Dynamic Bicycle Power Distribution Control for Lamp Brightness
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Solution Overview
Problem
Conventional bicycle power control apparatuses fail to appropriately distribute generated power to electric components, such as lamps, during high-speed travel, leading to insufficient light intensity and potential reduced component lifespan due to fixed power ratios.
Innovation Solution
A bicycle power control apparatus comprising a rectifier, storage battery, detection unit, and controller that dynamically controls the ratio of power distribution to electric components and the storage battery based on detected parameters like bicycle speed, using pulse width modulation to ensure optimal power allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the generated power is mainly distributed to the storage battery when voltage is low, then the storage battery charging is prioritized, but the light intensity becomes insufficient during high-speed traveling
Solution Approach 1:
The patent applies dynamics by making the power distribution ratio variable based on bicycle speed. The control unit dynamically adjusts the proportion of power allocated to the lamp versus the storage battery according to the detected speed, transforming a static distribution system into a dynamic one that adapts to changing operating conditions. This resolves the contradiction by allowing the system to prioritize charging at low speeds while ensuring sufficient light output at high speeds.
Solution Approach 2:
The patent changes the parameter of power distribution ratio based on speed detection. By using the detection unit to monitor bicycle speed and adjusting the power allocation parameters accordingly, the system optimizes both battery charging and lamp illumination. The control unit modifies the power distribution parameters in real-time, ensuring that light intensity requirements are met during high-speed travel while still charging the battery when appropriate.
2Device complexity
If a fixed power distribution ratio is used, then the control system is simple, but the power allocation is not appropriate under varying speed conditions
Solution Approach 1:
The patent transforms the static power distribution system into a dynamic one by introducing speed-based control. The control unit adjusts power allocation in real-time based on detected speed, making the system adaptive to varying operating conditions. This dynamic approach resolves the contradiction between simplicity and adaptability by implementing control logic that is relatively simple (speed-based thresholds) but highly effective in adapting to different travel conditions.
Solution Approach 2:
The patent implements feedback control by using the detection unit to monitor bicycle speed and feeding this information back to the control unit, which then adjusts the power distribution ratio accordingly. This closed-loop feedback mechanism enables the system to automatically adapt to changing speed conditions without complex manual intervention, achieving high adaptability with manageable system complexity.
3Productivity
If power is prioritized to the storage battery, then charging efficiency is improved, but the component lifespan may be reduced due to insufficient power to electric components
Solution Approach 1:
The patent applies dynamics by making power distribution variable based on speed. At high speeds where greater generated power is available, the system dynamically increases power allocation to the lamp, ensuring component reliability. At lower speeds, it prioritizes battery charging. This dynamic adjustment resolves the contradiction by ensuring that component power needs are met when generation is high, while still achieving efficient charging when appropriate.
Solution Approach 2:
The patent changes the power distribution parameter based on speed detection results. By adjusting the allocation ratio parameter in response to speed variations, the system ensures that electric components receive adequate power when generation is high (extending lifespan) while maintaining high charging efficiency when speed and generation are lower. This parameter adjustment strategy resolves the contradiction between charging efficiency and component reliability.
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
This solution allows for adjustable power distribution to electric components and the storage battery, enhancing light intensity during high-speed travel while preventing overcharging and extending component lifespan by optimizing power usage based on generated power levels.
Implementation Method 1
a rectifier (52) that rectifies power generated by an AC generator (16)
Implementation Method 2
the controller (58) is configured to modulate a pulse width based on the ratio, forms a pulse width modulation signal
Data Source
AI summary
A bicycle power control apparatus is basically provided with a rectifier, a storage battery, a detection unit and a controller. The rectifier is configured to rectify power generated by an AC generator that is mounted on a bicycle. The storage battery is configured to store DC power outputted by the rectifier. The storage battery is configured to supply the DC power to an electric component that is mounted to the bicycle. The detection unit is configured to detect an electrical signal from the AC generator. The controller is configured to control a ratio of a distributed amount of the DC power to the electric component with respect to a distributed amount of the DC power to the storage battery according to the detection result of the detection unit.