Distributed Fiber Optic Temperature Measurement System DTS OTDR Distributed Fiber Optic Temperature Sensor-INNO

Dalam beberapa tahun terakhir, distributed fiber optic temperature measurement systems have developed rapidly. Benar distributed sensors that measure the temperature field around temperature sensing fibers over long distances in real-time. The system is based on Raman scattering effect and OTDR technology, and plays an extremely important role in daily life, avoiding many accidents.

Sistem pengukuran suhu serat optik terdistribusi (sistem DTS) is a temperature measurement system developed based on OTDR and Raman scattering principles. Its temperature sensor is optical fiber (usually made into kabel optik). DTS utilizes the Raman effect of optical fibers, which modulates the backward Raman scattering light transmitted in the fiber by the temperature field at the fiber laying position (ruang angkasa). Setelah konversi fotolistrik dan pemrosesan sinyal, real-time temperature information of the temperature field can be retrieved. The composition of DTS system generally includes high-power pulse laser light source, fiber optic wavelength division multiplexing coupler, penginderaan kabel optik, fotodetektor, signal amplification module, data acquisition module, and system host (PC or industrial control computer). Due to the distributed nature of DTS, which means that optical cables are continuously laid on the site that needs to be monitored, and the distance is relatively long (usually a few kilometers), DTS has significant advantages compared to other temperature measurement systems. The system is currently widely used in various fields that require pemantauan kebakaran, seperti terowongan, pembangkit listrik, pabrik baja, dan tambang.

Dibandingkan dengan sensor suhu tradisional, fiber optic temperature sensors have many advantages, misalnya: light waves are not affected by electromagnetic interference; Fiber optic mempunyai frekuensi operasi yang luas dan rentang dinamis yang besar, menjadikannya saluran transmisi dengan kerugian rendah; The optical fiber itself is not charged, has a small volume, is lightweight, mudah ditekuk, dan memiliki ketahanan radiasi yang baik. Jadi, fiber optic temperature sensors are particularly suitable for use in harsh environments such as flammable, Peledak, ruang yang sangat terbatas, dan interferensi elektromagnetik yang kuat, solving temperature measurement problems that traditional methods cannot solve.

Penginderaan suhu serat optik terdistribusi Teknologi ini terutama memanfaatkan korelasi antara intensitas sinyal cahaya hamburan Raman dalam efek nonlinier optik dan suhu. Dengan mendeteksi dan menganalisis intensitas sinyal cahaya hamburan Raman yang dihasilkan oleh eksitasi pada berbagai posisi serat, pengukuran suhu pada berbagai posisi serat tercapai. Di dalam suhu serat optik terdistribusi teknologi penginderaan, serat optik adalah sensor dan media transmisi informasi. Teknologi ini memiliki karakteristik struktur sensor yang fleksibel, distribusi yang berkelanjutan, jarak pemantauan yang jauh, dan suhu kerja yang tinggi. Jadi, ia memiliki prospek penerapan yang luas di berbagai bidang seperti proteksi kebakaran dan peringatan dini, survei sumur minyak, dll.