31.BUS LOCATION ANNOUNCEMENT SYSTEM

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31.BUS LOCATION ANNOUNCEMENT SYSTEM Powered By Docstoc
					www.svsembedded.com SVSEMBEDDED svsembedded@gmail.com,
         CONTACT: +91-- 9491535690, +91-- 7842358459
         BUS LOCATION ANNOUNCEMENT SYSTEM

The most common modes of public transport are the buses. When we arrive at a bus stop,
we are not sure if the bus that we want to board has left the bus stop or not. We don’t
even know how much time it will take for the bus to arrive. We have designed this
project trying to solve this problem to provide better service to the passengers using
RFID.


RFID tags are categorized as either active or passive. Active RFID tags are powered by
an internal battery and are typically read/write, i.e., tag data can be rewritten and/or
modified. An active tag's memory size varies according to application requirements;
some systems operate with up to 1MB of memory. Passive RFID tags operate without a
separate external power source and obtain operating power generated from the reader.
This project uses passive tags. Read-only tags are typically passive and are programmed
with a unique set of data (usually 32 to 128 bits) that cannot be modified. The reader has
three main functions: energizing, demodulating and decoding. The antenna emits radio
signals to activate the tag and to read and write data to it.


Each bus contains a RFID tag which contains the bus number. And each bus stop
contains a RFID reader which reads this TAG. All the bus stops are connected to each
other and when a bus is detected at a stop, the bus number is then sent to the next bus
stop. The next bus stop receives the bus number and displays it on the LCD along with
the time at which the bus has arrived at the previous bus stop. Display is cleared only
when the bus arrives at this stop and then the bus number is then sent to the next Bus
Stop.


Each bus stop consists of RFID reader whose data is sent to the microcontroller, which
then sends the data to the next bus stop and LCD displays the bus number and the time at
which the bus has arrived at previous bus stop.




www.svsembedded.com SVSEMBEDDED svsembedded@gmail.com,
         CONTACT: +91-- 9491535690, +91-- 7842358459
www.svsembedded.com SVSEMBEDDED svsembedded@gmail.com,
         CONTACT: +91-- 9491535690, +91-- 7842358459
SOFTWARE AND HARDWARE TOOLS:
Software Tools:
   1. Keil compiler
   2. Orcad.
   3. Proload


Hardware Tools:
   1. Microcontroller AT89S52.
   2. RFID reader
   3. MAX232
   4. LCD
   5. RTC



BLOCK DIAGRAM




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         CONTACT: +91-- 9491535690, +91-- 7842358459

				
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