Wisenet - Complete ppt about the topic wisenet

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WISENETWire less Senso r Ne twork

Aboo Thahir

5th Sem BCA

Overview• Introduction

• Design Goals

• System Description

• Software Components

• Hardware Design

• Power consumption

• Applications

• Future Scope

• Conclusion

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Introduction

•What is Wisenet? Wisenet is a wireless network that monitors

the environment conditions such as light, temperature and humidity.

• What is “Motes”?This network is comprised of nodes called

“motes” that form an ad-hoc network to transmit this data to a computer that function as a server.

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Introduction

How does Wisenet work?

• The server stores the data in a database where it can later be retrieved and analysed via a web based interface.

• The network works successfully with an implementation of sensor mote.

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Introduction

How does Wisenet Construct?

• This involves selecting the hardware, designing the motes, and porting TinyOS.

• Once the platform is completed and TinyOS was ported to it, the next stage is to use this platform to create a small-scale system of wireless network sensor.

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IntroductionWhy we need Wisenet ?

• Smart environment represent the next evolutionary development step in building, utilities, industrial, home, shipboard, and transportation systems automation.• The importance of sensor networks is highlighted

by the number program, military program, and NSF program Announcements. • They may work in interior of a large machinery, at

the bottom of an ocean, inside a twister, in a battlefield, in a home, in large building, or be attached to animals

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Design Goals1

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3• 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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System Description

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23There are two subsystems

1. Primary subsystems1. Data Analysis

2. Data Acquisition

2. System Components1. Client

2. Server

3. Sensor Mote Network

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System Description

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23• Primary subsystems

1. Data Analysis

• This subsystem is Software-only

• Relied on exist internet & Web infrastructure to provide communication between Client & Server components.

• Selectively present collected environment data to End-user in a graphical manner

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System Description

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23• Primary subsystems

2. Data Acquisition

• Collect & store environmental data for later processing by the Data analysis subsystem.

• This is a Mix of both PC & embedded system software, as well as embedded system hardware.

• It is composed of both server & Mote Network Components.

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System Description

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23• System Components

1. Client

• Standard Web browser via Internet

Any computer with a web browser and internet access could be a client. It served only as a user interface to the Data Analysis subsystem.

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System Description

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23• System Components

2. Server

Critical component that link between the data Acquisition and Data Analysis subsystems. On the Data Analysis side is an HTTP server hosting a web application. When a page request comes in, the HTTP server calls the web application, which retrieves data from the SQL database, processes it, and returns a web-page which the HTTP server serves to the Client.

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System Description

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• System Components

2. Server

Web Program Flow

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System Description

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• System Components

3. Sensor Motes

It is the component responsible for collecting raw environmental data and transmitting that data to the Server.

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System Description

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• System Block diagram W

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Software Components1

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3WISENET is also composed of three custom software components

1. Web program

2. WiseDB

3. TinyOS

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Software Components1

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31. 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

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• Data Retrieval FormW

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Web Program

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• Generated GraphsW

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Software Components1

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32. 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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Software Components1

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33. 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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Hardware Design

• Optimized 8051-core

• Active (14.8 mA), Idle (29 _A) and sleep (0.2 _A) power modes

• 32 kB flash memory

• 2 kB +128 bytes SRAM

• 5. Three channel 10-bit ADC

• Four timers / Two PWM's

• Hardware DES encryption/decryption

• Hardware random bit-generator

• Fully integrated UHF RF transceiver (433 MHz / 868 MHz nominal)

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Applications

• Lab / Office Monitoring

•Habitat Monitoring

•Security Applications

•Extreme Weather Surveillance

•Potential Biomedical Applications

•Military Reconnaissance

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Future Work

• Expand network to develop & test multi-hop routing

• Develop a single-board mote• Create a expandable, plug-in sensor interface

• Research alternative energy sources• solar cell, rechargeable batteries

• Continue development of TinyOs• Improve tools

•Optimize performance/reduce power usage

• Improve web interface•Data analysis

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Power consumption

• Sensor node lifetime shows a strong dependence on battery lifetime

• Power consumption can be divided into:

–Sensing

–Communication

–Processing

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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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Picture Mote1

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THANKS

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