Retractable Handle Signaling Device for Autonomous Vehicle Detection
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Solution Overview
Problem
Existing safety equipment for cyclists, such as handlebar-mounted signaling devices, face issues with visibility at night and integration with autonomous driving systems, which struggle to detect and interpret sudden changes in trajectory, and often require protruding light sources that can be damaged or obstructed, and fail to provide effective communication in urban environments with autonomous vehicles.
Innovation Solution
A safety handle with a stowable design incorporating a light signaling source, a radio frequency communication module, and an electronic circuit powered by energy recovery systems, paired with a smartphone for BLE communication, enabling continuous operation without maintenance, and providing haptic and optical signals to indicate direction changes, adapt to environmental conditions, and enhance detection by autonomous vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source protrudes from the handlebar to indicate direction changes, then visibility and signaling effectiveness are improved, but the light source becomes vulnerable to damage and obstruction
Solution Approach 1:
The light source is nested within the handlebar structure rather than protruding from it. The signaling device is housed inside the handlebar volume, with the light source positioned to emit light through the handlebar material or surface, protecting it from external damage while maintaining visibility for indicating direction changes.
2Loss of information
If the cyclist extends his arm to signal direction changes, then signaling intention is achieved, but balance is reduced by 50% and control is compromised
Solution Approach 1:
The mechanical arm extension signaling method is replaced with an electronic/optical signaling system integrated into the handlebar. The cyclist can signal direction changes through electronic controls (such as buttons or sensors on the handlebar) that activate lights or other indicators, eliminating the need to extend the arm and maintain full balance and control.
3Loss of information
If existing signaling devices are used, then direction indication is provided, but they fail to integrate with autonomous driving systems and provide effective communication in urban environments
Solution Approach 1:
The signaling device is designed with multi-functionality to serve both traditional cyclists and autonomous vehicles. It includes visible indicators (lights) for other road users and communication capabilities (such as radio frequency transmission) to convey turning intentions to autonomous vehicles' detection systems, enabling effective communication across different urban mobility contexts.
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 ensures continuous and maintenance-free operation, enhances cyclist safety by clearly indicating direction changes through integrated optical and sound signals, improves detection by autonomous vehicles, and adapts to various environments, reducing the risk of damage and improving interaction with urban mobility systems.
Implementation Method 1
a light signaling source
Implementation Method 2
a radio frequency communication module
Implementation Method 3
powered by energy recovery systems
Data Source
AI summary
A safety handle designed to be fitted onto a tubular element of an item of mobile equipment, comprises at least one signaling means. The handle further comprises a radio frequency communication module and an electronic circuit for controlling the communication module by a signal of a change in direction.