Displacement measurement method based on integrated grating interferometry with two-wavelength lasers

2012 ◽  
Vol 20 (11) ◽  
pp. 2433-2437
Author(s):  
陈烽 CHEN Feng ◽  
叶雄英 YE Xiong-ying ◽  
伍康 WU Kang ◽  
冯金扬 FENG Jin-yang
Keyword(s):  
Measurement Method ◽  
Displacement Measurement

A micro displacement measurement method based on PGC demodulation of space optics

2017 ◽  
Author(s):  
Zhenyu Xiong ◽  
Xudong Yu ◽  
Xingwu Long ◽  
Youguang Guo
Keyword(s):  
Measurement Method ◽  
Displacement Measurement ◽  
Space Optics

Fast, sub-pixel accurate, displacement measurement method: optical and terahertz systems

2020 ◽  
Vol 45 (24) ◽  
pp. 6611
Author(s):  
Min Wan ◽  
John J. Healy ◽  
John T. Sheridan
Keyword(s):  
Measurement Method ◽  
Displacement Measurement

A Multi-Point Radio Displacement Measurement Method for Testing Quake-Proof Structure

2002 ◽  
Author(s):  
Atsushi Okamura ◽  
Tadashi Mikoshiba ◽  
Wataru Yosizaki ◽  
Hideki Nagai ◽  
Atsushi Mogi ◽  
...  
Keyword(s):  
Signal Processing ◽  
Measurement Method ◽  
Experimental System ◽  
Digital Signal ◽  
Reference Points ◽  
Displacement Measurement ◽  
Shaking Table ◽  
Processing Unit ◽  
Signal Processing Unit ◽  
Phase Differences

In this paper, we propose a remote 3-D displacement measurement method using the radio wave for indoor shaking table facilities. It also shows the effectiveness of the proposed method by some radio experiments using a shaking table. The proposed measurement system consists of simple transmitters attached to each reference point and several receiving antennas at different places connected with a digital signal processing unit. The locations of the transmitters are simultaneously estimated by observing the phase differences between signals at receiving antennas. This prototype radio experimental system consists of 3 transmitters of frequency 2.45GHz, 4 receiving antennas and a microcomputer. We made the demonstration for the reconstructions of the 0.1Hz and 2Hz sinusoidal excitations at 3 reference points of the testing structure on the shaking table. The accuracy of estimated displacement was several centi-meters to several mili-meters.

Study on Three-Dimensional Displacement Measurement Method of EAST Cold Magnet Based on Computer Vision

2014 ◽  
Vol 33 (5) ◽  
pp. 489-496 ◽  
Author(s):  
Qingsheng Gao ◽  
Weibin Xi ◽  
Yuntao Song ◽  
Yuhe Li ◽  
Yuanjiang Chen ◽  
...  
Keyword(s):  
Computer Vision ◽  
Measurement Method ◽  
Three Dimensional ◽  
Displacement Measurement
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