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Wireless Sensor Network

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  1. Eastern Mediterranean University Mechanical Engineering Department Master Thesis Presentation Wireless Sensor Network Presented by: Poorya Ghafoorpoor Yazdi 2012_2013 Eastern Mediterranean University, Famagusta T.R. North Cyprus via Mersin 10, Turkey Tel: +90 392 6301089 Email: poorya.ghafoorpoor@cc.emu.edu.tr

  2. Definition of Wired sensor & Wireless Sensors(Wired Sensors vs. Wireless Sensors)

  3. Wireless Sensor Networks • Overview • A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, flow, level, motion or pollutants, at different locations. • Wireless sensor networks are now used in many industrial and civilian application areas, including industrial process monitoring and control, machine health monitoring, environment and habitat monitoring, healthcare applications, home automation, and traffic control

  4. Wireless Sensor Networks • Sensor nodes • Nodes can be imagined as small computers, extremely basic in terms of their interfaces and their components. They usually consist of a processing unitwith limited computational power and limited memory, sensors (including specific conditioning circuitry), a communication device(usually radio transceivers or alternatively optical), and a power source usually in the form of a battery.

  5. Wireless sensor Node limitations 1Kbps - 1Mbps, 3-100 Meters, Lossy Transmissions 128KB-1MB Limited Storage Transceiver 8-bit, 10 MHz Slow Computations Memory Embedded Processor Sensors Battery 66% of Total Cost Requires Supervision Limited Lifetime Energy Harvesting System

  6. Wireless Sensor Networks • Base Station • The base stations are one or more distinguished components of the WSN with much more computational, energy and communication resources. They act as a gateway between sensor nodes and the end user.

  7. Wireless Sensor Networks • Unique characteristics of a WSN include: • Limited power they can harvest or store • Ability to withstand harsh environmental conditions • Ability to cope with node failures • Mobility of nodes • Dynamic network topology • Communication failures • Large scale of deployment

  8. General applications of WSNs Military applications • Battle-damage assessment • Battlefield surveillance • Communications • Monitoring Environmental applications • Monitoring the behavior of organisms • Forest fire detection • Flood detection • Mapping of the environment • Precision Agriculture Health Care applications • Hospital staff and patients tracking and monitoring • Drug administration in hospitals Other applications • Smart Buildings

  9. Military Applications • Battle-damage assessment • Battlefield surveillance • Communications • Monitoring

  10. Environment applications • Monitoring the behavior of organisms • Forest fire detection • Flood detection • Mapping of the environment • Precision Agriculture

  11. Health applications • Hospital staff and patients tracking and monitoring • Drug administration in hospitals

  12. Other Applications Smart Buildings: • Heating, ventilation, and air conditioning systems • Lightning  • Air quality and window control • Systems switching off devices  • Security and safety

  13. Manufacturing application of WSNs • Industrial robots • Real-time inventory management • Process and equipment monitoring • Environment monitoring

  14. Manufacturing application of WSN for Industrial robots • 1:Two power supplies • 2: four primary loops • 3:Wireless senor nodes • 4:Robot • 5:Convayer • 6:Antenna • 7:input module General Motors Engine assembly line

  15. Manufacturing application of WSN for Real-time inventory management • The old fashioned manual inventory management system problems: 1: out-of-stocks 2: expedited shipments 3: production slowdowns 4: excess buffer inventory Inventory management for packaged gases with WSN

  16. Manufacturing application of WSN for Real-time inventory management • General Motors utilized the monitoring system which is integrated by wireless sensor network technology to monitor the manufacturing equipments vibration and temperature: 1: forecasting the machine’s failure 2: pre-emptive maintenance 3: faster repair of equipment

  17. Manufacturing application of WSN for Environment monitoring • Wireless sensor network can be useful to: Detecting leakage Detecting radiation Detecting intrusion “Nose-on-a-chip” is a gas detector senor and it can detect more than 400 kinds of gases and send signal to a basic station

  18. Wireless Sensor Networks • Wireless Sensor Network Advantages • Wireless systems allow for energy saving • enabling preventative maintenance for reduced unplanned downtimes • increasing productivity • saving on wiring costs

  19. Wireless Sensor NetworksProgramming • TinyOS is a free and open source component-based operating system and platform targeting wireless sensor networks (WSNs). • TinyOSis an embedded operating system written in the nesC programming language as a set of cooperating tasks and processes. • TinyOS started as a collaboration between the University of California, Berkeley in co-operation with Intel Research and Crossbow Technology, and has since grown to be an international consortium, the TinyOS Alliance.