SYSTEM AND METHOD FOR COIL SENSOR DESIGN, ALIGNMENT AND TUNING

摘要

A sensor includes inductively coupled coils (100, 104). Alignment of the coils (100, 104) may be maintained by constraining relative movement of the structures (102, 106) into which each of the coils (100, 104) is embedded. Alignment of the coils (100, 104) may be established by maintaining the transponder coil (104) stationary while moving the reader coil (100) with respect to the transponder coil (104) and monitoring the current at the source supplying the reader coil (100). When the current at the source is at an extreme value (substantially maximized or minimized), the reader coil (100) and the transponder coil (104) are aligned. Additionally disclosed is an iterative process for designing coil geometries and resonant circuits for a sensor employing inductively coupled coils (100, 104).