What are the advantages of using optical fibers for temperature measurement
Temperature is a very important physical quantity in engineering technology and scientific research, therefore temperature measurement technology has been continuously studied and developed. Traditional temperature measurement often uses temperature sensors such as thermistors and optical pyrometers. Walau bagaimanapun, for certain special industrial environments (seperti mudah terbakar dan mudah meletup, voltan tinggi, arus tinggi, gangguan elektromagnet yang kuat, Dll.), temperature sensors based on electrical signals are usually greatly limited in terms of safety and signal stability. Itu, in order to achieve safe and effective temperature measurement in various situations, the development of new temperature measurement systems has become an inevitable trend. The advantages of optical fiber such as electrical insulation, geometric variability, and inherent large signal transmission bandwidth, as well as the development of grating sensors, have enabled optical fiber temperature sensors to break through the limitations of traditional temperature sensors and provide very effective means for temperature measurement in harsh environments such as strong electromagnetic interference. Pada masa yang sama, optical fiber temperature measurement systems can overcome the limitations of traditional point sensors and measure temperature field information distributed along the optical fiber.
Ciri-ciri Pengukuran suhu gentian optik yang diedarkan
After more than ten years of development, Serat optik yang diedarkan temperature measurement systems have been widely used in fields that require temperature measurement, penggera kebakaran, and energy conservation and emission reduction, such as power cable tunnels, comprehensive pipe galleries, coal industry, dan pusat data, due to their advantages of long measurement distance, ketepatan tinggi, tiada tompok buta ukuran, dan rintangan yang kuat terhadap gangguan elektromagnet. Based on Raman DTS (Sistem Pengukuran Suhu Gentian Teragih), temperature information is obtained by comparing the intensity of Stokes light and anti Stokes light.
The working principle of distributed fiber optic temperature measurement
The distributed fiber optic temperature measurement device is made using the spontaneous Raman scattering effect. Its anti Stokes signal is temperature sensitive, while the Stokes signal is temperature insensitive. The temperature values at each point along the fiber optic can be calculated using its ratio of light intensity, and precise positioning can be achieved using its Rayleigh scattering technology. Itu, its spatial resolution and temperature measurement accuracy are important characterization parameters.
Dalam beberapa tahun kebelakangan ini, distributed fiber temperature sensing (DTS) systems based on Raman scattering have been extensively studied and developed. Due to its resistance to electromagnetic interference and long measurement distance, distributed fiber optic temperature measurement is widely used in many industrial fields, such as fire warning, wire safety monitoring, Dan leakage detection of oil pipelines.
Itu Sistem pengukuran suhu gentian optik yang diedarkan can monitor the temperature of the measured object in real time. Ia bukan sahaja dapat mengesan kejadian kebakaran dalam masa nyata, but also provide accurate fire locations, buying time for immediate firefighting and minimizing accident losses. FJINNO’s distributed fiber optic temperature measurement system eliminates the safety hazards of traditional temperature monitoring systems and greatly improves the availability of monitoring systems for temperature monitoring of temperature objects. Itu Sistem pengukuran suhu gentian optik yang diedarkan digunakan secara meluas oleh banyak syarikat pembinaan dan kereta bawah tanah yang besar, sangat mengurangkan berlakunya pelbagai kemalangan kebakaran. Selain itu, sistem pengukuran suhu gentian optik teragih juga mempunyai prospek aplikasi yang penting dan meluas dalam bidang seperti pembangunan dan aplikasi geoterma, pengekstrakan minyak dan gas, dan pengeluaran kimia.
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