Fishing Reel Handle Angular Velocity Feedback Control
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Solution Overview
Problem
Conventional fishing reel technologies fail to provide effective guidance for maintaining a constant retrieval speed during constant-speed winding, as they only indicate timing for each rotation without accounting for speed variations within a single rotation.
Innovation Solution
A handle operation assist device equipped with a sensor to measure handle angular velocity, an error calculator to determine deviations from a reference speed, and a notification unit that reports errors through sound and visual displays, allowing users to adjust their rotation speed for consistent winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only timing for each rotation is shown in rhythm notification, then the device complexity is reduced, but the measurement precision of handle rotation speed within one rotation cannot be provided
Solution Approach 1:
The patent implements a feedback mechanism where the angular velocity sensor continuously monitors handle rotation speed, the error calculator compares real-time speed against target speed, and the notification unit provides immediate feedback to the user. This closed-loop feedback system enables precise measurement and control of rotation speed within one rotation without requiring complex additional hardware.
Solution Approach 2:
The system uses the existing angular velocity sensor output directly for measurement and control purposes. The error calculator processes the sensor data through simple subtraction to determine speed deviations, and the notification unit translates these into user-friendly feedback. This self-service approach leverages available components to achieve precise measurement without adding significant complexity.
2Productivity
If real-time feedback on rotational irregularities is provided, then the productivity of constant-speed winding is improved, but the notification unit complexity increases
Solution Approach 1:
The notification unit implements feedback by continuously monitoring handle rotation speed through the angular velocity sensor and providing real-time information about speed deviations. The error calculator determines instantaneous errors, and the notification unit translates these into audible or visual feedback, enabling users to maintain constant winding speed and improve productivity.
Solution Approach 2:
The patent replaces complex mechanical speed control mechanisms with electronic sensing and notification systems. Instead of using mechanical linkages or additional motors to control rotation speed, the system uses an angular velocity sensor to detect speed, calculates errors electronically, and provides feedback through audio or visual notifications, simplifying the overall system while improving productivity.
3Reliability
If handle angular velocity is measured continuously within one rotation, then the reliability of constant-speed winding is improved, but the sensor requirements become more stringent
Solution Approach 1:
The system uses continuous feedback from the angular velocity sensor to monitor handle rotation speed throughout each rotation. The error calculator processes this continuous data to determine instantaneous speed deviations, and the notification unit provides ongoing feedback. This feedback loop enables reliable constant-speed winding by continuously correcting speed variations without requiring extremely high sensor precision.
Solution Approach 2:
The patent applies partial measurement by focusing sensor data collection and processing on the critical phases of handle rotation where speed control is most important. Rather than requiring uniformly high precision across all rotation parameters, the system concentrates measurement resources on detecting and correcting speed deviations that affect winding reliability, achieving reliable operation with moderate sensor requirements.
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 users to maintain a constant winding speed by providing real-time feedback on rotational irregularities, allowing for precise adjustments to achieve stable and consistent fishing reel operation.
Implementation Method 1
a sensor provided to detect the angular velocity corresponding to the rotation of the fishing reel handle
Data Source
AI summary
A handle operation assist device includes a handle angular velocity measuring unit, an error calculator and a notification unit. The handle angular velocity measuring unit is configured to measure a handle angular velocity based on an output of a sensor configured to detect an angular velocity corresponding to rotation of a fishing reel handle. The error calculator is configured to calculate an error in the handle angular velocity with respect to a reference angular velocity. The notification unit is configured to carry out notification regarding the error.