RFID-G Based Navigation System For Visually Impaired To Work at Industry

Abstract : The RFID G Technology is the Tag Grid technology. One of the technical challenges for the modern society to detect and find a solution for visually impaired, with increased security and service motto towards the society helped to bring a solution which would help the visually impaired in the industries and other companies. Here we had come out with a prototype as a way of finding a solution to the visually impaired. The navigation assistant technology using RFID Tag Grid minimizes the dependency. The readerused in this system is embedded in the mobile and shoes to avoid dependency on travel. The RFID reader matches with the information specified to that ID and a voice signal is generated. Wireless RF links is placed in the Bluetooth device/ headphone for voice guidance. The proximity sensing unit is an auxiliary unit is added as a solution to address unexpected and non-mapped obstacles in the user’s path. Basically it contains ultrasonic Sensor Unit interfaced with microcontroller which is inter-linked to a vibrator that would be activated when nearing obstacles. This system is technically and economically feasible and may offer a maximum benefit to the disabled.
 EXISTING SYSTEM :
 ? The most basic form of Bluetooth connectivity exists in the form of the master and slave. ? A master Bluetooth device is connected and communicates with a number of slave devices in the network. ? The system uses both Wi-Fi and Bluetooth requiring the user must connect to both networks when entering a building to determine their location in the building. ? RFID devices can be compared to bar codes or magnetic strips on credit cards, where each bar code or strip is a unique identifier represented by a number.
 DISADVANTAGE :
 ? The issue we diagnosed and detected is, when the visually impaired persons enter into a building they would be notfamiliar with the environment they may miss the path often. ? A prototype has been designed to find a solution to solve the above listed issues in an effective, easier and in an economical way using RFID technology both in indoor and outdoor for visually impaired. ? The size of the system can be reduced by choosing the smaller size reader it would reflect an issue in the sensing the tags. ? The major drawback of the system is loss of signals because of the greater ranging in the transmitter and the receiver and it consumes more power and the software development is a complex task to carry out.
 PROPOSED SYSTEM :
 • The proposed RFID technology in order to design the navigation system by providing information about their surroundings also developed. • On the other hand, Pocket-PC based Electronic Travel Aid (ETA) proposed to help visually impaired people to travel at indoor environment. • Ultrasonic range sensor is used to detect surrounding obstacles and electronic compass is used for direction navigation purpose. • The retractable stick is used as the replacement of conventional white cane which is commonly used by visually impaired people for navigation purpose.
 ADVANTAGE :
 ? Mobiles and wireless technologies can be used to experience the navigation system in a better and effective way into an intelligent environment. ? This system gave better results in real time performance and improves the efficiency of blind travel at indoor environment. ? To provide an efficient and user-friendly navigation tools, a navigation device is developed by using passive radio frequency identification (RFID) transponders which are mounted on the floor such as on tactile paving to build such as RFID networks. ? In order to provide an efficient and user-friendly navigation tools, a navigation device is developed by using passive RFID transponders which are mounted on the floor such as on tactile paving to build such RFID networks.

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