Submersible Propeller With Leg-Angle Control for Hands-Free Diving
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Solution Overview
Problem
Existing underwater propellers require manual hand control, limiting divers' ability to operate other equipment and causing conflicts with gear, and lack advanced functions like retreating and spinning.
Innovation Solution
A submersible propeller system controlled by angle controllers on the legs, allowing modes like advancing, retreating, turning, and spinning through adjustments of the thigh and calf angles, eliminating the need for hand control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual hand control is used for underwater propellers, then the propeller can be controlled, but the diver cannot free up hands to operate other equipment
Solution Approach 1:
The system uses the diver's own body movements (leg angle adjustments) to control the propeller, eliminating the need for separate hand controls. The diver's natural leg movements serve as the control input, making the system self-serving and hands-free.
Solution Approach 2:
The patent replaces manual hand control mechanisms with an optical sensing system that detects leg angle positions using photoelectric sensors, converting mechanical body movements into electronic control signals for propeller operation.
2Use of energy by moving object
If fixed backpack type propeller is used, then power supply is provided, but it causes conflicts with other equipment such as gas cylinder
Solution Approach 1:
The system divides the power supply and control components into distributed units attached to the diver's legs rather than a centralized backpack configuration, eliminating spatial conflicts with other diving equipment while maintaining power supply capability.
3Adaptability or versatility
If simple propulsion function is provided, then the propeller can move forward, but it cannot implement operations such as retreating and spinning
Solution Approach 1:
The system uses a single control mechanism (leg angle adjustment) to achieve multiple functions including forward propulsion, retreating, spinning, and variable speed control. The photoelectric sensor system detects different leg angle positions to trigger different propeller operations, making one control system universally functional.
Solution Approach 2:
The system dynamically adjusts propeller operation based on real-time detection of leg angle positions. By continuously monitoring the diver's leg posture through photoelectric sensors, the system adapts the propeller's function and speed to match the diver's intended movement, enabling versatile operations from a single control interface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables diverse underwater operations without manual hand control, allowing hands-free use and preventing gear conflicts, with integrated safety features to monitor and adjust diving depth.
Implementation Method 1
the photoelectric sensor is arranged at a position opposite to the LED in the radial direction of the rotating disc; the photoelectric sensor is used to detect whether the LED is rotating to the position opposite to the photoelectric sensor
Data Source
AI summary
A submersible propeller that includes a battery and propellers in which: the propellers include a left propeller and a right propeller; front portions of the left propeller and the right propeller are connected to a waist-wearing power supply battery through a power supply cable for the left propeller and a power supply cable for the right propeller respectively. Rear portions of the left propeller and the right propeller are connected to a left angle controller and a right angle controller through a connection cable for the left angle controller and a connection cable for the right angle controller respectively. The left propeller and the left angle controller are symmetrically distributed left-and-right with respect to the right propeller and the right angle controller. By using angle controllers on the legs, various modes such as advancing, variable-speed advancing, retreating, turning, and in-situ spinning can be implemented.