Automated Transverse Crack Mapping System with Optical Sensors and Big Data Analytics

Sensors

Chungwook Sim¹  Kwanghee Won² 

[1] Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Omaha, NE 68182, USA;Electrical Engineering and Computer Science, South Dakota State University, Brookings, SD 57007, USA;

关键词: optical sensor;    computer vision;    big data pipeline;    automated transverse crack mapping;    bridge deck;   

DOI  :  10.3390/s20071838

来源: DOAJ

【 摘 要 】

Transverse cracks on bridge decks provide the path for chloride penetration and are the major reason for deck deterioration. For such reasons, collecting information related to the crack widths and spacing of transverse cracks are important. In this study, we focused on developing a data pipeline for automated crack detection using non-contact optical sensors. We developed a data acquisition system that is able to acquire data in a fast and simple way without obstructing traffic. Understanding that GPS is not always available and odometer sensor data can only provide relative positions along the direction of traffic, we focused on providing an alternative localization strategy only using optical sensors. In addition, to improve existing crack detection methods which mostly rely on the low-intensity and localized line-segment characteristics of cracks, we considered the direction and shape of the cracks to make our machine learning approach smarter. The proposed system may serve as a useful inspection tool for big data analytics because the system is easy to deploy and provides multiple properties of cracks. Progression of crack deterioration, if any, both in spatial and temporal scale, can be checked and compared if the system is deployed multiple times.

【 授权许可】

Unknown