INNO光ファイバー温度センサー ,温度監視システム.
Underground pipelines are widely present in urban environments, such as water conservancy pipelines, 石油・ガスパイプライン, 熱パイプライン, 等。, and are a key part for the normal operation of the entire city. Especially with the rapid development of the economy and society, pipeline safety monitoring is increasingly valued by construction personnel and pipeline maintenance personnel in urban construction. Pipeline safety is related to the safety of people’s livelihoods and public assets, and more and more pipeline users are realizing its importance. Once a safety accident occurs in a pipeline, it can cause huge property damage and even loss of life. For the safety protection requirements of buried pipelines, traditional detection methods often rely on regular personnel inspections, which inevitably leads to untimely safety monitoring and even neglect of hazardous vibration sources. 第二に, in most scenarios, multiple pipelines intersect and multiple pipeline extension directions need to be detected simultaneously. さらに, traditional detection methods use artificial intelligence to identify vibration source patterns, but in practical application scenarios, vibration source patterns are much more common than pre fabricated items. さらに, in combination with reality, end users only need to monitor and predict the degree of damage caused by vibration sources to pipelines to make corresponding decisions. A multi-channel long-distance monitoring method for pipeline vibration warning is urgently needed to address the above issues.
分散型光ファイバーセンサー have many advantages, such as low loss, 小さいサイズ, 軽量, 高感度, 強い耐食性, 電磁干渉に対する耐性, no need for power supply, そして低コスト. They make up for the shortcomings of traditional electrical sensors in monitoring range and system reliability, and have developed rapidly in just a few decades. People have successfully achieved the measurement of changes in temperature, 集中, 圧力, 振動, 排水量, and refractive index using various fiber optic sensors. So far, various types of fiber optic sensors have been widely used in fields such as perimeter security, 航宇, パイプラインの監視, 電力工学, and biomedical research. その中で, the most practical value is undoubtedly the distributed fiber optic sensing system.
ザ distributed vibration sensing system uses a narrow linewidth laser as the system light source, and utilizes the coherent fading effect between backscattered Rayleigh scattering signals (RBS) to achieve distributed measurement of disturbance signals. When an external disturbance event acts on the optical fiber, the refractive index of the fiber core and the length of the fiber at the disturbance location will change, causing amplitude and phase changes in the RBS at that location. By analyzing the Rayleigh scattering curves before and after the occurrence of disturbance events, it is possible to detect dynamic disturbance events. This technology has high sensitivity, fast measurement response speed, and can achieve long-distance fully distributed dynamic monitoring without blind spots. Distributed fiber optic vibration monitoring systems have been widely used in fields such as tunnel gallery security positioning, power system cable monitoring, online monitoring of information pipelines, high-speed railway security systems, long-distance pipeline safety monitoring, and perimeter security of key facilities.
包括的な 石油およびガスパイプラインの監視システム パイプライン内に光ケーブルが装備されています, 光ファイバー監視ホストに接続されているもの. 光ケーブルは、石油およびガスのパイプラインの振動信号をリアルタイムで感知し、光ファイバー監視ホストに送信して、さまざまな位置での石油およびガスのパイプラインの漏洩状態を検出します。. その中で, 振動信号は主に外部振動を反映し、さらには盗難や損傷を反映する可能性があります。.
また、光ケーブルは石油およびガスのパイプラインの音響信号をリアルタイムで感知し、光ファイバー監視ホストに送信して、さまざまな位置での石油およびガスのパイプラインの漏洩状態を検出します。. その中で, 音響信号は主に内部漏洩の状況を反映している可能性があります. Set up a pressurization device to close the input and output ends on both sides of the oil and gas pipeline and actively pressurize them. The fiber optic monitoring host uses optical cables to perform high-precision acoustic monitoring and analysis on the pressurized oil and gas pipeline, finely detecting the damage status of the pipeline. By sealing and applying pressure, interference from other factors can be eliminated, allowing for more accurate detection of leaks.
光ファイバー温度センサ, 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
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