公开(公告)号：US20160123790A1

公开(公告)日：2016-05-05

申请号：US14597373

申请日：2015-01-15

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES (KIGAM)

Inventor： Heejun SUK ,  Dong-Chan KOH ,  Jang-Hee HAN

IPC: G01F23/46 ,  E21B47/04

CPC classification number: G01F23/72 ,  G01V1/159

Abstract: Provided is a sensor for measuring water levels of groundwater and surface water using magnetostriction displacement and multi measurement system for groundwater and surface water by using the same. The sensor includes an outer case having a hollow space therein and extending in a longitudinal direction, a magnetostriction line spaced apart from an inner wall in the hollow space of the outer case to extend in the longitudinal direction, a floating permanent magnet guided along the magnetostriction line to be movable in the longitudinal direction, the floating permanent magnet being changed in position to correspond to a water level; and a transceiver applying a current pulse into the magnetostriction line to receive an elastic wave that is generated while first magnetic fields formed in a circumferential direction of the magnetostriction line by the current pulse crosses a second magnetic fields formed in an axial direction of the magnetostriction line by the permanent magnet.

Abstract translation: 提供了一种用于使用磁致伸缩位移和地下水和地表水的多测量系统来测量地下水和地表水的水位的传感器。 传感器包括外壳，其中具有中空空间并沿纵向方向延伸，磁致伸缩线与外壳的中空空间中的内壁间隔开以沿纵向方向延伸，沿着磁致伸缩导向的浮动永磁体 线可以在纵向方向上移动，浮动永磁体改变位置以对应于水位; 以及收发器，其将电流脉冲施加到所述磁致伸缩线中，以接收通过所述电流脉冲在所述磁致伸缩线的圆周方向上形成的第一磁场与形成在所述磁致伸缩线的轴向方向上的第二磁场相交的弹性波 由永久磁铁。