Dual Direction Accident Prevention Braking Coordination
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Solution Overview
Problem
Existing vehicle accident prevention systems fail to effectively coordinate the avoidance of both frontal and rear collisions, often prioritizing frontal collision avoidance over rear collisions, which can lead to inadequate protection in scenarios where a rear collision is imminent.
Innovation Solution
A dual direction accident prevention (DDAP) system that utilizes dual direction rate of approach monitors and assistive braking processors to detect both frontal and rear collision risks in near-real time, applying appropriate braking forces to minimize impact while prioritizing frontal collision avoidance, and preparing the vehicle and occupants for potential impacts through emergency braking and airbag deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system prioritizes frontal collision avoidance by applying strong braking force, then frontal collision prevention is improved, but rear collision risk increases due to sudden deceleration
Solution Approach 1:
The braking force is made dynamic and adaptive rather than fixed. The controller continuously adjusts the braking force magnitude based on real-time monitoring of front and rear vehicle positions, rates of approach, and calculated collision risks. This allows the system to optimize braking intensity to prevent frontal collisions while minimizing the risk of causing rear collisions.
Solution Approach 2:
The system implements closed-loop feedback by continuously monitoring the positions and rates of approach of both front and rear vehicles, calculating collision risks, and adjusting the braking force accordingly. The feedback mechanism allows the system to respond to changing conditions and adjust braking intensity to achieve optimal collision avoidance while preventing harmful side effects.
2Reliability
If the system applies strong braking force to avoid frontal collision, then frontal safety is improved, but passenger comfort deteriorates due to high deceleration
Solution Approach 1:
The braking force is dynamically adjusted based on real-time conditions rather than applying maximum force immediately. The system calculates the optimal braking intensity needed to avoid frontal collision while considering passenger comfort, applying gradually increasing force as needed rather than sudden strong braking.
Solution Approach 2:
The system prepares for potential collisions by gradually applying braking force in advance rather than sudden strong braking at the last moment. This progressive braking approach cushions the deceleration effect on passengers while still achieving collision avoidance, reducing the shock and discomfort experienced by occupants.
3Reliability
If the system monitors both front and rear vehicles with equal priority, then comprehensive safety is improved, but system complexity increases
Solution Approach 1:
The monitoring and control functions are segmented into distinct modules: a front vehicle monitor, a rear vehicle monitor, a controller that receives inputs from both monitors, and a braking system. This segmentation allows each module to focus on specific tasks independently while the controller coordinates them, managing complexity through functional decomposition.
Solution Approach 2:
The controller acts as an intermediary that receives data from both front and rear vehicle monitors, processes the information, and coordinates the braking response. This intermediary component simplifies the overall system by centralizing the decision-making logic and coordinating the actions of different monitoring systems without requiring direct complex interaction between all components.
Data Source
AI summary
A dual direction accident prevention (DDAP) and assistive braking system (ABS) which detects both the risk of a frontal accident and a rear accident and then coordinates braking to prevent both if possible while giving priority to preventing a frontal accident. In the event of an imminent rear collision with an object or vehicle in front of a driver, the system will choose a braking force which minimizes the impact of the rear collision, while determining a safe approach toward the front obstacle. Furthermore, if a vehicle is approaching the driver and an accident is imminent, and there is no further room in front to reduce the effect of the imminent impact, the system prepares the vehicle and driver by bracing for impact by applying emergency brakes, tightening seatbelts, etc.