Sonar Steering System for Dynamic Target Tracking
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Solution Overview
Problem
Conventional sonar systems face challenges in maintaining accurate orientation and vertical position of sonar transducers relative to the watercraft's movement and changing underwater targets, leading to difficulties in tracking objects like fish.
Innovation Solution
A sonar steering system that automatically adjusts the directional coverage volume of sonar transducers to maintain a target within the sonar display, independent of the watercraft's movement, by rotating, tilting, and adjusting the vertical position of the transducers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sonar transducers are fixedly coupled to the watercraft, then the sonar system is simple in structure, but the sonar aim deviates from the desired direction as the watercraft moves
Solution Approach 1:
The sonar transducer assembly is made dynamically adjustable through a steering system that can rotate and tilt the transducers independently of the watercraft's movement. This allows the sonar aim to be actively maintained on the desired direction despite watercraft motion, resolving the contradiction between fixed simplicity and aiming accuracy.
2Ease of operation
If the sonar transducer orientation is manually adjusted, then the system structure is simple, but it requires operator attention and is difficult to adjust during other tasks
Solution Approach 1:
The sonar steering system operates autonomously to maintain sonar aiming accuracy without requiring continuous manual adjustment. The system self-corrects for watercraft movement and maintains the desired sonar direction, enabling hands-free operation while improving ease of use during fishing activities.
Solution Approach 2:
Manual mechanical adjustment of sonar orientation is replaced with an automated steering system that uses motors or actuators to rotate and tilt the transducer assembly. This substitution eliminates the need for manual intervention while providing precise control over sonar direction.
3Adaptability or versatility
If the sonar transducers are fixed relative to the watercraft orientation, then the system is simple to operate, but the sonar coverage volume cannot be adjusted to track moving targets
Solution Approach 1:
The sonar transducer assembly incorporates dynamic positioning capabilities through rotation and tilt mechanisms that allow the coverage volume to be actively adjusted. This enables the system to track moving targets such as schools of fish by repositioning the sonar beams independently of the watercraft's fixed orientation.
Solution Approach 2:
The sonar steering system is divided into independent rotational and tilting mechanisms that can be controlled separately. This segmentation allows flexible adjustment of the sonar coverage volume in different directions, enabling versatile target tracking while maintaining manageable system complexity through modular design.
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 hands-free operation, allowing operators to focus on other tasks while maintaining accurate sonar targeting, even when the watercraft and targets are moving.
Implementation Method 1
Sonar transducer elements, or simply transducers, may convert electrical energy into sound or vibrations at a particular frequency
Implementation Method 2
The transducer may receive the reflected sound (the 'sonar returns') and convert the sound energy into electrical energy
Data Source
AI summary
Sonar steering systems offering improved functionality and ease of use for an operator (e.g., an angler) are provided. A sonar steering system is configured to automatically adjust the directional coverage volume of the sonar system in a hands-free manner to allow the operator to focus on other tasks. Some such sonar steering systems are configured to adjust the directional coverage volume of the sonar transducers to maintain a target such as an area of interest (AOI) within the sonar display despite movement of the watercraft relative to the target. Accordingly, the coverage volume may be automatically adjusted to maintain the aim of the sonar transducers at a target that is moving through the water, such as a school of fish.