Development of a low-cost lightweight water quality measurement system equipped on Unmanned Aerial Vehicle (UAV) platform for reservoir water quality monitoring

Abstract

This study is expected to develop two water quality sensors The first is a low-cost lightweight water quality measurement system (WQMS) which is used to measure water temperature dissolved oxygen (DO) conductivity pH and the second is to replace Secchi disk measures Secchi depth of the sensor (KdUINO) and WQMS and KdUINO are equipped on the UAV platform to monitor the water quality of the reservoir In this study we tested the stability and accuracy of WQMS in Qigu The relationship between Kdand SD is established based on Secchi depth physical model Use the UAV to carry WQMS and KdUINO to measure the water quality of the reservoirn and use Arc GIS to establish the water quality map compare Kd water quality map with the satellite remote sensing Kd water quality map The results show that the conductivity of WQMS and the stability of the water temperature sensor are poor It is recommended to use other brands But the accuracy used to build the water quality map is reasonable The Kd measured by KdUINO has a good correlation with the SD and Kd of the satellite remote sensing It means that KdUINO can be used as a sensor to replace the Secchi disk to measure Secchi depth

Date of Award	2020
Original language	English
Supervisor	Chih-Hua Chang (Supervisor)