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Ykä Marjanen

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  1. Wireless Sensor Network - course:Project to investigate requirements and applications using wireless sensor networks on a construction site Ykä Marjanen

  2. Background:Wireless Sensor Networks • Usable technology available for less than a decade • Growing number of sensors and need to gather information generate need for WSN applications • Military applications • Health monitoring • Vehicle tracking and detection • Wireless communication getting more popular • Wireless sensor network topology and protocols still under development • Needs to be simple, efficient, low-power, robust, low-cost, etc

  3. Background:Road Construction • Very complex and hectic environment • Many processes and work phases are done manually • Multiple subcontractors and machines from different manufacturers • Normally small companies • VTT Electronics has developed and tested wireless communication possibilities • Need to share information more efficiently

  4. Using WSN as Part of a Road Construction Site:Requirements • Robust and fault tolerant • Low-cost • Scalable • Universal • Easy to use; • transmission and topology invisible to user. • Low power consumption

  5. Using WSN as Part of a Road Construction Site:Possibilites • Vast international markets • Many possible applications from billing to automated machines • Large number of sensors and users • Current technology level low • Fierce competition

  6. Using WSN as Part of a Road Construction Site:Protocol Needs • Robust • Secure • Fast transmission • Good transmission range • Usage of different wireless technologies • GPRS, GSM, WIMAX, WLAN • Simple interface to hardware and application • Simple universal language

  7. Using WSN as Part of a Road Construction Site:Example Applications • Sensor and actuator collaboration between machines • Loading gravel to a truck • Grinding a road • Automation of processes • Billing using database and machine communication • Assignment of work schedules • Quality control of a road • Maintenance scheduling • Work supervising

  8. Proposed Schematics • Sink controls local nodes • Nodes have unique ID • Locally nodes can communicate without the sink • Nodes include sensors and actuators • Sinks relay the message to outside • Sink allows usage of a node from outside • Physical layer uses available wireless technologies • Data link layer and MAC includes secure and ID features • MAC releases the packet to the network layer in standard format

  9. THANK YOU