| 翻斗式雨量计翻斗旋转时间特性分析 |
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| 引用本文： | 廖敏涵,刘九夫,廖爱民,黄一昕,蔡钊,闵星,李薛刚.翻斗式雨量计翻斗旋转时间特性分析[J].水利水运工程学报,2020,0(4):119-126. |
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| 作者姓名： | 廖敏涵 刘九夫 廖爱民 黄一昕 蔡钊 闵星 李薛刚 |
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| 作者单位： | 南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029;南京水利科学研究院滁州综合水文实验基地,安徽滁州239080;河海大学水文水资源学院,江苏南京210098;南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029;南京水利科学研究院滁州综合水文实验基地,安徽滁州239080;河海大学水文水资源学院,江苏南京210098 |
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| 基金项目： | 国家自然科学基金资助项目（91647203, 51609145）；国家重点研发计划资助项目(2017YFC0405700)；中央级公益性科研院所基本科研业务费资助项目（Y517009） |
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| 摘 要： | 在翻斗式雨量计的研究中，由于翻斗旋转速度较快，造成翻斗旋转时间的测量一直以来都是一个难点。利用图像处理中的帧间差分法，结合Matlab软件编程，提出了一种新的翻斗旋转时间测量方法。在此基础上，将该方法应用于4种常用的翻斗式雨量计，在不同的雨强尺度下分别进行试验研究，分析翻斗旋转的时间特性。结果表明:（1）试验中使用的4种单层翻斗式雨量计的翻斗旋转时间在小雨强下不稳定，波动较大；在大雨强下较为稳定，波动较小。（2）JDZ02和CQS·JD02的翻斗旋转时间随雨强的增大而减小，呈较好的线性关系，R2分别为0.99和0.86；JDZ05和CQS·JD05的线性关系不明显，R2均小于0.6。（3）引入数字图像处理中的帧间差分法可以有效获取翻斗旋转的时间特性，并加深对翻斗雨量计的认识。
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| 关 键 词： | 翻斗式雨量计 翻斗旋转 时间特性 率定 雨强 |
| 收稿时间： | 2019-06-10 |
Analysis of tipping time characteristics of tipping bucket rain gauge |
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| Affiliation: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China2.Chuzhou Scientific Hydrology Laboratory, Nanjing Hydraulic Research Institute, Chuzhou 239080, China3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China |
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| Abstract: | During the study of the tipping bucket rain gauge (TBR), objective and sophisticated measurements of the duration of bucket rotation were difficult due to the rapid rotation speed of the bucket. In this paper, a new method of measuring the rotation time of the bucket is presented by using the inter-frame difference algorithm in image processing, combined with MATLAB software programming. The method was applied to four commonly used TBRs, and experimental research was carried out under different rain intensity scales to analyze the time characteristics of bucket rotation. The results show that: (1) The tipping time of the four TBRs used in the experiment is unstable under light rain, and the fluctuations are large; however, it is stable under heavy rain, and the fluctuations are small. (2) The tipping time of the JDZ02 and CQS·JD02 buckets decreases with increasing rain intensity, and shows a good linear relationship, with R2 of 0.99 and 0.86, respectively. The linear relationship between JDZ05 and CQS·JD05 is not obvious, and R2 is less than 0.6. (3) The introduction of the inter-frame difference algorithms during digital image processing can effectively obtain the time characteristics of bucket rotation, and deepen our understanding of the tipping bucket rain gauge. |
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