Abstract :
Now a day’s Many real time applications connected to web(internet).This is very useful and helpful for customers to see application(requirements) from anywhere in the world. These web connected applications belong to server client model. TCP, UDP and HTTP protocols are used in this concept. Data transfer to web server is done through GPRS (General packet radio services) communication. We can transfer large amounts of data through this GPRS. Many Embedded Networking applications fall under this model only.
This project consists 16X2 LCD and 4X4 keypad. Thermal printer is also connected to microcontroller which isoptional. For issuing the ticket, conductor or driver enter details of journey like place of departure, arrival and cost on keypad. We can see the information on LCD.Microcontroller gets this information and developsa TCP stack with standardformat. If thermal printer provided then we can get a printed copy of the same on thermal paper.Also this stack data will be sent to web server. Web server consists of particular IP address and port number. Web server maintains data base of all tickets information with respective time. Ownercould see this information on web server from anywhere in the world. This system avoids from ticket manipulation from driver or conductor.
Here we use 8051 as a microcontroller with 5v DC Power supply. Serial (UART) protocol is primary concern here. The main heart of this project is GSM/GPRS modem and it work on GPRS AT commands. 16X2 LCD is connected to microcontroller through Digital I/O lines.4X4 keypad is directly connected to microcontroller. Thermal printer is also serial connectivity but it was optional.
TECHNICAL SPECIFICATIONS:
HARDWARE SPECIFICATIONS
Micro controller : AT89x series
Crystal : 11.0592 MHz
LCD : HD44780
Keypad : 4×4 matrix keypad
Printer (optional) : Thermal (Miniature)
Basic GPIOs
GSM/GPRS modem : Sim300/ Sim 900
RS232 interface : ST/MAX: 232
POWER SUPPLY
Transformer : 12V step down
Filter : 1000uf/25V
Voltage Regulator : 7805 / 7812
SOFTWARE SPECIFICATIONS
Software tools used
Keil IDE
Proteus VSM
UC flash
Web server
APPLICATIONS
- Road transport
- Corporation department
- Private travels
- Transport applications
- Parcel ticket issue
BLOCK DIAGRAM
