Design and implementation of reservoir profiling water quality monitoring sensor

Water stratification is a typical feature of the ecosystem in the reservoir area. It is of great significance for the study of water environment in the reservoir area to realize the water quality monitoring of different vertical profiles in the reservoir area. According to the requirements of in-situ monitoring of water quality in reservoir section and the application requirements of profile water quality monitoring system, an integrated multi-parameter water quality sensor which can realize in-situ monitoring of water temperature, pH, dissolved oxygen, conductivity and chlorophyll a is designed. The sensor adopts modular and intensive design method, which is small in size and convenient in maintenance. The measurement principle and design method of the sensor are introduced, and the performance of the sensor is tested according to the relevant standards and application requirements. The test results show that the performance of the sensor meets the requirements of relevant standards, and can meet the requirements of water pressure resistance in 250 meters water depth, which can be better applied to the water quality monitoring requirements of large water depth.