Programmable LED Third Brake Light for Deceleration Signaling
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Solution Overview
Problem
Current brake light configurations on vehicles do not effectively communicate the rate of deceleration to following drivers, leading to a high incidence of rear-end collisions, as they only illuminate fully or remain off, failing to indicate the intensity of brake pedal pressure and deceleration rate.
Innovation Solution
A system utilizing programmable LEDs in the third brake light that illuminate and flash in sequence based on the brake pedal's depression, with the number of illuminated LEDs indicating the pressure and potentially flashing to signal maximum braking conditions, allowing for customizable illumination patterns and colors to convey deceleration rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional brake lights are used (fully illuminated or off), then the system is simple and reliable, but the information conveyed to following drivers is insufficient
Solution Approach 1:
The brake light system is segmented into multiple individual LEDs instead of using a single brake light unit. This segmentation allows each LED to represent different levels of brake pedal depression, enabling the system to convey deceleration rate information through selective illumination of different LED segments.
Solution Approach 2:
Different LEDs within the brake light assembly are assigned different functions based on their position. Specific LEDs correspond to specific brake pedal depression levels, creating local quality variations that encode deceleration information. This allows the system to maintain overall simplicity while providing detailed information through localized LED activation.
2Loss of information
If brake lights only illuminate fully or remain off, then the system is easy to operate, but following drivers cannot determine the intensity of brake pedal pressure
Solution Approach 1:
The brake light system automatically determines which LEDs to illuminate based on the brake pedal position sensor input, without requiring additional driver input or complex control mechanisms. The system serves itself by translating brake pedal depression intensity directly into corresponding LED illumination patterns, maintaining ease of operation while providing detailed information.
Solution Approach 2:
The system uses feedback from the brake pedal position sensor to dynamically control which LEDs are illuminated. This feedback mechanism allows the brake light system to automatically adjust its information output based on the driver's braking action, providing real-time deceleration rate information without increasing operational complexity.
3Reliability
If current brake light configurations are used, then manufacturing is simple, but rear-end collisions still occur at high rates
Solution Approach 1:
The brake light assembly is divided into multiple independently controllable LED segments, each corresponding to different deceleration levels. This segmentation improves accident prevention by providing following drivers with clear information about the leading vehicle's deceleration rate, while the modular design maintains manufacturing simplicity through standardized LED components.
Solution Approach 2:
The system changes the illumination state parameter of the brake lights from binary (on/off) to multi-state (different combinations of illuminated LEDs). This parameter change enhances reliability by conveying deceleration rate information that helps prevent rear-end collisions, while the underlying LED technology and control circuitry remain manufacturable using existing processes.
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
Enhances driver awareness of a vehicle's deceleration rate, reducing the likelihood of rear-end collisions by providing clear and progressive visual cues about a vehicle's slowing or stopping status, especially in distracted situations, and offering flexibility for emergency and commercial vehicle applications.
Implementation Method 1
a light emitting device comprising a plurality of programmable lights
Data Source
AI summary
Systems and methods for vehicle braking signals are described herein. In some embodiments, the system and methods improve the brake lights on automobiles.