Water sampling with Drones

Purpose and goal

Two different solutions for water sampling were developed, tested and evaluated: water volume sampling for later laboratory analysis using drones, and in-field measurement of water quality parameters using electronic sensors hanging in a cable under a drone. Each of these solutions proved to be workable and useful and has clear advantages, and can also be used to work with various issues within ordinary environmental monitoring as well as for event-controlled monitoring and campaign measurements.

Expected results and effects

The water sampler has clear advantages as a complement to ordinary environmental monitoring. It offers a cost-effective way to obtain water samples. Samples are collected by fewer people, with less equipment, with higher personal safety, and in a shorter time compared to traditional measurement. Water samples can be taken from multiple locations during the same flight route, even after pre-programmed coordinates. In-situ measurement has clear potential as a tool in emergency services, campaign measurements and event-controlled monitoring.

Planned approach and implementation

Several prototypes were developed in collaboration between the various project members. The design criteria consisted of the aeronautical prerequisites for navigating drones, controlling water samplers and carrying loads. Attempts were also made with the amount of water needed to perform water sample analysis and it was found that a significantly smaller amount was required to obtain reliable answers. Traditional probes are too heavy and energy-demanding, so technical development and testing were required to produce working prototypes.