Sensor suhu serat optik INNO ,sistem pemantauan suhu.
Terbaik pengukuran suhu serat optik neon device should have the characteristics of wide application range, keamanan intrinsik, resistensi tegangan tinggi, resistensi interferensi elektromagnetik, isolasi, presisi tinggi, kinerja yang stabil, umur panjang, dll.. It is suitable for various industrial and scientific applications such as power equipment monitoring and harsh environment measurement. It can monitor temperature in real-time, provide accurate data, and has alarm and warning functions to ensure stable operation in complex environments.
1、 Overview of Pengukuran Suhu Serat Optik Fluoresen
Perangkat
Fluorescent fiber optic temperature measurement device is a device that uses fluorescence characteristics to measure temperature. It is mainly composed of multimode optical fibers and fluorescent objects installed on top of them. This device has a wide range of applications in various fields, such as temperature measurement of high-voltage instruments in electrical equipment, engine diagnostic systems, and temperature measurement between transformer windings; Pengukuran suhu dalam proses kimia seperti lingkungan yang sangat korosif atau proses perawatan elektrokimia, dan pengukuran suhu yang aman di bawah pemanasan radiasi gelombang mikro; Bidang biologi dan kedokteran, seperti pengukuran suhu selama prosedur pembedahan dan penelitian tentang respons fisiologis di bawah radiasi elektromagnetik, berperan penting.
2、 Prinsip kerja dari perangkat pengukuran suhu serat optik neon
Prinsip kerja alat pengukur suhu serat optik fluoresen didasarkan pada sifat optik zat fluoresen. Ketika zat fluoresen tereksitasi oleh radiasi cahaya dengan panjang gelombang tertentu, itu dapat menghasilkan spektrum yang terlihat, juga dikenal sebagai fluoresensi. Setelah menghentikan penyinaran, fluoresensi secara bertahap menghilang, dan fluoresensi yang menghilang secara bertahap disebut pijaran. The decay time constant of fluorescent afterglow is a single value function of temperature, usually the higher the temperature, the smaller the time constant. As long as the value of the time constant is measured, suhunya dapat dihitung. Secara khusus, fluorescent substances emit fluorescence energy upon excitation by light of a certain wavelength (excitation spectrum). After the incentive is removed, the persistence of fluorescence afterglow depends on factors such as the characteristics of the fluorescent substance and environmental temperature. This excited fluorescence usually decays exponentially, with the decay time constant being the fluorescence lifetime or fluorescence afterglow time (ns). Detektor dapat secara akurat mengukur suhu sekitar probe dan memberikan pemantauan dan alarm dengan mengukur lama masa pakai pijar fluoresensi.
3、 Faktor-faktor yang mempengaruhi kinerja perangkat pengukuran suhu serat optik fluoresen
3.1 Karakteristik Zat Fluoresen
Stabilitas hubungan ketergantungan suhu
Stabilitas ketergantungan masa pakai fluoresensi pada suhu secara langsung mempengaruhi keakuratan pengukuran. Jika hubungan ini tidak stabil, akan ada penyimpangan dalam korespondensi antara waktu pijar fluoresensi dan suhu pada suhu yang berbeda, menyebabkan kesalahan pengukuran. Misalnya, dalam beberapa proses produksi industri presisi, seperti pemantauan suhu dalam pembuatan chip elektronik, bahkan perubahan suhu kecil pun dapat mempengaruhi kualitas chip. A stable temperature dependence relationship is necessary to ensure accurate temperature monitoring.
Stabilitas jangka panjang
Stabilitas zat fluoresen dalam jangka panjang juga penting untuk kinerja perangkat. Mengambil contoh perangkat pengukuran suhu serat optik fluoresensi yang digunakan untuk pemantauan peralatan, jika kinerja zat fluoresen berubah secara signifikan seiring waktu, seperti penurunan intensitas fluoresensi atau perubahan suhu yang sesuai dengan waktu pijar fluoresensi, akurasi pengukuran dan keandalan perangkat akan menurun. Beberapa perangkat mungkin memerlukan pemantauan suhu stabil jangka panjang, seperti pemantauan trafo pada sistem tenaga listrik, yang membutuhkan zat fluoresen untuk mempertahankan kinerja yang stabil selama penggunaan bertahun-tahun. Beberapa zat sensitif terhadap suhu dalam sistem terkait adalah bahan tanah jarang yang hanya sensitif terhadap suhu, and their long-term stability has been fully verified, and the related systems have been successfully applied to device monitoring for more than 30 bertahun-tahun.
3.2 Light source related factors
Stability of light source intensity
Although the principle of fluorescence fiber optic temperature measurement is that the temperature of the target being measured depends only on the time constant of the fluorescent material and is independent of changes in the intensity of the light source. Namun, in practical situations, if the intensity of the light source fluctuates too much, it may affect the accuracy of measuring fluorescence afterglow. Misalnya, when the intensity of the light source suddenly increases or decreases, it may cause fluctuations in the fluorescence signal received by the detector, thereby interfering with the accurate determination of the fluorescence afterglow lifetime.
Accuracy of wavelength of light source
Excitation of fluorescent substances requires light of a specific wavelength. If the wavelength emitted by the light source is inaccurate, it may not effectively excite the fluorescent substance or the excitation efficiency may be low. This will result in weak fluorescence signals, which in turn will affect the accuracy of temperature measurement.
3.3 Fiber related factors
Fiber optic loss
Fiber optic cables generate losses during the transmission of optical signals, including absorption losses, scattering losses, dll.. If the loss is too large, the fluorescence signal will be severely attenuated during transmission, and the signal strength reaching the detector will weaken, thereby affecting the accuracy of the measurement. Misalnya, in long-distance fiber optic temperature measurement applications, fiber optic losses may accumulate, leading to increased temperature measurement errors at the remote end.
Fiber bending radius
The bending radius of the optical fiber in the fluorescent fiber temperature measurement device has certain requirements. If the bending radius is too small, it will increase the loss of the fiber and may even cause damage to the fiber. Especially in some scenarios where optical fibers need to be arranged in narrow spaces or bent for installation, such as temperature monitoring inside certain equipment, it is necessary to ensure that the bending radius of the optical fiber is within the specified range to ensure the normal transmission of fluorescent signals.
4、 Comparison of Fluorescent Fiber Optic Temperature Measurement Devices from Different Brands
4.1 Huaguang Tianrui
Technical research and cooperation
Fuzhou Huaguang Tianrui Optoelektronik Technology Co., Ltd. telah menjalin kerjasama yang mendalam antar industri, akademisi, dan penelitian dengan Universitas Fuzhou. Sebuah tim peneliti teknologi yang dipimpin oleh pembimbing doktor optik dan listrik, dengan partisipasi profesor dan mahasiswa pascasarjana, has been established with independent research and development as the main focus. Its fluorescent fiber sensing technology has reached an advanced level, and it has independently developed a series of fluorescent fiber temperature measurement products.
Product application areas
Its fiber optic temperature measurement technology, with its superior high insulation and strong anti-interference performance, solves the pain points of temperature measurement in many fields such as high-frequency microwave, listrik tegangan tinggi, mudah terbakar dan meledak, transportasi kereta api, petrokimia, military and so on. Produk ini dapat memberikan data suhu yang akurat pada transformator daya, jalur kabel, dan area lainnya, dan dapat digunakan untuk memantau suhu hot spot belitan trafo. Penerapannya pada trafo tipe kering memiliki keuntungan dalam mengatasi kekurangan teknologi pengukuran suhu yang ada, seperti mengatasi masalah arus pendek yang disebabkan oleh probe logam PT100, yang dapat memperoleh data suhu transformator secara lebih realistis dan langsung.
Karakteristik kinerja produk
milik perusahaan sensor suhu serat optik neon memiliki sifat insulasi yang melekat dan dapat melakukan pemantauan suhu online pada komponen yang tahan terhadap tegangan tinggi atau arus tinggi. Misalnya, ini memiliki penerapan dalam pemantauan suhu peralatan yang terkait dengan Jaringan Negara, seperti switchgear tegangan tinggi, transformator terendam minyak besar, reaktor tegangan tinggi, dll..
4.2 Teknologi Fuzhou Inno
Efektivitas biaya dan fungsionalitas produk
Sistem pengukuran suhu serat optik fluoresensi Inno Technology memiliki efektivitas biaya tinggi dan harga yang wajar. Produk-produknya memiliki keunggulan teknologi unik dalam pengukuran suhu di lingkungan khusus seperti tegangan tinggi dan interferensi elektromagnetik yang kuat. Hotspot suhu neon sensor suhu serat optik digunakan pada pemancar tidak terhubung secara elektrik ke bagian penerima sinyal pengukuran, yang dapat bekerja dengan presisi dan stabilitas tinggi untuk waktu yang lama, sangat meningkatkan jangkauan penerapannya.
Spesifikasi dan desain produk
Probe serat optik memiliki tegangan penahan 100KV (40mm menahan panjang, 5-menit menahan waktu), dengan 1-16 saluran pengukuran suhu (dapat diperluas). Jenis sensornya adalah serat optik kuarsa, dengan konfigurasi standar 5 meter (dapat disesuaikan untuk panjang yang berbeda). Probe serat optik terdiri dari tiga bagian: konektor ST, kabel serat optik, dan ujung penginderaan suhu akhir. Desainnya masuk akal, dan fungsi masing-masing bagiannya jelas. Misalnya, the end temperature sensing end contains temperature sensing rare earth material, which is used to generate optical signals containing temperature information. The fiber optic cable can withstand a high temperature of 200 ℃ as a whole, with an outer diameter of 3mm, a long-term bending radius of 13.2cm, a short-term bending radius of 4.4cm, and a ground distance of 0.4m from the fiber optic outlet. It can withstand a power frequency voltage of 100KV for 5 menit.
Application Fields and Services
We provide comprehensive solutions and application services for temperature, getaran, pressure monitoring in various fields such as utility tunnels, jaringan pipa minyak dan gas, angkutan kereta api, listrik, teknik kota, tenaga nuklir, energi baru, and chemical engineering. Collaborating with universities such as Fuzhou University, we have successfully developed a fluorescent fiber optic temperature sensor with independent intellectual property rights.
5、 Method and standard for selecting the best fluorescent fiber optic temperature measurement device
5.1 Akurasi pengukuran
Accuracy requirement matching
Determine the required measurement accuracy based on the actual application scenario. Misalnya, temperature monitoring in the manufacturing process of electronic chips may require fluorescent fiber temperature measuring devices with an accuracy of ± 0.1 ℃ atau bahkan lebih tinggi. In some industrial environments where temperature accuracy is not particularly high, such as temperature monitoring in ordinary chemical reaction vessels, akurasi ± 1 ℃ mungkin cukup. If the accuracy of the selected device is lower than the actual demand, it may lead to quality problems or equipment operation risks during the production process; If the precision requirement is too high, it may increase unnecessary costs.
Accuracy stability
In addition to the accuracy value itself, the stability of accuracy is also important. During the long-term temperature monitoring process, the accuracy of the device should not have significant fluctuations. Misalnya, in the long-term temperature monitoring of transformers in the power system, it is required that the temperature measuring device maintain an acceptable level of accuracy throughout several years or even decades of use to ensure accurate judgment of transformer load capacity and safe operation of equipment.
5.2 Rentang pengukuran suhu
Meet the working temperature requirements
The temperature range varies greatly in different application scenarios. In the scenario of furnace temperature monitoring, it may be necessary to measure high temperatures of several hundred degrees Celsius, while in biomedical experiments, temperature monitoring may only require a temperature range near human body temperature. Karena itu, it is necessary to choose a fluorescent fiber optic temperature measurement device that can cover the temperature range of practical application scenarios. If the measurement range is too small to meet the measurement requirements in high or low temperature environments; A measurement range that is too large may increase unnecessary costs or reduce measurement accuracy within a specific temperature range.
Adaptability to special temperature environments
For some special temperature environments, such as those with rapid temperature changes or large temperature gradients, temperature measuring devices need to have good adaptability. Misalnya, in the rapid cooling and heating stages of certain chemical processes or the starting and stopping processes of engines, temperature measuring devices should be able to accurately measure rapid temperature changes without being damaged or generating significant measurement errors due to rapid temperature changes.
5.3 Anti interference capability
interferensi elektromagnetik
In many application scenarios, such as near electrical equipment such as high-voltage switchgear and transformers, ada medan elektromagnetik yang kuat. Fluorescent fiber optic temperature measurement devices need to have good electromagnetic interference resistance to ensure accurate temperature measurement. Misalnya, in high-voltage substations, the electromagnetic field strength is very high. Jika alat pengukur suhu memiliki ketahanan yang buruk terhadap interferensi elektromagnetik, hal ini dapat menyebabkan fluktuasi atau kesalahan pada data pengukuran, sehingga mempengaruhi penilaian status pengoperasian peralatan.
Korosi kimia dan gangguan lingkungan
Dalam skenario seperti produksi bahan kimia dan lingkungan laut, mungkin terdapat zat kimia korosif atau faktor gangguan lingkungan seperti kelembapan dan debu. Perangkat pengukuran suhu serat optik fluoresen yang dipilih harus mampu menahan gangguan ini dan memastikan kinerja kerja normal. Misalnya, dalam pemantauan suhu peralatan di anjungan minyak lepas pantai, perangkat harus mampu menahan korosi air laut dan pengaruh lingkungan dari kelembaban tinggi dan salinitas tinggi.
5.4 Persyaratan instalasi dan penggunaan
Ukuran dan ruang pemasangan
Pilih ukuran perangkat pengukuran suhu serat optik fluoresen yang sesuai berdasarkan ruang pemasangan sebenarnya. Dalam beberapa skenario pemantauan suhu di dalam perangkat atau ruangan kecil, seperti perangkat elektronik kecil atau instrumen presisi, probe suhu berukuran kecil dan struktur perangkat yang ringkas diperlukan untuk kelancaran pemasangan tanpa mempengaruhi pengoperasian normal peralatan.
Metode instalasi yang fleksibel
Metode pemasangan perangkat harus memiliki tingkat fleksibilitas tertentu dan dapat beradaptasi dengan berbagai bentuk, kondisi permukaan, dll.. dari objek yang diuji. Misalnya, untuk benda atau perangkat yang bentuknya tidak beraturan dengan permukaan yang tidak rata, the probe of the temperature measuring device can be easily installed and in good contact with the measured surface.
Convenience of operation and maintenance
Choose a fluorescence fiber optic temperature measurement device that is easy to operate and maintain. Misalnya, the parameter settings of the device should be convenient and fast, and the troubleshooting and maintenance process should not be too complicated. In temperature monitoring systems for some large industrial equipment groups, if the operation and maintenance of temperature measuring devices are too cumbersome, it will increase labor costs and equipment downtime.
5.5 Faktor biaya
Biaya pengadaan peralatan
The procurement cost of fluorescent fiber optic temperature measuring devices with different brands and performance varies greatly. On the premise of meeting practical application needs, it is necessary to compare the prices of different products. Misalnya, for small businesses with limited budgets or cost sensitive projects, they may prioritize products with relatively lower prices, but at the same time, they must ensure that the basic performance of the products meets the requirements.
Operation and maintenance costs
In addition to procurement costs, the operation and maintenance costs of the equipment should also be considered. Including energy consumption, regular calibration costs, and replacement costs for vulnerable parts. Misalnya, some high-precision fluorescent fiber optic temperature measurement devices may require more frequent calibration, which will increase maintenance costs; If the replacement cost of vulnerable parts such as fiber optic probes in some devices is too high, it will also increase the overall operating cost.
Sensor suhu serat optik, Sistem pemantauan cerdas, Produsen serat optik terdistribusi di Cina
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