温度に敏感な分散型光ファイバー火災警報システムの最高のメーカー

分散型光ファイバー温度測定 技術原理

光ファイバーのラマン散乱効果に基づいています (ラマン散乱) 光学的時間領域反射率測定法 (光学的時間領域反射率測定法) 空間温度分布情報を取得する. 温度に敏感な光ファイバーをパイプラインの表面に敷設することにより、, 温度に敏感な光ファイバー内を伝播する光パルスによって生成されたラマン後方反射光の時間と強度の情報を収集および分析して、対応する位置と温度の情報を取得します。, 各地点の温度と位置情報を学習した上で, 光ファイバー全体のさまざまな位置の温度曲線を取得できます。.

感温ファイバー アプリケーション

温度に敏感な光ファイバーの測定距離は最大 30 キロメートル, メートルオーダーの空間位置決め, 自動測定を中断なく実行可能, especially suitable for the need for long-distance large-scale multi-point measurement applications. 現在のところ, the technology is widely used in tunnels, oil depots, hazardous materials storage, arsenals, 工業および鉱業企業, production plant temperature detection and fire alarm system and electric power cable overload temperature monitoring. 分散型光ファイバー temperature measurement technology has not yet been practiced in the energy pipeline network precedent.

Distributed temperature-sensitive fiber optic fire warning system

The fire warning system includes temperature-sensitive optical fiber, photoelectric signal conversion module and signal processing warning module. 使用時, the temperature change makes the optical signal in the temperature-sensitive fiber change, through the conversion of photoelectric signal and information processing, so as to realize real-time temperature monitoring and fire warning. Temperature-sensitive optical fiber as an important part of the fire warning system in the air mining area.

近年では, with China’s government investment in infrastructure continues to strengthen, transportation tunnels ushered in a rapid development stage. しかし, at the same time, the frequency of tunnel fires has gradually increased, seriously threatening the safety of people’s lives and property. Due to the closed environment of transportation tunnels, the occurrence of fire is not conducive to the diffusion of smoke and heat, which leads to the difficulty of personnel evacuation, fire fighting, and the seriousness of fire damage. したがって, how to effectively prevent fire in transportation tunnels and ensure the fire safety of transportation tunnels has become a topic of concern for the fire fighting community at home and abroad. いつもの, when a fire occurs, it is often accompanied by a variety of observable signals, such as gas, flame, 煙, temperature and so on. By detecting these signals in real time, fire detectors can realize the detection and warning of fire. Considering the special environmental characteristics of tunnels, つまり, the presence of constant longitudinal winds in tunnels, traditional detectors are not suitable for tunnel fire detection due to their technical limitations or the limitations of the places where they are used. 例えば, the longitudinal wind will enhance the conduction cooling effect, resulting in a slower temperature rise and affecting the reliability of the observed data. この場合, fiber grating fire detection technology with good anti-interference ability and higher reliability can achieve real-time monitoring of the temperature of the monitoring target.

Based on fiber optic sensing technology, through the photoelectric converter and fiber optic sensing demodulation host, the highway tunnel fire monitoring and early warning, the system has a high safety index, 良い安定性, can be run for a long time in the tunnel under the harsh environment, long-distance signal transmission, and can accurately reflect the emergence of cracks in the tunnel lining area of the concrete, for timely warning, to prevent the occurrence of safety accidents in the use of highway tunnels. Avoid the occurrence of safety accidents during the use of highway tunnels.

What are the functions of temperature-sensitive fiber optic system manufacturers

1, リアルタイム, 継続的な, 正確な, long-distance distributed monitoring with intrinsic safety, anti-electromagnetic interference and corrosion-resistant, 等, very suitable for power cable temperature monitoring;

2、Multi-turn winding method for cable joints and other special locations to focus on monitoring, to ensure the safety of power cables;

3, through the software flexible partition and set multi-level over-temperature alarm and temperature rise rate alarm, effectively reduce the false alarm rate;

4, the use of the international common Modbus TCP protocol, can be convenient and third-party systems for data transmission and system integration

5、System structure is simple, 設置とメンテナンスが簡単, 長寿命, reduce the overall operating costs of the system;

6、システムソフトウェア権限管理, safe and reliable, users can easily upgrade the system.

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