fiber optics solutions for extreme environments-INNO

Penderia suhu gentian optik pendarfluor have numerous advantages suitable for extreme environments:

Kepekaan tinggi: It can achieve extremely high sensitivity, which enables precise sensing of small temperature changes even in extreme environments. Contohnya, in some scientific research scenarios or precision industrial control processes that are extremely sensitive to temperature changes, high sensitivity ensures measurement accuracy.
Tidak terjejas oleh gangguan elektromagnet: Based on fluorescent optical fibers for temperature measurement, it is not affected by electromagnetic interference from the surrounding environment. In industrial equipment monitoring under strong electromagnetic fields, temperature measurement of large substation equipment, or special scientific research sites with complex electromagnetic radiation environments, kelebihan ini memastikan kebolehpercayaan data pengukuran suhu, manakala penderia probe logam tradisional boleh menyebabkan ralat pengukuran disebabkan oleh gangguan elektromagnet.
Keupayaan pengukuran jauh: Jarak penghantaran gentian optik boleh mencapai puluhan meter tanpa menjejaskan ketepatan pengukuran. Dalam beberapa persekitaran melampau yang berbahaya, seperti relau suhu tinggi dan persekitaran sinaran nuklear, penderia boleh diletakkan pada titik pengukuran melalui gentian optik jarak jauh, dan pengendali boleh mengumpul dan memantau data dari jarak yang selamat; Ini juga sangat sesuai untuk senario yang sukar diakses seperti mengukur suhu lahar gunung berapi dan mengukur suhu air berhampiran bolong geoterma laut dalam.
Tidak perlu bekalan kuasa (fiber optic cables themselves do not require power supply): The main source of energy is the light source, which is safe and convenient to use in environments that require explosion-proof or isolated power supply (such as oil and gas extraction sites, chemical raw material storage warehouses, and other flammable and explosive places, mines, dll.), avoiding potential hazards such as electric sparks that may be caused by power supply.
Diversity and flexibility of measurement points: By changing the number and position of fluorescent probes in the optical fiber, it is easy to achieve multi-point or distributed temperature measurement. In large-scale pipeline networks, buildings with wide coverage areas, dll., probes can be set up at multiple key locations according to demand for comprehensive temperature monitoring, increasing the flexibility and applicability of the system.
Corrosion resistance and high temperature resistance: Fiber optic materials have excellent corrosion resistance and high temperature resistance, and can be used in harsh environments, withstanding high temperatures, tekanan tinggi, and corrosive chemical substances. Maintain the normal temperature measurement function of sensors in high-temperature, high-pressure, and highly corrosive environments such as the combustion zone of aerospace engines, around metal smelting furnaces, and inside chemical reaction vessels.
Kestabilan jangka panjang: The combination of fluorescent substances and optical fibers has high chemical and physical stability. Under long-term and uninterrupted monitoring requirements, seperti pemantauan suhu peralatan platform minyak dan gas luar pesisir dan peralatan stesen pemantauan suhu persekitaran di rantau Artik, ia boleh berfungsi dengan stabil untuk masa yang lama, sangat mengurangkan kekerapan penyelenggaraan dan penentukuran, menjimatkan kos dan tenaga kerja dengan berkesan.
Ketepatan tinggi: Bahan pendarfluor bertindak balas dengan cepat dan mempunyai kebolehulangan yang baik kepada suhu, menjadikan hasil pengukuran lebih tepat dalam kedua-dua medan suhu yang berubah dengan pantas (seperti turun naik suhu dalam tindak balas pembakaran) dan keperluan pengukuran suhu stabil jangka panjang, memastikan output data berketepatan tinggi.
Kelajuan penghantaran data yang pantas: Penghantaran data gentian optik adalah sangat pantas, amat penting dalam sistem persekitaran yang melampau yang memerlukan tindak balas pantas. Contohnya, pemantauan suhu pada saat penyalaan enjin roket, high-speed data transmission can provide timely feedback on temperature information for timely decision-making and adjustment; Real time or almost real-time temperature monitoring can be achieved.
Easy integration and automation: The fluorescence fiber optic temperature measurement system can be easily integrated with existing computer systems and automation equipment, facilitating the automation and intelligence of temperature monitoring. In some modern automated production factories, remote unmanned monitoring stations, dll., intelligent temperature management can be easily integrated into existing systems.
Good electrical insulation and explosion resistance: The fiber optic sensor used for fluorescence fiber optic temperature measurement is an electrical insulator that is non-conductive. Even in flammable and explosive environments, ia tidak akan menghasilkan percikan elektrik atau elektrik statik, yang boleh menyebabkan kemalangan. Oleh itu, dalam persekitaran yang melampau dengan bahaya letupan seperti penyimpanan kimia dan minyak dan gas, keselamatan intrinsiknya amat tinggi.

Pengesan suhu gentian optik yang diedarkan juga mempunyai kelebihan unik mereka untuk persekitaran yang melampau:

Penebat: Gentian optik itu sendiri terlindung secara elektrik, sememangnya selamat, dan tahan terhadap gangguan elektromagnet. Ini amat penting dalam pemantauan alam sekitar sistem kuasa, seperti berhampiran pencawang besar atau menara penghantaran voltan tinggi. Penebat ini boleh mengelakkan kemalangan elektrik dan memastikan pengukuran suhu tidak terjejas oleh gangguan elektromagnet luaran, memastikan ketepatan data. Gentian optik teragih penderia suhu mampu berfungsi dalam persekitaran yang mempunyai risiko gangguan elektromagnet, seperti pemantauan suhu kemudahan kuasa di kawasan yang kerap disambar petir atau pemantauan suhu peralatan penjanaan kuasa angin dan fotovoltaik semasa operasi.
Pemantauan jarak jauh: Ia boleh mencapai pemantauan suhu masa nyata berterusan yang diedarkan dalam jarak yang jauh dan julat yang besar, mengukur nilai suhu dengan tepat pada mana-mana titik sepanjang kabel gentian optik. Dalam persekitaran yang melampau dengan ciri-ciri jarak jauh, seperti pemantauan perbezaan suhu keseluruhan kabel gentian optik dasar laut, pemantauan suhu di sepanjang saluran paip minyak berbilang kilometer atau bahkan puluhan kilometer atau sistem saluran paip pemanasan bandar, adalah mungkin untuk mencapai liputan gentian penuh dan mendapatkan maklumat suhu yang komprehensif, greatly reducing the complexity and cost of detection point layout.
Rintangan kakisan: The material used to make the fiber optic core is silicon dioxide, which endows the fiber optic sensor with excellent corrosion resistance and long service life. In highly corrosive marine environments, industrial wastewater discharge pipelines, and underground oil and gas pipelines, a large amount of corrosive media (such as seawater, acidic and alkaline solutions, dll.) are densely distributed. Distributed fiber optic temperature sensors can measure temperature stably for a long time without being eroded.
Strong flexibility: Optical fibers have excellent flexibility and flexible installation positions, which can meet the needs of different projects and installation positions. In environments with complex spatial layouts (seperti ruang pemasangan yang kecil dan tidak teratur untuk instrumen dan peralatan di dalam kapal angkasa, dan adegan terowong yang kompleks dalam projek pemuliharaan air yang besar), gentian optik boleh dibengkokkan dan disusun mengikut keperluan spatial sebenar, memudahkan penderia untuk mengukur dengan tepat dalam persekitaran yang melampau yang sukar untuk dirancang dan susun atur. Pengukuran suhu di ruang sempit seperti petak enjin kereta dan sayap kapal terbang juga boleh memanfaatkan ciri ini.
Mendapatkan beberapa titik maklumat sekaligus: Dengan mengukur keseluruhan kawasan gentian sekali gus, peta taburan satu dimensi bagi kawasan yang diukur boleh diperolehi. Dengan menetapkan rangka kerja khas untuk gentian (seperti membingkainya menjadi bentuk parut), the two-dimensional and three-dimensional distribution of the measured area can also be determined. In large chemical storage tanks and buildings, it is necessary to conduct three-dimensional temperature field distribution detection (such as detecting the temperature distribution at different heights and areas in a large warehouse, using a three-dimensional fiber optic network to transmit and receive and measure the temperature at different locations), and overall temperature detection of the internal structure of large bridges, which can obtain multi-point and overall temperature information. This advantage is very obvious and can efficiently understand the temperature status of the entire monitoring space.
Suitable for various complex and extreme environments: Pengesan suhu gentian optik yang diedarkan boleh menyesuaikan diri dengan pelbagai persekitaran yang melampau. Contohnya, dalam senario pengeluaran yang kompleks dan pelbagai dalam pelbagai industri seperti kimia, elektronik, metalurgi, farmaseutikal, dll., ia boleh berfungsi dengan berkesan apabila mengukur medan pengedaran haba tangki simpanan besar yang menyimpan mudah terbakar, bahan letupan, gas atau bahan lain. Lebih-lebih lagi, dalam peralatan besar seperti dandang, penjana, dll., adalah sukar untuk memasang penderia konvensional kerana strukturnya yang kompleks, atau sensor konvensional tidak boleh didekati kerana gangguan elektromagnet yang kuat, atau kos pengukuran titik demi titik terlalu tinggi untuk menjadi praktikal. Penderia suhu gentian optik yang diedarkan boleh memainkan peranan penting dalam persekitaran yang melampau ini di mana penderia tradisional tidak sesuai. Selain itu, good temperature monitoring results can be achieved in extreme scenarios such as temperature field distribution measurement in bridges, empangan, kapal, large buildings, gudang, high-pressure vessels, terowong, and even aircraft and spacecraft bodies.

Basic Principles and Development of Penderia Gentian Optik Teragih

The principle of distributed sensor suhu gentian optik is to use the Raman scattering principle of fiber optic. When the temperature of a certain part of the fiber optic changes, the scattered light is affected. Through high-speed signal acquisition and data processing technology, the location of the disturbance can be accurately located and real-time temperature alarm information can be provided. At the beginning of its development, it started with Rayleigh scattering systems based on optical time domain reflectometry (OTDR), and went through Raman scattering systems based on OTDR and Brillouin scattering systems based on OTDR. This development process greatly improved the temperature measurement accuracy and range. Pada masa ini, research on optical frequency domain reflectometry (OFDR) technology is also constantly deepening. Although there is still some way to go in terms of industrial practicality, it is still the development direction of distributed fiber optic temperature sensor technology. With the development, the performance of the entire distributed fiber optic temperature sensor continues to improve to better adapt to various extreme environmental measurement needs.

Penderia suhu parut Gentian Bragg also have multiple advantages suitable for extreme environments:

Unique signal carrier and corresponding advantages: using reflected wavelength as the signal carrier (i.e. wavelength modulation), it is not affected by current and voltage fluctuations. Compared with traditional sensors that use current and voltage as signal carriers, such as temperature sensors based on traditional electrical measurement methods (such as metal resistance based temperature detectors) in ultra-low temperature and strong magnetic field environments, they cannot work due to the Kondo effect at ultra-low temperatures (causing a significant increase in temperature probe resistance), Hall effect under strong electromagnetic fields, and magnetoresistance effect (causing strong interference to the readings of most electronic components). Fiber Bragg grating temperature sensors completely avoid this drawback and can perform temperature measurements normally. This characteristic of using wavelength as a signal also has stability that matches its optical method. Even in complex optical interference environments or light source fluctuations, it can still detect wavelength drift caused by temperature changes relatively stably, thus enabling accurate temperature measurement.

Small and lightweight, suitable for distributed multi-point measurement: bersaiz kecil, light in weight, and easy to continuously produce multiple gratings in one optical fiber. The grating array produced is lightweight and flexible, and when combined with time-division multiplexing and wavelength division multiplexing technologies, it is very suitable as a distributed sensing element. It performs well in distributed multi-point temperature measurement of large areas or large-scale structures, such as the need to arrange numerous measurement points on the surface of the huge fuselage of an aerospace aircraft, and temperature monitoring at multiple points on the surface and inside of large superconducting equipment (maglev train superconducting components, particle accelerator superconducting components, dll.). After embedding or pasting inside or on the surface of the structure, multi-point temperature measurement can be achieved; This feature is also beneficial for reducing the complexity and weight burden of equipment when arranging multiple sensors, and has irreplaceable advantages for some cutting-edge applications that require strict weight requirements, such as sensor loads in aerospace exploration equipment.
Strong resistance to electromagnetic interference and corrosion: Ini adalah kelebihan biasa keluarga sensor gentian optik. Sensor ini boleh digunakan secara meluas dalam persekitaran yang melampau, sama ada untuk memantau suhu peralatan di kawasan gangguan elektromagnet bersuhu tinggi dan tinggi seperti kilang peleburan logam, atau untuk mengesan suhu dalam beberapa peralatan elektrik kapal laut akibat risiko kakisan dan gangguan elektrik dalam semburan garam dan persekitaran lembap di sekeliling. Operasi yang stabil juga boleh dicapai dalam persekitaran ekstrem khas seperti kuasa nuklear, di mana terdapat sinaran elektromagnet yang kuat dan potensi risiko kakisan (seperti kehadiran atmosfera menghakis di pulau nuklear disebabkan oleh bahan kimia khas), such as temperature monitoring of external cooling system pipelines of nuclear reactors or heat monitoring of some electrical equipment inside nuclear power plants.
Sensitivity and response speed advantages: Fiber Bragg grating temperature sensors based on phase sensitive detection can achieve sub millikelvin level ultra-high sensitivity, which means that they can detect even small temperature changes (such as weak temperature fluctuations near absolute zero, temperature changes in extremely micro research environments such as biological cells), making them suitable for precise measurement of small temperature changes. Pada masa yang sama, it has a fast response time and can provide timely and accurate temperature data feedback in extreme scenarios where rapid temperature changes occur, such as changes in the temperature field around the detonation shock wave generated at the moment of an explosion experiment or sudden temperature changes on the surface of the irradiated object under high-energy laser irradiation. It also has broad application prospects in fields such as biomedical imaging, mikrobendalir, nanotechnology, which require extremely high reaction speed and measurement accuracy.

Comparison of the advantages of fiber optics solutions in extreme environments

Keupayaan gangguan anti elektromagnet
Penderia suhu gentian optik pendarfluor: Based on the principle of fluorescent fiber optic, it naturally isolates electromagnetic interference and can ensure accurate temperature measurement without being affected in extreme scenarios such as strong electromagnetic field environments, industrial plants with numerous electronic devices and complex electromagnetic environments.
Pengesan suhu gentian optik yang diedarkan: Fiber optic has the fundamental characteristics of electrical insulation and immunity to electromagnetic interference. In the strong electromagnetic field area related to electricity (around substations and high-voltage transmission lines), temperature measurement data is stable, without interference or deviation, and can accurately monitor temperature in factory workshops with a large number of electrical equipment generating complex electromagnetic fields.
Penderia Suhu Grating Fiber Bragg: Using wavelength as the signal carrier, it avoids electromagnetic interference in current and voltage, and can stably detect temperature in extreme scenarios with high-intensity electromagnetic fields (such as around large particle accelerators, near strong electromagnetic emission equipment, dll.).
In terms of extreme environmental resistance (suhu tinggi, tekanan tinggi, strong corrosion, dll.)
Penderia suhu gentian optik pendarfluor: The fiber optic material is corrosion-resistant and high-temperature resistant, and can penetrate deep into industrial furnaces at high temperatures for temperature measurement up to several hundred degrees Celsius; Work normally in environments with corrosive chemicals, such as chemical reaction vessels and acid storage tanks; Suitable for temperature monitoring in high-pressure environments (such as temperature monitoring near high-pressure hot springs in deep sea).
Pengesan suhu gentian optik yang diedarkan: The fiber optic material is corrosion-resistant silicon dioxide, which can continuously monitor temperature in corrosive environments of chemical wastewater pipelines and around underground pipelines in saline alkali areas for decades of service life; Effective in monitoring the temperature along large high-temperature steam transmission pipelines in scenarios where high-temperature oil generates heat and pressure in long-distance oil pipelines; It can also be used in scenarios such as aircraft and spacecraft bodies that require temperature monitoring while experiencing high-altitude pressure changes.
Penderia Suhu Grating Fiber Bragg: With its miniaturized integrated design, it can be attached to the surface of high-temperature components (for monitoring the surface temperature of aviation turbine engine blades) untuk pengukuran; Using fiber Bragg grating sensors made of special materials to solve high temperature and ultra-high temperature measurement (such as sapphire fiber Bragg grating sensors that can measure high temperatures up to 1600 ℃); Temperature measurement can also be carried out on outdoor electrical equipment in harsh marine climate environments with corrosion risks (external motor temperature of offshore wind power generation equipment).

Measurement dimensions and flexibility
Penderia suhu gentian optik pendarfluor: By adjusting the arrangement of the fluorescent probe, point to multipoint measurement can be achieved, thereby meeting the temperature measurement needs in different spaces and flexible layout requirements. It can also balance small-scale local temperature monitoring and large-scale distributed point temperature monitoring. Contohnya, when arranging temperature monitoring points for different production line equipment in a factory building, the position of fluorescent probes can be freely set according to the distribution of equipment to create or adjust the temperature monitoring layout.
Pengesan suhu gentian optik yang diedarkan: Keseluruhan talian gentian optik boleh dianggap sebagai kawasan penderiaan, yang boleh melengkapkan pengukuran berterusan jarak jauh sekaligus. Ia mempunyai ciri ukuran teragih semula jadi, terutamanya boleh dengan mudah membentuk rangkaian gentian optik untuk pemantauan suhu dalam kawasan dua dimensi atau tiga dimensi (seperti gudang tiga dimensi dan bangunan berbilang tingkat). Lebih-lebih lagi, fleksibiliti gentian optik membolehkan kedudukan pemasangan tidak terhad, dan boleh disusun antara saluran atau peralatan yang berbeza bentuk dan arah mengikut persekitaran tertentu untuk mendapatkan nilai suhu.
Penderia Suhu Grating Fiber Bragg: Kisi berbilang boleh disepadukan pada gentian optik tunggal untuk mencapai titik pengukuran berbilang. Namun begitu, berbanding dua di atas, ketumpatan titik pengukuran per unit panjang gentian secara teorinya boleh lebih tinggi. Through wavelength division multiplexing and time-division multiplexing technology, the temperature of each grating point can be measured in time or simultaneously. It is more suitable for fields with precise spatial layout (such as narrow internal space of optical instruments and biomedical micro samples requiring multi-point accurate temperature measurement), and due to its lightweight and flexibility, it also has great flexibility in attachment and embedding.
Cost and application popularization aspects
Penderia suhu gentian optik pendarfluor: It has achieved large-scale industrial production and application, with rapidly decreasing costs. Pada masa ini, it is widely used in medical diagnosis, energy management, dan bidang lain. With the expansion of popularity and technological upgrades, there is still room for cost reduction, making it easy for new users to choose and adopt. Memperkenalkan sensor ini melalui pengubahsuaian infrastruktur tidak memerlukan pelaburan kos yang sangat besar.
Pengesan suhu gentian optik teragih telah digunakan secara meluas dalam projek kejuruteraan berskala besar (seperti pemantauan kesihatan struktur jambatan besar dan sistem pemantauan suhu saluran paip jarak jauh) dan senario industri tertentu (seperti loji janakuasa dan pemantauan pencawang). Walaupun teknologinya telah berkembang secara matang, ia terhalang dalam mempopularkan beberapa projek kecil atau kos sensitif disebabkan oleh pelaburan awal yang agak tinggi dalam hos pengukuran dan peralatan sokongan, peletakan gentian optik, dll. Namun begitu, dengan promosi teknologi, kemajuan dalam bahan, dan penambahbaikan integrasi peralatan, kos permohonannya juga dijangka berkurangan.
Penderia Suhu Grating Fiber Bragg: Ia digunakan secara meluas dalam bidang pembuatan peralatan mewah seperti aeroangkasa dan pembuatan kapal besar, dan juga mempunyai bahagian tertentu aplikasi mikro dalam penyelidikan bioperubatan. Disebabkan oleh batasan teknologi parut Bragg gentian, terutamanya teknologi penyediaan bahan khas seperti gentian nilam, yang dikuasai dalam bilangan unit yang kecil dan mempunyai kos yang tinggi, seperti proses penyediaan yang kompleks dan keadaan penulisan parut khas, kos keseluruhan adalah tinggi. Lebih-lebih lagi, banyak aplikasi mewah masih bergantung pada komponen yang diimport. Jika kita ingin menerapkannya dalam senario industri umum atau promosi besar-besaran bidang pemantauan asas seperti dua sebelumnya, masih terdapat halangan kos yang ketara.