Apparatus for non-polarity correction and displacement measurement of object using search coil type sensor

An apparatus for correcting non-polarity and measuring displacement of an object containing iron (Fe) using a search-coil type sensor, the apparatus comprising:

• a sensor including a housing having an inner space, a plurality of cores disposed in the inner space of the housing, and a plurality of coils wound around respective portions of an outer circumferential surface of the housing, each of the portions corresponding to each of respective positions of the plurality of cores,
• wherein the plurality of coils are disposed in series with each other,
• wherein one core of the plurality of cores is disposed apart from another core, and
• wherein the apparatus is configured to have an induced magnetic field due to a distance change with respect to the object containing iron (Fe).

An apparatus for correcting non-polarity and measuring displacement of an object containing iron (Fe) using a search-coil type sensor, the apparatus comprising:

• a plurality of sensors, each including a housing having an inner space, a core disposed in the inner space of the housing, and a coil wound around a portion of an outer circumferential surface of the housingshousing, the portion corresponding to a position of the core,
• wherein the plurality of sensors are radially disposed with each other,
• wherein the apparatus is configured to have an induced magnetic field due to a distance change with respect to the object containing iron (Fe),
• wherein one end of a coil disposed on one sensor of the plurality of sensors is connected to one end of another coil disposed on another sensor of the plurality of sensors, and another end of the coil disposed on the one sensor is connected to another end of the another coil disposed on the another sensor, and
• wherein a +pole of the coil disposed on the one sensor is connected to the +pole of the another coil disposed on the another sensor, and a −pole of the coil disposed on the one sensor is connected to a −pole of the coil disposed on the another sensor.