Cycling Helmet with Motion-Activated Directional LED Array
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Solution Overview
Problem
Cyclists on roads are often overlooked by drivers due to poor visibility, especially in low light conditions, leading to injuries and fatalities, as existing helmets do not effectively communicate their direction of travel or changes in speed.
Innovation Solution
A safety helmet equipped with a plurality of lights connected to a power supply and motion sensors, which process behavioral characteristics to activate side, front, and rear lights in a sequence to indicate direction and speed changes, enhancing visibility through LED or laser LEDs positioned strategically around the helmet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a safety helmet is equipped with multiple lights and motion sensors to indicate direction and speed changes, then visibility and communication of cyclist intent is improved, but device complexity and energy consumption increase
Solution Approach 1:
The light system is divided into multiple independent light sources positioned at different locations on the helmet (front, rear, and side lights). Each light can be independently controlled to indicate specific directional information, allowing the system to communicate complex cyclist intent through simple sequential activation of discrete light segments.
Solution Approach 2:
The light system transitions from static illumination to dynamic sequential activation. The controller activates lights in specific sequences based on detected cyclist movements and directional changes, enabling the system to communicate intent dynamically rather than through continuous static lighting.
2Loss of information
If sequential light activation is used to indicate direction of travel, then communication of cyclist intent is improved, but information processing requirements increase
Solution Approach 1:
The motion sensor continuously monitors cyclist movement and provides real-time feedback to the controller. The controller processes this feedback to determine when and which lights to activate, creating a closed-loop system where cyclist intent is automatically detected and communicated through appropriate light sequences without requiring complex predictive algorithms.
3Illumination intensity
If multiple lights are positioned around the helmet to enhance visibility from all directions, then visibility is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous illumination, the system uses periodic sequential activation of lights. The lights are activated in specific sequences only when motion is detected or when directional communication is needed, significantly reducing overall energy consumption compared to continuous operation of all lights.
Solution Approach 2:
The light system activates only the specific lights needed for current communication needs rather than illuminating all lights simultaneously. For example, only front and side lights activate when the cyclist intends to turn left, directing energy usage to the locally relevant illumination points.
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 helmet significantly improves cyclist visibility by clearly indicating direction and speed changes to other road users, prompting evasive actions and reducing accidents by making cyclists more noticeable, especially in low light conditions.
Implementation Method 1
at least one motion sensor which detects a behavioural characteristic of the cyclist
Implementation Method 2
the lights include light emitting diodes (LEDs) or laser LEDs
Implementation Method 3
the lights include light emitting diodes (LEDs) or laser LEDs
Data Source
AI summary
A safety helmet for enhancing visibility to road users. The safety helmet has a plurality of lights which are operatively connected to a power supply; at least one motion sensor which detects a behavioural characteristic of the cyclist and provides input signals to a controller, the controller operates in accordance with an algorithm whereby the signals are processed to determine appropriate timing of activation of the lights, in dependence upon the behavioural characteristic detected; and wherein switching signals from the controller switch on the lights to indicate actual or intended direction of travel.