Submersible propeller

Abstract

A control method using angle controllers to sense an included angle between a diver's thigh and a calf and controlling a propellor state based on the included angles. The propellor states include a retreating state when both included angles are 90° or less, a static state when both included angles are 90° to 135°, a variable-speed advancing state when both included angles are greater than 135°, a turning-left state when the left included angle is 90° to 135° and the right included angle is greater than 135°, a turning-right state when the right included angle is 90° to 135° and the left included angle is greater than 135°, and an in-situ spinning state when one included angle is 90° or less and the other included angle is greater than 135°.

1 . A control method for a submersible propeller, comprising:
 (1) sensing by angle controllers an included angle between a thigh and a calf at a respective left side and right side of a diver;   (2) controlling a left propeller and a right propeller of the submersible propellor to be in a retreating state when the thighs and calves on the left and right sides are bent at the same time to form an angle of 90° or less;   (3) controlling the left propeller and the right propeller to be in a static state when the thighs and calves on the left and right sides are bent at the same time to form an angle greater than 90° and less than or equal to 135°;   (4) controlling the left propeller and the right propeller to be in a variable-speed advancing state when the thighs and calves on the left and right sides are bent at the same time to form an angle greater than 135° and less than or equal to 180°;   (5) controlling the left propeller and the right propeller to be in a turning-left state when the left thigh and calf bend to form an angle greater than 90° and less than or equal to 135° and the right thigh and calf bend to form an angle greater than 135° and less than or equal to 180°;   (6) controlling the left propeller and the right propeller to be in a turning-right state when the right thigh and calf bend to form an angle greater than 90° and less than or equal to 135° and the left thigh and calf bend to form an angle greater than 135° and less than or equal to 180°; and   (7) controlling the left propeller and the right propeller to be in an in-situ spinning state when the thigh and calf on one side bend to form an angle of 90° or less and the thigh and calf on the other side bend to form an angle greater than 135° and less than or equal to 180°.   
     
     
         2 . The control method of  claim 1 , wherein the angle controllers include a left angle controller and a right angle controller, the method further comprising:
 before step (1), binding a waist-wearing power supply battery to a waist of the diver, wherein the left propeller and the right propeller are bound to a root of the left thigh and a root of the right thigh respectively, front and rear portions of the left angle controller are bound to the left thigh and the left calf respectively, and front and rear portions of the right angle controller are bound to the right thigh and the right calf respectively; and   turning on a power control switch on the waist-wearing power supply battery when entering into underwater diving,   wherein LEDs in the left angle controller and the right angle controller are located in first grooves in step (2),   wherein the LEDs in the left angle controller and the right angle controller are located in second grooves in step (3), and   wherein the LEDs in the left angle controller and the right angle controller are located in third grooves in step (4),   
     
     
         3 . The control method of  claim 1 , wherein the larger the angle, the faster the advancing speed in step (4).