Distributed Fiber Optic Sensing Brillouin Optical Time Domain Analyzer BOTDA and Distributed Vibration Listening Sensing Technology DAS-INNO

Due to the high-pressure operation of natural gas pipelines, the transmission medium is flammable, pampasabog, and toxic. Once an accident occurs, it will not only cause resource loss and environmental pollution, but also fire and explosion, resulting in huge economic losses and damaging the surrounding environment and personal safety. It is urgent to adopt high-tech means to timely and accurately measure changes in pipeline safety status, and it is particularly important to achieve real-time online monitoring of oil pipelines.

Ibinahagi ang fiber optic sensing technology is an emerging sensing technology that directly uses monitoring optical cables laid in the same trench as pipelines as sensors. It fully utilizes the continuous distribution of fiber optic space, nagsasama “paghawa” at “pandama”, and can achieve physical parameter information at any point along the fiber optic distribution. It has the advantages of rich measurement information, tumpak na pagpoposisyon, at intrinsic na kaligtasan. At saka, fiber optic sensing technology uses light waves as carriers and optical fibers as media. Kumpara sa tradisyonal na mga de-koryenteng sensor, fiber optic sensors have the advantages of high measurement accuracy, electromagnetic interference resistance, intrinsic na kaligtasan, compact and gentle design, and are suitable for remote transmission. They are particularly suitable for applications in fields such as power, petrolyo at petrochemical, transportasyon, mga tulay, at mga dam. By laying the detection optical cable along the pipeline in the same trench or in parallel, real-time temperature, pilitin, panginginig ng boses (tunog) information can be obtained at any point along the pipeline, enabling real-time monitoring of abnormal conditions such as pipeline leaks, oil theft, geological disasters, atbp. It has the advantages of long measurement distance, continuous distributed measurement, tumpak na pagpoposisyon, simpleng pag-install, safety and reliability, strong scalability, atbp. Hindi ito magdudulot ng anumang pinsala sa pipeline o makakaapekto sa normal nitong produksyon, lalo na angkop para sa mga online na aplikasyon ng pagsubaybay sa mga long-distance na natural gas pipelines.

Ang FJINO ay batay sa advanced distributed fiber optic sensing teknolohiya sa industriya, gaya ng Brillouin Optical Time Domain Analyzer (BOTDA) at Distributed Vibration Sensing Technology (ANG). Ang detection optical cable ay inilalagay sa parehong trench o parallel sa kahabaan ng gas pipeline upang subaybayan ang temperatura, pilitin, at panginginig ng boses (tunog) pamamahagi sa paligid ng pipeline sa real time. Kapag ang mga abnormal na kondisyon ay nangyayari nang lokal sa pipeline ng gas, ang distributed fiber optic sensing monitoring system ay maaaring makuha ang mga abnormalidad na ito sa isang napapanahong paraan, ipakita ang mga ito sa distributed curve, at hanapin ang impormasyon ng lokasyon ng mga abnormal na punto, which facilitates timely maintenance and handling by pipeline maintenance personnel and avoids major accidents.

Mga katangian ng distributed fiber optic monitoring system:

1. Real time acquisition of temperature, pilitin, panginginig ng boses (tunog) distributed information along the pipeline route;

2. Real time monitoring of leakage, external damage prevention, settlement deformation, and pipeline cleaning tracking and monitoring events along the pipeline;

3. Clearly indicate the location information of abnormal points;

4. Provide early warning and event development trends for abnormal pipeline/pipeline surrounding environment.