本文選題：光纖布拉格光柵 + 光纖法-珀傳感器��； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：人體健康參數(shù)的檢測(cè)對(duì)于評(píng)估人體健康狀況、及早發(fā)現(xiàn)健康隱患有重要意義,是疾病發(fā)現(xiàn)、控制和治療的前提。光纖傳感器由于其體積小重量輕、可彎曲、對(duì)電磁絕緣等特性,在生物醫(yī)學(xué)傳感方面具有無可比擬的優(yōu)勢(shì)。本文使用兩種光纖傳感器——光纖布拉格光柵傳感器和光纖法-珀傳感器對(duì)人體健康參數(shù)測(cè)量技術(shù)進(jìn)行研究。對(duì)光纖傳感器和其他類型生物醫(yī)學(xué)傳感器進(jìn)行了介紹,重點(diǎn)討論光纖布拉格光柵傳感的原理和光纖法-珀傳感器的傳感原理。設(shè)計(jì)光纖布拉格光柵傳感器對(duì)骨骼受力形變程度進(jìn)行檢測(cè)。為了準(zhǔn)確獲取測(cè)量數(shù)據(jù),首先對(duì)光纖布拉格光柵傳感器進(jìn)行標(biāo)定,通過標(biāo)定實(shí)驗(yàn)獲取了光纖所在位置形變程度和光柵反射峰中心波長之間的關(guān)系式。搭建光纖布拉格光柵骨骼受力形變測(cè)試系統(tǒng),對(duì)骨骼受力時(shí)的形變情況進(jìn)行檢測(cè),實(shí)驗(yàn)證明光纖布拉格光柵傳感器可以準(zhǔn)確地檢測(cè)骨骼的形變程度,靈敏度可達(dá)39.00525pm/mm。用光纖熔接機(jī)和氣壓泵,以單模光纖和玻璃管為材料,制作了一種光纖端面微型法-珀傳感器,制作過程簡單高效,微型傳感腔結(jié)構(gòu)緊湊,壁厚僅為幾微米。在人體典型幅值范圍內(nèi)對(duì)其進(jìn)行壓強(qiáng)測(cè)試,實(shí)驗(yàn)表明壓強(qiáng)增大時(shí)光譜向波長更長、頻率更低的方向移動(dòng),壓強(qiáng)測(cè)試靈敏度達(dá)到0.3pm/mmHg。制作了腔長不同的兩個(gè)光纖端面微型法-珀傳感器,使用二甲基硅油將兩個(gè)傳感器封裝在一個(gè)結(jié)構(gòu)里并進(jìn)行溫度傳感實(shí)驗(yàn),實(shí)驗(yàn)顯示:兩個(gè)傳感器都能較好的反映溫度變化,其中腔長較短的傳感器靈敏度為55.615pm/℃,腔長較長的傳感器靈敏度為43.55pm/℃。對(duì)比可知,腔長較短的傳感器光譜更平滑、相位周期更長,實(shí)驗(yàn)證明腔長較短的傳感器在靈敏度方面有更好的表現(xiàn)。本文提出了一種二氧化硅材質(zhì)的光纖端面微型法-珀傳感器,此種傳感器生產(chǎn)成本低、機(jī)械強(qiáng)度大,在人體典型幅值范圍內(nèi)的壓強(qiáng)、溫度靈敏度良好,可被應(yīng)用于人體健康參數(shù)的檢測(cè)。
[Abstract]:The detection of human health parameters plays an important role in the evaluation of human health and the early detection of potential health hazards, which is the premise of disease detection, control and treatment. Fiber optic sensors have unparalleled advantages in biomedical sensing due to their small size, flexible, electromagnetic insulation and other characteristics. In this paper, two kinds of fiber optic sensors, fiber Bragg grating sensor and fiber Fabry-Perot sensor, are used to study the measurement technology of human health parameters. Fiber optic sensors and other biomedical sensors are introduced in this paper. The principle of fiber Bragg grating sensor and the sensing principle of fiber Fabry-Perot sensor are discussed in detail. A fiber Bragg grating sensor is designed to detect the deformation of bone. In order to obtain the measurement data accurately, the fiber Bragg grating sensor is calibrated at first, and the relationship between the deformation degree of the fiber position and the center wavelength of the grating reflection peak is obtained by the calibration experiment. A fiber Bragg grating (FBG) system was set up to measure the deformation of the bone. The experimental results show that the fiber Bragg grating sensor can accurately detect the deformation degree of the bone, and the sensitivity can reach 39.00525pm / mmm. Using optical fiber welding machine and air pressure pump, a kind of optical fiber end face miniature method-Perot sensor is fabricated with single mode optical fiber and glass tube as material. The fabrication process is simple and efficient, the structure of micro sensor cavity is compact, and the wall thickness is only several microns. The experimental results show that the spectrum shifts to the direction of longer wavelength and lower frequency when the pressure increases, and the sensitivity of the pressure measurement reaches 0.3 pm / mmHg. Two micro-Fabry-Perot sensors with different cavity length were fabricated. The two sensors were encapsulated in a single structure with dimethyl silicone oil and the temperature sensing experiments were carried out. The experiment shows that both sensors can reflect the temperature change well. The sensitivity of the sensor with shorter cavity length is 55.615pm/ 鈩，

本文編號(hào)：1804954