传感技术学报2018，Vol.31Issue(1)：30-35,6.DOI:10.3969/j.issn.1004-1699.2018.01.006
粒子计数器的一种新型光学传感器设计
Design of New Optical Sensor for Particle Counter
摘要
Abstract
Aiming at the problems of the existing optical particle counter sensor easily being affected particle shape, refractive index and photosensitive location,a new optical particle counter sensor was designed. First of all,a rota-tional symmetry elliptic cavity mirror was used for expanding acceptable scope of space angle,reduced the effects of particle shape and refractive index. Based on the T matrix theory,the relationship between the particle size and scat-tering luminous flux were simulated and computed for non spherical particles of the different refractive index,differ-ent shape and different orientation. The results showed, under the condition of different refractive index, different shape and different spatial orientation,the relationship between the received luminous flux and the particle size re-vealed a good monotonic. It indicated the system reduced the effects of particle shape and refractive index,and had a better effect than other existing systems. Secondly,the combination system of aspheric lens-cylindrical lens was used for improving the uniformity of laser intensity,reducing the effects of different position in the photosensitive ar-ea. The simulation calculation showed that after using the combination of optical devices,the uniformity of light in-tensity was significantly increased,and the negative impact of different location in the photosensitive area is largely eliminated. Then,the overall structure of the sensor is introduced. Finally,the experiment confirmed that the sensor has better performance. This sensor also had the structure simple,portable and inexpensive advantages,and higher application value.关键词
仪器科学与技术/粒子计数器/光学传感器/光学设计/粒度/光散射Key words
instrument science and technology/particle counter/optical sensor/optical design/particle size/optical scattering分类
信息技术与安全科学引用本文复制引用
石鑫,韩月,丁思红,戴兵..粒子计数器的一种新型光学传感器设计[J].传感技术学报,2018,31(1):30-35,6.基金项目
项目来源:国家自然科学基金项目( 51376095) （ 51376095）
