雨滴物理特性的粒子成像测量技术研究

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	雨滴物理特性的粒子成像测量技术研究
	郭明航 1,2; 展小云 1,2; 赵军 1,2; 林奇 3
刊名	Transactions of the Chinese Society for Agricultural Machinery(农业机械学报)
	2015-09-25
通讯作者邮箱	zhaojun629@ vip． sina． com
卷号	46 期号:9 页码:144-150
关键词	雨滴(raindrop) 物理特性(Physical property) 粒子成像(Particle imaging) 土壤侵蚀(Soil erosion)
其他题名	Measurement of raindrop physical properties with particle imaging measurement technology
通讯作者	赵军
中文摘要	雨滴形状、直径、降落速度等是表征雨滴特性的重要物理量。为了获取雨滴物理特性参数，基于粒子成像的瞬态测量可视化技术，研制了降雨环境下拍摄雨滴影像的光路系统和成像系统，开发了雨滴影像的识别、提取、量测等软件系统，设计了一种基于面阵电荷耦合元件的自然降雨成像测量系统。钢珠洒落实验发现该技术观测误差小。外场观测实验发现本次降雨主要以中等粒子为主，雨滴直径和降落速度均值分别为 2. 00 mm 和 3. 52 m /s。雨滴降落速度可由雨滴直径的线性回归方程表达，且该方程的预测准确度和精度较高。可见，该测量技术可以准确地获取雨滴物理特性参数，为降雨特征和土壤侵蚀研究开辟了新途径。
英文摘要	The shape， diameter and fall velocity are the key physical characteristics of raindrops． Thus it is imperative that we begin to focus on the direction of physical characteristics of raindrops． In order to obtain physical properties of raindrops， light field and imaging system were designed based on the particle imaging transient visual measurement technology． The software for image identification， extraction and measurement were investigated， and a natural precipitation imaging measurement system based on a charge coupled device sensor was established． The result of the experiment on steel ball showed that the measurement technology had small relative error． By the field experiment， we found that medium-sized particles were the predominant contributor in the single rainfall， with the diameter of 2. 00 mm and average fall velocity of 3. 52 m /s． Mathematic model was developed to calibrate fall velocity and diameter by using linear regression， and the prediction accuracy and precision were reliable． In conclusion，characteristics of raindrops can be measured precisely by the proposed technology， which is a novel method for observing rainfall properties and further researching soil erosion．
分类号	P426(中图分类号)
收录类别	EI
语种	中文
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7739]
专题	水土保持研究所_水保所科研产出（EI）_2015年EI
作者单位	1.西北农林科技大学水土保持研究所，陕西杨凌 712100 2.中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌 712100 3.西安敦瑞测量技术有限公司，西安 710065
推荐引用方式 GB/T 7714	郭明航,展小云,赵军,等. 雨滴物理特性的粒子成像测量技术研究[J]. Transactions of the Chinese Society for Agricultural Machinery(农业机械学报),2015,46(9):144-150.
APA	郭明航,展小云,赵军,&林奇.(2015).雨滴物理特性的粒子成像测量技术研究.Transactions of the Chinese Society for Agricultural Machinery(农业机械学报),46(9),144-150.
MLA	郭明航,et al."雨滴物理特性的粒子成像测量技术研究".Transactions of the Chinese Society for Agricultural Machinery(农业机械学报) 46.9(2015):144-150.