高温高耐熱性円筒型光ファイバ複合センサによる温度・圧力同時計測
Siwei Zhang1, Quan Liu1, Jiaqi Liu2
1School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China.
Sensors (Basel, Switzerland)
|January 28, 2026
まとめ
本研究では、高温・高圧同時モニタリングのための新規光ファイバセンサを提案する。ハイブリッド型拡張ファブリ・ペロー干渉計-ファイバグレーティング（EFPI-FBG）センサは、最大600℃の過酷な環境下で正確な計測を実現する。
科学分野:
- * 材料科学・工学; * 光センシング技術; * 計測・測定技術
背景:
- * 極限環境（高温、高圧）における堅牢なセンサの需要。; * 過酷な産業および研究環境における既存センサの限界。; * 温度と圧力の同時計測の必要性。
研究 の 目的:
- * 同時温度・圧力センシングのための新規光ファイバ複合センサの開発と検証。; * 高温・高圧モニタリングの課題への対応。; * 過酷な環境向けの高性能センサの作成。
主な方法:
- * 拡張ファブリ・ペロー干渉計（EFPI）とファイバグレーティング（FBG）を統合した円筒形センサの設計。; * 圧力による軸方向変形を利用してEFPIキャビティ長を変化させる円筒圧力チャンバーの使用。; * 温度補償のためにFBGを使用し、一端を圧力の影響から隔離するためにフローティングさせる。
主要な成果:
- * EFPIキャビティ長と圧力の線形関係を実証（感度: 0.171 μm/MPa、R²: 0.9986）。; * 600℃、20 MPaまでの温度・圧力下で安定したセンサ動作を達成。; * 正確な同時二重パラメータセンシングのためのデカップリング行列を実装。
結論:
- * EFPI-FBGハイブリッドセンサは、過酷な環境下での同時温度・圧力計測に実行可能なソリューションを提供する。; * センサ設計は温度干渉を効果的に補償し、正確な圧力読み取りを保証する。; * 実証された性能は、高性能モニタリングアプリケーションにおけるセンサの可能性を検証する。
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