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CONTENTS

P

S

MII

1.0 INTRODUCTION1.1 BACKGROUND OF STUDY

1.2 OBJECTIVE OF STUDY

1.3 PROBLEM STATEMENT

1.4 SCOPE OF STUDY

2.0 LITERATURE REVIEW

3.0 METHODOLOGY

4.0 RESULTS

5.0

LIMITATION

6.0 CONCLUSION

7.0 REFERENCES


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1.0 INTRODUCTION

RF refers to radio frequency, the mode of communication forwireless technologies of all kinds, including cordless phones,radar, ham radio, GPS, radio and television broadcasts.

RF technology is widely used in our life without we noticed it.From baby monitors to cell phones, Bluetooth to remotecontrol toys,RF waves are all around us. RF waves areelectromagnetic waves which propagate at the speed of light, or

186,000 miles per second (300,000 km/s).

1.1 BACKGROUND OF STUDY


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RF refers to radio frequency, the mode of communication forwireless technologies of all kinds, including cordless phones,radar, ham radio, GPS, radio and television broadcasts.

RF technology is widely used in our life without we noticed it.From baby monitors to cell phones, Bluetooth to remotecontrol toys,RF waves are all around us. RF waves areelectromagnetic waves which propagate at the speed of light, or

186,000 miles per second (300,000 km/s).

1.1 C ROUND O TUD


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1.2 OBJECTIVES

To design acircuit that can

perform as asmoke alarmsystem that actwirelessly byusingmicrocontroller

To design thesmoke sensorthat can be setby threedifferentthreshold

To create a C

program tocontrol theoperation ofwireless smokedetector system


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1.3 PRO LEM T TEMENT

1

The limitation of smoke detector systemare more spacing and wire required.

2

Many building codes require that new

construction what is referred to as"interconnected smoke detector systems"in place.

3

Most of smoke detector are not locallyproduct and import from oversea

4 The price offers in the market too expensive.


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1.4 SCOPE OF PROJECT

Analysis

Do some of the analysis aboutdistance and types of smoke that canbe detected.

Hardware

Interface the devices on microcontroller

SoftwareBuild a C programming code for wireless smoke

system.


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2.0 LITER TURE REVIEWYEAR AUTHORS

May , 2010 MICROCONTROLLER BASEDREMOTECONTROLLOCATORUSING RADIOFEQUENCY SIGNALBy Suhaila Binti Mohd Najib, Universiti

Teknologi Malaysia

May, 2010 HUMIDITY ANDGAS SENSORMONITORING SYSTEM INAN IDEALENVIRONMENT

By Ezla Najwat Bt Ahyat, UniversitiTeknologi Malaysia


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3.0 METHODOLOGY : PART 1


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3.0 METHODOLOGY : PART 2


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3.1BLOKDIAGRAM


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3.3 O TW RE DEVELOPMENT

PIC KIT2

Programmer

C language (MPLABIDE ENVIRONMENT)Language


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4.0 RESULT

Type of the

material

Initial

voltage of gas

sensor

( decimal)

Final voltage

of smoke

sensor

(decimal)

Comment

Paper 0.938 1.0943 Smokedetected

Plastic 0.938 1.246 Smoke

detectedTissue 0.938 4.0203 Smoke detected

y Types of the material detected by gas sensor


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4.1 RESULT

Place Distance Comment

Open air 12cm Signal is sent

Open air withobstacle

10 cm Signal is sent

Close place 7cm Signal is sent

The capability of wireless smoke system


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4.2 RESULT

Range of rs Gas concentration

(ppm)

Comment

RS


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4.3 RESULT

Range of RS ADC value(V)

Normal condition without

threshold(rs)

4.99

RS


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5.0 LIMIT TION

Gas sensor

Sensitivity of gas sensor cannot be predictable and controlled.

Only sensitive at rs 0.6 to 0.3.

RF module

Only can send the data in short range of distance.

The signal being sent sometimes is not stable and uncontrolled.

Easily broken without knowing the right method to handle andused it


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6.0 CONCLU ION

y The objective almost complete and fulfill the desiredrequirement.

y Wireless smoke detector is an intelligent version of smokedetector can be market extensively.

y The number of accident due to leaking of contaminant gascan be reduced by giving an awareness of using wirelesssmoke detector.

y The functionality of wireless smoke device can be upgrade to

attract people attention and used this product.y The weight and functionality of wireless smoke system

should be light and user friendly.


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Websites

y http://www.totalcomputing.net/index.asp?PageAction=VIEWPROD&ProdID=3689

y http://www.acehardware.com/product/index.jsp?productId=2432729

y http://en.wikipedia.org/wiki/Smoke_detector

y http://courses.engr.illinois.edu/ece445/?f=Projects&sem=spring2007

y

http://www.wisegeek.com/what-is-rf.htm


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Q&A

THAN OU

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