ELECTRONIC BLOCKS FOR BASIC SENSORBASED SYSTEMS SYSTEM DESIGN
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. � Suitable for simple applications. � Cost effective towards specific application � Wired or wireless sensor base system.
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.
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.
SYSTEM CONCEPT Simple e-block application: � Reference from the e-block simulator http: //www. cs. ucr. edu/~eblock/simulator/v 2. 4/index. html
SYSTEM CONCEPT e-block in a simple network. � Identity on each node required
SYSTEM CONCEPT Implement e-block in wireless sensor network � Example sensor network using mesh topology:
SYSTEM CONCEPT Previous e-block: � Sensor � Logic/State � Communication � Output Current e-block in 3 main parts: � Sensors part � Node part � Output part
SYSTEM CONCEPT Sensors part: § Output Data: Binary output (ON or OFF) Numerical output Ø Non-binary type sensor Ø Example: temperature sensor
SYSTEM CONCEPT Node part: a) Multiplexer b) Data Processing Unit c) Receive multiple inputs Process data and data passing Communication Unit Wireless Using Zig. Bee or similar type of communication protocol called Mi. Wi from Microchip Technology. Ø The Mi. Wi is a simple protocol specifically designed for low data rate, short distance, low-cost networks. Ø Fundamentally based on IEEE 802. 15. 4 standard.
SYSTEM CONCEPT Output part: � Binary type such as LED or Buzzer � Numerical type such as LCD � Computer
SYSTEM CONCEPT To implement e-block in wireless sensor network, communication part is the main concern.
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.
CHALLENGE AND PROBLEMS: Network concern: � Type of network topology � Multi-hop routing algorithm
FUTURE PLAN Study of several protocol stack for our design. � Main focus on Mi. Wi protocol stack Initial stage of e-block electronics design. Further feasibility studies of the system.
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