公开(公告)号：US20220196598A1

公开(公告)日：2022-06-23

申请号：US17551799

申请日：2021-12-15

Applicant: Industrial Technology Research Institute

Inventor： Mean-Jue Tung ,  Shi-Yuan Tong ,  Yu-Ting Huang

IPC: G01N27/72 ,  G01B11/14

Abstract: A magnetic field structure is provided and includes: two magnetic poles disposed in a magnetic circuit path and opposite to one another to form a space therebetween for receiving an element to be tested; a magnetic field source for providing a magnetic field in the space; and an optical positioning element disposed in one of the two magnetic poles for optically positioning the element to be tested. Therefore, the magnetic field structure can simultaneously provide a strong magnetic field and a precise positioning function.

公开(公告)号：US10890611B2

公开(公告)日：2021-01-12

申请号：US16232810

申请日：2018-12-26

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Mean-Jue Tung ,  Shi-Yuan Tong ,  Yu-Ting Huang

IPC: G01R29/12 ,  G01N27/60 ,  G01R29/24

Abstract: An electrostatic measuring method for an inner wall of a fluid pipeline includes a step of disposing a grounded metal plate to an outer wall of the fluid pipeline; a step of forming a grounding effect through the grounded metal plate and the outer wall, wherein the grounded metal plate has induced charges, the induced charges combine outer-wall existing charges on the outer wall to form total outer-wall charges, and the total outer-wall charges are related to charges to be measured on the inner wall of the fluid pipeline; and, a step of measuring an electrostatic voltage above the grounded metal plate so as to obtain the charges to be measured on the inner wall of the fluid pipeline. In addition, an electrostatic measuring system for inner wall of fluid pipeline is also provided.