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This paper is to express ourthoughts that is used for automatically close or opens the mobile platforms inbetween the train track.

The “mobile platform” it means a bridge connects thetwo platforms through which the pedestrian can walk on it to reach the nextplatform. Sensors are placed on the two sides of the train track. If the trainarrives and reaches the sensor placed before the receiver side the mobileplatform will close automatically and allows the train to go through tracks andwhen the train departs  the sensor thatis placed after the receiver the mobile platform will open the bridgingplatform  automatically.

Themicrocontroller will manage this process by using infrared sensor. So onsensing the train on one path controller will give pulses to the stepper motorto close the mobile platform automatically.Keywords: mobile platform, pedestrian, infraredsensor, microcontroller.Abstract:In this Paper, we proposed anidea called mobile/automated platform that will automatically open/close themobile platform based on the sensory system of train arrival and departure.Sensors (IR Sensors) are placed on the both sides of the platform where theautomated platform is fixed. The sensor that detect the train motion when itarrives, that  is located at 2km distancefrom the automated platform to disconnect the bridging and allows the train topass through the track. The other sensor is placed at 10m distance from automatedplatform that sense after train leaves the station and makes the automatedplatform for bridging the two platforms and allows the passenger to cross thegrade from one to another.

By using switches it can also be controlledmanually. The purpose of implementing this idea is to overcome the usage ofsubways and over bridges to cross the platforms. The present system is verydifficult to use, especially for handicapped persons and aged persons.Sometimes, the passengers highly stress out with transit time.

So, they supposeto use the train tracks directly. In some cities there are elevators to makethe passengers ease in crossing the bridges. Even this does not helps thedisabled persons to go with the wheel chairs.Keywords: mobile platform, pedestrian, infraredsensor, sensory system, microcontroller.INTRODUCTIONIndiatransportation mode has been highly depends on train. It is evident from dailynewspapers and TV channels that 40% of train accidents are due to use of tracksdirectly to cross the platforms and level crossing. The read sensor senses andsends a signal.

Thedevelopment of the most popular devices for automatic level crossing and gateswitching system started about few years ago and continues to emerge. In therecent years, there is a rapid increase in accidents that might be due toseveral reasons like by level crossing, direct platform crossing etc…, althoughthe automated level crossing, elevators, embedded system for crossing theplatforms is available. Here I propose a automatic mobile platform for easilycrossing the platform from one to another. Insteadof crossing the platform directly or by using the over bridges, thisautomatic open/close system is displayed on LED. This will be also useful forboth disabled persons and elderly persons.

This system is compact, flexible andonly takes less power to operate making it more reliable to use. The aims andobjectives of this work includes1)Basic object of this project is to design a portable embedded system.2) Developing an economical andsimple solution.3)Cost effective, reliable method and signal conditioning. MOTIVATIONNow a day the transportation isbecomes a part of our life. Especially in railway transport system. Humanbeings have been gifted by nature; by crossing the platforms directly willleads to accidents.

Unfortunately, not everybody possesses in out of danger. InIndia, there are around 44% of people are dies due to this level crossingdirectly without using the over bridges. This idea will be more helpful toevery passenger. OBJECTIVEThe project proposed here isuseful not only for the elderly persons, but also for the deaf and blindpersons. The objective of this work includes a mobile platform for effectiveplatform crossing aiding the physically challenged and elderly persons. Aportable embedded system is designed such that large number of users will getbenefited.

PROPOSEDSYSTEM.It saves the time for passengersto cross the next platform. The sensing is made continuously whenever the trainsarrive and pass through, which automatically close/open the mobile platform ispartially, automated which is beneficial for passengers to cross the rail gradecrossing. This method will be more comfort for scheduling the train timings forreaching the particular destination and also for crossing the suitableplatforms. And we have controlled the platform manually using the wirelesscommunication method.ADVANTAGESØ Reducethe chances of human error.Ø Reducesthe time consumption.Ø Fatalitiesare less.

Ø Enhancereliability near level crossing and at platform crossing.SYSTEM REQUIREMENTS HARDWAREREQUIREMENTS1.      Controller board2.      Pic16f877a3.

      Lcd Display4.      Motor5.      Zigbee6.      Switch7.      Power Supply Unit8.      Audio BoardSOFTWAREREQUIREMENTS1.      MPLABXIDE2.

      Proteus3.      Embedded c POWER SUPPLY UNIT: The main component is power supply unit. The 230V ac supply is convertedinto12V ac supply through the transformer. The output of the transformer hasthe same frequency as in the input ac power. This ac supply will be convertedinto dc supply by the diodes.

 LCD DISPLAY: LCD: It is a type of display used in many portable computer.LED: It is asemiconductor light source used as an indicator. It gets the information fromthe microcontroller. Here it is used to display whether the pedestrian cancross the platform or not. IR SENSOR: IRSENSOR is a device that emits infrared radiation in order to sense some aspectof its surroundings. It can sensethe heat of an object and detection motion.The radiation is invisible to our eyes but can be detected by an infraredsensor that interrupts it.

Here the sensor will detect the train motion andintimates to the Microcontroller to close/open the Mobile platform. MICROCONTROLLER:PIC16f877a : It consist of a memory which is used to permanently save theprogram being executed. PIC is a specialized microcontroller chip (PeripheralInterface Controller). It is aprogrammed circuit that carryout the task with timer.

 AUDIO INDICATOR:  It just indicates to the passengerseither they can cross the platform or not. This indication will be in audioformat that will helps us to understand the message. BIDIRECTIONAL MOTOR:  The motor is used to convert theelectrical energy into mechanical energy. i.e. power supply will be changed tomechanical energy that helps to activate the platform in both direction. The bidirectional motor is helps the mobileplatform to open and close immediately when the command is  received from the micro controller.

 ZIGBEE:  It is designed for long batterytimings at low cost and low power consumption. It is used to control the sensornetworks  in wireless technology.  INTRODUCTIONTO SYSTEM DESIGNThissystem design will increases among physically impaired persons, passengers andelderly persons to meet their common needs. This project describes the use ofreducing the time of climbing the bridges. The mobile platform handles thisprocess of taking them to the next platform. This working procedure will recordby the microcontroller that integrates all the devices.

The instruction will beinformed to the passenger to cross the platform or not. WORKING PRINCIPLE:1.SENSINGUNITTheIR sensors are placed in the both sides of the train tracks. Totally 4 IRsensors are used in this concept,1.     Nearbystation confirmation(if necessary/less distance).2.     Platformconfirmation3.

     Platformreached confirmation4.     Trainleaving detectionThe first three sensors are fixedbefore the Receiver that detects the presence of train or entering into thestation and alerts the platform to allow the train to go through and the lastsensor is placed after the receiver part that detects the train leaving fromthe station. The IR sensor emits theinfrared radiation to detect the obstacle in its surroundings that interruptsthe radiation.

Radiation is not visible to human eyes, but it detects theobject (train) movement. The received reflected rays will be transferredthrough the zigbee.2. COMMAND MESSAGE PASSING UNITThe frequency that is received fromthe IR sensor will be matched with the ZigBee frequency and it communicateswith its end devices.ZIGBEE ARCHITECTUREIn ZigBee there are 3 main components1.      ZigBeecoordinator(ZC)2.      ZigBeeRouter(ZR)3.

      ZigBeeEnd Devices(ZED) Zigbeesystem structureThe zigbee coordinator will be connectingwith the other router and end devices. Here the end devices refers the IRsensor, microcontroller, LED/LCD etc., The zigbee transfers the train arrivaland departure message that is sensed by the sensor till it reaches the enddevices(microcontroller).

3.     CONTROLLING UNITThe entire controlling process isdone by the microcontroller PIC16f877a. It is the heart of the concept, becauseit integrates with all the components and handles those working system. Thismakes the bidirectional motor to open and close automatically.   4.

     ACTIVATION OF MOBILE PLATFORM:Themobile platform is activated by microcontroller; this process is done by thebidirectional motor. The motor gear connects the motor and the teeth part willhelp the motor or mobile platform to start bridging the two platforms and againdisconnects the platform whenever it gets the message from the previous systemand microcontroller. The gear is motor works based on the principle ofconversation of angular momentum.

5.     DISPLAYING MESSAGE TOPEDESTRIANS:In this module the intimationwill be displayed to the pedestrians through the LED/LCD displays and the audioindicator. When the train arrives the signal in the station will turn into redcolor and when train passes the light will be turned to green color in LEDdisplay. The uneducated passengers can also understand by announcing the statuswhether the passengers can use the mobile platform or not in recorded voicethrough the audio indicator. CONCLUSION:The whole work tookplace in this paper heading towards trying to avoid accidents and reduce thenumber of fatalities in the field of railway transportation system. Replacingmanned type by adopting unmanned type i.

e. fully automatic microcontrollerbased system, this helps in preventing the death caused near level crossing,also decline the time for which the people wait near the level crossing andcompletely prevent error that has done by semi manual system.To help people thosewho are physically ill and aged because they are not having enough stamina toclimb and Cross the track with the aid of flyover, to keep in mind that use ofautomated plat form bridge is predominant and did the same in this work.

Thisis the step towards help them and also effective method for those who don’t useflyover and cross the track along track itself.In future, the system can be mademore compact such that both transmitter and receiver parts mounted on theplatform.  

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