Sensores de temperatura de fibra óptica INNO ,sistemas de monitoramento de temperatura.
A transmissão por dutos tem sido amplamente aplicada e promovida na sociedade atual, sendo a sua capacidade de transportar recursos de petróleo e gás o mais significativo. Mas com o rápido desenvolvimento da economia, uma série de desastres como incêndios, explosões, e a poluição causada por vazamentos em oleodutos estão se tornando cada vez mais graves. Esses desastres são causados principalmente por perfurações irracionais e roubo de petróleo, envelhecimento do gasoduto, e desastres naturais graves.
O método distribuído de monitoramento de fibra óptica é um método de detecção de vazamento de pipeline baseado em software. Está dividido em dois métodos de detecção diferentes: temperatura e vibração. O uso do método de detecção de temperatura se deve principalmente ao uso de distribuição sensores de temperatura de fibra óptica para melhorar a detecção e medição of temperature changes around the pipeline in case of leakage in the heated oil pipeline, in order to locate the specific location of the pipeline leakage. Vibration detection mainly relies on optical fibers to extract leakage signals along the pipeline, actively analyze and process the signals emitted, and report the specific situation of leakage in real time.
ETED (Fiber Temperature Sensing System) is mainly based on the principle of Optical Time Domain Reflectometry (OTDR), using a high-power laser transmitter to send laser pulses to the detection optical cable of the transmission connection, while collecting and analyzing Raman scattering light in the backscattered light, in order to specifically solve the distribution requirements of temperature detection. It mainly accurately locates the leakage point based on the temperature changes along the pipeline, and solves the problems of oil and gas mixed transportation and gas pipeline leakage monitoring.
The working principle of DVS (Fiber Optic Vibration Sensing System) for measuring vibration signals is based on the principle of optical time domain reflection. When any part of the fiber is disturbed, its refractive index will also change with the influence of the elastic optical effect, thereby changing the phase of the light wave at the disturbed part. Além disso, due to the interference, the change in the phase of the light wave will also affect the intensity of the Rayleigh scattered light. By analyzing and processing the backward Rayleigh scattered light signal carrying disturbance information, accurate positioning of disturbances and intrusions can be achieved.
The pipeline laying along the route is often damaged by third parties. Atualmente, the most reliable solution for building a distributed sensor optical cable vibration monitoring and warning system is to use optical cables. The use of warning system devices can record and monitor soil vibration situations that occur during real-time transmission of optical cables. The intelligent learning function can actively judge the danger signals sent out and issue timely warnings, notifying monitoring personnel to take appropriate measures in the first time to prevent the occurrence of danger.
Tecnologia de detecção de fibra óptica distribuída, as one of the most promising technologies in fiber optic sensing, has the advantage of being able to achieve large-scale and ultra long distance detection, Além disso, computer technology has solved the problem of long measurement time and inability to detect in real-time in distributed fiber optic sensing, greatly improving the performance of distributed fiber optic sensing. It can be applied to situations that require real-time monitoring and a large number of sensors.
Vantagens de Distributed Fiber Optic Monitoring System
Long distance detection: multi-channel long-distance detection with long detection range;
Multi point simultaneous positioning: can restore the invasion trajectory;
Positioning accuracy ± 1 metro: cooperate with monitoring to achieve fixed-point capture;
One click troubleshooting of fiber breakage points: The system software automatically identifies the length of the sensing optical cable with one click, making it easy to query fiber breakage points and easy to install and maintain;
Can set whitelist of points: Within the range of fiber optic cable installation, some areas can be set as whitelist points to flexibly set non detection areas.
Sensor de temperatura de fibra óptica, Sistema de monitoramento inteligente, Fabricante distribuído de fibra óptica na China
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