SAMPATH SAI TECE 4 – 207AG1A0456

IntroductionRecent DevelopmentWINS System Architecture WINS Node ArchitectureWINS Micro sensorWINS Digital Signal ProcessingWINS characteristics & applicationDesign considerationConclusion

Wireless Integrated Network Sensors (WINS) now provide a new monitoring and control capability for monitoring the borders of the country.

Identify a stranger or some terrorists entering the border.

The border area is divided into number of nodes.

The noise produced by the foot-steps of the stranger are collected using the sensor.

WIRE LESS INTEGRATED NETWORK SENSOR(WINS)

WINS combine sensing, signal processing, decision

capability, and wireless networking capability in a compact, low power system.

WINS require a microwatt of power so it is very cheaper than other security system such as Radar.

It produce a less amount delay to detect the target.

It is reasonably faster.

WINS Initiated in 1993 under Defence advance research project agency(DARPA)in US.

LWIM (Low power wireless integrated microsensor)program began in 1995 for further development os WINS sponsored by DARPA.

In 1998, WINS NG introduced for wide varity of application.

the LWIM project multihop, self-assembled, wireless network algorithms for operating at micropower levels.

Internet

sensing

signal processing / event recognition

wireless communication

low powernetworking

event

informati

on

local area worldwide user

WINS architecture includes sensor, data converter, signal processing, and control functions.

The micro power components operate continuously for event recognition, while the network interface operates at low duty cycle.

Continuous operation low duty cycle

1998: WINS NG developed by the authors continuous sensing, signal processing for event detection, local control of actuators, event classification, communication at low power Event detection is continuous micropower levels Event detected => alert process to identify the event Further processing? Alert remote user / neighboring

node? Communication between WINS nodes

sensor

actuator inte

rfac

e

signal processing for event detection

control

Processing

event classification & identification

wireless internet interface

continuously vigilant operation low-duty cycle operation

WINS nodes are distributed at high density in an environment to be monitored.

WINS node data is transferred over the asymmetric wireless link to an end user

The detector shown is the thermal detector. It just captures the harmonic signals produced by the footsteps of the stranger entering the border.

These signals are then converted into their PSD values and are then compared with the reference values set by the user.

Thermal Infrared Detector

Remotely monitored battlefield sensor system(REMBASS)

Use now a day in unattended ground sensor(UGS)

These sensor used seismic-acoustic energy, infrared energy and magnetic field to detect enemy activity.

Fig. . Sensor hardware from left to right: (a) Mica2 network node, (b) Mica Sensor Board, (c) Mica PowerBoard, (d) TWR-ISM-002 Radar Board, and (e) All of the boards attached together.

If a stranger enters the border, his foot-steps will generate harmonic signals. It can be detected as a characteristic feature in a signal power spectrum. Thus, a spectrum analyzer must be implemented in the WINS.

The spectrum analyzer resolves the WINS input data into a low-resolution power spectrum.

WINS micropower spectrum analyzer architecture

Characteristics: Support large numbers of sensor.

Dense sensor distributions .

These sensor are also developed to support short distance RF communication

Internet access to sensors, controls and processor

On a global scale, WINS will permit monitoring of land, water, and air resources for environmental monitoring .

On a national scale, transportation systems, and borders will be monitored for efficiency, safety, and security.

On a local, enterprise scale, WINS will create a manufacturing information service for cost and quality control.

Reliability Energy :There are four way in which node

consume energy1. Sensing2. Computation3. Storing4. Communicating

Sensing: Choosing right sensor for the job can improve the system performance.

The sensor must be design to minimize the likelihood of environment effect of wind, rain,snow etc.

The enclosure is manufacture from clear acrylic material.

Enclosure

We experienced several failure as a result of undetectable, incorrectly download program and depleted energy level etc.

For example node will detect false event when sensor board is overheated.

Densely distributed sensor networks. Application specific networking architectures Development platforms are now available .

•The network is self-monitoring and secure.

•. Now it is possible to secure the border with an invisible wall of thousands or even millions of tiny interconnected sensors.