BUS DETECTION DEVICE FOR THE BLIND

USING RFID APPLICATION

(IEEE 2009)

This paper outlines a bus detection mechanism for the blind in travelling from one place to

another. In order to get transportation independently, the blind use auditory touched clues like

walking stick or white cane. The limitation of the walking stick is that a blind person must come

into close proximity with their surroundings to determine the location of an obstacle. For that

basis, various devices have been developed such as the Sonicguide, the Mowat sensor, the Laser

cane and the Navbelt. However, these device can only assist the blind at a pedestrian crossing.

Therefore, the project is aims to develop a bus detection prototype using Radio Frequency

Identification (RFID) for the blind. The paper covers brief idea about the blind and RFID system,

review relevant papers and summary of current research. The review of RFID system compare

between families of auto-ID technology, the basic principle of RFID, the type of RFID tagging

and the antenna characteristic. The summary of current research discussed about the development

of prototype, the database system, the output mechanism and integration between hardware and

software. Database management will provided. The information such as bus route, final

destination and bus number are also provided.

This device consists of

1.Passive RFID on bus

2.RFID reader carried by Blind

3.Integrated voice player

Working:

The RFID passive module is placed near the door side of the bus. When blind person stand near

the door the module in his hand recognizes the ID of the bus and plays the details of route and

destination of the bus using the voice player. The rfid reader module with the person contains a

database regarding the details of the buses in that area.

We use ARM based LPC2138 micro controller to develop this system, one of the most

popular micro controllers on the market. The LPC2138 Micro controller includes 512kb of

internal flash Program Memory, together with a large 32kb RAM area . It can work up to 60Mhz

speed and RISC architecture accounts for its popularity. Peripherals like USART and PORTS are

ideal for this project.

SYSTEM MODEL

TECHNICAL KNOWLEDGE

Embedded C programming

Circuit Designing and Debugging

UART interfacing

Voice IC interfacing

RFID interfacing

Voice IC interfacing