| 光全散射法在城市扬尘在线监测系统中的应用 |
| |
| 引用本文： | 路广,李杏华,肖云龙.光全散射法在城市扬尘在线监测系统中的应用[J].红外与激光工程,2016,45(11):1118005-1118005(6). |
| |
| 作者姓名： | 路广 李杏华 肖云龙 |
| |
| 作者单位： | 1.天津大学 精密测试技术及仪器国家重点实验室,天津 300072 |
| |
| 基金项目： | 美丽天津重大工程（14ZCDGSF00028） |
| |
| 摘 要： | 研究了光全散射法在大范围空间颗粒物浓度监测中的应用及实现。借助于结构设计和调制解调技术去除环境中背景光对光电转换的影响，为避免光源光强的波动对系统稳定性的干扰，采取光强反馈措施进行补偿。应用多波长消光法，结合Lamber-Beer定律和Mie散射理论，实现开放空间颗粒物浓度值的测量。将系统的计算结果和标准仪器进行实时对比，二者的Pearson相关系数为0.988 9，数据有较好的一致性，系统量程可达0~400 mg/m3，响应时间为1 min。为大范围空间颗粒物质量浓度的监测提供了一种快速、实时的手段。
|
| 关 键 词： | 光全散射法 颗粒物浓度 Mie散射 在线监测 |
| 收稿时间： | 2016-03-24 |
Application of total light scattering in city dust o-line monitoring system |
| |
| Affiliation: | 1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072,China |
| |
| Abstract: | The application and implementation of total light scattering were studied to monitor particulate matter mass concentration in large areas. By means of structural design and modern technology, it removed the influence of environment background light in the process of photoelectric conversion, in order to avoid the disturbance on the system's stability because of light source intensity's fluctuation, the light intensity feedback was applied to compensate for it. Using the multiple wavelength method, combined with the Lamber-Beer law and Mie scattering theory, it implemented particle concentration detection in wide open spaces. Compared the system's calculated results with the standard instrument, the Pearson correlation coefficient is 0.988 9, it indicates that the data has good consistency, the range can reach 0-400 mg/m3, the response time is 1 min. It provides a rapid and rea-time method to monitor particulate matter mass concentration in large areas. |
| |
| Keywords: | |
|
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
