E LECTRONIC B LOCKS FOR B ASIC S ENSOR -B ASED S YSTEMS ~S YSTEM D ESIGN AND P ROBLEMS

O VERVIEW Material Review Design Objective System Concept Challenge and Problems Future Plan

M ATERIAL R EVIEW 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.

M ATERIAL R EVIEW 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.

D ESIGN O BJECTIVE 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.

S YSTEM C ONCEPT Simple e-block application: Reference from the e-block simulator

S YSTEM C ONCEPT e-block in a simple network. Identity on each node required

S YSTEM C ONCEPT Implement e-block in wireless sensor network Example sensor network using mesh topology:

S YSTEM C ONCEPT Previous e-block: Sensor Logic/State Communication Output Current e-block in 3 main parts: Sensors part Node part Output part

S YSTEM C ONCEPT Sensors part:  Output Data: Binary output (ON or OFF) Numerical output  Non-binary type sensor  Example: temperature sensor

S YSTEM C ONCEPT Node part: a) Multiplexer Receive multiple inputs b) Data Processing Unit Process data and data passing c) 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 standard.

S YSTEM C ONCEPT Output part: Binary type such as LED or Buzzer Numerical type such as LCD Computer

S YSTEM C ONCEPT To implement e-block in wireless sensor network, communication part is the main concern.

C HALLENGE AND P ROBLEMS : To achieve the objective of allow simple wireless sensor network setup. Setup in a complex network. Steps needed to allocate nodes identity.

C HALLENGE AND P ROBLEMS : Network concern: Type of network topology Multi-hop routing algorithm

F UTURE P LAN 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.