1 / 23

Projektarbeit: Touch Sensing with Time Domain Reflectometry

Projektarbeit: Touch Sensing with Time Domain Reflectometry. Markus Zimmermann Betreuer: Raphael Wimmer. Outline. Introduction Hardware Signal Analysis Applications Demonstration Discussion. Introduction : Time Domain Reflectometry. Reflections. Termination

prentice
Télécharger la présentation

Projektarbeit: Touch Sensing with Time Domain Reflectometry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Projektarbeit: Touch SensingwithTime Domain Reflectometry Markus Zimmermann Betreuer: Raphael Wimmer

  2. Outline • Introduction • Hardware • Signal Analysis • Applications • Demonstration • Discussion

  3. Introduction: Time Domain Reflectometry

  4. Reflections • Termination • Capacitive / Resistive / Inductive

  5. Presentusage • Wiringmaintainance (communication, aaviation) • Agricultural and geotechnical (humidity, ...) • Semiconductor/circuitboardanalysis • New Approach: Touch Sensing

  6. Hardware: Tektronix 1502 • Characteristics

  7. Signal Analysis • Acquisition • Filter • Motion Smoothing • Calibration • Detection • Mapping

  8. Stage 1: Acquisition • Camera • OpenCV

  9. Stage 2: Filter • Averaging in Frequency Domain

  10. Convolution / FFT • Explanation of ConvolutionFiltering

  11. Stage 3: Motion Smoothing • Stabilitydepends on Alteration, Gradient

  12. Stage 4: Calibration • Thresholds, Gradients

  13. Stage 5: Detection

  14. Stage 4: Mapping

  15. Applications

  16. „Wire“

  17. „Snake“

  18. „Fractal“

  19. Applications: Outlook • Wiring 3D Objects • ITO evaporation

  20. Demonstration • Video

  21. Discussion • PrototypingTechnique • Noisy • HF interferences • Increasing Resolution

  22. Conclusion

  23. ?

More Related