▎ 摘　　要

NOVELTY - The collecting robot has a circular shell whose circle centre is provided with a waterproof brushless motor arranged in axial direction. The output shaft of the waterproof brushless motor is provided with a propeller. The shell is provided with an attitude adjusting component and a power supply component. The attitude adjusting component is used for adjusting the included angle between the shell and the horizontal plane. A power supply component is used for supplying power for each component in the robot. The shell is provided with a main board electrically connected with each component. USE - Underwater weak magnetic signal collecting robot for detecting an object e.g. invaded frog and naval vessel, in a water area. ADVANTAGE - The robot can swim to the protected water area. Multiple robots can form a sensor array and communicate with each other, collect weak magnetic signals cooperatively, detect the target in the fortified water area according to the weak magnetic signal, and determine the space of the target position, moving speed and acceleration. The movement trajectory of the target object is predicted accordingly. The design of the scheme is simple in structure and flexible in movement, and can be arranged in a variety of important ports, dams and other key waters. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for detecting object of underwater weak magnetic signal collecting robot. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the underwater weak magnetic signal collecting robot. 1Shell 2Waterproof brushless motor 3Main board 4Spin screw 5Gravity rudder 6Propeller 7Annular graphene battery