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:
Oct. 07, 2025
Filed:
May. 20, 2025
Guangzhou Municipal Engineering Testing Co., Ltd., Guangzhou, CN;
Guangzhou Institute of Building Science Group Co., Ltd., Guangzhou, CN;
Xiaoli Sun, Guangzhou, CN;
Zhiguo Zhou, Guangzhou, CN;
Jun Yang, Guangzhou, CN;
Sijia Zhu, Guangzhou, CN;
Linbin Wang, Guangzhou, CN;
Feng Li, Xinjiang, CN;
GUANGZHOU MUNICIPAL ENGINEERING TESTING CO., LTD., Guangzhou, CN;
GUANGZHOU INSTITUTE OF BUILDING SCIENCE GROUP CO., LTD., Guangzhou, CN;
Abstract
Disclosed herein is a bolt axial force measurement method, device, apparatus, and readable storage medium, the method comprises steps of: capturing an image of a bridge bolt; identifying an outer edge of a nut, a centroid of the nut, and a circular position of a laser spot in a captured image of the bridge bolt; projecting a calibration laser spot onto a bolt plate and obtaining a current frame as a bolt-detection image; performing dimensional calibration on the bolt-detection image and determining a displacement of each of the pre-calibrated feature points; calculating a bolt axial force value based on the displacement. The solution captures images of the bridge bolts and analyzes positions of each of the pre-calibrated feature points in the images; thus, the bolt axial force can be measured non-destructively, and non-rotational loosening of bolts can be identified.