Adaptive Bicycle Lighting Optics for Speed-Responsive Beam Control
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Solution Overview
Problem
Existing bicycle lighting systems fail to independently orient and adjust the intensity of multiple light sources based on speed, ambient light, and turns, leading to inadequate illumination and potential dazzling of oncoming drivers.
Innovation Solution
A portable lighting device with two optics, each containing independent arrangements of light sources, controlled by a unit that activates and adjusts light intensity and orientation based on ambient light, speed, and turn detection, using sensors and a control unit to manage light beams for optimal road illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light sources are used to illuminate the road ahead, then illumination coverage is improved, but device complexity increases due to need for independent orientation control
Solution Approach 1:
The lighting system is divided into two independent optics (A and B), each with its own arrangement of light sources. This segmentation allows each optic to be controlled independently based on specific conditions (speed, ambient light), providing comprehensive illumination coverage without requiring a single complex control system for all light sources.
Solution Approach 2:
The patent implements dynamic control where the activation and intensity of light sources in optics A and B are automatically adjusted based on real-time sensor data (speed sensor and ambient light sensor). This dynamic adaptation allows the system to optimize illumination coverage for different riding conditions without mechanical orientation adjustments.
2Adaptability or versatility
If light sources are oriented according to bicycle turns and speed, then lighting adaptability is improved, but device complexity increases due to motorized orientation mechanisms
Solution Approach 1:
The patent replaces motorized orientation mechanisms with electronic control of light source activation and intensity. Instead of physically rotating light sources to follow bicycle turns, the system uses sensors to detect riding conditions and electronically adjusts which light sources are active and at what intensity, achieving the same adaptive lighting goal without mechanical complexity.
Solution Approach 2:
The system changes operational parameters (which light sources are active and their intensity levels) rather than physical parameters (orientation angles). By adjusting the intensity and activation state of light sources in optics A and B based on speed and ambient light conditions, the system achieves adaptive lighting without mechanical movement.
3Ease of operation
If all LEDs are oriented simultaneously by motors, then orientation control is simplified, but lighting precision deteriorates as individual LED beam orientation cannot be adapted
Solution Approach 1:
Each optic (A and B) is assigned a specific functional role with distinct activation criteria. Optic A is activated based on speed thresholds while optic B responds to ambient light conditions. This local differentiation allows each light source arrangement to be optimized for its specific purpose, achieving precise lighting control without requiring individual orientation adjustment of each LED.
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
Provides adaptive and efficient lighting that adjusts light intensity and direction according to speed and ambient conditions, ensuring clear visibility without dazzling, enhancing safety and usability.
Implementation Method 1
a light sensor detects an intensity of the ambient light so as to activate light sources or groups of light sources
Implementation Method 2
a speed sensor is integrated into the lighting system to activate light sources or groups of light sources of optics A only if the speed of the bicycle in use exceeds a predetermined speed threshold
Data Source
Figure 1
Figure 2~3c
AI summary
The active lighting device (1) for a bicycle comprises a first optic (A) with a first arrangement (6) of light sources for long-distance illumination, controlled by a control unit (2), and a second optic (B) with a second arrangement (7) of light sources for short-distance illumination, also controlled by the control unit. It includes a light sensor (3) to determine the ambient light intensity at the bicycle's location and to enable the control unit to adjust the intensity of the light sources, if they are activated and if the ambient light intensity is below a predetermined threshold. Furthermore, a speed sensor (4a, 4b) is provided to determine the bicycle's speed when used on a path, so that the control unit can activate the light sources of the first arrangement of light sources once a predetermined speed threshold is reached.An orientation or tilt detector (5a, 5b, 5c) is also planned to select and adjust the light intensity of at least some light sources or groups of light sources in the first and second light source arrangements.