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اندازه‌گیری همزمان پارامترهای محیطی دما و کرنش با یک توری براگ فیبری یکنواخت | ||
| الکترومغناطیس کاربردی | ||
| مقاله 2، دوره 11، شماره 2 - شماره پیاپی 27، مهر 1402، صفحه 11-16 اصل مقاله (804.71 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| محسن منصورسمائی1؛ عبدالله ملک زاده* 2؛ رسول پاشایی3 | ||
| 1دانشجوی دکتری، دانشگاه جامع امام حسین(ع)، تهران، ایران. | ||
| 2استادیار ، دانشگاه امام حسین (ع)،تهران ایران | ||
| 3دانشجوی دکترا، دانشگاه علم و صنعت ایران، تهران، ایران | ||
| تاریخ دریافت: 29 اردیبهشت 1402، تاریخ بازنگری: 16 مرداد 1402، تاریخ پذیرش: 21 شهریور 1402 | ||
| چکیده | ||
| امروزه روش‌های بسیار متنوعی برای اندازه‌گیری همزمان دما و کرنش به کمک حسگرهای FBG پیشنهاد شده است که همه آن‌ها را می‌توان به دو دسته کلی تقسیم کرد. روش‌هایی که از دو یا چند FBG یکنواخت یا غیریکنواخت برای اندازه‌گیری همزمان استفاده می‌کنند و روش‌هایی که تنها از یک FBG غیریکنواخت به این منظور بهره می‌برند. در این مقاله، برخلاف تمام روش‌هایی که تاکنون مطرح شده، برای اندازه‌گیری همزمان دما و کرنش تنها استفاده از یک FBG یکنواخت پیشنهاد شده است که کمترین مقدار از بازه‌ی طیفی منبع پهن‌باند را اشغال می‌کند. در این روش از یک ابزار مکانیکی به نام تیر افقی یک سر بسته (طرّه) برای تبدیل کرنش یکنواخت به کرنش غیریکنواخت در طول FBG استفاده می‌شود. به کمک این طرّه علاوه بر طول‌موج، توان پیک بازتابی از توری براگ نیز به تغییرات کرنش حساس خواهد شد درحالی که این توان بازتابی نسبت به تغییرات دما هیچ واکنشی از خود نشان نمی‌دهد. درنتیجه،کرنش اعمالی به سازه توسط تغییرات توان پیک بازتابی، و دما توسط جابجایی طول‌موج بازتابی از توری براگ تعیین می‌شوند. باتوجه به نتایج شبیه‌سازی، حساسیت این حسگر نسبت به تغییرات دما pm/℃ 21/14 و نسبت به تغییرات کرنشpm/με 68136/0 بدست آمده است. | ||
| کلیدواژه‌ها | ||
| اندازه‌گیری همزمان؛ توری براگ فیبری؛ حسگر دما؛ حسگر فیبر نوری؛ حسگر کرنش | ||
| عنوان مقاله [English] | ||
| Measurement of environmental parameters of temperature and strain at the same time with a uniform fiber Bragg grating | ||
| نویسندگان [English] | ||
| Mohsen Mansoursamaei1؛ abdollah malakzadeh2؛ rasoul Pashaei3 | ||
| 1PhD student, Imam Hossein University, Tehran, Iran. | ||
| 2Assistant Professor, Imam Hossein (AS) University, Tehran, Iran | ||
| 3PhD student, Iran University of Science and Technology, Tehran, Iran | ||
| چکیده [English] | ||
| Today, a wide variety of methods have been proposed to measure temperature and strain at the same time with the help of FBG sensors, all of which can be divided into two general categories. Methods that use two or more uniform or non-uniform FBGs for the measurement, and methods that use only one non-uniform FBG for this purpose. In this paper, unlike all the methods proposed so far, for the measurement of temperature and strain at the same time, the use of only one uniform FBG is proposed, which will occupy the least amount of spectral range of the broadband source. In this method, a mechanical tool called a cantilever is used to convert uniform strain to non-uniform strain during FBG. With this method, the peak power of reflection spectrum of the Bragg grating will be sensitive to changes in the applied strain to the grating while not reacting to temperature changes. As a result, the strain will be determined by changes in reflection peak power and temperature by changes in reflection Bragg wavelength. According to the simulation results, the sensitivity of this sensor to the temperature is 14.21 / pm/℃ and to the strain was 0.68136 pm/με. | ||
| کلیدواژه‌ها [English] | ||
| Measurement at the Same Time, Fiber Bragg Grating, Temperature Sensor, Optical Fiber sensor, Strain Sensor | ||
| مراجع | ||
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