IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water resources and hydroinformatics : Wia system development for discharge measure in stream
Wia system development for discharge measure in stream
ge streams accurately and systematically, we need to obtain enough data on the stage-discharge of each
stream. However, stage-discharge measurements are difficult to carry out due to problems of expense, time, and
manpower. Also, studies on the related techniques are insufficient and have a narrow range. Especially, there is a lack of
data on stage-discharge for small and medium sized streams. Therefore, the lack of real-time measurement data on the
small and medium sized streams results in less accurate numerical value analysis. Hence, in order to manage streams
correctly and systematically, we need to develop a technique and device that can obtain real-time measurement data on
streams economically. With the advancement of IT technology of image acquisition and wireless transmission technology,
WIA (Wireless Image Acquisition) has been incorporated into stream engineering. This system can provide stagedischarge
video data to calculate the real time flow rate and water level at a low cost. With this WIA system, it is possible
to procure data in real time with less than 20% of the cost of existing equipment. WIA System, which is comprised of
raspberry Pi, three Infrared camera, and solar thermal electricity stand-alone system, measures the water level or flux in
real time. Also, it includes Wireless Broadband function(Kim, 2008; Park, 2008). The measurement method is to obtain
images of the transverse structure of the upper, middle and surrounding structure of the stream at regular time intervals,
using an infrared camera where there is no change in cross-section. Then, these video data are transmitted to the central
processing unit. In addition, the WIA system telemeters the water levels in the images from a three-way video stream sent
from the WIA system server and provides the data on cross-sectional level of flow estimation of the stream in real time
through the Internet. Also, the provided data on water stage-discharge in connection with numerical analysis are used to
calculate water stage-discharge in real time for the unmeasured point.Form Required :
File Size : 474,504 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water resources and hydroinformatics
Date Published : 28/08/2015
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