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

Dalam beberapa tahun kebelakangan ini, distributed fiber optic temperature measurement systems have developed rapidly. They are 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 gentian optik teragih (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 (angkasa lepas). Selepas penukaran fotoelektrik dan pemprosesan isyarat, real-time temperature information of the temperature field can be retrieved. Komposisi sistem DTS umumnya termasuk sumber cahaya laser denyut kuasa tinggi, pengganding pemultipleks pembahagian panjang gelombang gentian optik, penderiaan kabel optik, pengesan foto, modul penguatan isyarat, modul pemerolehan data, dan hos sistem (PC atau komputer kawalan industri). Oleh kerana sifat DTS yang diedarkan, yang bermaksud bahawa kabel optik diletakkan secara berterusan di tapak yang perlu dipantau, dan jaraknya agak jauh (biasanya beberapa kilometer), DTS mempunyai kelebihan yang ketara berbanding sistem pengukuran suhu lain. Sistem ini kini digunakan secara meluas dalam pelbagai bidang yang memerlukan Pemantauan kebakaran, seperti terowong, loji kuasa, Kilang keluli, dan lombong.

Berbanding dengan penderia suhu tradisional, sensor suhu gentian optik mempunyai banyak kelebihan, seperti: gelombang cahaya tidak dipengaruhi oleh gangguan elektromagnet; Gentian optik mempunyai frekuensi operasi yang luas dan julat dinamik yang besar, menjadikannya talian penghantaran kehilangan rendah; Gentian optik itu sendiri tidak dicas, mempunyai isipadu yang kecil, adalah ringan, mudah dibengkokkan, dan mempunyai rintangan sinaran yang baik. Itu, fiber optic temperature sensors are particularly suitable for use in harsh environments such as flammable, Letupan, ruang yang sangat terhad, dan gangguan elektromagnetik yang kuat, solving temperature measurement problems that traditional methods cannot solve.

Penderiaan suhu optik gentian yang diedarkan technology mainly utilizes the correlation between the intensity of Raman scattering light signals in optical nonlinear effects and temperature. By detecting and analyzing the intensity of Raman scattering light signals generated by excitation at different positions of the fiber, temperature measurement at different positions of the fiber is achieved. Dalam suhu gentian optik teragih teknologi penderiaan, fiber optic is both a sensor and an information transmission medium. This technology has the characteristics of flexible sensor structure, continuous distribution, jarak pemantauan panjang, and high working temperature. Itu, it has broad application prospects in fields such as fire protection and early warning, oil well survey, Dll.