Abstract
Monitoring and management of water levels has become an essential task in obtaining hydroelectric power. Activities such as water resources planning, supply basin management and flood forecasting are mediated and defined through its monitoring. Measurements, performed by sensors installed on the river facilities, are used for precisely information about water level estimations. Since weather conditions influence the results obtained by these sensors, it is necessary to have redundant approaches in order to maintain the high accuracy of the measured values. Staff gauge monitored by conventional cameras is a common redundancy method to keep track of the measurements. However, this method has low accuracy and is not reliable once it is monitored by human eyes. This work proposes to automate this process by using image processing methods of the staff gauge to measure and deep neural network to estimate the water level. To that end, three models of neural networks were compared: the residual networks (ResNet50), a MobileNetV2 and a proposed model of convolutional neural network (CNN). The results showed that ResNet50 and MobileNetV2 present inferior results compared to the proposed CNN.
Highlights
IntroductionImage-based water level estimation corresponds to a visual-sensing technique that uses an imaging process to automatically inspect readings of the water-line instead of the human eye [1]
Image-based water level estimation corresponds to a visual-sensing technique that uses an imaging process to automatically inspect readings of the water-line instead of the human eye [1].Monitoring the water level has become an essential task for regulatory control of rivers in order to manage disaster risk assessment, flood warnings, water resources planning, public and industrial supply [2]
Three different deep neural networks where tested in order to identify the model that better fits to the problem
Summary
Image-based water level estimation corresponds to a visual-sensing technique that uses an imaging process to automatically inspect readings of the water-line instead of the human eye [1]. Monitoring the water level has become an essential task for regulatory control of rivers in order to manage disaster risk assessment, flood warnings, water resources planning, public and industrial supply [2]. In hydro-power energy production, it is essential to monitor the rainfall, inflows and water level in order to maximize energy revenue, while taking into account dam safety risks [3]
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