Results 11 to 20 of about 202,741 (162)

2D-LiDAR-Sensor-Based Retaining Wall Displacement Measurement System

open access: yesApplied Sciences, 2022
The displacement of retaining walls is measured using inclinometers in order to evaluate the safety of the wall. However, inclinometers have three problems: they (1) are difficult to install, (2) have local displacement detection, and (3) are measured ...
Jun-Sang Kim   +2 more
doaj   +1 more source

CPLD-Based Displacement Measurement System for Nanoscale Grating Ruler

open access: yesJournal of Chemistry, 2020
With the continuous development of science and technology, industrial production has higher and higher requirements for precision. Many high-precision measurement technologies emerge as the times require, and nanoscale grating ruler displacement ...
Jiyuan Sun, Chunlin Tian
doaj   +1 more source

A New 2D Displacement Measurement Method Based on an Eddy Current Sensor and Absolute Encoding

open access: yesMachines, 2022
A new method of two-dimensional (2D) plane displacement measurement based on an eddy current sensor is proposed in this paper. A series of grooves with different widths and depths are graved on the linear displacement table to form 2D absolute coding ...
Kunlong Ma   +4 more
doaj   +1 more source

A Laser Triangulation Displacement Sensor Based on a Cylindrical Annular Reflector

open access: yesPhotonics, 2023
The ellipticity of the spot caused by laser jitter has a significant effect on the measurement accuracy of the traditional laser triangulation method. In order to overcome the influence of laser characteristics on measurement and improve the accuracy of ...
Jiaqi Li, Wei Tao, Hui Zhao
doaj   +1 more source

A New Method to Verify the Measurement Speed and Accuracy of Frequency Modulated Interferometers

open access: yesApplied Sciences, 2021
The measurement speed and measurement accuracy of a displacement measuring interferometer are key parameters. To verify these parameters, a fast and high-accuracy motion is required.
Toan-Thang Vu   +4 more
doaj   +1 more source

Real-Time and Long-Distance Measurement of Displacement Based on Optoelectronic Oscillator

open access: yesIEEE Access, 2019
A frequency-encoded real-time and long-distance displacement measurement method based on two cross-referencing optoelectronic oscillators (OEOs) is proposed and experimentally demonstrated.
Zhiqiang Fan   +5 more
doaj   +1 more source

Experimental study on lateral displacement measurement using air-coupled ultrasound transducers

open access: yesMechanical Engineering Journal, 2014
We propose a novel measurement method for directly measuring the lateral displacement of structures by using air-coupled ultrasound transducers. The normally-distributed far field of an ultrasound transducer in a lateral direction is taken advantage of ...
Iwao MATSUYA   +2 more
doaj   +1 more source

Design and Testing of Inertial System for Landslide Displacement Distribution Measurement

open access: yesSensors, 2020
Landslide displacement monitoring plays a fundamental role in the study of landslide evolution mechanisms, forecasting, risk assessment, prevention, and control. To fill the deficiencies of traditional instrumentation for measuring landslide displacement
Yongquan Zhang   +7 more
doaj   +1 more source

An underground three-dimensional displacement measurement system

open access: yesMATEC Web of Conferences, 2018
With the development of society, the damage of geological disaster to people's life and property is more serious, so the improvement of monitoring means of geological disaster is particularly urgent, there are some shortcomings in traditional monitoring ...
Cheng Yifeng   +3 more
doaj   +1 more source

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