1 / 11

Digital Aid in Computerized Magnetic Field Mapping

Digital Aid in Computerized Magnetic Field Mapping. Sarbajit Pal PcAPAC 2000. MFM measurement Jig. Computerized MFM System. Goals :. Error free High resolution Sensor Inexpensive digital solution Ready Availability. Bipolar Analog VFC. Simplified VFC Schematic. +Vref. V/f AD460. R1.

beau-serrano
Download Presentation

Digital Aid in Computerized Magnetic Field Mapping

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. Digital Aid in Computerized Magnetic Field Mapping Sarbajit Pal PcAPAC 2000

  2. MFM measurement Jig

  3. Computerized MFM System

  4. Goals : • Error free High resolution Sensor • Inexpensive digital solution • Ready Availability

  5. Bipolar Analog VFC

  6. Simplified VFC Schematic +Vref V/f AD460 R1 RG2 A1 D1 Q1 A3 R2 R2 RG1 I2 I3 Q2 GATES D2 A2 Q3 Q4 Level Shift UP Down

  7. Analog solution Constraints • Comparator • Micro-volt Resolution • V and pA offset • low drift & low noise • Good AC Response Complex and Unsatisfactory circuits Directional Ambiguity Multiple sources of error Results In...

  8. PC Aided Digital Bipolar VFC • High frequency 24 bit counters • Asynchronous counting • Interrupt Generation • DMA Transfer • Driver routines • Pseudo-Multitasking Results In... • Moderate resolution error free continuous field gradient sensor

  9. Bipolar Digital VFC

  10. Timing Diagram

  11. END Thank You

More Related