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Electronic Blocks for Basic Sensor-Based Systems ~System Design and Problems

Electronic Blocks for Basic Sensor-Based Systems ~System Design and Problems. Overview. Material Review Design Objective System Concept Challenge and Problems Future Plan. Material Review. E-Block: To let non-technical user to setup a sensor base system. Simple system setup.

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Electronic Blocks for Basic Sensor-Based Systems ~System Design and Problems

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  1. Electronic Blocks for Basic Sensor-Based Systems~System Design and Problems

  2. Overview • Material Review • Design Objective • System Concept • Challenge and Problems • Future Plan

  3. Material Review • E-Block: • To let non-technical user to setup a sensor base system. • Simple system setup. • Suitable for simple applications. • Cost effective towards specific application • Wired or wireless sensor base system.

  4. Material Review • Wireless Sensor Network • A sensors network consist of multiple sensor node. • A wireless solution. • Implement network topology in the system. • Unattended operation. • Node capacity is scalable.

  5. Design Objective • Integrate e-blocks into a wireless sensor network. • E-block Wireless Sensor network that can setup easily by user. • Provide simple and low cost solution.

  6. System Concept • Simple e-block application: • Reference from the e-block simulator • http://www.cs.ucr.edu/~eblock/simulator/v2.4/index.html

  7. System Concept • e-block in a simple network. • Identity on each node required

  8. System Concept • Implement e-block in wireless sensor network • Example sensor network using mesh topology:

  9. System Concept • Previous e-block: • Sensor • Logic/State • Communication • Output • Current e-block in 3 main parts: • Sensors part • Node part • Output part

  10. System Concept Sensors part: • Output Data: • Binary output (ON or OFF) • Numerical output • Non-binary type sensor • Example: temperature sensor

  11. System Concept Node part: • Multiplexer • Receive multiple inputs • Data Processing Unit • Process data and data passing • Communication Unit • Wireless • Using ZigBee or similar type of communication protocol called MiWi from Microchip Technology. • The MiWi is a simple protocol specifically designed for low data rate, short distance,low-cost networks. • Fundamentally based on IEEE 802.15.4 standard.

  12. System Concept • Output part: • Binary type such as LED or Buzzer • Numerical type such as LCD • Computer

  13. System Concept • To implement e-block in wireless sensor network, communication part is the main concern.

  14. Challenge and Problems: • To achieve the objective of allow simple wireless sensor network setup. • Setup in a complex network. • Steps needed to allocate nodes identity.

  15. Challenge and Problems: • Network concern: • Type of network topology • Multi-hop routing algorithm

  16. Future Plan • Study of several protocol stack for our design. • Main focus on MiWi protocol stack • Initial stage of e-block electronics design. • Further feasibility studies of the system.

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