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Rain gauge / Ting Wee Yii

Rain gauge_Ting Wee Yii_E3_2007_NI
Tolok hujan adalah suatu alat yang digunakan oleh ahli meterologi dan hidrologi untuk mengukur jumlah air hujan dalam satu jangka masa yang tertentu. Kebanyakan tolok hujan mengukur air hujan dalam unit millimeter. Tolok hujan jenis jongket timba terdiri daripada satu silinder kuprum. Terdapat satu corong yang menghalakan dan mengumpul air hujan di atas silinder tersebut. Air hujan akan jatuh ke salah satu timba kecil atau tuil yang hampir sama seperti neraca. Selepas air hujan yang dikumpul mencapai 0.5 mm, timba atau tuil tersebut akan terjatuh dan menghasilkan isyarat elektrik. Kajian ini menjurus kepada penghasilan kaedah pencerapan data daripada tolok hujan pada hari hujan. Kajian ini dibahagi kepada tiga bahagian, iaitu pengumpulan data, pengiraan data air hujan untuk setiap minit, dan memplot graph daripada data yang telah dikumpulkan. Untuk pengumpulan data, pengelop data jenis DATAQ (DI-194RS) telah digunakan. Semua data dikumpul setiap saat dan disimpan dalam Microsoft Excel. Pengiraan dan pemplotan graf data yang telah dikumpulkan dijalankan dengan menggunakan Microsof Visual Basic Macros. Sebagai kesimpulan, kaedah ini adalah sesuai untuk pencerapan data tolok hujan. _________________________________________________________________________________________ A rain gauge is a type of instrument used by meteorologists and hydrologists to gather and measure the amount of liquid or solid precipitation over a set period of time. Most rain gauges generally measure the precipitation in millimeters. The tipping bucket rain gauge consists of a large copper cylinder. At the top of the cylinder is a funnel that collects and channels the precipitation. The precipitation falls onto one of two small buckets or levers which are balanced in same manner as a scale. After an amount of precipitation equal to 0.5 mm falls the lever tips and generate an electrical signal. This project is focused on how to develop data from rain gauge when there are raining day. Development of this project was done in three separate parts. These three parts are collect data from rain gauge, calculate the rain rate and rainfall for each minute, and plot out graph for rain rate and rain fall. For collecting data from rain gauge, data logger type DATAQ (DI-194RS) was used. All the data were collect in each second and save in the Microsoft Excel. Then, calculate the rain rate and rainfall part and plot graph part was done using Microsoft Visual Basic macros. In conclusion, the data from rain gauge can be developing well using this system.
Contributor(s):
Ting Wee Yii - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
rain gauge; funne; meteorologists
First presented to the public:
3/1/2007
Original Publication Date:
9/13/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 65
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-09-13 11:15:43.689
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

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Rain gauge / Ting Wee Yii1 2018-09-13 11:15:43.689