Results 21 to 30 of about 202,741 (162)

Dynamic Displacement Estimation for Long-Span Bridges Using Acceleration and Heuristically Enhanced Displacement Measurements of Real-Time Kinematic Global Navigation System

open access: yesSensors, 2020
In this paper, we propose a dynamic displacement estimation method for large-scale civil infrastructures based on a two-stage Kalman filter and modified heuristic drift reduction method.
Kiyoung Kim, Hoon Sohn
doaj   +1 more source

Development of a Reference-Free Indirect Bridge Displacement Sensing System

open access: yesSensors, 2021
Bridge displacement measurements are important data for assessing the condition of a bridge. Measuring bridge displacement under moving vehicle loads is helpful for rating the load-carrying capacity and evaluating the structural health of a bridge ...
Jongbin Won   +4 more
doaj   +1 more source

Optical Fiber Displacement Sensor Based on Microwave Photonics Interferometry

open access: yesSensors, 2018
An optical fiber displacement sensor based on the microwave photonics interferometric (MWPI) method is proposed and experimented, which provides an ideal solution for large range displacement measurement with high resolution.
Hao Dong   +4 more
doaj   +1 more source

Port Structure Inspection Based on 6-DOF Displacement Estimation Combined with Homography Formulation and Genetic Algorithm

open access: yesApplied Sciences, 2021
A vision sensor-based 6-DOF displacement evaluation method incorporating a genetic algorithm was proposed to monitor the critical defects of port infrastructure, such as deflection, slope, and slip.
Jiyoung Min   +3 more
doaj   +1 more source

Modeling Displacement Measurement using Vibration Transducers [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2014
This paper presents some aspects regarding to small displacement measurement using vibration transducers. Mechanical faults, usages, slackness’s, cause different noises and vibrations with different amplitude and frequency against the normal sound and ...
AGOSTON Katalin
doaj  

Research progress and prospects of grating linear displacement measurement technology

open access: yesDiance yu yibiao
Linear displacement measurement technology plays an essential role in the precision manufacturing sector, ensuring the accuracy of machining processes.
ZHAO Zhicai   +4 more
doaj   +1 more source

A Noncontact FMCW Radar Sensor for Displacement Measurement in Structural Health Monitoring

open access: yesSensors, 2015
This paper investigates the Frequency Modulation Continuous Wave (FMCW) radar sensor for multi-target displacement measurement in Structural Health Monitoring (SHM).
Cunlong Li   +5 more
doaj   +1 more source

Laser Displacement Sensor Measurement Method Based on Residual Compensation [PDF]

open access: yesJisuanji gongcheng, 2018
Due to linear fitting,the measurement error of laser triangulation ranging technique is large,and the linearity decreases in the case of large range ranging.To solve this problem,a high precision laser displacement sensor measurement method based on ...
ZHAO Jinghai,SUN Feixian
doaj   +1 more source

Comparison of plane mirror vs retroreflector performance for laser-self-mixing displacement sensors [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
The behavior of a displacement optical sensor based on the Laser-Self-Mixing effect employing a plane mirror (PT) and a solid corner-cube (CC) as moving target is analyzed.
Ottonelli S.   +4 more
doaj   +1 more source

A MODWT-Based Algorithm for the Identification and Removal of Jumps/Short-Term Distortions in Displacement Measurements Used for Structural Health Monitoring

open access: yesIoT, 2021
Researchers have made substantial efforts to improve the measurement of structural reciprocal motion using radars in the last years. However, the signal-to-noise ratio of the radar’s received signal still plays an important role for long-term monitoring ...
Davi V. Q. Rodrigues   +2 more
doaj   +1 more source

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