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Wireless Sensor Networks for Habitat Wireless Sensor Networks for Habitat MonitoringMonitoring

CS843

Gangalam Vinaya Bhaskar Rao

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TopicsTopics

1. Introduction

2. Need for Habitat Monitoring

3. System Architecture for Habitat Monitoring

4. Implementation Strategies

5. Current Result

6. Conclusion

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Introduction Introduction

Habitat monitoring represent a class of sensor network applications with enormous potentials benefits for scientific communication and society

The sensor nodes are more efficient in providing localized measurements and detailed information of local processing and storage allows sensor nodes to perform complex filtering and triggering functions.

The ability to communicate allows to cooperate in performing more complex tasks, like statistical sampling, data aggregation, and status monitoring.

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Introduction Contd.Introduction Contd. The computing and networking capabilities allow sensor networks to

be reprogrammed or retasked after the deployment.

The impact of sensor networks for habitat and environmental monitoring will be measured by their ability to enable new applications and produce new results other wise too difficult to realize

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Need for Habitat MonitoringNeed for Habitat Monitoring Researchers in the life sciences are becoming increasingly concerned

about the potentials impacts of human presence in monitoring plants and animals in field conditions.

A disturbance can seriously reduce or even destroy sensitivepopulations by increasing stress, reducing breeding success, increasing predation, or causing a shift to unsuitable habitats.

Disturbance effects are of particular concern in small island situation, where it may be physically impossible for researchers to avoid

some species on an entire population.

So, sensor network deployment may represent a substantially more economical method for conducting long-term studies than

traditional personnel-rich methods

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System Architecture System Architecture

The designed architecture is a tiered architecture

The basic units in the design are :--

1. Sensor nodes

2. Sensor node gateway

3. Base Station

4. Sensor Patch

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Implementation Strategies Implementation Strategies Sensor Network Node

Sensor Board

Energy Budget

Sensor Deployment

Base Installation

Database Management System

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Sensor Network Node

In this deployment, they have used UC Berkeley motes as the sensor nodes.

The latest family of the family, called Mica[11]

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Sensor Board

To provide relevant measurements to scientists, they have designed and manufactured an

environmental monitoring sensor board

This weather board includes temperature, photo resistor , barometric pressure, humidity, and passive

infrared sensors.

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Energy Budget

Many habitat monitoring applications need to run for nine months.

Mica runs on a pair of AA batteries, with are typically 2.5 amps.

The application chooses how to allocate this energy budget between sleep modes, sensing, local

calculations and communications.

We need budget our power with respect to the energy.

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To estimate of what is possible on a Mica mote with a pair AA batteries, we tabulated the costs of various basic operations in this table.

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Sensor Deployment

The wireless sensor network was deployed on July 2002

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Base Station Installation

It provides remote access to the habitat monitoring networks, the sensor network patches is

connected to the internet through a wide area link.

It is considered as a turnkey system, since it needs to run unattended.

Database Management

The base station currently uses Postgres SQL database.

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Current Results

32 motes are deployed on Great Duck Island.

They have calculated the emotes have sufficient power to operate for the next six months, even though biologists will stop visiting the island.

The new data will provide insights into the climate activity through the fall and winter.

The performance so far is considered to be excellent.

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Conclusion

Habitat monitoring represent an important class of sensor network applications.

The system which is designed is used at the College of the Atlantic to define the core application requirements.

As end users are ultimately interested in the sensor network system must deliver the data of interest in a confidence inspiring manner.

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Questions ?Questions ?

Thank you.