INTRODUCTION
Embedded System is a combination of
hardware and software used to achieve a single
task. It is a computer sys...
SYNOPSIS
The project aims at designing Anti-Collision System and
controlling unmanned Railway crossings. The anti-collisio...
MICROCONTROLLER
 The AT89C51 is a low-power, high-
performance CMOS 8-bit microcomputer
 It has 4Kbytes of Flash program...
PIN DIAGRAM
FEATURES
 • 128 x 8-bit Internal RAM
 • 32 Programmable I/O Lines
 • Two 16-bit Timer/Counters
 • Six Interrupt Source...
OBSTACLE SENSOR
Modulated IR transmitter
Ambient light protected IR receiver
3 pin easy interface connectors
Indicator...
RELAY
A relay is an electrical switch that opens and closes
By the control of another electrical circuit it works.
The ...
RELAY DIAGRAM
RF TRANSMITTER &RECEIVER
 The transmitter/receiver (Tx/Rx) pair operates at a frequency of 434
MHz
 An RF transmitter re...
PIN DIAGRAM RF & TF
RS 232
 Highly Reliable for 24x7 operation with
SMPS power supply adapter / Matched
Antenna
 Status of Modem Indicated b...
GSM MODEM
It is a specialized type of modem which accepts a SIM
card
operates over a subscription to a mobile operator
...
IR LED
An IR LED, also known as IR transmitter
It is a special purpose LED that transmits infrared
rays in the range of ...
PIN DIAGRAM OF IR LED
ENCODER
 18 PIN DIP
 Operating Voltage : 2.4V ~ 12V
 Low Power and High Noice Immunity
CMOS Technology
 Low Standby Cu...
DECODER
18 PIN DIP
8 ~ 12 Address Pins and 0 ~ 4 Data Pins
Easy Interface with an RF of IR
transmission medium
Minimal...
ANTI COLLISION DEVICE
The Anti Collision Device is a form of Automatic
train protection
ACDs have knowledge embedded int...
SEND SMS USING AT COMMANDS
Some advanced GSM modems like WaveCom and
Multitech, support the SMS text mode
This mode allo...
SENDING THE MESSAGE
To send the SMS message, type the following
command:
AT+CMGS="+31638740161" <ENTER>
SETTING UP THE MODEM
If the modem contains a SIM card with is secured with a
PIN code, we have to enter this pin code firs...
CHECK YOUR GSM MODEM SUPPORT
SMS TEXT MODE
To check if your modem supports this text mode, you
can try the following comma...
SCOPE FOR ADVANCEMENT
Train information is transmitted
to next station and road traffic
USES
Used on unmanned railway crossing.
Advanced train arrival information.
Time duration setting.
ADVANTAGES
Pre information of train arrival.
System placed within locomotive of the
train.
Accident avoidance.
Safety ...
DISADVANTAGES
Cost is high.
cannot work at power failure.
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02
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Unmannedrailwaytrackingandanti collisionsystemusinggsm-130621072905-phpapp02

  1. 1. INTRODUCTION Embedded System is a combination of hardware and software used to achieve a single task. It is a computer system that monitor respond to, or control an external environment. Environment are connected to systems through sensors, actuators and other I/O interfaces. Embedded system must meet timing and other constraints imposed on it by environment
  2. 2. SYNOPSIS The project aims at designing Anti-Collision System and controlling unmanned Railway crossings. The anti-collision system is implemented by fitting GPS receiver in each train. Each train will compare the GPS co-ordinates sent by the neighboring trains with its own GPS co-ordinate system. When the difference between the trains coming in same GPS co- ordinate reaches minimum level, then both trains will stop. When the train reaches the spot where the IR sensors are placed the close command for gate control system is activated. The received location will send form the server in the form of GSM modem and the server will response the position of the train. The information will be send from the main server with the location of the train. The control of unmanned railway crossing is implemented by placing display as well as alarm indicator in the train so that they can find the each train location in the same track about few kilometers before the crossing area.
  3. 3. MICROCONTROLLER  The AT89C51 is a low-power, high- performance CMOS 8-bit microcomputer  It has 4Kbytes of Flash programmable and erasable read only memory (PEROM).  AT89C51 is a powerful microcomputer which providesa highly-flexible and cost- effective
  4. 4. PIN DIAGRAM
  5. 5. FEATURES  • 128 x 8-bit Internal RAM  • 32 Programmable I/O Lines  • Two 16-bit Timer/Counters  • Six Interrupt Sources  • Programmable Serial Channel  • Low-power Idle and Power-down Modes  • Fully Static Operation: 0 Hz to 24 MHz
  6. 6. OBSTACLE SENSOR Modulated IR transmitter Ambient light protected IR receiver 3 pin easy interface connectors Indicator LED Up to 12 inch range for white object Can differentiate between dark and light colours
  7. 7. RELAY A relay is an electrical switch that opens and closes By the control of another electrical circuit it works. The switch is operated by an electromagnet to open or close one or many sets of contacts. It can able to control an output circuit of higher power than the input circuit.
  8. 8. RELAY DIAGRAM
  9. 9. RF TRANSMITTER &RECEIVER  The transmitter/receiver (Tx/Rx) pair operates at a frequency of 434 MHz  An RF transmitter receives serial data and transmits it wirelessly through RF through its antenna  The transmission occurs at the rate of 1Kbps - 10Kbps  The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter.
  10. 10. PIN DIAGRAM RF & TF
  11. 11. RS 232  Highly Reliable for 24x7 operation with SMPS power supply adapter / Matched Antenna  Status of Modem Indicated by LED  Simple to Use & Low Cost  Quad Band Modem supports all GSM operator SIM cards
  12. 12. GSM MODEM It is a specialized type of modem which accepts a SIM card operates over a subscription to a mobile operator It is used for sending and receiving SMS and MMS messages. From the mobile operator perspective, a GSM modem looks just like a mobile phone.
  13. 13. IR LED An IR LED, also known as IR transmitter It is a special purpose LED that transmits infrared rays in the range of 760 nm wavelength. It is made of gallium arsenide or aluminium gallium arsenide IR receivers, are commonly used as sensors
  14. 14. PIN DIAGRAM OF IR LED
  15. 15. ENCODER  18 PIN DIP  Operating Voltage : 2.4V ~ 12V  Low Power and High Noice Immunity CMOS Technology  Low Standby Current and Minimum Transmission Word  Built-in Oscillator needs only 5% Resistor  Easy Interface with and RF or an Infrared transmission medium
  16. 16. DECODER 18 PIN DIP 8 ~ 12 Address Pins and 0 ~ 4 Data Pins Easy Interface with an RF of IR transmission medium Minimal External Components Capable of Decoding 12 bits of Information
  17. 17. ANTI COLLISION DEVICE The Anti Collision Device is a form of Automatic train protection ACDs have knowledge embedded intelligence They take inputs from GPS satellite system for position updates It act as a watchdog in the dark as they constantly remain in lookout for other train bound ACDs
  18. 18. SEND SMS USING AT COMMANDS Some advanced GSM modems like WaveCom and Multitech, support the SMS text mode This mode allows you to send SMS messages using AT commands, without the need to encode the binary PDU field of the SMS first. This is done by the GSM modem
  19. 19. SENDING THE MESSAGE To send the SMS message, type the following command: AT+CMGS="+31638740161" <ENTER>
  20. 20. SETTING UP THE MODEM If the modem contains a SIM card with is secured with a PIN code, we have to enter this pin code first: AT+CPIN="0000" <ENTER>
  21. 21. CHECK YOUR GSM MODEM SUPPORT SMS TEXT MODE To check if your modem supports this text mode, you can try the following command: AT+CMGF=1 <ENTER>
  22. 22. SCOPE FOR ADVANCEMENT Train information is transmitted to next station and road traffic
  23. 23. USES Used on unmanned railway crossing. Advanced train arrival information. Time duration setting.
  24. 24. ADVANTAGES Pre information of train arrival. System placed within locomotive of the train. Accident avoidance. Safety and quality of service.
  25. 25. DISADVANTAGES Cost is high. cannot work at power failure.

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