Bionic Rescue Robot Fish With Unified Actuation and Buoyancy Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bionic robot fish face challenges with high control complexity, power consumption, and limited maneuverability, particularly in underwater scenarios, and lack effective rescue functions.
Innovation Solution
A bionic rescue robot fish design incorporating a fishtail swing mechanism, pectoral fin swing mechanism, rescue mechanism, and buoyancy adjusting mechanism, utilizing an underactuated pull-wire system and modular, waterproofed components to simulate fish swimming, with a lifesaving airbag and buoyancy control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple joint steering gears are used to actuate the fish body, then the fish body fluctuation can simulate real fish swimming, but the control structure becomes more complicated and power consumption increases
Solution Approach 1:
The patent combines multiple steering gears into a single integrated steering gear that controls multiple joints simultaneously. This merging approach maintains the ability to simulate real fish swimming fluctuations while significantly reducing the number of control components and simplifying the overall control structure.
Solution Approach 2:
The single steering gear is designed to perform multiple functions by controlling multiple joints (first joint, second joint, third joint) through a unified mechanical linkage system. This multi-functional design eliminates the need for separate steering gears for each joint, reducing complexity while preserving swimming simulation accuracy.
2Ease of manufacture
If multiple steering gears are used to control each joint, then the fish body can achieve realistic fluctuation, but the number of driving motors increases leading to higher power consumption
Solution Approach 1:
The patent merges multiple driving motors into a single motor that drives a common steering gear. This steering gear then transmits motion to multiple joints through mechanical linkages, achieving realistic fish body fluctuation with reduced power consumption due to the elimination of multiple independent motor systems.
Solution Approach 2:
The steering gear acts as an intermediary mechanism between the single motor and multiple joints. It translates the rotational motion of one motor into coordinated movements of multiple joints, maintaining swimming posture accuracy while reducing the total number of motors required and thus lowering power consumption.
3Ease of operation
If hydraulic or pneumatic drive is used to control the fish body swing, then accurate control process is achieved, but the drive system becomes particularly complicated
Solution Approach 1:
The patent extracts and eliminates the complex hydraulic or pneumatic components from the drive system. Instead of using fluid power systems with valves and cylinders, the invention employs a simplified mechanical steering gear mechanism that achieves accurate control through pure mechanical linkages and geometry.
Solution Approach 2:
The patent replaces hydraulic/pneumatic drive systems with a purely mechanical steering mechanism. The mechanical steering gear and linkage system provides equivalent control accuracy without the complexity of fluid power systems, eliminating the need for hydraulic valves, pneumatic cylinders, and associated control electronics.
4Speed
If traditional propeller propulsion is used in underwater robots, then the robot can move underwater, but the noise is loud, volume is huge, and propulsion efficiency is low
Solution Approach 1:
The patent copies the swimming mechanism of real fish, replacing the traditional propeller with a biologically-inspired body fluctuation system. The fish body performs undulating movements that propel the robot forward, eliminating the need for large propellers and reducing noise while improving propulsion efficiency through natural hydrodynamic principles.
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
Enhances propulsion efficiency and flexibility, simplifies control, and enables underwater rescue capabilities, with improved maneuverability and real-time obstacle detection.
Implementation Method 1
the buoyancy adjusting mechanism is configured to change a volume of a fish belly part of the bionic rescue robot fish
Implementation Method 2
The pectoral fin method is to change the direction of fluid thrust by using the swing of the pectoral fin, thus achieving floating and diving
Data Source
AI summary
Provided is a bionic rescue robot fish, including a fish body skeleton, a fish head skeleton, a fishtail swing mechanism, a pectoral fin swing mechanism, a rescue mechanism and a buoyancy adjusting mechanism. The fish body skeleton is movably connected to the fish head skeleton. The fishtail swing mechanism, the pectoral fin swing mechanism, the rescue mechanism and the buoyancy adjusting mechanism are arranged on the fish head skeleton. Bionic fish skin is attached to surfaces of the fish body skeleton and the fish head skeleton in a sealing manner. The fishtail swing mechanism, the pectoral fin swing mechanism, the rescue mechanism and the buoyancy adjusting mechanism are each communicated with a control unit. The rescue mechanism can release a lifesaving airbag, and the buoyancy adjusting mechanism can change the volume of fish belly part.