Sensor suhu serat optik INNO ,sistem pemantauan suhu.
Prinsip dari Termometer Serat Optik Fluoresen
Termometer serat optik fluoresen adalah alat pengukur suhu berdasarkan fenomena fotoluminesensi bahan fluoresen. Dibandingkan dengan metode pengukuran termokopel tradisional, ini memiliki kelebihan seperti interferensi anti elektromagnetik, ketahanan terhadap korosi, dan suhu tinggi dan ketahanan tekanan tinggi. Ini dapat mencapai deteksi suhu waktu nyata di lingkungan eksternal yang lebih keras dan memiliki prospek aplikasi yang luas. The fluorescence fiber temperature measurement system developed by Huaguang Tianrui based on fluorescence fiber temperature measurement technology has unique advantages compared to other temperature measurement methods. It deeply explains the working principle of the fluorescence fiber thermometer, analyzes the key factors affecting temperature measurement, and establishes a theoretical basis for the design of the fluorescence fiber thermometer. Kemudian, the overall design of the fluorescent fiber thermometer was carried out, including the optical path, circuit, perangkat lunak, structure, and algorithm. To verify the feasibility of the overall plan, a comparative experiment of temperature measurement was designed, and the overall plan was analyzed and studied based on actual data. The fiber optic temperature measurement system has been summarized and discussed, and future directions and ideas for improving fiber optic temperature measurement have been proposed.
The technology of fluorescent fiber thermometer:
(1) Key technologies of optical mechanical structure:
Using a single optical fiber to simultaneously transmit light source signals and fluorescence signals, reducing the volume and fluorescence loss of the fluorescence fiber thermometer;
Using filters to screen excitation light and fluorescence;
Adopting advanced technology to achieve sealing of fluorescent fiber optic probes.
(2) The key technology of demodulation circuit:
Using dynamic adjustment signal input to achieve periodic switching and output power adjustment of the light source, indirectly achieving amplitude adjustment of the sampling signal;
Using correction signals to amplify sampled signals and correct biases;
Simplify circuit components and integrate control, pengolahan, communication and other functions into chips, which is conducive to the miniaturization of fluorescence fiber thermometers;
Using fitting algorithms to calculate fluorescence lifetime and convert temperature;
Filter the fluorescence lifetime results using a filtering algorithm to reduce errors and improve the accuracy of the output results.
Design of Termometer Serat Optik Fluoresen:
1、 The fluorescence probe part of the optical path adopts advanced technology to replace traditional probe protection schemes, increasing the flexibility and sealing effect of the probe;
2、 The electrical characteristics of some components in the demodulator vary with temperature, and a dynamic adjustment signal is added to the circuit to adjust the stability of the signal waveform, balance waveform accuracy and error;
3、 The data processing section proposes a combination filtering method for data processing, which effectively reduces errors and improves the accuracy of output results;
4、 The software part is designed with multiple working modes and parameter reading and configuration functions to improve the adaptability of this system.
Why use pengukuran suhu serat optik neon:
Temperature is an important reference quantity in daily production and life, and with the continuous advancement of technology and the development of human society, people have increasingly high requirements for temperature in daily industrial production and daily life. In the field of industrial production, produksi baja, from raw material processing, ironmaking to mold casting, steel rolling, dll., has strict temperature control. Misalnya, the preservation and transportation of fresh food in daily life, as well as temperature monitoring and control, have a significant impact on food safety and taste. Karena itu, the importance of accurate temperature measurement is self-evident. Pada saat yang sama, in the face of increasingly specialized technical requirements classification and continuous refinement of technical conditions, corresponding measurement equipment and measurement technology classification are also increasing, and the demand for temperature measurement devices designed for various specialized environments and special requirements is constantly emerging. Under special circumstances and extreme environmental conditions, as well as different requirements such as fast dynamic response, remote measurement, and multi-point measurement, traditional temperature measurement and signal transmission have become increasingly difficult to meet different demanding conditions, and the difficulty of implementation has also increased.
Fluorescence fiber optic temperature measurement function:
Saat ini, traditional temperature measurement equipment has some practical difficulties in use in many special measurement environments, such as the harsh environment of the temperature measurement point, such as corrosion, tegangan tinggi, narrow space, dll., or the strong electromagnetic interference in the area where the measurement point is located, such as temperature monitoring of motors and high-voltage transformers. In response to the above difficulties, most new temperature sensors need to have advantages such as strong electromagnetic interference resistance, kinerja isolasi yang baik, respon cepat, dan ukuran kecil. With the application of various new materials and processes, as well as the exploration of new measurement methods, a variety of new temperature measurement devices have emerged. One of them is temperature measurement equipment based on fiber optic communication technology.
Before the birth of fiber optic fluorescence measurement technology, there were already various temperature measurement techniques. The first mercury thermometer was born as early as 1714. Mercury thermometers belong to the expansion measurement technology, which utilizes the principle of thermal expansion and contraction, and the space occupied by mercury volume varies with different temperatures. The scale of a mercury thermometer vividly displays the numerical value of temperature. Based on this principle, in addition to liquids, teknologi pengukuran untuk berbagai material seperti gas dan logam juga telah muncul di masa depan. Dengan kemajuan teknologi yang terus menerus, pesatnya perkembangan ketenagalistrikan telah membawa ide dan teknologi pengukuran baru. Teknologi termokopel didasarkan pada sifat listrik yang berbeda dari komponen elektronik pada suhu yang berbeda, dan saat ini merupakan teknologi pengukuran suhu yang paling banyak digunakan dan beragam. Selain itu, teknologi komunikasi optik juga menunjukkan arah baru untuk pengukuran suhu. Perangkat pengukuran suhu inframerah yang dibuat dengan menggunakan karakteristik radiasi termal benda yang berbeda pada suhu yang berbeda dapat mencapai pengukuran suhu dalam jarak jauh dan rentang yang luas., as well as indirect temperature measurement methods using intermediate devices such as fluorescent materials and gratings.
Characteristics of various temperature measurement systems
Expansion temperature measurement system
1. Low price 2. Convenient operation and reading 3. Simple and easy to manufacture mechanism
1. Akurasi rendah 2. Easy to damage 3. Cannot achieve automation
Infrared thermal imaging temperature measurement system
1. Non contact temperature measurement 2. Mudah digunakan 3. Biaya rendah 1. Large error
2. Can only measure surface temperature. 3. Cost of manual inspection
Sistem pengukuran suhu nirkabel
1. Instalasi mudah 2. Biaya rendah
1. Poor reliability, carrying batteries, umur pendek, high false alarm rate
2. Affects the performance of insulators
3. The large volume of sensors affects heat dissipation and poses a safety hazard to primary equipment
Fiber Bragg Grating Temperature Measurement System
1. It can achieve quasi distributed temperature measurement, suitable for long-distance and large area measurement
2. Adopting fiber optic technology to resist electromagnetic interference
3. Good insulation performance
1. The sensor probe is large and difficult to install
2. Low reliability, grating is prone to desensitization and failure
3. Short lifespan
4. Unable to achieve single cabinet matching and on-site display
5. Expensive price
Advantages of Fluorescent Fiber Optic Temperature Measurement System
1. Aman dan dapat diandalkan, can achieve calibration free, with good consistency, interchangeability, dan stabilitas
2. Umur panjang, bebas perawatan
3. The probe has a small volume and can penetrate deep into the hot spot to achieve true monitoring
4. Interferensi anti elektromagnetik, kinerja isolasi yang baik
5. It can achieve on-site display, making it easy to integrate into the operating system
6. Instalasi mudah
Fluorescence temperature measurement technology converts temperature signals into optical signals based on the photoluminescence phenomenon of fluorescent materials, dan memanfaatkan efisiensi tinggi serat optik dalam transmisi sinyal optik untuk secara efektif mencapai pengukuran suhu waktu nyata dan jarak jauh. Teknologi pengukuran fluoresensi serat optik mewarisi keunggulan teknologi penginderaan serat optik. Dibandingkan dengan teknologi pengukuran suhu lainnya, tidak hanya memiliki karakteristik ketahanan terhadap korosi, isolasi yang baik, dan ukuran kecil, tetapi juga secara efektif mengurangi interferensi elektromagnetik. Sementara itu, teknologi pengukuran fluoresensi serat optik juga memiliki karakteristik umur yang panjang, bebas perawatan, stabilitas yang baik, dan konsistensi. Selain itu, sistem ini juga dilengkapi tampilan real-time, integrasi yang mudah ke sistem lain, dan pemasangan yang mudah.
Application scenarios of fluorescence fiber optic temperature measurement system
Fluorescence temperature measurement technology, with its characteristics of anti electromagnetic interference, ukuran kecil, respon dinamis yang baik, ketahanan terhadap korosi, long transmission distance, and low transmission loss, has gradually expanded its application fields to medical applications such as microwave heating therapy, transformer internal temperature detection, or substation temperature monitoring in unique or proprietary environments and requirements, in addition to temperature monitoring and measurement commonly used in daily production and life. It has received attention and research from scholars.
Transformers generate a large amount of heat during operation, which can affect the performance of their various components, leading to changes in transformer load capacity, keandalan operasional, dan umur. Saat ini, oil immersed transformers and oil immersed transformers are widely used in the power system. The appearance of the transformer body is the outer wall of the oil tank, and its interior mainly consists of transformer winding coils and cooling oil. The slender structure of the fiber optic fluorescent probe allows it to be installed and fixed on the transformer coil, minimizing data monitoring lag and improving monitoring accuracy to the greatest extent possible.
High voltage switchgear is commonly used in power system high-voltage situations to control voltage switching. The main temperature measurement point of the switchgear is the contact joint, but the space in this area is relatively narrow. The size and diameter of fiber optic fluorescent probes are very small. The slender shape of the fiber optic probe allows it to be easily bent and inserted into narrow spaces, and then fixed in contact with the stationary contact, which does not affect the normal operation of the equipment and is therefore safer. Selain itu, fiber optic fluorescence temperature measurement technology can also be applied to mining of coal, oil and other minerals, as well as storage of raw materials (such as oil and natural gas) in industrial production that require long-term strict temperature monitoring.
The research on fiber optic fluorescence temperature measurement technology has been ongoing for many years since its inception, but with the continuous emergence of new devices and the expansion of application fields, the performance requirements for sensors have increased, and there is still a lot of room for development; Di sisi lain, new materials with superior performance continue to emerge, and sensitive materials with new characteristics provide us with new choices, making the design of sensors face new concepts. Sebagai teknologi yang menjanjikan, fiber optic fluorescence temperature sensing technology can be widely applied in some special industries, such as medical, high-voltage electrical equipment monitoring, pengolahan metalurgi, and online temperature detection in aerospace. Karena itu, establishing a comprehensive and systematic theory of fiber optic fluorescence temperature detection, providing simple and practical technologies, is of great significance for improving the level of scientific instruments in this field in China.
Sensor suhu serat optik, Sistem pemantauan cerdas, Produsen serat optik terdistribusi di Cina
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