201 半導体レーザーによる高感度傾斜角検出器の検出精度の向上に関する研究(計測)(オーガナイズドセッション(a)材料力学・材料強度に関する新展開)

概要

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A high-sensitive tiltmeter which consists of a simple optical system with a laser diode and a quadrant photo diode detects a minute crustal movement as the angle of tilt. In this system, slight misaligment of the optical system emerges as skewness of the laser spot. In order to reduce this skewness, we changed reflectors from the surface of hydrargyrum to a mirror placed on the viscoid liquid. We experimentally evaluated a change of the sensitivity as a function of direction of the laser spot displacement. The experimental results show the improvement in the skewness of a laser spot. This system contains 4.3×10^<-7> [rad] accuracy for detecting the tilt angle.
一般社団法人日本機械学会の論文
2000-09-25