US 12,135,227 B2
Multi-measurement device using search coil type sensor
Jae Hun Choi, Seoul (KR); Tae Kyun Kim, Guri-si (KR); and Dong Hyung Kim, Seoul (KR)
Assigned to Jae Hun Choi, Seoul (KR); and Tae Kyun Kim, Guri-si (KR)
Appl. No. 17/915,040
Filed by Jae Hun Choi, Seoul (KR); and Tae Kyun Kim, Guri-si (KR)
PCT Filed Apr. 5, 2021, PCT No. PCT/KR2021/004222
§ 371(c)(1), (2) Date Sep. 27, 2022,
PCT Pub. No. WO2021/210831, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 10-2020-0045116 (KR), filed on Apr. 14, 2020.
Prior Publication US 2023/0168111 A1, Jun. 1, 2023
Int. Cl. G01D 5/20 (2006.01)
CPC G01D 5/20 (2013.01) 7 Claims
OG exemplary drawing
 
1. A multi-measurement apparatus using a search-coil type sensor, the multi-measurement apparatus comprising:
sensor modules, each having one or more sensors,
wherein each of the one or more sensors includes housing having an inner space, a core disposed in the inner space of the housing, a coil wound around a portion of an outer circumferential surface of the housing, the portion corresponding to a position of the core;
impedance matches, each being connected to each of the sensor modules, the impedance matchers being configured to perform impedance matching; and
amplifiers, each being connected to each of the impedance matchers, the amplifiers being configured to amplify a fine current and voltage generated due to objects containing iron (Fe) approaching to the sensor modules,
wherein the sensor modules are configured to have respective induced magnetic fields due to a change in distance from the objects,
wherein the sensor modules are configured to measure movement of one or more of the objects, and
wherein one end of a coil disposed in one sensor of the one or more sensors is connected to one end of a coil disposed in another sensor of the one or more sensors, and another end of the coil disposed in the one sensor is connected to another end of the coil disposed in the another sensor.