Extension of the Capture Range Under High-Speed Motion Using Galvanometer Mirror

Inspection of tunnel surfaces on highway is an important task in ensuring transportation safety and stability. Although an existing method used for scanning tunnel surfaces while traveling on the highway is efficient and can prevent traffic violations, its scanning range in every traveling was limit...

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Bibliographic Details
Published in2020 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) pp. 1854 - 1859
Main Authors Ezaki, Yuriko, Moko, Yushi, Ikeda, Haruka, Hayakawa, Tomohiko, Ishikawa, Masatoshi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2020
Subjects
Cameras
High-speed optical techniques
Inspection
Mirrors
Optical imaging
Optical pulses
Resonant frequency
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Summary:Inspection of tunnel surfaces on highway is an important task in ensuring transportation safety and stability. Although an existing method used for scanning tunnel surfaces while traveling on the highway is efficient and can prevent traffic violations, its scanning range in every traveling was limited. Thus, we propose a method to extend the range of scanning per trial using a galvanometer mirror. The galvanometer mirror is used for changing the angle of scanning degree and capturing at an angle equivalent to twice the angle of camera's view, which contributes to improve the efficiency of tunnel inspections. The mirror must move fast enough to change the angle within one shot. However, resonance noise of the galvanometer mirror is generated owing to its physical rigidity. Therefore, we propose an additional noise suppression method to adjust the widths of the input pulse.
ISSN:2159-6255
DOI:10.1109/AIM43001.2020.9159039