23-06-2012, 04:03 PM
GSM AND RFID BASED BUS LOCATION ANNOUNCEMENT SYSTEM
GSM & RFID based bus location announcement system (2).doc (Size: 38.5 KB / Downloads: 40)
ABSTRACT
In this project, we incorporate RFID technology into a navigation system to improve the accuracy. The skeleton of the idea is as follows: install RFID tags on roads in a certain way, store very accurate location information along with other necessary information in the tags, add an RFID reader module to the navigation system, and use this new location information to produce highly accurate location information. With this scheme, the accuracy of positioning can be dramatically improved, especially in tunnels and in downtown areas. Preliminary results show that this idea is feasible.
The RFID positioning can be divided into four steps: in the first step, install RFID tags on roads in a certain way, store the very accurate location information along with other necessary information to the tags, add an RFID reader module to the navigation system, and use this new location information. Apart from the RFID system, we also propose to use a tag database. Due to the memory constraint on the tag and the data size that needs be written in a tag, the use of a database for tags is a necessary condition. In addition, the speed of the RFID communication also makes the use of the tag database indispensable.
Preliminary results show that the RFID communication speed does not solely depend on the bit data rate in the specification. Nonetheless, it will be shown that retrieving ID from a tag can be done fast even at a high velocity (by the high velocity we mean 150km/h). Another performance study on the tag database access time indicates that the access time is marginal.
From GSM the data is communicated to the microcontroller through serial communications which will intern show u the location address which is predefined in the controller for the particular location .where as in GSM communication it is restricted to a specified area when ever object moves in that specified area Rfid transmitter sends the location address to the receiver which is attached to the respective bus stop which will communicate with the controller to decode the address of the location. Then the controller enables the voice chip for the particular address location .through the voice chip it is interfaced to the speaker to announce the address of the that particular location at that bus stop.