装甲シングルモード温度測定ファイバーとは

What does armored single-mode temperature measuring optical fiber mean

To enhance the performance of optical fibers, a protective “armor” is added between the coating layer and the core cladding layer to form armored optical fibers. While not affecting the various superior optical properties of the fiber itself, the tensile and compressive strength of the fiber is enhanced, solving problems such as impact resistance, lateral pressure resistance, and rat bite resistance. People have started to coat the fiber bundle with another layer. Fiber optic distributed temperature measurement is widely used in temperature monitoring and fire alarm of facilities such as power, 石油化学製品, 交通機関, 建物, そして水の保全. 高圧送電ケーブルの長さが非常に長い, ケーブル上のどの部分でも過熱すると、多大な経済的損失が発生する可能性があります。.

The composition of a 分散型光ファイバー 温度測定システム

The distributed fiber optic temperature measurement system adopts armored fiber optic to prevent various external forces from damaging. The main temperature measurement components include temperature measurement host, スイッチ, server, temperature measurement optical cable, and fire controller. The temperature measurement host, スイッチ, and server are connected through a communication backbone network. The fire controller is equipped with a relay unit, and the fire controller is connected to the temperature measurement host. The temperature measurement optical cable is connected to the temperature measurement host.

Distributed fiber optic temperature measurement system for mining

Various contacts, バスバー, ケーブルジョイント, and electrical equipment connectors inside mining equipment are prone to poor contact and abnormal plug-in eccentricity. This will lead to excessive contact resistance, causing severe heating at this point under high current. The result is abnormal joint temperature, exacerbating contact surface oxidation, further increasing contact resistance, forming a vicious cycle. After a certain stage of development, it will cause serious faults and damage the safety and reliability of power supply. This is the main form of fault in high-voltage switchgear. したがって, real-time temperature monitoring of the contact points, timely detection of hot spots inside the switchgear, and early prediction and alarm of faults are extremely important for ensuring the safety of life and property.

The principle of 分散型光ファイバー温度測定システム

One of the temperature measurement techniques, which is based on Raman scattering and optical time-domain reflection technology, can achieve the measurement of temperature and distance. 具体的には, Raman reflection is based on the temperature effect of backward Raman scattering spectra generated during the propagation of light in optical fibers. 入射光量子がファイバー内の材料分子と衝突するとき, 弾性衝突と非弾性衝突が発生する. 弾性衝突が起こった場合, 光量子と物質分子の間にエネルギー交換は存在しない, そして光量子の周波数は決して変化しません, その結果、入射光と同じ波長を維持するレイリー散乱光が得られます。; 非弾性衝突では, エネルギー交換が起こる, and photons can release or absorb phonons, resulting in the production of a longer wavelength Stokes silk light and a shorter wavelength Stokes light. アンチストークス光は温度に敏感であるため, システムはストークス光チャネルを基準チャネルとして使用し、反ストークス光チャネルを信号チャネルとして使用します。. The ratio of the two can eliminate non temperature factors such as light source signal shifting and fiber bending, 温度情報の収集を実現する. The principle of fiber optic temperature measurement is based on the backward Raman scattering effect.

光ファイバー温度センサー, インテリジェント監視システム, 中国の分散型光ファイバーメーカー