Centralized Emergency Braking Control for Vehicle Platoons
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Solution Overview
Problem
In High-Density Platooning (HDPL), emergency braking maneuvers in vehicular platoons require quick and coordinated responses due to varying vehicle characteristics, such as weight and braking power, to minimize collateral damages like rear-end collisions, especially given the long reaction times of hydraulic braking systems in trucks.
Innovation Solution
A method and system where a central managing entity determines and communicates individual braking control settings to each vehicle in the platoon based on their characteristics and current state, using V2V or V2I communication, allowing for optimized emergency braking maneuvers and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual braking control settings are determined for each vehicle in the platoon, then braking precision and collision avoidance are improved, but system complexity and communication requirements increase
Solution Approach 1:
The braking control system is segmented by determining individual braking control settings for each vehicle in the platoon based on their specific characteristics (weight, braking power, distance to leading vehicle). This segmentation allows precise control tailored to each vehicle's needs while maintaining overall system coordination through the managing entity.
Solution Approach 2:
The system applies local quality by customizing braking control parameters for each individual vehicle rather than using uniform settings. Each vehicle receives braking control settings adapted to its local characteristics (weight, braking power, position in platoon), enabling optimized braking performance for each vehicle's specific situation.
2Force
If hydraulic braking systems are used in trucks, then braking power is sufficient, but reaction time increases to up to 700 ms
Solution Approach 1:
The system performs preliminary action by having the managing entity determine and communicate individual braking control settings to all vehicles in the platoon before the actual emergency braking event occurs. This advance preparation ensures that when emergency braking is initiated, each vehicle already has its optimized control parameters ready, reducing the effective reaction time despite the inherent hydraulic system delays.
Solution Approach 2:
The system implements feedback by continuously monitoring vehicle characteristics (weight, load, braking power) and using this information to dynamically adjust braking control settings for each vehicle. This feedback loop allows the managing entity to optimize braking performance in real-time, compensating for the slow hydraulic response through intelligent control adjustments.
3Productivity
If distances between trucks in HDPL are reduced to less than 10 m, then fuel consumption decreases and road space is optimized, but the risk of rear-end collisions increases
Solution Approach 1:
The system changes parameters by dynamically adjusting braking control settings for each vehicle based on its specific characteristics and real-time conditions. By modifying braking force, braking timing, and control parameters individually for each truck, the system enables safe operation at reduced inter-vehicle distances that would otherwise be too dangerous for uniform braking control.
Solution Approach 2:
The managing entity performs preliminary action by pre-calculating and communicating optimal braking control settings to each vehicle before emergency situations occur. This advance preparation allows vehicles to execute precisely coordinated braking maneuvers at short distances, preventing collisions that would be inevitable with standard reaction times and uniform braking control.
Data Source
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AI summary
The present disclosure provides a concept for coordinating an emergency braking of a platoon (100) of communicatively coupled vehicles (110). In response to an emergency situation (120), individual braking control settings are centrally determined (230) for one or more vehicles (110) of the platoon (100) by a managing entity (110-3) managing the platoon (100). The individual braking control settings are communicated (240) from the managing entity (110-3) to the one or more vehicles (110) of the platoon (100). The one or more vehicles (110) of the platoon (100) brake (250) in accordance with its respective individual braking control settings received from the managing entity (110-3).