Vehicle Speed-Change Warning Lights Beyond Brake Activation
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Solution Overview
Problem
Existing vehicle safety systems fail to accurately determine and communicate the acceleration or deceleration of a vehicle to following drivers, leading to rear-end collisions, especially in situations where the vehicle is decelerating without brake light activation.
Innovation Solution
An electronic device that uses a sensor connected to a microcontroller to detect changes in vehicle speed and activate independent acceleration or deceleration lights, separate from conventional brake lights, providing real-time visual warnings to following drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brake sensors are provided on the brake pedal to generate deceleration signals, then deceleration can be detected, but it is not really possible to know in what way the vehicle is changing its speed
Solution Approach 1:
The patent replaces mechanical pedal-based sensing with electronic acceleration sensors that directly measure vehicle acceleration and deceleration. This substitution enables accurate detection of actual speed changes rather than inferring them from pedal position, thereby resolving the information loss about true vehicle dynamics
Solution Approach 2:
The patent introduces an intermediary processing system that receives signals from both brake pedals and acceleration sensors, combines this data with vehicle speed information, and generates comprehensive deceleration detection. This intermediary layer reconciles the incomplete information from individual sensors to provide accurate speed change detection
2Loss of information
If acceleration and brake pedals are mechanically connected to warning lights, then driver intent can be indicated, but the actual acceleration or deceleration of the vehicle is not measured or evaluated
Solution Approach 1:
The patent creates a multi-functional system where the same sensor array and processing unit serve multiple purposes: detecting braking, detecting acceleration, determining overall deceleration state, and controlling appropriate warning lights. This universal approach consolidates complexity rather than increasing it, as one system handles all speed change detection functions
Solution Approach 2:
The patent merges the detection functions for braking and acceleration into a unified system that processes signals from both pedals through common electronics and combines them with speed sensor data. This consolidation eliminates redundant components and provides comprehensive vehicle dynamics measurement through an integrated architecture
3Reliability
If conventional brake lights are used, then braking can be indicated, but following drivers are not alerted when the vehicle is decelerating without brake light activation
Solution Approach 1:
The patent segments the deceleration warning function from the traditional brake light system by introducing independent acceleration-sensitive lights. This segmentation allows the system to provide separate visual cues for braking (brake lights) versus deceleration without braking (acceleration lights), ensuring following drivers are informed of all speed reductions regardless of brake pedal usage
Solution Approach 2:
The patent implements feedback by continuously monitoring vehicle speed and acceleration through sensors, comparing this data against threshold values, and automatically activating appropriate warning lights. This closed-loop feedback system ensures real-time communication of deceleration status to following drivers, enhancing safety by providing timely alerts
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
Reduces rear-end accidents by increasing reaction time for following drivers, as they are alerted to changes in the vehicle's speed, enhancing safety and reducing collisions.
Implementation Method 1
a sensor (1), which is activated when a magnet (2) approaches, inserted in a rotating mechanism (3)
Data Source
Figure 1/2
Figure 2/2
AI summary
Electronic device comprising an electronic circuit that receives signals from a sensor and which are processed by a microcontroller, such that if an increase or decrease of time is detected between the signals sent by the sensor, they will be interpreted as an acceleration or deceleration respectively, being activated the acceleration or deceleration lighting devices as appropriate.