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 comprises of a GSM/GPRS modem, detecting circuit for detecting AC mains power. Thiscircuitry gives a DC pulse depending on AC power. If AC power exists on the mains then it gives logic 1 otherwise logic 0, with the help of these logic levels the microcontroller stores status of the number of street lightsturned ON/OFF with respectto the street and poll number.Finally microcontroller develops a TCP/IP stack with standard data format and sends the stack data to web server using specified IP address and port number. Electricity department find out information/status of the lights with street number and poll number without going to the site. A 16X2 LCD is also connected to microcontroller todisplay the status or stack information for internal debugging purpose.
Here we use 8051 as a microcontroller with 5v DC Power supply. Its having some Basic inputs and outputs. 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.