ByD.SWETHA(07N81A0563)

INTRODUCTIONIndian Railways is having the worlds largest railway network.On the other hand it has faced large number of accidents due to the collisions, negligence of the signals etcEven though we have got many techniques of preventing these accidents NO METHOD CAN BE MORE EFFECTIVE AS THAT OF GPS.

Why GPS here?To avoid rail accidentsIt is highly efficientThe system is highly reliable and informations are highly secured. main function if GPS is to get the interconnectivity of the various points in the track

ig 1 : Communication link ahitecture

Microphone Sensors: Needs critical selection as huge amount of the vibrations of the noises are created that are not possible to get recognized from a large distance.Trace the vibrations and sends to DBMSProposed sensor-CARBONSENSORS used in telephone.Fibre optic wires:Transmit the traced vibration data to DBMS quickly.

Software and DBMS:1.Software is the programs that can perfors sometasks that are assigned to them.2.The DBMS is the Data Base Management Systemwhich can store a huge amount of the data in them.3.Software converts vibrations from sensors into somegraphical forms and transfer to DBMS which contains pre-loaded data that are analysed in normal conditions.

The on-board unit consists of communication satellite antennae, satellite positioning antennae, the on-board receiver system and communication interface devices, etc. The on-board unit can continuously measure different parameters, tag the data with time and position information, reports irregular conditions.

1. Need of the towers for the transfer of the details and the communication betweenotherestablishments, trains and the satellites.2. A visual display system to show the actual position of the trains along with other details like visual and audio warning systems. 3. Receivers and the transmitters tuned to proper frequencies and in accordance to the network.4. The train drivers cabin must be such that the driver will come to know about the track, weather, bridges and constructional status in advance. 5. Good Communication System. This can be achieved by the use of GPS for the communication.

Uplink Frequency -5.925 to 6.425 GHz.

Download Frequency -3.700 to 4.200 GHz.

may change as per the advancements that are made and the system requirements.

Consider two trains of same or different weights, speeds approaching towards each other in the same tack with GPS Network installed in it.The microphone sensors trace the vibrations 35km prior to its arrival. As two trains are approaching in the same track the vibrations gets excited. This produces emergency signal with alarm and this is transmitted to the control rooms and to loco.

1.Railway Safety2. Automation in the Work.3. Reduction in the Stress Levels because of the goodequipments and machinery.4. Time Delays: As every time the position of the train will be known thus there will not be any time delays.5. Train Traffic Control: due to continuous monitoring of the trains there will be a good train traffic control.6. Futuristic method: with this method it is possible to make fully automatic train network which may even not have the driver in it.

The implemention time is large and the cost is high to some non-technocrats.The survey says that the total loss for our government rates to few hundred crores.So just by investing a small sum of this loss, the accidents and the losses can be overcome once for all.

The benefits and advantages of the proposed method outnumber the problems and disadvantages.

By considering this method for the most important transport system in India and for the safety the costliest human life and the national property can be protected.

Thus the integration of GPS, sensors along with software systems can be effectively used to provide safety as well as huge income to the Indian Railways.

References:http://www.trimble.comhttp:// www.discoveryindia.comhttp://www.irsuggestions.orghttp://www.nasm.si.edu/gps/work.html

Thank you

** The benefits and advantages of the proposed method outnumber the problems and disadvantages.

By considering this method for the most important transport system in India and for the safety the costliest human life and the national property can be protected.

Thus the integration of GPS, sensors along with software systems can be effectively used to provide safety as well as huge income to the Indian Railways.*