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:
Jul. 14, 2026
Filed:
Dec. 14, 2022
Nec Corporation, Tokyo, JP;
Hemant Shivsagar Prasad, Tokyo, JP;
Takashi Matsushita, Tokyo, JP;
Daisuke Ikefuji, Tokyo, JP;
Tomoyuki Hino, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A distributed optical fiber sensing (DFOS) system includes a non-transitory computer readable medium configured to store instructions thereon. The DFOS system includes a processor connected to the non-transitory computer readable medium. The processor is configured to receive DFOS data from a sensor connected to an optical fiber, wherein the optical fiber is adjacent a roadway having a bridge. The processor is further configured to filter the DFOS data based on a frequency range. The processor is further configured to generate a plurality of spread features, wherein each spread feature of the plurality of spread features corresponds to a channel of a plurality of channels of the filtered DFOS data. The processor is further configured to perform binarization of the plurality of spread features. The processor is further configured to identify a location of the bridge along the roadway based on results of the binarization of the plurality of spread features.