Results 21 to 30 of about 2,558,289 (248)

A Large Range Linear Displacement Calibration System Based on Coordinate Measurement and Laser Interference

open access: yesMATEC Web of Conferences, 2018
The linear displacement sensor is widely used in industrial measurement. The linear displacement sensor with measuring range less than 200mm is usually measured on a universal length measuring instrument.
Jiang Zhihua, Zeng Yanhua, Cai Zhenglong
doaj   +1 more source

Performance Analysis of a Noncontact Plastic Fiber Optical Fiber Displacement Sensor with Compensation of Target Reflectivity [PDF]

open access: yes, 2013
An inexpensive fiber-based noncontact distance sensor specific for monitoring short-range displacements in micromachining applications is presented. To keep the overall costs low, the sensor uses plastic optical fibers and an intensiometric approach ...
Alberto Vallan   +8 more
core   +1 more source

Characterization of a Low-Cost Optical Flow Sensor When Using an External Laser as a Direct Illumination Source

open access: yesSensors, 2011
In this paper, a low cost optical flow sensor is combined with an external laser device to measure surface displacements and mechanical oscillations. The measurement system is based on applying coherent light to a diffuser surface and using an optical ...
Jordi Palacín   +4 more
doaj   +1 more source

DETERMINING THE TORQUE LOADING OF THE CYCLOID GEAR [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2018
Based on experimental investigations, a very close correlation was established between the torque loading of the cycloid gear and the laser sensor’s indications measuring the displacement of the gear body. The method is given and the relationship between
Zbigniew PAWELSKI, Zbigniew ZDZIENNICKI
doaj   +1 more source

Reliability Assessment of a Vision-Based Dynamic Displacement Measurement System Using an Unmanned Aerial Vehicle

open access: yesSensors, 2023
In recent years, many studies have been conducted on the vision-based displacement measurement system using an unmanned aerial vehicle, which has been used in actual structure measurements.
Hongjin Kim, Guyeon Kim
doaj   +1 more source

Detection principle and verification of non-contact displacement meter with pico-meter resolution

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
Displacement sensors based on laser or optical fiber technology are recognized for their capacity for non-contact distance measurement based on reflection from an object, but with limited measurement distance and resolution.
Hideaki TAMIYA   +3 more
doaj   +1 more source

Multi-sensor system using plastic optical fibers for intrinsically safe level measurements [PDF]

open access: yes, 2004
A system for measuring liquid level in multiple tanks using optical fibe technology has been developed. Oil fiel service industry or any sector requiring liquid level measurements in flammabl atmospheres can be benefite from this intrinsically safe ...
Gonzalo, Ana B.   +3 more
core   +1 more source

Reduction of Crosstalk Errors in a Surface Encoder Having a Long Z-Directional Measuring Range

open access: yesSensors, 2022
A modified two-axis surface encoder is proposed to separately measure both the in-plane displacement and the Z-directional out-of-plane displacement with minor crosstalk errors.
Yifan Hong   +5 more
doaj   +1 more source

Refractive Index Fiber Laser Sensor by Using a Fiber Ball Lens Interferometer with Adjustable Free Spectral Range

open access: yesSensors, 2023
In this work, a fiber laser refractometer based on a fiber ball lens (FBL) interferometer is proposed. The linear cavity erbium-doped fiber laser uses an FBL structure acting as a spectral filter and sensing element for determining the RI of a liquid ...
Ricardo Iván Álvarez-Tamayo   +1 more
doaj   +1 more source

Characterisation of PZT thin film micro-actuators using a silicon micro-force sensor [PDF]

open access: yes, 2007
This paper reports on the measurements of displacement and blocking force of piezoelectric micro-cantilevers. The free displacement was studied using a surface profiler and a laser vibrometer.
Ensell, Graham   +10 more
core   +1 more source

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