The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Oct. 18, 2021
China Jiliang University, Zhejiang, CN;
Nanying Shentu, Zhejiang, CN;
Qing Li, Zhejiang, CN;
Ge Shi, Zhejiang, CN;
Feng Wang, Zhejiang, CN;
Sheng Wang, Zhejiang, CN;
CHINA JILIANG UNIVERSITY, Zhejiang, CN;
Abstract
Disclosed are an underground displacement three-dimensional measurement system and method based on a double mutual inductance voltage contour. The system comprises an on-site measuring device and a remote monitoring system. The on-site measuring device is mainly formed by serially connecting N sensing units and an underground displacement information lumping unit by means of a power line and a communication line. The N sensing units are serially connected, and then are connected between an underground immovable layer and the ground. Each sensing unit comprises a PVC sleeve, a cylindrical air-core coil, a cylindrical magnetic core coil, and a PCB. Two adjacent sensing units form a measurement unit, and relative horizontal displacement and relative vertical displacement are measured by means of cooperation between the cylindrical air-core coil and the cylindrical magnetic core coil of a relative reference unit and the cylindrical air-core coil of the relative displacement unit.