Developing a sonic rain gauge

Current official devices used to measure rain parameters has many limitations. The most common rain device used is a Tipping Bucket Rain Gauge which can only measure rainfall over a period. As a result, a sonic rain gauge was proposed. Rain intensities were indirectly determined using the proposed g...

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Main Author: Tan, Xin Yi
Other Authors: Shu Jian Jun
Format: Final Year Project
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10356/71738
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-717382023-03-04T19:08:42Z Developing a sonic rain gauge Tan, Xin Yi Shu Jian Jun School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Current official devices used to measure rain parameters has many limitations. The most common rain device used is a Tipping Bucket Rain Gauge which can only measure rainfall over a period. As a result, a sonic rain gauge was proposed. Rain intensities were indirectly determined using the proposed gauge through individual, distinctive sounds and vibrations produced as raindrops impact the surface of a drumhead. The relationships between raindrop impact force, and sound pressure were determined experimentally under simulated rainfall. Using an audio analyzing software, sound spectrum produced by the sound waves were plotted by Fast Fourier Transform and Standard Autocorrelation analysis. Optimum type of drumhead and sound input setting were also identified. On the basis of these findings, the product underwent its final test in actual rain. Limitations of the proposed gauge were identified as the instrument only showed promising results towards measuring high rainfall rate. Bachelor of Engineering (Mechanical Engineering) 2017-05-19T02:20:41Z 2017-05-19T02:20:41Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/71738 en Nanyang Technological University 74 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Tan, Xin Yi
Developing a sonic rain gauge
description Current official devices used to measure rain parameters has many limitations. The most common rain device used is a Tipping Bucket Rain Gauge which can only measure rainfall over a period. As a result, a sonic rain gauge was proposed. Rain intensities were indirectly determined using the proposed gauge through individual, distinctive sounds and vibrations produced as raindrops impact the surface of a drumhead. The relationships between raindrop impact force, and sound pressure were determined experimentally under simulated rainfall. Using an audio analyzing software, sound spectrum produced by the sound waves were plotted by Fast Fourier Transform and Standard Autocorrelation analysis. Optimum type of drumhead and sound input setting were also identified. On the basis of these findings, the product underwent its final test in actual rain. Limitations of the proposed gauge were identified as the instrument only showed promising results towards measuring high rainfall rate.
author2 Shu Jian Jun
author_facet Shu Jian Jun
Tan, Xin Yi
format Final Year Project
author Tan, Xin Yi
author_sort Tan, Xin Yi
title Developing a sonic rain gauge
title_short Developing a sonic rain gauge
title_full Developing a sonic rain gauge
title_fullStr Developing a sonic rain gauge
title_full_unstemmed Developing a sonic rain gauge
title_sort developing a sonic rain gauge
publishDate 2017
url http://hdl.handle.net/10356/71738
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