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BY
SWAPNIL G. JALLAPELLI ABDEALI JANODWALA
KESHAV CHAVAN
PROJECT GUIDE:
Prof. SAJID NAEEM(HEAD, DEPT. OF ELECTRONIC SCIENCE),
AKI’S POONA COLLEGE OF ARTS, SCIENCE AND COMMERCE, CAMP, PUNE-411001.
WIRELESS SENSOR NETWORK
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A PROJECT ON
WIRELESS SENSOR NETWORK
OUTLINE
AIM OBJECTIVES NEED OF THE SYSTEM TEMPERATURE NODE PRESSURE NODE I-BUTTON NODE APPLICATION FUTURE SCOPE ADVANTAGES DIFFICULTIES COME ACROSS THE PROJECT CONCLUSION REFERANCES ACKNOWLEDGEMENT
WIRELESS SENSOR NETWORK
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AIM
To design, build and test the circuit for
wireless sensors network.
WIRELESS SENSOR NETWORK
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OBJECTIVES
To study the Wireless Sensor Network(WSN).
To design AVR based circuit for WSN.
To program and study the working of AVR
microcontroller (ATmega8).
To network different sensors such as
Temperature, Pressure, I-button.
WIRELESS SENSOR NETWORK
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NEED OF THE SYSTEM
Portable, economical and user friendly device for
security and effective communication.
Easy to design.
To use in day to day life for home and small scale
industries.
Less power consumption than other surveillance
devices.
Less maintenance.
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TEMPERATURE NODE
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BLOCK DIAGRAM Sensor Node 1:
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IC LM35
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CIRCUIT DIAGRAM OF TEMPERATURE NODE
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WORKING:-WIRELESS SENSOR NETWORK
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NETWORKING DIFFERENT SENSORS (TEPERATURE, PRESSURE
&
I-BUTTON) USING MESH TOPOLOGY.
CIRCUITRY CONSISTS OF DIFFERENT NODES WITH ALMOST
SAME
TYPE OF COMPONENTS.
TEMPERATURE SONSOR:
IC LM35.
INBUILT ADC.
MICROCONTROLLER ATMEGA8.
LCD.
RF TRANSCEIVER.
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LM-35
Features Calibrated directly in ˚ Celsius (Centigrade). Linear + 10.0 mV/˚C scale factor. 0.5˚C accuracy guaranteeable (at +25˚C). Rated for full −55˚ to +150˚C range. Suitable for remote applications. Low cost due to wafer-level trimming. Operates from 4 to 30 volts. Less than 60 µA current drain. Low self-heating, 0.08˚C in still air. Low impedance output, 0.1 Ω for 1 mA
load.
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ADC:-
10-bit Resolution. 13µs - 260µs Conversion Time. 6 Multiplexed Single Ended Input Channels. 2 Additional Multiplexed Single Ended Input
Channels (TQFP and QFN). Optional Left Adjustment for ADC Result
Readout. 0 - VCC ADC Input Voltage Range. Selectable 2.56V ADC Reference Voltage. Free Running or Single Conversion Mode. Interrupt on ADC Conversion Complete. Sleep Mode Noise Canceler.
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RF MODULE
The CC2500 is a low-cost 2.4 GHz transceiver designed for very low-power wireless applications.
The circuit is intended for the 2400-2483.5 MHz ISM (Industrial, Scientific and Medical) and SRD (Short Range Device)frequency band.
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It gives 30 meters range with onboard antenna.
In a typical system, this trans-receiver will be used together with a microcontroller.
Low power consumption. High sensitivity. Operation voltage: 1.8~3.6 Volts.
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MICROCONTROLLER ATMEGA8.
High-performance and Low-power consumption.
Advanced RISC Architecture. High Endurance Non-volatile Memory
segments Peripheral Features. Special Microcontroller Features. I/O and Packages. Operating Voltages. Operating frequency.
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PRESSURE NODE
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Sensor Node 2:
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CIRCUIT DIAGRAM OF PRESSURE NODE
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WORKING OF PRESSURE NODE
PERSSURE SENSOR: IC SPD015A. INBUILT ADC. MICROCONTROLLER ATMEGA8. LCD. RF TRANSCEIVER.
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SDP015A
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SPD015A:-
SPD015A is a silicon based pressure sensor of absolute type.
It consist of four strain gauges in bridge circuit.
The bridge is etched on an elastic membrane which encloses small volume low reference pressure.
The membrane is deformed due to change of outside pressure and this result in change in resistance.
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I-BUTTON NODE
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I-BUTTON (DS1990A)
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Sensor Node 3:
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CIRCUIT DIAGRAM
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WORKING OF I BUTTON
I-BUTTON NODE: I-button (DS1990A) MICROCONTROLLER ATMEGA8. LCD. RF TRANSCEIVER.
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DS1990A I-BUTTON Number iButtons to reside on a common bus Unique 48–bit serial number Low-cost electronic key for access control Can be read in less than 5 ms Operating temperature range of -40°C to
+85°C Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures
absolute traceability because no two parts are alike.
Digital identification by momentary contact Chip-based data carrier compactly stores
information.
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Data can be accessed while affixed to an object
Standard 16 mm diameter and 1-WireTM protocol ensure compatibility with iButton family
Button shape is self-aligning with cup shaped probes
Durable stainless steel case engraved with registration number withstands harsh environments
Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim.
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MASTER NODE
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Sensor Node 4: (Master Node)
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WORKING OF MASTER NODE
MASTER NODE: PC. RS 232. MICROCONTROLLER ATMEGA8. LCD. RF TRANCEIVER.
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WIRELESS SENSOR NETWORK
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APPLICATIONS
The digital data output can be used as record in a
subsequent data storage system.
It can be used as a modular device.
It can be used for security purposes in small scale industries
and house hold domain.
It can be used for temperature, pressure , etc sensing,
recordkeeping and maintaining.
The use of microcontroller in this device makes it more self
reliant and easily readable in user friendly language.
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FUTURE SCOPE
It can be used publically on a large scale with
necessary modifications.
It can be used as a substitute to the heavy and
large surveillance systems as a better and more
faster means of maintenance and recordkeeping
device.
As it is user friendly, portable and affordable it can
be a better option for mass usage.
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The presence of microcontroller makes it
more efficient and with add on facilities the
record tracking of regular activities is also
easily possible.
It can serve as an ideal and multipurpose
device by making necessary enhancements.
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ADVANTAGES
The device is economical, portable and user
friendly as compared to any other security
systems.
It requires less maintenance than other
conventional system.
Such a device is easy to design, build and
test than any other complicated system.
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DIFFICULTIES COME ACROSS THE PROJECT
The programming of the microcontroller was
very lengthy and difficult.
The code overflow was a major concern as the
microcontroller was 8-bit.
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CONCULSION
Designed, built and tested the
“WIRELESS SENSOR NETWORK” for
multipurpose industrial and house hold
applications.
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REFERENCES
William Stallings, Wireless Communication and Networking, Prenctice Hall 2002
Maxim-Ic, http://www.maxim-ic.com Atmel Corporation, http://www.atmel.com Figure 8 Wireless,
http://www.gure8wireless.com AVR Freaks, http://www.avrfreaks.com Texas Instruments, http://www.ti.com Efymag.com, September 2009 volume.
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THANK YOU!
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