Automatic water quality sampling device

The invention discloses an automatic water quality sampling device. The automatic water quality sampling device comprises a signal source and a water sample collection device; the water sample collection device comprises a boat body as well as an electronic compass, a soar panel, a distance sensor, a signal receiver, a water sample collection module, a controller, an electromotor and a stern rudder, which are arranged on the boat body, and the electromotor is connected with a paddle; the signal receiver receives a signal of the signal source and transmits the signal to the controller; the electronic compass is used for judging the direction and transmitting the direction data to the controller; the distance sensor is used for measuring the distance to a barrier and transmitting the distance data to the controller; the controller is used for controlling the starting and stopping of the motor and the swinging of the stern rudder so as to realize the orientation motion of the boat body; the controller controls the water sample collection module to collect a sample. By adopting the way, the water sampling time can be shortened, the labor intensity of workers can be alleviated, and boundedness of the multipoint sampling can be solved.