Abstract :
Global Positioning System (GPS) satellites broadcast signals from space that GPS receivers, use to provide three-dimensional location (latitude, longitude, and altitude) plus precise time. GPS receivers provides reliable positioning, navigation, and timing services to worldwide users on a continuous basis in all weather, day and night, anywhere on or near the Earth. This ultra-sensitive GPS receiver can acquire GPS signals from 65 channels of satellites and output position data with high accuracy in extremely challenging environments and under poor signal conditions due to its active antenna and high sensitivity. The GPS receiver’s -160dBm tracking sensitivity allows continuous position coverage in nearly all application environments. The output is serial data of 9600 baud rate which is standard NMEA 0183 v3.0 protocol offering industry standard data messages and a command set for easy interface to mapping software and embedded devices.
This project consists of microcontroller, GPS modem and 16X2 LCD display. Fix this project inside the bus or train. Before start the project first take the coordinate values of particular stations. These coordinates represents the bus or train stops. Microcontroller has these coordinates and compare with latest coordinates coming from GPS modem. If fixed coordinates (Bus/Train stops coordinates) are equals to latest coordinates it shows stop name on 16X2 LCD display. This is very helpful for people who are new to the cities. It provides more comfort to the journey people. In this project 7805 is a regulator and it avoids noise spikes in power supply. GPS modem is connected microcontroller through serial port. These GPS modem works under 9600 or 4800 baud rates. 16X2 LCD is connected to microcontroller through digital I/O ports.
TECHNICAL SPECIFICATIONS:
HARDWARE:
Micro controller : AT89S52
Crystal : 11.0592 MHz
LCD : HD44780
LED : 5mm Red LED
Serial Driver : Max 232
GPS modem
Power supply
Transformer : 12V step down
Filter : 1000uf/25V
Voltage Regulator : 7805
SOFTWARE:
Keil micro vision
Proteus
UC flash
C# .net Application
APPLICATIONS:
- Transport companies
- Public trains
- Private travels
- Government travels