify the obstacles in the path using ultrasonicsensors and Camera. Ultrasonic sensors can scan three different directions (at 180o). Camera can be used as an alternativetool in the places that surrounds with the low signal coverage, a microcontroller, buzzer and vibrating motor. The buzzer andvibration motor is activated when any obstacle is detected. GPS system provides the information regarding to his currentlocation. SMS system is used by the blind to send SMS message to the saved numbers in the microcontroller in case ofemergency
关键词：Ultra sonic sensors; GPS-L10 modem; GSM SIM 900D modem.
