nasa sharp goddard institute for space studies new york, ny dynamic sensor networking using a...
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NASA SHARPGoddard Institute for Space Studies
New York, NY
Dynamic Sensor NetworkingUsing a Wireless Radio Using a Wireless Radio
Network to Improve Efficiency Network to Improve Efficiency in a Sensor Systemin a Sensor System
Dr. Siva Thangam, Mentor Dr. Kishore Pochiraju, Advisor
Manuel Garméndez,
SHARP Apprentice
Yasha Okshtein,SHARP Apprentice
NASA SHARPGoddard Institute for Space Studies New York, NY
Basic Networking
• Individual computers Individual computers are called clients.are called clients.
• Clients connect to Clients connect to links called gateways.links called gateways.
• Gateways Gateways interconnect or interconnect or connect to the connect to the Internet or a central Internet or a central computer.computer.
Internet or Central Computer
Gateway GatewayC
ompute
r
Com
puter
Com
puter
Com
puter
NASA SHARPGoddard Institute for Space Studies New York, NY
Dynamic Networks
• Dynamic networks, usually wireless, constantly Dynamic networks, usually wireless, constantly change.change.
• There are three types of dynamic networks:There are three types of dynamic networks:• Static Gateway – Mobile ClientStatic Gateway – Mobile Client
• Mobile Gateway – Static ClientMobile Gateway – Static Client
• Mobile Gateway – Mobile ClientMobile Gateway – Mobile Client
• Dynamic networks increase efficiency, requiring Dynamic networks increase efficiency, requiring less infrastructure over large areas.less infrastructure over large areas.
NASA SHARPGoddard Institute for Space Studies New York, NY
Sensors and Clients
• Sensors on clients Sensors on clients are scattered.are scattered.
• Sensors collect Sensors collect data.data.
• Data is then sent, Data is then sent, or routed, to a or routed, to a location.location.
Client
Radio
Sensor
Client
Radio
Sensor
Client
Radio
Sensor
Client
Radio
Sensor
Central Computer
Radio
Data
DataData
Data
NASA SHARPGoddard Institute for Space Studies New York, NY
Investigation
• Mission: to use a dynamic sensor network to Mission: to use a dynamic sensor network to route information from scattered sensors to a route information from scattered sensors to a central computer.central computer.
• Static sensors and dynamic gateways chosen for Static sensors and dynamic gateways chosen for the network type.the network type.
• Microcomputers chosen to be static clients.Microcomputers chosen to be static clients.
• Remote Control (R.C.) car will serve as mobile Remote Control (R.C.) car will serve as mobile gateway.gateway.
NASA SHARPGoddard Institute for Space Studies New York, NY
Network Components
Sensors/ClientsSensors/Clients• Microcomputers called Microcomputers called
MICA2 Motes by Crossbow.MICA2 Motes by Crossbow.
• Motes include AA power Motes include AA power supply, sensor mounts, supply, sensor mounts, and wireless and wireless communication.communication.
• Sensors to operate on low Sensors to operate on low power.power.
Mobile BridgeMobile Bridge• Dodge Viper GTSR R.C. carDodge Viper GTSR R.C. car
• Body removed to mount Body removed to mount Mote and power supply.Mote and power supply.
• Circuitry to be controlled Circuitry to be controlled by Mote operating on high by Mote operating on high power.power.
• Preprogrammed patrol Preprogrammed patrol path will make stops at path will make stops at each sensor.each sensor.
NASA SHARPGoddard Institute for Space Studies New York, NY
Mobile Bridge• Overhead view of Mobile Overhead view of Mobile
Bridge.Bridge.
• Drive system includes 2 DC Drive system includes 2 DC motors, drive circuitry, and motors, drive circuitry, and power supply (red box).power supply (red box).
• Mounting locations where Mounting locations where additional power supply additional power supply and Mote will be attached and Mote will be attached to the chassis of the car to the chassis of the car (green boxes).(green boxes).
NASA SHARPGoddard Institute for Space Studies New York, NY
Proposed Network Layout
CentralComputer
Key
Mobile Bridge
Sensor/Client
WirelessRadioRanges
BridgeZones
NASA SHARPGoddard Institute for Space Studies New York, NY
Acknowledgements• Dr. Siva Dr. Siva
Thangam, Thangam, MentorMentor
• Nimer RimawiNimer Rimawi
• National National Aeronautics Aeronautics and Space and Space Administration Administration (NASA)(NASA)
• Dr. Kishore Dr. Kishore Pochiraju, Pochiraju, AdvisorAdvisor
• Stevens Stevens Institute of Institute of TechnologyTechnology
• Modern Modern Technology Technology Systems Inc. Systems Inc. (MTSI)(MTSI)