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:
Apr. 04, 2023
Filed:
Nov. 09, 2018
Hohai University, Jiangsu, CN;
Da Chen, Jiangsu, CN;
Baodong Lou, Jiangsu, CN;
Yingdi Liao, Jiangsu, CN;
Yazhou Zhao, Jiangsu, CN;
Lijun Hou, Jiangsu, CN;
Abstract
A gate detection robot based on a giant magnetoresistance element includes a support, a guide wheel, and two driving wheels are provided at the bottom of the support. The support is provided with a controller, a range-based localization module, and a magnetic flaw detection sensor based on the giant magnetoresistance element. The magnetic flaw detection sensor includes an excitation mechanism, a giant magnetic sensor, and two magnetic concentrators. During detection, the excitation mechanism magnetizes a gate with a magnetic field as a medium. When the surface of the gate has a defect, the magnetic conductivity of the local area is reduced and the magnetic resistance is increased so that magnetic lines are distorted and diffused outside the gate to form a detectable leakage magnetic field signal, the signal is transmitted to the controller, so that the controller obtains a specific location of the detection robot.