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Optic-electronics stereo system for spatial position measurement of railway track

Optoelectronics Letters 2022年第7期18卷 434-439页

作者： igor konyakhin XIAO Han LI Renpu YANG Jiawen HUANG Guifu TAN Xin Faculty of Engineering Research Applied Optic ITMO UniversitySaint Petersburg 197101Russia Chongqing Key Laboratory of Autonomous Navigation and Microsystem Chongqing University of Post and TelecommunicationsChongqing 400065China

Railway departments in various countries are looking for a technology with convenient operation,low price,excellent measurement performance and stability for spatial position measurement of railway ***,we design an optic-electronics stereo system based on the principle of optical stereo *** experimental verification in the real railway environment shows that the performance of the system is that the longitudinal relative displacement measurement range is 200—10000 mm,the relative distance measurement range is 4500 mm and the measured root mean square(RMS)error value is less than 1.1 mm in the whole ***,it meets the relevant needs of the Russian Ministry of railways.

关键词： measurement. system price

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Multi-matrix opto-electronic system for measuring deformation of the millimeter range radiotelescope elements

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Optoelectronics Letters 2019年第2期15卷 144-146页

作者： LI Ren-pu konyakhin igor Tong Minh Hoa ZHOU Min Chongqing Engineering Research Center of Intelligent Sensing Technology and Microsystem Chongqing University of Post and Telecommunications Faculty of Applied Optic ITMO University

A novel optical instrument is proposed and studied to measure the deformation of each connection point for a mirror, which includes 24 multi-matrix base units and can be used in millimeter-scale signal reflection *** investigations reveal that the error of measurement is σ=8.7×10^(-3) mm at a distance of 5 500 mm, which allows to measure the linear deformation of a radiotelescope with the mirror diameter of 70 m.

关键词： measuring radiotelescope instrument

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A 2D quadrangular pyramid photoelectric autocollimator with extended angle measurement range

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Optoelectronics Letters 2021年第8期17卷 468-474页

作者： konyakhin igor LI Renpu ZHOU Min Dang Dinh Duan Nikitin Mikhail HUANG Guifu YANG Jiawen TAN Xin Faculty of Applied Optic 1TMO University49 Kronverkskiy ProspectSaint Petersburg 197101Russia Chongqing Engineering Research Center of Intelligent Sensing Technology and Microsystem Chongqing University of Post and TelecommunicationsChongqing 400065China School of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China

A photoelectric autocollimator with high accuracy and extended measurement range based on the quadrangular pyramid is proposed,and the corresponding algorithms are also deduced.A new image processing algorithm has been proposed to improve the accuracy,and the corresponding errors are also estimated,the error does not exceed half a pixel when the distance between the marks more than two *** experimental results have verified that the measurement range of the proposed two-dimensional(2D)quadrangular pyramid photoelectric autocollimator can be increased 2 times than that of the flat mirror photoelectric autocollimator from 10′to 15′.The accuracy is better than 1″when the deflection is less than 15′.

关键词： tocol pyramid photoelectric

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