Wireless Sensor Networks and Privacy

Osman CeylanIstanbul Technical University

ITU RF Electronics Laboratory

• Istanbul Technical University• Faculty of Electrics – Electronics• Department of Electronics and

Communication• RF System and Circuit Designs

• Radars• Sensor Networks• Mini-Satellites• Ultra Wideband RF Power Amplifiers

• 2 PhD, 2 Master, 15 BsC Students

Node• Works with battery• Communicates by Wireless• Includes sensors• Cheap and flexible

Sensors on a Node• Temperature• Sound• Vibration• Acceleration• Magnetic Field• Pressure• Humidity• Light• RF Power• Ultrasonic TX/RX

Sensors Networks• Wireless communication• Small communication distance• Low power consumption

Sensor Networks for Automation• Building Automation• Building or Area Security• Border Security• Monitoring

• Machine• Health• Agriculture

Security Problems

• Communication is wireless!• Common communication protocols• Less encryption

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Building Automation with Sensor Networks• Production Automation

• Device Control• Temperature/Humidity Control• Worker and Device Tracking• Quality Control• Production Counting

• Sensors• Temperature/Humidity/Pressure• Sound• Camera• Motion

• RISKS• Taking Photos from Building (Privacy Problem)• Determine the Number of People Inside (Security Problem)

Machine Automation with Sensor Networks• Home Automation

• Light Control• Temperature Control• Security• Baby or Animal Tracking

• Sensors• Temperature• Humidity• Sound• Camera• Motion

• RISKS• Company Data can be stolen!• Photos from inside…

Security Problem• Determination is very difficult.• More encyrption is necessary

• More bandwitdh• More operating cost

What is the solution?

We need automation!We need security!We want low cost!

There is no unique solution!

COST

• Determine requirements• Sensor types• Number of nodes

• Decide security level• Choose your nodes• Find optimum

Thanks

• Questions