Presentation Of Mini Project.pptx

8/14/2019 Presentation Of Mini Project.pptx

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Presentation Of Mini Project

on

Digital Thermometer

Buddha Institute of Technology, GIDA, Gorakhpur

(Department of Electronics & Communication Engineering)

Project Guide:

1)Mr. Vivek Singh2)Ms. Neha Jaiswal

Coordinator:

1) Mr. Sushant Pandey

2) Ms. Shrishti Tripathi

Group Member:1)Mubashshirul Islam

2)Gaurav

3)Jitendra Kumar Pandey

4)Adeep Kumar Yadav

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Table of Contents:

Introduction

Component

Circuit Diagram

Working

Application

Conclusion

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Introduction:-

This project works as a digital thermometer

Thermometer displays the ambient temperature through a

LCD display.

It consists of two sections. One is that which senses the

temperature. This is a temperature sensor LM 35. The other

section converts the temperature value into a suitablenumber in Celsius scale which is done by the ADC0804.

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The LM 35 IC generates a 10mV variation to its output voltage

for every degree Celsius change in temperature.

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Components:

Temperature sensor LM 35

ADC 0804

Microcontroller 8051 (AT89C51)

LCD

Resistor(10K-4)

Capacitor(150pF-1,10F)

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LM 35:

LM35is a temperature sensor with its output proportional to

the temperature (in oC).

The operating temperature range is from -55C to 150C.

The output voltage varies by 10mV in response to every oC

rise/fall in ambient temperature.

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ADC 0804:

8-bit analog to digital

convertor

The digital outputs vary

from 0 to a maximum of

255.

The time taken to convert

the analog value to digital

value is dependent on thisclock source.

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MC AT89C51:

AT89C51 is an 8-bit

microcontroller and belongs

to Atmel's 8051 family.

has 4KB of Flashprogrammable and erasable

read only memory and 128

bytes of RAM.

there are four portsdesignated as P1, P2, P3and

P0.

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LCD:A 16x2 LCDmeans it can display 16 characters per line and there

are 2 such lines.

This LCD has two registers, namely, Command and Data.

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Circuit Diagram:

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Working:

the temperature sensor LM 35 sense temperature and produce

the output like as 20,30,40C. For each C it produce 10 mV

output .

The output of LM 35 goes to the ADC 0804 and this

converted voltage output into 8 bit data inside the chip.

Inside the MC 89C51 the hole process is going on with the

help of program.

The data pin of LCD is connected to the MC 89C51

&according to MC the measured temperature is display on

LCD .

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Application:

Digital thermometer are often used in clinic setting on

patients

Thermometer are used to give air , atmosphere and water

temperature readings.

laboratory use includes monitoring experiments and chemical

reactions as well as maintaining an optimal laboratory

environment.

Thermometers used for health care ,cooking and monitoring

temperature on home appliances such as the refrigerator or

swimming pool.

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Conclusion:

Hereby we come to an end of our project Digital

thermometer.

This project gives an idea about working of a sensor LM 35,

ADC0804 and MC 89C51.

This project can be used anywhere either at home or industries.

This is also cost efficient.

Measurement accuracy is better.

It is easy to use.

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THANK YOU

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Documents

Presentation Of Mini Project.pptx