Home Security With AD HOC Networks
The Home Security Problem
rmote2500
Block Diagram Microcontroller Sensor Radio Central Node
Sensor Types Ultra-sonic Magnetic Vibration Infrared Optic Low maintenance Easy installation Accurate detection of intruders Low false alarm rate Doesn’t get in the way Hard to detect Difficult to bypass Cost Sum/Rank Weight Ultra-SonicMagnetic Vibration InfraredOptic
Example Sensor Network
MicroMag 3-Axis Magnetometer Features: 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