1. RAILWAY LEVEL CROSSING GATE OPERATION REMOTELY BY ANDROID
Under the Guidance of
Submitted by

2. ABSTRACT
The project is designed to achieve control over the railway level crossing gate through Android Application by the station master.
The proposed system rules out the need of any human involvement at the railway level crossing.
This system involves opening and closing of the level crossing gate with help of an Android Application Device.

3. ....contd
Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

4. BLOCK DIAGRAM

5. HARDWARE REQUIREMENTS
8051 series Microcontroller.
Bluetooth device.
Crystal, Resistors, Capacitors.
Diodes, Transformer, Voltage Regulator.
, LED, DC Motor.
Motor Driver IC.

6. POWER SUPPLY Bridge rectifier 5v Regulator 230 V AC 50 Hz 5V DC
Filter(470µf)
12V step down
transformer

7. It is a smaller computer Has on-chip RAM, ROM, I/O ports...
MICROCONTROLLER
It is a smaller computer
Has on-chip RAM, ROM, I/O ports...
RAM
ROM
I/O Port
Timer
Serial COM Port
Microcontroller
CPU
A single chip

8. INTERNAL STRUCTURE OF A MICRO CONTROLLER-AT89S52/51
CPU
On-chip RAM
On-chip ROM for program code
4 I/O Ports
Timer 0
Serial Port
OSC
Interrupt Control
External interrupts
Timer 1
Timer/Counter
Bus Control
TxD RxD
P0 P1 P2 P3
Address/Data
Counter Inputs

9. Features of AT89S51/52 Compatible with MCS®-51 Products
8K Bytes of In-System Programmable (ISP) Flash Memory
Endurance: 10,000 Write/Erase Cycles
4.0V to 5.5V Operating Range
Fully Static Operation: 0 Hz to 33 MHz
256 x 8-bit Internal RAM
32 Programmable I/O Lines
Three 16-bit Timer/Counters
Eight Interrupt Sources
Full Duplex UART Serial Channel
Interrupt Recovery from Power-down Mode
Watchdog Timer
Dual Data Pointer

10. Pin Description

11. What is called Android..?
Android is an open-source operating system which means that any manufacturer can use it in their phones free of charge.
It was built to be truly open. For example, an application can call upon any of the phone’s core functionality such as making calls, sending text messages, or using the camera. 

12. …….contd
Android is built on the open Linux Kernel. Furthermore, it utilizes a custom virtual machine that was designed to optimize memory and hardware resources in a mobile environment.

13. What is an android application on mobile phones?
An android app is meant for phones with an android based operating systems. They can be downloaded from the android app Market which is pre-loaded on every android phone.
Blue control APP and Bluetooth Spp APP are some examples.

14. Android-The world's most powerful mobile platform
Very customizable. Open source operating system is easily changed, hacked, manipulated, and molded to fit whatever functionality you had in mind. Found on all platforms for all prices depending on what hardware and software version you are interested in. The battery is usually replaceable.

15. COMPARISION OF ANDROID WITH OTHER OS
ANDROID OS : Android is open source software, manufacturers can modify the operating system to suit their respective needs and phones. This becomes a cheap and feasible alternative for the manufacturer, as opposed to developing an operating system in-house or hiring a software company to do it.

16. Windows Phone:
Windows Phone is a closed-sourced, which means that it is solely developed by the company and protected by copyright. The Windows Store is limited as there only a few number of apps

17. i-OS:
It's not available on all carriers but this is expanding. The battery is not replaceable which is why all the I Phone users you know have it plugged in all the time as the battery degrades.

19. ANDROID APPLICATION OPERATED BLUETOOTH
The Android platform includes support for the Bluetooth network stack, which allows a device to wirelessly exchange data with other Bluetooth devices.
The application framework provides access to the Bluetooth functionality through the Android Bluetooth APIs.

20. An example of Android App Blue-control Screen

21. FEATURES OF BLUETOOTH
Super simple and easy way to interface using Bluetooth stack.
3.3V Device with standard 5V DC Power source.
Can also support SPI Protocol, pins are made available.
Low power consumption, Low cost.
Has high-performance wireless transceiver system
Can be used to interface with PC, Mac or Android phones/tablets.

22. Generic Default Visibility at Software side:HC-06 or Linvor
Default Pairing code is not '0000' but '1234'.
Please use Baud Rate with 8-N-1 connectivity from other device.
Works with any microcontroller with Serial connectivity.

23. Working
PLEASE REFER CD

24. Soft ware Requirements
Keil an ARM Company makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments, evaluation boards, and emulators for ARM7/ARM9/Cortex-M3, XC16x/C16x/ST10, 251, and 8051 MCU families.
Compilers are programs used to convert a High Level Language to object code. Desktop compilers produce an output object code for the underlying microprocessor, but not for other microprocessors.

25. i.e the programs written in one of the HLL like ‘C’ will compile the code to run on the system for a particular processor like x86 (underlying microprocessor in the computer).
For example compilers for Dos platform is different from the Compilers for Unix platform  So if one wants to define a compiler then compiler is a program that translates source code into object code.

26. BIBILOGRAPHY
“The Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education.
ATMEL 89S52 Data Sheets.

27. THANK YOU