home security with ad hoc networks. the home security problem
TRANSCRIPT
Home Security
With AD HOC Networks
The Home Security Problem
rmote2500
Block Diagram
MicrocontrollerMicrocontrollerSensorSensorRadioRadio
CentralNode
CentralNode
Sensor Types
Ultra-sonic Magnetic Vibration Infrared Optic
Low maintenance 12 5 9 6 7 7
Easy installation 4 3 9 8 7 7
Accurate detection of intruders 20 10 4 8 9 7
Low false alarm rate 16 9 9 2 6 8
Doesn’t get in the way 8 5 10 9 7 7
Hard to detect 12 3 10 9 7 7
Difficult to bypass 16 10 6 8 8 7
Cost 12 5 8 10 7 7
Sum/Rank 100 712 760 724 740 716
Weight
Ultra-Sonic
Magnetic
Vibration
Infrared
Optic
Example Sensor Network
MicroMag 3-Axis Magnetometer
Features: 500uA @ 3.3V DC Field measurement range +/-
1100uT Resolution as low as 0.015uT SPI interface - no additional
circuitry needed
Accelerometer – ADXL202JE +/-2g
PIR Motion Sensor Module