WireLess Sensor Network

Views:
 
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

PowerPoint Presentation:

Wireless Sensor Networks Submitted To Submitted By Dr. Manju korwal Chattopadhyay Sachin Wankhede 12MTSIT14

PowerPoint Presentation:

Introduction Architecture Protocols Power Management Types of Sensor’s Characteristics Application

PowerPoint Presentation:

Introduction a large number of small sensing self-powered nodes which gather information or detect events and communicate in a wireless fashion. WSN are used to collect data from the environment. They consists of large number of sensor nodes and one or more Base Stations. Each node has capability to sense data, process the data and send it to rest of the nodes or to Base Station.

PowerPoint Presentation:

Sensor node functionality Each sensor node contains a computational module (a programmable unit) which provides computation ability, storage, and bidirectional communication with other nodes in the system. Two advantages: They can be re-task in the field. Easily communicate with the rest of the network.

PowerPoint Presentation:

WSN Architecture Sensor Node Gateway Base Station

PowerPoint Presentation:

Gateway Each sensor patch contains a gateway node. Each gateway node can communicate with the sensor network and provides connectivity to the transit network.

PowerPoint Presentation:

Transit Network Can consist of a single hop link or a series of networked wireless nodes. Each transit network design has different characteristics. Robustness Bandwidth Energy efficiency Cost Manageability

PowerPoint Presentation:

Base Station Data storage for the collection of sensor patches. Base-Remote link connection to the internet.

PowerPoint Presentation:

One major challenge in a WSN is to produce low cost and tiny sensor nodes. There are an increasing number of small companies producing WSN hardware. Also inherent to sensor network adoption is the use very low power methods for data acquisition. Hardware

PowerPoint Presentation:

Energy is the scarcest resource of WSN nodes. WSNs are meant to be deployed in large numbers in various environments. Algorithms and protocols need to address the following issues: 1.Lifetime maximization. 2.Robustness and fault tolerance 3.Self-configuration. Software

PowerPoint Presentation:

WSN Protocols Wireless sensor network routing protocols can be classified into following categories. Direct communication Flat protocols ( Multihop ) Hierarchical Routing Protocols

PowerPoint Presentation:

Direct Communication Hierarchical Routing Multihop Routing Cluster Head

PowerPoint Presentation:

Communication Protocols Headers. Each message generally has a header identifying its source node, destination node, length of the data field, and other information. In encoded messages, parity bits may be included. In packet routing networks, each message is broken into packets of fixed length. The packets are transmitted separately through the network and then reassembled at the destination.

PowerPoint Presentation:

Power Management Power management is employed to increase the lifetimes of sensor nodes. Current research is in designing small MEMS ( microelectromechanical systems) RF components for transceivers, including capacitors, inductors, etc.

PowerPoint Presentation:

Types of Sensors Mechanical Sensors Include those that rely on direct physical contact. The Piezoresistive Effect The Piezoelectric Effect Capacitive Sensors Inductive sensors Optical Transducers Convert light to various quantities that can be detected . Photoelectric effect Photoconductive sensors Junction-based photosensors

PowerPoint Presentation:

Magnetic and Electromagnetic Sensors Magnetoresistive effect Magnetic Field Sensors Thermal Sensors Thermo-Mechanical Transduction Thermoresistive Effects Thermocouples

PowerPoint Presentation:

Characteristics Power consumption constrains for nodes using batteries or energy harvesting Ability to cope with node failures Mobility of nodes Heterogeneity of nodes Scalability to large scale of deployment

PowerPoint Presentation:

Applications of WSN Environmental/Habitat monitoring Acoustic detection Seismic Detection Military surveillance Inventory tracking Medical monitoring Process Monitoring

PowerPoint Presentation:

References: https://www.google.co.in/networks/WirelessSensorNetChap04.pdf https://www.en.wikipedia.org/wiki/Wireless_sensor_network https://www.ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6170477 https://www.sensor-networks.org

PowerPoint Presentation:

Thank you Q?

authorStream Live Help