Catching device for surface rescue based on aircraft platform and surface rescue method

A catching device for surface rescue based on an aircraft platform, comprising a throwing mechanism, a flying mechanism, a recovery mechanism, an automatic control module, and a catching net, wherein both the throwing mechanism and the recovery mechanism are disposed on the flying mechanism, and the automatic control module automatically controls the throwing mechanism and the recovery mechanism;

• after the flying mechanism flies above a drowning person, the throwing mechanism is configured to throw the catching net towards the drowning person;
• after the catching net nets the drowning person, the recovery mechanism is allowed for driving a bottom of the catching net to close, and the flying mechanism is configured to drag the drowning person to a safe location;
• and
• a recognition module is further comprised and disposed on the flying mechanism, wherein when the flying mechanism reaches a rescue position, the recognition module is configured to determine a relative position between the drowning person and the rescue position;
• when the relative position is determined to be within a horizontal distance error Δx and a height difference h1, the automatic control module controls the throwing mechanism to throw the catching net towards the drowning person;
• the throwing mechanism comprises a torque output unit and a linear drive unit, wherein the linear drive unit is connected to the flying mechanism, the torque output unit is disposed at a linear displacement end of the linear drive unit, the linear displacement end drives the torque output unit to move up and down, a torque output end of the torque output unit is connected to a top of the catching net, and the torque output unit drives the catching net to rotate and unfold;
• when controlling the throwing mechanism to throw the catching net, the automatic control module first controls the torque output unit to output a torque, and when the recognition module recognizes that an unfolded range of the catching net is within a predetermined range, controls the linear drive unit to drive the torque output unit and the catching net above the torque output unit to move down until a lower edge of the catching net enters water and the drowning person is netted;
• and
• after the bottom of the catching net is closed, the linear drive unit is allowed for driving the throwing mechanism to further drive the catching net and the drowning person inside the catching net to move up.