Synthesis of Eu(BTF)_3phen and Study on Its Property

采用常温搅拌法制备了配合物Eu(bTf)3PHEn(bTf=苯甲酰三氟丙酮,PHEn=邻菲罗啉),改善稀土铕配合物的荧光性能。对配合物的热稳定性和荧光性质进行了测定,结果表明其具有良好的热稳定性,在362 nM激发光激发下,能发射强烈的、来自于Eu3+离子的特征红光,最大发射峰在612 nM,半峰宽大约为8 nM。对邻菲罗啉中性配体进行了两种不同的分子修饰,荧光光谱测试表明,邻菲罗啉配体上引入不同数目的基基团,在一定程度上改善了Eu(bTf)3PHEn配合物的荧光性能。In order to improve the fluorescence properties of europium complex, Eu(BTF)3phen( BTF =Benzoyltrifluoroacetone, phen =o-phenanthroline) was synthesized by the method of stirring method at room temperature.The results showed that the complex has good thermal stability.The complex emitted a strong characteristic red light which was from Eu3 +under the exciting light of 362 nm.The maximum emission peak was at 612 nm.The full width at half maximum( FWHM) was 8 nm.Two different molecular modifications of the phenanthroline neutral ligands were carried out.The fluorescence spectra analysis showed that the fluorescent properties of Eu(BTF)3phen was improved by the introduction of different numbers of neighborhood groups onto the phenanthroline ligands

微型铣刀外径视觉测量系统的照明设计

为了满足微型铣刀外径视觉测量系统的照明需求,设计并制作了一种基于柯勒照明原理的平行光源。平行光源由白光lEd、孔径光阑和3组组合透镜组成,使用zEMAX对光路进行了仿真。设计并加工了多级可调金属圆筒机械结构,将光源各部分器件固定组合,光源总长为142 MM。搭建了微型铣刀外径视觉测量系统,并分别使用漫射背光光源和平行背光光源对铣刀进行照明成像。实验结果表明,平行背光照明提高了铣刀测量系统的测量精度,降低了铣刀的测量离差

Fiber Temperature Sensor Based on Fluorescent Lifetime

为了实现恶劣环境下温度的测量,设计了一种基于荧光寿命机理的光纤温度传感系统.温度传感系统选用415 nM lEd作为光源,以稀土荧光材料y2O2S:Eu作为温度敏感材料,通过探测放大器和信号采集模块测量了敏感材料的荧光寿命,并由荧光寿命与温度的单调关系最终实现了温度的测量.采用油浴加热的方法进行温度实验,实验结果表明,温度传感系统在25~80℃实现了温度的测量,分辨率为0.5℃.In order to achieve the measurement of temperature in harsh environments,a fiber temperature sensor system based on the fluorescent lifetime was designed.415 nm LED was selected as the light source and a rare earth material Y2O2S: Eu was selected as the sensitive material.Finally,the fluorescence lifetime of sensitive material was measured by a probe amplifier and signal acquisition module and temperature measurements were realized due to the monotonic relationship between the fluorescence lifetime and temperature.Temperature experiments were carried out using an oil bath heating method,and the experimental results showed that: the temperature measurement can be realized in the range of 25 ~ 80 ℃ and the temperature sensor has an average resolution of 0.5 ℃