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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.:

US 12774975 B1

PDFFull Text
Date of Patent:
Oct. 27, 2026

Filed:

Jul. 28, 2023

Non-invasive time domain reflection probe calibration method and system

Applicants:

China Jikan Research Institute of Engineering Investigations and Design, Co., Ltd, Xi'an, CN;

Xi'an Jiaotong University, Xi'an, CN;

Inventors:

Jie Cao, Xi'an, CN;

Long Wang, Xi'an, CN;

Jiwen Zhang, Xi'an, CN;

Zaixin Wan, Xi'an, CN;

Qingyi Mu, Xi'an, CN;

Dongjing Wang, Xi'an, CN;

Yuanqiang Zhou, Xi'an, CN;

Zhi Liu, Xi'an, CN;

Long Zhang, Xi'an, CN;

Hui Li, Xi'an, CN;

Jian Chen, Xi'an, CN;

Teng Yang, Xi'an, CN;

Lei Ran, Xi'an, CN;

Jiao Lin, Xi'an, CN;

Xiao Dong, Xi'an, CN;

Shuai Liu, Xi'an, CN;

Weiwei Zhao, Xi'an, CN;

Assignees:

China Jikan Research Institute Of Engineering Investigations And Design, Co., Ltd, Xi'an, CN;

Xi'an Jiaotong University, Xi'an, CN;

Attorney:

Sang Young Han

Primary Examiner:

Eman A Alkafawi

Assistant Examiner:

Suresh K Rajaputra

Int. Cl.
CPC ...
G01N 27/04 (2006.01); G01N 33/24 (2006.01);
U.S. Cl.
CPC ...
G01N 27/048 (2013.01); G01N 33/24 (2013.01);
Abstract

A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil. The calibration method has an accurate calibration result, a wide application range, a convenient operation and a strong practicability.

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Cao, Jie. (2026). Non-invasive time domain reflection probe calibration method and system (U.S. Patent No. 12774975). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774975

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