Abstract:
The term RFID describes the use of radio frequency signals to provide automatic identification of devices. The overall goal is to produce RFID reader that is capable of receiving more than one bit of information from the RFID Tag and to also design an oscillator to modulate the signal on the receiving side. The Audio Guidance System allows visually impaired users to simply press a button which is place on stick as many times such as one, two, three and four respectively in order to reach at that number of place or room with the help of audio instructions inside the building area. These instructions are saved in radio frequency detection circuit which detects the previous and next active tags and transmit these instructions to the user with the help of RF reader which is placed inside his bag having microphone connected to it, This system is a portable unit that can easily be carried and operated by a visually impaired person to reach their desire destination without relying on any person or pet dog. The technology has reduced this effort in a self-dependent way. Besides it, an obstacle detector that detects the obstacles from the surface and triggers the buzzer or produces vibration when it gets any hurdle to avoid sudden accident.
