ELECTROMAGNETIC AND MAGNETO-ELECTRIC EFFECT TYPE SENSOR
摘要
<p>An electromagnetic and magneto-electric effect type sensor comprises an electromagnetic energy releasing coils (L1) and a magnetic energy balancing coils (L2) and a measured ferromagnetic member; the electromagnetic energy releasing coils (L1) are placed near and parallelly the magnetic energy balancing coils (L2), and a high permeability magnetic core are used in both coils; the constant current i1 is inputted into the electromagnetic energy releasing coils to generate magnetic field B1, and the magnetic field B1 and the stable weak magnetic field B0 of the ferromagnetic member generate the correlative magnetic field B, and the magnetic energy balancing coils are placed into the correlating magnetic field. A method is provided also to measure the electromagnetism of the ferromagnetic member using the electromagnetic and magneto-electric effect type sensor.</p>
