12-10-2010, 11:18 AM
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temperature monitoring system
INTRODUCTION
This project explains about a simple low cost circuit which can be mainly used in large scale industries to detect the high temperature and take immediate measures. This circuit is used to sense the temperature at a place. It indicates the temperature on the LCD with the help of microcontroller. This circuit makes use of LM35 which is a 3 pin centigrade temperature sensor IC. It directly senses the temperature and sends the data to the controller. The block diagram of temperature monitoring system consists of temperature sensor, ADC, microcontroller and LCD. LM35 is used as temperature sensor it senses the temperature. The output of Temperature sensor is in the form of analog signal. ADC0804 is used to convert this analog signal to digital. The output of ADC is given to the Microcontroller. The output of controller will be displayed on the LCD The complete project is built around the 8051 micro controller. PCB Wizard Schematic generation software is employed to prepare the schematic for development of project. Hardware is built according to schematic prepared by soldering each component on the general purpose PCB. Source code is developed using Keil micro vision software. μVision is an IDE (Integrated Development Environment) that helps you write, compile, and debug embedded programs. The written source code is dumped into the microcontroller IC using a Programmer. To dump the code into microcontroller micro C Flash software is used
