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Low-cost Capacitive Personnel Detector

Low-cost Capacitive Personnel Detector. R.N. Aguilar, , M. Roelofsz, H. Kerkvliet, R. van de Ven , G.C.M. Meijer Electrical Instrumentation Laboratory, Microelectronic Department, Delft University of Technology, The Netherlands. Contents. Introduction: Tracking s ystems.

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Low-cost Capacitive Personnel Detector

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  1. Low-cost Capacitive Personnel Detector R.N. Aguilar, , M. Roelofsz, H. Kerkvliet, R. van de Ven, G.C.M. Meijer Electrical Instrumentation Laboratory, Microelectronic Department,Delft University of Technology, The Netherlands

  2. Contents • Introduction: Tracking systems • Capacitive sensing • Electrode overview • Two-port technique • Three-signal technique • Implementation • Conclusion

  3. Sensing technique ? Tracking

  4. Sensing technique

  5. H D Capacitive sensing high dielectric constant !

  6. Electrode overview

  7. Two-port technique

  8. Two-port technique …

  9. Three-Signal Technique

  10. Three-Signal Technique …

  11. Signal-Processing Circuit Universal Transducer Interface (UTI) Micro- controller Switches and Buffers Electrodes Display Control Lines Control Lines Implementation

  12. Implementation … STD=0.001pF Res=10bit

  13. Thank You

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