CAJ | 학술논문

为提高动态光散射(dynamic light scattering,DLS)纳米粒度仪测量准确度与稳定性、适应JJG 1104———2015《动态光散射粒度分析仪检定规程》要求,通过系统分析仪器噪声来源与影响程度,将接收光强信号分为3部分,推导出光强信号自相关函数的数学式,并从其物理意义出发,提出针对性的噪声剔除方法。通过搭建仪器软硬件平台进行实验,可以看出仪器示值误差<7%,重复性为0.9%,表明噪声剔除方法有效,能满足规程要求。
위제고동태광산사(dynamic light scattering,DLS)납미립도의측량준학도여은정성、괄응JJG 1104———2015《동태광산사립도분석의검정규정》요구,통과계통분석의기조성래원여영향정도,장접수광강신호분위3부분,추도출광강신호자상관함수적수학식,병종기물리의의출발,제출침대성적조성척제방법。통과탑건의기연경건평태진행실험,가이간출의기시치오차<7%,중복성위0.9%,표명조성척제방법유효,능만족규정요구。
Noise source and influence level have been systematically analyzed to meet the regulation JJG 1104———2015 and to improve the measurement accuracy and stability of nano particle analyzer based on dynamic light scattering (DLS). The light intensity signal received was divided into three parts to derive a mathematical formula for self correlation function. A noise-eliminating method was put forwarded from the physical significance of the signal. According to the experiments conducted on both software and hardware platforms, it can be seen that the instrument indication error is less than 7% and the repeatability is 0.9%,which indicates that the method is effective and the instrument can meet the requirements of the regulation.