Indoor/Outdoor Alert Systems for the Blind

We present three IEEE papers introducing different indoor and outdoor alert systems for the blind. Though each paper is based on a different and new technology, they all aim towards providing a wireless electronic system for easy navigation of blind both in the domestic as well as outside environment. This paper describes the development and implementation of the projects undertaken based on the three papers. In the first paper a radio frequency based identification system (RFID) has been introduced which helps a university student to find his/her path using RFID tags and readers. The second paper introduces a prototype for the recognition of various sounds from different emergency alert systems in the domestic environment and notifying the blind-deaf person using vibro-tactile or electro-tactile sensor unit. The third paper describes the construction and evaluation of navigation system that infers the user's location using only magnetic sensing.