Data acquisition system & logging system

PROJECT TYPE

Microcontroller(AT89c51) hardware design with software development (Device Driver). PIC micro controller (AT89c51) based.

 PROJECT DESCRIPTION

8 temperature sensors are connected (4 shown in diagram for simplicity).values of all the sensors are sent serially by uc to pc.

Software DAQ System takes these values and shows them on its front panel, and also log them to the data base daq.mdb. we can set some parameters like

Set point

Low limit

High limit

 when temperature of some sensor increases beyond set point ....the heater connected to controller(specific for data sensor) will be turned off / and on in opposite case. And high limit and low limits are for alarm. when temperature goes above high limit or below low limit the alarm will be turned on.

 PROJECT OUTLINE

Ø  A brief introduction to internal architecture of microcontroller.

Ø  An over view of programming of microcontroller.

Ø  An overview on C language.

Ø  An overview on mechanical arrangement.

Ø  Temperature sensor interfacing with microcontroller.

 INTERFACES USED

Ø  Serial communication used for downloading the hex code.

Ø  Sensor circuit interface.

Ø  ADC0808  interfacing

Ø  Relay interfacing.

Ø  MAX232 interfacing

Ø  ULN2803 interfacing 

 SOFTWARES USED

Ø  A Cross compiler for compiling and linking the code written for AT89c51.

Ø  Serial communication software for downloading code to AT89c51.

Ø  Operating system: Windows XP.