| 开放光程扬尘颗粒物浓度测量方法及系统 |
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| 引用本文： | 肖云龙,徐可欣,陈文亮,李杏华,李晨曦,路广. 开放光程扬尘颗粒物浓度测量方法及系统[J]. 光学技术, 2016, 0(4): 312-316 |
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| 作者姓名： | 肖云龙 徐可欣 陈文亮 李杏华 李晨曦 路广 |
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| 作者单位： | 天津大学 精密测试技术及仪器国家重点实验室,天津,300072 |
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| 基金项目： | 美丽天津重大工程项目(14ZCDGSF00028);天津科技计划项目(132C2DSF14500;132C2DSF00200) |
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| 摘 要： | 利用单波长激光通过扬尘空间发生散射消光衰减的特性,设计了开放光程的颗粒物浓度检测方法及系统。该方法利用双峰正态分布模型模拟颗粒物粒径分布,实时计算一定空间范围内的扬尘颗粒物浓度,具有响应速度快、测量动态范围宽的优点,适合浓度高、变化快、空间范围大的扬尘颗粒物浓度测量。通过水溶胶模拟实验与烟尘实验验证了该方法的可行性。实验数据表明,系统量程可达0~400mg/m3,分辨率为0.05mg/m3,响应时间小于1s。
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| 关 键 词： | 消光法 Mie散射 开放光程 扬尘浓度 在线测量 |
Fugitive dust concentration measurement method and system based on an opening light-path |
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| XIAO Yunlong;XU Kexin;CHEN Wenliang;LI Xinghua;LI Chenxi;LU Guang. Fugitive dust concentration measurement method and system based on an opening light-path[J]. Optical Technique, 2016, 0(4): 312-316 |
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| Authors: | XIAO Yunlong XU Kexin CHEN Wenliang LI Xinghua LI Chenxi LU Guang |
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| Affiliation: | XIAO Yunlong;XU Kexin;CHEN Wenliang;LI Xinghua;LI Chenxi;LU Guang;State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University; |
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| Abstract: | The fugitive dust concentration measurement method and the system are presented based on light scatter-ing when a single wavelength laser goes through fugitive dust.The system approximates the real particle size distribution by a bimodal normal distribution model and calculates fugitive dust concentration in an opening light-path real-timely. There are a wide dynamic range and a real-time response speed,so it’s appropriate for the measurement of fugitive dust with a high concentration,a fast change and a wide range.The feasibility and reliability is proved by hydrosol experi-ments and smoke dust tests.Experimental results show that the system can cover a concentration measurement range of 0~400mg/m3 with a resolution of 0.05mg/m3 ,and finish a measurement in less than 1s. |
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| Keywords: | light extinction Mie scattering open path fugitive dust concentration online measurement |
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