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Midterm Presentation Speed Detection System Using Underground Smart Sensors

Midterm Presentation Speed Detection System Using Underground Smart Sensors. Students: Yossi Hod & David Uzan Supervisor: Idan Shmuel Id: 1433 Semester: spring, 2013. The Wisdom Stone. Small sensors, with very low power consumption Planted under roads Monitoring road status.

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Midterm Presentation Speed Detection System Using Underground Smart Sensors

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  1. Midterm Presentation Speed Detection System Using Underground Smart Sensors Students: Yossi Hod & David Uzan Supervisor: IdanShmuelId: 1433 Semester: spring, 2013

  2. The Wisdom Stone Small sensors, with very low power consumption Planted under roads Monitoring road status

  3. Wisdom stone prototype

  4. Block Diagram

  5. Project goals Calculating vehicle speed Identifying the vehicle Mining traffic data

  6. Advantages Cheaper Works in all conditions Underground Independent Supplying traffic data

  7. Challenges • Power supply • Solar Panel: SW • Synchronization • RFID: SW & HW

  8. Master SW Routine • Idle • Waking the slave for synchronization • Synchronization → Idle • Sensing that vehicle is approaching • Waking the slave for sampling • Sampling • Sending the samples to the slave → Idle

  9. Slave SW Routine • Sleep • Wake • Synchronization → Sleep • Sampling • Storing • Getting the master’s samples • Calculating the vehicle speed→ Sleep

  10. 3 m Solution for speed detection V a

  11. Challenges following the calculation Non-identical samplers. Different frequencies.

  12. Identifying the vehicle TI 13.56 MHz RFID

  13. Challenges following TI RFID Choosing the suitable component. Matching the component to Michrochip technology. Identifying the vehicle within mili-seconds.

  14. Power supply Existing power sources: • Rechargeable battery – 3.7 Volt • Non-rechargeable battery – 3.6 Volt • USB cable – 5 Volt Solar panel – need to be added as part of the project.

  15. Synchronization Master Slave Two stones – one is master and the other is slave. Using the RTC, we can manage the synchronization.

  16. Challenges following synchronization • RTC resolution is only 1 second. • Choosing the period of time to synchronize. • Setting the synchronization interrupt as top priority. • Protocols – two options: • Sending the time. • Setting up the two RTCs simultaneously.

  17. Estimated Schedule

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