Abstract:

We designed a control system of automatic water sampling for water quality monitoring buoy. The system includes water pumping, water storage and allocation, waste water collection and a control unit. It has such functionalities as water sample acquisition, filtering and distribution, waste water collection and discharge and pipes flushing. We selected electronic components and materials suitable for marine environment based on performance parameters, control logic and specific structures of each part. System test shows that it is reliable and can satisfy reality requirements. It therefore can be widely applied to other cases of automatic water sampling.

Key words: water quality monitoring, buoy, water sampling