WISENETWireless Sensor Network

SUBMITTED BY:Bhavith D

5th Sem CS 497IS08003

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Overview

• Introduction• Design Goals• Design Methodology• Primary Sub Systems• Block Diagrams• Applications• Conclusion

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Introduction

• Wireless Sensor Networks

– One of MIT's 10 emerging technologies

– Low-power systems

– New applications: sensing, controls, automation

• WISENET: Wireless Sensor Network

– Office environment monitoring• Temperature, humidity, light

– Quantitively evaluate heating & A/C systems

– Funding & support provided by Honeywell, Int'l.

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Design Goals• Use of Commercial-Off-The-Shelf (COTS)

software & standard interfaces where applicable

– Apache web-server (HTTP)

– MySQL database

– PHP web programming language

• Simple, web-based user interface

• Battery-powered, wireless sensor nodes: 'motes'

• Low-power consumption = Long battery life

• Motes create self-organizing ('ad-hoc') networks for robust communications

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Design Methodology

• Top-Down Design Process

– Define major subsystems

– Define subsystem interfaces

• Primary Subsystems:

– Client• Standard Web browser via

Internet– Server– Wireless mote network

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System Block Diagram

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Subsystem – Server

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WiseDB

• Written in C++

– Utilizes open-source APIs• Application Programming

Interfaces (API)• MySQL++ database API• Serial API

• Relays information from mote network to database

• Sends commands to mote network

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Web Program

– Written in PHP4

– Utilizes Charting Software: ChartDirector v3.0

– Generates 3 Graphs (default)

– Passes Parameters via HTTP GET

• Use bookmarks for specific queries

– Retrieves Data for Specific Mote or All Motes

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Web Program

• Data Retrieval Form:

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Web Program• Generated Graphs:

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System Block Diagram

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Block Diagram – Client

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Block Diagram – Server

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Block Diagram – Server

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Block Diagram– Sensor Network

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Block Diagram – Mote

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TinyOS

• Real-time operating system for microcontrollers

• Open-source project at UC Berkeley

• Key Features:

– Developed for sensing applications– Emphasis on low-power: Idle & sleep modes– Highly modular architecture– Efficient utilization of resources

• Currently developed for Atmega microcontrollers

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Applications– Lab / Office Monitoring

– Habitat Monitoring

– Security Applications

– Extreme Weather Surveillance

– Potential Biomedical Applications

– Military Reconnaissance

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Conclusion– WISNET is smaller and faster– Emerging technology that will

change the world– Many real-world applications– Low-power– Open-source software– Modular mote application design

(TinyOS)– Flexible server implementation– Simple user interface via the web

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Reference• www.google.com• www.wisenet.com• www.wikkipedia.com• www.pdf.com

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THANK YOU

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