Automatic Brake Light Control via Deceleration Thresholds
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Solution Overview
Problem
Rear-end accidents often occur due to drivers' ignorance of the speed and deceleration conditions of the vehicle ahead, leading to inadequate brake light activation and undesirable traffic patterns.
Innovation Solution
A brake light control system that includes a control module connected to a vehicle communications port, capable of receiving vehicle speed signals, calculating deceleration, and generating a brake light activation signal based on predetermined thresholds to automatically activate the vehicle's brake lights, providing comprehensive brake light illumination correlated with actual deceleration conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brake lights are only activated when the driver depresses the brake pedal, then the brake light system remains simple and reliable, but following drivers cannot detect actual deceleration conditions leading to rear-end accidents
Solution Approach 1:
The patent introduces a control module as an intermediary between the vehicle's communication system and brake light activation. This module receives speed signals, calculates deceleration, and triggers brake lights automatically when deceleration exceeds a threshold, serving as a mediator that enables safe automatic activation without requiring direct driver input
Solution Approach 2:
The patent replaces the purely mechanical brake pedal activation system with an electronic control system that uses sensors, signal processing, and automated decision-making. The control module substitutes the mechanical connection between driver action and brake light activation with an electronic system that can detect and respond to deceleration conditions automatically
2Loss of information
If brake lights are activated automatically based on deceleration detection, then following drivers can detect speed and deceleration conditions, but the brake light control system becomes more complex
Solution Approach 1:
The patent implements a feedback mechanism where the control module continuously monitors vehicle speed signals, calculates deceleration in real-time, and adjusts brake light activation accordingly. This closed-loop feedback system ensures that brake lights provide accurate information about current deceleration conditions to following drivers
Solution Approach 2:
The control module serves multiple functions: it receives speed signals from the vehicle's communication system, calculates deceleration rates, compares deceleration against safety thresholds, and controls brake light activation. This multi-functional approach consolidates complexity into a single versatile component rather than requiring separate systems for each function
3Measurement precision
If the control module continuously monitors speed signals and calculates deceleration, then brake light activation is more accurate, but energy consumption increases
Solution Approach 1:
The control module operates by periodically sampling speed signals at defined intervals rather than continuously monitoring at maximum capacity. This periodic operation maintains sufficient measurement precision for safety purposes while reducing energy consumption compared to continuous high-frequency monitoring
Data Source
AI summary
Apparatus and associated methods include automatically activating and/or deactivating a vehicle's standard brake lights in response to signals indicative of the vehicle's speed. The signals indicative of a vehicle's speed are received from a vehicle communications bus. In some embodiments, a deceleration value is calculated based on a series of signals indicative of a vehicle's speed received from the vehicle communications bus. The calculated deceleration value is compared with a first predetermined deceleration threshold. If the calculated deceleration value is greater than the first predetermined deceleration threshold, a brake light activation signal is generated. When the vehicle no longer is decelerating or the computed deceleration value falls below a second predetermined deceleration threshold, a brake light deactivation signal is generated. The automatic activation/deactivation of a vehicle's standard brake light may advantageously provide improved safety to following vehicles and drivers.