ファイバーブラッググレーティングセンシング技術百科事典 - FBG FAQ - FBGセンサー FAQ - FBG復調器 FAQ - FBG一般的なアプリケーション問題分析

This article analyzes the advantages と application benefits brought by the small size of fiber bagg grating (FBG) sensors, including improved sensitivity, expanded usage environments, と convenience in engineering construction. It also introduces the production of the small-sized 'OFSCN® Capillary Seamless Steel Tube Series FBG Sensor' (also known as micro FBG probes or FBG sensors) by DCYS, which can be used for measuring various physical quantities such as temperature, strain, と stress in extreme environments. Partial physical images are provided.

1. 小型FBGセンサー（FBGプローブ）の構造と直径の紹介

ほとんどのセンサーにとって、小型であることは大きな利点です。これは主に、正確な測定を達成するために、センサーが周囲の環境や測定対象物への介入によって生じる変化を最小限に抑えるべきだからです。

The 'OFSCN® Capillary Seamless Steel Tube Series FBG Sensor (FBG sensor)' produced by DCYS is an extremely small FBG sensor (FBG thermometer, FBG strain gauge, FBG tensile gauge, etc.) that can be used to measure various physical quantities such as temperature, stress, と strain in extreme environments.

図1

The typical 'OFSCN® Capillary Seamless Steel Tube Series FBG Sensor (FBG sensor)' consists of a stainless steel seamless tube and a fiber bragg grating (FBG) as the sensing element. Due to innovative patented technology and a minimalist structural design, our product differs significantly from traditionally packaged FBG sensors (see comparison in 図2).

図2

The 'OFSCN® Capillary Seamless Steel Tube Series FBG Sensor (FBG sensor)' is much smaller in size than existing traditional FBG sensors, with a standard diameter of only 0.9mm (in addition to 2mm, 3mm diameter products, と a minimum diameter of 0.6mm).

このサイズは、一般的に直径6mmの「部分的にステンレス鋼管にパッケージされた」FBGセンサーよりも小さく、さらに一般的に直径10mmのセラミック管にパッケージされたFBGセンサーよりも小さいです。

図3	図4

2. Application と construction advantages of small-sized 'OFSCN® Capillary Seamless Steel Tube Series FBG Sensor' (FBG probes)

The smaller size of the 'OFSCN® Capillary Seamless Steel Tube FBG Temperature Sensor' first increases its sensitivity. Increased sensitivity means more accurate temperature measurement と faster response. Consequently, the 'OFSCN® Capillary Seamless Steel Tube FBG Temperature Sensor' does not require thermal paste or various fillers inside (refer to references: 「FBG温度センサーの感度 - 分解能の観点」 「FBG温度センサーの感度 - 熱伝導の観点」 'Characteristics Analysis of OFSCN® Capillary Seamless Steel Tube FBG Temperature Sensors- High Sensitivity'.

The smaller size also greatly expands the application range of FBG sensors. Compared to その他 types of sensors, FBG sensors have the advantage of being small in size (previously, FBG sensors were often described with a diameter of 6mm). Now, with the 'OFSCN® Capillary Seamless Steel Tube FBG Sensor' having a diameter of only 0.9mm, many environments and objects that were previously limited by size can be tested using FBG sensors. After all, the smaller the grating sensor, the less it impacts the object being measured.

図5

The smaller size also brings great convenience to the transportation と engineering construction of FBG sensors. Traditional FBG sensors are transported in bundles, while the 'OFSCN® Capillary Seamless Steel Tube FBG Sensor' is transported as a bundle. The benefits brought by this during engineering construction are evident と will be analyzed in subsequent articles.

Our philosophy is: 'OFSCN®, make optical fiber stronger!'