Dynamic Bicycle LED Lighting Control via PWM and Sensor Feedback
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Solution Overview
Problem
Existing bicycle lighting systems fail to provide dynamic and adaptive illumination that adjusts to the vehicle's speed, direction, and terrain, leading to inadequate lighting in critical areas, especially during turns and varying terrain conditions, which compromises rider safety and visibility.
Innovation Solution
A Pulse Width Modulation (PWM) signal processing system that distributes power to multiple LEDs based on real-time data from sensors, including accelerometers, gyroscopes, and GPS, to create a dynamic adaptive lighting environment that adjusts LED illumination according to the bicycle's speed, lean angle, and terrain, ensuring optimal lighting where it is needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a constant level single bulb lighting system is used, then the device complexity is reduced, but the illumination intensity and adaptability to varying terrain and speed conditions deteriorate
Solution Approach 1:
The patent divides the lighting system into multiple independent LED modules (first LED, second LED, third LED) positioned at different locations and orientations on the bicycle. Each LED can be independently controlled to illuminate different areas (close area, intermediate area, far area), allowing the system to provide adaptive illumination without requiring a single complex bulb assembly.
Solution Approach 2:
The system dynamically adjusts which LEDs are activated and at what intensity based on real-time bicycle speed, lean angle, and terrain conditions detected by sensors. The controller modifies the operational state of each LED module dynamically, enabling the lighting system to adapt to varying riding conditions and maintain optimal illumination intensity.
2Adaptability or versatility
If multiple LEDs are used to provide adaptive illumination, then the illumination intensity and adaptability improve, but the device complexity and power distribution requirements increase
Solution Approach 1:
The system incorporates sensors (accelerometer, gyroscope, speed sensor) that continuously monitor bicycle motion and terrain conditions. This feedback is processed by the controller to dynamically adjust the activation and intensity of individual LED modules, enabling adaptive illumination that responds to real-time riding conditions without requiring complex manual control systems.
Solution Approach 2:
The controller changes operational parameters (activation state, intensity) of individual LED modules based on detected bicycle speed, lean angle, and terrain. By modifying these parameters dynamically, the system achieves high adaptability to different riding scenarios while maintaining a relatively simple overall architecture through standardized LED module design.
3Use of energy by moving object
If PWM signal processing is implemented to distribute power to multiple LEDs, then the power distribution efficiency improves, but the device complexity increases
Solution Approach 1:
The system employs Pulse Width Modulation (PWM) technique to control power distribution to multiple LED modules. By using periodic pulse signals with varying duty cycles, the controller efficiently distributes power to different LEDs based on their required intensity levels, achieving effective power management through a standardized control approach.
4Device complexity
If lighting is fixed in a single area, then the device complexity is minimized, but the illumination coverage and rider safety deteriorate during turns and varying terrain
Solution Approach 1:
The patent positions LED modules asymmetrically on the bicycle with different orientations and illumination directions. The first LED illuminates the close area, the second LED illuminates the intermediate area, and the third LED illuminates the far area, creating an asymmetric lighting pattern that covers multiple spatial zones and provides comprehensive illumination during turns and varying terrain conditions.
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
The system provides intuitive and effective illumination that adapts to changing riding conditions, enhancing rider safety and visibility by ensuring that critical areas are illuminated regardless of speed or terrain, without the need for additional mechanical parts or costly equipment.
Implementation Method 1
The system and apparatus disclosed herein employs pulse width modulation (PWM) signal processing techniques to effectively distribute power at various levels to several light sources, such as light emitting diodes (LEDs) according to various parameters.
Implementation Method 2
The system and apparatus disclosed herein employs pulse width modulation (PWM) signal processing techniques to effectively distribute power at various levels to several light sources, such as light emitting diodes (LEDs) according to various parameters.
Data Source
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AI summary
A system for dynamic distribution of bicycle lighting including a plurality of light sources coupled to and under operation of a controller. The controller controls power distributed to the light sources and provides dynamic illumination of the light sources according to bicycle operating condition data regarding the speed, angle of incline, angle of descent and geographic and terrain conditions in which the bicycle is operated.