Bicycle Light Unit with Turning Angle Detection
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Solution Overview
Problem
Conventional bicycle and motorbike light units fail to provide adequate illumination when turning, as the straight light beam does not illuminate areas off the axis, increasing the risk of accidents on curved roads.
Innovation Solution
A light unit with a detector and micro-calculator that activates secondary lights on either side of the main light when the bicycle turns, using detected turning angles and lateral forces to extend illumination to the sides, calculated using equations like AngleX·Z=tan-1(Gx²+Gy²)·180/π, ensuring wider coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single main light is used to illuminate the road ahead, then the illumination intensity on the straight path is sufficient, but the illumination area does not cover the lateral areas when turning
Solution Approach 1:
The light unit is segmented into a main light for straight-ahead illumination and two secondary lights positioned on either side for lateral illumination during turns. This segmentation allows each light to serve a specific directional purpose, resolving the contradiction between maintaining focused intensity and expanding coverage area.
Solution Approach 2:
The illumination pattern transitions from a single-dimensional straight-ahead beam to a multi-dimensional lighting pattern by adding lateral illumination components. The secondary lights provide illumination in the lateral dimension, creating a three-dimensional illumination space that covers both straight and curved path requirements.
2Area of stationary object
If secondary lights are added to illuminate lateral areas during turns, then the illumination area is expanded, but the device complexity increases
Solution Approach 1:
The detector and micro-calculator serve multiple functions: they detect turning actions, calculate turning angles, determine which secondary lights to activate, and control the timing of light activation. This multi-functionality reduces the need for separate control components for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The system uses the bicycle's own turning motion to automatically trigger the appropriate secondary lights through the detector and micro-calculator. The system self-regulates which lights activate based on the detected turning direction and angle, eliminating the need for manual control mechanisms and reducing overall system complexity.
3Device complexity
If the light beam remains straight and fixed, then the structure is simple, but the illumination cannot follow the turning path of the bicycle
Solution Approach 1:
The illumination pattern becomes dynamic by activating different secondary lights based on the bicycle's turning state. The system transitions from a static straight beam to a dynamic illumination pattern that adapts to the bicycle's directional changes, improving adaptability while maintaining relatively simple structural additions.
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 solution provides wider illumination when turning, allowing riders to see the road situation ahead, reducing the risk of accidents by illuminating blind areas on curved roads effectively.
Implementation Method 1
The detector detects the turning angle and the lateral force of the bicycle when the bicycle turns
Data Source
AI summary
A light unit for a bicycle includes a main light which has a detector and a micro-calculator located therein. The detector is electrically connected to the micro-calculator. The detector detects the turning angle and the lateral force of the bicycle when the bicycle turns, and sends the turning angle and the lateral force to the micro-calculator. Two secondary lights are located on two sides of the main light. Each of the two secondary lights is electrically connected to the micro-calculator which controls the operation of each of the two secondary lights to provide wider illumination when the bicycle turns.