Ethernet Based Data Acquisition System Abstract

The main aim of ETHERNET BASED DATA ACQUISITION SYSTEM project is to implement the compact Ethernet based data logger system. This high performance unit is possible by interfacing an Ethernet controller to the high speed AVR controller. In order to implement this we have to select one Ethernet controller which is SPI (Serial Peripheral Interface) based and is easy to interface with micro controller.    

Using this Ethernet remote device provides option for a new application development environment. It’s small, it’s easy to build and there are endless possibilities to use it.  The communication is fast! There is no delay between the sending of the command and the answer. That is very different from RS232 at standard 9600 baud rate (number of bits transfer per second) as used for most micro controller communication.    

The Ethernet Controller IC ENC28J60 can support either full duplex mode or half duplex mode. It will take transmitting/receiving 8Kbytes. ENC28J60 has internal DMA for fast access data.

In this project we are collecting the data from sensors like temperature, smoke etc. and that data is added as Ethernet packet frame by using microcontroller. By giving the destination IP address as one of desired web IP Address, sending this Ethernet Packet through Ethernet Controller in network is done. Before sending the packet to the other end we confirm the destination IP Address with data base IP Address in controller.

            This is the very simple and convenient method to send the data on Internet with low cost. By using this equipment we can send the attendance log through Internet to any where in the world from any place.

HARDWARE:

1. AVR CONTROLLER
2. LCD DISPLAY
3. POWER SUPPLY
4. ENC28J60
5. ADC
6. LM35
7. ETHERNET CONTROLLER

SOFTWARE:

1. CVAVR IDE TOOL
2. EMBEDDED C PROGRAMMING
3. STK 200/300 PROGRAMMER.