公开(公告)号：US09715029B2

公开(公告)日：2017-07-25

申请号：US15017014

申请日：2016-02-05

申请人： KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

发明人： Sung-Ho Cho ,  Hyun-Key Jung ,  Hyosun Lee ,  Hyoungrea Rim

IPC分类号： G01R1/04 ,  G01V3/08

CPC分类号： G01V3/088 ,  G01R1/04 ,  Y02A90/342

摘要： An electric field sensor for underwater, including a sensing unit that senses a change in an electric field and transfers a sensing signal of the electric field to a signal line, a waterproof sealing unit that keeps a signal transferring portion of the sensing unit in a waterproof state, and a water-passing protection unit that shields and protects an exposed portion of the sensing unit. The sensing unit includes a nonconductive hollow pipe connected to the signal line, a sheet of carbon fiber that is wound around the outer surface of the hollow pipe and that senses an electric field, and a terminal ring that is electrically conductively installed at an end portion of the sheet of carbon fiber to provide a connection portion of the signal line and that is watertightly sealed by the waterproof sealing unit.